PMID- 33995358 OWN - NLM STAT- MEDLINE DCOM- 20210920 LR - 20240402 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 12 DP - 2021 TI - High-Resolution Analysis Identifies High Frequency of KIR-A Haplotypes and Inhibitory Interactions of KIR With HLA Class I in Zhejiang Han. PG - 640334 LID - 10.3389/fimmu.2021.640334 [doi] LID - 640334 AB - Killer cell immunoglobulin-like receptors (KIR) interact with human leukocyte antigen (HLA) class I molecules, modulating critical NK cell functions in the maintenance of human health. Characterizing the distribution and characteristics of KIR and HLA allotype diversity across defined human populations is thus essential for understanding the multiple associations with disease, and for directing therapies. In this study of 176 Zhejiang Han individuals from Southeastern China, we describe diversity of the highly polymorphic KIR and HLA class I genes at high resolution. KIR-A haplotypes, which carry four inhibitory receptors specific for HLA-A, B or C, are known to associate with protection from infection and some cancers. We show the Chinese Southern Han from Zhejiang are characterized by a high frequency of KIR-A haplotypes and a high frequency of C1 KIR ligands. Accordingly, interactions of inhibitory KIR2DL3 with C1(+)HLA are more frequent in Zhejiang Han than populations outside East Asia. Zhejiang Han exhibit greater diversity of inhibitory than activating KIR, with three-domain inhibitory KIR exhibiting the greatest degree of polymorphism. As distinguished by gene copy number and allele content, 54 centromeric and 37 telomeric haplotypes were observed. We observed 6% of the population to have KIR haplotypes containing large-scale duplications or deletions that include complete genes. A unique truncated haplotype containing only KIR2DL4 in the telomeric region was also identified. An additional feature is the high frequency of HLA-B*46:01, which may have arisen due to selection pressure from infectious disease. This study will provide further insight into the role of KIR and HLA polymorphism in disease susceptibility of Zhejiang Chinese. CI - Copyright (c) 2021 Tao, He, Kichula, Wang, He, Norman and Zhu. FAU - Tao, Sudan AU - Tao S AD - Blood Center of Zhejiang Province, Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China. FAU - He, Yanmin AU - He Y AD - Blood Center of Zhejiang Province, Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China. FAU - Kichula, Katherine M AU - Kichula KM AD - Division of Biomedical Informatics and Personalized Medicine, and Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States. FAU - Wang, Jielin AU - Wang J AD - Blood Center of Zhejiang Province, Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China. FAU - He, Ji AU - He J AD - Blood Center of Zhejiang Province, Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China. FAU - Norman, Paul J AU - Norman PJ AD - Division of Biomedical Informatics and Personalized Medicine, and Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States. FAU - Zhu, Faming AU - Zhu F AD - Blood Center of Zhejiang Province, Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China. LA - eng GR - R01 AI128775/AI/NIAID NIH HHS/United States GR - R56 AI151549/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20210430 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Receptors, KIR) SB - IM MH - Asian People/genetics MH - Haplotypes MH - Histocompatibility Antigens Class I/*genetics MH - Humans MH - Killer Cells, Natural/immunology MH - Lymphocyte Activation/immunology MH - Receptors, KIR/*genetics PMC - PMC8121542 OTO - NOTNLM OT - HLA OT - KIR OT - KIR/HLA interaction OT - NK cells OT - Zhejiang Han population COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/05/18 06:00 MHDA- 2021/09/21 06:00 PMCR- 2021/01/01 CRDT- 2021/05/17 06:04 PHST- 2020/12/11 00:00 [received] PHST- 2021/04/07 00:00 [accepted] PHST- 2021/05/17 06:04 [entrez] PHST- 2021/05/18 06:00 [pubmed] PHST- 2021/09/21 06:00 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2021.640334 [doi] PST - epublish SO - Front Immunol. 2021 Apr 30;12:640334. doi: 10.3389/fimmu.2021.640334. eCollection 2021.