14-3-3epsilon inhibits MK5-mediated cell migration by disrupting F-actin polymerization
- Authors
- Tak, Heejae; Jang, Eunsun; Kim, Seung Beom; Park, Jinhwi; Suk, Jinkyu; Yoon, Yoo Sik; Ahn, Jeong Keun; Lee, Jeung-Hoon; Joe, Cheol O.
- Issue Date
- Nov-2007
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- MAPK; MK5; 14-3-3 epsilon; HSP27; actin polymerization; cell migration; TNF alpha
- Citation
- CELLULAR SIGNALLING, v.19, no.11, pp 2379 - 2387
- Pages
- 9
- Journal Title
- CELLULAR SIGNALLING
- Volume
- 19
- Number
- 11
- Start Page
- 2379
- End Page
- 2387
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/23941
- DOI
- 10.1016/j.cellsig.2007.07.016
- ISSN
- 0898-6568
1873-3913
- Abstract
- The signal pathway by which 14-3-3 epsilon inhibits cell migration induced by MAPK-activated protein kinase 5 (MK5) was investigated in cultured HeLa cells. Both in vivo and in vitro analyses have revealed that 14-3-3e interacts with MK5. 14-3-3e bound to MK5 inhibits the pbosphorylation of HSP27, a known substrate of MK5. Disturbance of actin cytoskeleton organization by 14-3-3 epsilon was shown in transfected cells transiently expressing 14-3-3 epsilon as well as established cells stably expressing 14-3-3e. Moreover, overexpression of 14-3-3e resulted in the inhibition of cell migration induced by MK5 overexpression or TNF alpha treatment. Our results suggest that 14-3-3 epsilon bound to MK5 inhibits cell migration by inhibiting the phosphorylation of HSP27 whose phospborylation regulates F-actin polymerization, actin cytoskeleton organization and subsequent actinfilament dynamics. (C) 2007 Elsevier Inc. All rights reserved.
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