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Variants of the melanocyte stimulating hormone receptor gene are associated with red hair and fair skin in humans

Valverde, P., Healy, Eugene, Jackson, I., Rees, J.L. and Thody, A.J. (1995) Variants of the melanocyte stimulating hormone receptor gene are associated with red hair and fair skin in humans Nature Genetics, 11, (3), pp. 328-330. (doi:10.1038/ng1195-328). (PMID:7581459).

Record type: Article

Abstract

Melanin pigmentation protects the skin from the damaging effects of ultraviolet radiation (UVR). There are two types of melanin, the red phaeomelanin and the black eumelanin, both of which are present in human skin. Eumelanin is photoprotective whereas phaeomelanin, because of its potential to generate free radicals in response to UVR, may contribute to UV-induced skin damage. Individuals with red hair have a predominance of phaeomelain in hair and skin and/or a reduced ability to produce eumelanin, which may explain why they fail to tan and are at risk from UVR. In mammals the relative proportions of phaeomelanin and eumelanin are regulated by melanocyte stimulating hormone (MSH), which acts via its receptor (MC1R), on melanocytes, to increase the synthesis of eumelanin and the product of the agouti locus which antagonises this action. In mice, mutations at either the MC1R gene or agouti affect the pattern of melanogenesis resulting in changes in coat colour. We now report the presence of MC1R gene sequence variants in humans. These were found in over 80% of individuals with red hair and/or fair skin that tans poorly but in fewer than 20% of individuals with brown or black hair and in less than 4% of those who showed a good tanning response. Our findings suggest that in humans, as in other mammals, the MC1R is a control point in the regulation of pigmentation phenotype and, more importantly, that variations in this protein are associated with a poor tanning response.

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Published date: November 1995
Organisations: Clinical & Experimental Sciences

Identifiers

Local EPrints ID: 334230
URI: http://eprints.soton.ac.uk/id/eprint/334230
ISSN: 1061-4036
PURE UUID: 7dbb5ffa-d721-496b-bc0d-c7021a290ff8

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Date deposited: 14 Mar 2012 12:45
Last modified: 18 Jul 2017 06:12

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Contributors

Author: P. Valverde
Author: Eugene Healy
Author: I. Jackson
Author: J.L. Rees
Author: A.J. Thody

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