The role of mir-221/222 in inhibiting endoplasmic reticulum stress-induced human hepatocarcinoma cell apoptosis / 中华肝脏病杂志
Chinese Journal of Hepatology
;
(12): 191-195, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-290605
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the role of miR-221/222 in inhibiting endoplasmic reticulum stress-induced human hepatocarcinoma cells apoptosis.</p><p><b>METHOD</b>miR-221/222 mimics and inhibitors were used to mimic or block the function of endogenous miR-221/222 respectively. Western blot and flow cytometry were used to test the effects of miR-221/222 on cell cycle and apoptosis under endoplasmic reticulum stress in human hepatocellular carcinoma cells.</p><p><b>RESULTS</b>Endoplasmic reticulum stress resulted in miR-221/222 down-regulation in human hepatocellular carcinoma cells. miR-221/222 mimics and inhibitors inhibited and promoted respectively endoplasmic reticulum stress-mediated p27Kip1 induction. Moreover, p27Kip1 suppression not only resulted in reduction in the fraction of G1 phase cells, but also promoted the endoplasmic reticulum stress-mediated apoptosis in human hepatocellular carcinoma cells.</p><p><b>CONCLUSION</b>miR-221/222 were downregulated by endoplasmic reticulum stress in human hepatocellular carcinoma cells, which subsequently protected human hepatocellular carcinoma cells against endoplasmic reticulum stress-induced apoptosis through p27Kip1 regulation.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Cell Cycle
/
Apoptosis
/
Carcinoma, Hepatocellular
/
MicroRNAs
/
Cell Line, Tumor
/
Endoplasmic Reticulum
/
Cyclin-Dependent Kinase Inhibitor p27
/
Liver Neoplasms
/
Metabolism
Limits:
Humans
Language:
Chinese
Journal:
Chinese Journal of Hepatology
Year:
2011
Type:
Article
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