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Transcriptional and Post-Transcriptional Regulation of the Heat Shock Response
Transcriptional and Post-Transcriptional Regulation of the Heat Shock Response
Transcriptional and Post-Transcriptional Regulation of the Heat Shock Response

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105614
ISBN  
9798265427069
DDC  
612
저자명  
Tsuchida, Eduardo Tassoni.
서명/저자  
Transcriptional and Post-Transcriptional Regulation of the Heat Shock Response
발행사항  
[Sl] : Stanford University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
130 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Brandman, Onn.
학위논문주기  
Thesis (Ph.D.)--Stanford University, 2025.
초록/해제  
요약The heat shock response (HSR) is an adaptive gene expression program that controls the expression of molecular chaperones in the cell, driven by the activity of the conserved transcription factor Hsf1. The HSR is activated during stress conditions, such as elevated temperatures, nutrient deprivation, presence of proteotoxic drugs, and other stressors. Such stress conditions also lead to the formation of membrane-less biomolecular condensates that contain mRNA, such as stress granules or RNA condensates. However, the regulatory mechanisms that modulate transcriptional activation of the HSR and the role of these stress-induced RNA condensates in cell survival during stress remain poorly understood. In this dissertation, I describe my contributions to the development of a novel RNA-based screening technology, called ReporterSeq. ReporterSeq allows for quantitative measurements of transcriptional activity of a synthetic reporter responsive to Hsf1 combined with genetic perturbations via CRISPR interference. By dissecting a diverse set of stress conditions using ReporterSeq, I identified context-specific transcriptional regulators of the HSR. Additionally, I addressed post-transcriptional modulators of the HSR by investigating the transcriptome composition of RNA condensates and observing an escape from stress-induced transcripts from association to such condensates. I expanded on the ReporterSeq technology to develop FRep-Seq (Fractionation of ReporterSeq) to dissect genome-wide post-transcriptional modulators of transcript condensation during stress. Through FRep-Seq, I identified that the nucleoporin protein, Nup42, is required for promoting the escape of Hsf1-induced transcripts from associating into condensates and facilitating their export to the cytosol. In summary, the work in this dissertation addresses regulators of transcriptional activators of Hsf1, and how the Hsf1-driven transcripts can sustain chaperone protein production to ensure cellular survival and fitness.
일반주제명  
Physiology
일반주제명  
RNA polymerase
일반주제명  
Homeostasis
일반주제명  
Endoplasmic reticulum
일반주제명  
Protein folding
일반주제명  
Ribonucleic acid--RNA
일반주제명  
Chromosomes
일반주제명  
Insects
일반주제명  
Heat
일반주제명  
Genomes
일반주제명  
Phosphorylation
일반주제명  
Yeast
일반주제명  
Genes
일반주제명  
Heat shock proteins
일반주제명  
Exocrine glands
일반주제명  
Ethanol
일반주제명  
Transcription factors
일반주제명  
Oxidative stress
일반주제명  
Biochemistry
일반주제명  
Cellular biology
일반주제명  
Genetics
기타저자  
Stanford University.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

 008260126s2025        us                              c    eng  d
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■020    ▼a9798265427069
■035    ▼a(MiAaPQ)AAI32316433
■035    ▼a(MiAaPQ)Stanfordtd143tp5623
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a612
■1001  ▼aTsuchida,  Eduardo  Tassoni.
■24510▼aTranscriptional  and  Post-Transcriptional  Regulation  of  the  Heat  Shock  Response
■260    ▼a[Sl]▼bStanford  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a130  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Brandman,  Onn.
■5021  ▼aThesis  (Ph.D.)--Stanford  University,  2025.
■520    ▼aThe  heat  shock  response  (HSR)  is  an  adaptive  gene  expression  program  that  controls  the  expression  of  molecular  chaperones  in  the  cell,  driven  by  the  activity  of  the  conserved  transcription  factor  Hsf1.  The  HSR  is  activated  during  stress  conditions,  such  as  elevated  temperatures,  nutrient  deprivation,  presence  of  proteotoxic  drugs,  and  other  stressors.  Such  stress  conditions  also  lead  to  the  formation  of  membrane-less  biomolecular  condensates  that  contain  mRNA,  such  as  stress  granules  or  RNA  condensates.  However,  the  regulatory  mechanisms  that  modulate  transcriptional  activation  of  the  HSR  and  the  role  of  these  stress-induced  RNA  condensates  in  cell  survival  during  stress  remain  poorly  understood.  In  this  dissertation,  I  describe  my  contributions  to  the  development  of  a  novel  RNA-based  screening  technology,  called  ReporterSeq.  ReporterSeq  allows  for  quantitative  measurements  of  transcriptional  activity  of  a  synthetic  reporter  responsive  to  Hsf1  combined  with  genetic  perturbations  via  CRISPR  interference.  By  dissecting  a  diverse  set  of  stress  conditions  using  ReporterSeq,  I  identified  context-specific  transcriptional  regulators  of  the  HSR.  Additionally,  I  addressed  post-transcriptional  modulators  of  the  HSR  by  investigating  the  transcriptome  composition  of  RNA  condensates  and  observing  an  escape  from  stress-induced  transcripts  from  association  to  such  condensates.  I  expanded  on  the  ReporterSeq  technology  to  develop  FRep-Seq  (Fractionation  of  ReporterSeq)  to  dissect  genome-wide  post-transcriptional  modulators  of  transcript  condensation  during  stress.  Through  FRep-Seq,  I  identified  that  the  nucleoporin  protein,  Nup42,  is  required  for  promoting  the  escape  of  Hsf1-induced  transcripts  from  associating  into  condensates  and  facilitating  their  export  to  the  cytosol.  In  summary,  the  work  in  this  dissertation  addresses  regulators  of  transcriptional  activators  of  Hsf1,  and  how  the  Hsf1-driven  transcripts  can  sustain  chaperone  protein  production  to  ensure  cellular  survival  and  fitness.
■590    ▼aSchool  code:  0212.
■650  4▼aPhysiology
■650  4▼aRNA  polymerase
■650  4▼aHomeostasis
■650  4▼aEndoplasmic  reticulum
■650  4▼aProtein  folding
■650  4▼aRibonucleic  acid--RNA
■650  4▼aChromosomes
■650  4▼aInsects
■650  4▼aHeat
■650  4▼aGenomes
■650  4▼aPhosphorylation
■650  4▼aYeast
■650  4▼aGenes
■650  4▼aHeat  shock  proteins
■650  4▼aExocrine  glands
■650  4▼aEthanol
■650  4▼aTranscription  factors
■650  4▼aOxidative  stress
■650  4▼aBiochemistry
■650  4▼aCellular  biology
■650  4▼aGenetics
■690    ▼a0719
■690    ▼a0487
■690    ▼a0379
■690    ▼a0369
■71020▼aStanford  University.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0212
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360750▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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