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January 24, 2010 | History

Characterizing the role of EphB4 receptor tyrosine kinase during Xenopus gastrulation 1 edition

Characterizing the role of EphB4 receptor tyrosine kinase during Xeno ...
Mark Paul Makowiecki

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Characterizing the role of EphB4 receptor tyrosine kinase during Xenopus gastrulation.

Published 2005 .
Written in English.

About the Book

EphB transmembrane receptor tyrosine kinases interact with membrane bound ephrin ligands, typically eliciting repulsion or adhesion between contacting cells. Although numerous functions for Eph-ephrin interactions have been established, their role during Xenopus gastrulation has not been explored. Presented here is a first look into EphB4 function during this process.Unexpectedly, EphB4 loss of function also alters the expression levels of several dorsal marker genes, potentially changing cell fate.Upon establishing the presence of EphB and ephrinB proteins during gastrulation, it was shown that loss of EphB4 RTK function, by microinjection of morpholino or dominant negative constructs, causes severe gastrulation defects. These defects are rescuable by co-injection of wild type EphB4 RNA.Inhibition of EphB4 translation by morpholino inhibits convergent extension and anterior mesoderm involution, but not vegetal rotation. Loss of EphB4 function, by dominant negative construct, diminished fibronectin fibril formation, animally, and repulsion behaviour in the blastocoel roof.

Edition Notes

Source: Masters Abstracts International, Volume: 44-02, page: 0742.

Thesis (M.Sc.)--University of Toronto, 2005.

Electronic version licensed for access by U. of T. users.

GERSTEIN MICROTEXT copy on microfiche (2 microfiches).

The Physical Object

147 leaves.
Number of pages

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January 24, 2010 Edited by WorkBot add more information to works
December 11, 2009 Created by WorkBot add works page