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barsell

01/03/10 8:02 PM

#310 RE: robjer #309

Evidence regarding the constituents of BN107 from BNVI publication:

" Here, we present the potential molecular mechanisms mediating the selective pro-apoptotic effect induced by BN107 and its principle terpene, oleanolic acid (OA), on ER- breast cancer cells.
... BN107, an extract rich in OA derivatives, caused rapid alterations in cholesterol homeostasis, presumably by depleting cholesterol in lipid rafts (LRs) which subsequently interfered with signaling mediated by LRs. We showed that BN107 or OA treatment in ER- breast cancer cells resulted in rapid and specific inhibition of LR-mediated survival signaling, namely mTORC1 and mTORC2 activities, by decreasing the levels of the mTOR/FRAP1, RAPTOR and RICTOR... This is the first report demonstrating possible concomitant inhibition of both mTORC1 and mTORC2 activities by modulating the levels of protein constituents present in these signaling complexes and thus provides a basis for future development of OA-based mTOR inhibitors. © 2009 UICC"