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Wang T, Qi J, Wang M, Xu H, Wu J, Shang L, Chen L, Li Y. Correlation between human leukocyte antigen ligands and killer cell immunoglobulin-like receptors in aplastic anemia patients from Shaanxi Han. Immunogenetics 2023; 75:445-454. [PMID: 37592108 DOI: 10.1007/s00251-023-01316-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/15/2023] [Indexed: 08/19/2023]
Abstract
Regulating natural killer (NK) cell responses in hematological malignancies largely depend on molecular interactions between killer cell immunoglobulin-like receptors (KIR) and human leukocyte antigen (HLA) class I ligands. The goal of the current study was to examine the key functions of KIR genes, gene combinations of KIR-HLA, and KIR genotypes in genetic predisposition to aplastic anemia (AA). Herein, the genotyping of 16 KIR genes and HLA-A, -B, and -C ligands were performed in 72 AA patients and 150 healthy controls using PCR evaluations with sequence-specific primers using standard assays. According to the obtained results, AA patients had an increased incidence of activating KIR and KIR2DS4 (P = 0.465 × 10-4, Pc = 0.837 × 10-3, OR = 20.81, 95% CI = 2.786-155.5) compared to controls. KIR/HLA class I ligand profile KIR2DS4/C1 (P = 0.350 × 10-4, Pc = 0.630 × 10-3, OR = 8.944, 95% CI = 2.667-29.993) was significantly elevated in AA patients compared to healthy controls. Genotype AA1 (P = 0.003, OR = 2.351, 95% CI = 1.325-4.172) were increased, and AA195 (P = 0.006, OR = 0.060, 95% CI = 0.004-1.023) was decreased among AA cases compared to controls. Our findings indicated that KIR2DS4 may play a role in the pathogenesis of AA. This study revealed the contribution of KIR genes in the etiology of AA cases.
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Affiliation(s)
- Tianju Wang
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China
| | - Jun Qi
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China.
| | - Manni Wang
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China
| | - Hua Xu
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China
| | - Junhua Wu
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China
| | - Lixia Shang
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China
| | - Le Chen
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China
| | - Yuhui Li
- HLA Typing Laboratory, Blood Center of the Shaanxi Province, Institute of Xi'an Blood Bank, Xi'an, Shaanxi, 710061, China
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Kevin-Tey WF, Wen WX, Bee PC, Eng HS, Ho KW, Tan SM, Anuar NA, Pung YF, Zain SM. KIR genotype and haplotype frequencies in the multi-ethnic population of Malaysia. Hum Immunol 2023; 84:172-185. [PMID: 36517321 DOI: 10.1016/j.humimm.2022.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 11/10/2022] [Accepted: 11/24/2022] [Indexed: 12/14/2022]
Abstract
Killer cell immunoglobulin-like receptors (KIR) genotype and haplotype frequencies have been reported to vary distinctly between populations, which in turn contributes to variation in the alloreactivity of natural killer (NK) cells. Utilizing the diverse KIR genes to identify suitable transplant donors would prove challenging in multi-ethnic countries, even more in resource-limited countries where KIR genotyping has not been established. In this study, we determined the KIR genotypes from 124 unrelated Malaysians consisting of the Malays, Chinese, Indians, and aboriginal people through polymerase chain reaction sequence-specific primer (PCR-SSP) genotyping and employing an expectation-maximization (EM) algorithm to assign haplotypes based on pre-established reference haplotypes. A total of 27 distinct KIR haplotypes were discerned with higher frequencies of haplotype A (55.2%) than haplotype B (44.8%). The most frequent haplotypes were cA01:tA01 (55.2%), cB01:tB01 (18.1%), and cB02:tA01 (13.3%), while the least frequent haplotypes were cB03:tB01 (1.2%), cB04:tB03 (0.4%), and cB03:tA01 (0.4%). Several haplotypes were identified to be unique to a specific ethnic group. The genotype with the highest frequency was genotype AB (71.8%), followed by AA (19.4%), and BB (8.9%). The Indians exhibited the lowest genotype AA but the highest genotype BB, whereas genotype BB was absent in the aboriginal people. Despite the limitations, the genotype and haplotypes in the Malaysian population were successfully highlighted. The identification of ethnic-specific KIR genotypes and haplotypes provides the first step to utilizing KIR in identifying suitable transplant donors to further improve the transplant outcome in the Malaysian population.
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Affiliation(s)
- Wen Fei Kevin-Tey
- Department of Pharmacology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Wei Xiong Wen
- Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Ping Chong Bee
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Hooi Sian Eng
- Division of Nephrology, University Malaya Medical Centre, Kuala Lumpur, Malaysia
| | - Kim Wah Ho
- Department of Haematology, Hospital Ampang, Kuala Lumpur, Malaysia
| | - Sen Mui Tan
- Department of Haematology, Hospital Ampang, Kuala Lumpur, Malaysia
| | - Nur Adila Anuar
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Yuh Fen Pung
- Division of Biomedical Science, University of Nottingham Malaysia, Semenyih, Malaysia
| | - Shamsul Mohd Zain
- Department of Pharmacology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia.
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Killer-Cell Immunoglobulin-like Receptor Diversity in an Admixed South American Population. Cells 2022; 11:cells11182776. [PMID: 36139351 PMCID: PMC9496851 DOI: 10.3390/cells11182776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
Natural Killer (NK) cells are innate immune cells that mediate antiviral and antitumor responses. NK cell activation and induction of effector functions are tightly regulated by the integration of activating and inhibitory receptors such as killer immunoglobulin-like receptors (KIR). KIR genes are characterized by a high degree of diversity due to presence or absence, gene copy number and allelic polymorphism. The aim of this study was to establish the distribution of KIR genes and genotypes, to infer the most common haplotypes in an admixed Colombian population and to compare these KIR gene frequencies with some Central and South American populations and worldwide. A total of 161 individuals from Medellin, Colombia were included in the study. Genomic DNA was used for KIR and HLA genotyping. We analyzed only KIR gene-content (presence or absence) based on PCR-SSO. The KIR genotype, most common haplotypes and combinations of KIR and HLA ligands frequencies were estimated according to the presence or absence of KIR and HLA genes. Dendrograms, principal component (PC) analysis and Heatmap analysis based on genetic distance were constructed to compare KIR gene frequencies among Central and South American, worldwide and Amerindian populations. The 16 KIR genes analyzed were distributed in 37 different genotypes and the 7 most frequent KIR inferred haplotypes. Importantly, we found three new genotypes not previously reported in any other ethnic group. Our genetic distance, PC and Heatmap analysis revealed marked differences in the distribution of KIR gene frequencies in the Medellin population compared to worldwide populations. These differences occurred mainly in the activating KIR isoforms, which are more frequent in our population, particularly KIR3DS1. Finally, we observed unique structural patterns of genotypes, which evidences the potential diversity and variability of this gene family in our population, and the need for exhaustive genetic studies to expand our understanding of the KIR gene complex in Colombian populations.
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He M, Zheng ZZ, He QQ, Li DY, Liao KZ, An L, Weng Q, Wang NJ, Wang LP, Sun Q, Wang J, Xiao PL, Du KM, Jiang M. Distribution of killer cell immunoglobulin-like receptor (KIR) genes in a large, multi-centre cohort of Chinese donors. Ann Hum Biol 2021; 48:133-141. [PMID: 34097546 DOI: 10.1080/03014460.2021.1913223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND The killer cell immunoglobulin-like receptor (KIR), which mediates the killing function of NK cells, is an attractive candidate for adoptive cellular therapy. The ethnic distribution for China provides a unique opportunity to investigate KIR gene distribution. AIM The aim of this study was to explore the relationship between population history and the rapidly evolving KIR genetic diversity. SUBJECTS AND METHODS 8050 Chinese donors from 184 hospitals were included to analyse frequency, haplotype, and B-content data of 16 KIR genes, by PCR-SSP for KIR genotyping. RESULTS KIR gene carrier frequencies were found similar to those observed in other studies on Han, but different from Thais, Japanese, Africans, and populations of West Eurasian ancestry. High-frequency KIR genotype profiles found in the present population were consistent with other studies on Han populations but different from those conducted on other cohorts. The majority of our cohort carried group A KIR gene motifs. Additionally, populations with similar geographic locations in China were shown clustered together, while Hainan and Xinjiang provinces were slightly separated from these. CONCLUSION The distribution of KIR genes varies by geographic region, and different ethnic groups may be a confounding factor of KIR diversity.
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Affiliation(s)
- Min He
- Hematologic Disease Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,Xinjiang Uygur Autonomous Region Research Institute of Hematology, Urumqi, China
| | | | - Qing-Qing He
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Dai-Yang Li
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Kuan-Zhen Liao
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Lin An
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Qi Weng
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Ning-Juan Wang
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Li-Ping Wang
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Qin Sun
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Jian Wang
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Pei-Li Xiao
- Shanghai Tissuebank Biotechnology Co., Ltd., Shanghai, China
| | - Ke-Ming Du
- Xinjiang Uygur Autonomous Region Research Institute of Hematology, Urumqi, China
| | - Ming Jiang
- Hematologic Disease Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,Xinjiang Uygur Autonomous Region Research Institute of Hematology, Urumqi, China
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Hanis Zainal Abidin NW, Mohd Nor N, Sundararajulu P, Zafarina Z. Understanding the genetic history of Malay populations in Peninsular Malaysia via KIR genes diversity. Am J Hum Biol 2020; 33:e23545. [PMID: 33289243 DOI: 10.1002/ajhb.23545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 11/06/2020] [Accepted: 11/18/2020] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES Killer cell immunoglobulin-like receptor (KIR) genes with high polymorphism at genotypic levels are important in providing immune defense and have been expanded towards human population genetics. The aim of this study is to provide supporting information from this new biomarker to strengthen the comprehension of genetic history of the complex Malay population. METHODS KIR genotyping for 213 unadmixed Malay individuals from six subethnic groups (Acheh, Bugis, Champa, Mandailing, Minang and Kedah) was carried out using PCR-SSP (sequence specific primers) method in 16 independent reactions. RESULTS The most frequent KIR genotype observed is AA1, followed by AB4 and AB5. Five genotypes; AA1, AB4, AB5, AB7 and AB8 were shared among all Malay subethnic groups. The highest frequency of KIR haplotype A was observed in Minang Malays, whereas Acheh and Kedah Malays carry a balanced distribution of A and B KIR haplotypes. PCA for the KIR genes clearly illustrated six ethnogeographical population clusters; Africans, Amerindian, Northeast Asian, South Asian, Oceania and Southeast Asian populations. All six Malay subethnic groups fell within the Southeast Asian cluster. CONCLUSIONS The complex array of KIR genotypes observed in the Malays indicates their historical interactions with various populations, especially with the Chinese, Indians and Orang Asli. This study has demonstrated the potential of KIR genes as a genetic marker for deducing population structure and genetic relationship between populations.
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Affiliation(s)
| | - Norazmi Mohd Nor
- Human Identification/DNA Unit, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Panneerchelvam Sundararajulu
- Human Identification/DNA Unit, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Zainuddin Zafarina
- Analytical Biochemistry Research Centre, Universiti Sains Malaysia, 11800, USM, Penang, Malaysia
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Distribution of HLA-A, -B, and -C alleles and HLA/KIR combinations in Han population in China. J Immunol Res 2014; 2014:565296. [PMID: 24995346 PMCID: PMC4068047 DOI: 10.1155/2014/565296] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 05/09/2014] [Accepted: 05/23/2014] [Indexed: 11/17/2022] Open
Abstract
We investigated polymorphisms of the human leukocyte antigen (HLA) class I (A, B, and C) loci of a Han population (n, 239) from the Yunnan province, Southwest China, using high-resolution polymerase chain reaction-Luminex (PCR-Luminex) typing. We combined the HLA data from this study with the KIR genotypes from a previous study of this Han population to analyze the combination of KIR/HLA ligands. A total of 27 HLA-A, 54 HLA-B, and 31 HLA-C alleles were found in this population. The frequencies of A*11:01, A*24:02, B*40:01, B*46:01, C*01:02, C*03:04, and C*07:02 were all > 10%. The following haplotypes were common, with frequencies > 5%: 1 A-B (A*02:07-B*46:01), 2 A-C (A*02:07-C*01:02, and A*11:01-C*07:02), 4 C-B (B*13:01-C*03:04, B*40:01-C*07:02, B*46:01-C*01:02 and B*58:01-C*03:02), and 1 A-C-B (A*02:07-C*01:02-B*46:01). Analysis of KIR3D and their ligands HLA-A3/A11 and HLA-Bw4 showed that the frequencies of 3DL2+-A3/A11+ and 3DL2+-A3/A11− were 0.527 and 0.473, and the frequencies of 3DL1+-Bw4+, 3DL1+-Bw4−, 3DL1−-Bw4+, and 3DL1−-Bw4− were 0.552, 0.397, 0.038, and 0.013, respectively. The results of KIR/HLA-C combination analysis showed that all individuals had at least one inhibitory or activating KIR/HLA-C pair, and one KIR/HLA-C pair was the most frequent (157/239), followed by two pairs (46/239), three pairs (33/239), and no pairs (3/239). Comparison of KIR gene and HLA gene and their pair frequency between Yunnan Han and the isolated Han (FYDH) who also lived in Yunnan province showed no significant difference (P > 0.05) in KIR frequencies, but significant differences (P < 0.05) for some HLA allele frequencies. In addition, there was no significant difference (P > 0.05) between the two populations for KIR/HLA pairs.
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