JP2012522493A - 完全長抗体と単鎖Fabフラグメントとを含む多重特異的抗体 - Google Patents
完全長抗体と単鎖Fabフラグメントとを含む多重特異的抗体 Download PDFInfo
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Abstract
Description
最近、例えばIgG抗体フォーマットと単鎖ドメインとの融合による4価の二重特異的抗体などの、多種多様な多重特異的組換え抗体フォーマットが開発されている(例えば、Coloma, M.J., et al., Nature Biotech 15 (1997) 159-163; WO 2001/077342;およびMorrison, S.L., Nature Biotech 25 (2007) 1233-1234を参照されたい)。
本発明の第1の局面は、
a)第1抗原に特異的に結合し、そして2つの抗体重鎖および2つの抗体軽鎖からなる、完全長の抗体;並びに
b)1〜4つのさらなる抗原に特異的に結合する(好ましくは1つのさらなる抗原に特異的に結合する)1つ以上の単鎖Fabフラグメント
(ここで、b)の下の前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖または軽鎖のC末端またはN末端においてペプチドコネクターを介してa)の下の前記の完全長抗体に融合している)
を含む、多重特異的抗体である。
a)第1抗原に特異的に結合し、そして2つの抗体重鎖および2つの抗体軽鎖からなる、完全長の抗体;並びに
b)1〜4つのさらなる抗原に特異的に結合する(好ましくは1つのさらなる抗原に特異的に結合する)1〜4つの単鎖Fabフラグメント
(ここで、b)の下の前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖または軽鎖のC末端またはN末端においてペプチドコネクターを介してa)の下の前記の完全長抗体に融合している)
を含む、多重特異的抗体である。
本発明の第1の局面は、
a)第1抗原に特異的に結合し、そして2つの抗体重鎖および2つの抗体軽鎖からなる、完全長抗体;並びに
b)1〜4つのさらなる抗原に特異的に結合する(好ましくは1つのさらなる抗原に特異的に結合する)1つ以上の単鎖Fabフラグメント
(ここで、b)の下の前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖または軽鎖のC末端またはN末端においてペプチドコネクターを介してa)の下の前記の完全長抗体に融合している)
を含む、多重特異的抗体である。
a)第1抗原に特異的に結合し、そして2つの抗体重鎖および2つの抗体軽鎖からなる、完全長抗体;並びに
b)1〜4つのさらなる抗原に特異的に結合する(好ましくは1つのさらなる抗原に特異的に結合する)1〜4つの単鎖Fabフラグメント
(ここで、b)の下の前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖または軽鎖のC末端またはN末端においてペプチドコネクターを介してa)の下の前記の完全長抗体に融合している)
を含む、多重特異的抗体である。
a)VH−CH1−リンカー−VL−CL、またはb)VL−CL−リンカー−VH−CH1、より好ましくはVL−CL−リンカー−VH−CH1。
a)VH−CL−リンカー−VL−CH1またはb)VL−CH1−リンカー−VH−CL。
i)重鎖可変ドメイン44位から軽鎖可変ドメイン100位、
ii)重鎖可変ドメイン105位から軽鎖可変ドメイン43位、または
iii)重鎖可変ドメイン101位から軽鎖可変ドメイン100位(ナンバリングは常にKabatのEUインデックスによる)。
a)第1抗原に特異的に結合し、そして
aa)N末端からC末端の方向に、抗体重鎖可変ドメイン(VH)、抗体重鎖定常ドメイン1(CH1)、抗体ヒンジ領域(HR)、抗体重鎖定常ドメイン2(CH2)、および抗体重鎖定常ドメイン3(CH3)からなる、2つの同一の抗体重鎖;および
ab)N末端からC末端の方向に、抗体軽鎖可変ドメイン(VL)および抗体軽鎖定常ドメイン(CL)(CL−CL)からなる、2つの同一な抗体軽鎖
からなる、完全長抗体;並びに
b)1〜4つのさらなる抗原に特異的に結合する(好ましくは1つのさらなる抗原に特異的に結合する)1〜4つの単鎖Fabフラグメント
(ここで、単鎖Fabフラグメントは、抗体重鎖可変ドメイン(VH)および抗体定常ドメイン1(CH1)、抗体軽鎖可変ドメイン(VL)、抗体軽鎖定常ドメイン(CL)およびリンカーからなり、そして前記抗体ドメインおよび前記リンカーは、N末端からC末端の方向に以下の順序の1つを有する:
ba)VH−CH1−リンカー−VL−CL、bb)VL−CL−リンカー−VH−CH1、bc)VH−CL−リンカー−VL−CH1、またはbd)VL−CH1−リンカー−VH−CL(ここで、前記リンカーは、少なくとも30アミノ酸、好ましくは32〜50アミノ酸のペプチドである))
(ここで、b)の下の前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖または軽鎖のC末端またはN末端においてペプチドコネクターを介してa)の下の前記の完全長抗体に融合し、
前記ペプチドコネクターは少なくとも5アミノ酸、好ましくは10〜50アミノ酸のペプチドである)
を含む多重特異的抗体である。
i)前記の完全長抗体が、IGF1Rに特異的に結合し、そして重鎖可変ドメイン中に配列番号1のCDR3領域、配列番号2のCDR2領域、および配列番号3のCDR1領域、そして軽鎖可変ドメイン中に配列番号4のCDR3領域、配列番号5のCDR2領域、および配列番号6のCDR1領域を含み;そして
ii)前記の単鎖FabフラグメントがEGFRに特異的に結合し、そして重鎖可変ドメイン中に配列番号9のCDR3領域、配列番号10のCDR2領域、および配列番号11のCDR1領域、そして軽鎖可変ドメイン中に配列番号12のCDR3領域、配列番号13のCDR2領域、および配列番号14のCDR1領域を含む
ことを特徴とする。
i)前記の完全長抗体が、IGF−1Rに特異的に結合し、そして重鎖可変ドメインとして配列番号7、および軽鎖可変ドメインとして配列番号8を含み、そして
ii)前記の単鎖FabフラグメントがEGFRに特異的に結合し、そして重鎖可変ドメインとして配列番号15、および軽鎖可変ドメインとして配列番号16を含む
ことを特徴とする。
i)前記の完全長抗体が、EGFRに特異的に結合し、そして重鎖可変ドメイン中に配列番号9のCDR3領域、配列番号10のCDR2領域、および配列番号11のCDR1領域、そして軽鎖可変ドメイン中に配列番号12のCDR3領域、配列番号13のCDR2領域、および配列番号14のCDR1領域を含み;そして
ii)前記の単鎖FabフラグメントがIGF−1Rに特異的に結合し、そして重鎖可変ドメイン中に配列番号1のCDR3領域、配列番号2のCDR2領域、および配列番号3のCDR1領域、そして軽鎖可変ドメイン中に配列番号4のCDR3領域、配列番号5のCDR2領域、および配列番号6のCDR1領域を含む
ことを特徴とする。
i)前記の完全長抗体が、EGFRに特異的に結合し、そして重鎖可変ドメインとして配列番号15、および軽鎖可変ドメインとして配列番号16を含み、そして
ii)前記の単鎖FabフラグメントがIGF1Rに特異的に結合し、そして重鎖可変ドメインとして配列番号7、および軽鎖可変ドメインとして配列番号8を含む
ことを特徴とする。
a)2つの同一な抗体重鎖VH−CH1−HR−CH2−CH3および2つの同一な抗体軽鎖VL−CLからなる、第1抗原に結合する、完全長抗体;並びに
b)1〜4つのさらなる抗原に結合する、1〜4つの単鎖Fabフラグメントba)VH−CH1−リンカー−VL−CLまたはbb)VL−CL−リンカー−VH−CH1
を含み、前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖および軽鎖のC末端またはN末端においてペプチドコネクターを介して前記の完全長抗体に連結されている。
一方の重鎖のCH3ドメインおよび他方の重鎖のCH3ドメインが各々、抗体CH3ドメイン間の元の界面を含む界面で接触し;
前記界面は、2価の二重特異的抗体の形成を促進するように改変されており、前記改変は、
a)一方の重鎖のCH3ドメインが、
2価の二重特異的抗体内の一方の重鎖のCH3ドメインの元の界面に接触する他方の重鎖のCH3ドメインの元の界面内において、
アミノ酸残基が、より大きな側鎖体積を有するアミノ酸残基で置換され、それにより、一方の重鎖のCH3ドメインの界面内の空洞に位置することのできる他方の重鎖のCH3ドメインの界面内の隆起を生成するように、改変され、
b)他方の重鎖のCH3ドメインが、
3価の二重特異的抗体内の第1のCH3ドメインの元の界面に接触する第2のCH3ドメインの元の界面内において、
アミノ酸残基が、より小さな側鎖体積を有するアミノ酸残基で置換され、それにより、第2のCH3ドメインの界面内に空洞が生成され、その中に第1のCH3ドメインの界面内の隆起が位置することができるように、改変されることを特徴とする。
配列番号1 重鎖CDR3、<IGF−1R>HUMAB−クローン18
配列番号2 重鎖CDR2、<IGF−1R>HUMAB−クローン18
配列番号3 重鎖CDR1、<IGF−1R>HUMAB−クローン18
配列番号4 軽鎖CDR3、<IGF−1R>HUMAB−クローン18
配列番号5 軽鎖CDR2、<IGF−1R>HUMAB−クローン18
配列番号6 軽鎖CDR1、<IGF−1R>HUMAB−クローン18
配列番号7 重鎖可変ドメイン、<IGF−1R>HUMAB−クローン18
配列番号8 軽鎖可変ドメイン、<IGF−1R>HUMAB−クローン18
配列番号9 重鎖CDR3、ヒト化<EGFR>ICR62
配列番号10 重鎖CDR2、ヒト化<EGFR>ICR62
配列番号11 重鎖CDR1、ヒト化<EGFR>ICR62
配列番号12 軽鎖CDR3、ヒト化<EGFR>ICR62
配列番号13 軽鎖CDR2、ヒト化<EGFR>ICR62
配列番号14 軽鎖CDR1、ヒト化<EGFR>ICR62
配列番号15 重鎖可変ドメイン、ヒト化<EGFR>ICR62−I−HHD
配列番号16 軽鎖可変ドメイン、ヒト化<EGFR>ICR62−I−KC
配列番号17 IgG1由来のヒト重鎖定常領域
配列番号18 IgG4由来のヒト重鎖定常領域
配列番号19 κ軽鎖定常領域
実施例
材料および一般的な方法
ヒト免疫グロブリン軽鎖および重鎖のヌクレオチド配列に関する一般的な情報は、Kabat, E.A., et al., Sequences of Proteins of Immunological Interest, 5th ed., Public Health Service, National Institutes of Health, Bethesda, MD (1991)に示される。抗体鎖のアミノ酸には番号が付けられ、EUナンバリングに従って言及される(Edelman, G.M., et al., Proc. Natl. Acad. Sci. USA 63 (1969) 78-85; Kabat, E.A., et al., Sequences of Proteins of Immunological Interest, 5th ed., Public Health Service, National Institutes of Health, Bethesda, MD, (1991))。
標準的な方法を使用して、Sambrook, J., et al., Molecular cloning: A laboratory manual; Cold Spring Harbor Laboratory Press, Cold Spring Harbor, New York, 1989に記載のようにDNAを操作した。分子生物試薬を、製造業者の指示に従って使用した。
所望の遺伝子セグメントを、化学合成によって製造されたオリゴヌクレオチドから調製した。特異な制限エンドヌクレアーゼ切断部位によってフランキングされる600〜1800bp長の遺伝子セグメントを、オリゴヌクレオチドのアニーリングおよびライゲーション(PCR増幅を含む)によって会合させ、その後、例えばBamHI/BstEII、BamHI/BsiWI、BstEII/NotIまたはBsiWI/NotIなどの指定された制限酵素部位を介して、pUCクローニングベクターに基づいたpcDNA3.1/Zeo(+)(Invitrogen)にクローニングした。サブクローニングされた遺伝子フラグメントのDNA配列をDNAシークエンスによって確認した。遺伝子合成フラグメントを、Geneart (Regensburg, Germany)の所与の明細に従って順番に並べた。
DNA配列を、Sequiserve GmbH (Vaterstetten, Germany)において実施された二本鎖シークエンスによって決定した。
GCG(Genetics Computer Group, Madison, Wisconsin)のソフトウェアパッケージバージョン10.2およびInvitrogensベクターNT1アドバンススイートバージョン9.1を、配列の作製、マッピング、分析、アノテーションおよび説明のために使用した。
Current Protocols in Cell Biology (2000), Bonifacino, J.S., Dasso, M., Harford, J.B., Lippincott-Schwartz, J., and Yamada, K.M., (eds.), John Wiley & Sons, Inc.に記載のような標準的な細胞培養技術を使用した。
多重特異的抗体を、FreeStyle(登録商標)293発現系を使用して製造業者の指示(Invitrogen, USA)に従ってヒト胚腎臓293F細胞の一過性トランスフェクションによって発現させた。簡潔に言うと、FreeStyle(登録商標)293F細胞懸濁液を、37℃/8%CO2でFreeStyle(登録商標)293発現培地中で培養し、そして細胞をトランスフェクションの日に1〜2×106個の生細胞/mlの密度で新鮮な培地に播種した。DNA−293fectin(登録商標)複合体を、250mlの最終トランスフェクション容量に対して333μlの293fectin(登録商標)(Invitrogen, Germany)および1:1のモル比の250μgの重鎖および軽鎖プラスミドDNAを使用して、Opti-MEM(登録商標)培地(Invitrogen, USA)中で調製した。二重特異的抗体を含む細胞培養上清を、トランスフェクションから7日後に、14000gで30分間の遠心分離および滅菌フィルター(0.22μm)を通してのろ過によって清澄化した。上清を精製まで−20℃で保存した。
精製した抗体および誘導体のタンパク質濃度を、Pace, C.N., et. al., Protein Science, 4 (1995) 2411-2423によるアミノ酸配列に基づいて計算したモル吸光係数を使用して、バックグラウンド修正として320nmにおけるODを用いて、280nmにおける吸光度(OD)を決定することによって決定した。
細胞培養上清中の抗体および誘導体の濃度を、アフィニティHPLCクロマトグラフィーによって測定した。簡潔に言うと、プロテインAに結合する抗体および誘導体を含む細胞培養上清を、200mM KH2PO4、100mMクエン酸ナトリウム(pH7.4)中のApplied Biosystems Poros A/20カラムにアプライし、そしてUltiMate 3000 HPLCシステム(Dionex)で200mM NaCl、100mMクエン酸(pH2.5)を用いてマトリックスから溶出させた。溶出されたタンパク質を、UV吸光度およびピーク面積の積分によって定量した。精製された標準IgG1抗体は標準としての役目を果たした。
分泌された抗体を、上清から、2工程で、プロテインAセファロース(登録商標)(GE Healthcare, Sweden)を使用したアフィニティクロマトグラフィー、およびSuperdex200サイズ排除クロマトグラフィーによって精製した。簡潔に言うと、二重特異的および三重特異的抗体を含む清澄化された培養上清を、PBS緩衝液(10mM Na2HPO4、1mM KH2PO4、137mM NaClおよび2.7mM KCl、pH7.4)を用いて平衡化されたHiTrapプロテインA HP(5ml)カラムにアプライした。非結合タンパク質を平衡緩衝液を用いて洗浄除去した。二重特異的抗体を、0.1Mクエン酸緩衝液(pH2.8)を用いて溶出し、そしてタンパク質を含む画分を、0.1mlの1Mトリス(pH8.5)を用いて中和した。その後、溶出したタンパク質画分をプールし、3mlの容量となるまでAmicon Ultra遠心式フィルター装置(MWCO:30K、Millipore)を用いて濃縮し、そして20mMヒスチジン、140mM NaCl(pH6.0)を用いて平衡化されたSuperdex200 HiLoad 120 ml 16/60ゲルろ過カラム(GE Healthcare, Sweden)にローディングした。単量体の抗体画分をプールし、瞬時に凍結させ、そして−80℃で保存した。試料の一部を、その後のタンパク質分析および特徴付けのために提供した。
精製されたタンパク質試料のタンパク質濃度を、アミノ酸配列に基づいて計算したモル吸光係数を使用して、280nmにおける吸光度(OD)を測定することによって決定した。二重特異的抗体の純度を、還元剤(5mMの1,4−ジチオトレイトール)の存在下および非存在下におけるSDS−PAGE並びにクーマシーブリリアントブルーを用いての染色によって分析した。NuPAGE(登録商標)Pre-Castゲルシステム(Invitrogen, USA)を製造業者の指示に従って使用した(4〜20%トリス−グリシンゲル)。二重特異的抗体試料の凝集内容物を、UltiMate 3000 HPLCシステム(Dionex)での高速SECによって、25℃の200mM KH2PO4、250mM KCl(pH7.0)のランニング緩衝液中のSuperdex 200分析サイズ排除カラム(GE Healthcare, Sweden)を使用して分析した。25μgのタンパク質を0.5ml/分の流速でカラムに注入し、そして50分間かけて均一濃度で溶出させた。安定性の分析のために、0.1mg/ml、1mg/mlおよび3mg/mlの濃度の精製タンパク質を調製し、そして4℃、37℃で7日間インキュベーションし、その後、高速SECによって評価した。還元された二重特異的抗体の軽鎖および重鎖のアミノ酸骨格の完全性を、ペプチド−N−グリコシダーゼF(Roche Molecular Biochemicals)を用いての酵素的処理によってN−グリカンを除去した後に、ナノエレクトロスプレーQ−TOF質量分析によって確認した。
ヒトIGF−1レセプター並びにヒトEGF−レセプターを認識する分子である本発明による多重特異的抗体の設計
以下に、本発明の1つの態様として、第1の抗原(IGF−1RまたはEGFR)に結合する完全長抗体を、完全長抗体にペプチドコネクターを介して接続された第2の異なる抗原(IGF−1RまたはEGFRのもう一方)に結合する2つの単鎖Fabフラグメント(重鎖の2つのC末端または軽鎖の2つのC末端における両方の単鎖Fabフラグメント)と共に含む、4価の二重特異的な抗体を例示する。前記の単鎖Fabフラグメント中の抗体ドメインおよびリンカーは、N末端からC末端の方向に以下の順序を有する:VL−CL−リンカー−VH−CH1。
二重特異的<EGFR−IGF1R>抗体scFabXGFR1分子の発現および精製
対応する二重特異的抗体の軽鎖および重鎖を、原核細胞および真核細胞選択マーカーを有する発現ベクター中に構築した。これらのプラスミドをE.coliにおいて増幅させ、精製し、そしてその後、HEK293F細胞における組換えタンパク質の一過性発現のためにトランスフェクションした(Invitrogenのfreesyleシステムを使用)。7日後、HEK293細胞上清を収集し、そしてプロテインAおよびサイズ排除クロマトグラフィーによって精製した。全ての二重特異的抗体構築物の均一性を、非還元条件下および還元条件下においてSDS−PAGEによって確認した。還元条件下において(図8)、C末端およびN末端scFab融合体を有するポリペプチド鎖は、SDS−PAGE時に、計算された分子量に類似した見かけの分子サイズを示した。全ての構築物の発現レベルをプロテインA HPLCによって分析し、そして「標準的な」IgGの発現収量に類似していたか、またはいくつかの場合においては幾分低かった。平均タンパク質収量は、このような最適化されていない一過性発現実験において細胞培養上清1リットルあたり1.5〜10mgのタンパク質であった(図4および5)。
二重特異的<EGFR−IGF1R>抗体scFab−XGFR分子の安定性および凝集傾向
HPサイズ排除クロマトグラフィー分析を行ない、組換え抗体誘導体の調製物中に存在する凝集体の量を決定した。そのために、二重特異的抗体試料を、Superdex 200分析用サイズ排除カラム(GE Healthcare, Sweden)を使用して、UltiMate 3000 HPLCシステム(Dionex)での高速SECによって分析した。図9は、これらの分析の一例を示す。凝集体は、単量体の抗体誘導体を含む画分の前に別々のピークまたはショルダーとして出現する。この研究のために、本発明者らは、所望の「単量体」分子を、両方のいずれかに接続されたscFabを有する、重鎖および軽鎖の2つのヘテロ二量体からなると定義する。還元された二重特異的抗体の軽鎖および重鎖のアミノ酸骨格の完全性並びに融合タンパク質を、ペプチド−N−グリコシダーゼF(Roche Molecular Biochemicals)を用いての酵素的処理によってN−グリカンを除去した後に、ナノエレクトロスプレーQ−TOF質量分析によって確認した。
RTKであるEGFRおよびIGF1Rへの二重特異的<EGFR−IGF1R>抗体scFab分子の結合
種々の二重特異的抗体フォーマットscFab−XGFRのscFabモジュールの結合と、保持された完全長のIgGモジュールの抗原結合部位の結合とを、結合モジュールおよび二重特異的抗体の由来する「野生型」IgGの結合と比較した。これらの分析を、表面プラズモン共鳴(Biacore)並びに細胞ELISAを適用することによって行なった。
二重特異的<EGFR−IGF−1R>抗体scFab−XGFR分子による、EGFR並びにIGF−1Rのダウンレギュレーション
ヒト抗IGF−1R抗体<IGF−1R>HUMABクローン18(DSM ACC 2587)は、IGFR1シグナル伝達を阻害し、そしてヒト化ラット抗EGFR抗体<EGFR>ICR62はEGFRによるシグナル伝達を阻害する。種々のscFab−XGFR1変異体の可能性ある阻害活性を評価するために、両方のレセプターのダウンレギュレーション度を分析した。
96ウェルマイクロタイタープレート(MTP)をプロトコール(ヒトEGFRのためのDuoSet ELISA、RnD systems、製造番号DY231)に従って調製した。PBS中144μg/mlのヒトEGFRヤギ抗体をPBS中で1:180に希釈し、そして100μl/ウェルをMTPに加えた。MTPを室温で撹拌しながら一晩インキュベーションした。プレートを、3回、0.1%Tween(登録商標)20の補充されたPBSで洗浄し、そして300μl/ウェルのPBS、3%BSAおよび0.1%Tween(登録商標)20溶液を用いて1時間かけて室温(RT)で撹拌しながら遮断した。プレートを、3回、0.1%Tween(登録商標)20の補充されたPBSで洗浄した。
ストレプトアビジン−MTP(Roche ID番号: 11965891001)を、PBS、3%BSAおよび0.2%Tween(登録商標)20中で1:200に希釈したAK1aビオチニル化抗体(Genmab, Denmark)を1ウェルあたり100μl加えることによって調製した。ストレプトアビジン−MTPを1時間室温で撹拌しながらインキュベーションし、その後、3回、1ウェルあたり、0.1%Tween(登録商標)20溶液を含む200μlのPBSで洗浄した。
in vitroにおけるscFab−XGFR1およびscFab−XGFR2により媒介される腫瘍細胞株の増殖阻害
ヒト抗IGF−1R抗体<IGF−1R>HUMABクローン18(DSM ACC 2587)は、IGF1Rを発現する腫瘍細胞株の増殖を阻害する(WO 2005/005635)。同じように、ヒト化ラット抗EGFR抗体<EGFR>ICR62は、EGFRを発現する腫瘍細胞株の増殖を阻害することが示された(WO 2006/082515)。腫瘍細胞株の増殖アッセイにおいて種々のscFab−XGFR1変異体の可能性ある阻害活性を評価するために、EGFR並びにIGF1Rを発現するH322M細胞における阻害度を分析した。
Claims (8)
- a)第1抗原に特異的に結合し、そして2つの抗体重鎖および2つの抗体軽鎖からなる、完全長の抗体;並びに
b)1つ以上のさらなる抗原に結合する1つ以上の単鎖Fabフラグメント
ここで、b)での前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖または軽鎖のC末端またはN末端においてペプチドコネクターを介してa)での前記の完全長抗体に融合している、
を含む、多重特異的抗体。 - a)第1抗原に特異的に結合し、そして2つの抗体重鎖および2つの抗体軽鎖からなる、完全長の抗体;並びに
b)1〜4つのさらなる抗原に結合する1〜4つの単鎖Fabフラグメント
ここで、b)での前記の単鎖Fabフラグメントは、前記の完全長抗体の重鎖または軽鎖のC末端またはN末端においてペプチドコネクターを介してa)での前記の完全長抗体に融合している、
を含む、請求項1記載の多重特異的抗体。 - 第2抗原に結合する1つまたは2つの単鎖Fabフラグメントが、前記の完全長抗体の重鎖のC末端においてペプチドコネクターを介して前記の完全長抗体に融合している、請求項1または2記載の多重特異的抗体。
- 第2抗原に結合する1つの単鎖Fabフラグメントが、前記の完全長抗体の1つの重鎖または1つの軽鎖のC末端においてペプチドコネクターを介して前記の完全長抗体に融合している、請求項1または2記載の多重特異的抗体。
- 第2抗原に結合する、2つの同一な単鎖FabフラグメントVL−CL−リンカー−VH−CH1またはVH−CH1−リンカー−VL−CLが、そのN末端で、前記の完全長抗体の2つの重鎖の2つのC末端または2つの軽鎖の2つのC末端においてペプチドコネクターを介して前記の完全長抗体に融合している、請求項1または2記載の多重特異的抗体。
- 第2抗原に結合する、2つの同一な単鎖FabフラグメントVL−CL−リンカー−VH−CH1またはVH−CH1−リンカー−VL−CLが、そのC末端で、前記の完全長抗体の2つの重鎖の2つのN末端または2つの軽鎖の2つのN末端においてペプチドコネクターを介して前記の完全長抗体に融合している、請求項1または2記載の多重特異的抗体。
- 請求項1〜6記載の抗体を含む、薬学的組成物。
- 請求項1〜6記載の多重特異的抗体をコードする、核酸。
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JP2017511152A (ja) * | 2014-03-21 | 2017-04-20 | エックス−ボディ インコーポレイテッド | 二重特異性抗原結合ポリペプチド |
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JP2019532291A (ja) * | 2016-09-30 | 2019-11-07 | エフ.ホフマン−ラ ロシュ アーゲーF. Hoffmann−La Roche Aktiengesellschaft | 多重特異性分子の機能分析のためのsprに基づく二重結合アッセイ |
JP2021509896A (ja) * | 2018-01-08 | 2021-04-08 | ナンジン レジェンド バイオテック カンパニー,リミテッドNanjing Legend Biotech Co.,Ltd. | 多重特異性抗原結合タンパク質及びその使用方法 |
JP7500619B2 (ja) | 2019-05-30 | 2024-06-17 | アムジエン・インコーポレーテツド | 抗体の二量体化を促進するためのヒンジ領域の操作 |
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CL2011002380A1 (es) | 2012-06-15 |
US9382323B2 (en) | 2016-07-05 |
MX2011010159A (es) | 2011-10-17 |
HK1167669A1 (en) | 2012-12-07 |
RU2598248C2 (ru) | 2016-09-20 |
US20100256338A1 (en) | 2010-10-07 |
IL214756A0 (en) | 2011-11-30 |
BRPI1014089A2 (pt) | 2016-04-19 |
CN102369215B (zh) | 2015-01-21 |
TW201040265A (en) | 2010-11-16 |
EP2414391B1 (en) | 2018-11-28 |
WO2010112193A1 (en) | 2010-10-07 |
SG175004A1 (en) | 2011-11-28 |
EP2414391A1 (en) | 2012-02-08 |
CA2756244A1 (en) | 2010-10-07 |
AR076018A1 (es) | 2011-05-11 |
CN102369215A (zh) | 2012-03-07 |
KR101431318B1 (ko) | 2014-08-20 |
RU2011143905A (ru) | 2013-05-10 |
ZA201106666B (en) | 2012-05-30 |
AU2010230563A1 (en) | 2011-09-22 |
KR20110130525A (ko) | 2011-12-05 |
PE20120591A1 (es) | 2012-05-23 |
JP5501439B2 (ja) | 2014-05-21 |
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