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http://dx.doi.org/10.5352/JLS.2017.27.1.1

Overexpression of Profilin 1 Inhibited Ovarian Tumor Cell Growth and Migration  

Lee, Seung-Hoon (Department of Life Science, YongIn university)
Publication Information
Journal of Life Science / v.27, no.1, 2017 , pp. 1-7 More about this Journal
Abstract
Abnormal actin remodeling is a typical characteristic of tumor cells. Thymosin ${\beta}_{10}$ (TB10) and profilin-1 (PFN-1) are actin-binding proteins and essential regulators of actin polymerization. We previously showed that TB10 induced death in ovarian cancer cells by sequestering F-actin, but the underlying mechanisms of this induction have not been explored. In this study, we identified TB10 as a novel regulator of PFN-1 and demonstrated its novel function as a tumor suppressor in ovarian cancer cell lines. The present study investigated protein expression profiles through polyacrylamide gel electrophoresis (PAGE) and liquid chromatography-mass spectroscopy (LC-MS/MS) in SKOV3 cells, an ovarian cancer cell line, that were transiently transfected with TB10. PFN-1 was highly overexpressed in response to TB10, and overexpression of PFN-1 resulted in inhibition of cell proliferation and migration and promotion of cellular apoptosis in ovarian cancer cells. Furthermore, transiently transfected PFN-1 appeared to deactivate the Erk signaling pathway, followed by decreased expression of Elk-1 and Egr-1 in human ovarian cancer cells. Interestingly, PFN-1 did not affect the activation of Akt. The results demonstrated that PFN-1 induced apoptotic cell death and inhibited proliferation and migration in ovarian cancer cells, suggesting that PFN-1 may be valuable in anti-cancer therapy.
Keywords
Migration; ovarian cancer; Profilin-1; proliferation; therapy;
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