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|Ref Type||Journal Article|
|Authors||Dubrovska A, Elliott J, Salamone RJ, Kim S, Aimone LJ, Walker JR, Watson J, Sauveur-Michel M, Garcia-Echeverria C, Cho CY, Reddy VA, Schultz PG|
|Title||Combination therapy targeting both tumor-initiating and differentiated cell populations in prostate carcinoma.|
|Journal||Clinical cancer research : an official journal of the American Association for Cancer Research|
|Date||2010 Dec 01|
|Abstract Text||The cancer stem cell hypothesis predicts that standard prostate cancer monotherapy eliminates bulk tumor cells but not a tumor-initiating cell population, eventually leading to relapse. Many studies have sought to determine the underlying differences between bulk tumor and cancer stem cells.Our previous data suggest that the PTEN/PI3K/AKT pathway is critical for the in vitro maintenance of CD133(+)/CD44(+) prostate cancer progenitors and, consequently, that targeting PI3K signaling may be beneficial in treatment of prostate cancer.Here, we show that inhibition of PI3K activity by the dual PI3K/mTOR inhibitor NVP-BEZ235 leads to a decrease in the population of CD133(+)/CD44(+) prostate cancer progenitor cells in vivo. Moreover, the combination of the PI3K/mTOR modulator NVP-BEZ235, which eliminates prostate cancer progenitor populations, and the chemotherapeutic drug Taxotere, which targets the bulk tumor, is significantly more effective in eradicating tumors in a prostate cancer xenograft model than monotherapy.This combination treatment ultimately leads to the expansion of cancer progenitors with a PTEN E91D mutation, suggesting that the analysis of PTEN mutations could predict therapeutic response to the dual therapy.|
|Molecular Profile||Treatment Approach|
|Gene Name||Source||Synonyms||Protein Domains||Gene Description||Gene Role|
|Therapy Name||Drugs||Efficacy Evidence||Clinical Trials|
|Drug Name||Trade Name||Synonyms||Drug Classes||Drug Description|
|Gene||Variant||Impact||Protein Effect||Variant Description||Associated with drug Resistance|
|Molecular Profile||Indication/Tumor Type||Response Type||Therapy Name||Approval Status||Evidence Type||Efficacy Evidence||References|
|Unknown unknown||prostate carcinoma||not applicable||Dactolisib||Preclinical||Actionable||In a preclinical study, treatment with BEZ235 resulted in a decrease in prostate cancer progenitor cells in culture and reduced tumor growth in prostate carcinoma xenograft models (PMID: 21138868).||21138868|