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Coding Sequence Dependent mRNA Decay Regulation
Coding Sequence Dependent mRNA Decay Regulation
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151016
- ISBN
- 9798383565964
- DDC
- 575
- 저자명
- Musaev, Damir.
- 서명/저자
- Coding Sequence Dependent mRNA Decay Regulation
- 발행사항
- [Sl] : Yale University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 124 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
- 주기사항
- Advisor: Giraldez, Antonio J.
- 학위논문주기
- Thesis (Ph.D.)--Yale University, 2024.
- 초록/해제
- 요약Post-transcriptional mRNA regulation shapes gene expression, yet the full extent of cis-regulatory sequences and how translation shapes the regulation of these elements is poorly understood. To identify conserved cis-regulatory elements shaping mRNA stability, I analyzed the features associated with differential mRNA decay in two vertebrate systems: steady-state HEK293 cells and developing zebrafish embryos. I found that strength of translation initiation (Kozak score), uORF content, codon optimality, AU-rich elements, microRNA binding sites, and ORF length function combinatorially to regulate mRNA stability. Surprisingly, machine learning analysis identified ORF length as the most important conserved feature regulating mRNA decay. I found that mRNAs with long ORFs have lower translation efficiency, thus potentially more ribosome depleted regions. To find factors involved in targeting long ORFs to decay, I used yeast knockout screen that revealed Upf1 as a factor to target "poorly translated/untranslated" mRNA regions of long ORFs. Using a massive parallel reporter assay (MPRA) I show that Upf1 binds poorly translated and untranslated ORFs which are associated with higher decay rate, including mRNAs with uORFs and those with exposed ORFs after stop codons. Additionally, Upf1 knockdown stabilizes mRNAs with long ORFs or containing uORFs. My study emphasizes Upf1's converging role in surveilling mRNAs with exposed ORFs that are poorly translated including mRNAs with long ORFs, ORF-like 3'UTRs and mRNAs containing uORFs. I propose that Upf1 regulation of poorly/untranslated ORFs provides a unifying mechanism of surveillance in regulating mRNA stability and homeostasis in an EJC-independent NMD pathway that I term ORF Mediated Decay (OMD).
- 일반주제명
- Genetics
- 일반주제명
- Molecular biology
- 일반주제명
- Bioinformatics
- 일반주제명
- Biology
- 일반주제명
- Biochemistry
- 키워드
- Homeostasis
- 키워드
- MicroRNA
- 키워드
- NMD pathway
- 키워드
- ORF length
- 키워드
- Gene expression
- 기타저자
- Yale University Genetics
- 기본자료저록
- Dissertations Abstracts International. 86-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211151016
■006m o d
■007cr#unu||||||||
■020 ▼a9798383565964
■035 ▼a(MiAaPQ)AAI30995958
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a575
■1001 ▼aMusaev, Damir.
■24510▼aCoding Sequence Dependent mRNA Decay Regulation
■260 ▼a[Sl]▼bYale University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a124 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-02, Section: B.
■500 ▼aAdvisor: Giraldez, Antonio J.
■5021 ▼aThesis (Ph.D.)--Yale University, 2024.
■520 ▼aPost-transcriptional mRNA regulation shapes gene expression, yet the full extent of cis-regulatory sequences and how translation shapes the regulation of these elements is poorly understood. To identify conserved cis-regulatory elements shaping mRNA stability, I analyzed the features associated with differential mRNA decay in two vertebrate systems: steady-state HEK293 cells and developing zebrafish embryos. I found that strength of translation initiation (Kozak score), uORF content, codon optimality, AU-rich elements, microRNA binding sites, and ORF length function combinatorially to regulate mRNA stability. Surprisingly, machine learning analysis identified ORF length as the most important conserved feature regulating mRNA decay. I found that mRNAs with long ORFs have lower translation efficiency, thus potentially more ribosome depleted regions. To find factors involved in targeting long ORFs to decay, I used yeast knockout screen that revealed Upf1 as a factor to target "poorly translated/untranslated" mRNA regions of long ORFs. Using a massive parallel reporter assay (MPRA) I show that Upf1 binds poorly translated and untranslated ORFs which are associated with higher decay rate, including mRNAs with uORFs and those with exposed ORFs after stop codons. Additionally, Upf1 knockdown stabilizes mRNAs with long ORFs or containing uORFs. My study emphasizes Upf1's converging role in surveilling mRNAs with exposed ORFs that are poorly translated including mRNAs with long ORFs, ORF-like 3'UTRs and mRNAs containing uORFs. I propose that Upf1 regulation of poorly/untranslated ORFs provides a unifying mechanism of surveillance in regulating mRNA stability and homeostasis in an EJC-independent NMD pathway that I term ORF Mediated Decay (OMD).
■590 ▼aSchool code: 0265.
■650 4▼aGenetics
■650 4▼aMolecular biology
■650 4▼aBioinformatics
■650 4▼aBiology
■650 4▼aBiochemistry
■653 ▼aHomeostasis
■653 ▼aMicroRNA
■653 ▼aNMD pathway
■653 ▼aORF length
■653 ▼aGene expression
■653 ▼aORF Mediated Decay
■690 ▼a0369
■690 ▼a0307
■690 ▼a0715
■690 ▼a0487
■690 ▼a0306
■71020▼aYale University▼bGenetics.
■7730 ▼tDissertations Abstracts International▼g86-02B.
■790 ▼a0265
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160422▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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