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2018 ; 37
(30
): 4137-4150
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gab.com Text
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Wild-type p53 upregulates an early onset breast cancer-associated gene GAS7 to
suppress metastasis via GAS7-CYFIP1-mediated signaling pathway
#MMPMID29706651
Chang JW
; Kuo WH
; Lin CM
; Chen WL
; Chan SH
; Chiu MF
; Chang IS
; Jiang SS
; Tsai FY
; Chen CH
; Huang PH
; Chang KJ
; Lin KT
; Lin SC
; Wang MY
; Uen YH
; Tu CW
; Hou MF
; Tsai SF
; Shen CY
; Tung SL
; Wang LH
Oncogene
2018[Jul]; 37
(30
): 4137-4150
PMID29706651
show ga
The early onset breast cancer patients (age???40) often display higher incidence
of axillary lymph node metastasis, and poorer five-year survival than the
late-onset patients. To identify the genes and molecules associated with poor
prognosis of early onset breast cancer, we examined gene expression profiles from
paired breast normal/tumor tissues, and coupled with Gene Ontology and public
data base analysis. Our data showed that the expression of GAS7b gene was lower
in the early onset breast cancer patients as compared to the elder patients. We
found that GAS7 was associated with CYFIP1 and WAVE2 complex to suppress breast
cancer metastasis via blocking CYFIP1 and Rac1 protein interaction, actin
polymerization, and ?1-integrin/FAK/Src signaling. We further demonstrated that
p53 directly regulated GAS7 gene expression, which was inversely correlated with
p53 mutations in breast cancer specimens. Our study uncover a novel regulatory
mechanism of p53 in early onset breast cancer progression through
GAS7-CYFIP1-mediated signaling pathways.
|Adaptor Proteins, Signal Transducing/*genetics
[MESH]