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Sporamin induce apoptosis in human tongue carcinoma cells by down‐regulating Akt/GSK‐3 signaling
Author(s) -
Yao Jun,
Qian Cuijuan
Publication year - 2011
Publication title -
fundamental and clinical pharmacology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 73
eISSN - 1472-8206
pISSN - 0767-3981
DOI - 10.1111/j.1472-8206.2010.00830.x
Subject(s) - protein kinase b , apoptosis , microbiology and biotechnology , chemistry , signal transduction , phosphorylation , cell culture , biology , biochemistry , genetics
We investigated the effects of sporamin, the major soluble protein with a kunitz‐type trypsin inhibitory activity in the root tuber of the sweet potato, on cell proliferation, apoptosis, Akt/GSK‐3 signaling and its related genes to provide more insights in the mechanism behind the inhibitory effects of sporamin in a human tongue cancer line Tca8113. In this study, sporamin inhibited cell proliferation and induced apoptosis in Tca8113 cells in a concentration‐dependent and time‐dependent manner. Consistently, Bax was up‐regulated and Bcl‐2 was down‐regulated in sporamin‐treated cells. Furthermore, Akt/GSK‐3 signaling was down‐regulated in sporamin‐treated cells. Consistently, the phosphorylated Bad was significantly declined in sporamin‐treated Tca8113 cells. These results suggest the antiproliferative effects of sporamin in Tca8113 cells might result partly from induction of apoptosis by down‐regulating Akt/GSK‐3 pathway.