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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2016, Volume : 4, Issue : 4
First page : (229) Last page : (237)
Article doi: http://dx.doi.org/10.18782/2320-7051.2360

Effect of Curcuminoids on MDR-1 Gene Expression in Multidrug Resistance KBChR-8-5 Human Cervical Cancer Cell Line

S. Revathy1* and S. Elumalai2
1Department of Plant Biology and Biotechnology, Presidency College (Autonomous), Chennai -600 005, Tamil Nadu, India
2Department of Biotechnology, University of Madras, Guindy campus, Chennai - 600 025 Tamil Nadu, India
*Corresponding Author E-mail: revathyrameshbio@gmail.com
Received: 19.08.2016  |  Revised: 27.08.2016   |  Accepted: 28.08.2016  

Abstract
Drug resistance is a major problem in cancer chemotherapy. The mechanism that has been most extensively investigated is the expression of the MDR-1 gene product, Pgp. The emergence of natural products as potential anti-MDR molecules is of particular significance, since many of these are essential components of the human diet, they are expected to possess fewer side effects and may possibly represent a new generation of MDR modulators. Curcuminoids are the major component present in turmeric. Here we demonstrate that curcuminoids inhibits the growth of drug resistant cancer cell lines (KBChR8-5) in a dose dependent manner, with IC50 values in the 5-25╬╝M range. In addition, MDR-1 gene expression was studied in curcuminoids treatment, it revealed that among three curcuminoids curcumin treated cells showed down-regulation and other two curcuminoids showed mild change in MDR-1 expression in comparison with control. In conclusion the Pure curcumin displayed poor anti-cancer activity in KBChR8-5 cell line, but curcumin inhibits MDR-1 gene expression which implies that it is not directly involved in cytotoxicity when compared with other two curcuminoids instead it inhibits MDR-1 gene product, P-gp (efflux pump). Curcumin in combination chemotherapy may increase accumulation of cytotoxic drugs by blocking efflux pump and significantly enhance the anti-cancer activity in the treatment of various cancers related to multidrug resistance.

Key words: Cytotoxicity, drug resistance, doxorubicin, modulators, sensitivity.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782


Cite this article: Revathy, S. and Elumalai, S., Effect of Curcuminoids on MDR-1 Gene Expression in Multidrug Resistance KBChR-8-5 Human Cervical Cancer Cell Line, Int. J. Pure App. Biosci. 4(4): 229-237 (2016). doi: http://dx.doi.org/10.18782/2320-7051.2360