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Ref Type | Journal Article | ||||||||||||
PMID | (27073162) | ||||||||||||
Authors | Shen J, Xu L, Zhao Q | ||||||||||||
Title | Perifosine and ABT-737 synergistically inhibit lung cancer cells in vitro and in vivo. | ||||||||||||
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Abstract Text | Here we explored the potential synergism between the novel Bcl-2 antagonist ABT-737 and the AKT inhibitor perifosine in lung cancer cells. Our in vitro results showed that perifosine and ABT-737 synergistically induced growth inhibition and apoptosis in both established (A549 and H460 lines) and patient-derived lung cancer cells. The combined activity was dramatically more potent than either single agent. For the molecular study, we showed that perifosine downregulated Mcl-1 expression, thus potentiating ABT-737 lethality against lung cancer cells. Exogenous over-expression of Mcl-1 remarkably attenuated perifosine plus ABT-737 combo-induced lung cancer cell apoptosis. In vivo, perifosine and ABT-737 co-administration strikingly inhibited A549 lung cancer xenograft growth in nude mice. The combined treatment in vivo was again superior than single treatment establishing a synergistic activity. Mcl-1 expression was also downregulated in combo-treated A549 tumors. The results of this preclinical study support the feasibility of further investigation of the perifosine plus ABT-737 regimen in future lung cancer clinical tests. |
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