JP7462011B2 - 重鎖定常領域が修飾された多重特異性重鎖抗体 - Google Patents
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Description
本出願は、2020年4月29日に出願された米国仮特許出願第63/017,589号、及び2020年11月2日に出願された米国仮特許出願第63/108,796号の出願日の優先権を主張し、その出願の開示は、その全体が参照により本明細書に援用される。
タンパク質工学の進歩により、2つ以上の標的に対して結合親和性を有する多重特異性抗体の製造及び臨床利用は成功を収めている。しかしながら、それらのヘテロ二量体の性質により、多重特異性抗体において、所望の組み合わせの結合配列、したがってポリペプチドサブユニットの適切な対形成を容易にするために、適切な手段を利用しなければならない。Wang et al.,mAbs 10:8,1226-1235(2018)。
従来のIgG抗体では、重鎖と軽鎖の会合は、軽鎖定常領域と重鎖のCH1定常ドメインとの間の疎水性相互作用に部分的に起因している。重鎖フレームワーク2(FR2)及びフレームワーク4(FR4)領域にも、重鎖と軽鎖の間のこの疎水性相互作用に寄与する追加の残基が存在する。
腫瘍壊死因子スーパーファミリーメンバー17(TNFRSF17)(UniProt Q02223)としても知られるBCMAは、形質細胞及び形質芽細胞上に排他的に発現する細胞表面受容体である。BCMAは、腫瘍壊死因子(TNF)スーパーファミリーの2つのリガンド:APRIL(TNFSF13;TALL-2及びTRDL-1としても知られる増殖誘導リガンド;BCMAの高親和性リガンド)ならびにB細胞活性化因子(BAFF)(BLyS;TALL-1;THANK;zTNF4;TNFSF20;及びD8Ertd387eとしても知られる;BCMAの低親和性リガンド)の受容体である。APRILとBAFFは、BCMAに結合して形質細胞の生存を促進する成長因子である。BCMAは、ヒト多発性骨髄腫(MM)の悪性形質細胞にも高度に発現している。BCMAに結合する抗体は、例えば、Gras et al.,1995,Int.Immunol.7:1093-1106,WO200124811及びWO200124812に記載されている。TACIと交差反応する抗BCMA抗体は、WO2002/066516に記載されている。BCMA及びCD3に対する二重特異性抗体は、例えば、US2013/0156769 A1及びUS2015/0376287 A1に記載されている。抗BCMA抗体-MMAEまたは抗BCMA抗体-MMAF複合体は、多発性骨髄腫細胞の死滅を選択的に誘導することが報告されている(Tai et al.,Blood 2014,123(20):3128-38)。Ali et al.,Blood 2016,128(13):1688-700は、臨床試験(#NCT02215967)で、BCMAを標的とするキメラ抗原受容体(CAR)T細胞が、ヒト患者において多発性骨髄腫の寛解をもたらしたことを報告した。
PSMAは、前立腺特異的膜抗原及びグルタミン酸カルボキシペプチダーゼII(UniProt Q04609)とも呼ばれ、N-アセチル化-α結合-酸性ジペプチダーゼ、葉酸ヒドロラーゼ、及びジペプチジルペプチダーゼ活性を有するII型膜貫通タンパク質である。これは、ヒトのFOLH1遺伝子によってコードされており、19アミノ酸の細胞質ドメイン、24アミノ酸の膜貫通部分、及び707アミノ酸の細胞外部分からなる。このタンパク質は、非共有結合ホモダイマーとして酵素的に活性である。PSMAは、前立腺上皮組織に発現し、前立腺癌及び固形腫瘍の新生血管系で上方制御される。また、脳、腎臓、唾液腺などの健康な組織でも低レベルで発現するが、悪性前立腺組織での過剰発現は、前立腺癌の治療的処置の魅力的な標的となる。また、悪性新生血管系での発現が高いことから、固形腫瘍の治療または画像診断にも適し得る。PSMAを標的とするモノクローナル抗体、抗体薬物複合体、及びキメラ抗原受容体T細胞は、転移性前立腺癌の治療に関して記載されている(Hernandez-Hoyos et al 2016,PMID:27406985、DiPippo et al 2014,PMID:25327986、Serganova et al 2016,PMID:28345023)。さらに、PSMAに特異的な放射性核種複合体が、前立腺癌の画像化及び治療のために調査されているところである(例えば、Hofman et al.,2018 PMID:29752180)。
Bリンパ球表面抗原B4(UniProt P15391)としても知られるCD19は、すべてのヒトB細胞で発現するが、形質細胞には認められない細胞表面受容体である。CD19は、細胞質シグナル伝達タンパク質を膜に動員する膜貫通タンパク質であり、CD19/CD21複合体内で作用して、B細胞受容体シグナル伝達経路の閾値を低下させる。CD19は、比較的大きな240アミノ酸の細胞質尾部を有する。細胞外Ig様ドメインは、潜在的なジスルフィド結合非Ig様ドメインと、N結合炭水化物付加部位に分けられる。細胞質尾部は、C末端付近に少なくとも9つのチロシン残基を含み、その一部はリン酸化されていることが示されている。CD20及びCD22に加えて、CD19の発現がB細胞系統に限定されていることから、CD19は、B細胞悪性腫瘍の治療処置に関して魅力的な標的となる。CD19に特異的な多くのモノクローナル抗体及び抗体薬物複合体が記載されている(例えば、Naddafi et al.2015,PMC4644525)。さらに、抗CD19キメラ抗原受容体T細胞は、白血病の治療に承認されている(例えば、Sadelain et al.2017,PMID:29245005)。
「含む」とは、記載する要素が組成物/方法/キットに必要であることを意味するが、特許請求の範囲内で他の要素が組成物/方法/キットなどを形成するために含まれ得る。
本発明は、ヒトBCMAに結合する、近縁の抗体のいくつかのファミリーに関する。これらのファミリーの抗体の可変領域は、米国特許公開第US20190352412号、第US20200157232号及び第US20200048348号、ならびにPCT公開第WO2018237037号及び第WO2019006072号に記載されており、その出願の開示は参照によりその全体が本明細書に援用される。代表的な抗BCMA重鎖抗体可変ドメイン配列の非限定的な選択を以下の表1に示す。
本発明は、ヒトCD19に結合する近縁の抗体のファミリーを提供する。このファミリーの抗体の可変領域は、PCT公開第WO2020018922号に記載されており、その開示はその全体が参照により本明細書に援用される。抗CD19抗体配列は、多重特異性、例えば二重特異性抗体としての使用を含むがこれに限定されない、開発及び治療法または他の使用のために本明細書中で提供される配列から選択され得る。いくつかの実施形態では、二重特異性または多重特異性抗体を提供し、これは、TCAを含むがこれに限定されない、本明細書中で述べる構成のいずれかを有し得る。二重特異性抗体は、CD19以外のタンパク質に特異的な抗体の少なくとも重鎖可変領域を含む。
本発明は、ヒトPSMAに結合する、近縁の抗体ファミリーを提供する。このファミリーの抗体は、表2に示す配列番号24~54の提供される重鎖可変領域(VH)配列によって例示される。この抗体のファミリーは、臨床治療薬(複数可)としての有用性に寄与する多くの利点を提供する。抗体には、様々な結合親和性を有するメンバーが含まれているため、所望の結合親和性を有する特定の配列が選択され得る。
いくつかの実施形態では、二重特異性または多重特異性抗体を提供し、これは、限定されないが、二重特異性三本鎖抗体様分子を含む、本明細書中で述べる構成のいずれかを有し得る。いくつかの実施形態では、多重特異性抗体は、第1の抗原(例えば、CD3)に対する結合特異性を有する重鎖/軽鎖ペア、及び重鎖のみ抗体由来の重鎖を含み得る。特定の実施形態では、重鎖のみ抗体由来の重鎖は、CH1ドメインを含まず、CH2及び/またはCH3及び/またはCH4ドメインを含むFc部分を含む。特定の一実施形態では、二重特異性抗体は、エフェクター細胞上の抗原(例えば、T細胞上のCD3タンパク質)に対する結合特異性を有する重鎖/軽鎖ペア、及びBCMA、PSMA、またはCD19に対する結合特異性を有する抗原結合ドメインを含む重鎖のみ抗体由来の重鎖を含む。
本発明の多重特異性抗体は、当技術分野で公知の方法によって調製することができる。好ましい実施形態では、本明細書の重鎖抗体は、内在性免疫グロブリン遺伝子がノックアウトまたは無効化されているトランスジェニックマウス及びラットを含むトランスジェニック動物、好ましくはラットによって産生される。好ましい実施形態では、本明細書の重鎖抗体は、UniRat(商標)で産生される。UniRat(商標)は、内在性免疫グロブリン遺伝子がサイレンシングされており、ヒト免疫グロブリン重鎖導入遺伝子座を使用して、完全ヒトHCAbの多様で天然に最適化されたレパートリーを発現する。ラットの内在性免疫グロブリン遺伝子座は、様々な技術を使用してノックアウトまたはサイレンシングすることができるが、UniRat(商標)では、ジンクフィンガー(エンド)ヌクレアーゼ(ZNF)技術を使用して、内在性ラット重鎖J遺伝子座、軽鎖Cκ遺伝子座及び軽鎖Cλ遺伝子座を不活性化した。卵母細胞へのマイクロインジェクション用のZNF構築物は、IgH及びIgLノックアウト(KO)系統を生成することができる。詳細については、例えば、Geurts et al.,2009,Science 325:433を参照のこと。Ig重鎖ノックアウトラットの特徴決定は、Menoret et al.,2010,Eur.J.Immunol.40:2932-2941によって報告されている。ZNF技術の利点は、最大、数kbの欠失を介して遺伝子または遺伝子座をサイレンシングするための非相同末端結合もまた、相同組込みの標的部位を提供することができる点である(Cui et al.,2011,Nat Biotechnol 29:64-67)。UniRat(商標)で産生されたヒト重鎖抗体は、UniAbs(商標)と呼ばれ、従来の抗体で攻撃することができないエピトープに結合することができる。それらの高い特異性、親和性、及びサイズの小ささは、単一及び多特異的な応用に理想的である。
適切な薬学的に許容される担体と混合させた本発明の1つ以上の多重特異性結合化合物を含む医薬組成物を提供することは、本発明の別の態様である。本明細書中で使用する薬学的に許容される担体は、アジュバント、固体担体、水、緩衝液、もしくは治療成分を保持するために当技術分野で使用される他の担体、またはそれらの組み合わせが例示されるが、これらに限定されない。
本明細書に記載の重鎖のみ抗体、多重特異性抗体、及び医薬組成物は、限定されないが、本明細書にさらに記載する病態及び疾患を含む、標的タンパク質(例えば、CD3、BCMA、PSMA、またはCD19)の発現を特徴とする疾患及び病態の治療に使用することができる。
非還元及び還元SDS-PAGE分析によってヘテロ二量体形成を分析し、ヒンジ及びFc領域における様々な変異、及びノブインホール変異を含む本発明の実施形態による抗体が、首尾よく発現し、所望のヘテロ二量体の組み合わせに組み立てられ得るかどうかを判定した。これを試験するために、抗体構築物を組換えCHO細胞培養で発現させた。次いで、回収した細胞培養液をプロテインAアフィニティークロマトグラフィーで精製し、産生された様々な抗体断片を分析した。次いで、プロテインA溶出プールを還元及び非還元ゲルで分析して、異なる種を可視化した。
Fcγ受容体-IgG相互作用を、Ni-NTAバイオセンサー(ForteBio)を使用してOctetプラットフォームで分析した。Ni-NTAバイオセンサーには、ニッケル(Ni2+)を充填したQIAGENのTris-NTAが先端に固定化されている。Ni-NTAは、組換えタンパク質に結合させたHISタグに結合する。このフォーマットでは、Fcγ受容体タンパク質をリガンドとしてバイオセンサーにロードし、続いてIgGと結合させる。本発明の実施形態による抗体を調査して、それらのFc領域と、バイオセンサー上に固定化されたFcγ受容体タンパク質との間の相互作用の程度を分析した。
ヒトPSMAまたはDU-145細胞株(ATCC HTB-81)を発現するように安定的に形質移入されたLNCaP細胞株(ATCC:CRL-1740)、22Rv1細胞株(ATCC CRL-2505)、PC3細胞株(ATCC CRL-1435)を使用したフローサイトメトリー(Guava easyCyte 8HT,EMD Millipore)によって、PSMA陽性細胞への結合を評価した。簡潔に述べると、50,000個の標的細胞を、精製UniAbs(商標)の希釈系列で、4℃にて30分間染色した。インキュベーション後、細胞をフローサイトメトリー緩衝液(1×PBS、1%BSA、0.1%NaN3)で2回洗浄し、R-フィコエリトリン(PE)と複合体化したヤギF(ab’)2抗ヒトIgGで染色して(Southern Biotech、カタログ番号2042-09)、細胞に結合した抗体を検出した。4℃で20分間インキュベートした後、細胞をフローサイトメトリー緩衝液で2回洗浄し、平均蛍光強度(MFI)をフローサイトメトリーで測定した。二次抗体のみで染色された細胞のMFIをバックグラウンドシグナルの測定に使用し、各抗体の結合をバックグラウンドの倍数に変換した。カニクイザルPSMA陽性細胞への結合を、以下の変更を加えた同じプロトコルを使用して測定した:標的細胞は、カニクイザルPSMAの細胞外ドメインを発現するように一過性に形質移入したFreestyle 293-F細胞(ThermoFisher R79007)由来の細胞であった。いくつかの実験では、EC50値を、GraphPad Prism 7を使用して計算した。
表9に示すように、抗PSMAクローンID350123は、架橋配列GGGGSGGGGS(配列番号71)でクローンID345497配列に連結されたクローンID346181配列からなる。クローンID350122は、同じリンカー配列によって連結されたクローンID346181の2つの繰り返しからなる。クローンID350123は、PSMA上の異なるエピトープを認識する2つの抗PSMAドメインからなるため、バイパラトピックである。クローンID350122は二価であるが、同じ抗PSMAドメインのタンデムからなるため、バイパラトピックではない。様々な三本鎖抗体様分子(TCA)の模式図を図1のパネルA~Cに示す。
T細胞リダイレクトによるPSMA陽性前立腺腫瘍細胞の多重特異性抗体媒介性細胞死滅
休止T細胞を使用したアッセイ
標的細胞を96ウェルプレートにウェルあたり15,000細胞で播種し、37℃で一晩増殖させた。インキュベーション後、休止状態のヒトT細胞と一緒に、多量の多重特異性抗体を、エフェクター細胞と標的細胞の比率10:1で添加し、37℃でさらに48時間または72時間インキュベートした(LNCaP、MDA-PCa-2b及びPC3-PSMA細胞でのアッセイでは48時間、22Rv1細胞でのアッセイでは72時間)。細胞増殖試薬WST-1(Sigmaカタログ番号:11644807001)またはフローサイトメトリーのいずれかを使用して細胞死を測定した。いくつかの実験では、インキュベーション後、ただし標的細胞の生存率の分析より前に、各上清の少量の試料を回収し、サイトカイン産生の分析用に保存した。細胞生存率をWST-1試薬で分析した場合、試薬ストックを各ウェルに1:10希釈で添加し、37℃で90分間インキュベートした。次いで、450nm(参照690nm)で吸光度を測定し、特異的溶解率(%)を計算した。
ヒト汎T細胞をプレート結合OKT3及びIL-2で3日間、事前活性化した後、新鮮なIL-2中でさらに1日インキュベートした。標的細胞をトリプシン処理し、Calcein-AM(ThermoFisher C3100MP)をロードし、活性化T細胞とE:T比率20:1で混合し、96ウェルプレートのウェルに添加した。異なる多重特異性抗体の希釈系列を加えた後、37℃で4時間インキュベートした。次いで、上清を黒色の96ウェルプレートに移し、吸光度を480nm/520nm ex/emで測定し、カルセインの放出を定量化した。T細胞の非存在下でインキュベートした標的細胞を使用して、インタクトな腫瘍細胞の自発的なカルセインの放出を正規化した。標的細胞を含有する対照ウェルへ2%Triton-Xを添加することにより、最大の細胞溶解に対応するカルセインシグナルを計算することができた。この値を使用して、各実験ウェルを、最大の細胞溶解に対するパーセントとして報告した。GraphPad prism 7を使用してデータ分析を実施した。
休止T細胞を用いた腫瘍細胞傷害性アッセイにおいて、サイトカイン産生を分析した。これらのアッセイの設計については、他の場所で詳しく説明されている。アッセイの完了時に上清を回収した(22Rv1細胞を使用したアッセイでは72時間のインキュベーション後、他のすべての細胞株では48時間後)。IL-2(Biolegend 431804)及びIFNγ(Biolegend 430104)を検出するために、ELISAキットを製造元のプロトコルに従って使用した。サイトカインのレベルが各キットに付属の標準曲線の直線部分内に収まるように、ELISA分析の前に試験上清を希釈した。いくつかの場合では、試験ウェル中でサイトカインを検出することができず、値がアッセイの定量下限以下であると報告された。
PSMA陽性腫瘍細胞を96ウェルプレートにウェルあたり25,000細胞で播種し、37℃で一晩増殖させた。休止PBMCから分離されたヒト汎T細胞(Miltenyi 130-096-535)を、製造元の説明書(ThermoFisher C34554)に従って系統追跡色素CFSEで標識した。次いで、100,000個の標識された汎T細胞を、腫瘍細胞を含有するウェルに加え、続いて一連の抗体を希釈し、37℃、8%CO2でインキュベートした。5日間のインキュベーション後、細胞を穏やかに混合し、フローサイトメトリープレートに移した。細胞をペレット化し、上清を除去した後、APCと複合体化した抗CD8(Biolegend 301049)及びPEと複合体化した抗CD4(Biolegend 317410)により、氷上で20分間染色した。次いで、細胞を洗浄し、分析のためにフローサイトメトリー緩衝液(BD FACSCelesta)に再懸濁した。細胞を、前方散乱及び側方散乱、ならびにCD4発現またはCD8発現でゲーティングした。CD4またはCD8陽性染色及び低または陰性CFSEシグナルによって示されるように、増殖したT細胞のパーセントを、T細胞集団全体ならびにCD4及びCD8サブセットについて計算した。FlowJoを使用してフローサイトメトリーデータを分析し、GraphPad Prism 7においてプロットした。
5~6週齢の雄免疫不全CIEA-NOGマウス(Taconic)に対し、右下側腹部に1,000万個の22Rv1細胞を皮下移植し、腫瘍移植の1日後に尾静脈注射により1,000万個のヒトPBMCを加えた。この動物に対し、腫瘍移植の1日後に尾静脈注射により開始して、1、5、9、及び13日目に100μgの多重特異性抗体またはビヒクルを処置した。キャリパーを使用して腫瘍体積を定量化し、25日間記録した。
CD69は、刺激により上方制御されるT細胞上の細胞表面マーカーであり、それによってT細胞活性化の指標として機能する。本実験では、CD69の活性化を3つの異なる条件下で評価した:1)BCMAコーティングなしの全末梢血単核球(PBMC);2)BCMAコーティングした汎T細胞;及び3)BCMAコーティングなしの汎T細胞。Ficoll(密度1.077g/ml)を使用してバフィーコートからPBMCを分離し、凍結保存したPBMCを解凍し、10%FBSを添加したRPMI1640中、2×106細胞/mLで37℃にて24時間静置した。2日目に、Miltenyiネガティブセレクションキットを使用して休止PBMCから汎T細胞を分離し、分離した細胞を、第2及び第3のアッセイ条件で使用した。第1のアッセイ条件では、PBMCをカウントし、アッセイプレートに播種した。
活性化された初代T細胞のリダイレクションを通じて、3つの異なるBCMA+腫瘍細胞及び1つのBCMA陰性細胞株を殺傷する能力について、抗CD3×抗BCMA二重特異性抗体をアッセイした。本実験では、二重特異性抗体の添加と共に、腫瘍細胞と活性化汎T細胞を10:1のE:T比で混合した。結果を図21のパネルA~Dに示す。パネルAは、RPMI-8226細胞の殺傷を示し、パネルBは、NCI-H929細胞の殺傷を示し、パネルCは、U-266細胞の殺傷を示し、パネルDは、陰性対照であるK562細胞の殺傷を示す。x軸は、使用した抗体の濃度を示し、y軸は、抗体添加6時間後の腫瘍細胞の溶解率(%)を示す。
Claims (28)
- (i)配列番号49のアミノ酸配列を含む第1のポリペプチドサブユニット;
(ii)配列番号56のアミノ酸配列を含む第2のポリペプチドサブユニット;及び
(iii)配列番号58のアミノ酸配列を含む、ヒトBCMAに結合する第3のポリペプチドサブユニット
を含み、第1のポリペプチドサブユニットと第2のポリペプチドサブユニットとが一緒になって、ヒトCD3に結合する第1の結合部分を形成する、ヒトCD3及びヒトBCMAに結合する、二重特異性モノクローナル抗体。 - 第1のポリペプチドサブユニットが軽鎖を含む、請求項1に記載の二重特異性モノクローナル抗体。
- 第2のポリペプチドサブユニットが重鎖を含む、請求項1に記載の二重特異性モノクローナル抗体。
- 第3のポリペプチドサブユニットが2価の重鎖を含む、請求項1に記載の二重特異性モノクローナル抗体。
- 2価の重鎖が、2価の構成において重鎖のみの可変領域を含む、請求項4に記載の二重特異性モノクローナル抗体。
- 2価の重鎖がCH1ドメインを欠く、請求項4に記載の二重特異性モノクローナル抗体。
- (i)配列番号49のアミノ酸配列を含む第1のポリペプチドサブユニット;
(ii)配列番号75のアミノ酸配列を含む第2のポリペプチドサブユニット;及び
(iii)配列番号76のアミノ酸配列を含む、ヒトBCMAに結合する第3のポリペプチドサブユニット
を含み、第1のポリペプチドサブユニットと第2のポリペプチドサブユニットとが一緒になって、ヒトCD3に結合する第1の結合部分を形成する、ヒトCD3及びヒトBCMAに結合する、二重特異性モノクローナル抗体。 - 第1のポリペプチドサブユニットが軽鎖を含む、請求項7に記載の二重特異性モノクローナル抗体。
- 第2のポリペプチドサブユニットが重鎖を含む、請求項7に記載の二重特異性モノクローナル抗体。
- 第3のポリペプチドサブユニットが2価の重鎖を含む、請求項7に記載の二重特異性モノクローナル抗体。
- 2価の重鎖が、2価の構成において重鎖のみの可変領域を含む、請求項10に記載の二重特異性モノクローナル抗体。
- 2価の重鎖がCH1ドメインを欠く、請求項10に記載の二重特異性モノクローナル抗体。
- (i)ヒトCD3に結合する第1の結合アーム;及び
(ii)ヒトBCMAに結合する第2の結合アーム
を含み、
第1の結合アームが配列番号56のアミノ酸配列を含む第1の重鎖及び配列番号49のアミノ酸配列を含む軽鎖を含み、且つ
第2の結合アームが配列番号58のアミノ酸配列を含む2価の第2の重鎖を含む、
ヒトモノクローナルIgG4二重特異性抗体。 - 第2の結合アームが軽鎖を含まない、請求項13に記載のヒトモノクローナルIgG4二重特異性抗体。
- 2価の第2の重鎖が2価の構成において重鎖のみの可変領域を含む、請求項13に記載のヒトモノクローナルIgG4二重特異性抗体。
- 2価の第2の重鎖がCH1ドメインを欠く、請求項13に記載のヒトモノクローナルIgG4二重特異性抗体。
- (i)ヒトCD3に結合する第1の結合アーム;及び
(ii)ヒトBCMAに結合する第2の結合アーム
を含み、
第1の結合アームが配列番号75のアミノ酸配列を含む第1の重鎖及び配列番号49のアミノ酸配列を含む軽鎖を含み、且つ
第2の結合アームが配列番号76のアミノ酸配列を含む2価の第2の重鎖を含む、
ヒトモノクローナルIgG4二重特異性抗体。 - 第2の結合アームが軽鎖を含まない、請求項17に記載のヒトモノクローナルIgG4二重特異性抗体。
- 2価の第2の重鎖が2価の構成において重鎖のみの可変領域を含む、請求項17に記載のヒトモノクローナルIgG4二重特異性抗体。
- 2価の第2の重鎖がCH1ドメインを欠く、請求項17に記載のヒトモノクローナルIgG4二重特異性抗体。
- 請求項1~20のいずれか一項に記載の二重特異性抗体及び薬学的に許容可能な担体を含む、医薬組成物。
- 請求項1~20のいずれか一項に記載の二重特異性抗体をコードするポリヌクレオチド。
- 請求項22に記載のポリヌクレオチドを含むベクター。
- 請求項23に記載のベクターを含む細胞。
- 二重特異性抗体の発現を許容する条件下で請求項24に記載の細胞を増殖させること、及び細胞から二重特異性抗体を単離することを含む、二重特異性抗体を製造するための方法。
- 請求項1~20のいずれか一項に記載の二重特異性抗体及び使用説明書を含むキット。
- 治療を必要とするヒト対象におけるBCMA発現がんの治療のための、請求項1~20のいずれか一項に記載の二重特異性抗体の治療有効量を含む、医薬。
- 治療を必要とするヒト対象におけるBCMA発現がんの治療のための医薬の製造における、請求項1~20のいずれか一項に記載の二重特異性抗体の使用。
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WO2020062155A1 (en) | 2018-09-29 | 2020-04-02 | Mab-Legend Biotech Co., Ltd. | Dual targeting antigen binding molecule |
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CN115894703A (zh) | 2023-04-04 |
CA3176792A1 (en) | 2021-11-04 |
PE20230431A1 (es) | 2023-03-08 |
IL297601A (en) | 2022-12-01 |
MX2022013453A (es) | 2022-11-16 |
CA3176792C (en) | 2024-06-18 |
JP2023081303A (ja) | 2023-06-09 |
CN115715220A (zh) | 2023-02-24 |
EP4186564A1 (en) | 2023-05-31 |
AU2022259766A1 (en) | 2022-12-01 |
US20220089729A1 (en) | 2022-03-24 |
US20220332820A1 (en) | 2022-10-20 |
US11186639B2 (en) | 2021-11-30 |
DOP2022000229A (es) | 2023-02-15 |
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