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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 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
- Gene regulation
- 키워드
- Neurexin
- 키워드
- Psychedelics
- 기타저자
- University of California, Berkeley Molecular & Cell Biology
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103546
■006m o d
■007cr#unu||||||||
■020 ▼a9798288863639
■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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