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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
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
키워드  
Cell proliferation
키워드  
Early amniote development
키워드  
Midline patterning
키워드  
Notochord formation
키워드  
Planar Cell Polarity
기타저자  
University of California, San Francisco Developmental and Stem Cell Biology
기본자료저록  
Dissertations Abstracts International. 86-06B.
전자적 위치 및 접속  
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MARC

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■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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