JP6184952B2 - 抗cd19抗体とナイトロゲンマスタードとの併用療法 - Google Patents
抗cd19抗体とナイトロゲンマスタードとの併用療法 Download PDFInfo
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Description
本出願は、2012年6月1日に出願した米国暫定特許出願第61/654,097号、2012年5月16日に出願した米国暫定特許出願第61/647,539号、2011年8月16日に出願した米国暫定特許出願第61/523,861号の利益を請求する。これらの出願は、全体が引用により組み込まれている。
本開示の一態様は、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CD19に特異的な抗体とナイトロゲンマスタードの組合せを含む。実施例において、この組合せは相乗的である。
実施例1:MOR00208とベンダムスチンを単独で、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;ベンダムスチン:Mundipharma LOT No.:88018;FCS:PAN CAT No.:3302−P282403 LOT No.:P282403;及び、MOR00208として同じFc領域を持つRefmAb33(anti−RSV) 。
MOR00208とベンダムスチン単独で、及び組合せて細胞毒性をMEC−1細胞中で試験した。BENは、アルキル化剤であり、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。MOR00208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:100μg/mlのBEN;6.6pmのMOR00208及び6.6pmのMOR00208と100μg/mlのBENの組合せ。以下を、対照として使用した:RefmAb33又はPBMCs単独で。BENグループとMOR00208+BEN組合せグループの両方において、ADCCアッセイ測定に先立ってBENで48時間、MEC−1細胞をインキュベートした。MEC−1細胞を、1mg/mlのカルセインAMで染色し、次いで計数して、2×105/mlに調整した。PBMCsを計数して、6×106/mlに調整した。細胞死滅アッセイを以下の通り行った:96ウエルプレートを使用して、MEC−1細胞の100μl細胞懸濁液をウエルに加え、各ウエルにPBMCsの100μl細胞懸濁液を加えて、E:T比非を30:1とした。培地中で、抗体を1μg/mlに希釈した。細胞を遠心分離して再懸濁させた。ターゲット:エフェクタ細胞ペレットに、100μlの抗体溶液又は対照溶液を加えた。混合物を37℃のCO2インキュベータ中で4時間インキュベートした。細胞死滅測定を以下の通り行った:インキュベートした細胞溶液(〜100μl)をFACS管に移して、各管に200μlのFACSバッファ(DPBS+3%FCS)と0.5μlのPlストック溶液を加えた。FACS−Caliburを用いた。死滅したMEC−1細胞を、ヨウ化物で染色した。表1と図1は、生のデータを示す。
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。
表2に示すように、Chouインデックス値は、MOR00208及びベンダムスチン単独の場合に比べて、MEC−1細胞の特定の死滅に関するMOR00208とベンダムスチ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0.2、0.7及び0.75に基づいており、この値は、平均0.6である。ここで、CI<1は、相乗性を示している。したがって、MOR00208とベンダムスチンの組合せが、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。上記Chou計算の結果を確認するために、表2の正規化したデータの統計的優位性を、ボンフェローニ多重比較法を用いて評価した。James,et al.,Antibody−medicated B−cell depletion before adoptive immunotherapy with T cells expressing CD20−specific chimeric T−cell receptors facilitates eradication of leukemia in immunocompetent mice,Blood,114(27):5454−63(Epub 2009 Oct 30)参照。これは、引用により全体が組み込まれている。結果を表3に示す。
表3に示すように、ボンフェローニ多重比較法は、BEN+MOR00208の併用処置が、BENとMOR00208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MOR00208とBEN単用と併用
RAMOSヒトBurkitt’s リンパ腫細胞(ATCC番号CRL−1596、lot# 3953138);ビークル対照:150mM NaCl、25mg/mLマンニトール、pH5.5−6.0;(0.01M NaoHで調整)。Ref_mAb_33_IgG_Xen(PBS中10mg/mL、Ref_mAb_33という)。6週齢、メス、C.B−17 SCID マウス(CB17/lcr−Prkdcscid/IcrlcoCrl)を、Charles River Laboratories(Wilmington,MA)から購入し、実験に先立って9日間、実験室で順応させた。
SCIDマウスに、RAMOS細胞(〜5×106細胞/マウス)を皮下移植した。マウスの腫瘍のサイズが約150mm3になるか、稙菌後14日以上たったときに、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、マウスをグループ分けした。15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60日であった。
技術的エラーのため、18日目にはMOR00208を投与しなかった。
SCIDマウス、生存モデルにおけるヒト非ホジキンRAMOS腫瘍マウスでの、MOR00208とベンダムスチン単独及び組合せ
シクロホスファミド(Baxter,Lot.No.1A548C);ビークル対照:0.9%塩化ナトリウム、25mg/mlマンニトール、pH6.5−6.8(0.01M NaOHで調整);SCIDマウス(University of Adelaide,Waite Campus,Urrbaraie,SA,Australia,Strain C.B.−17−lgh−1b−Prkdcscid);RAMOSヒトバーキットリンパ腫細胞(ATCC number CRL−1596);Ref_mAb_33_lgG_Xen(PBS中10mg/mL、以下、Ref_mAb_33という);ベンダムスチン(Mundipharma,Lot No.83889)。
RAMOS細胞に稙菌を行う前(2日前及び1日前)に、SCIDマウスにシクロホスファミド(75mg/kg、1日2回、腹腔内投与)で前処理を行った。稙菌を行う日に、マウスを10匹ずつ7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5に示し、3日目に実行した。研究期間は60日であった。
aは、ビークル対照/Ref_mAb_33(グループ10)(p<0.001)、ベンダムスチン13mg/kg(グループ2)(p<0.001)、ベンダムスチン/MOR00208 16/3mg/kg(グループ6)(p<0.001)に対する有意差
bは、ビークル対照/Ref_mAb_33(グループ10)(p<0.05)及びベンダムスチン/MOR00208 13/3mg/kg(グループ5)(p<0.001)に対する有意差
cは、ベンダムスチン/MOR00208 16/3mg/kg(グループ6)(p<0.001)に対する有意差
dは、ビークル対照/Ref_mAb_33(グループ10)(p<0.001)に対する有意差
§は、対ビークル対照/Ref_mAb_33
*は、ILSComb(56.86%)>ILSMOR00208 3mg/kg+ILSBendamustine 13mg/kg(25.5%+(−5.88)%=19.62%)のときの、単剤治療群に対する相乗性/相乗作用
**は、ILSComb(56.86%)>ILSMOR00208 3mg/kg+ILSBendamustine 16mg/kg(25.5%+(−5.88)%=19.62%)のときの、単剤治療群に対する相乗性/相乗作用
生存期間増加の中央値%=(SurvivalTreatment−Mean Survival Conrol)/Mean Survival Control*100
生存期間は、稙菌後の日数で測定した。
MOR00208/ベンダムスチン組合せ治療(コンボ)効果の分類を、組合せのILSを、各単独治療の追加ILSと比較することによって評価した:
相乗性/相乗作用*:ILSCombo>ILSMOR00208 3mg/kg+ILSベンダムスチン
相乗効果は、単独治療の少なくとも一方が効果がない場合に増強効果として分類する。
相加性:ILSCombo=ILSMOR00208 3mg/kg+ILSベンダムスチン
拮抗性:ILSCombo<ILSMOR00208 3mg/kg+ILSベンダムスチン
表7−10及び図6に示すように、MOR00208とベンダムスチンの組合せは相乗的に挙動し、MOR00208とベンダムスチン単独の場合に比べて、非ホジキンRAMOS同所性腫瘍の生存モデルにおいて相互に有意であった。
Claims (15)
- 非ホジキンリンパ球腫治療用の医薬品の製造における、請求項1に記載の使用。
- 慢性リンパ球性白血病治療用の医薬品の製造における、請求項1に記載の使用。
- 急性リンパ芽球性白血病治療用の医薬品の製造における、請求項1に記載の使用。
- 請求項1乃至4のいずれか1項に記載の使用において、前記CD19に特異的な抗体と前記ベンダムスチンが別個に投与されることを特徴とする使用。
- 請求項1乃至5のいずれか1項に記載の使用において、前記ベンダムスチンが、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使用。
- 請求項1乃至6のいずれか1項に記載の使用において、単離した末梢血単核細胞(PBMCs)の存在下で抗体依存性細胞障害(ADCC)によるMEC−1細胞の死滅を、ベンダムスチン単独の場合より少なくとも2倍の効率で仲介できることを特徴とする使用。
- 非ホジキンリンパ球腫治療用の医薬品の製造における、請求項2に記載の使用において、前記非ホジキンリンパ球腫が、濾胞性リンパ腫、小リンパ球性リンパ腫、粘膜関連リンパ組織細胞、辺縁帯細胞、びまん性大細胞型B細胞、バーキット細胞、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使用。
- 請求項8に記載の使用において、前記非ホジキンリンパ球腫が、濾胞性リンパ腫であることを特徴とする使用。
- 請求項8に記載の使用において、前記非ホジキンリンパ球腫が、小リンパ球性リンパ腫であることを特徴とする使用。
- 請求項8に記載の使用において、前記非ホジキンリンパ球腫が、粘膜関連リンパ組織細胞であることを特徴とする使用。
- 請求項8に記載の使用において、前記非ホジキンリンパ球腫が、辺縁帯細胞であることを特徴とする使用。
- 請求項8に記載の使用において、前記非ホジキンリンパ球腫が、びまん性大細胞型B細胞であることを特徴とする使用。
- 請求項8に記載の使用において、前記非ホジキンリンパ球腫が、バーキット細胞であることを特徴とする使用。
- 請求項8に記載の使用において、前記非ホジキンリンパ球腫が、外套細胞であることを特徴とする使用。
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EP3157553A4 (en) * | 2014-06-16 | 2018-02-28 | Xencor, Inc. | Treatment for chronic lymphocytic leukemia (cll) |
US10617691B2 (en) * | 2015-05-26 | 2020-04-14 | Morphosys Ag | Combination of an anti-CD19 antibody and a Bruton's tyrosine kinase inhibitor and uses thereof |
AU2016311136B2 (en) | 2015-08-21 | 2022-02-17 | Incyte Corporation | Combinations and uses thereof |
KR20230148844A (ko) | 2016-03-29 | 2023-10-25 | 유니버시티 오브 써던 캘리포니아 | 암을 표적하는 키메라 항원 수용체 |
ES2981046T3 (es) * | 2016-05-30 | 2024-10-07 | Incyte Corp | Métodos para predecir el beneficio terapéutico de una terapia anti-CD19 en pacientes |
MX2019004942A (es) * | 2016-10-28 | 2019-08-12 | Morphosys Ag | Combinacion de anticuerpo anti cd19 con un inhibidor de bcl-2 y usos de la misma. |
HUE063119T2 (hu) | 2017-05-31 | 2024-01-28 | Morphosys Ag | Kezelési paradigma anti-CD19 antitest és venetoclax kombinációs kezeléshez |
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CZ302070B6 (cs) * | 1998-04-21 | 2010-09-29 | Micromet Ag | Jednoretezcový multifunkcní polypeptid, polynukleotid, vektor obsahující tento polynukleotid, bunka transfekovaná tímto polynukleotidem, prostredek obsahující tento polypeptid, polynukleotid nebo vektor a jejich použití a zpusob identifikace aktiváto |
JP2002544174A (ja) * | 1999-05-07 | 2002-12-24 | ジェネンテック・インコーポレーテッド | B細胞表面マーカーに結合するアンタゴニストを用いた自己免疫疾患の治療 |
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