HLA-G haplotype structure shows good conservation between different populations and good correlation with high,normal and low soluble HLA-G expression |
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Authors: | Julie Di Cristofaro Dima El Moujally Anaïs Agnel Stéphane Mazières Martí Cortey Agnès Basire Jacques Chiaroni Christophe Picard |
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Institution: | 1. Aix-Marseille Université, CNRS, EFS, ADES UMR 7268, 13916 Marseille, France;2. Laboratoire d’immunogénétique, Etablissement Français du Sang Alpes Méditerranée;149 bd Baille, 13005 Marseille, France |
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Abstract: | HLA-G molecule has considerable impact in various clinical fields, therefore many studies attempted to predict its expression based on HLA-G genotype. These studies have focused on polymorphisms in either the coding region or in one of the two untranslated regions (UTR) of the gene. The aim of our study was to determine if HLA-G haplotype defined based on SNPs 5′ and 3′UTR could be used to predict soluble HLA-G expression in unstimulated individuals. Our findings showed that HLA-G haplotype structure was well conserved between distant populations and that the defined haplotypes were correlated with high, normal and low HLA-G soluble secretors. In conclusion, we showed that this genotyping strategy based on the use of a few selected SNPs rather than isolated SNP analysis allows reliable HLA-G expression in all populations. This strategy could be useful in a number of clinical settings, e.g., predicting graft compatibility immunogenetic laboratories. |
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Keywords: | SNP(s) single nucleotide polymorphism(s) CRP C-reactive protein LD linkage disequilibrium NK natural killer CTL cytotoxic T-lymphocytes VBMD volunteer bone marrow donors sHLA-G soluble HLA-G URR upstream regulatory region UTR untranslated region ins/del insertion/deletion |
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