Adherens junction function and regulation during zebrafish gastrulation

نویسندگان

  • Antonino Schepis
  • W. James Nelson
چکیده

The adherens junction (AJ) comprises multi-protein complexes required for cell-cell adhesion in embryonic development and adult tissue homeostasis. Mutations in key proteins and mis-regulation of AJ adhesive properties can lead to pathologies such as cancer. In recent years, the zebrafish has become an excellent model organism to integrate cell biology in the context of a multicellular organization. The combination of classical genetic approaches with new tools for live imaging and biophysical approaches has revealed new aspects of AJ biology, particularly during zebrafish gastrulation. These studies have resulted in progress in understanding the relationship between cell-cell adhesion, cell migration and plasma membrane blebbing.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

13-P084 Regulation of neural stem cells in the zebrafish hypothalamus by Shh

signaling to orchestrate cell shape changes during mesoderm invagination. The apically targeted transmembrane protein T48 acts as an anchor for RhoGEF2 via a PDZ binding motif and thereby ensures the apical enrichment of RhoGEF2 during mesoderm invagination allowing rapid and efficient ventral furrow formation. Apical constriction also requires the tethering of the contractile network to the ad...

متن کامل

Primates

adherens junctions — within the apical junctional region of the Drosophila embryonic epithelium; this may provide mechanical stability during the junctional remodeling that accompanies tissue morphogenesis. Too much or too little ERM-mediated crosslinking impairs the migration of mesendoderm cells during zebrafish gastrulation and homing lymphocytes in mice. This is due in part to the cells’ in...

متن کامل

Armadillo is required for adherens junction assembly, cell polarity, and morphogenesis during Drosophila embryogenesis

Morphological and biochemical analyses have identified a set of proteins which together form a structure known as the adherens junction. Elegant experiments in tissue culture support the idea that adherens junctions play a key role in cell-cell adhesion and in organizing cells into epithelia. During normal embryonic development, cells quickly organize epithelia; these epithelial cells participa...

متن کامل

A Vertebrate-Specific Chp-PAK-PIX Pathway Maintains E-Cadherin at Adherens Junctions during Zebrafish Epiboly

BACKGROUND In early vertebrate development, embryonic tissues modulate cell adhesiveness and acto-myosin contractility to correctly orchestrate the complex processes of gastrulation. E-cadherin (E-cadh) is the earliest expressed cadherin and is needed in the mesendodermal progenitors for efficient migration. Regulatory mechanisms involving directed E-cadh trafficking have been invoked downstrea...

متن کامل

aPKC controls microtubule organization to balance adherens junction symmetry and planar polarity during development.

Tissue morphogenesis requires assembling and disassembling individual cell-cell contacts without losing epithelial integrity. This requires dynamic control of adherens junction (AJ) positioning around the apical domain, but the mechanisms involved are unclear. We show that atypical Protein Kinase C (aPKC) is required for symmetric AJ positioning during Drosophila embryogenesis. aPKC is dispensa...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره 6  شماره 

صفحات  -

تاریخ انتشار 2012