A mammalian functional-genetic approach to characterizing cancer therapeutics.

A mammalian functional-genetic approach to characterizing cancer therapeutics.
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DOI:
10.1038/nchembio.503
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发表时间:
2011-02
影响因子:
14.8
通讯作者:
Hemann, Michael T.
Hemann, Michael T.
中科院分区:
生物学1区
文献类型:
--
作者:
Jiang, Hai;Pritchard, Justin R.;Williams, Richard T.;Lauffenburger, Douglas A.;Hemann, Michael T.

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Identifying mechanisms of drug action remains a fundamental impediment to the development and effective use of chemotherapeutics. Here we describe an RNA interference (RNAi)-based strategy to characterize small-molecule function in mammalian cells. By examining the response of cells expressing short hairpin RNAs (shRNAs) to a diverse selection of chemotherapeutics, we could generate a functional shRNA signature that was able to accurately group drugs into established biochemical modes of action. This, in turn, provided a diversely sampled reference set for high-resolution prediction of mechanisms of action for poorly characterized small molecules. We could further reduce the predictive shRNA target set to as few as eight genes and, by using a newly derived probability-based nearest-neighbors approach, could extend the predictive power of this shRNA set to characterize additional drug categories. Thus, a focused shRNA phenotypic signature can provide a highly sensitive and tractable approach for characterizing new anticancer drugs.
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