KR20150068942A - 시스테인 잔기를 포함하는 모티프가 결합된 변형항체, 상기 변형항체를 포함하는 변형항체-약물 접합체 및 그 제조방법 - Google Patents
시스테인 잔기를 포함하는 모티프가 결합된 변형항체, 상기 변형항체를 포함하는 변형항체-약물 접합체 및 그 제조방법 Download PDFInfo
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- KR20150068942A KR20150068942A KR1020150078850A KR20150078850A KR20150068942A KR 20150068942 A KR20150068942 A KR 20150068942A KR 1020150078850 A KR1020150078850 A KR 1020150078850A KR 20150078850 A KR20150078850 A KR 20150078850A KR 20150068942 A KR20150068942 A KR 20150068942A
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Abstract
본 발명에 따른 변형항체-약물 접합체(mADC, Antibody-Drug Conjugate)는 접합체에 포함된 항체의 항원에 대한 높은 특이성으로 인해 타겟 세포에 약물을 정확하게 전달할 수 있어, 치료효과를 높일 수 있으며, 또한 높은 효과에도 불구하고 독성으로 인해 사용이 제한적인 약물, 특히 항암제 등의 활용도를 제고할 수 있다.
또한, 본 발명은 상기 변형항체-약물 접합체를 이용한 질병, 특히 암의 치료용 조성물에 대한 것이다.
Description
도 2는 정제 후, HR-Cys의 형태를 western-blot으로 확인한 결과를 나타내는 도면(트라스트주맵 (오른쪽 2 개 레인)과 시스테인이 추가된 트라스트주맵 변이체(HR-Cys, 왼쪽 2 개 레인))
도 3은 HR-Cys-독소루비신 접합체의 결합여부를 UV-VIS 흡광도(A) 및 비환원 SDS-PAGE(B)로 확인한 결과를 나타내는 도면
도 4는 Her-M2(Cys) 항체 변이체와 형광 염료인 Alexa Fluor○○r488의 접합체인 Her-M2(Cys)-Alexa488을 제조한 후, (A) SDS-PAGE gel에서의 전기영동 결과 (B) 중쇄와 경쇄에 각각 결합한 Alexa488 염료의 상대적인 형광 세기를 분석한 결과를 나타내는 도면
도 5는 HER2 발현 BT-474 세포에서 세포증식도 분석(anti-proliferation MTS assay)을 통하여 HR-Cys-DOX의 세포성장억제 효과를 허셉틴, 허셉틴과 독소루비신 (doxorubicin) 1:2 혼합물, 그리고 독소루비신(doxorubicin)과 비교하여 확인한 결과를 나타내는 도면
도 6은 HER2 발현 SK-BR3 세포에서의 세포 증식도 분석 (anti-proliferation assay)를 통하여 허셉틴-MMAE 항체-약물 접합체인 HER-M2(Cys)-MMAE의 세포성장 억제 효과를 허셉틴과 비교하여 확인한 결과를 나타내는 도면.
도 7은 HER2 발현 SK-BR-3 세포에서 HR-Cys2-MMAE의 세포사멸 효과를 확인하기 위하여 처리 농도별 캐스패이즈(caspase) 활성화 현상을 허셉틴과 비교하여 관찰한 결과를 나타내는 도면
도 8은 HER2 발현 SK-BR3 세포에서의 세포사멸이 허셉틴 항체변이체에 접합된 MMAE에 의한 에포토시스(apoptosis) 효과를 확인하기 위하여 처리 농도별 캐스패이즈(caspase) 활성화 현상을 허셉틴과 비교하여 관찰한 결과를 나타내는 도면.
Claims (7)
- 모항체의 말단에 하기 구조식 (1)로 표시되는 시스테인 잔기를 포함하는 모티프가 결합된 것을 특징으로 하는 변형항체로,
Xa-[(MCys)n-Xbn]n 구조식 (1)
상기 구조식 (1)에서, (MCys)n는 시스테인 잔기를 포함하는 금속 이온 결합 모티프를 의미하고, Xa 및 Xbn는 서로 독립적으로 시스테인을 제외한 아미노산 잔기 0개 내지 20개로 구성된 펩티드를 의미하며, n은 1 내지 20의 정수를 의미하고,
상기 금속 이온 결합 모티프는 C-Q-C-Q-C-A-C 모티프, 막 단백질 ATP 분해 효소의 Ser-Pro-Cys 모티프, 또는 원형 구조를 가지는 금속이온 결합 펩타이드 모티프인 것을 특징으로 하는 변형항체.
- 제1항에 있어서, 상기 구조식 (1)로 표시되는 시스테인 잔기를 포함하는 모티프가 모항체의 중쇄 말단에 결합된 것을 특징으로 하는 변형항체.
- 제2항에 있어서, 상기 구조식 (1)로 표시되는 시스테인 잔기를 포함하는 모티프가 모항체의 중쇄 C-말단에 결합된 것을 특징으로 하는 변형항체.
- 제1항에 있어서, 상기 모항체는 모노클로날 항체, 이중특이적 항체, 키메라 항체, 인간 항체 및 인간화 항체로부터 하나 또는 둘 이상 선택하는 것을 특징으로 하는 변형항체.
- 제1항에 있어서, 상기 모항체는 IgA, IgD, IgE, IgG 및 IgM으로부터 선택되는 하나 이상의 것인 변형항체.
- 제1항에 있어서, 상기 모항체는 암 특이 항원, 세포 표면 수용체 단백질, 세포 표면 단백질, 막횡단 단백질, 신호전달 단백질, 세포생존 조절인자, 세포 증식 조절인자, 조직 발달 또는 분화와 연관된 분자, 림포카인, 사이토카인, 세포 주기 조절에 관련된 분자, 혈관형성에 관련된 분자, 또는 혈관신생에 관련된 분자에 대한 결합능과 특이성을 갖는 것을 특징으로 하는 변형항체.
- 제1항 내지 제6항 중 어느 한 항에 따른 변형항체에 약물이 결합된 변형항체-약물 접합체로서, 상기 모항체에 결합된 구조식 (1)로 표시되는 모티프(motif) 내의 시스테인 잔기의 티올기를 통해 약물이 결합되어 있는 것을 특징으로 하는 변형항체-약물 접합체.
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-
2013
- 2013-02-22 AU AU2013222935A patent/AU2013222935B2/en active Active
- 2013-02-22 EP EP13752075.5A patent/EP2818480B1/en active Active
- 2013-02-22 KR KR1020130018955A patent/KR101541764B1/ko active Active
- 2013-02-22 RU RU2014138626/10A patent/RU2582259C2/ru active
- 2013-02-22 WO PCT/KR2013/001417 patent/WO2013125891A1/ko not_active Ceased
- 2013-02-22 MX MX2014010054A patent/MX353608B/es active IP Right Grant
- 2013-02-22 JP JP2014558681A patent/JP6067754B2/ja active Active
- 2013-02-22 CN CN201380017477.4A patent/CN104220458B/zh active Active
- 2013-02-22 CA CA2864872A patent/CA2864872C/en active Active
- 2013-02-22 BR BR112014020697-0A patent/BR112014020697B1/pt active IP Right Grant
- 2013-02-22 US US14/380,068 patent/US9814782B2/en active Active
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2015
- 2015-06-03 KR KR1020150078850A patent/KR20150068942A/ko not_active Withdrawn
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2016
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Also Published As
| Publication number | Publication date |
|---|---|
| RU2582259C2 (ru) | 2016-04-20 |
| EP2818480A1 (en) | 2014-12-31 |
| KR20130097669A (ko) | 2013-09-03 |
| CN104220458A (zh) | 2014-12-17 |
| MX353608B (es) | 2018-01-19 |
| AU2013222935B2 (en) | 2016-03-10 |
| AU2013222935A1 (en) | 2014-10-16 |
| EP2818480B1 (en) | 2020-08-26 |
| CN104220458B (zh) | 2018-08-14 |
| CA2864872A1 (en) | 2013-08-29 |
| CA2864872C (en) | 2022-07-05 |
| KR101541764B1 (ko) | 2015-08-05 |
| RU2014138626A (ru) | 2016-04-20 |
| MX2014010054A (es) | 2015-05-11 |
| JP6067754B2 (ja) | 2017-01-25 |
| US20170119903A1 (en) | 2017-05-04 |
| BR112014020697B1 (pt) | 2024-01-09 |
| WO2013125891A1 (ko) | 2013-08-29 |
| US20160102148A1 (en) | 2016-04-14 |
| JP2015513541A (ja) | 2015-05-14 |
| EP2818480A4 (en) | 2015-10-07 |
| US9814782B2 (en) | 2017-11-14 |
| BR112014020697A2 (pt) | 2017-10-24 |
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