D-Pinitol Promotes Apoptosis in MCF-7 Cells via Induction of p53 and Bax and Inhibition of Bcl-2 and NF-κB

  • Rengarajan, Thamaraiselvan (Department of Pharmacology and Environmental Toxicology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras) ;
  • Nandakumar, Natarajan (Department of Pharmacology and Environmental Toxicology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras) ;
  • Rajendran, Peramaiyan (NPO-International Laboratory of Biochemistry) ;
  • Haribabu, Lingaiah (Department of Pharmacology and Environmental Toxicology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras) ;
  • Nishigaki, Ikuo (NPO-International Laboratory of Biochemistry) ;
  • Balasubramanian, Maruthaiveeran Periyasamy (Department of Pharmacology and Environmental Toxicology, Dr. ALM PG Institute of Basic Medical Sciences, University of Madras)
  • Published : 2014.02.28


Development of drugs from natural products has been undergoing a gradual evoluation. Many plant derived compounds have excellent therapeutic potential against various human ailments. They are important sources especially for anticancer agents. A number of promising new agents are in clinical development based on their selective molecular targets in the field of oncology. D-pinitol is a naturally occurring compound derived from soy which has significant pharmacological activitites. Therefore we selected D-pinitol in order to evaluate apoptotic potential in the MCF-7 cell line. Human breast cancer cells were treated with different concentrations of D-pinitol and cytotoxicity was measured by MTT and LDH assays. The mechanism of apoptosis was studied with reference to expression of p53, Bcl-2, Bax and NF-kB proteins. The results revealed that D-pinitol significantly inhibited the proliferation of MCF-7 cells in a concentration-dependent manner, while upregulating the expression of p53, Bax and down regulating Bcl-2 and NF-kB. Thus the results obtained in this study clearly vindicated that D-pinitol induces apotosis in MCF-7 cells through regulation of proteins of pro- and anti-apoptotic cascades.


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