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Abstract Title:

Alpha-tomatine synergises with paclitaxel to enhance apoptosis of androgen-independent human prostate cancer PC-3 cells in vitro and in vivo.

Abstract Source:

Phytomedicine. 2013 Nov 15 ;20(14):1297-305. Epub 2013 Aug 4. PMID: 23920276

Abstract Author(s):

Sui-Ting Lee, Pooi-Fong Wong, John David Hooper, Mohd Rais Mustafa

Article Affiliation:

Sui-Ting Lee

Abstract:

Alpha (α)-tomatine, a major saponin found in tomato has been shown to inhibit the growth of androgen-independent prostate cancer PC-3 cells. The effects of α-tomatine in combination with the chemotherapeutic agent paclitaxel against PC-3 cells were investigated in the present study. Combined treatment with a sub-toxic dose of α-tomatine and paclitaxel significantly decreased cell viability with concomitant increase in the percentage of apoptotic PC-3 cells. The combined treatment, however, had no cytotoxic effect on the non-neoplastic prostate RWPE-1 cells. Apoptosis of PC-3 cells was accompaniedby the inhibition of PI3K/Akt pro-survival signaling, an increase in the expression of the pro-apoptotic protein BAD but a decrease in the expressions of anti-apoptotic proteins, Bcl-2 and Bcl-xL. Results from a mouse xenograft model showed the combined treatment completely suppressed subcutaneous tumor growth without significant side effects. Consistent with its in vitro anti-cancer effects, tumor materials from mice showed increased apoptosis of tumor cells with reduced protein expression of activated PI3K/Akt. These results suggest that the synergistic anti-cancer effects of paclitaxel andα-tomatine may be beneficial for refractory prostate cancer treatment.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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