tMfn2 gene transfer promotes vascular smooth-muscle cells apoptosis via activation of the mitochondrial cell death pathway / 中华心血管病杂志
Chinese Journal of Cardiology
;
(12): 639-643, 2009.
Artigo
em Chinês
| WPRIM
| ID: wpr-236436
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of tMfn2 gene transfer on promoting the apoptosis of vascular smooth-muscle cells (VSMCs).</p><p><b>METHODS</b>VSMCs were infected by adenovirus-mediated tMfn2 (Adv-tMfn2) or adenovirus-mediated Mfn2 (Adv-Mfn2). FACS analysis, cell death ELISA and TUNEL staining were used to investigate the role of tMfn2 and Adv-Mfn2 gene transfer on VSMCs apoptosis. Western blot was used to analyze the protein expression of p-Akt, Bcl-2, Bax and cleaved caspase-9.</p><p><b>RESULTS</b>FACS and ELISA results showed that tMfn2 was superior to Mfn2 in promoting VSMCs apoptosis and tMfn2 gene transfer induced VSMCs apoptosis in a time-dependent manner (P < 0.01). TUNEL staining evidenced that there were more positive-apoptotic VSMCs in tMfn2 group than that in Mfn2 group (P < 0.01). The protein expressions of phosphorylated Akt and Bcl-2 were significantly decreased, whereas Bax and cleaved caspase-9 protein expressions were significantly upregulated in tMfn2-transfected VSMCs.</p><p><b>CONCLUSIONS</b>tMfn2 transfer promoted apoptosis of VSMCs in a time dependent manner via the PI3K-Akt signaling pathway and mitochondrial apoptotic pathway.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Transfecção
/
Células Cultivadas
/
Adenoviridae
/
Apoptose
/
Proteínas Proto-Oncogênicas c-bcl-2
/
Biologia Celular
/
Proteínas Mitocondriais
/
Miócitos de Músculo Liso
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Membranas Mitocondriais
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Proteínas Proto-Oncogênicas c-akt
Limite:
Animais
Idioma:
Chinês
Revista:
Chinese Journal of Cardiology
Ano de publicação:
2009
Tipo de documento:
Artigo
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