Abstract
We investigated the molecular function of PDLIM4 in prostate cancer cells. PDLIM4 mRNA and protein-expression levels were reduced in LNCaP, LAPC4, DU145, CWR22, and PC3 prostate cancer cells. The re-expression of PDLIM4 in prostate cancer cells has significantly reduced the cell growth and clonogenicity with G1 phase of cell-cycle arrest. We have shown the direct interaction of PDLIM4 with F-actin. Restoration of PDLIM4 expression resulted in reduction of tumor growth in xenografts. These results suggest that PDLIM4 may function as a tumor suppressor, involved in the control of cell proliferation by associating with actin in prostate cancer cells.
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