کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8716163 1587879 2018 30 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
ENPP1 Mutation Causes Recessive Cole Disease by Altering Melanogenesis
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی امراض پوستی
پیش نمایش صفحه اول مقاله
ENPP1 Mutation Causes Recessive Cole Disease by Altering Melanogenesis
چکیده انگلیسی
Cole disease is a genodermatosis of pigmentation following a strict dominant mode of inheritance. In this study, we investigated eight patients affected with an overlapping genodermatosis after recessive inheritance. The patients presented with hypo- and hyperpigmented macules over the body, resembling dyschromatosis universalis hereditaria in addition to punctuate palmoplantar keratosis. By homozygosity mapping and whole-exome sequencing, a biallelic p.Cys120Arg mutation in ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) was identified in all patients. We found that this mutation, like those causing dominant Cole disease, impairs homodimerization of the ENPP1 enzyme that is mediated by its two somatomedin-B-like domains. Histological analysis revealed structural and molecular changes in affected skin that were likely to originate from defective melanocytes because keratinocytes do not express ENPP1. Consistently, RNA-sequencing analysis of patient-derived primary melanocytes revealed alterations in melanocyte development and in pigmentation signaling pathways. We therefore conclude that germline ENPP1 cysteine-specific mutations, primarily affecting the melanocyte lineage, cause a clinical spectrum of dyschromatosis, in which the p.Cys120Arg allele represents a recessive and more severe form of Cole disease.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Investigative Dermatology - Volume 138, Issue 2, February 2018, Pages 291-300
نویسندگان
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