KR101443473B1 - Vh 결합 영역의 분리 방법 - Google Patents
Vh 결합 영역의 분리 방법 Download PDFInfo
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Abstract
Description
도 2A 및 2B는 결합 영역의 상이한 배치와 또 다른 결합영역에 의한 이펙터 부분의 대체를 보여준다. A. 동형이합체가 생산되는 바람직한 옵션. 생성물의 분리가 필요없음. B. 동형이합체와 이형이합체 혼합물이 생성. 생성물의 분리가 필요.
도 3은 이펙터 쇄와 회합된 중쇄 폴리펩티드 복합체를 보여준다. 이펙터 쇄는 상보적인 결합 영역(CBD)과 이펙터 부분(EM)을 포함한다. 상보적 결합 영역(CBD)은 중쇄의 EM(이펙터 부분)에 의해 인식된다. CBD는 이펙터, 예를 들면 효소, 톡신, 킬레이터, 영상제 또는 이들의 일부에 융합된다. 이펙터 쇄는 중쇄로부터 별도로 합성될 수 있다.
도 4는 J쇄와 회합된 2가의 분비성 IgA를 보여준다.
도 5는 J쇄를 통해 어셈블링된 다가의 중쇄만의 IgM-유사 폴리펩티드 복합체를 보여준다.
도 6은 IgG 유전자좌를 발현하는 형질전환 마우스의 생성을 위한 전략을 보여주고, 항원 노출의 결과로서 중쇄만의 항체들과 VH 영역의 작용적 생성을 위한 전략을 보여준다.
도 7은 IgM 유전자좌를 발현하는 형질전환 마우스의 생성 전략을 보여주고, 항원 노출의 결과로서 중쇄만의 항체와 VH 영역의 작용적 생성을 위한 전략을 보여준다.
도 8은 IgA 유전자좌를 발현하는 형질전환 마우스의 생성 전략을 보여주고, 항원 노출의 결과로서 중쇄만의 항체와 VH 영역의 작용적 생성을 위한 전략을 보여준다.
도 9는 PCR 생산물의 서열 정렬은 CH1을 제거하기 위해 카멜리드 스플라이스 변이를 갖는 불변 영역을 가지는 유전자좌를 포함하는 마우스로부터의 인간 Cγ2 프라이머와 조합된 VHH1과 VHH2 프라이머를 사용하여 골수 cDNA로부터 얻어졌다.
도 10~13은 VH/카멜리드 VH(VHH) 구조물의 구조이다. 1-n은 VH 유전자 또는 D 또는 J 단편의 어떤 수(number)를 의미한다. 인간 유전자좌의 정상적인 상보물은 51개의 V 유전자, 25개의 작용적 D 단편(+ 2개의 비작용적 D 단편) 및 6개의 J 단편이다. (IgM에 대한) Cμ 또는 (IgE에 대한) Cε 영역에서, H 영역은 없고, CH3과 M1 사이에는 부가적인 CH4 엑손이 있다. VH 유전자(들)은 공개된 영역에서 설명된 바와 같이 용해도를 제공하기 위하여 변이되었다.
바람직하게, VH 유전자, D와 J 단편 및 C 엑손은 인간이지만, 카멜리드를 포함하는 어떤 다른 종들로부터 일 수 있다. 후자의 경우에, 카멜리드 VH(VHH) 유전자는 그들이 자연적으로 가용성이기 때문에 변이될 수 없다.
도 14는 대장균 HSP70에 대한 중쇄만의 IgG 생성을 위한 마우스 면역화 스케쥴과 항체 검정을 나타낸다.
도 15는 형질전환 마우스 유래의 췌장 세포에 대한 플로우 사이토메트릭 분석(Flow cytometric analysis)과 면역조직화학 결과(immunohistochemistry results)이다.
도 16은 DKTP 면역화된 형질전환 마우스의 ELISA 분석의 결과와, 결과의 항체 라이브러리의 서열 분석을 보여준다.
도 17은 면역화된 형질전환 마우스에서 니타난 체세포 변이와 VDJ 재배열의 예를 보여준다.
도 18은 A5 항체를 포함하는 반응 플라즈미드로써 트랜스펙션된 Tet-on 세포주의 면역염색 검정의 결과를 나타낸다.
도 19는 형질전환 마우스 계통 혈청의 웨스턴 블랏 분석(Western blot analysis)의 결과를 나타낸다.
도 20은 IgM + IgG 유전자좌 마우스에 의해 생산된 인간 단일쇄 IgM과 혼합된 인간 IgM의 크기 분별을 나타낸다.
도 21은 인간 TNFα에 대한 단일쇄 IgM과 IgG 항체의 ELISA 분석의 결과를 나타낸다.
도 22는 HSP70과 αGAG에 대한 결합 친화성을 지닌 동형이합체 플라즈미드의 생성을 위한 전략을 보여준다.
도 23은 CHO 세포에서 동형이합체 폴리펩티드 복합체의 작용적 발현을 나타낸다.
도 24는 αGAG와 HSP70에 대한 동형이합체 폴리펩티드 복합체의 작용적 결합과 동시성을 나타낸다. 2가 이특이적 항체의 대표적인 도해. 제2의 가변 영역(VHH2는 gag를 향하고 있음)은 다른 특성(VHH1은 HSP70를 향하고 있음)을 포함하는 중쇄만의 항체의 카복시 말단으로 클로닝된다. CH3와 VHH2 사이에 있는 힌지 영역은 링커 영역에 의해 대체되었고, 여기에서 모든 시스테인은 프롤린(화살표)에 의해 대체되었다. Gag로써 ELISA 플레이트를 코팅하고, PBS 중의 1% 밀크/ 1% BSA로써 블로킹하고, 처음에는 디아바디 배지(1:2로 희석), 다음으로 BI21 세포 용해물(HSP 70을 포함)(1:2로 희석)로 항온처리했다. 용리액은 시료완충액=2-머캡토에탄올로 단백질에 결합되었고, 8%겔상으로 흘려보냈다. Gag, 디아바디 및 HSP70에 대해 폴리/단일클론항체로 염색했다. α Gag: 토끼 폴리클로날/돼지 α 토끼-AP(청색). α HSP70: 단일클론/염소 α 인간 IgG-HRP(갈색). α 디아바디: 염소 α 인간 IgG-HRP(갈색). 레인 1: Gag/디아바디/BI21 세포 용해물. 레인 2: Gag/배지(디아바디 음성 대조군)/BI21. 레인 3: -밀크-BSA/디아바디/BI21. 레인 4: -밀크-BSA/배지/BI21. 레인 5: Gag/디아바디/-밀크-BSA. 레인 6: Gag/배지/-밀크-BSA.
도 25는 선택적으로 IgA 이펙터 기능을 가지는 이펙터 쇄와 회합된 동형이합체 폴리펩티드 복합체의 생성을 위한 전략을 보여준다.
도 26은 선택적으로 IgA 이펙터 기능을 가지는 이펙터 쇄와 회합된 동형이합체 폴리펩티드 복합체의 생성을 위한 전략을 보여준다.
Claims (18)
- 다음의 단계들을 포함하는, 항원특이적 VH 결합 영역을 생산하는 방법으로서, 상기 결합 영역은 용액 내에 존재하고, 생리학적 매질 중에서 활성인 것을 특징으로 하는 방법 :
(a) 이형 VH 중쇄 유전자좌를 발현하는 형질전환 설치류에 항원을 주입하는 단계;
(i) 상기 VH 중쇄 유전자좌는 적어도 하나의 자연적으로 발생하는 비카멜리드 VH 유전자 단편, 적어도 하나의 인간 D 유전자 단편, 적어도 하나의 인간 J 유전자 단편을 포함하는 가변 영역과 적어도 하나의 중쇄 불변영역을 포함하고;
(ii) 상기 이형 VH 중쇄 유전자좌의 각 불변 영역의 CH1 엑손이 결실되고;
(iii) VH 유전자 단편, D 유전자 단편 및 J 유전자 단편은 VDJ 코딩 서열을 형성하기 위해 재조합이 가능하며;
(iv) 발현시 상기 재조합 VH 중쇄 유전자좌는, 항원특이적 VH 결합 영역 및 CH1 영역이 결여된 불변 영역 이펙터를 포함하는, 용액 내에 존재하고, 생리학적 매질 중에서 활성인 중쇄만의 항체 형성이 가능하다;
(b) 목적하는 항원 특이적인 중쇄만의 항체를 발현하는 세포 또는 조직을 분리하는 단계;
(c) 상기 단계 (b)에서 분리된 세포 또는 조직으로부터 유래된 mRNA로부터 VH 결합 영역(들)을 암호화하는 서열을 클로닝하는 단계;
(d) 파아지 또는 유사한 라이브러리를 사용하여 클로닝된 서열에 의하여 코딩된 VH 결합 영역을 디스플레이하는 단계;
(e) 항원 특이적 VH 결합 영역(들)을 확인하는 단계; 및
(f) 세균류, 효모 또는 대체 발현 시스템에서 상기 VH 결합 영역(들)을 단독으로 또는 융합 단백질로서 발현시키는 단계. - 제 1항에 있어서, 상기 설치류에 대해 내생의 면역글로불린 중쇄 유전자좌는 결실 또는 사일런스되는 것을 특징으로 하는 방법.
- 제 2항에 있어서, 상기 설치류에 대해 내생의 면역글로불린 중쇄 및 경쇄 유전자좌는 결실 또는 사일런스되는 것을 특징으로 하는 방법.
- 제 1항에 있어서, 상기 VH 중쇄 유전자좌는 천연 인간 VH, D 및 J 유전자 단편들을 포함하는 것을 특징으로 하는 방법.
- 제 1항에 있어서, 상기 VH 중쇄 유전자좌는 하나 이상의 VH 유전자 단편, 하나 이상의 D 유전자 단편 및 하나 이상의 J 유전자 단편을 포함하는 것을 특징으로 하는 방법.
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| GB0511881A GB0511881D0 (en) | 2005-06-10 | 2005-06-10 | Binding molecules |
| PCT/GB2005/002892 WO2006008548A2 (en) | 2004-07-22 | 2005-07-22 | Binding molecules |
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2017
- 2017-08-11 CY CY20171100869T patent/CY1119561T1/el unknown
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2018
- 2018-04-16 US US15/953,622 patent/US10906970B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002085945A2 (en) * | 2001-04-24 | 2002-10-31 | Erasmus Universiteit Rotterdam | Vhh single heavy chain antibody and a method for its preparation in a mammal |
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