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Title: I told you to stop: obscurin's role in epithelial cell migration
The giant cytoskeletal protein obscurin contains multiple cell signaling domains that influence cell migration. Here, we follow each of these pathways, examine how these pathways modulate epithelial cell migration, and discuss the cross-talk between these pathways. Specifically, obscurin uses its PH domain to inhibit phosphoinositide-3-kinase (PI3K)-dependent migration and its RhoGEF domain to activate RhoA and slow cell migration. While obscurin's effect on the PI3K pathway agrees with the literature, obscurin's effect on the RhoA pathway runs counter to most other RhoA effectors, whose activation tends to lead to enhanced motility. Obscurin also phosphorylates cadherins, and this may also influence cell motility. When taken together, obscurin's ability to modulate three independent cell migration pathways is likely why obscurin knockout cells experience enhanced epithelial to mesenchymal transition, and why obscurin is a frequently mutated gene in several types of cancer.  more » « less
Award ID(s):
2024182
PAR ID:
10623689
Author(s) / Creator(s):
; ;
Publisher / Repository:
Portland Press
Date Published:
Journal Name:
Biochemical Society Transactions
Volume:
52
Issue:
4
ISSN:
0300-5127
Page Range / eLocation ID:
1947 to 1956
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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