WO2019135668A1 - Ige fc 수용체의 알파 서브유닛의 세포외 도메인, 이를 포함하는 약학적 조성물 및 이의 제조방법 - Google Patents
Ige fc 수용체의 알파 서브유닛의 세포외 도메인, 이를 포함하는 약학적 조성물 및 이의 제조방법 Download PDFInfo
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- WO2019135668A1 WO2019135668A1 PCT/KR2019/000274 KR2019000274W WO2019135668A1 WO 2019135668 A1 WO2019135668 A1 WO 2019135668A1 KR 2019000274 W KR2019000274 W KR 2019000274W WO 2019135668 A1 WO2019135668 A1 WO 2019135668A1
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- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
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- C07K14/70535—Fc-receptors, e.g. CD16, CD32, CD64 (CD2314/705F)
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- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
- A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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- A23V2200/00—Function of food ingredients
- A23V2200/30—Foods, ingredients or supplements having a functional effect on health
- A23V2200/304—Foods, ingredients or supplements having a functional effect on health having a modulation effect on allergy and risk of allergy
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Definitions
- the present invention relates to modified IgE Fc receptors and uses thereof.
- Allergic diseases such as asthma, allergic rhinitis, atopic dermatitis and food allergy are spreading at a high rate in modernized industrialized and westernized society, and the incidence of anaphylactic diseases, which are severe allergic diseases, is also increasing. These chronic immune diseases severely impair the quality of individual life and the socioeconomic costs are also soaring, and measures are needed to overcome them.
- IgE immunoglobulin E
- IgE immunoglobulin E
- IgE immunoglobulin E
- IgE is an antibody that is present in serum at very low concentrations under normal conditions. IgE is usually produced by innocuous antigens, and IgE may be elevated without special stimuli, which can lead to allergic diseases.
- Abnormally increased IgE can bind to high affinity IgE Fc receptors (Fc ⁇ RI) expressed on the surface of mast cells and basophils.
- Fc ⁇ RI IgE Fc receptors
- mast cells or basophilic granulocytes will release chemical mediators such as histamine, leukotrienes, prostaglandins, bradykinin and platelet-activating factors. The release of these chemical mediators results in allergic symptoms.
- allergic diseases can worsen symptoms due to the linkage between IgE and Fc? RI.
- Fc ⁇ RI-expressing cells are known to increase in allergic patients.
- immunoglobulin compositions capable of binding to IgE and Fc ⁇ RIIb with high affinity and inhibiting cells expressing IgE have been studied (KR10-1783272B1). Such compositions have been reported to be useful for treating IgE-mediated disorders, including allergies and asthma.
- Omalizumab Xolair
- Omalizumab which targets a fraction of Fc of IgE antibodies, has been developed and used as a treatment for intractable severe asthma and intractable urticaria.
- a polypeptide dimer comprising two monomers comprising the extracellular domain of an alpha subunit of an IgE Fc receptor.
- the monomer comprises a modified Fc region, wherein the modified Fc region and the extracellular domain of the alpha subunit of the IgE Fc receptor are bound through a hinge of an IgD antibody.
- a pharmaceutical composition for treating or preventing an allergic disease comprising the polypeptide dimer as an active ingredient.
- the polypeptide dimeric protein according to the present invention is superior to the conventional anti-IgE antibody in safety and persistence in body, and its binding ability to IgE is 70 times higher than the conventional anti-IgE antibody, omalizumab, So that the administration period can be increased.
- the polypeptide dimeric protein according to the present invention has IgE only as a single target and does not bind to the Fc gamma receptor.
- the modified dimeric Fc protein lacking antibody dependent cellular cytotoxicity (ADCC) and complement dependent cytotoxicity (CDC) to be.
- IgG1 and mast cell Fc gamma Serious side effects such as the generation of anaphylaxis which can be caused by binding with receptor III can be minimized. Therefore, it can be utilized as a new pharmaceutical composition which can replace the therapeutic agent containing the conventional anti-IgE antibody.
- Figure 1 shows SDS-PAGE and Gel IEF (isoelectric focusing) results of the proteins produced in each cell line. At this time, it can be seen that the truncated form is not generated in both reducing and non-reducing, and that the content of acidic protein is increased due to the increase of sialic acid content by sialic acid transferase gene introduction.
- Figure 2 shows SDS-PAGE results of the reduced form of the polypeptide dimer protein and the reduced form protein according to one embodiment of the present invention. Particularly, it can be seen that the purity of the polypeptide dimer is high even in the culture supernatant corresponding to the input.
- FIG. 3 is a graph showing the binding ability of omalizumab to IgE.
- OMALI JUVAW was fixed and the binding ability of IgE was analyzed according to the treatment concentration.
- FIG. 4 is a graph showing the binding capacity of a polypeptide dimer protein to IgE according to one embodiment of the present invention. As a result, the dimeric protein was immobilized and the binding potency was analyzed according to the treatment concentration of IgE.
- FIG. 5 is a graph showing the effect of the polypeptide dimeric protein (IgE TRAP ) and omalizumab IgG receptor Fc? RI (FIG. 5A), Fc? RIA (FIG. 5B), Fc? RIIB (FIG. 5C), Fc? RIIA 5e) by bio-layer interferometry (BLI) analysis.
- IgE TRAP polypeptide dimeric protein
- Fig. 6 is a graph quantifying the binding strength of IgE TRAP and IgG receptor, and omalizumab and IgG receptor.
- FIG. 7 is a graph showing the activity of inhibiting the activity of mouse-derived mast cells according to the concentration of a polypeptide dimer protein (IgE TRAP ) according to one embodiment of the present invention.
- IgE TRAP polypeptide dimer protein
- FIG. 8 is a graph showing a comparison of the inhibitory activity against the activity of human Fc ⁇ RI-expressing mouse-derived mast cells according to the concentrations of polypeptide dimeric proteins (IgE TRAP ) and Xolair (omalizumab) according to one embodiment of the present invention.
- IgE TRAP polypeptide dimeric proteins
- Xolair omalizumab
- FIG. 9 is a graph showing the administration effect of a polypeptide dimer protein according to one embodiment of the present invention in a food allergy model.
- Fc? RIa-ECD IgE Fc receptor
- IgE refers to an antibody protein known as immunoglobulin E. IgE has affinity for mast cells and blood basophils. In addition, an IgE antibody and its corresponding antigen (allergen) react to produce an inflammatory reaction. In addition, IgE is known to be an antibody that causes anaphylaxis, which is a sudden secretion of mast cells or basophils.
- IgE Fc receptor is also referred to as the Fc ⁇ receptor and binds to the Fc portion of IgE.
- Fc ⁇ RI High affinity receptor for IgE Fc
- Fc ⁇ R II The low affinity receptor for IgE Fc
- Fc ⁇ RI is expressed in mast cells, basophils.
- IgE antibodies bound to Fc ⁇ RI are cross-linked by polyvalent antigens, degranulation occurs in mast cells or basophils, releasing various chemical messengers including histamine. This release causes an immediate allergic reaction.
- the Fc [epsilon] RI is a membrane protein composed of one [alpha] chain and two [gamma] chains linked by a [beta] chain and a disulfide bond.
- IgE binds to the ⁇ chain (Fc ⁇ RI ⁇ ), Fc ⁇ RI ⁇ has a size of about 60 kDa, and consists of a hydrophobic domain existing in the cell membrane and a hydrophilic domain existing outside the cell membrane.
- IgE binds to the extracellular domain of the? Chain.
- the alpha subunit of the IgE Fc receptor may have the amino acid sequence described in NP_001992.1.
- the extracellular domain (Fc? RIA-ECD) of the alpha subunit of the IgE Fc receptor may have the amino acid sequence of SEQ ID NO: 1.
- the extracellular domain of the alpha subunit of the IgE Fc receptor may be a fragment or variant of the extracellular domain of the alpha subunit of the IgE Fc receptor, so long as it is capable of binding IgE.
- the mutant can be carried out through a method of replacing, deleting or adding one or more proteins in the wild-type Fc ⁇ RIa-ECD (Extracellular domain), so long as it does not alter the function of the ⁇ chain of Fc ⁇ R I.
- Such various proteins or peptides may be 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, or 99% identical to the amino acid sequence of SEQ ID NO:
- the Fc ⁇ RIa-ECD of SEQ ID NO: 1 may be encoded by a polynucleotide having the sequence of SEQ ID NO: 5.
- modified Fc region means a region in which some of the Fc portion of the antibody has been modified.
- Fc region includes heavy chain constant region 2 (CH2) and heavy chain constant region 3 (CH3) of immunoglobulin and does not include variable region and light chain constant region 1 (CH1) of heavy and light chains of immunoglobulin Does not say protein.
- the modified Fc region means that some amino acids in the Fc region are substituted or produced by combining different Fc regions.
- the modified Fc region may have the amino acid sequence of SEQ ID NO: 2.
- the modified Fc region of SEQ ID NO: 2 may be encoded by a polynucleotide having the sequence of SEQ ID NO: 6.
- modified Fc region of the present invention may be a natural type sugar chain, an increased sugar chain compared to the native type, a reduced sugar chain compared to the native type, or a form in which the sugar chain is removed.
- the immunoglobulin Fc sugar chain can be modified by conventional methods such as chemical methods, enzymatic methods, and genetic engineering methods using microorganisms.
- the " modified Fc region " of the present invention may lack ADCC (antibody dependent cellular cytotoxicity) and CDC (complement dependent cytotoxicity) functions because it has no binding site for Fc [gamma] R or C1q.
- the modified Fc region and the Fc ⁇ RI ⁇ -ECD can be linked through the hinge of the IgD antibody.
- the hinge of the IgD antibody is composed of 64 amino acids and may be selected from 20 to 60 consecutive amino acids or 25 to 50 consecutive amino acids or 30 to 40 amino acids. In one embodiment, the hinge of an IgD antibody may comprise 30 or 49 amino acids as follows.
- the hinge of the IgD antibody may be a hinge variant in which the hinge region is modified, and the hinge may include at least one cysteine.
- the hinge mutant may be a modification of the hinge sequence of the IgD antibody in order to minimize the incidence of truncation during protein production.
- the hinge may comprise a sequence as follows:
- Xaa1 can be Lys or Gly
- Xaa2 is Glu , GIy or Ser.
- the hinge may have the amino acid sequence of SEQ ID NO: 3 and SEQ ID NO: 19, thereby minimizing the occurrence of truncations during the production of proteins.
- the hinge may have the amino acid sequence of SEQ ID NO: 4, thereby minimizing the occurrence of truncations during the production of proteins.
- Thr can be glycosylated.
- the 13th, 14th, 18th and 19th Thr can be glycosylated.
- Preferably all four amino acids can be glycosylated.
- the glycosylation may be O-glycosylation.
- polypeptide dimer provided by the present invention may be in the form of a combination of two extracellular domains of the alpha subunit of the IgE Fc receptor and two modified Fc region-bound monomers, as described above.
- the polypeptide dimer may be a form in which the same two monomers are bound by cysteine located at the hinge region.
- the polypeptide dimer may be a form in which two different monomers are combined.
- one monomer comprises the extracellular domain of the alpha subunit of the IgE Fc receptor and the other monomer contains a fragment of the extracellular domain of the alpha subunit of the IgE Fc receptor Lt; / RTI >
- one specific example of the monomer may have the amino acid sequence of SEQ ID NO: 20, SEQ ID NO: 21 or SEQ ID NO: 22.
- polypeptide dimer provided by the present invention exhibits 10 to 100 times, 20 to 90 times, 20 to 70 times, 30 to 70 times, and 40 to 70 times higher IgE binding ability as compared with omalizumab, which is an anti-IgE antibody, Can exhibit 70-fold higher IgE binding to omalizumab.
- a polynucleotide encoding a monomer comprising an extracellular domain of an alpha subunit of an IgE Fc receptor coupled to a modified Fc region.
- the polynucleotide may additionally include a signal sequence or a leader sequence.
- signal sequence refers to a nucleic acid that encodes a signal peptide that directs secretion of a protein of interest.
- the signal peptide is cleaved after translation in the host cell.
- the signal sequence of the present invention is a nucleotide encoding an amino acid sequence that initiates the movement of a protein through an ER (endoplasmic reticulum) membrane.
- Signal sequences useful in the present invention include, but are not limited to, antibody light chain signal sequences such as antibody 14.18 (Gillies et al., J. Immunol. Meth. 1989. 125: 191-202), antibody heavy chain signal sequences such as the MOPC141 antibody heavy chain signal And other signal sequences known in the art (see, for example, Watson et al., Nucleic Acid Research, 1984. 12: 5145-5164). do.
- Signal sequences are well known in the art and typically comprise 16 to 30 amino acid residues, but may include more or fewer amino acid residues.
- Conventional signal peptides consist of three regions: a basic N-terminal region, a central hydrophobic region, and a more polar C-terminal region.
- the central hydrophobic region comprises 4 to 12 hydrophobic residues that immobilize the signal sequence through the membrane lipid bilayer during migration of the immature polypeptide.
- signal sequences are often cleaved in the lumen of the ER by cellular enzymes known as signal peptidases.
- the signal sequence may be a secretion signal sequence of tPa (tissue plasminogen activating), HSV gDs (signal sequence of Herpes simplex virus glycoprotein D), or growth hormone.
- tPa tissue plasminogen activating
- HSV gDs signal sequence of Herpes simplex virus glycoprotein D
- growth hormone e.gDs
- the secretory signal sequence can be used by substituting a codon having a high frequency of expression in the host cell.
- the extracellular domain monomer of the alpha subunit of the IgE Fc receptor to which the signal sequence, modified Fc region is bound may have the amino acid sequence of SEQ ID NO: 11 or SEQ ID NO:
- the protein of SEQ ID NO: 11 or SEQ ID NO: 13 may be encoded by a polynucleotide having the sequence of SEQ ID NO: 12 and SEQ ID NO: 14, respectively.
- an expression vector loaded with a polynucleotide encoding said monomer.
- the polynucleotide may have the sequence of SEQ ID NO: 12 and SEQ ID NO: 14.
- vector as used herein can be introduced into a host cell and recombined and inserted into a host cell genome.
- nucleic acid means comprising a nucleotide sequence that can be spontaneously replicated as an episome.
- vectors include linear nucleic acids, plasmids, phagemids, cosmids, RNA vectors, viral vectors and analogs thereof.
- viral vectors include, but are not limited to, retroviruses, adenoviruses, and adeno-associated viruses.
- the plasmid may comprise a selectable marker such as an antibiotic resistance gene, and the host cell harboring the plasmid may be cultured under selective conditions.
- the term "gene expression” or "expression” of a protein of interest is understood to mean transcription of a DNA sequence, translation of an mRNA transcript, and secretion of a fusion protein product or fragment thereof.
- a useful expression vector may be RcCMV (Invitrogen, Carlsbad) or a variant thereof.
- the expression vector includes a human CMV (cytomegalovirus) promoter for promoting continuous transcription of a target gene in mammalian cells, and a bovine growth hormone polyadenylation signal sequence for raising the level of post-transcriptional RNA stability can do.
- a host cell into which the expression vector is introduced.
- the term "host cell” as used herein refers to prokaryotic and eukaryotic cells into which a recombinant expression vector can be introduced.
- the terms "transfected,” “transformed,” and “transfected” refer to the introduction of a nucleic acid (eg, a vector) into a cell using techniques known in the art.
- Preferred host cells that may be used in the present invention include immortal hybridoma cells, NS / 0 myeloma cells, 293 cells, Chinese hamster ovary cells (CHO cells), HeLa cells, human amniotic fluid cells (CapT cells) .
- it may be a CHO cell.
- the host cell may be one in which the vector and the vector carrying the sialic acid transferase gene are introduced.
- the sialic acid transferase may be a 2,3-sialic acid transferase or a 2,6-sialic acid transferase.
- the 2,6-sialyltransferase may have the amino acid sequence of SEQ ID NO: 15.
- compositions for treating or preventing an allergic disease comprising the polypeptide dimer as an active ingredient.
- allergic disease means a pathological symptom caused by an allergic reaction mediated by mast cell activation such as degranulation of mast cells.
- allergic diseases include food allergy, atopic dermatitis, Asthma, allergic rhinitis, allergic conjunctivitis, allergic dermatitis, allergic contact dermatitis, anaphylaxis, urticaria, pruritus, insects, allergic rhinitis, allergic rhinitis, Allergies, chronic idiopathic urticarial, and drug allergies.
- the allergic disease may be IgE mediated.
- the active ingredient may be contained in any amount (effective amount) as long as it can exhibit anti-allergic activity, depending on the purpose of use, formulation, compounding purpose and the like.
- effective amount refers to the amount of active ingredient capable of inducing an allergic effect. Such effective amounts can be determined experimentally within the ordinary skill of those skilled in the art.
- the pharmaceutical composition may further comprise a pharmaceutically acceptable carrier.
- the pharmaceutically acceptable carrier may be any carrier that is non-toxic to the patient. Distilled water, alcohols, fats, waxes and inert solids may be included as carriers. Pharmacologically acceptable adjuvants (buffers, dispersants) may also be included in the pharmacological composition.
- the pharmaceutical composition of the present invention may be prepared into oral or parenteral formulations according to the route of administration by a conventional method known in the art, including pharmaceutically acceptable carriers in addition to the active ingredient.
- pharmaceutically acceptable means that the application (prescribing) subject does not have the above-mentioned toxicity that is adaptable without inhibiting the activity of the active ingredient.
- the pharmaceutical composition of the present invention When the pharmaceutical composition of the present invention is prepared into an oral formulation, it may be formulated into powder, granules, tablets, pills, sugar tablets, capsules, liquids, gels, syrups, suspensions, wafers And the like.
- suitable pharmaceutically acceptable carriers include sugars such as lactose, glucose, sucrose, dextrose, sorbitol, mannitol, xylitol, starch such as corn starch, potato starch and wheat starch, cellulose, methylcellulose, ethylcellulose, Cellulose derivatives such as sodium carboxymethyl cellulose and hydroxypropylmethyl cellulose, polyvinyl pyrrolidone, water, methylhydroxybenzoate, propylhydroxybenzoate, magnesium stearate, mineral oil, malt, gelatin, talc, And the like.
- a diluent such as a filler, an extender, a binder, a wetting agent, a disintegrant, a surfactant, and / or an excipient, if necessary.
- the pharmaceutical composition of the present invention When the pharmaceutical composition of the present invention is prepared into a parenteral dosage form, it may be formulated in the form of an injection, transdermal drug delivery, nasal inhalation, and suppository together with a suitable carrier according to methods known in the art.
- a suitable carrier sterilized water, ethanol, polyol such as glycerol or propylene glycol, or a mixture thereof, may be used, and preferably, a solution of Ringer's solution, phosphate buffered saline containing triethanolamine or sterilized by injection Water, or isotonic solution such as 5% dextrose may be used.
- a preferable dosage of the pharmaceutical composition of the present invention is 0.01 to 10 g / kg, preferably 0.01 to 10 g / kg, per day depending on the condition, body weight, sex, age, 1 g / kg.
- the administration can be carried out once or several times a day. Such dosages should in no way be interpreted as limiting the scope of the invention.
- composition of the present invention is preferably a mammal and a person, particularly a human.
- composition for anti-allergy of the present invention may further comprise, in addition to the active ingredient, any compound or natural extract known to have safety and anti-allergic activity for the purpose of raising or reinforcing the anti-allergic activity.
- a food composition for improving and alleviating allergic symptoms comprising the polypeptide dimer as an active ingredient.
- the polypeptide dimer may be combined with appropriate delivery means for efficient delivery into the intestines.
- the food composition of the present invention can be prepared in any form and can be used in various forms such as beverages such as tea, juice, carbonated beverage, ionic drink, processed oil such as milk and request route, tablets, capsules, Powders, flakes, pastes, syrups, gels, jellies, bars, and the like.
- the food composition of the present invention may be classified into any product category as long as it comply with the laws and regulations on the time of manufacture and distribution in the legal and functional category. For example, it may be a health functional food according to the Act on Health Functional Foods, or a confectionery, bean curd, beverage, beverage, special-purpose food, etc. according to each food type in the Food Code of Food Sanitation Act .
- other food additives that may be included in the food composition of the present invention, reference may be made to the Food Code or the Food Additive Code in accordance with the Food Sanitation Act.
- a method for producing a sialyltransferase gene comprising: culturing a host cell into which a polynucleotide encoding a monomer and a sialic acid transferase gene have been introduced; And recovering the polypeptide dimer.
- the present invention also provides a method for producing a polypeptide dimer.
- the polynucleotide encoding the monomer can be introduced into the host cell in the form loaded on the expression vector.
- the sialic acid transferase gene can be introduced into a host cell in a form loaded in a vector.
- a step of introducing into a host cell a vector loaded with a polynucleotide encoding a monomer and a vector loaded with a sialic acid transferase gene is carried out.
- the sialic acid transferase may be a 2,3-sialic acid transferase or a 2,6-sialic acid transferase.
- the polypeptide dimer may be purified from a culture medium or a cell extract.
- a culture medium or a cell extract For example, after obtaining a supernatant of the culture medium in which the polypeptide dimer is secreted, it can be concentrated using a commercially available protein concentration filter such as an Amicon or Millipore Pellicon ultrafiltration unit.
- the concentrate can then be purified by methods known in the art.
- the tablet can be obtained using a matrix coupled to protein A.
- polypeptide dimer produced by the above-mentioned method for producing a dimer.
- the polypeptide dimer has a high sialic acid content, the content of acidic protein is very high as compared with the theoretical pI value.
- a pharmaceutical composition for treating or preventing an allergic disease which comprises a polypeptide dimer prepared by the above-mentioned method for producing a dimer, as an active ingredient.
- a food composition for improving or alleviating an allergic symptom comprising a polypeptide dimer prepared by the above-mentioned method for producing a dimer as an active ingredient.
- a method for treating or preventing an allergic disease comprising administering to a subject a polypeptide dimer comprising two monomers comprising the extracellular domain of the alpha subunit of the IgE Fc receptor (Fc ⁇ RIa-ECD) Provide prevention methods.
- the subject may be a mammal, preferably a human.
- administration can be administered orally or parenterally.
- parenteral administration can be performed by subcutaneous administration, intravenous administration, mucosal administration, muscle administration, and the like.
- Example 1 Preparation of a polypeptide comprising Fc ⁇ RIa-ECD and a modified Fc region
- the C-terminal modified polypeptide of the extracellular domain of the extracellular domain of the alpha subunit of the IgE Fc receptor was prepared according to the method disclosed in U.S. Patent No. 7,867,491.
- the extracellular domain of the? Chain of Fc? RI having the amino acid sequence of SEQ ID NO: 1 and the modified immunoglobulin Fc of SEQ ID NO: 2 are replaced with a hinge linked protein (Fc? RIECD-Fc1) of SEQ ID NO: 19, (Fc ⁇ RI ⁇ ECD-Fc2) and a hinge-linked protein (Fc ⁇ R1 ⁇ ECD-Fc3) of SEQ ID NO: 4 were cloned into a pAD15 vector (genexin) to which a gene coding for each protein was ligated to obtain Fc ⁇ RI ⁇ ECD -Fc protein expression vector. The expression vector was then transfected into CHO DG44 (from Dr. Chasin, Columbia University, USA).
- an expression vector in which an ⁇ -2,6-sialyltransferase gene was cloned into pCI Hygro vector (Invitrogen) at the time of transfection of the cell line was simultaneously transfected to express sialic acid-added Fc ⁇ RI ⁇ ECD-Fc2ST and Fc ⁇ RI ⁇ ECD-Fc3ST protein Were prepared separately.
- the Fc ⁇ RI ⁇ ECD-Fc3 cell line showed 16.9 ug / 10 6 cells productivity after 2 ⁇ M methotrexate amplification.
- the Fc ⁇ RI ⁇ ECD-Fc3 cell line (Fc ⁇ RI ⁇ ECD-Fc3ST) co-transfected with the 2,6-sialyltransferase showed a productivity of 17.5 ⁇ g / 10 6 cells after 1 ⁇ M methotrexate amplification.
- Fc ⁇ RI ⁇ ECD-Fc2 cell line showed 20.9 ug / 10 6 cells productivity under the condition of 0.5 uM methotrexate amplification.
- Fc ⁇ RI ⁇ ECD-Fc2 cell line (Fc ⁇ RI ⁇ ECD-Fc2ST) co-transfected with 2,6-sialyltransferase exhibited productivity of 25.1 ⁇ g / 10 6 cells after 0.1 ⁇ M methotrexate amplification. That is, it was confirmed that the Fc ⁇ RI ⁇ ECD-Fc2 cell line injected with the 2,6-sialic acid transferase co-transfected under the condition of 0.1 uM methotrexate amplification was the most excellent.
- Fc ⁇ RI ⁇ ECD-Fc3, ii) Fc ⁇ RI ⁇ ECD-Fc3ST and iii) Fc ⁇ RI ⁇ ECD-Fc2ST among the cell lines selected in Example 1 were cultured in a 60 ml scale by a batch culture method.
- the cultured medium was purified using Protein-A affinity column, and purified protein was subjected to SDS-PAGE and size-exclusion HPLC (SE-HPLC) to confirm protein purity.
- Gel-IEF was performed under the following test conditions to confirm the content of sialic acid transfection enzyme-introduced protein sialic acid, and it was confirmed that the content of acidic protein was increased due to the increase of sialic acid content.
- Fc ⁇ RI ⁇ ECD-Fc2ST cell line was batch-cultured in a 1 L flask at a volume of 250 ml and purified using Protein-A affinity column. Subsequently, the culture supernatant and the purified product were subjected to SDS PAGE analysis after running for 30 minutes with 4% 15% TGX TM gel (BIO-RAD) with Tris-Glycine SDS (TGS) buffer at 200V. As a result, it was confirmed that not only the protein with a very high purity (98% or more) was purified by the first step purification but also the protein was expressed with a very high purity even in the culture supernatant. This means that the process development stage can be simplified in developing Fc ⁇ RI ⁇ ECD-Fc protein expressed in the cell line as a drug, and as a result, the development cost as a drug can be significantly reduced.
- Fc ⁇ RI ⁇ ECD-Fc2, Fc ⁇ RI ⁇ ECD-Fc3, and iv) Fc ⁇ RI ⁇ ECD-Fc3ST which are purified through the method of Example 2 above, and omalizumab Omalizumab (trade name: Xolair)).
- IgE binding ability was measured by coating IgE on the channel of a protein GLC sensor chip (Bio-Rad, Cat # 176-5011), and omalizumab or FceR1 ⁇ ECD-Fc protein was flowed at various concentrations at a rate of 30 ⁇ l per minute .
- the experiment was carried out by repeating the above steps after confirming the zero base using 25 mM NaOH as the regeneration buffer. Thereafter, the binding curve was confirmed using a protein binding analyzer (Proteon XPR36, BIO-RAD, USA), and the results are shown in Tables 3, 3 and 4.
- Fc3ST 1.49 x 10 -4 40 times better than omalibium KD (kd / ka)
- Fc2ST 2.16 x 10 -10 69 times better than omalizumab
- the association rate (ka) value of the polypeptide dimer according to one embodiment of the present invention was measured to be 1.5 to 2.0 times smaller than that of omalizumab. That is, the binding ability to substances other than IgE was 1.5 to 2.0 times lower than that of omalizumab.
- the dissociation rate (kd) value of the polypeptide dimer according to one embodiment of the present invention was measured to be 40 to 106 times larger than that of omalizumab.
- omalizumab decreases binding after a certain time after binding with IgE, whereas the polypeptide dimer of the Fc ⁇ RI ⁇ ECD fusion protein of the present invention has a property that once bound to IgE, I could confirm.
- the polypeptide dimer of the present invention is not easily separated from IgE, and its ability to be maintained in a bound state is much better than omalizumab.
- the value of the equilibrium dissociation constant (KD ⁇ kd / ka) of the polypeptide dimer according to one embodiment of the present invention is 22 to 69 times higher than that of omalizumab.
- the Fc ⁇ RI ⁇ ECD fusion protein of the present invention was found to have a significantly increased binding capacity to IgE as compared to omalizumab.
- Beta hexosaminidase assay was performed for in vitro activity analysis of the Fc ⁇ RI ⁇ ECD fusion protein of the present invention.
- the Fc ⁇ RI ⁇ ECD-Fc2 protein according to one embodiment of the present invention was mixed with mouse IgE (1 ug / mL) for each concentration and incubated at room temperature (20 ° C) for 30 minutes to prepare a sample.
- mouse IgE 1 ug / mL
- mast cells derived from mouse bone marrow were washed with Hank's balanced salt solution (HBSS) buffer to remove the medium. After measuring the number of cells, 5 ⁇ 10 5 cells were suspended in 40 ⁇ L of HBSS buffer Lt; / RTI >
- the concentration of the polypeptide dimer of one embodiment of the present invention was half (0.5 ug / mL) of mouse IgE, the inhibitory rate was about 49.4%, and the same concentration (1 ug / mL ) Showed a mast cell inhibition rate of about 99.4%. That is, it can be seen that the activity of IgE-induced bone marrow-derived mast cells is greatly suppressed by the FceRIa-ECD polypeptide dimer of the present invention.
- Fc ⁇ RI ⁇ ECD fusion protein versus Xolair were prepared by concentration, mixed with human IgE (1 ug / mL) and incubated at room temperature for 30 minutes.
- human Fc [epsilon] RI gene was introduced, and mast cells derived from and differentiated from the bone marrow of mice in which the mouse Fc [epsilon] RI gene had been removed were prepared.
- the prepared mast cells were washed with HBSS buffer, and then 5 ⁇ 10 5 cells were injected into 60 ⁇ L of HBSS buffer. 20 ⁇ L of pre-incubated samples were added to the prepared mast cells and then cultured in a 5% CO 2 incubator at 37 ° C. for 30 minutes.
- the cells were cultured in a 37 ° C 5% CO 2 incubator for 30 minutes. After centrifugation at 1,500 rpm at 4 ° C, 30 ⁇ L of the supernatant was separated. 30 ⁇ L of the separated supernatant and 30 ⁇ L of the substrate (4-Nitrophenyl N-acetyl- ⁇ -glucosaminide, 5.84 mM) were mixed well and cultured in a 5% CO 2 incubator at 37 ° C for 25 minutes. Then, 140 uL of 0.1 M sodium carbonate buffer (pH 10) was added to terminate the reaction.
- 0.1 M sodium carbonate buffer pH 10
- the absorbance at 405 nm was measured to compare the amount of secreted ⁇ -hexosaminidase, and the inhibitory effect of each drug on mast cell inhibition was confirmed.
- the results are shown in Fig.
- the IC 50 of the Fc ⁇ RI ⁇ ECD fusion protein was measured to be approximately 11.16 ng / mL, and the IC 50 of the Xolair protein was estimated to be approximately 649.8 ng / mL.
- the Fc ⁇ RI ⁇ ECD fusion protein was found to have a 58-fold higher inhibitory effect on mast cell activity than Xolair.
- OVA ovalbuproliferative protein
- mice After 2 doses of the OVA, i.e., on the 31st day, the mice were divided into three groups of 7 mice. The first group, Fc ⁇ RI ⁇ ECD-Fc2ST fusion protein, was divided into two groups: high dose (200 ug), low dose (20 ug), and third dose. The mice were sacrificed at day 37, and the number of mast cells in the small intestine, the IgE concentration in blood, and the degranulation enzyme concentration of mast cells in blood (MCPT-1, Mast cell protease-1) were analyzed.
- MCPT-1 the degranulation enzyme concentration of mast cells in blood
- mice belonging to the group to which Fc ⁇ RI ⁇ ECD-Fc2ST was administered at a high concentration showed the effect of alleviating the food allergy in a concentration-dependent manner compared with the mice belonging to the non-administered group.
- gaggacagcg gcgagtacaa gtgccagcac cagcaggtga acgagagcga gcccgtgtac
- VVMEGQPLFL RCHGWRNWDV YKVIYYKDGE ALKYWYENHN ISITNATVED SGTYYCTGKV
- VVMEGQPLFL RCHGWRNWDV YKVIYYKDGE ALKYWYENHN ISITNATVED SGTYYCTGKV
- caggacgtgg gcaccaagac cacaatccgg ctgatgaaca gccagctggt gacaaccgag
- VVDVSQEDPE VQFNWYVDGV EVHNAKTKPR EEQFNSTYRV VSVLTVLHQD WLNGKEYKCK
- VVDVSQEDPE VQFNWYVDGV EVHNAKTKPR EEQFNSTYRV VSVLTVLHQD WLNGKEYKCK
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Abstract
Description
Version | Media | MTX conc. | Productivity | ||
3-day culture | Batch culture(mg/ml) | ||||
ug/mL | ug/106cells | ||||
FcεRIαECD-Fc2 | Ex-cellDHFR | 500nM | 37.23 | 20.9 | 225 |
FcεRIαECD-Fc2+ a2,6-ST | 100nM | 45.4 | 25.1 | 338.2 | |
FcεRIαECD-Fc3 | 2uM | 27.0 | 16.9 | 180.4 | |
FcεRIαECD-Fc3+ a2,6-ST | 1uM | 17.5 | 10.2 | 101.7 |
시험 조건 | |
Gel | pH3-10 IEF gel 1.0mm |
Sample buffer | IEF sample buffer (2X) |
Loading condition | 100V 1hr, 200V 1hr, 500V 2hr |
Samples Items | FcεRIa ECD-Fc | 오말리주맙 | 비고 | ||
Drug type | Fc 융합 단백질 | Anti-IgE Ab | |||
Bindingaffinity | ka(Association rate) | Fc2 | 2.14 x 105 | 4.05 x 105 | 오말리주맙 대비 1.9배 약함 |
Fc2ST | 2.64 x 105 | 오말리주맙 대비 1.5배 약함 | |||
Fc3 | 1.98 x 105 | 오말리주맙 대비 2.0배 약함 | |||
Fc3ST | 2.40 x 105 | 오말리주맙 대비 1.7배 약함 | |||
kd (Dissociation rate) | Fc2 | 8.29 x 10-5 | 6.02 x 10-3 | 오말리주맙 대비 73배 좋음 | |
Fc2ST | 5.69 x 10-5 | 오말리주맙 대비 106배 좋음 | |||
Fc3 | 1.33 x 10-4 | 오말리주맙 대비 45배 좋음 | |||
Fc3ST | 1.49 x 10-4 | 오말리주맙 대비 40배 좋음 | |||
KD (kd/ka) | Fc2 | 3.88 x 10-10 | 1.49 x 10-8 | 오말리주맙 대비 38배 좋음 | |
Fc2ST | 2.16 x 10-10 | 오말리주맙 대비 69배 좋음 | |||
Fc3 | 6.72 x 10-10 | 오말리주맙 대비 22배 좋음 | |||
Fc3ST | 6.21 x 10-10 | 오말리주맙 대비 24배 좋음 |
Claims (19)
- IgE Fc 수용체의 알파 서브유닛의 세포외 도메인(FcεRIa-ECD)을 포함하는 단량체 두 개를 포함하는 폴리펩티드 이량체로서,상기 단량체는 변형된 Fc 영역을 포함하며,상기 변형된 Fc 영역과 FcεRIa-ECD는 힌지를 통해 결합된 것을 특징으로 하는, 폴리펩티드 이량체.
- 제1항에 있어서,상기 IgE Fc 수용체의 알파 서브유닛의 세포외 도메인은 서열번호 1의 아미노산 서열 또는 이의 단편인, 폴리펩티드 이량체.
- 제1항에 있어서,상기 변형된 Fc 영역은 서열번호 2인, 폴리펩티드 이량체.
- 제1항에 있어서,상기 힌지는 면역글로불린 IgD에서 유래한 힌지 영역 또는 이의 변이체인 것인, 폴리펩티드 이량체.
- 제4항에 있어서,상기 면역글로불린 IgD에서 유래한 힌지 영역 또는 이의 변이체는 적어도 하나의 시스테인을 포함하는, 폴리펩티드 이량체.
- 제4항에 있어서,상기 면역글로불린 IgD에서 유래한 힌지 영역 또는 이의 변이체는Arg Asn Thr Gly Arg Gly Gly Glu Glu Lys Lys Xaa1 Xaa2 Lys Glu Lys Glu Glu Gln Glu Glu Arg Glu Thr Lys Thr Pro Glu Cys Pro (서열번호 17)이며,Xaa1은 Lys 또는 Gly 이며,Xaa2는 Glu, Gly또는 Ser인, 폴리펩티드 이량체.
- 제4항에 있어서,상기 면역글로불린 IgD에서 유래한 힌지 영역 또는 이의 변이체는Ala Gln Pro Gln Ala Glu Gly Ser Leu Ala Lys Ala Thr Thr Ala Pro Ala Thr Thr Arg Asn Thr Gly Arg Gly Gly Glu Glu Lys Lys Xaa3 Xaa4 Lys Glu Lys Glu Glu Gln Glu Glu Arg Glu Thr Lys Thr Pro Glu Cys Pro (서열번호 18)이며,Xaa1은 Lys 또는 Gly 이며,Xaa2는 Glu, Gly 또는 Ser인, 폴리펩티드 이량체.
- 제1항에 있어서,상기 힌지는 서열번호 3, 서열번호 4 및 서열번호 19로 이루어진 군에서 선택되는 어느 하나의 아미노산 서열을 갖는, 폴리펩티드 이량체.
- 제1항의 IgE Fc 수용체의 알파 서브유닛의 세포외 도메인(FcεRIa-ECD)을 포함하는 단량체를 코딩하는 폴리뉴클레오티드.
- 제9항의 폴리뉴클레오티드가 적재된 발현 벡터.
- 제10항의 발현 벡터가 도입된 숙주 세포.
- 제1항 내지 제8항에 따른 폴리펩티드 이량체를 유효성분으로 포함하는 알러지성 질환 치료용 또는 예방용 약학적 조성물.
- 제12항에 있어서,상기 알러지성 질환은 식품 알러지, 아토피 피부염(atopic dermatitis), 천식(asthma), 알러지성 비염(allergic rhinitis), 알러지성 결막염(allergic conjunctivitis), 알러지성 피부염(allergic dermatitis), 만성 특발성 두드러기(Chronic idiopathic urticarial), 및 알러지성 접촉성 피부염(allergic contact dermatitis)으로 구성된 군에서 선택된 하나인 것을 특징으로 하는, 약학적 조성물.
- 제1항 내지 제8항에 따른 폴리펩티드 이량체를 유효성분으로 포함하는 알러지성 증상의 개선 또는 완화용 식품 조성물.
- 제9항의 폴리뉴클레오티드와 시알산 전이효소 유전자가 도입된 세포를 배양하는 단계; 및폴리펩티드 이량체를 회수하는 단계를 포함하는,폴리펩티드 이량체 생산 방법.
- 제15항에서 수득된 폴리펩티드 이량체.
- 제16항의 폴리펩티드 이량체를 유효성분으로 포함하는 알러지성 질환 치료용 또는 예방용 약학적 조성물.
- 제16항의 폴리펩티드 이량체를 유효성분으로 포함하는 알러지성 증상의 개선 또는 완화용 식품 조성물.
- 제1항 및/또는 제16항의 폴리펩티드 이량체를 개체에 투여하는 단계를 포함하는 알러지 질환 치료 또는 예방 방법.
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JP2020557108A JP7128291B2 (ja) | 2018-01-08 | 2019-01-08 | IgE Fc受容体のアルファサブユニットの細胞外ドメイン、その物を含む医薬組成物、およびその物を製造する方法 |
EP19735715.5A EP3738977A4 (en) | 2018-01-08 | 2019-01-08 | EXTRACELLULAR DOMAIN OF ALPHA SUB-UNIT OF THE FC IGE RECEIVER, PHARMACEUTICAL COMPOSITION INCLUDING IT AND ITS PRODUCTION PROCESS |
RU2020122056A RU2796162C2 (ru) | 2018-01-08 | 2019-01-08 | Внеклеточный домен альфа-субъединицы fc-рецептора ige, фармацевтическая композиция, содержащая его, и способ его получения |
CN201980007917.5A CN111587251B (zh) | 2018-01-08 | 2019-01-08 | IgE Fc受体的α亚基的胞外域、包含其的药物组合物及其制备方法 |
CN202410672936.2A CN118638245A (zh) | 2018-01-08 | 2019-01-08 | IgE Fc受体的α亚基的胞外域、包含其的药物组合物及其制备方法 |
AU2019205743A AU2019205743B2 (en) | 2018-01-08 | 2019-01-08 | Extracellular domain of alpha subunit of IgE Fc receptor, pharmaceutical composition comprising same and method for producing same |
BR112020013805-3A BR112020013805A2 (pt) | 2018-01-08 | 2019-01-08 | domínio extracelular da subunidade alfa do receptor de ige fc, composição farmacêutica compreendendo o mesmo e método para produzir o mesmo |
PE2020000919A PE20210043A1 (es) | 2018-01-08 | 2019-01-08 | Dominio extracelular de subunidad alfa del receptor fc de ige, composicion farmaceutica que comprende el mismo y metodo para producir el mismo |
MX2020007030A MX2020007030A (es) | 2018-01-08 | 2019-01-08 | Dominio extracelular de subunidad alfa del receptor fc de ige, composicion farmaceutica que comprende el mismo y metodo para producir el mismo. |
SG11202005858WA SG11202005858WA (en) | 2018-01-08 | 2019-01-08 | Extracellular domain of alpha subunit of ige fc receptor, pharmaceutical composition comprising same and method for producing same |
CA3086222A CA3086222A1 (en) | 2018-01-08 | 2019-01-08 | Extracellular domain of alpha subunit of ige fc receptor, pharmaceutical composition comprising same and method for producing same |
IL275591A IL275591B2 (en) | 2018-01-08 | 2020-06-22 | Extracellular region of the alpha subunit of the Fe receptor, a pharmaceutical preparation containing it and a method for its production |
PH12020551021A PH12020551021A1 (en) | 2018-01-08 | 2020-06-30 | Extracellular domain of alpha subunit of ige fc receptor, pharmaceutical composition comprising same and method for producing same |
JP2022130533A JP7488303B2 (ja) | 2018-01-08 | 2022-08-18 | IgE Fc受容体のアルファサブユニットの細胞外ドメイン、その物を含む医薬組成物、およびその物を製造する方法 |
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MX2022000285A (es) * | 2019-07-08 | 2022-02-03 | Gi Innovation Inc | Dimero de polipeptido con alto contenido de acido sialico, que comprende el dominio extracelular de la subunidad alfa del receptor fc de ige y composicion farmaceutica que comprende el mismo. |
JP2023534024A (ja) * | 2020-07-17 | 2023-08-07 | ジーアイ イノベーション, インコーポレイテッド | Ige fc受容体アルファサブユニット細胞外ドメイン及び抗il-4抗体を含む融合タンパク質並びにその融合タンパク質の使用 |
KR20220011931A (ko) * | 2020-07-22 | 2022-02-03 | (주)지아이이노베이션 | IgE Fc 수용체를 포함하는 융합단백질 및 이를 포함하는 개 알레르기성 질환 치료 용도 |
MX2023010457A (es) | 2021-03-09 | 2023-09-14 | Gi Innovation Inc | Formulacion de proteina de fusion que incluye el dominio extracelular de la subunidad alfa del receptor fc de ige. |
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CA3086222A1 (en) | 2019-07-11 |
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CN111587251B (zh) | 2024-05-28 |
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US20210070833A1 (en) | 2021-03-11 |
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IL275591B2 (en) | 2023-06-01 |
EP3738977A1 (en) | 2020-11-18 |
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CN118638245A (zh) | 2024-09-13 |
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IL275591A (en) | 2020-08-31 |
SG11202005858WA (en) | 2020-07-29 |
JP7488303B2 (ja) | 2024-05-21 |
JP7128291B2 (ja) | 2022-08-30 |
PH12020551021A1 (en) | 2021-05-31 |
PE20210043A1 (es) | 2021-01-08 |
BR112020013805A2 (pt) | 2020-12-01 |
KR102038675B1 (ko) | 2019-10-30 |
CL2020001798A1 (es) | 2020-11-13 |
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