Effects of mitofusin-2 gene on cell proliferation and chemotherapy sensitivity of MCF-7 / 华中科技大学学报(医学)(英德文版)
Journal of Huazhong University of Science and Technology (Medical Sciences)
; (6): 185-9, 2008.
Article
en En
| WPRIM
| ID: wpr-634645
Biblioteca responsable:
WPRO
ABSTRACT
In order to evaluate the effect of mitofusin-2 gene (mfn2) on proliferation and chemotherapy sensitivity of human breast carcinoma cell line MCF-7 in vitro, pEGFPmfn2 plasmid carrying full length of mitofusin-2 gene was transfected, by using sofast, into MCF-7 cells. Mitofusin-2 gene expression in MCF-7 cells transfected by sofast after 48 h was detected by PCR and Western blotting, and the stable expression of GFP protein in MCF-7 cells by Western blot analysis. The proliferation of MCF-7 cells was assayed by MTT and cell counting. By using PI method, the effects of mfn2 on the cell cycle distribution of MCF-7 were measured. Annexin-V/PI double labeling method was employed to detect the changes in apoptosis induced by chemotherapeutics before and after transfection. The results showed that the MCF-7 cells transfected with mfn2 gene could stably and highly express GFP protein. MTT assay revealed that after transfection of mfn2 cDNA, the proliferation of MCF-7 cells was significantly inhibited. DNA histogram showed that cells arrested in S phase, and the percentage of S phase cells was 42.7, 17.2 and 19.6 in mfn2 cDNA transfection group, blank plasmid transfection group and blank control group, respectively (P<0.05). The apoptosis ratio of the cells transfected with mfn2 gene was increased from 3.56% to 15.95%, that of the cells treated with camptothecin (CAMP) followed by mfn2 gene transfection was 69.6%, and that in blank plasmid transfection group and blank control group was 31.0% and 23.4% respectively (P<0.05). It was suggested that transfection of mfn2 gene could significantly inhibit the proliferation of MCF-7 cells and promote their sensitivity to CAMP with a synergic effect.
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Índice:
WPRIM
Asunto principal:
Camptotecina
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Ensayos de Selección de Medicamentos Antitumorales
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Transfección
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Regulación Neoplásica de la Expresión Génica
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Ciclo Celular
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Apoptosis
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Proteínas Mitocondriales
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Línea Celular Tumoral
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Proteínas Fluorescentes Verdes
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Proliferación Celular
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Journal of Huazhong University of Science and Technology (Medical Sciences)
Año:
2008
Tipo del documento:
Article