Among multiple sclerosis(MS)susceptibility genes,the strongest non-human leukocyte antigen(HLA)signal in the Italian population maps to the TNFSF14 gene encoding LIGHT,a glycoprotein involved in dendritic cell(DC)matu...Among multiple sclerosis(MS)susceptibility genes,the strongest non-human leukocyte antigen(HLA)signal in the Italian population maps to the TNFSF14 gene encoding LIGHT,a glycoprotein involved in dendritic cell(DC)maturation.Through fine-mapping in a large Italian dataset(4,198 patients with MS and3,903 controls),we show that the TNFSF14 intronic SNP rs1077667 is the primarily MS-associated variant in the region.Expression quantitative trait locus(e QTL)analysis indicates that the MS risk allele is significantly associated with reduced TNFSF14 messenger RNA levels in blood cells,which is consistent with the allelic imbalance in RNA-Seq reads(P<0.0001).The MS risk allele is associated with reduced levels of TNFSF14 gene expression(P<0.01)in blood cells from 84 Italian patients with MS and 80 healthy controls(HCs).Interestingly,patients with MS are lower expressors of TNFSF14 compared to HC(P<0.007).Individuals homozygous for the MS risk allele display an increased percentage of LIGHT-positive peripheral blood myeloid DCs(CD11 c+,P=0.035)in 37 HCs,as well as in in vitro monocyte-derived DCs from 22 HCs(P=0.04).Our findings suggest that the intronic variant rs1077667 alters the expression of TNFSF14 in immune cells,which may play a role in MS pathogenesis.展开更多
基金supported by the Italian Foundation of Multiple Sclerosis(FISM,2011/R/142015/R/10,2019/R-Multi/033)by the Italian Ministry of Health(RF-2016-02361294)the AGING Project for Department of Excellence at the Department of Translational Medicine(DIMET),Universitàdel Piemonte Orientale,Novara,Italy+1 种基金supported by Consorzio Interuniversitario di Biotecnologie(CIB)partially supported by Multiple MS project(Horizon 2020 European Grant 733161),Stockholm。
文摘Among multiple sclerosis(MS)susceptibility genes,the strongest non-human leukocyte antigen(HLA)signal in the Italian population maps to the TNFSF14 gene encoding LIGHT,a glycoprotein involved in dendritic cell(DC)maturation.Through fine-mapping in a large Italian dataset(4,198 patients with MS and3,903 controls),we show that the TNFSF14 intronic SNP rs1077667 is the primarily MS-associated variant in the region.Expression quantitative trait locus(e QTL)analysis indicates that the MS risk allele is significantly associated with reduced TNFSF14 messenger RNA levels in blood cells,which is consistent with the allelic imbalance in RNA-Seq reads(P<0.0001).The MS risk allele is associated with reduced levels of TNFSF14 gene expression(P<0.01)in blood cells from 84 Italian patients with MS and 80 healthy controls(HCs).Interestingly,patients with MS are lower expressors of TNFSF14 compared to HC(P<0.007).Individuals homozygous for the MS risk allele display an increased percentage of LIGHT-positive peripheral blood myeloid DCs(CD11 c+,P=0.035)in 37 HCs,as well as in in vitro monocyte-derived DCs from 22 HCs(P=0.04).Our findings suggest that the intronic variant rs1077667 alters the expression of TNFSF14 in immune cells,which may play a role in MS pathogenesis.
