RESUMO
<p><b>OBJECTIVE</b>To observe the expression of the C-terminal truncated human apoptosis-inducing factor (AIF) and its biological effect on MCF-7 cells.</p><p><b>METHODS</b>PcDNA3.0-FDT-AIFδ1-480 was transfected into human breast carcinoma MCF-7 cells with lipofectamine. The expression of the truncated AIF gene was detected by Western blotting, and its effects on the biological behaviors of MCF-7 cells and on the expression of cytochrome c (cytC) were evaluated using flow cytometry, MTT assay, colony-forming assay, and mitochondrial membrane potential measurement.</p><p><b>RESULTS</b>PcDNA3.0-FDT-AIFδ1-480 enhanced AIF expression in MCF-7 cells, obviously inhibited the cell proliferation, and significantly reduced the mitochondrial membrane potentials (P<0.05). Transfection of the cells with PcDNA3.0-FDT-AIFδ1-480 promoted the expression of cytC and resulted in significantly increased apoptosis of MCF-7 cells (P<0.05).</p><p><b>CONCLUSION</b>The expression of C-terminal truncated human AIF gene can induce apoptosis of human MCF-7 cells by promoting cytC release from mitochondria.</p>
Assuntos
Feminino , Humanos , Apoptose , Fator de Indução de Apoptose , Genética , Metabolismo , Neoplasias da Mama , Metabolismo , Patologia , Proliferação de Células , Citocromos c , Genética , Metabolismo , Células MCF-7 , Potencial da Membrana Mitocondrial , Mitocôndrias , MetabolismoRESUMO
AIM and METHODS: To analysis the factor that involved in renal carcin ogenesis, we used the bait gene AK001518 to screen GenBank. To understand the re lationship between cell cycle related gene(CCRG) and p15, we did RT-PCR and Nort hern Blot experiments. Th en we examined CCRG expression level in renal carcinogenesis. RESULTS: Gained a function unknown gene CCRG that was 67% a mino acid identical with the gene AK00 1 518 that was regulated by p15. It was shown that the CCRG mRNA was dramatically d ecreased when p15 gene was over-expressed. CCRG expression level was much higher i n tumor tissues and cells than normal tissues and cells. CONCLUSION: The novel g ene CCRG expressed highly in the renal carcinoma, which might play a significant role in the renal carcinogenesis.