JP6002354B1 - Ang2抗体 - Google Patents
Ang2抗体 Download PDFInfo
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- JP6002354B1 JP6002354B1 JP2016515959A JP2016515959A JP6002354B1 JP 6002354 B1 JP6002354 B1 JP 6002354B1 JP 2016515959 A JP2016515959 A JP 2016515959A JP 2016515959 A JP2016515959 A JP 2016515959A JP 6002354 B1 JP6002354 B1 JP 6002354B1
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Abstract
Description
重鎖および軽鎖の可変領域のポリペプチド、抗体Aの完全な重鎖および軽鎖アミノ酸配列、およびそれをコードするヌクレオチド配列を、下記で「アミノ酸およびヌクレオチド配列」と題した節において示す。さらに、抗体Aの軽鎖、重鎖、軽鎖可変領域、および重鎖可変領域に関する配列番号を、表1に示す。
結合キネティクス、親和性、および選択性
ヒト、カニクイザル(cynomolgous)、マウス、ウサギおよびイヌなどの可溶性Ang2の複数種に関する結合キネティクス、親和性、および選択性は、当技術分野において既知の方法に従ってBIAcore(登録商標) 2000、BIAcore(登録商標) 3000、またはBIAcore(登録商標) T100(GE HealthCare)などの表面プラズモン共鳴(SPR)バイオセンサーの使用によって25℃または37℃で本発明の抗体について測定してよい。
KinExA 3200解析装置(Sapidyne Inst.Inc.)を用いて結合キネティクスを測定してよい。簡単に言えば、ヒトAng2は、セファロースビーズに共有結合する場合がありかつ遊離Mabのビーズへの結合がKinExA 3200上で検出され得る。KDを測定するために、段階的に減少して希釈したヒトAng2と共にMab(1pM、2pM、または5pM)を含有する個々の試験管を、1mg/mlのBSAを含有するPBS中で25℃で数日間インキュベーションしてよい。インキュベーション後、それぞれ平衡した試料における遊離Mabを測定してよい。Kd値は、KinExAソフトウェアでN曲線分析を用いて決定してよい。
本発明の抗体によるヒトAng2のその受容体ヒトTie2への結合のブロックは、固相のin vitroでのELISAアッセイにおいて測定してよい。
本発明の抗体によるin vitroでのヒトTie−2の細胞ベースの阻害は、Ang1およびAng2が結合して用量依存的方法でヒトTie−2リン酸化を誘導する細胞アッセイにおいて測定してよい。in vitroでの細胞アッセイを、用量依存的方法においてAng2を選択的中和するがTie−2受容体のAng1媒介リン酸化は中和しない抗体Aの能力を評価するために用いてよい。Ang2抗体、Ang1/2交差反応性の抗体、および対照ヒトIgG4 PAAアイソタイプ抗体が、それぞれ陽性および陰性対照として含まれていてよい。
Ang2抗体によるin vivoでの生理学的血管新生の抑制を、マウス網膜における血管構築のモデルにおいて測定してよい。前述のアッセイを、マウス網膜における生理学的血管新生を抑制する本発明の抗体の能力を調査するために用いてよい。
Ang2抗体およびVEGFR2抗体と併用したAng2抗体の抗血管新生効果を、PC3前立腺がん異種移植モデルにおいて評価してよい。
本発明の抗体の有効性は、in vivoでの異種移植モデルによって測定してよい。DC101(抗−VEGFR2マウス抗体)、抗体Aおよびその併用の抗腫瘍有効性は、皮下トリプルネガティブ患者由来乳がんモデル(EL1997)および皮下卵巣異種移植モデル(SKOV3x.1)において評価してよい。担腫瘍マウスを、週2回の頻度で腹腔内注射によって、PBSで希釈した抗体で処置してよい。腫瘍成長は、処置の過程中に週2回の腫瘍体積の三次元キャリパー測定によって判定してよい。
アミノ酸およびヌクレオチド配列
配列番号1 (抗体AのHCVR)
QVQLVQSGAEVKKPGASVKVSCKASGYSFTDYNMVWVRQAPGQGLEWMGYIDPYNGGTGYNQKFEGRVTMTTDTSTSTAYMELRSLRSDDTAVYYCARTRDRYDVWYFDVWGQGTLVTVSS
配列番号2 (抗体AのHC)
QVQLVQSGAEVKKPGASVKVSCKASGYSFTDYNMVWVRQAPGQGLEWMGYIDPYNGGTGYNQKFEGRVTMTTDTSTSTAYMELRSLRSDDTAVYYCARTRDRYDVWYFDVWGQGTLVTVSSASTKGPSVFPLAPCSRSTSESTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTKTYTCNVDHKPSNTKVDKRVESKYGPPCPPCPAPEAAGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSQEDPEVQFNWYVDGVEVHNAKTKPREEQFNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKGLPSSIEKTISKAKGQPREPQVYTLPPSQEEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSRLTVDKSRWQEGNVFSCSVMHEALHNHYTQKSLSLSLG
配列番号3 (抗体AのLCVR)
DIQMTQSPSSVSASVGDRVTITCKASQDVYIAVAWYQQKPGKAPKLLIYWASTRDTGVPSRFSGSGSGTDFTLTISSLQPEDFATYYCHQYSSYPPTFGGGTKVEIK
配列番号4 (抗体AのLC)
DIQMTQSPSSVSASVGDRVTITCKASQDVYIAVAWYQQKPGKAPKLLIYWASTRDTGVPSRFSGSGSGTDFTLTISSLQPEDFATYYCHQYSSYPPTFGGGTKVEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC
配列番号5 (抗体AのLCのDNA)
GACATCCAGATGACCCAGTCTCCATCTTCCGTGTCTGCATCTGTAGGAGACAGAGTCACCATCACTTGTAAGGCCAGTCAGGATGTGTATATTGCTGTAGCCTGGTATCAGCAGAAACCAGGGAAAGCCCCTAAGCTCCTGATCTATTGGGCATCCACCCGGGACACTGGGGTCCCATCAAGGTTCAGCGGCAGTGGATCTGGGACAGATTTCACTCTCACCATCAGCAGCCTGCAGCCTGAAGATTTTGCAACTTACTATTGTCACCAATATAGCAGCTATCCTCCTACGTTCGGCGGAGGGACCAAGGTGGAGATCAAACGGACTGTGGCTGCACCATCTGTCTTCATCTTCCCGCCATCTGATGAGCAGTTGAAATCTGGAACTGCCTCTGTTGTGTGCCTGCTGAATAACTTCTATCCCAGAGAGGCCAAAGTACAGTGGAAGGTGGATAACGCCCTCCAATCGGGTAACTCCCAGGAGAGTGTCACAGAGCAGGACAGCAAGGACAGCACCTACAGCCTCAGCAGCACCCTGACGCTGAGCAAAGCAGACTACGAGAAACACAAAGTCTACGCCTGCGAAGTCACCCATCAGGGCCTGAGCTCGCCCGTCACAAAGAGCTTCAACAGGGGAGAGTGC
配列番号6 (抗体AのHCのDNA)
CAGGTTCAGCTGGTGCAGTCTGGAGCTGAGGTGAAGAAGCCTGGGGCCTCAGTGAAGGTCTCCTGCAAGGCTTCTGGTTACTCATTCACTGACTACAACATGGTGTGGGTGCGACAGGCCCCTGGACAAGGGCTTGAGTGGATGGGATATATTGATCCTTACAATGGTGGTACTGGCTACAACCAGAAGTTCGAGGGCAGAGTCACCATGACCACAGACACATCCACGAGCACAGCCTACATGGAGCTGAGGAGCCTGAGATCTGACGACACGGCCGTGTATTACTGTGCGAGAACGAGGGATAGGTACGACGTCTGGTACTTCGATGTCTGGGGCCAGGGAACCCTGGTCACCGTCTCCTCAGCCTCCACCAAGGGCCCATCGGTCTTCCCGCTAGCGCCCTGCTCCAGGAGCACCTCCGAGAGCACAGCCGCCCTGGGCTGCCTGGTCAAGGACTACTTCCCCGAACCGGTGACGGTGTCGTGGAACTCAGGCGCCCTGACCAGCGGCGTGCACACCTTCCCGGCTGTCCTACAGTCCTCAGGACTCTACTCCCTCAGCAGCGTGGTGACCGTGCCCTCCAGCAGCTTGGGCACGAAGACCTACACCTGCAACGTAGATCACAAGCCCAGCAACACCAAGGTGGACAAGAGAGTTGAGTCCAAATATGGTCCCCCATGCCCACCCTGCCCAGCACCTGAGGCCGCCGGGGGACCATCAGTCTTCCTGTTCCCCCCAAAACCCAAGGACACTCTCATGATCTCCCGGACCCCTGAGGTCACGTGCGTGGTGGTGGACGTGAGCCAGGAAGACCCCGAGGTCCAGTTCAACTGGTACGTGGATGGCGTGGAGGTGCATAATGCCAAGACAAAGCCGCGGGAGGAGCAGTTCAACAGCACGTACCGTGTGGTCAGCGTCCTCACCGTCCTGCACCAGGACTGGCTGAACGGCAAGGAGTACAAGTGCAAGGTCTCCAACAAAGGCCTCCCGTCCTCCATCGAGAAAACCATCTCCAAAGCCAAAGGGCAGCCCCGAGAGCCACAGGTGTACACCCTGCCCCCATCCCAGGAGGAGATGACCAAGAACCAGGTCAGCCTGACCTGCCTGGTCAAAGGCTTCTACCCCAGCGACATCGCCGTGGAGTGGGAAAGCAATGGGCAGCCGGAGAACAACTACAAGACCACGCCTCCCGTGCTGGACTCCGACGGCTCCTTCTTCCTCTACAGCAGGCTAACCGTGGACAAGAGCAGGTGGCAGGAGGGGAATGTCTTCTCATGCTCCGTGATGCATGAGGCTCTGCACAACCACTACACACAGAAGAGCCTCTCCCTGTCTCTGGGT
配列番号7 (ヒトAng2)
YNNFRKSMDSIGKKQYQVQHGSCSYTFLLPEMDNCRSSSSPYVSNAVQRDAPLEYDDSVQRLQVLENIMENNTQWLMKLENYIQDNMKKEMVEIQQNAVQNQTAVMIEIGTNLLNQTAEQTRKLTDVEAQVLNQTTRLELQLLEHSLSTNKLEKQILDQTSEINKLQDKNSFLEKKVLAMEDKHIIQLQSIKEEKDQLQVLVSKQNSIIEELEKKIVTATVNNSVLQKQQHDLMETVNNLLTMMSTSNSAKDPTVAKEEQISFRDCAEVFKSGHTTNGIYTLTFPNSTEEIKAYCDMEAGGGGWTIIQRREDGSVDFQRTWKEYKVGFGNPSGEYWLGNEFVSQLTNQQRYVLKIHLKDWEGNEAYSLYEHFYLSSEELNYRIHLKGLTGTAGKISSISQPGNDFSTKDGDNDKCICKCSQMLTGGWWFDACGPSNLNGMYYPQRQNTNKFNGIKWYYWKGSGYSLKATTMMIRPADF
配列番号8 (抗体AのLCDR1)
KASQDVYIAVA
配列番号9 (抗体AのLCDR2)
YWASTRDT
配列番号10 (抗体AのLCDR3)
HQYSSYPPT
配列番号11 (抗体AのHCDR1)
GYSFTDYNMV
配列番号12 (抗体AのHCDR2)
YIDPYNGGTGYNQKFEG
配列番号13 (抗体AのHCDR3)
ARTRDRYDVWYFDV
[1]
軽鎖(LC)および重鎖(HC)を含む、ヒトAng2(配列番号7)に結合する抗体であって、前記軽鎖が、それぞれ、アミノ酸配列KASQDVYIAVA(配列番号8)、YWASTRDT(配列番号9)、およびHQYSSYPPT(配列番号10)からなる軽鎖相補性決定領域LCDR1、LCDR2、およびLCDR3を含み、かつ前記重鎖が、それぞれ、アミノ酸配列GYSFTDYNMV(配列番号11)、YIDPYNGGTGYNQKFEG(配列番号12)、およびARTRDRYDVWYFDV(配列番号13)からなる重鎖相補性決定領域HCDR1、HCDR2、およびHCDR3を含む、抗体。
[2]
軽鎖(LC)および重鎖(HC)を含む、抗体であって、前記軽鎖が、軽鎖可変領域(LCVR)を含みかつ前記重鎖が、重鎖可変領域(HCVR)を含み、前記LCVRが、配列番号3において与えられるアミノ酸配列を有し、かつ前記HCVRが、配列番号1において与えられるアミノ酸配列を有する、抗体。
[3]
前記LCが、配列番号4において与えられるアミノ酸配列を有し、かつ前記HCが、配列番号2において与えられるアミノ酸配列を有する、前記[1]または[2]のいずれか一つに記載の抗体。
[4]
それぞれの軽鎖が、配列番号4において与えられるアミノ酸配列を有し、かつそれぞれの重鎖が、配列番号2において与えられるアミノ酸配列を有する、2つの軽鎖および2つの重鎖を含む、前記[1]〜[3]のいずれか一つに記載の抗体。
[5]
前記重鎖のうちの1つが、前記軽鎖のうちの1つと鎖間ジスルフィド結合を形成し、かつ他方の重鎖が、他方の軽鎖と鎖間ジスルフィド結合を形成し、かつ前記重鎖のうちの1つが、他方の重鎖と2つの鎖間ジスルフィド結合を形成する、前記[1]〜[4]のいずれか一つに記載の抗体。
[6]
前記抗体が、グリコシル化されている、前記[1]〜[5]のいずれか一つに記載の抗体。
[7]
配列番号4のアミノ酸配列を有するポリペプチドをコードするポリヌクレオチド配列および配列番号2のアミノ酸配列を有するポリペプチドをコードするポリヌクレオチド配列を含むDNA分子を含む哺乳動物細胞であって、前記細胞が、配列番号4のアミノ酸配列を有する軽鎖および配列番号2のアミノ酸配列を有する重鎖を含む抗体を発現できる、哺乳動物細胞。
[8]
配列番号4のアミノ酸配列を有する軽鎖および配列番号2のアミノ酸配列を有する重鎖を含む抗体を産生するためのプロセスであって、前記抗体が発現されるような条件下で前記[7]に記載の哺乳動物細胞を培養するステップ、および前記発現された抗体を回収するステップを含む、プロセス。
[9]
前記[8]に記載のプロセスによって産生される抗体。
[10]
前記[1]〜[6]または[9]のいずれか一つに記載の抗体、および許容可能な担体、希釈剤、または賦形剤を含む、医薬組成物。
[11]
有効量の前記[1]〜[6]または[9]のいずれか一つに記載の抗体を、それを必要とする患者に投与するステップを含む、がんを治療する方法。
[12]
前記がんが、乳がん、卵巣がん、胃がん、大腸がん、または肝細胞がんである、前記[11]に記載の方法。
[13]
有効量のラムシルマブを同時に、別々に、または連続的に投与するステップをさらに含む、前記[11]または[12]に記載の方法。
[14]
療法における使用のための、前記[1]〜[6]または[9]のいずれか一つに記載の抗体。
[15]
前記がんの治療における使用のための、前記[1]〜[6]または[9]のいずれか一つに記載の抗体。
[16]
前記がんが、乳がん、卵巣がん、胃がん、大腸がん、または肝細胞がんである、前記[15]に記載の使用のための抗体。
[17]
前記がんの治療における使用のための、ラムシルマブとの同時、別々、または連続した併用における前記[1]〜[6]または[9]のいずれか一つに記載の抗体。
[18]
前記がんが、乳がん、卵巣がん、胃がん、大腸がん、または肝細胞がんである、前記[17]に記載の使用のための併用。
Claims (5)
- 軽鎖(LC)および重鎖(HC)を含む、ヒトAng2(配列番号7)に結合する抗体であって、前記軽鎖が、それぞれ、アミノ酸配列KASQDVYIAVA(配列番号8)、YWASTRDT(配列番号9)、およびHQYSSYPPT(配列番号10)からなる軽鎖相補性決定領域LCDR1、LCDR2、およびLCDR3を含み、かつ前記重鎖が、それぞれ、アミノ酸配列GYSFTDYNMV(配列番号11)、YIDPYNGGTGYNQKFEG(配列番号12)、およびARTRDRYDVWYFDV(配列番号13)からなる重鎖相補性決定領域HCDR1、HCDR2、およびHCDR3を含む、抗体。
- 軽鎖(LC)および重鎖(HC)を含む、抗体であって、前記軽鎖が、軽鎖可変領域(LCVR)を含みかつ前記重鎖が、重鎖可変領域(HCVR)を含み、前記LCVRが、配列番号3において与えられるアミノ酸配列を有し、かつ前記HCVRが、配列番号1において与えられるアミノ酸配列を有する、抗体。
- 前記LCが、配列番号4において与えられるアミノ酸配列を有し、かつ前記HCが、配列番号2において与えられるアミノ酸配列を有する、請求項1または2のいずれか一項に記載の抗体。
- 配列番号4のアミノ酸配列を有するポリペプチドをコードするポリヌクレオチド配列および配列番号2のアミノ酸配列を有するポリペプチドをコードするポリヌクレオチド配列を含むDNA分子を含む哺乳動物細胞であって、前記細胞が、配列番号4のアミノ酸配列を有する軽鎖および配列番号2のアミノ酸配列を有する重鎖を含む抗体を発現できる、哺乳動物細胞。
- 配列番号4のアミノ酸配列を有する軽鎖および配列番号2のアミノ酸配列を有する重鎖を含む抗体を産生するためのプロセスであって、前記抗体が発現されるような条件下で請求項4に記載の哺乳動物細胞を培養するステップ、および前記発現された抗体を回収するステップを含む、プロセス。
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US20150329627A1 (en) | 2015-11-19 |
MX2016015151A (es) | 2017-03-07 |
WO2015179166A1 (en) | 2015-11-26 |
BR112016023718A2 (pt) | 2017-10-17 |
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AU2015264550A1 (en) | 2016-10-27 |
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AP2016009553A0 (en) | 2016-11-30 |
KR20160145158A (ko) | 2016-12-19 |
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