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Inactivation of the CRL4-CDT2-SET8/p21 Ubiquitylation and Degradation Axis Underlies the Therapeutic Efficacy of Pevonedistat in Melanoma

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Journal EBioMedicine
Date 2016 Jun 23
PMID 27333051
Citations 41
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Abstract

Research In Context: The identification of new molecular targets and effective inhibitors is of utmost significance for the clinical management of melanoma. This study identifies CDT2, a substrate receptor for the CRL4 ubiquitin ligase, as a prognostic marker and therapeutic target in melanoma. CDT2 is required for melanoma cell proliferation and inhibition of CRL4(CDT2) by pevonedistat suppresses melanoma in vitro and in vivo through the induction of DNA rereplication and senescence through the stabilization of the CRL4(CDT2) substrates p21 and SET8. Pevonedistat also synergizes with vemurafenib in vivo and suppresses vemurafenib-resistant melanoma cells. These findings show a significant promise for targeting CRL4(CDT2) therapeutically.

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