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Gambino CM, Agnello L, Vidali M, Lo Sasso B, Mansueto P, Seidita A, Giuliano A, Scazzone C, Massa D, Masucci A, Tamburello M, Vassallo R, Ciaccio AM, Candore G, Carroccio A, Ciaccio M. The role of Killer immunoglobulin-like receptors (KIRs) in the genetic susceptibility to non-celiac wheat sensitivity (NCWS). Clin Chem Lab Med 2024; 62:1814-1823. [PMID: 38639193 DOI: 10.1515/cclm-2024-0034] [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: 01/10/2024] [Accepted: 04/07/2024] [Indexed: 04/20/2024]
Abstract
OBJECTIVES Non-celiac wheat sensitivity (NCWS) is an emerging clinical condition characterized by gastrointestinal and extraintestinal symptoms following the ingestion of gluten-containing foods in patients without celiac disease (CD) or wheat allergy. Despite the great interest for NCWS, the genetic risk factors still need to be fully clarified. In this study, we first assessed the possible contribution of KIR genes and KIR haplotypes on the genetic predisposition to NCWS. METHODS Fifty patients with NCWS, 50 patients with CD, and 50 healthy controls (HC) were included in this study. KIR genes and KIR genotyping were investigated in all subjects by polymerase chain reaction with the sequence oligonucleotide probe (PCR-SSOP) method using Luminex technology. RESULTS We found a statistically different distribution of some KIR genes among NCWS, CD, and HC. Specifically, NCWS showed a decreased frequency of KIR2DL1, -2DL3, -2DL5, -2DS2, -2DS3, -2DS4, -2DS5, and -3DS1 genes, and an increased frequency of -3DL1 gene respect to both CD and HC. No difference was detected in the KIR haplotype expression. At the multivariate analysis, KIR2DL5, -2DS4, and -2DS5 were independent predictors of NCWS. CONCLUSIONS Our findings suggest a role of KIR genes in NCWS susceptibility, with KIR2DL5, -2DS4, and -2DS5 having a protective effect. Further large-scale multicentric studies are required to validate these preliminary findings.
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Affiliation(s)
- Caterina Maria Gambino
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
- Department of Laboratory Medicine, University Hospital "P. Giaccone", Palermo, Italy
| | - Luisa Agnello
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
| | - Matteo Vidali
- Clinical Pathology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Bruna Lo Sasso
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
- Department of Laboratory Medicine, University Hospital "P. Giaccone", Palermo, Italy
| | - Pasquale Mansueto
- Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine, and Medical Specialties (PROMISE), Unit of Internal Medicine, 18998 University of Palermo , Palermo, Italy
| | - Aurelio Seidita
- Unit of Internal Medicine, "V. Cervello" Hospital, Ospedali Riuniti "Villa Sofia-Cervello", Palermo, Italy
| | - Alessandra Giuliano
- Unit of Internal Medicine, "V. Cervello" Hospital, Ospedali Riuniti "Villa Sofia-Cervello", Palermo, Italy
| | - Concetta Scazzone
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
| | - Davide Massa
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
| | - Anna Masucci
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
| | - Martina Tamburello
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
| | - Roberta Vassallo
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
| | - Anna Maria Ciaccio
- Department of Health Promotion, Maternal and Child Health, Internal Medicine, and Specialty Excellence "G. D'Alessandro" (PROMISE), Internal Medicine and Stroke Care Ward, University of Palermo, Palermo, Italy
| | - Giuseppina Candore
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Laboratory of Immunopathology and Immunosenescence, University of Palermo , Palermo, Italy
| | - Antonio Carroccio
- Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine, and Medical Specialties (PROMISE), Unit of Internal Medicine, 18998 University of Palermo , Palermo, Italy
- Unit of Internal Medicine, "V. Cervello" Hospital, Ospedali Riuniti "Villa Sofia-Cervello", Palermo, Italy
| | - Marcello Ciaccio
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, 18998 Institute of Clinical Biochemistry, Clinical Molecular Medicine, and Clinical Laboratory Medicine, University of Palermo , Palermo, Italy
- Department of Laboratory Medicine, University Hospital "P. Giaccone", Palermo, Italy
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Jalalvand M, Beigmohammadi F, Soltani S, Ehsan S, Rajabkhah S, Madreseh E, Akhtari M, Jamshidi A, Farhadi E, Mahmoudi M, Nafissi S. The investigation of killer-cell immunoglobulin-like receptors (KIRs) and their HLA ligands in Iranian patients with myasthenia gravis. Clin Neurol Neurosurg 2024; 238:108171. [PMID: 38422742 DOI: 10.1016/j.clineuro.2024.108171] [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: 10/01/2023] [Revised: 01/31/2024] [Accepted: 02/08/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Myasthenia gravis (MG) is a disabling disease with the underlying pathophysiology of auto-antibodies attacking the postsynaptic acetylcholine receptors of neuromuscular junctions causing muscle weakness. Natural killer (NK) cells are innate immune cells that play an important regulative role in immune responses. The human killer-cell immunoglobulin-like receptors (KIRs) family is one of the receptors on NK cells that can either activate or inhibit NK cells. This study aimed to assess the possible role of KIR and their human leukocyte antigen (HLA) ligand genes susceptibility to MG in Iranian patients. METHOD One hundred and sixty-three patients with MG diagnosis based on the presence of clinical symptoms and laboratory tests and 400 healthy volunteers were studied. We used the polymerase chain reaction (PCR) technique for genotyping 15 KIRs and 5 HLA genes. RESULTS The results demonstrated that there was no significant difference in the frequency of KIR genes and inhibitory KIR genotypes between controls and patients. In MG patients, HLA-C1Asn80 was significantly less frequent than in matched controls. The frequency of HLA genotype number 7 was significantly lower in MG cases, compared to the controls. Analysis of activating KIR genotypes showed that genotype number 10 was significantly less frequent in MG cases than in matched controls. CONCLUSION Our results suggest that the presence HLA-C1Asn80 might play a protective role against the pathogenesis of MG. The significantly decreased prevalence of one activating KIR genotype and one of the HLA genotypes in MG cases suggest that these genotypes can reduce the risk of MG development. To specifically reveal the impact of KIR and HLA in MG, more studies are required.
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Affiliation(s)
- Mobina Jalalvand
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Samaneh Soltani
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Soroush Ehsan
- Department of Neurology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Sahebeh Rajabkhah
- Department of Neurology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Madreseh
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Akhtari
- Tobacco Prevention and Control Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ahmadreza Jamshidi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Farhadi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Chronic Inflammatory Diseases, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Mahmoudi
- Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Chronic Inflammatory Diseases, Tehran University of Medical Sciences, Tehran, Iran.
| | - Shahriar Nafissi
- Department of Neurology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran; Neuromuscular Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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3
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Choi EJ, Baek IC, Park S, Kim HJ, Kim TG. Development of cost-effective and fast KIR genotyping by multiplex PCR-SSP. HLA 2024; 103:e15191. [PMID: 37688498 DOI: 10.1111/tan.15191] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 07/24/2023] [Accepted: 08/01/2023] [Indexed: 09/11/2023]
Abstract
Killer-cell immunoglobulin-like receptors (KIR) control natural killer (NK) cell functions by recognizing HLA molecules and modulating the activity of NK cells. The KIR gene cluster contains polymorphic and highly homologous genes. Diversity of the KIR region is achieved through differences in gene content, allelic polymorphism, and gene copy number, which result in unrelated individuals having different KIR genotypes and individualized immune responses that are relevant to multiple aspects of human health and disease. Therefore, KIR genotyping is increasingly used in epidemiological studies. Here, we developed multiplex polymerase chain reaction with sequence-specific primers (PCR-SSP) to compensate for the shortcomings of the conventional PCR-SSP method, which is most commonly used for KIR analysis. Multiplex PCR-SSP method involves six multiplex reactions that detect 16 KIR genes and distinguish variant types of some KIR genes by adding two reactions. The assay was evaluated in a blind survey using a panel of 40 reference DNA standards from the UCLA KIR Exchange Program. The results are 100% concordant with the genotype determined using Luminex-based reverse sequence-specific oligonucleotide typing systems. Additionally, we investigated the currently known 16 KIR genes and their common variants in 120 unrelated Korean individuals. The results were consistent with the KIR genotype previously reported by Hwang et al. This multiplex PCR-SSP is an efficient method for analyzing KIR genotypes in both small- and large-scale studies with minimal labor, reagents, and DNA. Furthermore, by providing a better definition of KIR polymorphisms it can contribute to developments in immunogenetics.
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Affiliation(s)
- Eun-Jeong Choi
- Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In-Cheol Baek
- Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Silvia Park
- Department of Internal Medicine, Catholic Blood and Marrow Transplantation Center, Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hee-Je Kim
- Department of Internal Medicine, Catholic Blood and Marrow Transplantation Center, Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Tai-Gyu Kim
- Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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4
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CD8+ Tregs kill pathogenic cells to avert autoimmunity. Trends Immunol 2022; 43:415-416. [DOI: 10.1016/j.it.2022.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 04/24/2022] [Indexed: 11/20/2022]
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5
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Bruijnesteijn J, de Groot N, de Vos-Rouweler AJM, de Groot NG, Bontrop RE. Comparative genetics of KIR haplotype diversity in humans and rhesus macaques: the balancing act. Immunogenetics 2022; 74:313-326. [PMID: 35291021 DOI: 10.1007/s00251-022-01259-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/01/2022] [Indexed: 12/25/2022]
Abstract
The role of natural killer (NK) cells is tightly modulated by interactions of killer cell immunoglobulin-like receptors (KIR) with their ligands of the MHC class I family. Several characteristics of the KIR gene products are conserved in primate evolution, like the receptor structures and the variegated expression pattern. At the genomic level, however, the clusters encoding the KIR family display species-specific diversity, reflected by differential gene expansions and haplotype architecture. The human KIR cluster is extensively studied in large cohorts from various populations, which revealed two KIR haplotype groups, A and B, that represent more inhibitory and more activating functional profiles, respectively. So far, genomic KIR analyses in large outbred populations of non-human primate species are lacking. In this study, we roughly quadrupled the number of rhesus macaques studied for their KIR transcriptome (n = 298). Using segregation analysis, we defined 112 unique KIR region configurations, half of which display a more inhibitory profile, whereas the other half has a more activating potential. The frequencies and functional potential of these profiles might mirror the human KIR haplotype groups. However, whereas the human group A and B KIR haplotypes are confined to largely fixed organizations, the haplotypes in macaques feature highly variable gene content. Moreover, KIR homozygosity was hardly encountered in this panel of macaques. This study exhibits highly diverse haplotype architectures in humans and macaques, which nevertheless might have an equivalent effect on the modulation of NK cell activity.
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Affiliation(s)
- Jesse Bruijnesteijn
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, 2288 GJ, Rijswijk, the Netherlands.
| | - Nanine de Groot
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, 2288 GJ, Rijswijk, the Netherlands
| | - Annemiek J M de Vos-Rouweler
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, 2288 GJ, Rijswijk, the Netherlands
| | - Natasja G de Groot
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, 2288 GJ, Rijswijk, the Netherlands
| | - Ronald E Bontrop
- Department of Comparative Genetics and Refinement, Biomedical Primate Research Centre, 2288 GJ, Rijswijk, the Netherlands
- Theoretical Biology and Bioinformatics Group, Utrecht University, 3527, Utrecht, the Netherlands
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6
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Sakaue S, Hosomichi K, Hirata J, Nakaoka H, Yamazaki K, Yawata M, Yawata N, Naito T, Umeno J, Kawaguchi T, Matsui T, Motoya S, Suzuki Y, Inoko H, Tajima A, Morisaki T, Matsuda K, Kamatani Y, Yamamoto K, Inoue I, Okada Y. Decoding the diversity of killer immunoglobulin-like receptors by deep sequencing and a high-resolution imputation method. CELL GENOMICS 2022; 2:100101. [PMID: 36777335 PMCID: PMC9903714 DOI: 10.1016/j.xgen.2022.100101] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 08/07/2021] [Accepted: 02/02/2022] [Indexed: 12/12/2022]
Abstract
The killer cell immunoglobulin-like receptor (KIR) recognizes human leukocyte antigen (HLA) class I molecules and modulates the function of natural killer cells. Despite its role in immunity, the complex genomic structure has limited a deep understanding of the KIR genomic landscape. Here we conduct deep sequencing of 16 KIR genes in 1,173 individuals. We devise a bioinformatics pipeline incorporating copy number estimation and insertion or deletion (indel) calling for high-resolution KIR genotyping. We define 118 alleles in 13 genes and demonstrate a linkage disequilibrium structure within and across KIR centromeric and telomeric regions. We construct a KIR imputation reference panel (nreference = 689, imputation accuracy = 99.7%), apply it to biobank genotype (ntotal = 169,907), and perform phenome-wide association studies of 85 traits. We observe a dearth of genome-wide significant associations, even in immune traits implicated previously to be associated with KIR (the smallest p = 1.5 × 10-4). Our pipeline presents a broadly applicable framework to evaluate innate immunity in large-scale datasets.
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Affiliation(s)
- Saori Sakaue
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
- Center for Data Sciences, Harvard Medical School, Boston, MA 02115, USA
- Divisions of Genetics and Rheumatology, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
- Corresponding author
| | - Kazuyoshi Hosomichi
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
| | - Jun Hirata
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hirofumi Nakaoka
- Human Genetics Laboratory, National Institute of Genetics, Shizuoka 411-8540, Japan
| | - Keiko Yamazaki
- Laboratory for Genotyping Development, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
- Department of Public Health, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan
- Laboratory for Autoimmune Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
| | - Makoto Yawata
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, and National University Health System, Singapore 119228, Singapore
- NUSMed Immunology Translational Research Programme, and Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore 117456, Singapore
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research, Singapore 117609, Singapore
- International Research Center for Medical Sciences, Kumamoto University, Kumamoto 860-0811, Japan
| | - Nobuyo Yawata
- Department of Ocular Pathology and Imaging Science, Kyushu University, 812-8582, Japan
- Singapore Eye Research Institute, Singapore 169856, Singapore
- Duke-NUS Medical School, Singapore 169857, Singapore
| | - Tatsuhiko Naito
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Junji Umeno
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Takaaki Kawaguchi
- Division of Gastroenterology, Department of Medicine, Tokyo Yamate Medical Center, Tokyo 169-0073, Japan
| | - Toshiyuki Matsui
- Department of Gastroenterology, Fukuoka University Chikushi Hospital, Fukuoka 818-0067, Japan
| | - Satoshi Motoya
- Department of Gastroenterology, Sapporo-Kosei General Hospital, Sapporo 060-0033, Japan
| | - Yasuo Suzuki
- Department of Internal Medicine, Faculty of Medicine, Toho University, Chiba 274-8510, Japan
| | | | - Atsushi Tajima
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Ishikawa 920-8640, Japan
| | - Takayuki Morisaki
- Division of Molecular Pathology, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Koichi Matsuda
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo 108-8639, Japan
| | - Yoichiro Kamatani
- Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
- Laboratory of Complex Trait Genomics, Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo 108-8639, Japan
| | - Kazuhiko Yamamoto
- Laboratory for Autoimmune Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
| | - Ituro Inoue
- Human Genetics Laboratory, National Institute of Genetics, Shizuoka 411-8540, Japan
| | - Yukinori Okada
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
- Laboratory of Statistical Immunology, Immunology Frontier Research Center (WPI-IFReC), Osaka University, Suita 565-0871, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita 565-0871, Japan
- Laboratory for Systems Genetics, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan
- Center for Infectious Disease Education and Research (CiDER), Osaka University, Suita 565-0871, Japan
- Corresponding author
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Herpesvirus Infections in KIR2DL2-Positive Multiple Sclerosis Patients: Mechanisms Triggering Autoimmunity. Microorganisms 2022; 10:microorganisms10030494. [PMID: 35336070 PMCID: PMC8954585 DOI: 10.3390/microorganisms10030494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/11/2022] [Accepted: 02/21/2022] [Indexed: 02/06/2023] Open
Abstract
In multiple sclerosis (MS), there is a possible relationship with viral infection, evidenced by clinical evidence of an implication of infectious events with disease onset and/or relapse. The aim of this research is to study how human herpesvirus (HHVs) infections might dysregulate the innate immune system and impact autoimmune responses in MS. We analyzed 100 MS relapsing remitting patients, in the remission phase, 100 healthy controls and 100 subjects with other inflammatory neurological diseases (OIND) (neuro-lupus) for their immune response to HHV infection. We evaluated NK cell response, levels of HHVs DNA, IgG and pro- and anti-inflammatory cytokines. The results demonstrated that the presence of KIR2DL2 expression on NK cells increased the susceptibility of MS patients to HHV infections. We showed an increased susceptibility mainly to EBV and HHV-6 infections in MS patients carrying the KIR2DL2 receptor and HLA-C1 ligand. The highest HHV-6 viral load was observed in MS patients, with an increased percentage of subjects positive for IgG against HHV-6 in KIR2DL2-positive MS and OIND subjects compared to controls. MS and OIND patients showed the highest levels of IL-8, IL-12p70, IL-10 and TNF-alpha in comparison with control subjects. Interestingly, MS and OIND patients showed similar levels of IL-8, while MS patients presented higher IL-12p70, TNF-alpha and IL-10 levels in comparison with OIND patients. We can hypothesize that HHVs’ reactivation, by inducing immune activation via also molecular mimicry, may have the ability to induce autoimmunity and cause tissue damage and consequent MS lesion development.
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Rheumatoid Arthritis Susceptibility Is Associated with the KIR2DS4-Full of Killer-Cell Immunoglobulin-Like Receptor Genes in the Lur Population of Iran. Rep Biochem Mol Biol 2021; 10:84-94. [PMID: 34277872 DOI: 10.52547/rbmb.10.1.84] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 12/13/2020] [Indexed: 12/22/2022]
Abstract
Background The pathophysiology underlying the progression and development of autoimmune conditions, such as Rheumatoid Arthritis (RA), is a result of dysregulations of the immune system. Research has explored the genetic alterations present in RA; however, limited studies have examined the role of Killer cell Immunoglobulin-like Receptors (KIR) and Human Leukocyte Antigen (HLA) molecules in RA. Therefore, the aim of this study was to examine KIR genes, their HLA ligands, and KIR-HLA compounds in patients with RA. Methods In this case-control study, a total of 50 patients with RA and 100 healthy individuals were enrolled. DNA samples were evaluated using PCR with sequence specific Primers (PCR-SSP). Odds ratio (OR) with a 95% confidence interval (CI) were reported. Results Among the KIR genes examined, KIR2DLA (p= 0.0255, OR= 0.389, 95% CI= 0.210-0.722) and KIR2DS4-full (p< 0.0001, OR= 6.163, 95% CI= 3.174-11.968) were observed to have a statistically significant correlation with disease susceptibility to RA. As an inhibitory gene, KIR2DLA was observed to have a protective effect against RA while KIR2DS4-full as an activating gene, was found to increase risk for RA. No significant associations were found between any of the other KIR genotypes, HLA ligands, or KIR-HLA compounds examined in this study to RA susceptibility. Conclusion In this study of RA in the Lur population of Iran, KIR2DS4-full was observed to increase susceptibility to RA, while KIR2DL5A was found to act as a protecting factor based on both the cross Table and regression analyses. Further research should focus on repeating this study in additional populations.
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Gianchecchi E, Delfino DV, Fierabracci A. Natural Killer Cells: Potential Biomarkers and Therapeutic Target in Autoimmune Diseases? Front Immunol 2021; 12:616853. [PMID: 33679757 PMCID: PMC7933577 DOI: 10.3389/fimmu.2021.616853] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/21/2021] [Indexed: 12/20/2022] Open
Abstract
Autoimmune diseases recognize a multifactorial pathogenesis, although the exact mechanism responsible for their onset remains to be fully elucidated. Over the past few years, the role of natural killer (NK) cells in shaping immune responses has been highlighted even though their involvement is profoundly linked to the subpopulation involved and to the site where such interaction takes place. The aberrant number and functionality of NK cells have been reported in several different autoimmune disorders. In the present review, we report the most recent findings regarding the involvement of NK cells in both systemic and organ-specific autoimmune diseases, including type 1 diabetes (T1D), primary biliary cholangitis (PBC), systemic sclerosis, systemic lupus erythematosus (SLE), primary Sjögren syndrome, rheumatoid arthritis, and multiple sclerosis. In T1D, innate inflammation induces NK cell activation, disrupting the Treg function. In addition, certain genetic variants identified as risk factors for T1D influenced the activation of NK cells promoting their cytotoxic activity. The role of NK cells has also been demonstrated in the pathogenesis of PBC mediating direct or indirect biliary epithelial cell destruction. NK cell frequency and number were enhanced in both the peripheral blood and the liver of patients and associated with increased NK cell cytotoxic activity and perforin expression levels. NK cells were also involved in the perpetuation of disease through autoreactive CD4 T cell activation in the presence of antigen-presenting cells. In systemic sclerosis (SSc), in addition to phenotypic abnormalities, patients presented a reduction in CD56hi NK-cells. Moreover, NK cells presented a deficient killing activity. The influence of the activating and inhibitory killer cell immunoglobulin-like receptors (KIRs) has been investigated in SSc and SLE susceptibility. Furthermore, autoantibodies to KIRs have been identified in different systemic autoimmune conditions. Because of its role in modulating the immune-mediated pathology, NK subpopulation could represent a potential marker for disease activity and target for therapeutic intervention.
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Affiliation(s)
- Elena Gianchecchi
- VisMederi srl, Siena, Italy.,Infectivology and Clinical Trials Research Area, Primary Immunodeficiencies Research Unit, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Domenico V Delfino
- Section of Pharmacology, Department of Medicine, University of Perugia, Perugia, Italy
| | - Alessandra Fierabracci
- Infectivology and Clinical Trials Research Area, Primary Immunodeficiencies Research Unit, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
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10
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Omraninava M, Mehranfar S, Khosrojerdi A, Jamalzehi S, Karami J, Motallebnezhad M, Javan MR, Aslani S, Mohammadi H, Kousha A. Systematic review and meta-analytic findings on the association between killer-cell immunoglobulin-like receptor genes and susceptibility to pulmonary tuberculosis. Pathog Glob Health 2020; 115:61-69. [PMID: 33258733 DOI: 10.1080/20477724.2020.1848271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Several studies have evaluated the association between killer-cell immunoglobulin-like receptors (KIR) genes and susceptibility risk to tuberculosis (TB) infection. Nonetheless, their outcomes have not been conclusive and consistent. Here we implemented a systematic review and meta-analysis of KIR genes association to susceptibility risk of pulmonary TB (PTB) infection to attain a clear understanding of the involvement of these genes in susceptibility to PTB infection. A systematic search was conducted in the MEDLINE/PubMed and Scopus databases to find case-control studies published before November 2020. Pooled odds ratio (OR) and 95% confidence interval (95% CI) were calculated to determine the association between KIR genes and risk of PTB infection. After comprehensive searching and implementing the inclusion and exclusion criteria, 10 case-control studies were included in the meta-analysis. Four KIR genes were found to have significant positive association with PTB susceptibility risk of infection, including 2DL3 (OR = 1.454, 95% CI = 1.157-1.827; P = 0.001), 2DS1 (OR = 1.481, 95% CI = 1.334-1.837; P < 0.001), 2DS4 (OR = 1.782, 95% CI = 1.273-2.495; P = 0.001) and 3DL1 (OR = 1.726, 95% CI = 1.277-2.333; P < 0.001). However, the results showed that the remaining KIR genes (2DS2-4, 2DL1, 2, 4, 3DL1-2) and two pseudogenes (2DP1 and 3DP1) did not have significant associations with risk of PTB infection. This meta-analysis provides reliable evidence that the KIR genes 2DL3, 2DS1, 2DS4, and 3DL1 may be associated with an increased risk of PTB infection.
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Affiliation(s)
- Melodi Omraninava
- Department of Infectious Disease, Faculty of Medical Sciences, Sari Branch, Islamic Azad University , Sari, Iran
| | - Sahar Mehranfar
- Department of Genetics and Immunology, Faculty of Medicine, Urmia University of Medical Sciences , Urmia, Iran.,Cellular and Molecular Research Center, Urmia University of Medical Sciences , Urmia, Iran
| | - Arezou Khosrojerdi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University , Tehran, Iran
| | - Sirous Jamalzehi
- Department of Medical Laboratory Sciences, Iranshahr University of Medical Sciences , Iranshahr, Iran
| | - Jafar Karami
- Department of Immunology, School of Medicine, Iran University of Medical Sciences , Tehran, Iran
| | - Morteza Motallebnezhad
- Department of Immunology, School of Medicine, Iran University of Medical Sciences , Tehran, Iran
| | - Mohammad Reza Javan
- Department of Immunology, Faculty of Medicine, Zabol University of Medical Sciences , Zabol, Iran
| | - Saeed Aslani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences , Tehran, Iran
| | - Hamed Mohammadi
- Department of Immunology, School of Medicine, Alborz University of Medical Sciences , Alborz, Iran
| | - Ahmad Kousha
- Department of Health Education and Health Promotion, Faculty of Health, Tabriz University of Medical Sciences , Tabriz, Iran
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