KR20220165747A - 표적 rna의 편집방법 - Google Patents
표적 rna의 편집방법 Download PDFInfo
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Abstract
Description
(a) DYW:PG 형,(b) DYW:WW 형 및(c) DYW:KP 형 도메인의 계통수를 FastTree를 이용하여 작성하였다. DYW:PG 도메인은 소엽류에서 유래한 DYW:PG 단백질을 바탕으로 설계하였다. DYW:WW 및 DYW:KP 도메인을 설계하기 위해서 선택한 단백질 계통군(분기군, clade)을 검은 선으로 나타내었다. 계통수는 iTOL(참조: Letunic, I. and Bork, P.(2016) Nucleic Acids Res. 44 W242-245)을 사용하여 가시화하였고, 빨강은 이끼류(hornwort), 녹색은 소엽류(lycophyte), 파랑색은 양치식물(fern) 유래의 단백질을 나타낸다.
[도 2] 본 발명에서 설계한 PPR 단백질의 구성
(a) PPR 단백질은 N-말단에 티오레독신(thioredoxin), His-태그 및 TEV 위치, 그에 이어 P 또는 PLS 모티프로 구성된 PPR 어레이, 마지막으로 DYW 도메인(DYW:PG, DYW:WW 또는 DYW:KP)을 포함한다. PPR 단백질의 표적서열(RNA 편집부위를 포함)은 종결 코돈의 하류에 삽입하였다.
(b) P, P1, L1, S1 및 P2 모티프 내의 RNA 인식에 관련된 4번째와 ii번째 아미노산. L2, S2, E1 및 E2의 4번째와 ii번째 아미노산은 CLB19의 것과 같다(참조: Chateigner-Boutin, AL, et al.(2008). Plant J. 56 590-602).
[도 3] 대장균을 이용한 RNA 편집검정(RNA editing assay) 결과
(a) 각 PPR-DYW의 DNA 상에서 표적염기(C 또는 T).
(b) PPR-DYW:PG 및 WW의 C-to-U RNA 편집활성과 (c) PPR-DYW:KP의 U-to-C RNA 편집활성을 나타낸다. 3회 독립하여 수행한 실험결과 중 1개를 예로서 나타내었다. (d) C-to-U 및 (e) U-to-C RNA 편집효율(editing efficiency)을 3회 측정한 평균치(단, P-DYW:KP는 2회). 에러 바는 표준편차를 나타낸다.
[도 4] 선발한 각 DYW 도메인 계통 군의 아미노산의 출현빈도
[도 4a] (a) DYW:PG, WebLogo에 의하여 작성한 시퀀스 로고(sequence logo)로 가시화하였다. 도 4b 및 도 4c에서도 동일하다.
[도 4b] (b) DYW:WW
[도 4c] (c) DYW:KP
[도 5] HEK293T 세포에서의 RNA 편집활성(editing activity, C to U 또는 U to C). PLS 형에 PG1 또는 WW1 도메인(a) 또는 KP1 도메인(b)을 융합하였을 때의 표적부위의 서열결정 결과. 3회의 독립된 실험에서 RNA 편집활성(c).
막대 그래프는 평균을 나타내고, 각 점은 3회의 실험에서의 RNA 편집활성을 나타낸다. 좌측의 막대 그래프는 C to U 편집활성, 오른쪽 막대 그래프는 U to C 편집활성을 나타낸다.
[도 6] 도메인 스와핑(domain swapping)에 의한 KP 도메인 성능 향상
KP1의 Active site(HxExnCxxCH)를 포함하는 중앙부분을 남기고, 전후 도메인에 대해 WW1 도메인과 스와핑한 키메라 KP1a(chimeric KP1a)의 RNA 편집활성에 대해 조사하였다. 도메인 스와핑의 모식도(a), 실제 RNA 편집활성(b,c).
[도 7] KP 도메인 변이체의 RNA 편집활성 측정
KP1, KP2, KP3, KP4의 대장균에서의 RNA 편집활성(a)과 HEK293T에서의 RNA 편집활성(b), KP5 내지 KP23의 HEK293T에서의 RNA 편집활성(c).
[도 8] PG 도메인 변이체의 RNA 편집활성 측정
PG1, PG2의 대장균에서의 RNA 편집활성(a)과 HEK293T에서의 RNA 편집활성(b). PG3 내지 PG13의 HEK293T에서의 RNA 편집활성(c)
[도 9] WW 도메인 변이체의 RNA 편집활성 측정
WW1, WW2의 대장균에서의 RNA 편집활성(a)과 HEK293T에서의 RNA 편집활성(b). WW3 내지 WW14의 HEK293T에서의 RNA 편집활성(c)
[도 10] 사람 미토콘드리아 RNA 편집
표적서열 정보(a). RNA 편집활성(b,c)
| PG 박스를 포함하는 영역 | HxE 영역 | CxxCH 영역 | DYW | |
| DYW:PG | xa1PGxa2SWIExa3-xa16HP | HxaaE | Cxa17xa18CH | DYW |
| DYW:WW | xb1PGxb2SWWTDxb3-xb16HP | HxbbE | Cxb17xb18CH | DYW |
| DYW:KP | KPAxc1Axc2IExc3 | HxccE | Cxc4xc5CH | xc6xc7xc8 |
| 서열명칭 | 유 래 | 동일성 |
| - PYHZ-2068577-R | Isoetes, 소엽류 | 78% |
| - ENQF-2003735-R | Lycopodium annotinum, 소엽류 |
| - ANON-2000164-R | Leiosporoceros dussii, 이끼류 |
84% |
| - ANON-2000163-R | ||
| - ANON-2004532-F | ||
| - ANON-2001227-F |
| - UWOD-2140463-R |
Plagiogyria japonica, 양치식물 | 86% |
| DYW:PG | 서열번호 | |
| P2 | VSWNAMIAAYAQHGHGKEALQLFQQMQQEGVKPSE | 17 |
| L2 | VTFTSILSACSHAGLVDEGHHYFESMSPDYGITPRV | 18 |
| S2 | EHYGCMVDLLGRAGRLDEAEDLIKSMPFQPNV | 19 |
| E1 | VVWGTLLGACRVHGDVERGERAAERILELDPESA | 20 |
| E2 | APYVLLSNIYAAAGRWDEAAKVRKLMKERGVKK | 21 |
| DYW | EPGCSWIEVNNKVHEFVAGDKSHPQTKEIYAELERLSKQMKEAGYVPDTKFVLHDVEEEEKEQLLCYHSEKLAIAFGLISTPPGTPLRIIKNLRVCGDCHTATKFISKIVGREIVVRDANRFHHFKDGVCSCGDYW | 1 |
| DYW:WW | 서열번호 | |
| P2 | VTWNALIAGYARQGESDLVFHLLERMRQEGIQPSG | 22 |
| L2 | VTFTSVLTVCSHAGLVDEGQKYFDAMSEDYGITPRI | 23 |
| S2 | EHYGCMVDLLGRAGQMDEAVAMVEKMPFQPNL | 24 |
| E1 | VTWGTLLGACRKWNNVEIGRHAFECAVRLDEKSA | 25 |
| E2 | AAYVLMSNIYADAHMWEERDKIQAMRKNARAWK | 26 |
| DYW | KPGQSWWTDTGGIVHTFVVGDTKHPQSQDIYAKLKDLYVKMKEEGYVPHLDCVLWDISDDEKEDALCGHSEKLAIACALINTPPGTPIRIVKNLRVCDDCHKAIALISKIEGRNIICRDASRFHNYKDGKCSCGDYW | 2 |
| DYW:KP | 서열번호 | |
| P2 | VAWNSMIKGYGMNHEGKMAVQCFEDMQKQGVKPSA | 27 |
| L2 | VTFTCLLTACSHASLVSEGQEYFKMMREEYGIAPRV | 28 |
| S2 | EHYGCMVDLLARSGHLYEAEKFLEMLCPPNE | 29 |
| E1 | GTWGALLSACKTYGEVELGLRCFQQLVQLNPESA | 30 |
| E2 | AWYVLMADIYAGAGRWDDAYRIEELRKHAGAKK | 31 |
| DYW | KPASALIEVNKKVHEFVVGNNQSEEISAMLKSLNSRMKEEGHVPNLDLVLKPVSDEEKEAALCEHAEKLAIAFGLLNTPQGQTLRVTKNLRMCNDCHNASKIISKIERREIILRDDCCIHHFKDGLCSCGDMF | 3 |
Claims (10)
- 하기 a, b, c 및 bc 중 어느 하나의 폴리펩티드로 구성된 DYW 도메인을 포함하는 인공 DYW 단백질을 표적 RNA에 적용하는 것을 특징으로 하는 표적 RNA를 편집하는 방법(각 서열에서, x는 임의의 아미노산을 나타내고, …는 임의의 폴리펩티드 단편을 나타낸다):
a. xa1PGxa2SWIExa3-xa16HP…HxaaE…Cxa17xa18CH…DYW를 가지고 서열번호: 1의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드;
b. xb1PGxb2SWWTDxb3-xb16HP…HxbbE…Cxb17xb18CH…DYW를 가지고 서열번호: 2의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드;
c. KPAxc1Axc2IExc3…HxccE…Cxc4xc5CH…xc6xc7xc8을 가지고 서열번호: 3의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드; 및,
bc. xb1PGxb2SWWTDxb3-xb16HP…HxccE…Cxc4xc5CH…Dxbc1xbc2를 가지고 서열번호: 2의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드.
- 하기 a, b, c 및 bc 중 어느 하나의 폴리펩티드로 구성된 DYW 도메인:
a. xa1PGxa2SWIExa3-xa16HP…HxaaE…Cxa17xa18CH…DYW를 가지고 서열번호: 1의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드;
b. xb1PGxb2SWWTDxb3-xb16HP…HxbbE…Cxb17xb18CH…DYW를 가지고 서열번호: 2의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드;
c. KPAxc1Axc2IExc…HxccE…Cxc4xc5CH…xc6xc7xc8을 가지고 서열번호: 3의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드; 및,
bc. xb1PGxb2SWWTDxb3-xb16HP…HxccE…Cxc4xc5CH…Dxbc1xbc2를 가지고 서열번호: 2의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드.
- 적어도 1개의 PPR 모티프를 포함하고 표적 RNA에 서열 특이적으로 결합가능한 RNA 결합 도메인 및 제2항에 기재된 DYW 도메인을 포함하는 DYW 단백질.
- 제2항에 있어서,
RNA 결합 도메인이 PLS형인 것을 특징으로하는
DYW 단백질.
- 하기 c 또는 bc의 폴리펩티드로 구성된 DYW 도메인을 표적 RNA에 적용하여 편집 표적 U를 C로 변환하는 공정을 포함하는 표적 RNA를 편집하는 방법:
c. KPAxc1Axc2IExc…HxccE…Cxc4xc5CH…xc6xc7xc8을 가지고 서열번호: 3의 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드; 및,
bc. xb1PGxb2SWWTDxb3-xb16HP…HxccE…Cxc4xc5CH…Dxbc1xbc2를 가지고 서열번호: 2의 90 서열과 최소한 40%의 서열 동일성을 가지며, C-to-U/U-to-C 편집활성을 가지는 폴리펩티드.
- 제5항에 있어서,
DYW 도메인이 적어도 하나의 PPR 모티프를 포함하고 PPR-code 규칙에 따라 표적 RNA에 서열 특이적으로 결합가능한 RNA 결합 도메인에 융합되는 것을 특징으로 하는 방법.
- 제2항에 기재된 DYW 도메인을 포함하는 진핵세포에서 RNA를 편집하기 위한 조성물.
- 제2항에 기재된 DYW 도메인 또는 제3항 또는 제4항에 기재된 DYW 단백질을 암호화하는 핵산.
- 제8항에 기재된 핵산을 포함하는 벡터.
- 제9항에 기재된 벡터를 포함하는 세포(사람의 세포는 제외).
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