RESUMO
BACKGROUND & OBJECTIVE: The malignant biological behaviors are enhanced in human ovarian cancer cell line RMG-1 after transfection of alpha1,2-fucosyl transferase (alpha1,2-FT) gene. This study was to investigate the influence of alpha1,2-FT gene transfection on cancer-related gene expression profile of RMG-1 cells. METHODS: Gene expressing vector pcDNA3.1-HFT-H and empty vector pcDNA3.1 were transfected into RMG-1 cells to produce RMG-1-H and RMG-1-C cells separately. Gene expression profiles of these two cell lines were detected by gene chip assay. The acquired data were inquired on the GoMiner online database. RESULTS: After transfection, comparing with those in RMG-1-C cells, 88 differentially expressed genes were identified in RMG-1-H cells: 60 were up-regulated and 28 were down-regulated. These genes are involved in protein binding, nucleotide binding, cell proliferation, DNA-dependent regulation of transcription, signal transduction, protein amino acid phosphorylation, transcription, cell adhesion, and so on. CONCLUSION: The transfection of alpha1,2-FT gene causes the changes of gene expression profile in ovarian cancer RMG-1 cells.
Assuntos
Fucosiltransferases/genética , Perfilação da Expressão Gênica , Análise de Sequência com Séries de Oligonucleotídeos , Neoplasias Ovarianas/genética , Linhagem Celular Tumoral , Proliferação de Células , Ciclina D1/metabolismo , Feminino , Fucosiltransferases/biossíntese , Fucosiltransferases/fisiologia , Regulação Neoplásica da Expressão Gênica , Humanos , Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo , Neoplasias Ovarianas/metabolismo , Neoplasias Ovarianas/patologia , RNA Mensageiro/metabolismo , Transdução de Sinais , Transfecção , Galactosídeo 2-alfa-L-FucosiltransferaseRESUMO
To explore the effect of alpha1,2-fucosyltransferase (alpha1,2-FT) gene on the biological behavior of ovarian carcinoma cells, the expression vector pcDNA3.1 -HFUT-H which containing human alpha1,2-FT gene coding region was constructed and transfected into ovarian carcinoma cell line RMG-I. alpha1,2-FT gene expression, Lewis y antigen expression, alpha1,2-FT activity, rates of cell growth and tumorogenesis in nude mice were compared before and after RMG-I being transfected. The transfection of alpha1,2-FT gene significantly increased the expression of alpha1,2-FT gene and Lewis y antigen in RMG-I cells. After the transfection, RMG-I cells showed remarkable improvement of alpha1,2-FT activity, cell proliferation, the ability of colony formation in soft agar and tumorogenesis in nude mice. The growth rates of alpha1,2-FT gene transfected RMG-I cells were obviously increased, presenting that the proportion of the cells in G2-M and S phases was obviously increased from 2.05% to 7.32% and from 23.95% to 33.27% respectively, and that of the cells in G1 phase was obviously decreased from 74.14% to 59.46%, as compared with the control group. These findings indicate that alpha1,2-FT and Lewis y antigen have the ability to enhance the proliferation and elevate the survival rates of RMG-I cells, which can promote the genesis and development of ovarian carcinoma.