JP2014525925A - 抗−cd19抗体とプリン類似体の併用治療 - Google Patents
抗−cd19抗体とプリン類似体の併用治療 Download PDFInfo
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Abstract
【選択図】図5
Description
本発明は、ここに引用により組み込まれている、2011年8月16日に出願した米国暫定特許出願第61/523,862号の利益を請求する。
実施例1:MOR208とフルダラビンを単独で、及び組合せて使用したMEC−1細胞増殖の抑制
MEC−1細胞:慢性B細胞白血病細胞株DSMZ#ACC497;細胞培地:Iscove’s Modified Dulbecco’s Medium(IMDM)with GlutaMAX(商標)、Invitrogen,Cat No.:31980−048,20% FCS;PBMCs:10%のFCSを加えたRPMI1640,with stabile Glutamine,PAN Biotech GmbH,Cat No.:P04−13500;Biochrome AG CAT No.:L6115 LOT No.:1050T;フルダラビン:Bayer,25mg/ml in ddH2O,LOT No.:9100ST;及び、MOR208として同じFc領域を持つRefmAb33(anti−RSV)。
MOR208とフルダラビン単独で、及び組合せて細胞毒性をMEC−1細胞中で試験した。FLUは、プリン類似体であり、したがって、MEC−1細胞中の直接細胞毒性を介して機能する。MOR208は、CD19をターゲットとしており、追加的に、MEC−1を死滅させる際にADCCを介して機能する。以下の群について、MEC−1細胞死滅を測定した:18μg/mlのFLU;66pmのMOR208、及び66pmのMOR0208と18μg/mlのFLUの組合せ。これらの濃度は、MOR208及びFLUについて、EC50近辺又はEC50である場合に選択した。
Fu=細胞死パーセンテージ(処理細胞株)/細胞死パーセンテージ(非処理細胞株)
CI−isobol法は、薬剤間の相乗性の定量評価を行う。組合せインデックス(CI)は、単一又は組合せた薬剤治療の染料効果データから推測する。1より小さいCIの値は、相乗性を表しており、CI=1は、相加効果を表しており、CI>1は、拮抗を表している。薬剤の相互作用(相乗性又は拮抗性)が大きいほど、CIの値は1から遠くなる。
CI=D1/DX1+D2/DX2
と規定されている。ここで、D1及びD2は、それぞれ組合せの薬剤1と薬剤2の当量であり;DX1とDX2は、組合せの効果と同じ効果を与えるであろう薬剤1と薬剤2のみでの処置の当量である。この当量DX1とDX2は、単一の薬剤処置の染料効果データから推測する必要がある。本質的に、半量効果方程式は、各薬剤のデータに合致している。ある薬剤の半量効果方程式から、効果(すなわち、Fa、Fu)を生み出すのに必要な当量(すなわち、D)を推測することができる。加法線からポイントが遠くなるにつれて、1とCIとの差が大きくなり、(相乗又は拮抗)効果が強くなる。
表2に示すように、Chouインデックス値は、MOR208及びフルダラビン単独の場合に比べて、MEC−1細胞の特定の死滅に関するMOR208とフルダラビンの組合せの明白な相乗性を示している。この結論は、3つの実験の各々のChou計算値である0.03、0.3及び0.3に基づいており、この値は、平均0.21である。ここで、CI<1は、相乗性を示している。したがって、MOR208とフルダラビンの組合せが、ヒトの非ホジキンリンパ球種(NHL)、慢性リンパ球性白血病(CLL)、及び/又は、急性リンパ芽球性白血病(ALL)の治療において相乗的に挙動する。
表3に示すように、ボンフェローニ多重比較法は、FLU+MOR208の併用処置が、FLUとMOR208の単用処置より、MEC−1を特異的死滅において、統計的により有効であることを示している。
皮下移植(SC)したヒトのRamos Burkitt’s B細胞リンパ腫腫瘍成長モデルにおけるMOR208とFLUの単用と併用
RAMOSヒトバーキットリンパ腫細胞(ATCC番号CRL−1596、lot# 3953138);ビークル対照:0.9%塩化ナトリウム、25mg/mlマンニトール、pH7.0;SCIDマウス(University of Adelaide, Waite Campus,Urrbaraie,SA,Australia,Strain C.B.−17−lgh−1b−Prkdcscid)。
6乃至7週齢のメス、C.B.−17 SCIDマウスに、RAMOS細胞(〜5×106細胞/マウス)を皮下移植した。稙菌後14日目にマウスを8匹ずつ10グループに分けた。各グループが比較的同じサイズの大きさの腫瘍を持つようにした。14日目に処置を開始した。治療計画を表4に示す。研究期間は63日であった。
両評価項目は、腫瘍成長の阻害手段であり、両評価項目において、第38日目で腫瘍成長(%)が下がり、4000mgに達した時間(%)が延びた。MOR208+FLU125の組合せは、MOR208とFLU単独の場合に比べて、明らかな相乗性を示した。
SCIDマウスのヒト非ホジキンRAMOS腫瘍におけるMOR208とフルダラビンの単用と併用、生存モデル
シクロホスファミド(Fluka,Buchs Switerland,Lot.No.07551661);ビークル対照:0.9%塩化ナトリウム、25mg/mlマンニトール、pH7.0:SCIDマウス(University of Adelaide,Waite Campus,Urrbaraie,SA,Australia,Strain C.B.−17−lgh−1b−Prkdcscid);RAMOSヒトリンパ腫細胞(ATCC number CRL−2638)。
RAMOS細胞に稙菌を行う前の2日間、SCIDマウスにシクロホスファミドで前処理を行った(5日前と4日前)。稙菌を行う日(3日前)に、マウスを8匹ずつ10群に分け、尾静脈に静脈内注射によって、1×106RAMOS細胞を稙菌した。各群に対する投与計画を表9に示し、0日目に実行した。研究期間は3週間であった。
この方法は、ここに引用により全体が組み込まれている、Brest Cancer Research and Treatment 46:255−278(1997)、Issues in experimental design and endopoint analysis in the study of experimental cytotoxic agents in vivo in breast cancer and other modelsに記載されている。
拮抗 (AB)/C <(A/C)×(B/C)
相加 (AB)/C =(A/C)×(B/C)
相乗 (AB)/C >(A/C)×(B/C)
ここで、Aは、MOR208を用いた治療であり;Bは、FLUを単用した治療であり;Cは、治療ビークルに対する応答であり;ABは治療AとBの組合せである。各研究群についての数日の平均生存時間と、Clarke et al.分析を表10に示す。
MOR208とFLUの組合せは、MOR208とFLUの単用の場合に比べて、平均生存に数において明らかな相乗性を示した。
表10は、MOR208とフルダラビン組合せ125mg/kgが、MOR208とフルダラビン単用の場合に比べて、バーキットリンパ腫SCIDマウスモデルにおいて、平均生存時間が相乗的に伸びたことを示す。表11に示すように、インビボでMOR208とフルダラビン125mg/kgを併用した場合の平均生存時間の増加が、MOR208とフルダラビン単用の場合に比べて、統計的に有意であることを確認した。したがって、MOR208とフルダラビンの組合せは、ヒトの非ホジキンリンパ腫(NHL)、慢性リンパ球腫白血病(CLL)、及び/又は、急性リンパ球腫白血病(ALL)の治療においても、相乗的に作用すると考えられる。
Claims (9)
- CD19に特異的な抗体の相乗的組合せにおいて、非ホジキンリンパ球種、慢性リンパ球性白血病、及び/又は、急性リンパ芽球性白血病の治療に用いる、配列SYVMH(配列番号:1)のHCDR1領域と、配列NPYNDG(配列番号:2)のHCDR2領域と、配列GTYYYGTRVFDY(配列番号:3)のHCDR3領域と、配列RSSKSLQNVNGNTYLY(配列番号:4)のLCDR1領域と、配列RMSNLNS(配列番号:5)のLCDR2領域と、配列MQHLEYPIT(配列番号:6)のLCDR3領域と、フルダラビンを含む抗体と交差競合する抗体を含むことを特徴とする組合せ。
- 請求項1に記載の組合せにおいて、前記抗体が、配列SYVMH(配列番号:1)のHCDR1領域と、配列NPYNDG(配列番号:2)のHCDR2領域と、配列GTYYYGTRVFDY(配列番号:3)のHCDR3領域と、配列RSSKSLQNVNGNTYLY(配列番号:4)のLCDR1領域と、配列RMSNLNS(配列番号:5)のLCDR2領域と、配列MQHLEYPIT(配列番号:6)のLCDR3領域を含む抗体と同じエピトープに結合する抗体を含むことを特徴とする組合せ。
- 請求項1又は2に記載の組合せにおいて、前記抗体が、配列SYVMH(配列番号:1)のHCDR1領域と、配列NPYNDG(配列番号:2)のHCDR2領域と、配列GTYYYGTRVFDY(配列番号:3)のHCDR3領域と、配列RSSKSLQNVNGNTYLY(配列番号:4)のLCDR1領域と、配列RMSNLNS(配列番号:5)のLCDR2領域と、配列MQHLEYPIT(配列番号:6)のLCDR3領域を含むことを特徴とする組合せ。
- 請求項1乃至5のいずれか1項に記載の組合せにおいて、CD19に特異的な前記抗体とフルダラビンが別個に投与されることを特徴とする組合せ。
- 請求項1乃至6のいずれか1項に記載の組合せにおいて、前記フルダラビンが、前記CD19に特異的な抗体の投与の前に投与されることを特徴とする組合せ。
- 請求項1乃至7のいずれか1項に記載の組合せにおいて、当該組合せが、単離したPBMCsの存在下でADCCによるMEC−1細胞の死滅を、フルダラビン単独の場合より少なくとも2倍の効率で死滅できることを特徴とする組合せ。
- 非ホジキンリンパ球種の治療に用いる請求項1乃至8のいずれか1項に記載の組合せにおいて、この非ホジキンリンパ球腫が、濾胞性リンパ腫、小リンパ球腫リンパ腫、粘膜関連リンパ組織、辺縁帯}、びまん性大細胞型B細胞、バーキット、及び外套細胞からなる群から選択されることを特徴とする組合せ。
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JP2018523685A (ja) * | 2015-08-21 | 2018-08-23 | モルフォシス・アーゲー | 組み合わせおよびその使用 |
JP2021113194A (ja) * | 2015-08-21 | 2021-08-05 | モルフォシス・アーゲー | 組み合わせおよびその使用 |
JP2022137089A (ja) * | 2016-10-28 | 2022-09-21 | モルフォシス・アーゲー | 抗cd19抗体とbcl-2阻害剤との組み合わせおよびその使用 |
JP2020521777A (ja) * | 2017-05-31 | 2020-07-27 | モルフォシス・アーゲー | 抗cd19抗体とベネトクラクスとの組み合わせ治療のための治療パラダイム |
JP7399713B2 (ja) | 2017-05-31 | 2023-12-18 | モルフォシス・アーゲー | 抗cd19抗体とベネトクラクスとの組み合わせ治療のための治療パラダイム |
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