KR102696265B1 - 식물 발현 시스템을 이용한 알팔파 모자이크 바이러스 유사 입자 제조 방법 및 이의 활용 - Google Patents
식물 발현 시스템을 이용한 알팔파 모자이크 바이러스 유사 입자 제조 방법 및 이의 활용 Download PDFInfo
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- KR102696265B1 KR102696265B1 KR1020210025902A KR20210025902A KR102696265B1 KR 102696265 B1 KR102696265 B1 KR 102696265B1 KR 1020210025902 A KR1020210025902 A KR 1020210025902A KR 20210025902 A KR20210025902 A KR 20210025902A KR 102696265 B1 KR102696265 B1 KR 102696265B1
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 식물체에서 각기 다른 여섯 가지 식물발현 벡터에 의한 재조합 AMV 캡시드 단백질의 발현을 웨스턴 블롯팅(western blotting)으로 확인한 결과를 나타낸 도면이다.
도 3은 본 발명의 일 실시예에 따른 재조합 AMV 캡시드 단백질의 친화성 크로마토그래피를 이용한 분리정제 결과를 SDS-PAGE와 웨스턴 블롯팅으로 나타낸 도면이다.
도 4는 본 발명에서 분리정제된 재조합 AMV 캡시드 단백질을 크기 배제 크로마토그래피를 이용하여 삼량체(trimeric)형태에서 VLP 형태로 제작하는 조건을 확인하는 결과를 나타내는 도면이다. 도 4a는 실시예 4의 제1 완충용액으로 평형화된 크기 배제 크로마토그래피 결과를 나타낸다. 도 4b는 실시예 4의 제2 완충용액으로 평형화된 크기 배제 크로마토그래피 결과를 나타낸다.
도 5는 본 발명에서 분리정제된 재조합 AMV VLP를 다양한 pH 조건을 처리하여 투과전자현미경으로 촬영한 이미지를 나타낸 도면이다.
도 6은 본 발명에서 분리정제된 재조합 AMV VLP를 극초저온 전자현미경(Cryo-electron microscopy)을 이용하여 촬영한 이미지를 나타낸 도면이다. 도 6a는 AMV VLP의 2D(two-dimensional) class average를 나타낸다. 도 6b는 2D class average를 바탕으로 구성한, AMV VLP의 20면체 3D 구조를 나타낸다. 도 6c는 AMV VLP의 3차 구조를 바탕으로 분해능을 측정한 결과를 나타낸다. 도 6d는 AMV VLP의 이미지 프로세싱과 모델빌딩의 진행절차를 나타낸 흐름도이다.
도 7은 본 발명에서 극초저온 전자현미경(Cryo-electron microscopy) 및 구조분석 소프트웨어를 이용하여 재조합 AMV VLP의 전체적인 구조, 단량체(monomer)의 구조 및 아미노산들의 위치를 분석한 도면이다. 도 7a는 Cryo-EM map의 Local resolution을, 도 7b는 atomic model의 B-factor를 나타낸다. 도 7c는 재조합 AMV 캡시드 단량체의 구조를 나타낸다. 도 7d는 재조합 AMV 캡시드 단량체 내의 아미노산의 서열(상단) 및 고분해능으로 분석된 대표적인 아미노산 잔기의 electron density map(하단)을 나타낸다.
Claims (24)
- 서열번호 2로 표시되는 아미노산 서열을 포함하는 루비스코 트랜짓 펩타이드(Rubisco transit peptide)를 코딩하는 폴리뉴클레오타이드, 및 서열번호 3으로 표시되는 염기서열로 이루어진, AMV(Alfalfa mosaic virus) 캡시드 단백질을 코딩하는 폴리뉴클레오타이드를 포함하는, 식물체 발현용 재조합 벡터.
- 제1항에 있어서,
상기 루비스코 트랜짓 펩타이드를 코딩하는 폴리뉴클레오타이드는 서열번호 1로 표시되는 염기서열을 포함하는 것인, 식물체 발현용 재조합 벡터.
- 제1항에 있어서,
상기 재조합 벡터는, 서열번호 6으로 표시되는 아미노산 서열을 포함하는 폴리히스티딘-태그(polyhistidine-tag)를 코딩하는 폴리뉴클레오타이드를 더 포함하는 것인, 식물체 발현용 재조합 벡터.
- 제3항에 있어서,
상기 폴리히스티딘-태그는 상기 AMV 캡시드 단백질을 코딩하는 폴리뉴클레오타이드의 C-term 말단 또는 N-term 말단에 연결된 것인, 식물체 발현용 재조합 벡터.
- 제3항에 있어서,
상기 재조합 벡터는 프로모터와 종결자(terminator) 사이에,
(1) 루비스코 트랜짓 펩타이드를 코딩하는 폴리뉴클레오타이드, AMV 캡시드 단백질을 코딩하는 폴리뉴클레오타이드, 및 폴리히스티딘-태그를 코딩하는 폴리뉴클레오타이드가 순차적으로 연결되어 있거나; 또는
(2) 루비스코 트랜짓 펩타이드를 코딩하는 폴리뉴클레오타이드, 폴리히스티딘-태그를 코딩하는 폴리뉴클레오타이드, 및 AMV 캡시드 단백질을 코딩하는 폴리뉴클레오타이드가 순차적으로 연결되어 있는, 식물체 발현용 재조합 벡터.
- 제1항 내지 제5항 중 어느 한 항의 재조합 벡터로 형질전환된, 형질전환 식물체.
- 하기 단계를 포함하는, 재조합 AMV 캡시드 단백질의 분리정제 방법:
(Step 1) 제1항 내지 제5항 중 어느 한 항의 재조합 벡터를 이용하여 식물체를 형질전환시키는 단계;
(Step 2) 상기 (Step 1) 단계에서 얻은 형질전환 식물체를 단백질 추출 완충용액과 혼합하여 식물체 혼합액을 제조하는 단계;
(Step 3) 상기 (Step 2) 단계에서 수득한 혼합액에서 식물 찌꺼기(debris)가 제거된 혼합액을 회수하는 단계;
(Step 4) 상기 (Step 3) 단계에서 수득한 혼합액을 아가로스(agarose)가 충전된 컬럼에 주입하여, 폴리히스티딘-태그가 연결된 재조합 AMV 캡시드 단백질을 상기 아가로스에 흡착시키는 단계;
(Step 5) 세척 용액을 컬럼에 주입하여 세척하는 단계; 및
(Step 6) 용출 용액을 컬럼에 주입하여 아가로스에 흡착된 상기 재조합 단백질을 용출시키는 단계;
여기서, 상기 (Step 2) 단계의 단백질 추출 완충용액은 10 내지 100mM 트리스(Tris), 100 내지 1500mM 염화마그네슘(MgCl2), 0.01 내지 1% 트리톤(Triton) X-100(polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenylether), 및 5 내지 300mM 이미다졸(Imidazole)을 포함하고, pH는 7 내지 9이다.
- 삭제
- 제7항에 있어서,
상기 아가로스는 Ni-IDA(Iminodiacetic acid) 아가로스인 것인, 분리정제 방법.
- 제7항에 있어서,
상기 (Step 1) 단계는 재조합 벡터가 도입된 박테리아를 이용하여 식물체를 형질전환시키는 것인, 분리정제 방법.
- 제10항에 있어서,
상기 박테리아는 아그로박테리움 투메파시엔스(Agrobacterium tumefaciens)인 것인, 분리정제 방법.
- 제7항에 있어서,
상기 식물체는 애기장대, 대두, 담배, 가지, 고추, 감자, 토마토, 배추, 양배추, 및 상추로 이루어진 군으로부터 선택되는 쌍자엽 식물; 또는 벼, 보리, 밀, 호밀, 옥수수, 사탕수수, 귀리, 및 양파로 이루어진 군으로부터 선택되는 단자엽 식물인 것인, 분리정제 방법.
- 제7항에 따른 분리정제 방법에 의해 용출된, 재조합 AMV 캡시드 단백질.
- 하기 단계를 포함하는, 재조합 AMV 바이러스-유사 입자(virus-like particle; VLP) 제조방법:
(Step 1) 제1항 내지 제5항 중 어느 한 항의 재조합 벡터를 이용하여 식물체를 형질전환시키는 단계;
(Step 2) 상기 (Step 1) 단계에서 얻은 형질전환 식물체를 단백질 추출 완충용액과 혼합하여 식물체 혼합액을 제조하는 단계;
(Step 3) 상기 (Step 2) 단계에서 수득한 혼합액에서 식물 찌꺼기(debris)가 제거된 혼합액을 회수하는 단계;
(Step 4) 상기 (Step 3) 단계에서 수득한 혼합액을 아가로스(agarose)가 충전된 컬럼에 주입하여, 폴리히스티딘-태그가 연결된 재조합 AMV 캡시드 단백질을 상기 아가로스에 흡착시키는 단계;
(Step 5) 세척 용액을 컬럼에 주입하여 세척하는 단계;
(Step 6) 용출 용액을 컬럼에 주입하여 아가로스에 흡착된 상기 재조합 단백질을 용출시키는 단계; 및
(Step 7) 상기 (Step 6) 단계에서 용출된 단백질이 포함된 단백질 추출 완충용액을 바이러스-유사 입자 조립용 완충용액으로 교체함으로써 바이러스-유사 입자로 제조하는 단계;
여기서, 상기 (Step 7) 단계의 바이러스-유사 입자 조립용 완충용액은 20 내지 100mM 피로인산나트륨(Sodium pyrophosphate), 및 100 내지 1000mM 염화나트륨(NaCl)을 포함하고, pH는 6.9 내지 7.5이다.
- 삭제
- 삭제
- 제14항에 있어서,
자가조립된 재조합 AMV 바이러스-유사 입자를 정제하기 위해 크기 배제 크로마토그래피를 수행하는 단계를 더 포함하는, 제조방법.
- 제14항에 따른 제조방법에 의해 제조된 재조합 AMV 바이러스-유사 입자로서, 하기 특징 중 하나 이상을 만족하는 것인, 재조합 AMV 바이러스-유사 입자:
(1) 크기-배제 크로마토그래피에서 분자량이 약 2,000kDa 이상으로 나타남;
(2) 음성염색법으로 염색 후 투과전자현미경으로 관찰했을 때 지름이 10nm 이상 40nm 이하임; 또는
(3) 초저온투과전자현미경으로 관찰하고 3D 구조(3-dimensional structure)를 재구성(reconstruction)했을 때, 3개의 복합체(trimeric complex)가 규칙적인 배열을 통해 총 20개가 조립된 구형의 VLP(3x20)임.
- 하기의 단계를 포함하는, 재조합 AMV 바이러스-유사 입자를 포함하는 백신 조성물의 제조방법:
(Step 1) 제1항 내지 제5항 중 어느 한 항의 재조합 벡터를 이용하여 식물체를 형질전환시키는 단계;
(Step 2) 상기 (Step 1) 단계에서 얻은 형질전환 식물체로부터 재조합 AMV 캡시드 단백질을 분리정제하는 단계;
(Step 3) 20 내지 100mM 피로인산나트륨(Sodium pyrophosphate), 및 100 내지 1000mM 염화나트륨(NaCl)을 포함하고, pH가 6.9 내지 7.5인 바이러스-유사 입자 조립용 완충용액을 이용하여, 상기 (Step 2) 단계에서 수득한 재조합 AMV 캡시드 단백질을 바이러스-유사 입자로 제조하는 단계;
(Step 4) 상기 (Step 3) 단계에서 수득한 바이러스-유사 입자를 극초저온 전자현미경을 이용하여 3D 구조를 규명하는 단계; 및
(Step 5) 상기 바이러스-유사 입자를 포함하는 백신 조성물을 제조하는 단계.
- 제19항에 있어서,
상기 백신 조성물의 제조방법은 애주번트(adjuvant)를 첨가하는 단계를 더 포함하는 것을 특징으로 하는, 제조방법.
- 제19항에 있어서,
하기 특징 중 하나를 만족하는 것을 특징으로 하는, 제조방법:
(1) 상기 (Step 1) 단계의 재조합 벡터는 항원 단백질을 코딩하는 폴리뉴클레오타이드를 더 포함하며, 상기 항원 단백질을 코딩하는 폴리뉴클레오타이드는 AMV 캡시드 단백질을 코딩하는 폴리뉴클레오타이드의 N-term 말단에 연결됨; 또는
(2) 상기 (Step 5)는 바이러스-유사 입자의 표면에 항원 단백질을 결합(conjugation)시키는 단계를 포함함.
- 제19항에 따른 제조방법에 의해 제조된, 백신 조성물.
- 하기의 단계를 포함하는, 재조합 AMV 바이러스-유사 입자를 포함하는 약물 전달체의 제조방법:
(Step 1) 제1항 내지 제5항 중 어느 한 항의 재조합 벡터를 이용하여 식물체를 형질전환시키는 단계;
(Step 2) 상기 (Step 1) 단계에서 얻은 형질전환 식물체로부터 재조합 AMV 캡시드 단백질을 분리정제하는 단계;
(Step 3) 상기 (Step 2) 단계에서 수득한 재조합 AMV 캡시드 단백질 용액을 제1 완충용액으로 교체하여 재조합 AMV 캡시드 단백질 삼량체를 제조하는 단계, 여기서, 상기 제1 완충용액은 10 내지 100mM Tris, 및 100 내지 500mM 염화나트륨을 포함하고, pH는 6.9 내지 7.5임;
(Step 4) 상기 (Step 3)의 용액에 약물을 첨가하는 단계; 및
(Step 5) 상기 (Step 4)의 제1 완충용액을 제2 완충용액으로 교체하여 바이러스-유사 입자를 제조하는 단계, 여기서, 상기 제2 완충용액은 20 내지 100mM 피로인산나트륨, 및 100 내지 1000mM 염화나트륨을 포함하고, pH는 6.9 내지 7.5임. - 삭제
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020210025902A KR102696265B1 (ko) | 2021-02-25 | 2021-02-25 | 식물 발현 시스템을 이용한 알팔파 모자이크 바이러스 유사 입자 제조 방법 및 이의 활용 |
US18/279,038 US20240293335A1 (en) | 2021-02-25 | 2022-02-11 | Method for producing alfalfa mosaic virus-like particles using plant expression system and use thereof |
CN202280017166.7A CN116917488A (zh) | 2021-02-25 | 2022-02-11 | 利用植物表达系统的苜蓿花叶病毒样颗粒制备方法及其运用 |
EP22759951.1A EP4299748A4 (en) | 2021-02-25 | 2022-02-11 | Method for producing alfalfa mosaic virus-like particles using a plant expression system and use thereof |
PCT/KR2022/002106 WO2022182033A1 (ko) | 2021-02-25 | 2022-02-11 | 식물 발현 시스템을 이용한 알팔파 모자이크 바이러스 유사 입자 제조 방법 및 이의 활용 |
JP2023552114A JP2024508475A (ja) | 2021-02-25 | 2022-02-11 | 植物発現システムを用いたアルファルファモザイクウイルス様粒子の製造方法およびその活用 |
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US6042832A (en) * | 1996-08-28 | 2000-03-28 | Thomas Jefferson University | Polypeptides fused with alfalfa mosaic virus or ilarvirus capsid proteins |
AUPR155800A0 (en) * | 2000-11-17 | 2000-12-14 | Agriculture Victoria Services Pty Ltd | Method of enhancing virus-resistance in plants and producing virus-immune plants |
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