期刊
CLINICAL AND EXPERIMENTAL PHARMACOLOGY AND PHYSIOLOGY
卷 44, 期 3, 页码 413-420出版社
WILEY
DOI: 10.1111/1440-1681.12708
关键词
apoptosis; oesophageal cancer; shRNA; STAT3
资金
- National Natural Science Foundation of China [81500635, 81370497]
- Science Foundation of Health and Family Planning Commission of Jilin Province [2015Z006]
- Norman Bethune Fund from Jilin University [2012207]
STAT3 is persistently activated in a wide variety of human tumours, and aberrant STAT3 activity promotes tumour growth, invasion and metastasis. To explore STAT3 down-regulation in human oesophageal cancer cells, cell proliferation, apoptosis and mitochondrial mechanisms were explored in oesophageal carcinoma TE1 cell cultures. We demonstrate for the first time that STAT3 down-regulation by RNAi is sufficient to inhibit oesophageal cancer cell proliferation inducing cell apoptosis. Further, we demonstrate that mitochondrial transmembrane potential is impaired thereby leading to collapsed mitochondrial membrane potential, abnormal mitochondrial membrane depolarization, nuclear DNA fragmentation and cell cycle G2/M arrest under the conditions of STAT3 down-regulation. Thus, our results suggest that STAT3 inhibition is a valid approach to induce oesophageal carcinoma cell mitochondrial-dependent apoptosis in therapeutic strategies against oesophageal cancers.
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