WO2021101273A2 - 조절 t 세포 배양용 조성물 및 이의 용도 - Google Patents
조절 t 세포 배양용 조성물 및 이의 용도 Download PDFInfo
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- WO2021101273A2 WO2021101273A2 PCT/KR2020/016382 KR2020016382W WO2021101273A2 WO 2021101273 A2 WO2021101273 A2 WO 2021101273A2 KR 2020016382 W KR2020016382 W KR 2020016382W WO 2021101273 A2 WO2021101273 A2 WO 2021101273A2
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Definitions
- the present invention relates to a composition for culturing T cells and a method for culturing control T cells using the same.
- T cells play a central role in cell-mediated immunity.
- T cells can be differentiated from other lymphocytes, including B cells, by receptors present on the surface of T cells, such as T cell receptors (TCRs).
- T cells are memory T cells (TM) including helper T cells (TH cells), cytotoxic T cells (TC cells, or CTL), central memory T cells (TCM cells) and effector memory T cells (TEM cells).
- TM memory T cells
- TH cells helper T cells
- T cells cytotoxic T cells
- TCM cells central memory T cells
- TEM cells effector memory T cells
- Cells natural killer T cells (NKT cells), gamma delta T cells ( ⁇ T cells), and regulatory T cells (Treg cells).
- Treg regulatory T cells
- Treg cells are T cells that act to suppress the immune response of other cells.
- Treg cells suppress T cell-mediated immunity during the immune response and play a role in suppressing self-reactive T cells that have escaped during the negative selection process of the thymus.
- Treg cells can be largely divided into natural regulatory T cells (nTreg) and induced regulatory T cells (iTreg).
- Natural regulatory T cells known as CD4+CD25+FoxP3+ regulatory T cells arise in the thymus.
- Induced regulatory T cells share a number of properties with naturally occurring Treg cells, but the characteristic of conversion from CD4+CD25-FoxP3- T cells to CD4+CD25+FoxP3+ regulatory T cells is known as a representative difference.
- regulatory T cells can secrete IL-10, TGF- ⁇ , and IL-35, which are known as immunosuppressive cytokines (H Nishikawa et al., Int. J. Cancer, 2010, 127: 759- 767). Regulatory T cells that secrete immunosuppressive cytokines secrete IL-10 and induce antigen-specific T cells that cause autoimmune diseases to immune tolerant antigen presenting cells, thereby inducing immunological resistance. Research to prove that is in progress (S. Karumuthil-Melethil et, al., Diabetes, 2015, 64:1341-1357).
- the present inventors studied a method for effectively culturing regulatory T cells, by confirming that a novel fusion protein dimer containing IL-2 protein and CD80 protein in one molecule can effectively proliferate regulatory T cells.
- the present invention has been completed.
- composition or medium for culturing a regulated T cell comprising an IL-2 protein or a variant thereof and a fusion protein dimer including a CD80 protein or a fragment thereof as an active ingredient.
- a fusion protein dimer comprising an IL-2 protein or a variant thereof and a CD80 protein or a fragment thereof.
- composition comprising, as an active ingredient, regulatory T cells cultured in a medium containing an IL-2 protein or a variant thereof and a fusion protein dimer comprising a CD80 protein or a fragment thereof.
- the culture composition of the present invention When the culture composition of the present invention is used, not only T cells can be effectively proliferated, but in particular, regulatory T cells can be effectively proliferated. In particular, it was confirmed that the survival rate of regulatory T cells significantly increased compared to the conventional culture method using IL-2. In addition, it was confirmed that the amount of Foxp3+ expression was increased in the obtained regulatory T cells. Therefore, this proliferation method can be utilized in the field of cell therapy using regulatory T cells.
- Figure 1a shows a schematic diagram of the fusion protein dimer used in the present invention.
- Fig. 1b is a confirmation of the obtained fusion protein dimer (GI-101) by SDS-PAGE.
- Figure 1c shows the content of the fusion protein dimer (GI-101) according to the absorbance.
- 1D is an analysis of the obtained fusion protein dimer (GI-101) by size exclusion chromatography (SEC).
- Figure 2a shows the obtained hCD80-Fc fusion protein dimer confirmed by SDS-PAGE.
- 2B is an analysis of the obtained hCD80-Fc fusion protein dimer by size exclusion chromatography (SEC).
- Figure 3a shows the obtained Fc-IL2v2 fusion protein dimer confirmed by SDS-PAGE.
- 3B is an analysis of the obtained Fc-IL2v2 fusion protein dimer by size exclusion chromatography (SEC).
- Figure 3c shows the obtained Fc-IL2wt fusion protein dimer confirmed by SDS-PAGE.
- 3D is an analysis of the obtained Fc-IL2wt fusion protein dimer by size exclusion chromatography (SEC).
- Figure 4a shows the obtained hCD80-Fc-IL2wt fusion protein dimer confirmed by SDS-PAGE.
- 4B is an analysis of the obtained hCD80-Fc-IL2wt fusion protein dimer by size exclusion chromatography (SEC).
- FIG. 5 shows a schematic diagram of a method of culturing Treg cells using a fusion protein dimer.
- FIG. 6 shows the number of regulatory T cells cultured in a composition containing RPMI1640 medium.
- FIG. 7 shows the survival rate of regulatory T cells cultured in a composition containing RPMI1640 medium.
- FIG. 10 shows the IL-10 secretion ability of regulatory T cells cultured using a composition containing RPMI1640 medium.
- 11 shows the IL-10 secretion ability of regulatory T cells cultured using a composition containing TexMACS medium.
- 12A and 12B show the number of regulatory T cells proliferated when cultured in a composition including RPMI1640 medium in the optimization process.
- 13A and 13B show the survival rate of regulatory T cells when cultured in a composition including RPMI1640 medium in the optimization process.
- 14A and 14B show the number of regulatory T cells when cultured in a composition including TexMACS medium in the optimization process.
- 15A and 15B show the survival rate of regulatory T cells when cultured in a composition including TexMACS medium in the optimization process.
- 16A to 16C show the results of FACS analysis of the characteristics of cells cultured in a composition including RPMI1640 medium in the optimization process.
- 17A to 17C show the number of regulatory T cells expressing Foxp3 when cultured in a composition including RPMI1640 medium in the optimization process.
- 18A to 18C show the results of FACS analysis of the characteristics of cells cultured in a composition including a TexMACS medium in the optimization process.
- 19A to 19C show the number of regulatory T cells expressing Foxp3 when cultured in a composition including TexMACS medium in the optimization process.
- 21 shows the IL-10 secretion ability of regulatory T cells cultured in a composition including TexMACS medium in the optimization process.
- compositions and medium for regulatory T cell proliferation Composition and medium for regulatory T cell proliferation
- composition for regulated T cell proliferation comprising, as an active ingredient, a fusion protein dimer including an IL-2 protein or a variant thereof and a CD80 protein or a fragment thereof.
- a medium for regulatory T cell proliferation comprising the fusion protein dimer as an active ingredient.
- the medium for proliferation of the regulatory T cells may be a medium to which a fusion protein dimer including the IL-2 protein or a variant thereof and a CD80 protein or a fragment thereof is added to a medium for culturing T cells.
- the T cell culture medium may contain any one selected from the group consisting of amino acids, sugars, inorganic salts, and vitamins.
- the T cell culture medium may contain all of amino acids, sugars, inorganic salts, and vitamins.
- the medium may further include Fetal Bovine Serum (FBS), Hydroxyethyl Piperazine Ethane Sulfonic Acid (HEPES), protein, carbohydrate, mercaptoethanol, and growth factors.
- the medium for culturing the regulated T cells may further contain retinoic acid.
- the medium for proliferation of the regulatory T cells may include the basic components of Table 3 or Table 4 below.
- the term "cell culture medium” refers to a medium used for culturing cells, and specifically refers to a medium for culturing regulatory T cells, more specifically CD4 + CD25 + CD127- cells. . Contains components required by cells for cell growth and survival in vitro , or contains components that aid in cell growth and survival. Specifically, the ingredients may be vitamins, essential or non-essential amino acids, and trace elements.
- the medium may be a medium used for culturing cells, preferably eukaryotic cells, more preferably regulatory T cells, even more preferably CD4 + CD25 + CD127- T cells or CD4 + CD25 + Foxp3 + T cells.
- the cell culture medium according to the present invention is composed of an amino acid component, a vitamin component, an inorganic salt component, other components and purified water,
- the amino acid component is glycine, L-alanine, L-valine, L-leucine, L-isoleucine, L-threonine, L-serine, L-cysteine, L-methionine, L-aspartic acid, L-asparagine, L -Glutamic acid, L-glutamine, L-lysine, L-arginine, L-histidine, L-phenylalanine, L-tyrosine, L-tryptophan, L-proline, ⁇ -alanine, ⁇ -aminobutyric acid, ornithine, citrulline, homo It is at least any one amino acid selected from the group consisting of serine, triiodotyrosine, thyroxine, and dioxyphenylalanine, or a combination thereof, and preferably, glycine, L-alanine, L-arginine, L-cysteine, L-glutamine, L -
- the vitamin component is at least one selected from the group consisting of biotin, D-calcium pantothenate, folic acid, niacinamide, pyridoxine hydrochloride, riboflavin, thiamine hydrochloride, vitamin B12, choline chloride, i-inositol and ascorbic acid. Vitamins or combinations thereof, preferably at least one or more vitamins selected from the group consisting of i-inositol, thiamine hydrochloride, niacinamide and pyridoxine hydrochloride, or combinations thereof,
- the inorganic salt component is calcium chloride (CaCl 2) (anhydride), copper sulfate pentahydrate (CuSO 4 -5H 2 O), ferric sulfate hepta-hydrate (FeSO 4 -7H 2 O), magnesium chloride (anhydrous), magnesium sulfate ( MgSO 4 ) (anhydrous), potassium chloride (KCl), sodium chloride (NaCl), disodium hydrogen phosphate (Na 2 HPO 4 ), sodium hydrogen phosphate monohydrate (NaH 2 PO 4 -H 2 O), zinc sulfate heptahydrate (ZnSO 4 -7H 2 O), ferric nitrate nonahydrate (Fe(NO 3 ) 3 9H 2 O) and sodium hydrogen carbonate (NaHCO 3 ).
- CaCl 2 2 calcium chloride
- CuSO 4 -5H 2 O copper sulfate pentahydrate
- FeSO 4 -7H 2 O ferric sulfate hepta-hydrate
- the other ingredients are D-glucose (dextrose), sodium pyruvate, hypoxanthine Na, thymidine, linoleic acid, lipoic acid, adenosine, cytidine, guanosine, uridine, 2'-deoxyadenosine, 2 It is at least any one other component selected from the group consisting of'-deoxycytidine HCl and 2'-deoxyguanosine, or a combination thereof, preferably sodium pyruvate.
- Purified water is used to dissolve the amino acids, vitamins, inorganic salts and other components, and may be obtained through one or more distillation, or purified water through a filter.
- growth factors or cytokines may be further included in the cell culture medium according to the present invention.
- growth factor IGF, bFGF, TGF, HGF, EGF, VEGF, or PDGF may be used alone or in two or more, but is not particularly limited thereto.
- cytokine IL-1, IL-4, IL-6, IFN- ⁇ , IL-10, or IL-17 may be used alone or in two or more, but is not particularly limited thereto.
- T cell refers to one of the lymphocytes responsible for antigen-specific adaptive immunity. T cells are classified into naive T cells that have not yet met the antigen, mature T cells that have met the antigen, and memory T cells. At this time, the mature effect T cells include helper T cells, cytotoxic T cells, and natural killer T cells.
- helper T cell refers to a cell that promotes humoral immunity by regulating the differentiation and activation of other white blood cells. Because it has a CD4 protein on the cell surface, it is also called a CD4+ T cell. Helper T cells can be further classified into Th1, Th2, Th17, and Treg according to their detailed function. Th1 cells secrete interferon-gamma (IFN- ⁇ ) and tumor necrosis factor beta (TNF- ⁇ ) to induce endosomes and lysosomes to fuse inside macrophages to form endolysosomes. do. Meanwhile, Th2 cells secrete several types of interleukin (IL) to allow B cells to differentiate into plasma cells. Th17 cells secrete interleukin-17 (IL-17) to gather neutrophils.
- IFN- ⁇ interferon-gamma
- TNF- ⁇ tumor necrosis factor beta
- regulatory T cell includes natural regulatory T cells (nTreg) or induced regulatory T cells (iTreg).
- Regulatory T cells herein include CD4+CD25+ T cells, CD4+CD25+CD127low/- T cells or CD4+CD25+Foxp3+ T cells.
- the regulatory T cells maintain immunity homeostasis by suppressing the immune response and block autoimmune reactions and the like.
- cytotoxic T cells refers to cells that kill virus-infected cells or tumor cells by secreting cytotoxic substances such as granzyme or perforin. It is also called a CD8 T cell because it has a CD8 protein on the cell surface. In contrast to helper T cells, it mediates cellular immunity to eliminate virus and cancer cells.
- Natural killer T cells refers to one of effective T cells distributed in a small proportion compared to helper T cells and cytotoxic T cells. Natural killer T cells have the same T cell receptor (TCR) on the cell surface as T cells, but also have natural killer cell-specific molecules such as NK1.1. Naturally killer T cells secrete gamma interferon and interleukin-4 to regulate the immune response.
- TCR T cell receptor
- memory T cells refers to T cells that recognize antigens, which survive for a long time after undergoing differentiation and selection process, and are then rapidly activated when the antigen re-invades later to function as effective T cells. It refers to a cell with potential ability.
- naive T cells meet antigens, cells in an activated state, or effective T cells, are influenced by interleukin-7 and interleukin-15 to differentiate into long-lived memory T cells.
- the fusion protein dimer including the IL-2 protein or a variant thereof and a CD80 protein or a fragment thereof may be included in the culture medium from 1 nM to 2,000 nM.
- the dimer may be included in 1 nM to 1,000 nM, or 1 nM to 500 nM.
- the dimer may be included in 2 nM to 300 nM, 5 nM to 100 nM, 10 nM to 80 nM, 20 nM to 70 nM, or 40 nM to 50 nM.
- the fusion protein dimer may be included in 1 nM, 3.2 nM, 10 nM, 50 nM in the medium.
- Fusion protein dimer comprising IL-2 protein or variant thereof and CD80 protein or fragment thereof
- IL-2 or "Interleukin-2"
- mammals such as primates (eg humans) and rodents (eg mice and rats).
- rodents eg mice and rats
- the IL-2 may be obtained from animal cells, but includes those obtained from recombinant cells capable of producing IL-2.
- the IL-2 may be wild-type IL-2 or a variant thereof.
- IL-2 or a variant thereof is collectively referred to as "IL-2 protein” or "IL-2 polypeptide".
- IL-2, IL-2 protein, IL-2 polypeptide, and IL-2 variants specifically bind to, for example, IL-2 receptors. This specific binding can be confirmed through methods known to those skilled in the art.
- the IL-2 may have the amino acid sequence of SEQ ID NO: 35 or SEQ ID NO: 36.
- the IL-2 may be in a mature form. Specifically, the matured IL-2 may not include a signal sequence, and may have an amino acid sequence of SEQ ID NO: 10.
- the IL-2 may be used as a concept including a fragment in which a part of the N-terminus or C-terminus of wild-type IL-2 is deleted (truncated).
- the IL-2 fragment is 1, 2, 3, 4, 5, 6, 7, 8 consecutively from the N-terminus of the protein having the amino acid sequence of SEQ ID NO: 35 or SEQ ID NO: 36. Pcs, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or It may be a form in which 25 amino acids have been deleted.
- the fragment of IL-2 is 1, 2, 3, 4, 5, 6, 7, 8 consecutively from the C-terminus of the protein having the amino acid sequence of SEQ ID NO: 35 or SEQ ID NO: 36 , 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 or 25 It may be a form in which dog amino acids have been deleted.
- the term "IL-2 variant” refers to a form in which a part of an amino acid of a full-length IL-2 or a fragment of IL-2 is substituted. That is, the IL-2 variant may have an amino acid sequence different from that of wild-type IL-2 or a fragment thereof. However, the IL-2 variant may have an activity equal to or similar to wild-type IL-2.
- IL-2 activity may mean specifically binding to the IL-2 receptor, for example, and this specific binding can be measured through a method known to those skilled in the art.
- the IL-2 variant may be one in which a part of the amino acid of wild-type IL-2 is substituted.
- the IL-2 variant by amino acid substitution at least one of the 38th, 42nd, 45th, 61st, and 72nd amino acids in the amino acid sequence of SEQ ID NO: 10 may be substituted.
- the IL-2 variant may be one in which at least one of the 38th, 42nd, 45th, 61st, or 72nd amino acids in the amino acid sequence of SEQ ID NO: 10 is substituted with another amino acid.
- IL-2 when IL-2 is a form in which a part of the N-terminal portion of the amino acid sequence of SEQ ID NO: 35 is deleted, an amino acid at a position corresponding to that of the amino acid sequence of SEQ ID NO: 10 may be substituted with another amino acid.
- the variant of IL-2 is among the 58th, 62nd, 65th, 81st or 92nd amino acids in the amino acid sequence of SEQ ID NO: 35.
- At least one of them may be substituted with another amino acid.
- These correspond to the 38th, 42nd, 45th, 61st and 72nd amino acid residues of the amino acid sequence of SEQ ID NO: 10, respectively.
- 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 amino acids may be substituted. have.
- from 1 to 5 amino acids may be substituted.
- the IL-2 variant may be in a form in which two amino acids are substituted. Specifically, the IL-2 variant may be one in which the 38th and 42nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may have the 38th and 45th amino acids substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may have the 38th and 61st amino acids substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 38th and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be one in which the 42nd and 45th amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 42nd and 61st amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 42nd and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 45th and 61st amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be one in which the 45th and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 61st and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be in a form in which three amino acids are substituted. Specifically, the IL-2 variant may be one in which the 38th, 42nd, and 45th amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 38th, 42nd, and 61st amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 38th, 42nd, and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be one in which the 38th, 45th, and 61st amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 38th, 45th, and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 38th, 61st, and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 42nd, 45th, and 61st amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be one in which the 42nd, 45th, and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 45th, 61st, and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be in a form in which four amino acids are substituted. Specifically, the IL-2 variant may be one in which the 38th, 42nd, 45th and 61st amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 38th, 42nd, 45th and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10. In addition, in one embodiment, the IL-2 variant may be one in which the 38th, 45th, 61st and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be one in which the 38th, 42nd, 61st and 72nd amino acids are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may be one in which amino acids 42, 45, 61, and 72 are substituted in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may have a form in which five amino acids are substituted. Specifically, in the IL-2 variant, all of the 38th, 42nd, 45th, 61st and 72nd amino acids in the amino acid sequence of SEQ ID NO: 10 may be substituted with other amino acids.
- the "other amino acids" introduced by the substitution are alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, and glutamine. , Histidine, isoleucine, leucine, lysine, methionine, phenyl alanine, proline, serine, threonine, tryptophan ( tryptophan), tyrosine, and valine.
- the 38th in the amino acid sequence of SEQ ID NO: 10 cannot be substituted with arginine
- the 42nd cannot be substituted with phenylalanine
- the 45th cannot be substituted with tyrosine.
- the 61st position cannot be substituted with glutamic acid
- the 72nd position cannot be substituted with leucine.
- arginine which is the 38th amino acid in the amino acid sequence of SEQ ID NO: 10 may be substituted with an amino acid other than arginine.
- arginine which is the 38th amino acid in the amino acid sequence of SEQ ID NO: 10 may be substituted with alanine (R38A).
- phenylalanine which is the 42nd amino acid in the amino acid sequence of SEQ ID NO: 10
- amino acids other than phenylalanine Preferably, in the amino acid substitution of the IL-2 variant, phenylalanine, which is the 42nd amino acid in the amino acid sequence of SEQ ID NO: 10, may be substituted with alanine (F42A).
- tyrosine which is the 45th amino acid in the amino acid sequence of SEQ ID NO: 10 may be substituted with an amino acid other than tyrosine.
- tyrosine which is the 45th amino acid in the amino acid sequence of SEQ ID NO: 10 may be substituted with alanine (Y45A).
- glutamic acid which is the 61st amino acid in the amino acid sequence of SEQ ID NO: 10
- glutamic acid which is the 61st amino acid in the amino acid sequence of SEQ ID NO: 10
- glutamic acid which is the 61st amino acid in the amino acid sequence of SEQ ID NO: 10
- glutamic acid which is the 61st amino acid in the amino acid sequence of SEQ ID NO: 10
- glutamic acid which is the 61st amino acid in the amino acid sequence of SEQ ID NO: 10
- E61A arginine
- leucine which is the 72nd amino acid in the amino acid sequence of SEQ ID NO: 10
- an amino acid other than leucine Preferably, in the amino acid substitution of the IL-2 variant, leucine, which is the 72nd amino acid in the amino acid sequence of SEQ ID NO: 10, may be substituted with glycine (L72G).
- the IL-2 variant may have at least one substitution selected from the group consisting of R38A, F42A, Y45A, E61R, and L72G in the amino acid sequence of SEQ ID NO: 10.
- the IL-2 variant may have amino acid substitutions at two, three, four, or five positions at positions selected from the group consisting of R38A, F42A, Y45A, E61R and L72G.
- the IL-2 variant may have a form in which two amino acids are substituted. Specifically, the IL-2 variant may have been substituted with R38A and F42A. In addition, in one embodiment, the IL-2 variant may be substituted with R38A and Y45A. In addition, in one embodiment, the IL-2 variant may be substituted with R38A and E61R. In addition, in one embodiment, the IL-2 variant may be substituted with R38A and L72G. In addition, in one embodiment, the IL-2 variant may be substituted with F42A and Y45A. In addition, in one embodiment, the IL-2 mutant may have been substituted with F42A and E61R. In addition, in one embodiment, the IL-2 mutant may have been substituted with F42A and L72G. In addition, in one embodiment, the IL-2 mutant may have been substituted with E61R and L72G. In addition, in one embodiment, the IL-2 mutant may have been substituted with E61R and L72G.
- the IL-2 variant may be in a form in which three amino acids are substituted. Specifically, the IL-2 variant may have been substituted with R38A, F42A and Y45A. In addition, in one embodiment, the IL-2 variant may have been substituted with R38A, F42A, and E61R. In addition, in one embodiment, the IL-2 variant may have been substituted with R38A, F42A, and L72G. In addition, in one embodiment, the IL-2 variant may have been substituted with R38A, Y45A, or E61R. In addition, in one embodiment, the IL-2 variant may have been substituted with R38A, Y45A, and L72G.
- the IL-2 mutant may have been substituted with F42A, Y45A, and E61R.
- the IL-2 variant may have been substituted with F42A, Y45A, and L72G.
- the IL-2 variant may have been substituted with F42A, E61R, and L72G.
- the IL-2 variant may have been substituted with Y45A, E61R, and L72G.
- the IL-2 variant may be in a form in which four amino acids are substituted. Specifically, the IL-2 variant may have been substituted with R38A, F42A, Y45A and E61R. In addition, in one embodiment, the IL-2 variant may be substituted with R38A, F42A, Y45A, and L72G. In addition, in one embodiment, the IL-2 variant may have been substituted with R38A, F42A, E61R, and L72G. In addition, in one embodiment, the IL-2 variant may be substituted with R38A, Y45A, E61R, and L72G. In addition, in one embodiment, the IL-2 mutant may have been substituted with F42A, Y45A, E61R, and L72G.
- the IL-2 variant may have been substituted with R38A, F42A, Y45A, E61R and L72G.
- one specific example of the IL-2 variant may be a substitution of any one combination selected from the following (a) to (d) combinations in the amino acid sequence of SEQ ID NO: 10:
- IL-2 when IL-2 has the amino acid sequence of SEQ ID NO: 35, it may have an amino acid substitution at a position complementary to SEQ ID NO: 10. In addition, even when IL-2 is a fragment of the amino acid sequence of SEQ ID NO: 35, an amino acid at a position complementary to SEQ ID NO: 10 may be substituted.
- the variant of IL-2 may have an amino acid sequence of SEQ ID NO: 6, 22, 23 or 24.
- the IL-2 variant may be characterized in that it has low toxicity in vivo.
- the low toxicity in vivo may be a side effect caused by binding of IL-2 to the alpha chain (IL-2R ⁇ ) of the IL-2 receptor.
- IL-2R ⁇ alpha chain
- Various IL-2 variants have been developed in order to improve the side effects caused by the IL-2 and IL-2R ⁇ binding, and such IL-2 variants can be used those disclosed in U.S. Patent No. 5,229,109 and Korean Patent No. 10-1667096.
- the mutant of IL-2 described in the present application has low binding power to the alpha chain (IL-2R ⁇ ) of the IL-2 receptor, and thus has a lower toxicity in vivo than that of wild-type IL-2.
- CD80 is also called “B7-1", and is a membrane protein present in dendritic cells, activated B cells, and monocytes. CD80 provides co-stimulatory signals essential for T cell activation and survival. CD80 is known as a ligand for two different proteins, CD28 and CTLA-4, present on the surface of T cells. CD80 is composed of 288 amino acids, and may specifically have the amino acid sequence of SEQ ID NO: 11.
- CD80 protein refers to a full-length CD80 or CD80 fragment.
- CD80 fragment means a truncated form of CD80.
- the CD80 fragment may be the extracellular domain of CD80.
- amino acids 1 to 34 from the N-terminus, which is a signal sequence of CD80 may be excluded.
- one specific example of the CD80 fragment may be a protein composed of amino acids 35 to 288 of SEQ ID NO: 11.
- a specific example of the CD80 fragment may be a protein composed of amino acids 35 to 242 of SEQ ID NO: 11.
- a specific example of the CD80 fragment may be a protein consisting of amino acids 35 to 232 of SEQ ID NO: 11.
- a specific example of the CD80 fragment may be a protein composed of amino acids 35 to 139 of SEQ ID NO: 11.
- a specific example of the CD80 fragment may be a protein consisting of amino acids 142 to 242 of SEQ ID NO: 11.
- the CD80 fragment may have an amino acid sequence of SEQ ID NO: 2.
- the IL-2 protein and the CD80 protein may be bound by a linker or a carrier.
- the IL-2 or a variant thereof and the CD80(B7-1) or fragment thereof may be bound by a linker or a carrier.
- the linker and the carrier may be used interchangeably.
- the linker connects the two proteins.
- One embodiment of the linker may include 1 to 50 amino acids, albumin or fragments thereof, or the Fc domain of an immunoglobulin.
- the Fc domain of the immunoglobulin includes the heavy chain constant region 2 (CH2) and the heavy chain constant region 3 (CH3) of the immunoglobulin, and includes the variable region of the heavy and light chain and the light chain constant region 1 (CH1) of the immunoglobulin. It means a protein that doesn't.
- the immunoglobulin may be IgG, IgA, IgE, IgD or IgM, preferably IgG4.
- the Fc domain of wild-type immunoglobulin G4 may have an amino acid sequence of SEQ ID NO: 4.
- the Fc domain of the immunoglobulin may be a wild-type Fc domain as well as an Fc domain variant.
- the term "Fc domain variant" used herein is different from the glycosylation pattern of the wild-type Fc domain, increased sugar chains compared to the wild-type Fc domain, decreased sugar chains compared to the wild-type Fc domain, or a sugar chain has been removed. (deglycosylated) form.
- an aglycosylated Fc domain is also included.
- the Fc domain or variant may have a sialic acid, fucosylation, or glycosylation whose content is controlled through culture conditions or genetic manipulation of the host.
- the Fc domain variant may be an immunoglobulin in a form in which an Fc region of IgG, IgA, IgE, IgD or IgM is mixed.
- the Fc domain variant may have a form in which some amino acids of the Fc domain are substituted with other amino acids.
- One specific example of the Fc domain variant may have an amino acid sequence of SEQ ID NO: 12.
- the fusion protein may have a structure in which CD80 and IL-2 proteins are linked or IL-2 and CD80 are linked to the N-terminus and C-terminus of the Fc domain as a linker (or carrier) (FIG. 1A).
- the link between the N-terminus or C-terminus of the Fc domain and CD-80 or IL-2 may be optionally made by a linker peptide.
- the fusion protein may be composed of the following structural formula (I) or (II):
- the N' is the N-terminus of the fusion protein
- X is a CD80 protein
- Y is an IL-2 protein
- linker (1) and linker (2) are peptide linkers
- n and m are independently O or 1.
- the fusion protein may be composed of structural formula (I).
- the IL-2 protein is as described above.
- the CD80 protein is as described above.
- the IL-2 protein may be an IL-2 variant in which one to five amino acids are substituted compared to wild-type IL-2.
- the CD80 protein may be a fragment in which up to about 34 amino acid residues are successively deleted (truncated) from the N-terminus or C-terminus of wild-type CD80.
- the CD80 protein may be an extracellular immunoglobulin-like domain having activity to bind to T-cell surface receptors CTLA-4 and CD28.
- the fusion protein may have an amino acid sequence of SEQ ID NO: 9, 26, 28 or 30.
- the fusion protein is 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93% with respect to the amino acid sequence of SEQ ID NO: 9, 26, 28 or 30 , 94%, 95%, 96%, 97%, 98%, 99% or 100% sequence identity.
- the identity may be determined through, for example, percent homology, homology comparison software such as BlastN software of the National Center of Biotechnology Information (NCBI).
- a peptide linker (1) may be included between the CD80 protein and the Fc domain.
- the peptide linker (1) may consist of 5 to 80 contiguous amino acids, 20 to 60 contiguous amino acids, or 25 to 50 contiguous amino acids, or 30 to 40 amino acids. In one embodiment, the peptide linker (1) may consist of 30 amino acids.
- the peptide linker 1 may include at least one cysteine. Specifically, it may contain one, two or three cysteines.
- the peptide linker (1) may be derived from a hinge of an immunoglobulin. In one embodiment, the peptide linker (1) may be a peptide linker consisting of the amino acid sequence of SEQ ID NO: 3.
- the peptide linker (2) may consist of 1 to 50 contiguous amino acids, or 3 to 30 contiguous amino acids, or 5 to 15 amino acids.
- the peptide linker (2) may be (G4S)n (here, n is an integer of 1 to 10). In this case, n in (G4S)n may be 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.
- the peptide linker (2) may be a peptide linker consisting of the amino acid sequence of SEQ ID NO: 5.
- Another aspect of the present invention provides a dimer in which two fusion proteins including the IL-2 protein and the CD80 protein are bound.
- the fusion protein comprising IL-2 or a variant thereof and CD80 or a fragment thereof is as described above.
- the bond between the fusion proteins constituting the dimer may be made by a disulfide bond by a cysteine present in the linker, but is not limited thereto.
- the fusion proteins constituting the dimer may be the same, but may be different fusion proteins.
- the dimer may be a homodimer.
- An embodiment of the fusion protein constituting the dimer may be a protein having the amino acid sequence of SEQ ID NO: 9.
- a regulatory T cell comprising culturing CD4 + CD25 + CD127- T cells in a medium containing IL-2 protein or a variant thereof and a fusion protein dimer comprising a CD80 protein or fragment thereof. It provides a way to cultivate.
- the CD4 + CD25 + CD127- T cells may be obtained from blood cells.
- CD4 + CD25 + CD127- T cells may be isolated from PBMC (peripheral blood mononuclear cells).
- the CD4+CD25+CD127- T cells may be obtained by specifically proliferating CD4+CD25+CD127- T cells in blood cells.
- the CD4+CD25+CD127- T cells can be obtained from CD4+ cells after CD4-T cells are removed from PBMCs.
- CD4+ T cells may be isolated using anti-CD4 antibodies, and in one embodiment, they were isolated using beads to which anti-CD4 antibodies were bound.
- CD25+ T cells can be isolated using an anti-CD25+ antibody.
- regulatory T cells can be isolated by isolating T cells that are CD4+, CD25+ and CD127-.
- the medium may be a conventionally used medium. Preferably, it may be a medium optimized for CD4 + CD25 + CD127- T cells. In one embodiment, as disclosed in Tables 3 and 4, it may be a medium in which FBS, HEPES, L-Glutamine, and 2-Mercaptoethanol are added to RPMI1640 medium or TexMACS medium. In addition, the medium may further contain retinoic acid. In addition, the medium may further contain penicillin and/or streptomycin.
- control CD4+ T cells may be cultured in the medium for 1 to 30 days and 2 to 20 days. In addition, it can be cultured for 3 to 10 days, and can be cultured for 4 to 6 days.
- the CD4 + CD25 + CD127- T cells culturing CD4 + T cells may be obtained through the step of culturing CD25+ T cells.
- the CD4+ T cells and CD25+ T cells may be obtained from blood cells, respectively.
- each of the CD4+ T cells and CD25+ T cells may be isolated from PBMC (peripheral blood mononuclear cells) or may be obtained by specifically proliferating CD4+ T cells or CD25+ T cells from blood cells.
- PBMC peripheral blood mononuclear cells
- CD4+ T cells or CD25+ T cells can be obtained after removing CD4- T cells or CD25- T cells from PBMCs.
- CD4+ T cells may be isolated using anti-CD4 antibodies, and in one embodiment, they were isolated using beads to which anti-CD4 antibodies were bound.
- CD25+ T cells can be isolated using an anti-CD25+ antibody.
- regulatory T cells can be isolated by isolating T cells, which are CD4+, CD25+ and CD127-, from CD4+ T cells or CD25+ T cells.
- composition for treating a regulated T cell mediated disease comprising the regulatory T cell obtained by the above-described method as an active ingredient.
- the regulatory T cells obtained by the above culture method may have an increased expression level of Foxp3+.
- Foxp3 is a protein also called scurfin.
- the protein is a protein involved in the regulatory mechanism pathway of regulatory T cells, and is known as a marker of regulatory T cells.
- the regulatory T cells obtained above may be CD4+CD25+CD127-Foxp3+ T cells.
- regulatory T cell mediated disease refers to a disease induced by abnormality or deficiency of regulatory T cells, and may be specifically characterized as an inflammatory disease or an autoimmune disease.
- the inflammatory disease is lupus, Sjogren's syndrome, rheumatoid arthritis, fibromyositis, scleroderma, ankylosing spondylitis, Behcet's disease, Aphtha stomatitis, Gillian Barre syndrome, alopecia areata, dermatitis, Crohn's disease, colitis, nodular It may be characterized in that at least one selected from the group consisting of polyarteritis, recurrent polychondritis, and autoimmune thrombocytopenia.
- the autoimmune disease is rheumatoid arthritis, systemic scleroderma, insulin-dependent childhood diabetes by pancreatic cell antibodies, alopecia areata, psoriasis, pemphigus, asthma, aphtha stomatitis, chronic thyroiditis, some acquired aplastic aplasticity.
- Anemia primary cirrhosis, ulcerative colitis, Becce's disease, Crohn's disease, silicosis, asbestosis, IgA kidney disease, glomerulonephritis after streptococcal infection, Sjogren's syndrome, Gillian-Barre syndrome, dermatitis, multiple myositis, multiple sclerosis, Autoimmune hemolytic anemia, autoimmune encephalomyelitis, myasthenia gravis, Graves' hyperthyroidism, polyarteritis nodosa, ankylosing spondylitis, fibromyalitis, temporal arteritis, Wilson's disease, Fanconi syndrome, multiple myeloma, and systemic lupus erythematosus. It can be characterized by the above.
- composition of the present invention may contain a pharmaceutically acceptable carrier and/or additive.
- a pharmaceutically acceptable carrier and/or additive for example, sterile water, physiological saline, conventional buffers (phosphoric acid, citric acid, other organic acids, etc.), stabilizers, salts, antioxidants, surfactants, suspending agents, isotonic agents, or preservatives.
- organic substances such as biopolymers, inorganic substances such as hydroxyapatite, specifically collagen matrix, polylactic acid polymer or copolymer, polyethylene glycol polymer or copolymer and chemical derivatives thereof, and mixtures thereof can be used. However, it is not limited thereto.
- dextran 40 for example, dextran 40, methylcellulose, gelatin, sodium sulfite, sodium metasulfate, and the like may be used.
- the antioxidant include erythorbic acid, dibutylhydroxytoluene, butylhydroxyanisole, ⁇ -tocopherol, tocopherol acetate, L-ascorbic acid and salts thereof, L-ascorbic acid palmitate, L-ascorb Chelating agents such as acid stearate, sodium hydrogen sulfite, sodium sulfite, triamyl gallic acid, propyl gallic acid or sodium ethylenediamine tetraacetate (EDTA), sodium pyrophosphate, sodium metaphosphate, and the like can be used.
- EDTA ethylenediamine tetraacetate
- the suspending agent may be, for example, methylcellulose, polysorbate 80, hydroxyethylcellulose, gum arabic, tragantmal, sodium carboxymethyl cellulose, polyoxyethylene sorbitan monolaurate, and the like.
- the tonicity agent for example, D-mannitol, sorbitol, and the like may be used.
- the preservative for example, methyl paraoxybenzoate, ethyl paraoxybenzoate, sorbic acid, phenol, cresol, chlorocresol, and the like can be used.
- a method for treating a regulatory T cell mediated disease comprising administering the regulatory T cells to an individual having a regulatory T cell mediated disease.
- regulatory T cells and regulatory T cell mediated diseases are as described above.
- a fusion protein comprising a human CD80 fragment, an Fc domain and an IL-2 variant, a signal peptide (SEQ ID NO: 1), a CD80 fragment (SEQ ID NO: 2), an Ig hinge (SEQ ID NO: 3) to which a linker is bound, Fc A fusion protein comprising a domain (SEQ ID NO: 4), a linker (SEQ ID NO: 5) and two amino acid-substituted IL-2 variants (2M) (R38A, F42A) (SEQ ID NO: 6) in this order from the N-terminus
- a polynucleotide containing the encoding nucleotide sequence (SEQ ID NO: 8) was synthesized through the Invitrogen GeneArt Gene Synthesis service of ThermoFisher Scientific, and loaded into the pcDNA3_4 vector.
- the vector was introduced into CHO cells (Expi-CHO TM ) to express the fusion protein of SEQ ID NO: 9. After the vector was introduced, the culture medium was collected and cultured for 7 days in an environment at 37° C., 125 RPM, and 8% CO 2 to purify the fusion protein.
- the purified fusion protein dimer was named "GI-101".
- the fusion protein was bound under the conditions of 25 mM Tris, 25 mM NaCl, and pH 7.4. Then, it was eluted with 100 mM NaCl and 100 mM acetic acid at pH 3. After putting 20% of 1 M Tris-HCl of pH 9 into the collection tube, the fusion protein was collected. The collected fusion protein was changed by dialysis with PBS buffer for 16 hours.
- a high concentration fusion protein was obtained by measuring absorbance at a wavelength of 280 nm over time using size exclusion chromatography using a TSKgel G3000SWXL column (TOSOH Bioscience).
- the separated and purified fusion protein was subjected to SDS-PAGE under reducing (R) or non-reducing (NR) conditions, and stained with coomassie blue to confirm its purity (Fig. 1b).
- Fig. 1c When detected using NanoDrop, it was confirmed that the fusion protein was contained at a concentration of 2.78 mg/ml.
- the results analyzed using size exclusion chromatography are as shown in FIG. 1D.
- a signal peptide SEQ ID NO: 1
- Ig hinge SEQ ID NO: 38
- Fc domain SEQ ID NO: 4
- linker SEQ ID NO: 5
- ThermoFisher a polynucleotide containing the nucleotide sequence (SEQ ID NO: 45) encoding the fusion protein containing the amino acid-substituted IL-2 variant (2M) (R38A, F42A) (SEQ ID NO: 6) from the N-terminus in this order
- the polynucleotide was synthesized through Scientific's Invitrogen GeneArt Gene Synthesis service and loaded into the pcDNA3_4 vector.
- the vector was introduced into CHO cells (Expi-CHOTM) to express the fusion protein of SEQ ID NO: 44. After the vector was introduced, the culture medium was collected and cultured for 7 days in an environment at 37° C., 125 RPM, and 8% CO 2 to purify the fusion protein dimer.
- the purified fusion protein dimer was named "Fc-IL2v2".
- the purification and collection of the fusion protein were performed in the same manner as in Preparation Example 1.
- the separated and purified fusion protein was subjected to SDS-PAGE under reducing (R) or non-reducing (NR) conditions, and stained with Comasi Blue to confirm its purity (FIG. 3A ). As a result, it was confirmed that the fusion protein forms a dimer.
- the results analyzed using size exclusion chromatography are as shown in FIG. 3B.
- a fusion protein comprising an Fc domain and wild-type IL-2, signal peptide (SEQ ID NO: 1), Ig hinge (SEQ ID NO: 38), Fc domain (SEQ ID NO: 4), linker (SEQ ID NO: 5) and wild-type IL PcDNA3_4 by synthesizing a polynucleotide containing a nucleotide sequence (SEQ ID NO: 43) encoding a fusion protein containing -2 (SEQ ID NO: 43) in this order from the N-terminus through the Invitrogen GeneArt Gene Synthesis service of ThermoFisher Scientific Loaded into the vector.
- the vector was introduced into CHO cells (Expi-CHOTM) to express the fusion protein of SEQ ID NO: 42. After the vector was introduced, the culture medium was collected and cultured for 7 days in an environment at 37° C., 125 RPM, and 8% CO 2 to purify the fusion protein dimer.
- the purified fusion protein dimer was named "Fc-IL2wt”.
- the purification and collection of the fusion protein were performed in the same manner as in Preparation Example 1.
- the separated and purified fusion protein was subjected to SDS-PAGE under reducing (R) or non-reducing (NR) conditions, and stained with Comasi Blue to confirm its purity (FIG. 3C). As a result, it was confirmed that the fusion protein forms a dimer.
- the results analyzed using size exclusion chromatography are as shown in FIG. 3D.
- a signal peptide SEQ ID NO: 1
- a CD80 fragment SEQ ID NO: 2
- an Ig hinge to which a linker is bound SEQ ID NO: 3
- Poly comprising an Fc domain (SEQ ID NO: 4), a linker (SEQ ID NO: 5) and IL-2 wild type (SEQ ID NO: 10) from the N-terminus to the nucleotide sequence (SEQ ID NO: 41) encoding a fusion protein containing in this order
- Nucleotides were synthesized by ThermoFisher Scientific's Invitrogen GeneArt Gene Synthesis service and loaded into pcDNA3_4 vector.
- the vector was introduced into CHO cells (Expi-CHO TM ) to express the fusion protein of SEQ ID NO: 46. After the vector was introduced, the culture medium was collected and cultured for 7 days in an environment at 37° C., 125 RPM, and 8% CO 2 to purify the fusion protein dimer.
- the purified fusion protein dimer was named "hCD80-Fc-IL2wt".
- the fusion protein was bound under the conditions of 25 mM Tris, 25 mM NaCl, and pH 7.4. Then, it was eluted with 100 mM NaCl and 100 mM acetic acid at pH 3. After putting 20% of 1M Tris-HCl of pH 9 into the collection tube, the fusion protein was collected. The collected fusion protein was changed by dialysis with PBS buffer for 16 hours.
- a high concentration fusion protein was obtained by measuring absorbance at a wavelength of 280 nm over time using size exclusion chromatography using a TSKgel G3000SWXL column (TOSOH Bioscience).
- the separated and purified fusion protein was subjected to SDS-PAGE under reducing (R) or non-reducing (NR) conditions, and stained with coomassie blue to confirm its purity (FIG. 4A).
- R reducing
- NR non-reducing
- FIG. 4B results analyzed using size exclusion chromatography are as shown in FIG. 4B.
- a signal peptide SEQ ID NO: 1
- a CD80 fragment SEQ ID NO: 2
- a linker-bound Ig hinge SEQ ID NO: 3
- an Fc domain SEQ ID NO: 4
- the vector was introduced into CHO cells (Expi-CHO TM ) to express the fusion protein of SEQ ID NO: 40. After the vector was introduced, the culture medium was collected and cultured for 7 days in an environment at 37° C., 125 RPM, and 8% CO 2 to purify the fusion protein dimer.
- the purified fusion protein dimer was named "hCD80-Fc".
- the fusion protein was bound under the conditions of 25 mM Tris, 25 mM NaCl, and pH 7.4. Then, it was eluted with 100 mM NaCl and 100 mM acetic acid at pH 3. After putting 20% of 1 M Tris-HCl of pH 9 into the collection tube, the fusion protein was collected. The collected fusion protein was changed by dialysis with PBS buffer for 16 hours.
- a high concentration fusion protein was obtained by measuring absorbance at a wavelength of 280 nm over time using size exclusion chromatography using a TSKgel G3000SWXL column (TOSOH Bioscience).
- the separated and purified fusion protein was subjected to SDS-PAGE under reducing (R) or non-reducing (NR) conditions, and stained with coomassie blue to confirm its purity (FIG. 2A).
- R reducing
- NR non-reducing
- FIG. 2B the analysis results using size exclusion chromatography are as shown in FIG. 2B.
- Preparation Example 1 Composition for cultivation for culturing control T cells
- a medium for culturing CD4+ cells was prepared in the following composition. At this time, after preparing the medium of the basic component, the additive components GI-101, GI-101WT, hCD80-Fc, Fc-IL-2v2 or Fc-IL-2wt were added before use.
- CD4 + CD25 + CD127 - cell culture medium was prepared.
- Example 1 Confirmation of the degree of regulatory T cell proliferation of fusion protein dimers including IL-2 protein and CD80 protein
- Example 1.1 Preparation of beads for stimulation of regulatory T cell proliferation
- beads for stimulating regulatory T cell proliferation using MACS GMP ExpAct Treg Kit (Cat#:170-076-119) (Miltenyi Biotec, Bergisch Gladbach, Germany) bead) was prepared. Specifically, transfer the reagent in the MACS GMP ExpAct Treg Kit containing beads for proliferation stimulation of regulatory T cells to a new tube, wait for 1 minute in a magnet, and remove the supernatant to bead (bead) was separated. At this time, the reagent in the MACS GMP ExpAct Treg Kit was 1 ⁇ L per 2 ⁇ 10 5 cells. After separation of the beads, 0.5 mL to 1 mL of the CD4+ cell culture composition of Table 1 or Table 2 (including only the basic components) not containing any additional components was added to release the beads.
- the number of cells of the purchased PBMC (Cat#: SER-PBMC-200-F) (Zen-Bio. Inc, NC 27709, USA) was measured. Then, it centrifuged for 10 minutes at 300xg. Then, after removing the supernatant buffer, 80 ⁇ L of MACs buffer per 1 ⁇ 10 7 cell number was added to release the cell pellet. Thereafter, 20 ⁇ L of CD4 MicroBeads (Cat#: 130-045-101) (Miltenyi Biotec, Bergisch Gladbach, Germany) per 1 ⁇ 10 7 cell number was dispensed, tapped, and sufficiently mixed. Then, it was reacted at 4°C to 8°C for 15 minutes.
- MACs buffer For washing, 10 mL of MACs buffer was added and centrifuged at 300 ⁇ g for 10 minutes. Then, after removing the supernatant, 500 ⁇ L of MACs buffer per 1 ⁇ 10 8 cell number was added to release the cell pellet. Thereafter, after preparing the LS column, 3 mL of MACs buffer was flowed. The cell suspension prepared above was passed through an LS column (Cat#: 130-042-401) (Miltenyi Biotec, Bergisch Gladbach, Germany). 3 mL of MACs buffer was flowed 3 times so that the cells attached to the LS column could be sufficiently washed.
- the LS column was separated from a magnet stand, and then 3 mL of MACs buffer was added and pressure was applied with a piston to recover CD4+ cells. Then, it centrifuged for 5 minutes at 300xg. Then, the number of cells was measured after removing the supernatant.
- control T cell culture solution containing beads prepared in Example 1.1 was inoculated onto the CD4+ T cells isolated above.
- the CD4+ cells prepared in Example 1.2 were seeded at 1 ⁇ 10 7 cells/mL, and GI-101 (50 nM), GI-101_WT (50 nM), and CD80-Fc dimers as additives.
- Cells of Table 1 or Table 2 each containing a body (50 nM) + Fc-IL-2v2 dimer (50 nM) or CD80-Fc dimer (50 nM) + Fc-IL-2wt dimer (50 nM) CD4+ cells were cultured under the conditions of the culture composition.
- the cells in the 6-well plate showed more than 80% confluency, they were subcultured into 25T flasks.
- the cells in the 25T flask showed more than 80% confluency
- cells were obtained when the cells in the 75T flask showed more than 80% confluency.
- the CD4+ cells recovered in Example 1.3 were centrifuged for 5 minutes at 1,300 rpm, 4°C.
- Example 1.4 The CD4 + CD25 + CD127- cells isolated in Example 1.4 were seeded in a 48-well plate at 3 ⁇ 10 5 cells/mL, and at the same time, 2 ⁇ 10 to stimulate the proliferation of regulatory T cells as in Example 1.1. Beads were isolated from 1 ⁇ L MACS GMP ExpAct Treg Kit (Cat#:170-076-119) (Miltenyi Biotec, Bergisch Gladbach, Germany) per 5 cell count. After dissolving the isolated beads in the cell culture composition (0.5 mL to 1 mL) of Table 3 or Table 4 (including only the basic components) containing no additional components, CD4 + CD25 + CD127- obtained in Example 1.4 The cells were added to the seeded well plate.
- GI-101 50 nM
- GI-101_WT 50 nM
- CD80-Fc 50 nM + Fc- CD4 + CD25 + CD127- cells were cultured under the conditions of the cell culture composition of Table 3 or Table 4 each containing IL-2wt (50 nM).
- control T cell proliferation in the control T cell culture medium composition including the RPMI1640 medium are shown in Tables 5 and 6, and the cell viability is shown in Tables 6 and 7.
- control T cell proliferation results in the culture composition containing the TexMACS medium are shown in Tables 7 and 8, and the cell viability in Tables 8 and 9.
- Example 1.6 Confirmation of the ability to secrete immunosuppressive cytokines: interleukin-10
- Example 1.5 In order to evaluate the IL-10 secretion ability of the regulatory T cells obtained in Example 1.5, the cell number was adjusted to 1 ⁇ 10 6 cells/mL, and then the culture supernatant was obtained, followed by ELISA (enzyme-linked immunosorbent assay) analysis. Performed.
- the interleukin-10 secretion ability of cells cultured from the composition containing RPMI1640 medium is as shown in FIG. 10
- the interleukin-10 secretion ability of the cells cultured from the composition containing TexMACS medium is as shown in FIG. 11. 10 and 11, it was confirmed that interleukin-10 was highly expressed from regulatory T cells in which GI-101 was added to the culture composition.
- the number of cells of the purchased PBMC (Cat#: SER-PBMC-200-F) (Zen-Bio. Inc, NC 27709, USA) was measured. Then, it centrifuged for 10 minutes at 300xg. Thereafter, after removing the supernatant buffer, 80 ⁇ L of MACs buffer per 1 ⁇ 10 7 cell number was added to release the cell pellet. Thereafter, 20 ⁇ L of CD4 MicroBeads (Cat#: 130-045-101) (Miltenyi Biotec, Bergisch Gladbach, Germany) per 1 ⁇ 10 7 cell number was dispensed, tapped, and sufficiently mixed. Then, it was reacted at 4°C to 8°C for 15 minutes.
- MACs buffer For washing, 10 mL of MACs buffer was added and centrifuged at 300 ⁇ g for 10 minutes. Then, after removing the supernatant, 500 ⁇ L of MACs buffer per 1 ⁇ 10 8 cell number was added to release the cell pellet. Thereafter, after preparing the LS Column, 3 mL of MACs buffer was flowed. The cell suspension prepared above was passed through an LS column (Cat#: 130-042-401) (Miltenyi Biotec, Bergisch Gladbach, Germany). 3 mL of MACs buffer was flowed 3 times so that the cells attached to the LS column could be sufficiently washed.
- the LS column was separated from a magnet stand, and then 3 mL of MACs buffer was added and pressure was applied with a piston to recover CD4+ cells. Then, it centrifuged for 5 minutes at 300xg. After centrifugation, the supernatant was removed and the number of cells was measured.
- Example 1.1 In order to stimulate the proliferation of regulatory T cells in the isolated CD4+ cells, 0.5 mL to 1 mL of the CD4+ cell culture composition of Table 1 or Table 2 (including only the basic component) containing no additional components was added to the above Example 1.1. As described above, the prepared beads were released, and the CD4+ cells isolated from the PBMC were inoculated.
- the CD4+ cells prepared in Example 2.1 were seeded at 1 ⁇ 10 7 cells/mL, and GI-101 (3.2 nM/50 nM) and GI-101_WT (3.2 nM/50 nM) as additives. ), CD80-Fc dimer (3.2 nM/50 nM) + Fc-IL-2v2 dimer (3.2 nM/50 nM) or CD80-Fc dimer (3.2 nM/50 nM) + Fc-IL-2wt dimer CD4+ was cultured under the conditions of the cell culture composition of Table 1 or Table 2 each containing (3.2 nM/50 nM).
- the CD4+ cells recovered in Example 2.2 were centrifuged for 5 minutes at 1,300 rpm, 4°C. In addition, the supernatant was removed, 1 mL of an Fc block (biolegend, cat#422302) diluted 1:200 in FACS buffer was added, and left on ice for 10 minutes. After that, 50 ul CD4-Pacific Blue (BioLegend, cat#317429), 50 ul CD25-PE/Cy7 (BioLegend, cat#356108), and 50 ul CD127-PE (BD, cat#557938) were added to the second sample. It was left on ice for 20 minutes.
- Example 2.3 All CD4 + CD25 + CD127- cells isolated in Example 2.3 were seeded in a 24-well plate, and at the same time, 1 ⁇ L MACS GMP per 2 ⁇ 10 5 cells number to stimulate the proliferation of regulatory T cells as in Example 2.1.
- Cell culture in Table 3 or Table 4 (basic ingredients only) without additional ingredients by separating beads from ExpAct Treg Kit (Cat#:170-076-119) (Miltenyi Biotec, Bergisch Gladbach, Germany) Beads were released into the composition (0.5 mL to 1 mL). Then, the CD4+CD25+CD127- cells were added to the seeded well plate.
- GI-101 (3.2 nM/50 nM), GI-101_WT (3.2 nM/50 nM), CD80-Fc dimer (3.2 nM/50 nM) + Fc-IL-2v2 dimer (3.2 nM / 50 nM) or CD80-Fc dimer (3.2 nM / 50 nM) + Fc-IL-2wt dimer (3.2 nM / 50 nM) containing CD4 + under the conditions of the cell culture composition of Table 3 or Table 4, respectively CD25+CD127- cells were cultured. When the cells in the 24-well plate showed more than 80% confluency, they were subcultured into a 12-well plate.
- the cells in the 12-well plate showed more than 80% confluency, they were subcultured into a 6-well plate.
- the cells in the 6-well plate showed more than 80% confluence, they were subcultured into 25T flasks.
- the cells in the 25T flask showed more than 80% confluency, they were subcultured into the 75T flask.
- the cell proliferation results in the culture composition containing RPMI1640 medium are shown in Table 9, Figs. 12a and 12b, and the cell viability is shown in Table 10, Figs. 13a and 13b.
- the cell proliferation results in the culture composition containing the TexMACS medium are shown in Table 11, FIGS. 14A and 14B, and the cell viability in Table 12, FIGS. 15A and 15B.
- the CD4+CD25+CD127- cells recovered in Example 2.4 were centrifuged for 5 minutes at 1,300 rpm, 4°C. In addition, the supernatant was removed, and 100 ul of the Fc block (biolegend, cat#422302) diluted 1:200 in FACS buffer was added and left on ice for 10 minutes, and an additional 2.5 ul CD4-PerCP-Cy5.5 (eBioscience, cat #45-0048-42), 2.5 ul CD25-APC/Cy7 (BD, cat#557753), 2.5 ul CD127-Brilliant Violet 785 (Biolegend, cat#351330) and left on ice for 20 minutes.
- FACS analysis results for the cell characteristics cultured from the RPMI1640 medium-containing composition are as shown in Figs. 16A to 16C, and the number of T cells expressing CD4 + CD25 + Foxp3 + confirmed in the culture conditions is shown in Table 13, Figs. Same as 17c.
- the FACS analysis results for the cell characteristics cultured from the composition containing TexMACS medium are as shown in Figs. 18A to 18C, and the number of T cells expressing CD4 + CD25 + Foxp3 + confirmed in the culture conditions is Table 14 and Figs. 19A to 19C Is the same as
- Example 2.4 In order to evaluate the IL-10 secretion ability of the regulatory T cells obtained in Example 2.4, the cells were cultured at 1 ⁇ 10 6 cells/mL, and then the culture supernatant was obtained and analyzed by ELISA (enzyme-linked immunosorbent assay). Was performed.
- the interleukin-10 secretion ability of cells cultured from the composition containing RPMI1640 medium is shown in FIG. 20
- the interleukin-10 secretion ability of cells cultured from the composition containing TexMACS medium is shown in FIG. 20 and 21, it was confirmed that interleukin-10 was highly expressed from regulatory T cells in which GI-101 was added to the culture composition.
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Abstract
Description
성분(Component) | 용량 | 최종 농도 | |||
성분명 | 제조사 | Cat.# | |||
기본 성분 | RPMI1640 medium | Welgene | LM 011-01 | to 500 mL | |
FBS | Hyclone | SH30084.03 | 50 mL | 10% | |
HEPES | Welgene | BB 001-01 | 5 mL | 10 mM | |
Penicillin & Streptomycin | Welgene | LS 202-02 | 5 mL | Penicillin: 100 U/ml Streptomycin: 100 μg/ml |
|
Sodium pyruvate | Welgene | LS 013-01 | 5 mL | 1 mM | |
MEM Non-Essential Amino Acids Solution | GIBCO | 11140050 | 5 mL | 1 mM | |
L-Glutamine | GIBCO | 25030149 | 5 mL | 2 mM | |
2-Mercaptoethanol | GIBCO | 21985-023 | 0.5 mL | 55 μM | |
첨가 성분 | GI-101 | GI-Innovation | - | 사용 전 즉시 첨가 |
3.2 nM, 50 nM |
GI-101_WT | GI-Cell | - | 3.2 nM, 50 nM | ||
hCD80-Fc | GI-Cell | - | 3.2 nM, 50 nM | ||
Fc-IL-2v2 | GI-Cell | - | 3.2 nM, 50 nM | ||
Fc-IL-2wt | GI-Cell | - | 3.2 nM, 50 nM |
성분(Component) | 용량 | 최종 농도 | |||
성분명 | 제조사 | Cat.# | |||
기본 성분 | TexMACS medium | Miltenyi Biotec | 170-076-307 | to 1000 mL | |
Human AB serum | Sigma | H4522 | 50 mL | 5% | |
Penicillin& Streptomycin | Welgene | LS 202-02 | 10 mL | 100 U/ml (Penicillin) 및 100 μg/ml (Streptomycin) |
|
첨가 성분 | GI-101 | GI-Innovation | - | 사용 전 즉시 첨가 |
3.2 nM, 50 nM |
GI-101_WT | GI-Cell | - | 3.2 nM, 50 nM | ||
hCD80-Fc | GI-Cell | - | 3.2 nM, 50 nM | ||
Fc-IL-2v2 | GI-Cell | - | 3.2 nM, 50 nM | ||
Fc-IL-2wt | GI-Cell | - | 3.2 nM, 50 nM |
성분(Component) | 용량 | 최종 농도 | |||
성분명 | 제조사 | Cat.# | |||
기본 성분 | RPMI1640 medium | Welgene | LM 011-01 | to 500 mL | |
FBS | Hyclone | SH30084.03 | 50 ml | 10% | |
HEPES | Welgene | BB 001-01 | 5 mL | 10 mM | |
Penicillin & Streptomycin | Welgene | LS 202-02 | 5 mL | Penicillin: 100 U/ml Streptomycin: 100 μg/ml |
|
Sodium pyruvate | Welgene | LS 013-01 | 5 mL | 1 mM | |
MEM Non-Essential Amino Acids Solution | GIBCO | 11140050 | 5 mL | 1 mM | |
L-Glutamine | GIBCO | 25030149 | 5 mL | 2 mM | |
2-Mercaptoethanol | GIBCO | 21985-023 | 0.5 mL | 55 μM | |
첨가 성분 | GI-101 | GI-Innovation | - | 사용 전 즉시 첨가 |
3.2 nM, 50 nM |
GI-101_WT | GI-Cell | - | 3.2 nM, 50 nM | ||
hCD80-Fc | GI-Cell | - | 3.2 nM, 50 nM | ||
Fc-IL-2v2 | GI-Innovation | - | 3.2 nM, 50 nM | ||
Fc-IL-2wt | GI-Cell | - | 3.2 nM, 50 nM |
성분(Component) | 용량 | 최종 농도 | |||
성분명 | 제조사 | Cat.# | |||
기본 성분 | TexMACS medium | Miltenyi Biotec | 170-076-307 | to 1000 mL | |
Human AB serum | Sigma | H4522 | 50 mL | 5% | |
Penicillin& Streptomycin | Welgene | LS 202-02 | 10 mL | 100 U/ml (Penicillin) 및 100 ㎍/ml (Streptomycin) |
|
첨가 성분 | GI-101 | GI-Innovation | - | 사용 전 즉시 첨가 |
3.2 nM, 50 nM |
GI-101_WT | GI-Cell | - | 3.2 nM, 50 nM | ||
hCD80-Fc | GI-Cell | - | 3.2 nM, 50 nM | ||
Fc-IL-2v2 | GI-Cell | - | 3.2 nM, 50 nM | ||
Fc-IL-2wt | GI-Cell | - | 3.2 nM, 50 nM |
총 세포수(×106) | |||||||
배양 조성물 첨가물질 | CD4+CD25+CD127- 세포수 | ||||||
0일 (파종) |
3일 | 5일 | 7일 | 9일 | 12일 | ||
50nM | GI-101 | 0.3 | 0.26 | 1.3 | 1.6 | 3 | 11.7 |
GI-101 WT | 0.3 | 0.23 | 1.3 | 1.5 | 2.1 | 8.4 | |
hCD80-Fc+Fc-IL-2_v2 | 0.3 | 0.25 | 1 | 1.4 | 3.2 | 10.3 | |
hCD80-Fc+Fc-IL-2_wt | 0.3 | 0.3 | 1.2 | 1.5 | 1.9 | 9.36 |
배양 조성물 첨가물질 | CD4+CD25+CD127- FACS 세포 생존률 | |||||
3일 | 5일 | 7일 | 9일 | 12일 | ||
50nM | GI-101 | 71 | 91 | 93 | 94 | 91 |
GI-101 WT | 70 | 94 | 94 | 96 | 92 | |
hCD80-Fc+Fc-IL-2_v2 | 58 | 90 | 90 | 95 | 92 | |
hCD80-Fc+Fc-IL-2_wt | 64 | 94 | 93 | 96 | 90 |
총 세포수(×106) | |||||||
배양 조성물 첨가물질 | CD4+CD25+CD127- 세포수 | ||||||
0일 (파종) |
3일 | 5일 | 7일 | 9일 | 12일 | ||
50nM | GI-101 | 0.3 | 0.8 | 2.9 | 3 | 8.4 | 10.6 |
GI-101 WT | 0.3 | 0.5 | 1.1 | 0.8 | 1.8 | 2 | |
hCD80-Fc+Fc-IL-2_v2 | 0.3 | 0.7 | 2.7 | 2.4 | 8 | 9.6 | |
hCD80-Fc+Fc-IL-2_wt | 0.3 | 0.7 | 2.9 | 2.4 | 5.4 | 7.3 |
배양 조성물 첨가물질 | CD4+CD25+CD127- FACS 세포 생존률 | |||||
3일 | 5일 | 7일 | 9일 | 12일 | ||
50nM | GI-101 | 92 | 88 | 95 | 93 | 88 |
GI-101 WT | 91 | 73 | 88 | 89 | 90 | |
hCD80-Fc+Fc-IL-2_v2 | 88 | 88 | 94 | 94 | 89 | |
hCD80-Fc+Fc-IL-2_wt | 89 | 90 | 94 | 93 | 88 |
총 세포수(×106) | ||||||||||
배양 조성물 첨가물질 | CD4+ 세포 | CD4+CD25+CD127- FACS 분리 후 세포수 | ||||||||
0일 | 3일 | 6일 | 0일 | 3일 | 5일 | 7일 | 9일 | 12일 | ||
3.2nM | GI-101 | 10 | 12.1 | 18.8 | 0.5 | 4.9 | 32 | 58 | 98 | 420 |
GI-101 WT | 10 | 13.1 | 12 | 0.6 | 2.77 | 30 | 45 | 70 | 300 | |
hCD80-Fc+ Fc-IL-2_v2 |
10 | 12.1 | 14.1 | 0.4 | 1.69 | 16 | 74 | 80 | 255 | |
hCD80-Fc+ Fc-IL-2_wt |
10 | 11.1 | 13.5 | 0.3 | 1.07 | 6.4 | 63 | 88 | 196 | |
50nM | GI-101 | 10 | 21 | 51.9 | 1.8 | 2.7 | 29 | 47 | 71 | 380 |
GI-101 WT | 10 | 23 | 45.8 | 0.8 | 2.6 | 22 | 64 | 65 | 206 | |
hCD80-Fc+ Fc-IL-2_v2 |
10 | 16.5 | 37.3 | 0.89 | 0.9 | 7.7 | 24 | 41 | 108 | |
hCD80-Fc+ Fc-IL-2_wt |
10 | 18.9 | 49.3 | 1.1 | 2.4 | 10 | 38 | 52 | 200 |
세포 생존률(%) | ||||||||||
배양 조성물 첨가물질 | CD4+ 세포 | CD4+CD25+CD127- FACS 분리 후 세포 생존률 | ||||||||
0일 | 3일 | 6일 | 0일 | 3일 | 5일 | 7일 | 9일 | 12일 | ||
3.2nM | GI-101 | 92 | 96.5 | 96 | 92 | 93 | 90 | 93 | 92 | 93 |
GI-101 WT | 92 | 96 | 95 | 89 | 92 | 89 | 93 | 92 | 92 | |
hCD80-Fc+ Fc-IL-2_v2 |
92 | 95 | 95 | 90 | 92 | 91 | 93 | 90 | 93 | |
hCD80-Fc+ Fc-IL-2_wt |
92 | 95 | 94 | 90 | 91 | 90 | 92 | 91 | 92 | |
50nM | GI-101 | 92 | 96.5 | 96 | 92 | 94 | 93 | 92 | 94 | 94 |
GI-101 WT | 92 | 96 | 95 | 90 | 92 | 94 | 92 | 93 | 93 | |
hCD80-Fc+ Fc-IL-2_v2 |
92 | 95 | 95 | 90 | 92 | 93 | 94 | 91 | 94 | |
hCD80-Fc+ Fc-IL-2_wt |
92 | 95 | 94 | 91 | 92 | 92 | 93 | 92 | 94 |
총 세포수(×106) | ||||||||||
배양 조성물 첨가물질 | CD4+ 세포 | CD4+CD25+CD127- FACS 분리 후 세포수 | ||||||||
0일 | 3일 | 6일 | 0일 | 3일 | 5일 | 7일 | 9일 | 12일 | ||
3.2nM | GI-101 | 10 | 35 | 64 | 5.8 | 5.2 | 30 | 30 | 92 | 220 |
GI-101 WT | 10 | 27 | 57 | 5 | 2.14 | 46 | 16 | 74 | 200 | |
hCD80-Fc+ Fc-IL-2_v2 |
10 | 24 | 50 | 5.48 | 3.45 | 16 | 16 | 50 | 170 | |
hCD80-Fc+ Fc-IL-2_wt |
10 | 25 | 55 | 3.5 | 2.7 | 15 | 15 | 42 | 72 | |
50nM | GI-101 | 10 | 30 | 68 | 6.2 | 5.7 | 30.6 | 30 | 240 | 500 |
GI-101 WT | 10 | 28 | 60 | 5.4 | 5 | 21 | 20 | 276 | 370 | |
hCD80-Fc+ Fc-IL-2_v2 |
10 | 23.5 | 48 | 5 | 4.2 | 13.3 | 13.3 | 113 | 150 | |
hCD80-Fc+ Fc-IL-2_wt |
10 | 24 | 54 | 3.73 | 3.8 | 19 | 19.6 | 248 | 220 |
세포 생존률(%) | ||||||||||
배양 조성물 첨가물질 | CD4+ 세포 | CD4+CD25+CD127- FACS 분리 후 세포 생존률 | ||||||||
0일 | 3일 | 6일 | 0일 | 3일 | 5일 | 7일 | 9일 | 12일 | ||
3.2nM | GI-101 | 94 | 93 | 96 | 92 | 93 | 97 | 94 | 92 | 96 |
GI-101 WT | 94 | 93 | 95 | 90 | 92 | 93 | 93 | 92 | 94 | |
hCD80-Fc+ Fc-IL-2_v2 |
94 | 95 | 95 | 90 | 92 | 95 | 93 | 96 | 95 | |
hCD80-Fc+ Fc-IL-2_wt |
94 | 94 | 94 | 91 | 91 | 90 | 92 | 91 | 95 | |
50nM | GI-101 | 94 | 96.5 | 96 | 92 | 94 | 96 | 96 | 94 | 98 |
GI-101 WT | 94 | 96 | 95 | 90 | 92 | 94 | 92 | 96 | 93 | |
hCD80-Fc+ Fc-IL-2_v2 |
94 | 95 | 95 | 91 | 88 | 93 | 94 | 91 | 96 | |
hCD80-Fc+ Fc-IL-2_wt |
94 | 95 | 94 | 93 | 92 | 92 | 93 | 92 | 94 |
총 세포수(×106) | |||||
배양 조성물 첨가물질 | CD4+ 세포 | CD4+CD25+CD127- FACS 분리 후 세포 수 | |||
0일 | 6일 | 6일 | 12일 | ||
3.2nM | GI-101 | 0.25 | 2.1 | 33.3 | 61.3 |
GI-101 WT | 0.25 | 0.97 | 18.9 | 30 | |
hCD80-Fc+ Fc-IL-2_v2 |
0.25 | 0.99 | 2.96 | 67 | |
hCD80-Fc+ Fc-IL-2_wt |
0.25 | 1.08 | 7.56 | 18 | |
50nM | GI-101 | 0.25 | 7.27 | 27.7 | 98.8 |
GI-101 WT | 0.25 | 2.75 | 28.1 | 30.3 | |
hCD80-Fc+ Fc-IL-2_v2 |
0.25 | 2.35 | 1.2 | 11.2 | |
hCD80-Fc+ Fc-IL-2_wt |
0.25 | 1.97 | 3.3 | 20 |
총 세포수(×106) | |||||
배양 조성물 첨가물질 | CD4+ 세포 | CD4+CD25+CD127- FACS 분리 후 세포 수 | |||
0일 | 6일 | 6일 | 12일 | ||
3.2nM | GI-101 | 0.3 | 38.4 | 18 | 118.8 |
GI-101 WT | 0.3 | 35.3 | 26.7 | 83.4 | |
hCD80-Fc+Fc-IL-2_v2 | 0.3 | 8.2 | 5.4 | 56.1 | |
hCD80-Fc+Fc-IL-2_wt | 0.3 | 8.7 | 5.25 | 30.2 | |
50nM | GI-101 | 0.3 | 43.1 | 20.8 | 353.5 |
GI-101 WT | 0.3 | 38.2 | 13.6 | 189.8 | |
hCD80-Fc+Fc-IL-2_v2 | 0.3 | 7.7 | 5.3 | 18 | |
hCD80-Fc+Fc-IL-2_wt | 0.3 | 10.5 | 7.2 | 28.6 |
Claims (17)
- IL-2 단백질 또는 이의 변이체 및 CD80 단백질 또는 이의 단편을 포함하는 융합단백질 이량체를 유효성분으로 포함하는 조절 T 세포 증식용 조성물.
- 제1항에 있어서,상기 IL-2 단백질 또는 이의 변이체 및 CD80 단백질 또는 이의 단편은 링커에 의해 결합된 것인, 조절 T 세포 증식용 조성물.
- 제1항에 있어서,상기 IL-2 단백질은 서열번호 10의 아미노산 서열을 갖는 것인, 조절 T 세포 증식용 조성물.
- 제1항에 있어서,상기 CD80은 서열번호 11의 아미노산 서열을 갖는 것인, 조절 T 세포 증식용 조성물.
- 제1항에 있어서,상기 융합단백질은 서열번호 9의 아미노산 서열을 갖는 것인, 조절 T 세포 증식용 조성물.
- 제1항에 있어서,상기 조절 T 세포는 CD4+CD25+CD127- 세포인 것인, 조절 T 세포 증식용 조성물.
- IL-2 단백질 또는 이의 변이체 및 CD80 단백질 또는 이의 단편을 포함하는 융합단백질 이량체를 포함하는 조절 T 세포 증식용 배지.
- 제7항에 있어서,CD4+ T 세포 배양용 배지를 더 포함하는 것인, 조절 T 세포 증식용 배지.
- 제8항에 있어서,상기 CD4+ T 세포 배양용 배지는 아미노산(amino acids), 당류(sugars), 무기염(inorganic salts) 및 비타민을 포함하는, 조절 T 세포 증식용 배지.
- IL-2 단백질 또는 이의 변이체 및 CD80 단백질 또는 이의 단편을 포함하는 융합단백질 이량체가 포함된 배지에서 CD4+CD25+CD127- T 세포를 배양하는 단계를 포함하는 조절 T 세포 배양 방법.
- 제10항에 있어서,상기 CD4+CD25+CD127- T 세포는 혈액세포에서 수득된 것인, 조절 T 세포 수득 방법.
- 제10항에 있어서,1일 내지 20일 배양하는 것인, 조절 T 세포 수득 방법.
- 제10항에 있어서,상기 CD4+CD25+CD127- T 세포는 CD4+ T 세포를 배양하는 단계; 또는 CD25+ T 세포를 배양하는 단계를 통해 수득된 것인, 조절 T 세포 수득 방법.
- 제10항 내지 제13항 중 어느 하나의 방법에 의해서 수득된 조절 T 세포.
- 제14항에 있어서,상기 조절 T 세포는 Foxp3+ 발현량이 증가된 것인, 조절 T 세포.
- 제14항의 조절 T 세포를 유효성분으로 포함하는 조절 T 세포 매개성 질환 치료용 조성물.
- 제14항의 조절 T 세포를 조절 T 세포 매개성 질환을 가지고 있는 개체에 투여하는 단계를 포함하는 조절 T 세포 매개성 질환 치료 방법.
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AU2020387479A AU2020387479B2 (en) | 2019-11-20 | 2020-11-19 | Composition for culturing regulatory T cells and use thereof |
JP2022529596A JP7425195B2 (ja) | 2019-11-20 | 2020-11-19 | 調節t細胞培養用組成物及びその用途 |
EP20890419.3A EP4063490A4 (en) | 2019-11-20 | 2020-11-19 | COMPOSITION FOR THE CULTURE OF REGULATORY T LYMPHOCYTES AND THEIR USE |
CA3152351A CA3152351A1 (en) | 2019-11-20 | 2020-11-19 | Composition for culturing regulatory t cells and use thereof |
BR112022008129A BR112022008129A2 (pt) | 2019-11-20 | 2020-11-19 | Composição da cultura de células t reguladoras e uso da mesma |
IL291909A IL291909A (en) | 2019-11-20 | 2020-11-19 | The composition of T regulatory cell culture and its use |
MX2022006000A MX2022006000A (es) | 2019-11-20 | 2020-11-19 | Composicion de cultivo de linfocitos t reguladores y su uso. |
CN202080078640.8A CN114901807B (zh) | 2019-11-20 | 2020-11-19 | 调节性t细胞培养组合物及其用途 |
CN202310807404.0A CN117004564A (zh) | 2019-11-20 | 2020-11-19 | 调节性t细胞培养组合物及其用途 |
US17/743,181 US11702633B2 (en) | 2019-11-20 | 2022-05-12 | Composition for culturing regulatory T cells and use thereof |
US18/317,199 US20230407253A1 (en) | 2019-11-20 | 2023-05-15 | Composition for culturing regulatory t cells and use thereof |
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EP (1) | EP4063490A4 (ko) |
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KR20240053223A (ko) | 2022-10-17 | 2024-04-24 | 주식회사 이뮤니스바이오 | Treg 세포 분화 및 활성화를 이용한 IBD치료용 약제학적 조성물 |
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US5229109A (en) | 1992-04-14 | 1993-07-20 | Board Of Regents, The University Of Texas System | Low toxicity interleukin-2 analogues for use in immunotherapy |
KR101667096B1 (ko) | 2011-02-10 | 2016-10-18 | 로슈 글리카트 아게 | 돌연변이 인터루킨-2 폴리펩티드 |
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CN101426533A (zh) * | 2005-12-08 | 2009-05-06 | 路易斯维尔大学研究基金会有限公司 | 免疫刺激组合物和方法 |
US10273281B2 (en) * | 2015-11-02 | 2019-04-30 | Five Prime Therapeutics, Inc. | CD80 extracellular domain polypeptides and their use in cancer treatment |
CN116903741A (zh) * | 2016-06-20 | 2023-10-20 | 科马布有限公司 | 特异性结合于pd-l1的抗体或其抗原结合片段及其用途 |
CN117003887A (zh) * | 2017-04-03 | 2023-11-07 | 豪夫迈·罗氏有限公司 | 抗pd-1抗体与突变体il-2或与il-15的免疫缀合物 |
CN110392392B (zh) | 2018-04-16 | 2021-07-09 | 华为技术有限公司 | 通信方法、通信装置及可读存储介质 |
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AU2020387479A1 (en) | 2022-05-26 |
KR102325857B9 (ko) | 2021-12-07 |
EP4063490A2 (en) | 2022-09-28 |
JP2022547352A (ja) | 2022-11-11 |
US20220290102A1 (en) | 2022-09-15 |
JP7425195B2 (ja) | 2024-01-30 |
EP4063490A4 (en) | 2023-08-23 |
CA3152351A1 (en) | 2021-05-27 |
CN114901807A (zh) | 2022-08-12 |
CN117004564A (zh) | 2023-11-07 |
BR112022008129A2 (pt) | 2022-08-23 |
AU2020387479B2 (en) | 2024-06-06 |
WO2021101273A3 (ko) | 2021-07-15 |
KR102325857B1 (ko) | 2021-11-12 |
TW202132562A (zh) | 2021-09-01 |
US11702633B2 (en) | 2023-07-18 |
TWI812901B (zh) | 2023-08-21 |
MX2022006000A (es) | 2022-06-17 |
IL291909A (en) | 2022-06-01 |
CN114901807B (zh) | 2023-07-11 |
US20230407253A1 (en) | 2023-12-21 |
KR20210061950A (ko) | 2021-05-28 |
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