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Inductoin of Radioresistance by Overexpression of Glutathione S-Transferase K1 (hGSTK1) in MCF-7 Cells / 대한방사선종양학회지
The Journal of the Korean Society for Therapeutic Radiology and Oncology ; : 381-388, 2001.
Artículo en Coreano | WPRIM | ID: wpr-16895
ABSTRACT

PURPOSE:

This study was conducted to assess the effects of x-irradiation on the expression of the novel glutathione S-transferase K1 gene. MATERIALS AND

METHODS:

Human glutathione S-transferase K1 (hGSTK1) DNA was purified and ligated to a pcDNA3.1/Myc-His(+) vector for the overexpression of hGSTK1 gene. MCF-7 cells were transfected with or without the recombinant hGSTK1 gene, and irradiated with 6 MV x-ray. After incubation of 14 days, cell survival was measured and compared. The expression of hGSTK1 and the effect of x- irradiation on hGSTK1 expression were also estimated in MCF-7 cells transfected with or without the hGSTK1 gene by RT-PCR.

RESULTS:

Following 2 to 12 Gy of x-irradiation, the cell survivals were higher in the MCF-7 cells transfected with the hGSTK1 gene than in those without transfection. Despite the higher cell survival in the hGSTK1-transfected cells, RT-PCR for hGSTK1 mRNA revealed no significant differences according to radiation dose, fractionation, and time after irradiation.

CONCLUSION:

The MCF-7 cells transfected with the hGSTK1 gene showed higher cell survival than those without transfection of the gene. The hGSTK1 gene might be associated with the radiosensitivity of MCF-7 cell line and further analysis should be needed.
Asunto(s)
Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Tolerancia a Radiación / ADN / ARN Mensajero / Transfección / Supervivencia Celular / Células MCF-7 / Glutatión / Glutatión Transferasa Límite: Humanos Idioma: Coreano Revista: The Journal of the Korean Society for Therapeutic Radiology and Oncology Año: 2001 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Tolerancia a Radiación / ADN / ARN Mensajero / Transfección / Supervivencia Celular / Células MCF-7 / Glutatión / Glutatión Transferasa Límite: Humanos Idioma: Coreano Revista: The Journal of the Korean Society for Therapeutic Radiology and Oncology Año: 2001 Tipo del documento: Artículo