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中国汉族人群MC1R基因多态与皮肤颜色等表型特征关联研究

, PP. 103-110

Keywords: MC1R基因,SNP,皮肤颜色,汉族人群,关联研究

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Abstract:

皮肤癌是一种比较常见的肿瘤,在西方人群中研究表明,通过影响皮肤颜色等色素表型特征,黑色素生成通路中相关基因多态性(〖STBX〗MC1R〖STB3〗等)可增加皮肤癌发生风险.本研究首次在中国汉族人群中选择〖STBX〗MC1R〖STB3〗基因编码区的多态位点为研究对象,分析其与中国汉族人群的皮肤颜色、对阳光的敏感性、雀斑情况及头发颜色的关联性.在〖STBX〗MC1R〖STB3〗基因编码区发现7个SNP位点:c.200G>A,c.274G>A,c.359T>C,c.421G>A,c.488G>A,c.497C>G和c.942A>G.其中c.421G>A为新发现的SNP位点,c.497C>G则首次在中国汉族人群中报道.c.942A>G与皮肤颜色相关,其突变纯合基因型GG与皮肤颜色浅显著相关(P=0.044,OR=0.16,95%CI:0.03~0.95).c.359T>C杂合基因型TC与雀斑数目多显著相关(P=0.040,OR=5.76,95%CI:1.05~31.53),表明〖STBX〗MC1R〖STB3〗基因多态与中国汉族人群的皮肤颜色等色素表型特征具有一定相关性,为相关临床研究提供了参考.

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