본문

서브메뉴

Long Range Regulation of Transcription Scales with Genomic Distance in a Gene Specific Manner
Long Range Regulation of Transcription Scales with Genomic Distance in a Gene Specific Man...
Long Range Regulation of Transcription Scales with Genomic Distance in a Gene Specific Manner

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105615
ISBN  
9798265428509
DDC  
500
저자명  
Jensen, Christina Loreen.
서명/저자  
Long Range Regulation of Transcription Scales with Genomic Distance in a Gene Specific Manner
발행사항  
[Sl] : Stanford University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
81 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Includes supplementary digital materials.
주기사항  
Advisor: Wysocka, Joanna.
학위논문주기  
Thesis (Ph.D.)--Stanford University, 2024.
초록/해제  
요약The precise timing and level of transcription during development is largely mediated by non-coding regions of the genome known as enhancers. Enhancers are sequences of DNA that harbor multiple binding sites for general and tissue-specific transcription factors (TFs). Binding of these TFs is accompanied by the recruitment of cofactors that are able to communicate at long ranges with target promoters. However, despite their importance to biology and development, how enhancers communicate with their target promoters remains poorly understood.This works builds on the finding that direct recruitment of cofactors, such as p300, or strong synthetic activators, such as VPR, is sufficient to bypass the requirement for sequence specific TFs and achieve long range regulation of expression. We first used a CRISPRa tiling screen to ask whether any site to which activators are recruited can function as an enhancer, focusing on the Prdm8-Fgf5 locus. We quickly learned that this approach is highly limited by the ability of dCas9-VPR to effectively bind all target sites.We next validated that CARGO-VPR, an approach utilizing 6 proximal gRNAs to recruit dCas9-VPR, enables effective dCas9-VPR binding at arbitrary genomic sites. We then utilize CARGO-VPR across the Prdm8-Fgf5 locus in mESCs. We demonstrate that transcription levels are highly dependent on distance between activator recruitment site and the target promoter. Interestingly, we also observe that this relationship is highly gene-specific.We examined chromatin structure using optical reconstruction of chromatin architecture (ORCA) as well as published HiC and determined that 3D conformation of the locus is not explanatory of the observed gene-specific differences in expression decay profiles. We instead find that the gene-specific distance-expression decay profile is remarkably robust to multiple genetic and epigenetic perturbations.
일반주제명  
Nature
일반주제명  
CRISPR
일반주제명  
Gene expression
일반주제명  
Communication
일반주제명  
Genome editing
일반주제명  
Dissection
일반주제명  
Stem cells
일반주제명  
Transcription factors
일반주제명  
Bioinformatics
일반주제명  
Cellular biology
일반주제명  
Genetics
기타저자  
Stanford University.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2024        us                              c    eng  d
■001000017360759
■00520260202105615
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798265428509
■035    ▼a(MiAaPQ)AAI32316448
■035    ▼a(MiAaPQ)Stanfordhs606rk9588
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a500
■1001  ▼aJensen,  Christina  Loreen.
■24510▼aLong  Range  Regulation  of  Transcription  Scales  with  Genomic  Distance  in  a  Gene  Specific  Manner
■260    ▼a[Sl]▼bStanford  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a81  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aIncludes  supplementary  digital  materials.
■500    ▼aAdvisor:  Wysocka,  Joanna.
■5021  ▼aThesis  (Ph.D.)--Stanford  University,  2024.
■520    ▼aThe  precise  timing  and  level  of  transcription  during  development  is  largely  mediated  by  non-coding  regions  of  the  genome  known  as  enhancers.  Enhancers  are  sequences  of  DNA  that  harbor  multiple  binding  sites  for  general  and  tissue-specific  transcription  factors  (TFs).  Binding  of  these  TFs  is  accompanied  by  the  recruitment  of  cofactors  that  are  able  to  communicate  at  long  ranges  with  target  promoters.  However,  despite  their  importance  to  biology  and  development,  how  enhancers  communicate  with  their  target  promoters  remains  poorly  understood.This  works  builds  on  the  finding  that  direct  recruitment  of  cofactors,  such  as  p300,  or  strong  synthetic  activators,  such  as  VPR,  is  sufficient  to  bypass  the  requirement  for  sequence  specific  TFs  and  achieve  long  range  regulation  of  expression.  We  first  used  a  CRISPRa  tiling  screen  to  ask  whether  any  site  to  which  activators  are  recruited  can  function  as  an  enhancer,  focusing  on  the  Prdm8-Fgf5  locus.  We  quickly  learned  that  this  approach  is  highly  limited  by  the  ability  of  dCas9-VPR  to  effectively  bind  all  target  sites.We  next  validated  that  CARGO-VPR,  an  approach  utilizing  6  proximal  gRNAs  to  recruit  dCas9-VPR,  enables  effective  dCas9-VPR  binding  at  arbitrary  genomic  sites.  We  then  utilize  CARGO-VPR  across  the  Prdm8-Fgf5  locus  in  mESCs.  We  demonstrate  that  transcription  levels  are  highly  dependent  on  distance  between  activator  recruitment  site  and  the  target  promoter.  Interestingly,  we  also  observe  that  this  relationship  is  highly  gene-specific.We  examined  chromatin  structure  using  optical  reconstruction  of  chromatin  architecture  (ORCA)  as  well  as  published  HiC  and  determined  that  3D  conformation  of  the  locus  is  not  explanatory  of  the  observed  gene-specific  differences  in  expression  decay  profiles.  We  instead  find  that  the  gene-specific  distance-expression  decay  profile  is  remarkably  robust  to  multiple  genetic  and  epigenetic  perturbations.
■590    ▼aSchool  code:  0212.
■650  4▼aNature
■650  4▼aCRISPR
■650  4▼aGene  expression
■650  4▼aCommunication
■650  4▼aGenome  editing
■650  4▼aDissection
■650  4▼aStem  cells
■650  4▼aTranscription  factors
■650  4▼aBioinformatics
■650  4▼aCellular  biology
■650  4▼aGenetics
■690    ▼a0459
■690    ▼a0715
■690    ▼a0379
■690    ▼a0369
■71020▼aStanford  University.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0212
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360759▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF17933 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.