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Roles of Mitosis and Planar Cell Polarity Pathway Play in Early Amniote Midline Patterning
Roles of Mitosis and Planar Cell Polarity Pathway Play in Early Amniote Midline Patterning
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153032
- ISBN
- 9798346877660
- DDC
- 574
- 저자명
- Zhao, Zhiling.
- 서명/저자
- Roles of Mitosis and Planar Cell Polarity Pathway Play in Early Amniote Midline Patterning
- 발행사항
- [Sl] : University of California, San Francisco, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 89 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
- 주기사항
- Advisor: Reiter, Jeremy.
- 학위논문주기
- Thesis (Ph.D.)--University of California, San Francisco, 2024.
- 초록/해제
- 요약Midline establishment is a fundamental process during early embryogenesis for Bilaterians. Midline patterning in non-amniotes can occur without cell proliferation, in part by Planar Cell Polarity (PCP) signaling. On the contrary, both cell proliferation and PCP signaling are required in amniote for patterning early midline structure, the primitive streak (PS). Yet, their role in post PS-extension stages remains unclear. Here, we systematically examined and defined their roles for midline patterning in amniotes using early chicken embryogenesis as a model system. Cell proliferation was indispensable for PS extension. In contrast, at the post PS-extension stages, notochord (NC) extension and Hensen's node (HN)/PS regression persisted under mitotic arrest, although the embryo became shorter. Gene expression analysis revealed that midline identities were maintained while laterality was lost upon mitotic arrest. Further, while the majority of PCP core components were undetectable in the NC-HN-PS area at post PS-extension stages, Prickle-1 was robustly detected. However, morpholino knockdown of Prickle-1 showed little influence on midline patterning but suppressed embryonic growth. Lastly, associated with mitotic arrest-induced embryonic size reduction, midline tissues were consistent of cells with hypertrophy. At least two mitosis sensitivity phases are present from pre-streak stages to post PS-extension stages, including PS extension that requires mitosis and midline patterning that persists under mitotic arrest at post PS-extension stages. While PCP is indispensable for PS extension, the role of PCP for amniote midline patterning at post PS-extension stages remains to be explored.
- 일반주제명
- Developmental biology
- 일반주제명
- Cellular biology
- 일반주제명
- Molecular biology
- 키워드
- Cell hypertrophy
- 기타저자
- University of California, San Francisco Developmental and Stem Cell Biology
- 기본자료저록
- Dissertations Abstracts International. 86-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211153032
■006m o d
■007cr#unu||||||||
■020 ▼a9798346877660
■035 ▼a(MiAaPQ)AAI31636293
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aZhao, Zhiling.▼0(orcid)0000-0003-0623-5057
■24510▼aRoles of Mitosis and Planar Cell Polarity Pathway Play in Early Amniote Midline Patterning
■260 ▼a[Sl]▼bUniversity of California, San Francisco▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a89 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-06, Section: B.
■500 ▼aAdvisor: Reiter, Jeremy.
■5021 ▼aThesis (Ph.D.)--University of California, San Francisco, 2024.
■520 ▼aMidline establishment is a fundamental process during early embryogenesis for Bilaterians. Midline patterning in non-amniotes can occur without cell proliferation, in part by Planar Cell Polarity (PCP) signaling. On the contrary, both cell proliferation and PCP signaling are required in amniote for patterning early midline structure, the primitive streak (PS). Yet, their role in post PS-extension stages remains unclear. Here, we systematically examined and defined their roles for midline patterning in amniotes using early chicken embryogenesis as a model system. Cell proliferation was indispensable for PS extension. In contrast, at the post PS-extension stages, notochord (NC) extension and Hensen's node (HN)/PS regression persisted under mitotic arrest, although the embryo became shorter. Gene expression analysis revealed that midline identities were maintained while laterality was lost upon mitotic arrest. Further, while the majority of PCP core components were undetectable in the NC-HN-PS area at post PS-extension stages, Prickle-1 was robustly detected. However, morpholino knockdown of Prickle-1 showed little influence on midline patterning but suppressed embryonic growth. Lastly, associated with mitotic arrest-induced embryonic size reduction, midline tissues were consistent of cells with hypertrophy. At least two mitosis sensitivity phases are present from pre-streak stages to post PS-extension stages, including PS extension that requires mitosis and midline patterning that persists under mitotic arrest at post PS-extension stages. While PCP is indispensable for PS extension, the role of PCP for amniote midline patterning at post PS-extension stages remains to be explored.
■590 ▼aSchool code: 0034.
■650 4▼aDevelopmental biology
■650 4▼aCellular biology
■650 4▼aMolecular biology
■653 ▼aCell hypertrophy
■653 ▼aCell proliferation
■653 ▼aEarly amniote development
■653 ▼aMidline patterning
■653 ▼aNotochord formation
■653 ▼aPlanar Cell Polarity
■690 ▼a0758
■690 ▼a0379
■690 ▼a0307
■71020▼aUniversity of California, San Francisco▼bDevelopmental and Stem Cell Biology.
■7730 ▼tDissertations Abstracts International▼g86-06B.
■790 ▼a0034
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164694▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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