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Cancer Invest. 2011 Jan;29(1):12-20. doi: 10.3109/07357907.2010.535053.

Silibinin-induced apoptosis in MCF7 and T47D human breast carcinoma cells involves caspase-8 activation and mitochondrial pathway.

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Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.


Silibinin, a natural flavonoid, under phase I/II clinical trial in prostate cancer patients was aimed to evaluate its chemotherapeutic potential in human breast cancer cell MCF7 and T47D. Results showed that T47D cells were found to be more sensitive to silibinin than MCF7 as observed by proliferation, clonogenic, and apoptotic assays, which was abrogated by pan-caspase inhibitor but remained unaffected by p53 inhibitor. Apoptotic events in both cell types differ temporally and also by magnitude that involved mitochondrial and caspase-8 activation pathway. These results have relevance in understanding silibinin treatment to breast tumor.

[Indexed for MEDLINE]

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