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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2017 ; 8
(ä): 15021
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FAF1 phosphorylation by AKT accumulates TGF-? type II receptor and drives breast
cancer metastasis
#MMPMID28443643
Xie F
; Jin K
; Shao L
; Fan Y
; Tu Y
; Li Y
; Yang B
; van Dam H
; Ten Dijke P
; Weng H
; Dooley S
; Wang S
; Jia J
; Jin J
; Zhou F
; Zhang L
Nat Commun
2017[Apr]; 8
(ä): 15021
PMID28443643
show ga
TGF-? is pro-metastatic for the late-stage breast cancer cells. Despite recent
progress, the regulation of TGF-? type II receptor remains uncertain. Here we
report that FAF1 destabilizes T?RII on the cell surface by recruiting the VCP/E3
ligase complex, thereby limiting excessive TGF-? response. Importantly, activated
AKT directly phosphorylates FAF1 at Ser 582, which disrupts the FAF1-VCP complex
and reduces FAF1 at the plasma membrane. The latter results in an increase in
T?RII at the cell surface that promotes both TGF-?-induced SMAD and non-SMAD
signalling. We uncover a metastasis suppressing role for FAF1 through analyses of
FAF1-knockout animals, various in vitro and in vivo models of
epithelial-to-mesenchymal transition and metastasis, an MMTV-PyMT transgenic
mouse model of mammary tumour progression and clinical breast cancer samples.
These findings describe a previously uncharacterized mechanism by which T?RII is
tightly controlled. Together, we reveal how SMAD and AKT pathways interact to
confer pro-oncogenic responses to TGF-?.
|A549 Cells
[MESH]
|Adaptor Proteins, Signal Transducing/genetics/*metabolism
[MESH]