PMID- 15900488 OWN - NLM STAT- MEDLINE DCOM- 20050707 LR - 20181113 IS - 0093-7711 (Print) IS - 0093-7711 (Linking) VI - 57 IP - 3-4 DP - 2005 May TI - The HLA-G genotype is associated with IL-10 levels in activated PBMCs. PG - 172-81 AB - Human leukocyte antigen (HLA)-G is an MHC class Ib molecule that is expressed at the feto-maternal interface during pregnancy. However, recent results have also shown that it may have important functions as an immuno-modulatory factor in adult life. Differences in the pattern of alternative splicing and in the stability of HLA-G mRNA transcripts have been associated with HLA-G polymorphisms, especially a 14 bp deletion/insertion polymorphism in the 3' untranslated region of the HLA-G gene. We have investigated the secretion of HLA-G5/soluble HLA-G1 and interleukin-10 (IL-10) in lipopolysaccharide (LPS)-activated peripheral blood mononuclear lymphocytes (PBMCs) in relation to the HLA-G 14 bp genotype. No HLA-G5/sHLA-G1 could be detected in the non-activated control PBMC culture media, and there were no significant differences among the three HLA-G 14 bp genotypes regarding IL-10 concentrations. In LPS-activated PBMC cultures, no significant differences among the three HLA-G 14 bp genotypes regarding HLA-G5/sHLA-G1 concentrations were observed. However, this was in contrast to the IL-10 levels (P=0.0004, Kruskal-Wallis test). The +14/+14 bp PBMC samples expressed higher levels of IL-10 when compared to the -14/+14 bp genotype and the -14/-14 bp genotype. Interestingly, the IL-10 G/G polymorphism at position -1082 was more frequent in the +14/+14 bp genotype (P=0.024, chi2 test). These results support an autocrine loop between HLA-G5/sHLA-G1 and IL-10 expression in activated PBMCs, which may result in higher IL-10 levels in +14/+14 bp HLA-G genotypes. FAU - Rizzo, Roberta AU - Rizzo R AD - Department of Experimental and Diagnostic Medicine, University of Ferrara, Via Luigi Borsari 46, 44100 Ferrara, Italy. rbr@unife.it FAU - Hviid, Thomas Vauvert F AU - Hviid TV FAU - Stignani, Marina AU - Stignani M FAU - Balboni, Alessandra AU - Balboni A FAU - Grappa, Maria Teresa AU - Grappa MT FAU - Melchiorri, Loredana AU - Melchiorri L FAU - Baricordi, Olavio R AU - Baricordi OR LA - eng PT - Journal Article DEP - 20050402 PL - United States TA - Immunogenetics JT - Immunogenetics JID - 0420404 RN - 0 (3' Untranslated Regions) RN - 0 (HLA Antigens) RN - 0 (HLA-G Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Lipopolysaccharides) RN - 130068-27-8 (Interleukin-10) SB - IM MH - 3' Untranslated Regions MH - Adult MH - Exons MH - Female MH - Genetic Linkage MH - Genotype MH - HLA Antigens/blood/*genetics MH - HLA-G Antigens MH - Histocompatibility Antigens Class I/blood/*genetics MH - Humans MH - In Vitro Techniques MH - Interleukin-10/*blood/genetics MH - Lipopolysaccharides/pharmacology MH - Lymphocyte Activation MH - Lymphocytes/drug effects/immunology MH - Male MH - Middle Aged MH - Polymorphism, Genetic MH - Polymorphism, Single Nucleotide EDAT- 2005/05/19 09:00 MHDA- 2005/07/08 09:00 CRDT- 2005/05/19 09:00 PHST- 2005/01/31 00:00 [received] PHST- 2005/02/03 00:00 [accepted] PHST- 2005/05/19 09:00 [pubmed] PHST- 2005/07/08 09:00 [medline] PHST- 2005/05/19 09:00 [entrez] AID - 10.1007/s00251-005-0788-0 [doi] PST - ppublish SO - Immunogenetics. 2005 May;57(3-4):172-81. doi: 10.1007/s00251-005-0788-0. Epub 2005 Apr 2.