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Effects of siRNA targeted to survivin in suppressing proliferation and inducing apoptosis in breast cancer MCF-7 cells / 中华肿瘤杂志
Chinese Journal of Oncology ; (12): 326-330, 2006.
Artículo en Chino | WPRIM | ID: wpr-236974
ABSTRACT
<p><b>OBJECTIVE</b>Blocking the expression of survivin with RNA interference techniques, the effects of suppressing proliferation and inducing apoptosis of breast cancer MCF-7 cells were investigated.</p><p><b>METHODS</b>A siRNA eukaryotic expression vector against survivin was constructed and transfected into breast cancer MCF-7 cells with lipofectamine 2000. The changes of survivin expression were detected by semi-quantitive RT-PCR and immunohistochemistry. The effect of suppressing proliferation of MCF-7 cell was detected by MTT assay. The effect of inducing MCF-7 cell apoptosis was detected by TUNEL assay.</p><p><b>RESULTS</b>The sequence-specific siRNA can efficiently block the expression of survivin both at mRNA and protein levels. The expression inhibition rate was 64.9% at mRNA level detected by semi-quantitive RT-PCR and 79.7% at protein level detected by immunohistochemistry. Blocking the expression of survivin can suppress proliferation of MCF-7 cells significantly. At 24 and 48 h after the cells were reseeded, the proliferation inhibition rates were 31.6% and 33.0%, respectively. At 24 h after transfection, apoptosis was induced in 12.9% of the cells as detected by TUNEL assay.</p><p><b>CONCLUSION</b>Blocking the expression of survivin with RNA interference technology can significantly suppress proliferation of MCF-7 cells and induce apoptosis to a certain degree. RNAi targeted to survivin has a potential value in gene therapy of breast cancer.</p>
Asunto(s)
Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Patología / Farmacología / Fisiología / Neoplasias de la Mama / ARN Mensajero / Transfección / Terapia Genética / Apoptosis / ARN Interferente Pequeño / Interferencia de ARN Límite: Femenino / Humanos Idioma: Chino Revista: Chinese Journal of Oncology Año: 2006 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Patología / Farmacología / Fisiología / Neoplasias de la Mama / ARN Mensajero / Transfección / Terapia Genética / Apoptosis / ARN Interferente Pequeño / Interferencia de ARN Límite: Femenino / Humanos Idioma: Chino Revista: Chinese Journal of Oncology Año: 2006 Tipo del documento: Artículo