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Par-4 Modulates Cell Migration through Inhibition of MMP-2 Activity in Human Renal Carcinoma Caki Cells
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  • Journal title : Journal of Life Science
  • Volume 26, Issue 5,  2016, pp.614-619
  • Publisher : Korean Society of Life Science
  • DOI : 10.5352/JLS.2016.26.5.614
 Title & Authors
Par-4 Modulates Cell Migration through Inhibition of MMP-2 Activity in Human Renal Carcinoma Caki Cells
Woo, Seon Min; Kwon, Taeg Kyu;
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The prostate-apoptosis-response-gene-4 (Par-4) protein has been identified as an effector of cell death in response to various apoptotic stimuli in prostate cancer cells. We found that overexpression of Par-4 by stable transfection inhibits cell migration and invasion in Caki cells. The expression of various matrix metalloproteinases (MMPs) has been implicated in the invasion and metastasis of cancer cells. In this study, we investigated whether ectopic expression of Par-4 modulates MMP-2 expression and activity in human renal carcinoma Caki cells. We found that overexpression of Par-4 markedly inhibited MMP-2 activity, but not MMP-9 activity. However, loss of the leucine zipper domain of Par-4 (Par-4 ΔLZ#1 and #2) did not inhibit MMP-2 activity. Further, knock-down of Par-4 with the corresponding siRNA resulted in increased invasion and metastasis of renal carcinoma Caki cells. Interestingly, overexpression or knock-down of Par-4 did not affect the expression levels of MMP-2 mRNA. Taken together, our findings suggest that Par-4 may inhibit MMP-2 activity through its post-transcriptional regulation in renal carcinoma Caki cells.
Caki cells;cell migration;cell invasion;Matrix metalloproteinase-2;Par-4;
 Cited by
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