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Enhanced expression of human vimentin intermediate filaments in hepatocellular carcinoma cells decreases their proliferative and invasive abilities in vitro / 中华肿瘤杂志
Chinese Journal of Oncology ; (12): 408-412, 2008.
Artigo em Chinês | WPRIM | ID: wpr-357411
ABSTRACT
<p><b>OBJECTIVE</b>Expression of vimentin in carcinoma cells is a marker for poor prognosis in patients. The aim of this investigation was to assess the influence of vimentin on the characteristics of carcinoma cells.</p><p><b>METHODS</b>The full-length vimentin gene open reading frame (1401 base pairs) was cloned into the plasmid vector pcDNA 3.1 (+), and these vectors were used to stably transfect the human hepatocellular carcinoma HepG2 cell line. Vimentin gene expression was evaluated by RT-PCR and Western blot. Proliferative activity and invasive potential of tumor cells were determined by the CellTiter 96 aqueous one solution cell proliferation assay and BioCoat GFR Matrigel invasion chamber, respectively.</p><p><b>RESULTS</b>DNA sequencing and restriction endonuclease digestion analysis demonstrated that the recombinant vector was correctly cloned. The stable cell line demonstrated a higher vimentin RNA and protein expression. However, both proliferative and invasive abilities of the cells were reduced in vitro ( P < 0.05).</p><p><b>CONCLUSION</b>A recombinant plasmid pcDNA3. 1-VIM is successfully constructed and a carcinoma cell line HepG2-pV highly expressing vimentin is obtained. Recombinant vimentin protein suppresses the proliferative and invasive abilities of HepG2 cells, suggesting that it might decrease malignant phenotype of tumor cells in vitro. This work makes a foundation for further study on the relationship between vimentin and biological phenotype of carcinoma cells.</p>
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Plasmídeos / Vimentina / Proteínas Recombinantes / RNA Mensageiro / Transfecção / Regulação Neoplásica da Expressão Gênica / Movimento Celular / Fases de Leitura Aberta / Proliferação de Células / Células Hep G2 Tipo de estudo: Estudo prognóstico Limite: Humanos Idioma: Chinês Revista: Chinese Journal of Oncology Ano de publicação: 2008 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Plasmídeos / Vimentina / Proteínas Recombinantes / RNA Mensageiro / Transfecção / Regulação Neoplásica da Expressão Gênica / Movimento Celular / Fases de Leitura Aberta / Proliferação de Células / Células Hep G2 Tipo de estudo: Estudo prognóstico Limite: Humanos Idioma: Chinês Revista: Chinese Journal of Oncology Ano de publicação: 2008 Tipo de documento: Artigo