JP2020529839A - Ror1及びcd3に対する二重特異性抗体 - Google Patents
Ror1及びcd3に対する二重特異性抗体 Download PDFInfo
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2803—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
- C07K16/2803—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
- C07K16/2809—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily against the T-cell receptor (TcR)-CD3 complex
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
- C07K2317/24—Immunoglobulins specific features characterized by taxonomic origin containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
- C07K2317/31—Immunoglobulins specific features characterized by aspects of specificity or valency multispecific
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
- C07K2317/33—Crossreactivity, e.g. for species or epitope, or lack of said crossreactivity
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/30—Immunoglobulins specific features characterized by aspects of specificity or valency
- C07K2317/34—Identification of a linear epitope shorter than 20 amino acid residues or of a conformational epitope defined by amino acid residues
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/60—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments
- C07K2317/62—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments comprising only variable region components
- C07K2317/622—Single chain antibody (scFv)
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2317/00—Immunoglobulins specific features
- C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
- C07K2317/73—Inducing cell death, e.g. apoptosis, necrosis or inhibition of cell proliferation
Abstract
Description
T細胞受容体(TCR)のCD3サブユニットに選択的に結合する第2の抗原結合ドメイン
を含む二重特異性抗体分子に関する。
特に断りのない限り、技術用語は、通常の使用に従って使用される。分子生物学の一般的な用語の定義は、Benjamin Lewin, Genes V, published by Oxford University Press, 1994(ISBN 0-19-854287-9)、Kendrew et al.(eds.), The Encyclopedia of Molecular Biology, published by Blackwell Science Ltd., 1994(ISBN 0-632-02182-9)、及びRobert A. Meyers(ed.), Molecular Biology and Biotechnology: a Comprehensive Desk Reference, published by VCH Publishers, Inc., 1995(ISBN 1-56081-569-8)に見出され得る。特に説明していない限り、本明細書で使用される全ての科学技術用語は、本開示が属する技術分野の当業者に一般的に理解される意味と同じ意味を有する。
1) アラニン(A)、セリン(S)、トレオニン(T)、
2) アスパラギン酸(D)、グルタミン酸(E)、
3) アスパラギン(N)、グルタミン(Q)、
4) アルギニン(R)、リジン(K)、
5) イソロイシン(I)、ロイシン(L)、メチオニン(M)、バリン(V)、及び
6) フェニルアラニン(F)、チロシン(Y)、トリプトファン(W)
ROR1及びCD3に特異的に結合する臨床的に有用な抗体を本明細書に開示する。
(a)軽鎖可変ドメインは、配列番号3に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号9に記載のアミノ酸配列を含み、
(b)軽鎖可変ドメインは、配列番号4に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号10に記載のアミノ酸配列を含み、
(c)軽鎖可変ドメインは、配列番号5に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号11に記載のアミノ酸配列を含み、
(d)軽鎖可変ドメインは、配列番号6に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号12に記載のアミノ酸配列を含み、
(e)軽鎖可変ドメインは、配列番号7に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号13に記載のアミノ酸配列を含み、又は
(f)軽鎖可変ドメインは、配列番号8に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号14に記載のアミノ酸配列を含む。
(a)軽鎖可変ドメインは、配列番号3に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号9に記載のアミノ酸配列を含み、
(b)軽鎖可変ドメインは、配列番号4に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号10に記載のアミノ酸配列を含み、
(c)軽鎖可変ドメインは、配列番号5に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号11に記載のアミノ酸配列を含み、
(d)軽鎖可変ドメインは、配列番号6に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号12に記載のアミノ酸配列を含み、
(e)軽鎖可変ドメインは、配列番号7に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号13に記載のアミノ酸配列を含み、又は
(f)軽鎖可変ドメインは、配列番号8に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号14に記載のアミノ酸配列を含む。
(a)軽鎖可変ドメインは、配列番号63に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号69に記載のアミノ酸配列を含み、
(b)軽鎖可変ドメインは、配列番号64に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号70に記載のアミノ酸配列を含み、
(c)軽鎖可変ドメインは、配列番号65に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号71に記載のアミノ酸配列を含み、
(d)軽鎖可変ドメインは、配列番号66に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号72に記載のアミノ酸配列を含み、
(e)軽鎖可変ドメインは、配列番号67に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号73に記載のアミノ酸配列を含み、又は
(f)軽鎖可変ドメインは、配列番号68に記載のアミノ酸配列を含み、かつ重鎖可変ドメインは、配列番号74に記載のアミノ酸配列を含む。
二重特異性抗体をコードするヌクレオチド配列、並びに細胞におけるその効率的な発現を提供する発現ベクターもまた提供される。
対象におけるがんを処置するための方法であって、本開示の抗体、及び/又は抗体をコードする核酸の治療有効量を対象に投与し、それによってがんを処置するステップを含む方法も開示される。
ScFvの生成
ラットを、Aldevron GmBHによって完全長のROR1に対して免疫し、その後のハイブリドーマからのオリゴクローン性クローンを単細胞選別し、可変配列を、標準的な実験プロトコールを使用する5' Reverse Amplification of cDNA endsによって単離した。生産的な配列を抗体にクローニングし、特異的ROR1結合に関して評価した後、重鎖-リンカー-軽鎖フォーマットの一本鎖可変断片に変換した。
PANC-1、SKOV-3、及びHEK293T細胞を、American Type Culture Collection(ATCC; Teddington、Middlesex、United Kingdom)から得た。SUIT-2、CFPAC1、HPAF-II MiaPaCa-2、PSN-1細胞株は、Professor Aldo Scarpa(Department of Pathology and Diagnostics、University and Hospital Trust of Verona、Verona、Italy)から供与された。HEK293T細胞を、10%ウシ胎仔血清(FBS)(ThermoScientific)を補充したイスコフ改変ダルベッコ培地(ThermoScientific、Paisley、UK)において維持した。他の全ての細胞株は、10% FBSを補充したRPMI-1640培地(ThermoScientific)において維持した。細胞は、37℃、5%CO2で培養した。細胞株を、抗ROR1クローン2A2抗体(Biolegend、UK)による染色によってフローサイトメトリーによってROR1発現に関して評価した。
ROR1及び対照CD19 fmc63 ScFvを、gBlocks(Integrated DNA Technologies、Leuven、Belgium)を使用して短いアミノ酸リンカーを通して抗ヒトCD3 ScFv(クローンOKT3)にカップリングさせ、Phusion DNAポリメラーゼ(New England Biolabs、Ipswich、UK)を使用するオーバーラップ伸長PCRを行った。BiTEオープンリーディングフレーム(ORF)を、NcoI/MluI制限消化によって、GFP ORFの上流でSFGレトロウイルスベクターにクローニングした。2つのORFはIRES領域で隔てられ、SFG.ROR1×CD3.IRES.GFP又はSFG.CD19×CD3.IRES.GFPを得た。検出及び精製を可能にするために、N末端ヘキサヒスチジンタグを含めた。
レトロウイルス上清を標準的な実験プロトコールに従って、RD114レトロウイルスエンベロープ(RDF)、PeqPam3 gag-pol、及びSFG.ROR1×CD3.IRES.GFP、又はSFG.CD19×CD3.IRES.GFPベクターを使用してHEK293T細胞において産生した。レトロウイルスを含有する上清を、トランスフェクション後48及び72時間目に回収し、直ちにドライアイス中で凍結し、更に使用するまで-80℃で保存した。HEK293T細胞(1.8×106個)を10cm培養皿において新鮮な培地中に播種し、播種後24及び48時間目にレトロウイルスを含有する上清2mlによって形質導入した。次に、形質導入細胞を、37℃、5%CO2の湿潤インキュベータ内で72時間インキュベートし、GFP発現に基づいて選別し、BiTE産生に関して試験した。
ROR1×CD3又はCD19×CD3を含有するHEK293T培地を収集し、AKTA explorerを備えたHiTrap Talon結合カラム(GE Healthcare Life Sciences、UK)を使用する高速タンパク質液体クロマトグラフィー(FPLC)によって精製した。BiTEの品質をSDS-PAGE後にクーマシー染色によって評価し、BSA希釈標準(ThermoScientific)を使用して定量した。ImageJソフトウェアをデータ解析のために使用した(U. S. National Institutes of Health、Bethesda、Maryland、USA)。ROR1×CD3、及びCD19×CD3を、HRPコンジュゲート抗His抗体(Biolegend、UK)を使用してウェスタンブロットによって検証した。ROR1×CD3又はCD19×CD3の標的細胞に対する特異的結合を、抗Hisタグ抗体(Abcam、Cambridge、UK)を使用してフローサイトメトリーによって評価した。
健康なドナーからの末梢血単核球(PBMC)を、Ficoll-Paque Plus(GE Healthcare Life Sciences、UK)を使用する新鮮な血液の密度勾配遠心分離後に得た。T細胞をヒトPan T細胞単離キット(Miltenyi Biotec、Surrey、United Kingdom)を使用して精製し、単離の品質をフローサイトメトリーによってチェックした。これまでの報告を踏まえて、新たに単離したT細胞を、動物実験のために限って増大させた。T細胞を、24ウェルプレートにおいて1×106個/ウェルで播種し、CD3/CD28ビーズ(ThermoScientific、UK)を使用して増大させ、培養において1週間維持した後、マウスに注射した。非刺激T細胞を、全てのin vitro実験のために使用した。
データをLRS Fortessa IIフローサイトメトリー(Becton Dickinson、Oxford、UK)によって捕捉し、FlowJoソフトウェア(Flowjo LLC、Ashlard、Orgeon)を使用して解析した。蛍光活性化細胞選別は、FACSAria Cell Sorted (Becton Dickinson)において行った。
共培養アッセイは、原稿に報告されるように標的細胞1×104個、T細胞1×104個、及び精製ROR1×CD3 BiTE(又は対照としてのCD19×CD3)を0.1ng/ml〜1μg/mlの濃度で含有する96ウェルプレートにおいて実施した。ROR1×CD3又はCD19×CD3の添加の24時間後に、上清をサイトカイン評価のために収集し、これを製造元の説明書(Biolegend、UK)に従ってELISAによって実施した。細胞傷害性を評価するために、本発明者らは、CellTiter 96(登録商標) AQueous One Solution Cell Proliferation Assay (MTS)を、製造元のプロトコール(Promega、UK)に従って使用した。
統計分析を、Windows用GraphPad Prismバージョン6(GraphPad Software、La Jolla California USA)において行った。p<0.05であれば統計学的有意であり、エラーバーは、標準誤差を表す。
動物実験は全て、United Kingdom Home Office Project and Personal License規則の典拠の下で実施し、University College Londonのガイドラインを遵守した。マウスを、Charles River Laboratories Incから得た。6〜8週齢の雌性Hsd:Athymic Nude-Foxn1nuマウスにPANC-1.Luc細胞2×106個を腹腔内注射によって投与した。3、5、及び8日又は14日後にPANC-1.Lucルシフェラーゼ発現を、200μg/マウスの用量で腹腔内(IP)注射したD-ルシフェリン(Melford Laboratories)を使用して検出し、IVISイメージングシステム100シリーズ(Perkin Elmer)を使用して撮像した。Living Image 4.4ソフトウェアを使用して、生物発光イメージング(BLI)シグナルを定量し、定量のためのROI検出を行ってBLI強度に関して比較した。異種移植片試験の場合、PANC-1細胞5×106個を、6〜8週齢のHsd:Athymic Nude-Foxn1nuマウスの側腹部に注射した。異種移植片が確立された後(最小サイズ100mm3)、マウスにT細胞5×106個を1回の尾静脈注射によって投与した後、PBS又は0.1%BSAのPBS溶液に懸濁したROR1×CD3/CD19×CD3(10μg/kg/マウス)を毎日注射した。腫瘍体積を、楕円式(長さ×幅2)/2を使用して計算した。
ラットハイブリドーマライブラリから単離した抗ROR1抗体のパネルから、本発明者らは、ROR1の膜遠位の免疫グロブリン様ドメイン又はより近位のFrizzledドメインのいずれかに結合した2つのリード候補体を決定した。これらを一本鎖可変断片(scFv)フォーマットに変換した後、短いリンカーによって隔てられたタンデム構造でCD3 scFvとカップリングさせた。このROR1-BiTEにおいて、本発明者らは、検出及び精製を可能にするためにN末端ヘキサヒスチジンタグを含めたが、これは各々のアームがCD3又はROR1に独立して結合する能力を損なわなかった。2つのROR1-BiTEを直接比較すると、Frizzledドメインに対して特異的な膜近位結合BiTEが優れた細胞傷害性を示し、これを更なる評価のために選択した(ROR1×CD3)。
エピトープマッピング
生成した抗体のエピトープを評価するために、本発明者らは、切断型ROR1を有する細胞株を産生した。これらは、完全長のROR1(免疫グロブリンドメイン、Frizzledドメイン、及びクリングルドメイン)を発現するSUPT1細胞、免疫グロブリンのみのSupT1、FrizzledのみのSupT1、KringleのみのSupT1、及び組合せ(Ig及びFrizzled SupT1、並びにFrizzled及びKringle SupT1)を含んだ。これにより、クローンFがFrizzledドメインに結合することが証明された。これは、免疫グロブリンドメインに結合する先行技術の抗体R12及び4A5とは異なる。したがって、クローンFは、先行技術の抗体R12及び4A5と比較して異なる別個の結合特性を示す。
クローンFは、配列相同性のために、生成された他の抗体(マウス及びウサギ)に対してユニークである
ヒト、マウス、ウサギ、及びラットROR1タンパク質配列を、Uniprot webに基づくソフトウェア(http://www.uniprot.org/align/)を使用して整列させ、異なる種の間の変動を強調した。Uniprot受託番号:ヒト(Q01973)、マウス(Q9Z139)、及びウサギ(G1U5L1)。ラットROR1の場合、対応するUniprot配列が部分的にのみ完全であったために、NCBI基準配列NP_001102141.1を使用した。
クローンF BiTEは、ROR1陽性神経芽腫細胞株の有意な細胞傷害性をもたらす。
クローンF ROR1 BITEは、ROR1陽性NB-1643、及びNB-7神経芽腫細胞株の有意な細胞傷害性をもたらすが、Rh30 ROR1陰性細胞株では0.01マイクログラム/mlの濃度でも細胞傷害性をもたらさない(図3を参照されたい)。
クローンFのヒト化は、非ヒト化比較対照構築物と比較して利点を付与する
CD19ではなくてROR1を標的化する根拠の1つは、正常なROR1陰性B細胞集団の残存である。しかし、同時に、正常なCD19+ B細胞が絶えず存在することにより、ラット由来scFvに対する免疫応答が可能となる。これは、マウスscFvに関して認められており、mRNA改変メソテリンCAR T細胞によるアナフィラキシー(Maus et al., 2013)、又はα葉酸受容体又は炭酸脱水酵素IX特異的CAT T細胞による抗体応答(Lamers et al., 2006、Kershaw et al., 2006)を含む臨床的に重要な結果をもたらした。T細胞媒介免疫応答はまた、MHCにおけるCARの構成要素の交差提示によっても可能である。比較としてのCD19 CAR T細胞は正常なB細胞集団を撲滅することによって、抗体に基づく免疫応答のリスクを本質的に中和し、B細胞の再発はより高い再燃リスクに関連する。
以下に記載のアミノ酸配列は、アミノ酸の標準的な1文字表記を使用して示す。配列は、クローンF及び作製した5個のヒト化可変配列である。
Claims (32)
- 受容体チロシンキナーゼ様オーファン受容体1(ROR1)に選択的に結合する第1の抗原結合ドメインであって、アミノ酸Gln-261を含むROR1のエピトープに結合する第1の抗原結合ドメイン、及び
T細胞受容体(TCR)のCD3サブユニットに選択的に結合する第2の抗原結合ドメイン
を含む二重特異性抗体分子。 - 第1の抗原結合ドメインが、軽鎖可変ドメイン及び重鎖可変ドメインを含み、軽鎖可変ドメインが、軽鎖相補性決定領域(LCDR)1、LCDR2、及びLCDR3を含み、LCDR1が、配列番号16に記載のアミノ酸配列を含み、LCDR2が、配列番号18に記載のアミノ酸配列を含み、かつLCDR3が、配列番号20に記載のアミノ酸配列を含み、並びに重鎖可変ドメインが、重鎖相補性決定領域(HCDR)1、HCDR2、及びHCDR3を含み、HCDR1が、配列番号23に記載のアミノ酸配列を含み、HCDR2が、配列番号25に記載のアミノ酸配列を含み、かつHCDR3が、配列番号57に記載のアミノ酸配列を含み、各々の相補性決定領域の配列が最大2つのアミノ酸位置で所与の配列と異なっていてもよい、請求項1に記載の抗体分子。
- 各々のCDRの配列が、1つのアミノ酸位置で所与の配列と異なっていてもよい、請求項2に記載の抗体分子。
- LCDR1が、配列番号16に記載のアミノ酸配列を含み、LCDR2が、配列番号18に記載のアミノ酸配列を含み、かつLCDR3が、配列番号20に記載のアミノ酸配列を含み、並びにHCDR1が、配列番号23に記載のアミノ酸配列を含み、HCDR2が、配列番号25に記載のアミノ酸配列を含み、かつHCDR3が、配列番号57に記載のアミノ酸配列を含む、請求項1〜3のいずれか一項に記載の抗体分子。
- HCDR3が、配列番号27、36、44、及び49に記載の配列のいずれかから選択されるアミノ酸配列を含む、請求項1〜4のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインが、配列番号15、29、50、及び53のうちの1つに記載のアミノ酸配列を含む軽鎖フレームワーク領域(LCFR)1、配列番号17、30、38、及び46のうちの1つに記載のアミノ酸配列を含むLCFR2、配列番号19、31、39、47、及び54のうちの1つに記載のアミノ酸配列を含むLCFR3、並びに配列番号21、32、及び40のうちの1つに記載のアミノ酸配列を含むLCFR4を含む軽鎖可変ドメインを有し、各々のフレームワーク領域の配列が最大5個のアミノ酸位置で所与の配列と異なっていてもよい、請求項1〜5のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインが、配列番号29、50、及び53のうちの1つに記載のアミノ酸配列を含むLCFR1、配列番号30、38、及び46のうちの1つに記載のアミノ酸配列を含むLCFR2、配列番号31、39、47、及び54のうちの1つに記載のアミノ酸配列を含むLCFR3、並びに配列番号32及び40のうちの1つに記載のアミノ酸配列を含むLCFR4を含む軽鎖可変ドメインを有し、各々のフレームワーク領域の配列が、最大5個のアミノ酸位置で所与の配列と異なっていてもよい、請求項1〜6のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインが、配列番号22、33、41、及び55のうちの1つに記載のアミノ酸配列を含む重鎖フレームワーク領域(HCFR)1、配列番号24、34、42、及び51のうちの1つに記載のアミノ酸配列を含むHCFR2、配列番号26、35、43、48、52、及び56のうちの1つに記載のアミノ酸配列を含むHCFR3、並びに配列番号28、37、及び45のうちの1つに記載のアミノ酸配列を含むHCFR4を含む重鎖可変ドメインを有し、各々のフレームワーク領域の配列が、最大5個のアミノ酸位置で所与の配列と異なっていてもよい、請求項1〜7のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインが、配列番号33、41、及び55のうちの1つに記載のアミノ酸配列を含むHCFR1、配列番号34、42、及び51のうちの1つに記載のアミノ酸配列を含むHCFR2、配列番号35、43、48、52、及び56のうちの1つに記載のアミノ酸配列を含むHCFR3、並びに配列番号37及び45のうちの1つに記載のアミノ酸配列を含むHCFR4を含む重鎖可変ドメインを有し、各々のフレームワーク領域の配列が、最大5個のアミノ酸位置で所与の配列と異なっていてもよい、請求項1〜8のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインの軽鎖可変ドメインが、配列番号3、4、5、6、7、及び8のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含む、請求項1〜9のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインの軽鎖可変ドメインが、配列番号4、5、6、7、及び8のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含む、請求項1〜10のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインの重鎖可変ドメインが、配列番号9、10、11、12、13、及び14のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含む、請求項1〜11のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインの重鎖可変ドメインが、配列番号10、11、12、13、及び14のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含む、請求項1〜12のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインの軽鎖可変ドメインが、配列番号4、5、6、7、及び8のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含み、かつ
第1の抗原結合ドメインの重鎖可変ドメインが、配列番号10、11、12、13、及び14のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含む、請求項1〜13のいずれか一項に記載の抗体分子。 - 第1の抗原結合ドメインの軽鎖可変ドメインが、配列番号4に記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含み、かつ
第1の抗原結合ドメインの重鎖可変ドメインが、配列番号10、12、及び13のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含む、請求項1〜14のいずれか一項に記載の抗体分子。 - 第1の抗原結合ドメインは:
(a)軽鎖可変ドメインが、配列番号4に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号10に記載のアミノ酸配列を含み、
(b)軽鎖可変ドメインが、配列番号5に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号11に記載のアミノ酸配列を含み、
(c)軽鎖可変ドメインが、配列番号6に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号12に記載のアミノ酸配列を含み、
(d)軽鎖可変ドメインが、配列番号7に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号13に記載のアミノ酸配列を含み、又は
(e)軽鎖可変ドメインが、配列番号8に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号14に記載のアミノ酸配列を含み、
上記の各々の軽鎖可変ドメイン及び重鎖可変ドメインが、上記のアミノ酸配列と少なくとも90%の同一性を有するものであってもよい、
請求項1〜15のいずれか一項に記載の抗体分子。 - 第1の抗原結合ドメインが、軽鎖可変ドメイン及び重鎖可変ドメインを含み、軽鎖可変ドメインが、軽鎖相補性決定領域(LCDR)1、LCDR2、及びLCDR3を含み、LCDR1が、配列番号58に記載のアミノ酸配列を含み、LCDR2が、配列番号59に記載のアミノ酸配列を含み、かつLCDR3が、配列番号20に記載のアミノ酸配列を含み、並びに重鎖可変ドメインが、重鎖相補性決定領域(HCDR)1、HCDR2、及びHCDR3を含み、HCDR1が、配列番号60に記載のアミノ酸配列を含み、HCDR2が、配列番号61に記載のアミノ酸配列を含み、かつHCDR3が、配列番号62に記載のアミノ酸配列を含み、各々の相補性決定領域の配列が、最大2つのアミノ酸位置で所与の配列と異なっていてもよい、請求項1に記載の抗体分子。
- 第1の抗原結合ドメインは、軽鎖可変ドメインが、配列番号3、4、5、6、7、及び8のうちの1つに記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号9、10、11、12、13、及び14のうちの1つに記載のアミノ酸配列を含み、
上記の軽鎖可変ドメイン及び重鎖可変ドメインが、上記のアミノ酸配列と少なくとも90%の同一性を有するものであってもよい、請求項17に記載の抗体分子。 - 第1の抗原結合ドメインは:
(a)軽鎖可変ドメインが、配列番号3に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号9に記載のアミノ酸配列を含み、
(b)軽鎖可変ドメインが、配列番号4に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号10に記載のアミノ酸配列を含み、
(c)軽鎖可変ドメインが、配列番号5に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号11に記載のアミノ酸配列を含み、
(d)軽鎖可変ドメインが、配列番号6に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号12に記載のアミノ酸配列を含み、
(e)軽鎖可変ドメインが、配列番号7に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号13に記載のアミノ酸配列を含み、又は
(f)軽鎖可変ドメインが、配列番号8に記載のアミノ酸配列を含み、かつ重鎖可変ドメインが、配列番号14に記載のアミノ酸配列を含み、
上記の軽鎖可変ドメイン及び重鎖可変ドメインが、上記のアミノ酸配列と少なくとも90%の同一性を有するものであってもよい、請求項17又は請求項18に記載の抗体分子。 - 第2の抗原結合ドメインが、軽鎖可変ドメイン及び重鎖可変ドメインを含み、軽鎖可変ドメインが、配列番号63、64、65、66、67、及び68のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含み、かつ重鎖可変ドメインが、配列番号69、70、71、72、73、及び74のうちの1つに記載のアミノ酸配列、又はそれと少なくとも90%の同一性を有する配列を含む、請求項1〜19のいずれか一項に記載の抗体分子。
- 第1の抗原結合ドメインが、scFv抗体である、請求項1〜20のいずれか一項に記載の抗体分子。
- 第2の抗原結合ドメインが、scFv抗体である、請求項1〜21のいずれか一項に記載の抗体分子。
- 第1及び第2の抗原結合ドメインが、ペプチドリンカーによって共有結合により連結されたscFv抗体である、請求項1〜22のいずれか一項に記載の抗体分子。
- 抗体分子が、配列番号75若しくは76の配列、又はそれと少なくとも90%の配列同一性を有する配列を含む、請求項1〜23のいずれか一項に記載の抗体分子。
- 請求項1〜24のいずれか一項に記載の抗体分子をコードする単離された核酸分子。
- プロモーターに作動可能に連結された、請求項25に記載の単離された核酸分子。
- 請求項25又は請求項26に記載の単離された核酸分子を含む発現ベクター。
- 請求項25若しくは26に記載の核酸分子、又は請求項27に記載のベクターによって形質転換された単離された宿主細胞。
- がんの処置に使用するための、請求項1〜24のいずれか一項に記載の抗体分子又は請求項25に記載の核酸分子。
- がんの処置のための医薬の製造における請求項1〜24のいずれか一項に記載の抗体分子又は請求項25に記載の核酸分子の使用。
- 請求項1〜24のいずれか一項に記載の抗体分子、請求項25に記載の核酸分子、又は請求項26に記載のベクターを、対象に投与するステップを含む、がんを処置するための方法。
- がんが、白血病、膵臓がん、前立腺がん、結腸がん、膀胱がん、卵巣がん、膠芽腫、精巣がん、子宮がん、副腎がん、乳がん、肺がん、黒色腫、神経芽腫、肉腫、又は腎臓がんである、請求項29若しくは請求項30に記載の使用、又は請求項31に記載の方法。
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