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Alteration of PTEN gene expression affects the migration of human airway smooth muscle cells in vitro / 南方医科大学学报
Journal of Southern Medical University ; (12): 403-408, 2011.
Artigo em Chinês | WPRIM | ID: wpr-307922
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the changes in human airway smooth muscle cell (HASMC) migration and related signaling pathway after interference with PTEN gene expression.</p><p><b>METHOD</b>HASMCs were infected with an adenovirus vector and RNA interference vector of human PTEN gene to establish the cell model with PTEN gene over-expression (Ad-GFP-PTEN-HASMC) and one with PTEN gene silencing (Ad-shPTEN-HASMC), using Ad-GFP-infected and a blank cells as the negative controls and LY294002 as the positive control. Fluorescence microscopy and flow cytometric analysis were used to evaluate the transfection efficiency, and Western blotting was performed to examine the expression of PTEN and the activation of AKT and ERK1/2 signal pathway. Transwell assay and wound healing assay were used to assess the migration of HASMCs.</p><p><b>RESULTS</b>The adenovirus over-expression vector and RNA interference vector significantly affected the expression of human PTEN gene. Up-regulation of PTEN gene resulted in a slow-down of the HASMC migration, an inhibition of PI3K/AKT signal pathway at the protein level but no changes in Ras-Raf-MEK1/2-ERK1/2 signal pathway. Down-regulated PTEN gene expression, however, was not associated with an enhancement of HASMC migration, but activated PI3K/AKT signal pathway and inhibited Ras-Raf-MEK1/2-ERK1/2 signal pathway.</p><p><b>CONCLUSION</b>Upregulation of PTEN gene can effectively inhibit airway smooth muscle cell migration, the effect of which is probably mediated by the PI3K/AKT pathway.</p>
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Patologia / Brônquios / Transfecção / Expressão Gênica / Movimento Celular / Células Cultivadas / Adenoviridae / Biologia Celular / Miócitos de Músculo Liso / Interferência de RNA Limite: Humanos Idioma: Chinês Revista: Journal of Southern Medical University Ano de publicação: 2011 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Patologia / Brônquios / Transfecção / Expressão Gênica / Movimento Celular / Células Cultivadas / Adenoviridae / Biologia Celular / Miócitos de Músculo Liso / Interferência de RNA Limite: Humanos Idioma: Chinês Revista: Journal of Southern Medical University Ano de publicação: 2011 Tipo de documento: Artigo