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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, RESULTS. Meshes: Base Sequence, Cell Line, Tumor, Gene Expression, Genetic Vectors, Humans, Hypoxia-Inducible Factor 1, alpha Subunit, Male, Prostatic Neoplasms, RNA, Messenger, RNA, Small Interfering, Transfection.
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Does [ Vector-mediated shRNA inhibit HIF-1alpha expression in prostate cancer cells ]? Context: To construct a short hairpin RNA (shRNA) vector of the hypoxia inducible factor-1alpha (HIF-1alpha), determine its inhibitory effect on the expression of the HIF-1alpha gene in PC-3M cells, and investigate its application prospects in the treatment of prostate cancer. We designed and synthesized the shRNA template sequence specific against HIF-lalpha, inserted it into the vector psilencer 2.1-U6 to generate the plasmid psilencer-HIF, transfected the recombinant plasmid into prostate cancer cell line PC-3M cells and detected the transfection efficiency by cotransfection with the pEGFP vector as well as the expression of HIF-1alpha by RT-PCR and Western blot. The DNA sequencing analysis showed a complete consistency of the recombinant plasmid psilencer-HIF with the design. Twenty-four hours after the transfection, the rate of transfected plasmid was about (89.26 +/- 4.72)% and the vector-mediated shRNA induced RNA interference (RNAi), while 48 hours transfection reduced the HIF-1alpha mRNA and protein levels by 82.09% and 81.61% respectively (P < 0.01) in PC-3M cells.
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The shRNA vector was successfully constructed, which can effectively suppress the expression of HIF-1alpha in prostate cancer cells. Final Decision: yes