Glycogen synthase kinase-3β positively regulates the proliferation of human ovarian cancer cells
Although glycogen synthase kinase-3 (GSK-3) might act as a tumor suppressor since its inhibition is expected to mimic the activation of Wnt-signaling pathway, GSK-3β may contribute to NF-κB activation in cancer cells leading to increased cancer cell proliferation and survival. Here we report that GS...
Saved in:
Published in | Cell research Vol. 16; no. 7; pp. 671 - 677 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
01.07.2006
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Although glycogen synthase kinase-3 (GSK-3) might act as a tumor suppressor since its inhibition is expected to mimic the activation of Wnt-signaling pathway, GSK-3β may contribute to NF-κB activation in cancer cells leading to increased cancer cell proliferation and survival. Here we report that GSK-3β activity was involved in the proliferation of human ovarian cancer cell both in vitro and in vivo. Inhibition of GSK-3 activity by pharmacological inhibitors suppressed proliferation of the ovarian cancer cells. Overexpressing constitutively active form of GSK-3β induced entry into the S phase, increased cyclin D1 expression and facilitated the proliferation of ovarian cancer cells. Furthermore, GSK-3 inhibition prevented the formation of the tumor in nude mice generated by the inoculation of human ovarian cancer cells. Our findings thus suggest that GSK-3β activity is important for the proliferation of ovarian cancer cells, implicating this kinase as a potential therapeutic target in ovarian cancer. |
---|---|
Bibliography: | glycogen synthase kinase 3β, ovarian cancer, cell proliferation, therapeutic target 31-1568/Q R737.31 |
ISSN: | 1001-0602 1748-7838 |
DOI: | 10.1038/sj.cr.7310078 |