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2017 ; 8
(16
): 26334-26343
Nephropedia Template TP
Gu DH
; Mao JH
; Pan XD
; Zhu H
; Chen X
; Zheng B
; Shan Y
Oncotarget
2017[Apr]; 8
(16
): 26334-26343
PMID28412750
show ga
The expression and biological function of Grb2-associated binding 2 (Gab2) in
renal cell carcinoma (RCC) cells was tested here. We showed that Gab2 expression
was significantly elevated in human RCC tissues and RCC cells. It was correlated
with over-activation of Akt and downregulation of microRNA-302c-3p
("miR-302c-3p"), a putative Gab2-targeting microRNA. Knockdown of Gab2 inhibited
Akt activation and 786-O RCC cell proliferation. Reversely, forced
over-expression of Gab2 led to Akt hyper-activation to facilitate 786-O cell
proliferation. Exogenous expression of miR-302c caused Gab2 downregulation, Akt
inhibition and 786-O cell proliferation inhibition. On the other hand,
miR-302c-3p depletion by expressing its anti-sense ("antagomiR-302c") led to Gab2
upregulation, Akt activation and increased 786-O cell proliferation.
Significantly, miR-302c-3p failed to affect the proliferation of 786-O cells with
shRNA-depleted Gab2. Together, we suggest that miR-302c-3p depletion in human RCC
cells leads to Gab2 over-expression, Akt hyper-activation and cell proliferation.
|*Gene Expression Regulation, Neoplastic
[MESH]
|*RNA Interference
[MESH]
|Adaptor Proteins, Signal Transducing/*genetics
[MESH]