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Objective: This study was designed to determinewhether regulatory regions p250 of c-fos gene wereresponsive to SeO2 and to seek the possible mechanisms of regulation. Methods: HeLa cells were transfected withplasmids p250-tk CAT containing upstream regulatingregions of c-fos gene. Cells were treated by SeO2 for 20 min. CAT expression in transfected cells was observed by thinlayered chromatography. Results: In transfected HeLa cells CAT expression showed obvious increase after exposure to SeO2, especially in 10 mmol/L and 30 mmol/L group (P<0.05). Conclusion: Through affecting regulatory regions p250 of c-fos gene, SeO2 exerted biological effect on tumor cells. SeO2possibly had anti-tumor effects.
Methods: HeLa cells were transfected with plasmids p250-tk CAT containing upstream regulatory regs of c-fos gene. Cells were treated by SeO2 for 20 min. CAT expression in transfected cells was observed by thinlayered chromatography. Results: In transfected HeLa cells CAT expression showed clear increase after exposure to SeO2, especially in 10 mmol / L and 30 mmol / L groups (P <0.05 SeO2possibly had anti-tumor effects. SeO2possibly had anti-tumor effects.