Objective Genome-wide association studies (GWAS) have identified >100 risk loci for systemic lupus erythematosus (SLE), but the disease genes at most loci remain unclear, hampering translation of these genetic discoveries. We aimed to prioritise genes underlying the 110 SLE loci that were identified in the latest East Asian GWAS meta-analysis. Methods We built gene expression predictive models in blood B cells, CD4(+) and CD8(+) T cells, monocytes, natural killer cells and peripheral blood cells of 105 Japanese individuals. We performed a transcriptome-wide association study (TWAS) using data from the latest genome-wide association meta-analysis of 208 370 East Asians and searched for candidate genes using TWAS and three data-driven computational approaches. Results TWAS identified 171 genes for SLE (p<1.0x10(-5)); 114 (66.7%) showed significance only in a single cell type; 127 (74.3%) were in SLE GWAS loci. TWAS identified a strong association between CD83 and SLE (p<7.7x10(-8)). Meta-analysis of genetic associations in the existing 208 370 East Asian and additional 1498 cases and 3330 controls found a novel single-variant association at rs72836542 (OR=1.11, p=4.5x10(-9)) around CD83. For the 110 SLE loci, we identified 276 gene candidates, including 104 genes at recently-identified SLE novel loci. We demonstrated in vitro that putative causal variant rs61759532 exhibited an allele-specific regulatory effect on ACAP1, and that presence of the SLE risk allele decreased ACAP1 expression. Conclusions Cell-level TWAS in six types of immune cells complemented SLE gene discovery and guided the identification of novel genetic associations. The gene findings shed biological insights into SLE genetic associations.
基金:
National Natural Science Foundation of China (NSFC) [31630021, 81881340424, 81803117, 82003328, 82003330, 81872516, 81573033, 81872527, 81830019, 81421001, 82173418]; Distinguished Young Scholar of Provincial Natural Science Foundation of Anhui [1808085J08]; National Program on Key Basic Research Project of China (973 Program) [2014CB541901]; Science Foundation of Ministry of Education of China [213018A]; Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-12-0600]; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [NRF-2021R1A6A1A03038899]; Basic Science Research Program through the National Research Foundation of Korea - Ministry of Science, ICT [2015R1C1A1A02036527, 2017R1E1A1A01076388]; National BioBank of Korea, Korea Disease Control and Prevention Agency, Republic of Korea [KBN-2018-031]; Department of Precision Medicine, Korea National Institute of Health, Republic of Korea [6637-301, 2022-NI-067-00]; Japan Agency for Medical Research and Development (AMED) [JP21kk0305013, JP21tm0424220, JP21ck0106642]; Japan Society for the Promotion of Science KAKENHI [JP20H00462]; BioBank Japan project; Ministry of Education, Culture, Sports, Sciences and Technology of the Japanese Government and AMED [17km0305002, 18km0605001]; Japan Orthopaedics and Traumatology Research Foundation, lnc [350]; RIKEN Junior Research Associate Program
第一作者单位:[1]Anhui Med Univ, Affiliated Hosp 1, Dept Dermatol, Hefei, Anhui, Peoples R China[2]Anhui Med Univ, Inst Dermatol, Affiliated Hosp 1, Hefei, Anhui, Peoples R China[3]Anhui Med Univ, Key Lab Dermatol, Minist Educ, Hefei, Anhui, Peoples R China[4]Inflammat & Immune Mediated Dis Lab Anhui Prov, Hefei, Anhui, Peoples R China[5]China Japan Friendship Hosp, Dept Dermatol, Beijing, Peoples R China[6]Univ Michigan, Dept Biostat, Ann Arbor, MI 48109 USA[7]Univ Michigan, Ctr Stat Genet, Ann Arbor, MI 48109 USA[8]Fudan Univ, Human Phenome Inst, Shanghai, Peoples R China
共同第一作者:
通讯作者:
通讯机构:[5]China Japan Friendship Hosp, Dept Dermatol, Beijing, Peoples R China[12]RIKEN Ctr Integrat Med Sci, Lab Stat & Translat Genet Anal, Yokohama, Kanagawa, Japan[14]Hanyang Univ, Dept Rheumatol, Hosp Rheumat Dis, Seoul, South Korea[15]Hanyang Univ, Inst Rheumatol Res, Seoul, South Korea[68]Shizuoka Prefectural Gen Hosp, Clin Res Ctr, Shizuoka, Japan[69]Univ Shizuoka, Sch Pharmaceut Sci, Dept Appl Genet, Shizuoka, Japan[*1]Laboratory for Statistical and Translational Genetics Analysis, RIKEN Center for Integrative Medical Sciences, Kanagawa, Japan[*2]Department of Dermatology, China-Japan Friendship Hospital, Beijing, People’s Republic of China[*3]Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea
推荐引用方式(GB/T 7714):
Yin Xianyong,Kim Kwangwoo,Suetsugu Hiroyuki,et al.Biological insights into systemic lupus erythematosus through an immune cell-specific transcriptome-wide association study[J].ANNALS of the RHEUMATIC DISEASES.2022,doi:10.1136/annrheumdis-2022-222345.
APA:
Yin, Xianyong,Kim, Kwangwoo,Suetsugu, Hiroyuki,Bang, So-Young,Wen, Leilei...&Bae, Sang-Cheol.(2022).Biological insights into systemic lupus erythematosus through an immune cell-specific transcriptome-wide association study.ANNALS of the RHEUMATIC DISEASES,,
MLA:
Yin, Xianyong,et al."Biological insights into systemic lupus erythematosus through an immune cell-specific transcriptome-wide association study".ANNALS of the RHEUMATIC DISEASES .(2022)