and inhibits its function. Hsp90 proteins play an important role in regulating the cell cycle,
cell growth, cell survival, apoptosis, angiogenesis, and oncogenesis.
Geldanamycin induces the degradation of proteins in tumor cells .such as v-Src, Bcr-Abl and p53 are mutated in preference to their normal cellular counterparts. This effect is
mediated via HSP90. Despite its potent anti-tumor potential of geldanamycin shows some important drawbacks as active ingredient
(ie, hepatotoxicity), which led to the development of geldanamycin analogs, particularly
analogs that derivatization at position 17: 17-AAG,17-DMAG.
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