JP6823659B2 - 上皮成長因子受容体変異体iiiを標的とするキメラ抗原受容体 - Google Patents
上皮成長因子受容体変異体iiiを標的とするキメラ抗原受容体 Download PDFInfo
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- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 1
- 108010036169 three prime repair exonuclease 1 Proteins 0.000 description 1
- 230000002992 thymic effect Effects 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- 238000003151 transfection method Methods 0.000 description 1
- 238000003146 transient transfection Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014621 translational initiation Effects 0.000 description 1
- 102000035160 transmembrane proteins Human genes 0.000 description 1
- 108091005703 transmembrane proteins Proteins 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 239000001226 triphosphate Substances 0.000 description 1
- 235000011178 triphosphate Nutrition 0.000 description 1
- 125000002264 triphosphate group Chemical group [H]OP(=O)(O[H])OP(=O)(O[H])OP(=O)(O[H])O* 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 230000002476 tumorcidal effect Effects 0.000 description 1
- 125000001493 tyrosinyl group Chemical group [H]OC1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])(N([H])[H])C(*)=O 0.000 description 1
- 241000701447 unidentified baculovirus Species 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
- 239000004474 valine Substances 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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Description
本明細書に開示された発明は、キメラ抗原受容体(CAR)およびEGFRvIII(例えば、ヒトEGFRvIII)に特異的に結合するCARを含む免疫細胞(例えば、CAR−T細胞)を提供する。本発明は、これらのCARをコードするポリヌクレオチド、これらのCAR−T細胞を含む組成物およびこれらのCARおよびCAR−T細胞を作製し、使用する方法も提供する。本発明は、がんのような、対象におけるEGFRvIII媒介性の病理に関連した状態を処置するための方法も提供する。
本発明の実施は、別段の指示のない限り、当業者の能力の範囲内にある分子生物学(組換え技術を含む)、微生物学、細胞生物学、生化学、免疫学、ウイルス学、モノクローナル抗体の生成および操作の従来技術を採用する。そのような技術は、Molecular Cloning: A Laboratory Manual, second edition (Sambrook et al., 1989) Cold Spring Harbor Press;Oligonucleotide Synthesis (M.J. Gait, ed., 1984);Methods in Molecular Biology, Humana Press;Cell Biology: A Laboratory Notebook (J.E. Cellis, ed., 1998) Academic Press;Animal Cell Culture (R.I. Freshney, ed., 1987);Introduction to Cell and Tissue Culture (J.P. Mather and P.E. Roberts, 1998) Plenum Press;Cell and Tissue Culture: Laboratory Procedures (A. Doyle, J.B. Griffiths, and D.G. Newell, eds., 1993-1998) J. Wiley and Sons;Methods in Enzymology (Academic Press, Inc.);Handbook of Experimental Immunology (D.M. Weir and C.C. Blackwell, eds.);Gene Transfer Vectors for Mammalian Cells (J.M. Miller and M.P. Calos, eds., 1987)Current Protocols in Molecular Biology (F.M. Ausubel et al., eds., 1987);PCR: The Polymerase Chain Reaction, (Mullis et al., eds., 1994);Current Protocols in Immunology (J.E. Coligan et al., eds., 1991);Short Protocols in Molecular Biology (Wiley and Sons, 1999);Immunobiology (C.A. Janeway and P. Travers, 1997);Antibodies (P. Finch, 1997);Antibodies: a practical approach (D. Catty., ed., IRL Press, 1988-1989);Monoclonal antibodies: a practical approach (P. Shepherd and C. Dean, eds., Oxford University Press, 2000);Using antibodies: a laboratory manual (E. Harlow and D. Lane (Cold Spring Harbor Laboratory Press, 1999);The Antibodies (M. Zanetti and J.D. Capra, eds., Harwood Academic Publishers, 1995)のような文献において十分に説明されている。
本明細書中で使用されるとき、用語「細胞外リガンド結合ドメイン」は、リガンドに結合することができるオリゴまたはポリペプチドをさす。ドメインは、細胞表面分子と相互作用することができることが好ましい。例えば、細胞外リガンド結合ドメインは、特別な疾患状態に関連した標的細胞上の細胞表面マーカーとして作用するリガンドを認識するように選択され得る。
本発明は、EGFRvIII(例えば、ヒトEGFRvIII(例えば、配列番号201、受け入れ番号:P00533 Feature Identifier VAR_066493またはGenBank受け入れ番号AJN69267))に結合するCARを提供する。本明細書に提供されるEGFRvIII特異的CARは、一本鎖CARおよび多鎖CARを含む。CARは、非MHC拘束性の方法でEGFRvIIIに対するT細胞特異性および反応性を再指示し、モノクローナル抗体の抗原結合特性を利用する能力を有する。非MHC拘束性の抗原認識は、CARを発現するT細胞に、抗原プロセシングに依存せずに抗原を認識し、こうして、腫瘍エスケープの主要メカニズムをバイパスする能力を与える。
免疫療法における使用のための免疫細胞を調製する方法が、本明細書に提供される。ある実施形態では、方法は、本発明によるCARを免疫細胞内に導入することと、細胞を増やすことを含む。ある実施形態では、本発明は、免疫細胞を操作する方法であって、細胞を用意することと、細胞の表面において少なくとも1つの上記CARを発現させることを含む方法に関する。免疫細胞を操作する方法は、例えば、それぞれが参照することにより全体として本明細書に組み込まれるPCT特許出願公開第WO/2014/039523号、同第WO2014/184741号、同第WO2014/191128号、同第WO2014/184744号および同第WO2014/184143号に記載されている。ある実施形態では、方法は、本明細書に記載のCARをコードする少なくとも1つのポリヌクレオチドを用いて細胞を形質転換することと、細胞中でポリヌクレオチドを発現させることを含む。
リピートTRAC T01−L
LTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号218)
LTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号219)
LTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号220)
NPQRSTVWYLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号221)
LTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号222)
LTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号223)
LTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号224)
LTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNNGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGKQALETVQRLLPVLCQAHGLTPEQVVAIASNIGGKQALETVQALLPVLCQAHGLTPEQVVAIASHDGGKQALETVQRLLPVLCQAHGLTPQQVVAIASNGGGRPALE(配列番号225)
本発明は、本明細書に記載のCARポリヌクレオチドのいずれかを含む操作された免疫細胞も提供する。ある実施形態では、CARは、プラスミドベクターを介して、導入遺伝子として免疫細胞内に導入され得る。ある実施形態では、プラスミドベクターは、例えば、ベクターを受容した細胞の同定および/または選択を提供する選択マーカーも含有し得る。
CPYSNPSLCSGGGGSELPTQGTFSNVSTNVSPAKPTTTACPYSNPSLCSGGGGSP APRPPTPAPTIASQPLSLRPEACRPAAGGAVHTRGLDFACDIYIWAPLAGTCGVLLLS LVITLYCNHRNRRRVCKCPRPW(配列番号226)
上記方法により得られた単離細胞またはそのような単離細胞に由来する細胞株は、医薬として使用され得る。ある実施形態では、そのような医薬は、固形腫瘍および液性腫瘍を含むがんを処置するために使用され得る。ある実施形態では、がんは、神経膠芽腫(例えば、多形神経膠芽腫)、未分化星状細胞腫、巨細胞膠芽腫、膠肉腫、未分化乏突起神経膠腫、未分化上衣腫、未分化乏突起星状細胞腫、脈絡叢がん、未分化神経節膠腫、松果体芽細胞腫、松果体細胞腫、髄膜腫、髄様上皮腫、上衣芽細胞腫、髄芽細胞腫、テント上原始神経外胚葉腫瘍、非定型奇形腫/ラブドイド腫瘍、混合膠腫、頭頸部がん、非小細胞肺がん、乳がん、卵巣がん、前立腺がん、髄芽細胞腫、結腸直腸がん、肛門がん、子宮頸部がん、腎臓がん、皮膚がん、膵臓がん、肝臓がん、膀胱がん、胃がん、甲状腺がん、中皮腫、子宮がん、リンパ腫または白血病を含むが、これに限定されないEGFRvIII関連がん(例えば、任意のEGFRvIIIを発現するがん)である。
本発明は、本方法における使用のためのキットも提供する。本発明のキットは、EGFRvIII特異的CARをコードするポリヌクレオチドまたは本明細書に記載のEGFRvIII特異的CARをコードするポリヌクレオチドを含む操作された免疫細胞を含む、1以上の容器および本明細書に記載の本発明の方法のいずれかに従う使用のための指示書を含む。一般に、これらの指示書は、上記治療的処置のための操作された免疫細胞の投与の説明を含む。
本発明の代表的な材料は、 にAmerican Type Culture Collection(「ATCC」)、1081 University Boulvard, Manassas, Va., 20110-2209, USAに寄託された。ATCC受け入れ番号__を有するベクター__は、__軽鎖可変領域をコードするポリヌクレオチドであり、ATCC受け入れ番号__を有するベクター__は、__重鎖可変領域をコードするポリヌクレオチドである。寄託は、特許手続きのための微生物寄託の国際認識に関するブダペスト条約の規定およびそれに従う規則(「ブダペスト条約」)の下で行われた。これは、寄託物の生きた培養の維持を寄託日から30年間保証する。寄託物はブダペスト条約の条項に従ってATCCの下で利用可能となり、また、関連する米国特許が発行された際または任意の米国もしくは外国特許出願が一般に公開された際のいずれか早い方において、寄託培養物の子孫の一般への永久的かつ無期限な利用可能性を保証し、米国特許法§122およびそれに準じた長官の規則(米国特許法施行規則§1.14を含み、特に、886OG638を参照)に従って米国特許商標庁長官によりその権利があると決定された者へのその子孫の利用可能性を保証する、Pfizer Inc.とATCCの間の合意の対象である。
この実施例は、25℃および37℃において、キメラおよびヒト化抗EGFRvIII抗体の親和性を決定する。
ハイブリドーマから生成された抗EGFRvIIIマウス(m)抗体、m62G7を、配列決定し、マウス−ヒトキメラ抗体としての発現のための好適なベクター中にサブクローニングした。マウス抗体m62G7のCDRを、ヒトフレームワークに移植し、ヒトIgG1組換え抗体、h62G7として発現させた。h62G7の親和性変異体(affinity variant)を、重鎖および軽鎖のCDRに突然変異を導入することにより作製した。組換え抗EGFRvIIIキメラ抗体m62G7およびヒト化h62G7抗体の親和性を、研究グレードの抗ヒトFc結合CM4センサーチップ(GE Healthcare Inc., Piscataway, NJ)を備えた表面プラズモン共鳴Biacore(登録商標)T200バイオセンサーにおいて測定した。次いで、抗EGFRvIII抗体を抗ヒトFcにより捕捉した。次いで、モノマーの8−ヒスチジンタグ付きヒトEGFRvIII細胞外ドメインを、最高濃度1000nMの一連の10倍希釈液の分析物として注入した。ヒトEGFRvIIIに対する抗EGFRvIII抗体の親和性を、25℃および37℃の両方で測定した(表6)。これらの抗体のいずれも、同じアッセイ条件下で1000nMの8−ヒスチジンタグ付き組換え野生型タンパク質EGFRvIIIwtへの検出可能な結合を示さなかった。
この実施例は、37℃において、様々なヒト抗EGFRvIII抗体の親和性を決定する。
EGFRvIIIに対するヒト抗体を生成するために、トランスジェニクAlivaMabマウス(Ablexis LLC, San Francisco, CA)を、EGFRvIIIを発現するパラホルムアルデヒドで固定したラット神経膠芽腫細胞株、F98−npEGFRvIII(American Type Culture Collection,Manassas, VA)およびEGFRvIIIのジャンクション領域に対するペプチド(配列番号227:CGSGSGLEEKKGNYVVTDH)を交互に用いて免疫化した。標準的技術を使用してハイブリドーマを生成した。EGFRvIIIに対するこれらのハイブリドーマの結合親和性および特異性を決定するために、培養上清中の抗体を、抗マウスFc結合CM4センサーチップ(Biacore(商標)AB, Uppsala, Sweden - 現在はGE Healthcare)を備えたBiacore(商標)T200バイオセンサーにより捕捉した。次いで、モノマーの8−ヒスチジンタグ付きヒトEGFRvIII細胞外ドメインを、最高濃度1000nMの一連の10倍希釈液の分析物として注入した。ヒトEGFRvIIIに対する抗EGFRvIII抗体の親和性を、37℃で測定した(表7)。これらのハイブリドーマのいずれも、同じアッセイ条件下で1000nMの8−ヒスチジンタグ付き組換え野生型タンパク質EGFRvIIIwtへの検出可能な結合を示さなかった。
この実施例は、EGFRvIII発現細胞への抗EGFRvIII抗体の細胞結合特異性を示す。
AlivaMabマウスから生成された抗EGFRvIII抗体の細胞結合特異性を評価するために、すべてAmerican Type Culture Collection(Manassas, VA)から入手した3種の同質遺伝子的ラット神経膠芽腫細胞株およびヒトがん細胞株:F98(ヒトEGFRのいかなる形態も発現しない)、F98−EGFRwt(野生型EGFRを発現する)、F98−npEGFRvIII(EGFRvIIIを発現する)およびA431(野生型EGFRの過剰発現を伴う類表皮がん細胞株)を使用した。細胞染色のために、500,000個の細胞を50μlのハイブリドーマ上清とともに45分間、4℃でインキュベートし、結合バッファー(PBS(リン酸緩衝生理食塩水)]+0.5%BSA(ウシ血清アルブミン))を用いて洗浄し、続いて、Jackson ImmunoResearch Loboratories(West Grove, PA)からのFITC−コンジュゲーションヤギ抗マウスFc特異的二次抗体とのインキュベーションを行った。表8Aおよび8Bは、EGFRvIII発現細胞株におけるEGFRvIII抗体(クローン20G5を除く)の平均蛍光強度(MFI)が、非発現細胞株よりも少なくとも10倍高かったことを示す。図1A、図1Bおよび図1Cは、クローニングされ、組換えヒトIgG1抗体、42G9(図1A)、32A10(図1B)および32G8(図1C)として発現された3種のEGFRvIII特異的クローンの、3つのF98細胞株へのFACS結合ヒストグラムの例を示す。
この実施例は、25℃において、様々なヒト抗EGFRvIII抗体の親和性を決定する。
ヒト抗EGFRvIII抗体を配列決定し、組換えヒトIgG1抗体としての発現のための好適なベクター中にサブクローニングした。抗体の親和性を、抗ヒトFc結合CM4センサーチップ(GE Healthcare Inc., Piscataway, NJ)を備えた表面プラズモン共鳴Biacore(登録商標)T200バイオセンサーにおいて25℃で測定した(表9)。抗EGFRvIII抗体を抗ヒトFcにより捕捉した。次いで、モノマーの8−ヒスチジンタグ付きヒトEGFRvIII細胞外ドメインを、最高濃度1000nMの一連の10倍希釈液の分析物として注入した。2つの抗体の中ではC6のみが、1000nMの8−ヒスチジンタグ付き組換え野生型タンパク質EGFRwtへの非常に弱いが検出可能な結合を25℃において示した。
この実施例は、様々な組換え一本鎖Fvフォーマット抗EGFRvIII抗体の親和性を37℃において決定する。
従来の抗体を一本鎖Fv(scFv)断片に変換するために、重鎖可変ドメインおよび軽鎖可変ドメインを、(GGGGS)4(配列番号202)リンカーを介して一緒に結合した。次いで、scFv断片をヒトIgG1 Fc部分に融合して、組換え発現および精製を容易にした。scFv−Fc融合タンパク質の親和性を、抗ヒトFc結合CM4センサーチップ(GE Healthcare Inc., Piscataway, NJ)を備えた表面プラズモン共鳴Biacore(登録商標)T200バイオセンサーにおいて37℃で上記のとおりに測定した。scFv−Fcタンパク質を抗ヒトFcにより捕捉した。次いで、モノマーの8−ヒスチジンタグ付きヒトEGFRvIII細胞外ドメインを、最高濃度1000nMの一連の10倍希釈液の分析物として注入した。表10は、scFv再フォーマット融合タンパク質が、EGFRvIIIへの結合を維持し、HL(N末端に重鎖可変ドメインを含む)およびLH(N末端に軽鎖可変ドメインを含む)方向の両方におけるscFv−Fcタンパク質の親和性が、表6、7および9に列挙されたそれらの従来の抗体カウンターパートに匹敵することを示している。これらのscFv−Fcタンパク質も、1000nMの8−ヒスチジンタグ付き組換え野生型タンパク質EGFRvIIIwtへの結合について25℃で試験したが、顕著な結合を示したものはなかった。
この実施例は、EGFRvIII特異的CAR T細胞の発現および抗原結合特異性を決定する。
AllCells(Alameda, CA)により提供された健常ドナー由来のPBMCを、提供者の仕様書に従って融解し、5%ヒト血清を補充したX−Vivo(商標)−15培地(Lonza, Walkersville, MD)中、終夜培養した。20ng/mLのヒトIL−2、5%ヒト血清およびビーズ:細胞比1:1のDynabeads Human T activator CD3/CD28(Life Technologies, Carlsbad, CA)を補充したX−Vivo(商標)−15培地(Lonza)中で3日間、T細胞を活性化した。次いで、感染多重度(MOI)5のEF1αプロモーターの制御下で、BFP−T2A−EGFRvIII特異的CAR発現カセットを含有する2シストロン性のレンチウイルスベクターを用いてT細胞に形質導入した。このコンストラクトにおいては、EGFRvIII特異的CARは、BFP(青色蛍光タンパク質)と共発現して、EGFRvIII特異的CARの検出を容易にする。EGFRvIII特異的CARは、異なる抗EGFRvIIIクローン(本明細書中、他の場所に記載のh62G7−L6/EQ、14C11、20B9、32A10、42G9、C6、20E12、26B9、30D8および32G8)のVHおよびVL配列を含有していた。形質導入後、CAR T細胞を14日以下、培養中に維持した。EGFRvIII特異的CARを発現する細胞のパーセンテージを、BFP(青色蛍光タンパク質)を検出のために使用するフローサイトメトリーにより経時的に(初代T細胞のレンチウイルス形質導入後4日目、9日目および14日目)モニターした(図2A)(BFP陽性生存細胞のパーセンテージにより決定した)。
これらの結果は、クローンh62G7−L6/EQ、14C11、20B9、32A10、42G9、20E12、26B9および30D8のVHおよびVL配列を含むCARを含有するCAR T細胞が、EGFRvIII−mFcに結合するが、EGFR−mFcに顕著には結合しないことを示している。
この実施例は、標的を発現するがん細胞株の存在下および非存在下における、EGFRvIII特異的CAR T細胞の脱顆粒活性を決定する。
CAR T細胞の脱顆粒活性を評価するために5つの細胞株を使用した。ヒト肺がん細胞株NCI−H522および神経膠芽腫細胞株U87MGを、American Type Culture Collection(Manassas, VA)から入手し、10%熱失活したウシ胎仔血清(Mediatech Inc., Manassas, VA)を補充したRPMI1640培地中で培養した。ほとんどのがん細胞株がEGFRvIIIを発現しないため、NCI−H522(検出可能なレベルの野生型EGFRまたはEGFRvIIIを発現しない)に、完全長EGFRvIII遺伝子(配列番号201)をコードするレンチウイルスベクターを用いて形質導入して、「NCI−H522−EGFRvIII」を生成し、これは低レベルのEGFRvIIIを発現する。様々なEGFRタンパク質を発現する同質遺伝子的なヒト神経膠芽腫細胞株を生成するために、U87MGの内在性野生型EGFR遺伝子を最初にノックアウトして、EGFR−ヌル細胞株「U87−KO」を生成した。次いで、完全長野生型EGFR遺伝子(受け入れ番号NP_005219)をコードするレンチウイルスベクターを用いてU87−KO細胞に形質導入して、EGFR過剰発現細胞株「U87−KO−EGFRwt」を得た。同様に、「U87−KO−EGFRvIII」(EGFRvIIIを過剰発現する)を、完全長EGFRvIII遺伝子(配列番号201)をコードするベクターを用いたレンチウイルス形質導入により、U87−KOから生成した。
これらの結果は、EGFRvIII特異的CAR T細胞が、EGFRvIIIを発現する腫瘍細胞の存在下で脱顆粒活性を示すが、EGFRvIIIを発現しない腫瘍細胞の存在下では脱顆粒活性を示さないことを示している。
この実施例は、EGFRvIII特異的CAR T細胞の、標的タンパク質を発現する細胞株との共培養に際した、EGFRvIII特異的CAR T細胞のIFNγ分泌のレベルを示す。
異なるEGFRvIII特異的クローン(h62G7−L6/EQ、14C11、20B9、32A10、42G9、C6、20E12、26B9、30D8および32G8)を含有する、CARを発現するEGFRvIII特異的CAR T細胞を、様々なレベルのEGFRvIIIまたはEGFRwtタンパク質を発現する同数の細胞(細胞NCI−H522、NCI−H522−EGFRvIII、U87−KO、U87−KO−EGFRwtおよびU87−KO−EGFRvIII;それぞれ、実施例7に上記した)と一緒に96ウエルプレート中でインキュベートした(100,000細胞/ウエル)。共培養を、100μlの最終容量のX−Vivo(商標)−15培地(Lonza)中に18時間、37℃で5%CO2とともに維持した。次いで、上清を収集して凍結した。上清中のIFNγを、ヒトIFN−ガンマQuantikine ELISAキット(R&D systems, Minneapolis, MN)を用い、製造者の仕様書に従って測定した。図4に示すとおり、大多数のCAR T細胞に関して、IFNγ分泌のレベルは共培養した細胞により発現されたEGFRvIIIの量と相関し:低発現性NCI−H522−EGFRvIIIは、少量のIFNγを誘導し、高発現性U87−KO−EGFRvIIIは、大量のIFNγを誘導した。EGFRvIII特異的クローン32G8 CARを発現するT細胞は、試験した条件下で顕著なレベルのIFNγを分泌しなかった。一方、EGFRvIII特異的クローンC6 CAR T細胞は、U87−KO−EGFRwtまたはU87−KO−EGFRvIII細胞のいずれかとの共培養に際し、高レベルのIFNγを分泌した。
これらの結果は、大多数のEGFRvIII特異的CAR T細胞に関して、IFNγ分泌のレベルは、共培養した細胞により発現されたEGFRvIIIの量と相関することを示す。
この実施例は、EGFRvIII特異的CAR T細胞の、標的タンパク質を発現する細胞株との共培養に際した、EGFRvIII特異的CAR T細胞の細胞傷害性を決定する。
異なるEGFRvIII特異的クローン(h62G7−L6/EQ、14C11、20B9、32A10、42G9、C6、20E12、26B9、30D8および32G8)を含有する、CARを発現するEGFRvIII特異的CAR T細胞を、様々なレベルのEGFRvIIIタンパク質を発現する20,000個の標的細胞と一緒に96ウエルプレートに播種した(400,000細胞/ウエル)。標的細胞は:上記U87−KO−EGFRwt、NCI−H522−EGFRvIIIおよびU87−KO−EGFRvIIIであった。標的(EGFRvIII陽性:NCI−H522−EGFRvIIIおよびU87−KO−EGFRvIII)ならびに対照(EGFRvIII陰性:U87−KO−EGFRwt)細胞を、プレーティングし、これらをEGFRvIII特異的CAR T細胞と一緒に共培養する前に、蛍光細胞内色素CFSEを用いて標識した。共培養を、5%CO2とともに37℃で4時間インキュベートした。このインキュベーション期間後、固定可能なバイアビリティー色素を用いて細胞を標識し、フローサイトメトリーにより分析した。各細胞集団(EGFRvIII陽性標的細胞またはEGFRvIII陰性対照細胞)のバイアビリティーを決定し、特異的な細胞溶解の%を計算した。細胞傷害性アッセイを、T細胞のCAR形質導入の14日後に行った。32G8を除いたすべてのEGFRvIII特異的CAR T細胞は、低レベル標的発現細胞(NCI−H522−EGFRvIII)および高レベル標的発現細胞(U87−KO−EGFRvIII)の両方を様々な程度まで溶解した。加えて、EGFRvIII特異的クローンC6 CAR T細胞は、野生型EGFRおよびEGFRvIII発現細胞の両方を溶解した(図5)。
これらの結果は、EGFRvIII特異的CAR T細胞が、EGFRvIIIを発現する細胞を効果的に死滅させることを示している。
この実施例は、皮下U87−KO−EGFRvIII GBM異種移植片モデルにおけるEGFRvIII特異的CAR T細胞の抗腫瘍活性を示す。
5〜6週齢のNSGマウス(Jackson Laboratory, Sacramento, CA)に、3,000,000個のU87−KO−EGFRvIII GBM腫瘍細胞(上記)を皮下に埋め込んだ。キャリパー機器により、1週間に1回、腫瘍容積を測定し、以下の式:腫瘍容積=(長さ×幅2)/2を用いて計算した。腫瘍埋め込み後8日目に、腫瘍サイズにより動物を1群当たり動物5頭に無作為に選び、ボーラス尾静脈注射により、6,000,000個の単回用量のCAR陽性EGFRvIII特異的CAR T細胞(EGFRvIII特異的クローン14C11、32A10または26B9を発現する;クローンは、本明細書の他所に記載されている)または同じ総数の非形質導入T細胞を投与した。図6は、14C11、32A10および26B9 EGFRvIII特異的CAR T細胞がU87−KO−EGFRvIII異種移植片の腫瘍成長をインビボで阻害したが、非形質導入T細胞は阻害しなかったことを示す。
これらの結果は、EGFRvIII特異的CAR T細胞が、EGFRvIII発現細胞の腫瘍成長をインビボで効果的に阻害したことを示している。
この実施例は、R2自殺配列を含有するEGFRvIII特異的CARのT細胞における発現を示す。
R2自殺配列は、CD20エピトープに基づく自殺配列であり、リツキシマブ認識エピトープの2つのタンデムコピーを含有する。R2配列を、本明細書の他所に記載の様々なEGFRvIII特異的CAR(14C11、32A10、30D8および26B9)のscFvとCD8αヒンジ配列の間に挿入して、様々なEGFRvIII−R2 CAR(本明細書中でそれぞれ「14C11−R2」、「32A10−R2」、「30D8−R2」および「26B9−R2」と呼ばれる)を生成した。EF1αプロモーターの制御下、5または25(クローン26B9−R2および30D8−R2に関して)の感染多重度(MOI)で様々なEGFR−R2 CAR発現カセットを含むレンチウイルスベクターを用いてT細胞に形質導入した。CAR T細胞を、形質導入後14または15日まで培養中に維持した。細胞にビオチン化組換えタンパク質:EGFRvIII−mFcまたはリツキシマブ(EZ−Link(商標)Sulfo−NHS−SS−Biotinとコンジュゲートした;ThermoFisheer, Waltham, MA)、続いてPEコンジュゲートしたストレプトアビジン(BD Biosiences, San Diego, CA)を使用して、フローサイトメトリーにより経時的に(T細胞形質導入後4日目、9/10日目および14/15日目)CAR発現をモニターした。ビオチン化EGFRvIII−mFcおよびビオチン化リツキシマブを用いて検出したCAR陽性細胞のパーセンテージを、図7および8にそれぞれ示す。非形質導入T細胞(NTD)への結合を、対照として提供する。
これらの結果は、R2自殺配列を含有するEGFRvIII特異的CARのT細胞中での発現を示している。
この実施例は、標的発現細胞株との共培養に際した、EGFRvIII特異的 R2 CAR T細胞の細胞傷害性を示す。
実施例11に記載のEGFRvIII−R2 CAR、14C11−R2、32A10−R2、30D8−R2および26B9−R2を使用して、実施例9に記載のとおりに細胞傷害性アッセイを行った。試験したすべてのEGFRvIII特異的 R2 CAR T細胞が、低レベル標的発現細胞(NCI−H522−EGFRvIII)および高レベル標的発現細胞(U87−KO−EGFRvIII)の両方を様々な程度まで溶解することができた(図9)。
これらの結果は、EGFRvIII特異的 R2 CAR T細胞が、EGFRvIIIを発現する細胞を効果的に死滅させることを示している。
Claims (30)
- 上皮成長因子受容体変異体III(EGFRvIII)結合ドメイン、膜貫通ドメインおよび細胞内シグナル伝達ドメインを含むEGFRvIII特異的キメラ抗原受容体(CAR)であって、EGFRvIII結合ドメインが:
(a)42G9の重鎖可変(VH)相補性決定領域1(VH CDR1)、VH相補性決定領域2(VH CDR2)、およびVH相補性決定領域3(VH CDR3)の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含む重鎖可変(VH)領域であって、VH CDR1は配列番号74〜76のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号77〜78のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号79のアミノ酸配列を含む、VH領域、および
42G9の軽鎖可変(VL)相補性決定領域1(VL CDR1)、VL相補性決定領域2(VL CDR2)、およびVL相補性決定領域3(VL CDR3)の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含む軽鎖可変(VL)領域であって、VL CDR1は配列番号156のアミノ酸配列を含み、VL CDR2は配列番号157のアミノ酸配列を含み、およびVL CDR3は配列番号158のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号9のアミノ酸配列を含み、VL領域は配列番号10のアミノ酸配列を含む;または
(b)32A10のVH CDR1、VH CDR2、およびVH CDR3の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含むVH領域であって、VH CDR1は配列番号80〜82のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号83〜84のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号85のアミノ酸配列を含む、VH領域、および
32A10のVL CDR1、VL CDR2、およびVL CDR3の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含むVL領域であって、VL CDR1は配列番号159のアミノ酸配列を含み、VL CDR2は配列番号160のアミノ酸配列を含み、およびVL CDR3は配列番号161のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号11のアミノ酸配列を含み、VL領域は配列番号12のアミノ酸配列を含む;または
(c)20B9のVH CDR1、VH CDR2、およびVH CDR3の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含むVH領域であって、VH CDR1は配列番号80〜82のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号86〜87のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号79のアミノ酸配列を含む、VH領域、および
20B9のVL CDR1、VL CDR2、およびVL CDR3の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含むVL領域であって、VL CDR1は配列番号162のアミノ酸配列を含み、VL CDR2は配列番号163のアミノ酸配列を含み、およびVL CDR3は配列番号164のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号13のアミノ酸配列を含み、VL領域は配列番号14のアミノ酸配列を含む;または
(d)14C11のVH CDR1、VH CDR2、およびVH CDR3の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含むVH領域であって、VH CDR1は配列番号88〜90のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号91〜92のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号85のアミノ酸配列を含む、VH領域、および
14C11のVL CDR1、VL CDR2、およびVL CDR3の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含むVL領域であって、VL CDR1は配列番号165のアミノ酸配列を含み、VL CDR2は配列番号163のアミノ酸配列を含み、およびVL CDR3は配列番号161のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号15のアミノ酸配列を含み、VL領域は配列番号16のアミノ酸配列を含む;または
(e)30D8のVH CDR1、VH CDR2、およびVH CDR3の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含むVH領域であって、VH CDR1は配列番号109〜111のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号112〜113のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号114のアミノ酸配列を含む、VH領域、および
30D8のVL CDR1、VL CDR2、およびVL CDR3の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含むVL領域であって、VL CDR1は配列番号182のアミノ酸配列を含み、VL CDR2は配列番号183のアミノ酸配列を含み、およびVL CDR3は配列番号184のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号37のアミノ酸配列を含み、VL領域は配列番号38のアミノ酸配列を含む;または
(f)20E12のVH CDR1、VH CDR2、およびVH CDR3の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含むVH領域であって、VH CDR1は配列番号115〜117のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号118〜119のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号120のアミノ酸配列を含む、VH領域、および
20E12のVL CDR1、VL CDR2、およびVL CDR3の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含むVL領域であって、VL CDR1は配列番号185のアミノ酸配列を含み、VL CDR2は配列番号186のアミノ酸配列を含み、およびVL CDR3は配列番号184のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号39のアミノ酸配列を含み、VL領域は配列番号40のアミノ酸配列を含む;または
(g)26B9のVH CDR1、VH CDR2、およびVH CDR3の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含むVH領域であって、VH CDR1は配列番号121〜123のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号124〜125のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号126のアミノ酸配列を含む、VH領域、および
26B9のVL CDR1、VL CDR2、およびVL CDR3の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含むVL領域であって、VL CDR1は配列番号187のアミノ酸配列を含み、VL CDR2は配列番号188のアミノ酸配列を含み、およびVL CDR3は配列番号189のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号41のアミノ酸配列を含み、VL領域は配列番号42のアミノ酸配列を含む;または
(h)12B2のVH CDR1、VH CDR2、およびVH CDR3の3つの相補性決定領域を、N末端からC末端の方向にVH CDR1、VH CDR2、およびVH CDR3の順で含むVH領域であって、VH CDR1は配列番号74〜76のうちの1つのアミノ酸配列を含み、VH CDR2は配列番号102〜103のうちの1つのアミノ酸配列を含み、およびVH CDR3は配列番号104のアミノ酸配列を含む、VH領域、および
12B2のVL CDR1、VL CDR2、およびVL CDR3の3つの相補性決定領域を、N末端からC末端の方向にVL CDR1、VL CDR2、およびVL CDR3の順で含むVL領域であって、VL CDR1は配列番号176のアミノ酸配列を含み、VL CDR2は配列番号172のアミノ酸配列を含み、およびVL CDR3は配列番号177のアミノ酸配列を含む、VL領域、ここで
VH領域は配列番号30のアミノ酸配列を含み、VL領域は配列番号31のアミノ酸配列を含む、
を含む、EGFRvIII特異的CAR。 - 細胞内シグナル伝達ドメインが、CD3ゼータシグナル伝達ドメインを含む、請求項1に記載のEGFRvIII特異的CAR。
- 細胞内シグナル伝達ドメインが第1細胞内シグナル伝達ドメインであり、CARが第2細胞内シグナル伝達ドメインをさらに含む、請求項1または2に記載のEGFRvIII特異的CAR。
- 第1細胞内シグナル伝達ドメインがCD3ゼータシグナル伝達ドメインを含み、第2細胞内シグナル伝達ドメインが4−1BBシグナル伝達ドメインを含む、請求項3に記載のEGFRvIII特異的CAR。
- 請求項1に記載のEGFRvIII特異的CARをコードする核酸配列を含む、単離ポリヌクレオチド。
- 請求項5に記載のポリヌクレオチドを含む、組換え発現ベクター。
- その細胞表面膜において請求項1に記載のEGFRvIII特異的CARを発現する、単離された操作された免疫細胞。
- 免疫細胞が健常ドナーから得られる、請求項7に記載の単離された操作された免疫細胞。
- 免疫細胞が患者から得られる、請求項7に記載の単離された操作された免疫細胞。
- 請求項7に記載の単離された操作された免疫細胞を含む、医薬組成物。
- EGFRvIII結合ドメインが一本鎖可変断片(scFv)である、請求項1に記載のEGFRvIII特異的CAR。
- CARが、配列番号53〜57および59〜60からなる群から選択されるアミノ酸配列を含む、請求項1に記載のEGFRvIII特異的CAR。
- CARが、配列番号53のアミノ酸配列を含む、請求項12に記載のEGFRvIII特異的CAR。
- CARが、配列番号54のアミノ酸配列を含む、請求項12に記載のEGFRvIII特異的CAR。
- CARが、配列番号55のアミノ酸配列を含む、請求項12に記載のEGFRvIII特異的CAR。
- CARが、配列番号56のアミノ酸配列を含む、請求項12に記載のEGFRvIII特異的CAR。
- CARが、配列番号57のアミノ酸配列を含む、請求項12に記載のEGFRvIII特異的CAR。
- CARが、配列番号59のアミノ酸配列を含む、請求項12に記載のEGFRvIII特異的CAR。
- CARが、配列番号60のアミノ酸配列を含む、請求項12に記載のEGFRvIII特異的CAR。
- 請求項2〜4および11〜19のいずれか1項に記載のEGFRvIII特異的CARをコードする核酸配列を含む、単離ポリヌクレオチド。
- 請求項20に記載のポリヌクレオチドを含む、単離発現ベクター。
- その細胞表面膜において請求項2〜4および11〜19のいずれか1項に記載のEGFRvIII特異的CARを発現する、単離された操作された免疫細胞。
- 請求項20のポリヌクレオチドまたは請求項21の発現ベクターを含む、単離された操作された免疫細胞。
- 免疫細胞が健常ドナーから得られる、請求項22または23に記載の単離された操作された免疫細胞。
- 免疫細胞が患者から得られる、請求項22または23に記載の単離された操作された免疫細胞。
- 請求項22〜25のいずれか1項に記載の単離された操作された免疫細胞を含む、医薬組成物。
- 医薬としての使用のための、請求項7〜9および22〜25のいずれか1項に記載の単離された操作された免疫細胞。
- 請求項7〜9および22〜25のいずれか1項に記載の単離された操作された免疫細胞の、がんを治療するための医薬の製造のための使用。
- がんが多形神経膠芽腫、未分化星状細胞腫、巨細胞膠芽腫、膠肉腫、未分化乏突起神経膠腫、未分化上衣腫、未分化乏突起星状細胞腫、脈絡嚢癌腫、未分化神経節膠腫、松果体芽細胞腫、松果体細胞腫、髄膜腫、髄上皮腫、上衣芽細胞腫、髄芽細胞腫、テント上原始神経外胚葉腫瘍、非定型奇形腫/ラブドイド腫瘍、混合膠腫、頭頚部がん、非小細胞肺がん、乳がん、卵巣がん、前立腺がん、髄芽細胞腫、結腸直腸がん、肛門がん、子宮頸部がん、腎臓がん、皮膚がん、膵臓がん、肝臓がん、膀胱がん、胃がん、甲状腺がん、中皮腫、子宮がん、リンパ腫および白血病からなる群から選択される、EGFRvIII関連がんである、請求項28に記載の使用。
- 免疫細胞を操作する方法であって、
a.免疫細胞を用意し;そして
b.少なくとも1つの請求項1〜4および11〜19のいずれか1項に記載のEGFRvIII特異的CARを細胞の表面において発現させること、
を含む方法。
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