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Epithelial Biophysics at Molecular and Sub-Tissue Scales
Epithelial Biophysics at Molecular and Sub-Tissue Scales
Epithelial Biophysics at Molecular and Sub-Tissue Scales

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152118
ISBN  
9798384336495
DDC  
612
저자명  
Vachharajani, Vipul Tushar.
서명/저자  
Epithelial Biophysics at Molecular and Sub-Tissue Scales
발행사항  
[Sl] : Stanford University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
104 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Dunn, Alexander.
학위논문주기  
Thesis (Ph.D.)--Stanford University, 2024.
초록/해제  
요약Cell-cell adhesion and apicobasal polarity are defining characteristics of epithelial tissues that enabled the development of multicellular life. In this thesis, I describe two projects that aim to address questions about each of these fundamental processes.First, I present work using live-cell imaging to study the physical mechanism of lumen formation in Madin-Darby Canine Kidney (MDCK) cell spheroids, a canonical cell-culture model for lumenogenesis. We find that in this system, lumen shape reflects basic geometrical considerations tied to the establishment of apico-basal polarity. A physical model incorporating both cell geometry and intraluminal pressure can account for our observations as well as cases in which pressure plays a dominant role.Next, I present a study characterizing the single-molecule mechanics of an understudied class of cell adhesion molecules. Afadin is an essential actin-binding protein that is associated with both adherens and tight junctions. Using a single-molecule magnetic tweezers assay, we probed the mechanical stability of the bonds between the Afadin PDZ domain and the intracellular domains of two of its binding partners, Nectin-1 and JAM-A. We found that both ligands formed remarkably stable bonds with Afadin-PDZ at forces up to 10 pN. Our data suggest that the relatively-understudied complexes of afadin with JAM-A and Nectin-1 may function in parallel with cadherin-based adhesions to transmit forces across cell-cell junctions.
일반주제명  
Physiology
일반주제명  
Pathogens
일반주제명  
Fourier transforms
일반주제명  
Cell adhesion & migration
일반주제명  
Disease
일반주제명  
Permeability
일반주제명  
Microscopy
일반주제명  
Extracellular matrix
일반주제명  
Spheroids
일반주제명  
Bond strength
일반주제명  
Morphogenesis
일반주제명  
Biophysics
일반주제명  
Cellular biology
일반주제명  
Developmental biology
일반주제명  
Mathematics
기타저자  
Stanford University.
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■020    ▼a9798384336495
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■035    ▼a(MiAaPQ)Stanfordsq687jx1202
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a612
■1001  ▼aVachharajani,  Vipul  Tushar.
■24510▼aEpithelial  Biophysics  at  Molecular  and  Sub-Tissue  Scales
■260    ▼a[Sl]▼bStanford  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a104  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Dunn,  Alexander.
■5021  ▼aThesis  (Ph.D.)--Stanford  University,  2024.
■520    ▼aCell-cell  adhesion  and  apicobasal  polarity  are  defining  characteristics  of  epithelial  tissues  that  enabled  the  development  of  multicellular  life.  In  this  thesis,  I  describe  two  projects  that  aim  to  address  questions  about  each  of  these  fundamental  processes.First,  I  present  work  using  live-cell  imaging  to  study  the  physical  mechanism  of  lumen  formation  in  Madin-Darby  Canine  Kidney  (MDCK)  cell  spheroids,  a  canonical  cell-culture  model  for  lumenogenesis.  We  find  that  in  this  system,  lumen  shape  reflects  basic  geometrical  considerations  tied  to  the  establishment  of  apico-basal  polarity.  A  physical  model  incorporating  both  cell  geometry  and  intraluminal  pressure  can  account  for  our  observations  as  well  as  cases  in  which  pressure  plays  a  dominant  role.Next,  I  present  a  study  characterizing  the  single-molecule  mechanics  of  an  understudied  class  of  cell  adhesion  molecules.  Afadin  is  an  essential  actin-binding  protein  that  is  associated  with  both  adherens  and  tight  junctions.  Using  a  single-molecule  magnetic  tweezers  assay,  we  probed  the  mechanical  stability  of  the  bonds  between  the  Afadin  PDZ  domain  and  the  intracellular  domains  of  two  of  its  binding  partners,  Nectin-1  and  JAM-A.  We  found  that  both  ligands  formed  remarkably  stable  bonds  with  Afadin-PDZ  at  forces  up  to  10  pN.  Our  data  suggest  that  the  relatively-understudied  complexes  of  afadin  with  JAM-A  and  Nectin-1  may  function  in  parallel  with  cadherin-based  adhesions  to  transmit  forces  across  cell-cell  junctions.
■590    ▼aSchool  code:  0212.
■650  4▼aPhysiology
■650  4▼aPathogens
■650  4▼aFourier  transforms
■650  4▼aCell  adhesion  &  migration
■650  4▼aDisease
■650  4▼aPermeability
■650  4▼aMicroscopy
■650  4▼aExtracellular  matrix
■650  4▼aSpheroids
■650  4▼aBond  strength
■650  4▼aMorphogenesis
■650  4▼aBiophysics
■650  4▼aCellular  biology
■650  4▼aDevelopmental  biology
■650  4▼aMathematics
■690    ▼a0719
■690    ▼a0786
■690    ▼a0379
■690    ▼a0758
■690    ▼a0405
■71020▼aStanford  University.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0212
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162973▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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