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Erratum Free access | 10.1172/JCI36898E1

Cotargeting survival signaling pathways in cancer

Steven Grant

Find articles by Grant, S. in: JCI | PubMed | Google Scholar

Published October 1, 2008 - More info

Published in Volume 118, Issue 10 on October 1, 2008
J Clin Invest. 2008;118(10):3513–3513. https://doi.org/10.1172/JCI36898E1.
© 2008 The American Society for Clinical Investigation
Published October 1, 2008 - Version history
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Cotargeting survival signaling pathways in cancer
Steven Grant
Steven Grant
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Cotargeting survival signaling pathways in cancer

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Abstract

Mammalian target of rapamycin (mTOR) is a component of a signaling pathway (PTEN/PI3K/AKT) that is frequently dysregulated in cancer. However, its precise relationship to the MAPK cascade (Ras/Raf/MEK/ERK), another pathway often implicated in tumorigenesis, has not been well defined. Recent evidence from tissue specimens obtained from patients who have received mTOR inhibitors suggests that ERK may be activated in response to mTOR interruption. In this issue of the JCI, Waugh Kinkade et al. and Carracedo et al. examine the relationship between these pathways in prostate and breast cancer cell model systems (see the related articles beginning on pages 3051 and 3065, respectively). Their findings suggest a link between inhibition of mTOR and ERK activation, possibly reflecting interruption of a novel negative S6K1-dependent feedback loop. Significantly, both groups observed that simultaneous inhibition of MEK/ERK and mTOR resulted in substantially enhanced antitumor effects both in vitro and in vivo. Together, these findings suggest that concurrent interruption of complementary signaling pathways warrants further investigation in cancer therapy.

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Steven Grant

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Original citation: J. Clin. Invest.118:3003–3006 (2008). doi:10.1172/JCI36898.

Citation for this erratum: J. Clin. Invest.118:3513 (2008). doi:10.1172/JCI36898E1.

During the preparation of the manuscript, PDK1 was incorrectly defined in the Figure 1 legend. The correct definition is phosphoinositide-dependent kinase-1.

The JCI regrets the error.

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