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Effect of inducible expression of HIF-1α on prostate cancer cell in MPPa-PDT

✍ Scribed by Y.Y. Tian; F. Kong; X. Tian; Q. Guo; F.A. Cui


Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
104 KB
Volume
5
Category
Article
ISSN
1612-2011

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✦ Synopsis


Photodynamic therapy (PDT) is a promising treatment on neoplastic pathologic tissues, which involves the administration of a photosensitizing agent followed by exposure of the tissue to visible non-thermal light. In our previous findings MPPa was showed to be a good photosensitizer candidature, because it can lead PC-3M cell line to death mainly via apoptotic way. In this study, we studied the effect of overexpression of hypoxia inducible factor-1α (HIF-1α) on MPPa-PDT. Over expression of HIF-1α was induced by cobalt chloride (CoCl2) and then the cell viability was tested by MTT assay. After that, HIF-1α siRNA was transfected into PC-3M cells to knock down the expression of HIF-1α and the cell viability was observed. Western blot was used to determine the expression of HIF-1α. Finally, we found that the over expression of HIF-1α would reduce the photodynamic effect of MPPa on PC-3M cells, while the photodynamic effect would be enhanced by HIF-1α siRNA. HIF-1αβ-actin -1 2 3 4 Expression of HIF-1α after incubation with 100 μmol/L CoCl2. Cells were incubated for 4 h and 8 h with CoCl2. 1: 4 h control. 2: 4 h incubation with CoCl 2 . 3: 8 h incubation with CoCl 2 . 4: 8 h control


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