مشخصات مقاله

مشخصات مقاله
The apoptotic effects of sirtuin1 inhibitor on the MCF-7 and MRC-5 cell lines عنوان مقاله:
Original Article نوع مقاله:
دارای امتیاز علمی پژوهشی (درجه 2) اعتبار مقاله:

Research in Pharmaceutical Sciences نام کامل مجله:
0 Impact Factor:
2013-05-25 تاریخ انتشار:
ISSN چاپی:
ISSN الکترونیک:
8 شماره جلد:
2 شماره نسخه:
79 شماره صفحه شروع:
Label لینک مقاله:
شماره طرح پژوهشی:
5 نوع طرح پژوهشی:

خلاصه مقاله
Sirtuin1 (SIRT1) is an enzyme that deacetylates histones and several nonhistone proteins including p53 during stress and plays an important role in the survival of tumor cells. Hereby, this study describes the potency of salermide as a SIRT1 inhibitor to induce apoptosis in the MCF-7 and MRC-5 cell lines. MCF7 and MRC-5 cell lines were cultured in RPMI-1640 and treated with or without salermide at concentration of 80.56 μmol/L, based on the half-maximal inhibitory concentration (IC50) index at different times (24, 48 and72 h). The IC50 value was established for the salermide in MCF-7. The percentage of apoptotic cells was measured by flow cytometry. Real-time quantitative RT-PCR was performed to estimate the mRNA expression of sirtuin1 in MCF-7 and MRC-5 with salermide at different times. ELISA and Bradford protein techniques were used to detect endogenous levels of total and acetylated p53 protein generated in MCF-7 and MRC-5 cells. Our findings indicated that salermide can induce apoptosis in MCF-7 significantly more effective than MRC-5 cells. We showed that the expression of SIRT1 was dramatically down-regulated by increasing the time of salermide treatment in MCF-7 but not MRC-5 and that the acetylated and total p53 protein levels were increased more in MCF-7 than MRC-5. Salermide, by decreasing the expression of sirtuin1 gene, can induce acetylation of P53 protein and consequently induce significant cell death in MCF-7 that was well tolerated in MRC-5.
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