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2016 ; 7
(9
): 10402-13
Nephropedia Template TP
gab.com Text
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English Wikipedia
OLA1 contributes to epithelial-mesenchymal transition in lung cancer by
modulating the GSK3?/snail/E-cadherin signaling
#MMPMID26863455
Bai L
; Yu Z
; Zhang J
; Yuan S
; Liao C
; Jeyabal PV
; Rubio V
; Chen H
; Li Y
; Shi ZZ
Oncotarget
2016[Mar]; 7
(9
): 10402-13
PMID26863455
show ga
Obg-like ATPase 1 (OLA1) belongs to the Obg family of P-loop NTPases, and may
serve as a "molecular switch" regulating multiple cellular processes. Aberrant
expression of OLA1 has been observed in several human malignancies. However, the
role of OLA1 in cancer progression remains poorly understood. In this study, we
used the Kaplan-Meier plotter search tool to show that increased expression of
OLA1 mRNA was significantly associated with shorter overall survival in lung
cancer patients. By immunohistochemical analysis we discovered that levels of
OLA1 protein in lung cancer tissues were positively correlated with TNM stage and
lymph node metastasis, but negatively correlated with the epithelial-mesenchymal
transition (EMT) marker E-cadherin. Knockdown of OLA1 in a lung adenocarcinoma
cell line rendered the cells more resistant to TGF-?-induced EMT and the
accompanied repression of E-cadherin. Furthermore, our results demonstrated that
OLA1 is a GSK3?-interacting protein and inhibits GSK3? activity by mediating its
Ser9 phosphorylation. During EMT, OLA1 plays an important role in suppressing the
GSK3?-mediated degradation of Snail protein, which in turn promotes
downregulation of E-cadherin. These data suggest that OLA1 contributes to EMT by
modulating the GSK3?/Snail/E-cadherin signaling, and its overexpression is
associated with clinical progression and poor survival in lung cancer patients.