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Molecular Basis of Psychedelic-Induced Plasticity: Alternative Splicing as a Cell-Type Specific Regulator of Synaptic Plasticity
Molecular Basis of Psychedelic-Induced Plasticity: Alternative Splicing as a Cell-Type Spe...
Molecular Basis of Psychedelic-Induced Plasticity: Alternative Splicing as a Cell-Type Specific Regulator of Synaptic Plasticity

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103546
ISBN  
9798288863639
DDC  
574
저자명  
Hsiao, Michael.
서명/저자  
Molecular Basis of Psychedelic-Induced Plasticity: Alternative Splicing as a Cell-Type Specific Regulator of Synaptic Plasticity
발행사항  
[Sl] : University of California, Berkeley, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
122 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
주기사항  
Advisor: Gomez, Andrea M.
학위논문주기  
Thesis (Ph.D.)--University of California, Berkeley, 2025.
초록/해제  
요약Synaptic plasticity enables long-lasting changes in neuronal activity and connectivity, forming the molecular and cellular basis of learning and memory. While activity-dependent gene transcription is essential for plasticity, the role of post-transcriptional processes such as alternative splicing remains less well understood. Psychedelics, as potent serotonergic neuromodulators, have been shown to enhance plasticity in both humans and rodents, leading to persistent changes in cognitive flexibility, emotional regulation, and social cognition. Despite growing interest in their therapeutic potential, the molecular mechanisms underlying psychedelic-induced plasticity remain unclear.In the first part of this thesis, I investigate the gene expression and alternative splicing changes associated with psychedelic-induced plasticity in the mouse prefrontal cortex (PFC) following administration of the psychedelics 2,5-dimethoxy-4-iodoamphetamine (DOI) and psilocybin. Using RiboTag sequencing across multiple time points, I identify persistent, cell type-specific changes in both gene expression and alternative splicing, with parvalbumin (PV) interneurons exhibiting the most robust molecular and functional responses. Notably, persistent transcriptional changes are dominated by shifts in alternative splicing rather than overall gene expression, revealing a previously underappreciated layer of gene regulation in long-term plasticity. These splicing changes are linked to alterations in extracellular matrix composition, synaptic physiology, and intrinsic properties in PV interneurons.In the second part of this thesis, I explore the molecular mechanisms that govern alternative splicing, focusing on Nrxn1, a cell adhesion molecule with broad isoform diversity. I develop a CRISPR-based epigenome editing platform for precise modulation of gene expression in neurons both in vitro and in vivo. Through targeted manipulation of Nrxn1 promoters, I uncover a mechanism by which transcriptional interference and coupling of alternative promoters and splicing coordinate cell type-specific expression of Nrxn1 isoforms in the mouse hippocampus. These findings demonstrate the intricate linkage between transcriptional and post-transcriptional processes in gene regulation.
일반주제명  
Molecular biology
일반주제명  
Neurosciences
일반주제명  
Genetics
키워드  
Alternative splicing
키워드  
Gene regulation
키워드  
Neurexin
키워드  
Psychedelics
키워드  
Synaptic plasticity
기타저자  
University of California, Berkeley Molecular & Cell Biology
기본자료저록  
Dissertations Abstracts International. 87-01B.
전자적 위치 및 접속  
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MARC

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■035    ▼a(MiAaPQ)AAI32041321
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a574
■1001  ▼aHsiao,  Michael.
■24510▼aMolecular  Basis  of  Psychedelic-Induced  Plasticity:  Alternative  Splicing  as  a  Cell-Type  Specific  Regulator  of  Synaptic  Plasticity
■260    ▼a[Sl]▼bUniversity  of  California,  Berkeley▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a122  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-01,  Section:  B.
■500    ▼aAdvisor:  Gomez,  Andrea  M.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Berkeley,  2025.
■520    ▼aSynaptic  plasticity  enables  long-lasting  changes  in  neuronal  activity  and  connectivity,  forming  the  molecular  and  cellular  basis  of  learning  and  memory.  While  activity-dependent  gene  transcription  is  essential  for  plasticity,  the  role  of  post-transcriptional  processes  such  as  alternative  splicing  remains  less  well  understood.  Psychedelics,  as  potent  serotonergic  neuromodulators,  have  been  shown  to  enhance  plasticity  in  both  humans  and  rodents,  leading  to  persistent  changes  in  cognitive  flexibility,  emotional  regulation,  and  social  cognition.  Despite  growing  interest  in  their  therapeutic  potential,  the  molecular  mechanisms  underlying  psychedelic-induced  plasticity  remain  unclear.In  the  first  part  of  this  thesis,  I  investigate  the  gene  expression  and  alternative  splicing  changes  associated  with  psychedelic-induced  plasticity  in  the  mouse  prefrontal  cortex  (PFC)  following  administration  of  the  psychedelics  2,5-dimethoxy-4-iodoamphetamine  (DOI)  and  psilocybin.  Using  RiboTag  sequencing  across  multiple  time  points,  I  identify  persistent,  cell  type-specific  changes  in  both  gene  expression  and  alternative  splicing,  with  parvalbumin  (PV)  interneurons  exhibiting  the  most  robust  molecular  and  functional  responses.  Notably,  persistent  transcriptional  changes  are  dominated  by  shifts  in  alternative  splicing  rather  than  overall  gene  expression,  revealing  a  previously  underappreciated  layer  of  gene  regulation  in  long-term  plasticity.  These  splicing  changes  are  linked  to  alterations  in  extracellular  matrix  composition,  synaptic  physiology,  and  intrinsic  properties  in  PV  interneurons.In  the  second  part  of  this  thesis,  I  explore  the  molecular  mechanisms  that  govern  alternative  splicing,  focusing  on  Nrxn1,  a  cell  adhesion  molecule  with  broad  isoform  diversity.  I  develop  a  CRISPR-based  epigenome  editing  platform  for  precise  modulation  of  gene  expression  in  neurons  both  in  vitro  and  in  vivo.  Through  targeted  manipulation  of  Nrxn1  promoters,  I  uncover  a  mechanism  by  which  transcriptional  interference  and  coupling  of  alternative  promoters  and  splicing  coordinate  cell  type-specific  expression  of  Nrxn1  isoforms  in  the  mouse  hippocampus.  These  findings  demonstrate  the  intricate  linkage  between  transcriptional  and  post-transcriptional  processes  in  gene  regulation.
■590    ▼aSchool  code:  0028.
■650  4▼aMolecular  biology
■650  4▼aNeurosciences
■650  4▼aGenetics
■653    ▼aAlternative  splicing
■653    ▼aGene  regulation
■653    ▼aNeurexin
■653    ▼aPsychedelics
■653    ▼aSynaptic  plasticity
■690    ▼a0307
■690    ▼a0317
■690    ▼a0369
■71020▼aUniversity  of  California,  Berkeley▼bMolecular  &  Cell  Biology.
■7730  ▼tDissertations  Abstracts  International▼g87-01B.
■790    ▼a0028
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357685▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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