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Deprecated: Implicit conversion from float 253.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Oncotarget 2015 ; 6 (13): 11585-99 Nephropedia Template TP
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TMEM16A overexpression contributes to tumor invasion and poor prognosis of human gastric cancer through TGF-? signaling #MMPMID25839162
Liu F; Cao QH; Lu DJ; Luo B; Lu XF; Luo RC; Wang XG
Oncotarget 2015[May]; 6 (13): 11585-99 PMID25839162show ga
TMEM16A is a newly identified calcium activated chloride channel, and has been reported to be overexpressed by various solid malignant cancers to promote proliferation and invasion, yet little is known about its role in gastric cancer(GC). Therefore, we investigated the role of TMEM16A in GC and its clinical significance by a retrospective analysis of 367 GC patients, and in vitro study was performed for validation and underlying molecular mechanism.TMEM16A was significantly upregulated and amplified in GC tissues, and its overexpression was positively correlated with disease stage, negatively with patient survival and identified as an independent prognostic factor for patient outcome. A negative correlation between TMEM16A and E-cadherin was found in 367 GC specimens. TMEM16A silencing significantly decreased calcium activated chloride currents, impaired TGF-? secretion, reduced E-cadherin expression, and inhibited the migration and invasion without affecting proliferation of GC cells (AGS and BGC-823). Supplement of TGF-? reverted the effects of TMEM16A silencing on E-cadherin expression, cell migration and invasion.In conclusion, TMEM16A promotes invasion and metastasis in GC, and might be a novel prognostic biomarker and potential therapeutic target in the treatment of GC.