Title |
A mutation in the Cdon gene potentiates congenital nevus development mediated by NRASQ61K
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Published in |
Pigment Cell & Melanoma Research, June 2016
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DOI | 10.1111/pcmr.12487 |
Pubmed ID | |
Authors |
Arash Chitsazan, Blake Ferguson, Ramesh Ram, Pamela Mukhopadhyay, Herlina Y. Handoko, Brian Gabrielli, Peter H Soyer, Grant Morahan, Graeme J. Walker |
Abstract |
Congenital nevi develop before birth, and sometimes cover large areas of the body. They are presumed to arise from the acquisition of a gene mutation in an embryonic melanocyte that becomes trapped in the dermis during development. Mice bearing the Cdk4(R24C) ::Tyr-NRAS(Q) (61K) transgenes develop congenital nevus-like lesions by post natal day 10, from melanocytes escaping the confines of hair follicles. We combined these mice with the Collaborative Cross (CC), a resource that enables identification of modifier genes for complex diseases (those where multiple genes are involved). We examined variation in nevus cell density in 66 CC strains and mapped a large effect quantitative trait locus (QTL) controlling nevus cell density to murine chromosome 9. The best candidate for a gene that exacerbates congenital nevus development in the context of an NRAS mutation is Cdon, a positive regulator of sonic hedgehog (Shh) that is expressed mainly in keratinocytes. This article is protected by copyright. All rights reserved. |
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