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Castelli EC, Paes GS, da Silva IM, Moreau P, Donadi EA. The + 3010/C single nucleotide polymorphism (rs1710) at the HLA-G 3' untranslated region is associated with a short transcript exhibiting a deletion of 92 nucleotides. Immunogenetics 2023; 75:155-160. [PMID: 36879172 DOI: 10.1007/s00251-023-01297-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 02/06/2023] [Indexed: 03/08/2023]
Abstract
The physiological expression of HLA-G is mainly observed in the placenta, playing an essential role in maternal-fetal tolerance. Among the HLA-G mRNA alternative transcripts, the one lacking 92 bases at the HLA-G 3' untranslated region (3'UTR), the 92bDel transcript, is more stable, is associated with increased HLA-G soluble levels, and was observed in individuals presenting a 14 bp insertion (14 bp+) at the 3'UTR. We investigated the presence of the 92bDel transcript in placenta samples, correlating its expression levels with the HLA-G polymorphisms at the 3'UTR. The 14 bp+ allele correlates with the presence of the 92bDel transcript. However, the polymorphism triggering this alternative splicing is the + 3010/C allele (rs1710, allele C). Most 14 bp+ haplotypes (UTR-2/-5/-7) present allele + 3010/C. However, 14 bp- haplotypes such as UTR-3 are also associated with + 3010/C, and the 92bDel transcript can be detected in homozygous samples for the 14 bp- allele carrying at least one copy of UTR-3. The UTR-3 haplotype is associated with alleles G*01:04 and the HLA-G lineage HG0104, which is a high-expressing lineage. The only HLA-G lineage that is not likely to produce this transcript is HG010101, associated with the + 3010/G allele. This functional difference may be advantageous, considering the high worldwide frequency of the HG010101 lineage. Therefore, HLA-G lineages are functionally distinct regarding the 92bDel transcript expression, and the 3010/C allele triggers the alternative splicing that produces this shorter and more stable transcript.
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Affiliation(s)
- Erick C Castelli
- Department of Pathology, School of Medicine, São Paulo State University (Unesp), Botucatu, Brazil.
- Molecular Genetics and Bioinformatics Laboratory (GeMBio) - Experimental Research Unit, School of Medicine, São Paulo State University (Unesp), Botucatu, Brazil.
| | - Gabriela Sato Paes
- Molecular Genetics and Bioinformatics Laboratory (GeMBio) - Experimental Research Unit, School of Medicine, São Paulo State University (Unesp), Botucatu, Brazil
| | - Isabelle Mira da Silva
- Molecular Genetics and Bioinformatics Laboratory (GeMBio) - Experimental Research Unit, School of Medicine, São Paulo State University (Unesp), Botucatu, Brazil
| | - Philippe Moreau
- Commissariat À L'Energie Atomique Et Aux Energies Alternatives, Direction de La Recherche Fondamentale, Institut de Biologie François Jacob, Service de Recherches en Hémato-ImmunologieHôpital Saint-Louis, Paris, France
- U976 HIPI Unit, ISRL, Université Paris Cité, Paris, France
| | - Eduardo A Donadi
- Division of Clinical Immunology, Department of Medicine, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, SP, CEP, 14049-900, Brazil
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Riaz B, Islam SMS, Ryu HM, Sohn S. CD83 Regulates the Immune Responses in Inflammatory Disorders. Int J Mol Sci 2023; 24:ijms24032831. [PMID: 36769151 PMCID: PMC9917562 DOI: 10.3390/ijms24032831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Activating the immune system plays an important role in maintaining physiological homeostasis and defending the body against harmful infections. However, abnormalities in the immune response can lead to various immunopathological responses and severe inflammation. The activation of dendritic cells (DCs) can influence immunological responses by promoting the differentiation of T cells into various functional subtypes crucial for the eradication of pathogens. CD83 is a molecule known to be expressed on mature DCs, activated B cells, and T cells. Two isotypes of CD83, a membrane-bound form and a soluble form, are subjects of extensive scientific research. It has been suggested that CD83 is not only a ubiquitous co-stimulatory molecule but also a crucial player in monitoring and resolving inflammatory reactions. Although CD83 has been involved in immunological responses, its functions in autoimmune diseases and effects on pathogen immune evasion remain unclear. Herein, we outline current immunological findings and the proposed function of CD83 in inflammatory disorders.
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Affiliation(s)
- Bushra Riaz
- Department of Biomedical Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - S. M. Shamsul Islam
- Department of Microbiology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Hye Myung Ryu
- Department of Biomedical Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Seonghyang Sohn
- Department of Biomedical Science, Ajou University School of Medicine, Suwon 16499, Republic of Korea
- Department of Microbiology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
- Correspondence:
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The HLA-G Immune Checkpoint Plays a Pivotal Role in the Regulation of Immune Response in Autoimmune Diseases. Int J Mol Sci 2021; 22:ijms222413348. [PMID: 34948145 PMCID: PMC8706866 DOI: 10.3390/ijms222413348] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/10/2021] [Accepted: 12/10/2021] [Indexed: 12/11/2022] Open
Abstract
The human G-leukocyte antigen (HLA-G) molecule is a non-classical major histocompatibility complex (MHC) class I molecule. The pertinence of HLA-G has been investigated in numerous studies which have sought to elucidate the relevance of HLA-G in pathologic conditions, such as autoimmune diseases, cancers, and hematologic malignancies. One of the main goals of the current research on HLA-G is to use this molecule in clinical practice, either in diagnostics or as a therapeutic target. Since HLA-G antigens are currently considered as immunomodulatory molecules that are involved in reducing inflammatory and immune responses, in this review, we decided to focus on this group of antigens as potential determinants of progression in autoimmune diseases. This article highlights what we consider as recent pivotal findings on the immunomodulatory function of HLA-G, not only to establish the role of HLA-G in the human body, but also to explain how these proteins mediate the immune response.
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Trogocytosis between Non-Immune Cells for Cell Clearance, and among Immune-Related Cells for Modulating Immune Responses and Autoimmunity. Int J Mol Sci 2021; 22:ijms22052236. [PMID: 33668117 PMCID: PMC7956485 DOI: 10.3390/ijms22052236] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/21/2021] [Accepted: 02/21/2021] [Indexed: 12/21/2022] Open
Abstract
The term trogocytosis refers to a rapid bidirectional and active transfer of surface membrane fragment and associated proteins between cells. The trogocytosis requires cell-cell contact, and exhibits fast kinetics and the limited lifetime of the transferred molecules on the surface of the acceptor cells. The biological actions of trogocytosis include information exchange, cell clearance of unwanted tissues in embryonic development, immunoregulation, cancer surveillance/evasion, allogeneic cell survival and infectious pathogen killing or intercellular transmission. In the present review, we will extensively review all these aspects. In addition to its biological significance, aberrant trogocytosis in the immune system leading to autoimmunity and immune-mediated inflammatory diseases will also be discussed. Finally, the prospective investigations for further understanding the molecular basis of trogocytosis and its clinical applications will also be proposed.
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Contini P, Murdaca G, Puppo F, Negrini S. HLA-G Expressing Immune Cells in Immune Mediated Diseases. Front Immunol 2020; 11:1613. [PMID: 32983083 PMCID: PMC7484697 DOI: 10.3389/fimmu.2020.01613] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 06/17/2020] [Indexed: 12/12/2022] Open
Abstract
HLA-G is a HLA class Ib antigen that possesses immunomodulatory properties. HLA-G-expressing CD4+ and CD8+ T lymphocytes, NK cells, monocytes, and dendritic cells with immunoregulatory functions are present in small percentages of patients with physiologic conditions. Quantitative and qualitative derangements of HLA-G+ immune cells have been detected in several conditions in which the immune system plays an important role, such as infectious, neoplastic, and autoimmune diseases as well as in complications from transplants and pregnancy. These observations strongly support the hypothesis that HLA-G+ immune cells may be implicated in the complex mechanisms underlying the pathogenesis of these disorders.
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Affiliation(s)
- P Contini
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Giuseppe Murdaca
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Francesco Puppo
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Simone Negrini
- Department of Internal Medicine, University of Genoa, Genoa, Italy
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Expression of membrane-bound human leucocyte antigen-G in systemic sclerosis and systemic lupus erythematosus. Hum Immunol 2019; 81:162-167. [PMID: 31848026 DOI: 10.1016/j.humimm.2019.12.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/06/2019] [Accepted: 12/09/2019] [Indexed: 12/20/2022]
Abstract
Human leucocyte antigen-G (HLA-G) is a nonclassical class I major histocompatibility complex (MHC) molecule characterized by complex immunoregulatory and tolerogenic functions. Membrane-bound HLA-G is expressed on the surface of different cell populations in both physiological and pathological conditions. Systemic sclerosis (SSc) is a multisystem autoimmune disease characterized by widespread tissue fibrosis, vascular lesions and immunological alterations. Systemic lupus erythematosus is the prototypic systemic autoimmune disease affecting virtually any organ system, such as skin, joints, central nervous system, or kidneys. In SSc and SLE patients, the membrane expression of HLA-G on monocytes (0.88 ± 1.54 and 0.43 ± 0.75, respectively), CD4+ (0.42 ± 0.78 and 0.63 ± 0.48, respectively), CD8+ (2.65 ± 3.47 and 1.29 ± 1.34, respectively) and CD4+ CD8+ double-positive cells (13.87 ± 15.97 and 3.79 ± 3.11, respectively) was significantly higher than in healthy controls (0.12 ± 0.07; 0.01 ± 0.01; 0.14 ± 0.20 and 0.32 ± 0.38, respectively) (p < 0.0001). Our results show that in SSc and SLE the membrane expression of HLA-G by different subpopulations of peripheral blood mononuclear cells (PBMC) is increased, suggesting a potential role of HLA-G molecules in the complex immunological pathogenesis of these two autoimmune disorders.
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Lu KL, Wu MY, Wang CH, Wang CW, Hung SI, Chung WH, Chen CB. The Role of Immune Checkpoint Receptors in Regulating Immune Reactivity in Lupus. Cells 2019; 8:E1213. [PMID: 31597242 PMCID: PMC6829486 DOI: 10.3390/cells8101213] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 09/29/2019] [Accepted: 10/03/2019] [Indexed: 12/26/2022] Open
Abstract
Immune checkpoint receptors with co-stimulatory and co-inhibitory signals are important modulators for the immune system. However, unrestricted co-stimulation and/or inadequate co-inhibition may cause breakdown of self-tolerance, leading to autoimmunity. Systemic lupus erythematosus (SLE) is a complex multi-organ disease with skewed and dysregulated immune responses interacting with genetics and the environment. The close connections between co-signaling pathways and SLE have gradually been established in past research. Also, the recent success of immune checkpoint blockade in cancer therapy illustrates the importance of the co-inhibitory receptors in cancer immunotherapy. Moreover, immune checkpoint blockade could result in substantial immune-related adverse events that mimic autoimmune diseases, including lupus. Together, immune checkpoint regulators represent viable immunotherapeutic targets for the treatment of both autoimmunity and cancer. Therefore, it appears reasonable to treat SLE by restoring the out-of-order co-signaling axis or by manipulating collateral pathways to control the pathogenic immune responses. Here, we review the current state of knowledge regarding the relationships between SLE and the co-signaling pathways of T cells, B cells, dendritic cells, and neutrophils, and highlight their potential clinical implications. Current clinical trials targeting the specific co-signaling axes involved in SLE help to advance such knowledge, but further in-depth exploration is still warranted.
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Affiliation(s)
- Kun-Lin Lu
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
| | - Ming-Ying Wu
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
| | - Chi-Hui Wang
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
| | - Chuang-Wei Wang
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
| | - Shuen-Iu Hung
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
| | - Wen-Hung Chung
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung 204, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361000, China
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
| | - Chun-Bing Chen
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung 204, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361000, China
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
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Foschi V, Bortolotti D, Doyle AF, Stratigou V, Stephens L, Trivedi P, Rinaldi R, Padovan M, Bortoluzzi A, Lightstone L, Cairns TD, Botto M, Cook TH, Rizzo R, Govoni M, Pickering MC. Analysis of HLA-G expression in renal tissue in lupus nephritis: a pilot study. Lupus 2019; 28:1091-1100. [PMID: 31291846 DOI: 10.1177/0961203319860582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND The study aimed to investigate whether HLA-G antigen is expressed in the kidneys of patients affected by lupus nephritis (LN) and whether its detection in renal biopsies could be adopted as a marker of treatment response and prognosis. METHODS Thirty renal biopsies from patients with LN were selected and analyzed through immunohistochemistry. Laboratory and clinical data were retrospectively collected at baseline, 6 and 12 months and at the latest clinical appointment. A number of patients (63.3%) were treated with rituximab (RTX) +/- methylprednisolone in the induction phase. The expression of HLA-G in glomeruli, tubules and infiltrating cells was examined and compared between lupus patients who achieved either complete or partial renal response and those who did not respond to treatment. RESULTS HLA-G staining was observed in the glomeruli of 20 of 30 samples from patients with LN. The expression of the antigen was detected in podocytes, along glomerular capillary walls, on parietal glomerular epithelial cells and within the juxtaglomerular apparatus. Seventy per cent of patients whose glomeruli expressed HLA-G achieved partial or complete response at 6 months and 75% at the latest available follow up compared with 30% and 40%, respectively, of those who did not show any expression. The pattern of staining in tubules and infiltrating cells was highly variable precluding any clinical correlation. CONCLUSION This study demonstrates that HLA-G is expressed in renal tissue in LN. Our retrospective data suggest that its expression could correlate with response to treatment.
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Affiliation(s)
- V Foschi
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy.,2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - D Bortolotti
- 3 Department of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Italy
| | - A F Doyle
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - V Stratigou
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - L Stephens
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - P Trivedi
- 4 Department of Pathology, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - R Rinaldi
- 5 Section of Pathology and Biomolecular Diagnostics, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy
| | - M Padovan
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy
| | - A Bortoluzzi
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy
| | - L Lightstone
- 6 Section of Renal and Vascular Inflammation, Department of Medicine, Imperial College London, UK.,7 Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - T D Cairns
- 7 Renal and Transplant Centre, Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - M Botto
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - T H Cook
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
| | - R Rizzo
- 3 Department of Medical Sciences, Section of Microbiology and Medical Genetics, University of Ferrara, Italy
| | - M Govoni
- 1 Department of Medical Sciences, Section of Rheumatology, University of Ferrara, Italy
| | - M C Pickering
- 2 Centre for Complement and Inflammation Research, Imperial College London, UK
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Li KJ, Wu CH, Shen CY, Kuo YM, Yu CL, Hsieh SC. Membrane Transfer from Mononuclear Cells to Polymorphonuclear Neutrophils Transduces Cell Survival and Activation Signals in the Recipient Cells via Anti-Extrinsic Apoptotic and MAP Kinase Signaling Pathways. PLoS One 2016; 11:e0156262. [PMID: 27258015 PMCID: PMC4892539 DOI: 10.1371/journal.pone.0156262] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 05/11/2016] [Indexed: 12/11/2022] Open
Abstract
The biological significance of membrane transfer (trogocytosis) between polymorphonuclear neutrophils (PMNs) and mononuclear cells (MNCs) remains unclear. We investigated the biological/immunological effects and molecular basis of trogocytosis among various immune cells in healthy individuals and patients with active systemic lupus erythematosus (SLE). By flow cytometry, we determined that molecules in the immunological synapse, including HLA class-I and-II, CD11b and LFA-1, along with CXCR1, are exchanged among autologous PMNs, CD4+ T cells, and U937 cells (monocytes) after cell-cell contact. Small interfering RNA knockdown of the integrin adhesion molecule CD11a in U937 unexpectedly enhanced the level of total membrane transfer from U937 to PMN cells. Functionally, phagocytosis and IL-8 production by PMNs were enhanced after co-culture with T cells. Total membrane transfer from CD4+ T to PMNs delayed PMN apoptosis by suppressing the extrinsic apoptotic molecules, BAX, MYC and caspase 8. This enhancement of activities of PMNs by T cells was found to be mediated via p38- and P44/42-Akt-MAP kinase pathways and inhibited by the actin-polymerization inhibitor, latrunculin B, the clathrin inhibitor, Pitstop-2, and human immunoglobulin G, but not by the caveolin inhibitor, methyl-β-cyclodextrin. In addition, membrane transfer from PMNs enhanced IL-2 production by recipient anti-CD3/anti-CD28 activated MNCs, and this was suppressed by inhibitors of mitogen-activated protein kinase (PD98059) and protein kinase C (Rottlerin). Of clinical significance, decreased total membrane transfer from PMNs to MNCs in patients with active SLE suppressed mononuclear IL-2 production. In conclusion, membrane transfer from MNCs to PMNs, mainly at the immunological synapse, transduces survival and activation signals to enhance PMN functions and is dependent on actin polymerization, clathrin activation, and Fcγ receptors, while membrane transfer from PMNs to MNCs depends on MAP kinase and PKC signaling. Defective membrane transfer from PMNs to MNCs in patients with active systemic lupus erythematous suppressed activated mononuclear IL-2 production.
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Affiliation(s)
- Ko-Jen Li
- Institute of Clinical Medicine, National Yang-Ming University College of Medicine, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Cheng-Han Wu
- Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chieh-Yu Shen
- Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yu-Min Kuo
- Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chia-Li Yu
- Institute of Molecular Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Song-Chou Hsieh
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- * E-mail:
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Rizzo R, Bortolotti D, Bolzani S, Fainardi E. HLA-G Molecules in Autoimmune Diseases and Infections. Front Immunol 2014; 5:592. [PMID: 25477881 PMCID: PMC4235267 DOI: 10.3389/fimmu.2014.00592] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 11/04/2014] [Indexed: 01/22/2023] Open
Abstract
Human leukocyte antigen (HLA)-G molecule, a non-classical HLA-Ib molecule, is less polymorphic when compared to classical HLA class I molecules. Human leukocyte antigen-G (HLA-G) was first detected on cytotrophoblast cells at the feto-maternal interface but its expression is prevalent during viral infections and several autoimmune diseases. HLA-G gene is characterized by polymorphisms at the 3' un-translated region and 5' upstream regulatory region that regulate its expression and are associated with autoimmune diseases and viral infection susceptibility, creating an unbalanced and pathologic environment. This review focuses on the role of HLA-G genetic polymorphisms, mRNA, and protein expression in autoimmune conditions and viral infections.
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Affiliation(s)
- Roberta Rizzo
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Daria Bortolotti
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Silvia Bolzani
- Section of Microbiology and Medical Genetics, Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Enrico Fainardi
- Neuroradiology Unit, Department of Neurosciences and Rehabilitation, Azienda Ospedaliera-Universitaria Arcispedale S. Anna, Ferrara, Italy
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Bortolotti D, Gentili V, Rotola A, Cassai E, Rizzo R, Luca DD. Impact of HLA-G analysis in prevention, diagnosis and treatment of pathological conditions. World J Methodol 2014; 4:11-25. [PMID: 25237627 PMCID: PMC4145573 DOI: 10.5662/wjm.v4.i1.11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 12/28/2013] [Accepted: 01/16/2014] [Indexed: 02/06/2023] Open
Abstract
Human leukocyte antigen-G (HLA-G) is a non-classical HLA class I molecule that differs from classical HLA class I molecules by low polymorphism and tissue distribution. HLA-G is a tolerogenic molecule with an immune-modulatory and anti-inflammatory function on both innate and adaptative immunity. This peculiar characteristic of HLA-G has led to investigations of its role in pathological conditions in order to define possible uses in diagnosis, prevention and treatment. In recent years, HLA-G has been shown to have an important implication in different inflammatory and autoimmune diseases, pregnancy complications, tumor development and aggressiveness, and susceptibility to viral infections. In fact, HLA-G molecules have been reported to alternate at both genetic and protein level in different disease situations, supporting its crucial role in pathological conditions. Specific pathologies show altered levels of soluble (s)HLA-G and different HLA-G gene polymorphisms seem to correlate with disease. This review aims to update scientific knowledge on the contribution of HLA-G in managing pathological conditions.
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Zhang JB, Wang ZY, Chen J, Wu XD, Zhou B, Yie SM. The expression of human leukocyte antigen G (HLA-G) is associated with sacroiliitis stages of ankylosing spondylitis. Immunol Lett 2013; 152:121-5. [PMID: 23644157 DOI: 10.1016/j.imlet.2013.04.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 03/28/2013] [Accepted: 04/22/2013] [Indexed: 11/19/2022]
Abstract
Recent studies have demonstrated that human leukocyte antigen G (HLA-G) may play an important role in autoimmune diseases. The present study is to investigate whether or not HLA-G is associated with sacroiliitis stages of ankylosing spondylitis (AS), a systemic autoimmune disease. Plasma levels of soluble HLA-G (sHLA-G) and HLA-G expression on the surface of peripheral blood mononuclear cells (PBMCs) were measured in 55 AS patients and 49 healthy controls by using a specific HLA-G ELISA and flow cytometric (FCM) analysis, respectively. Association of HLA-G expression with sacroiliitis stages of the patients was statistically analyzed. The plasma sHLA-G concentrations were noticeably lower in the AS patients when compared to the healthy controls while the mean fluorescence intensity (MFI) of the HLA-G expression on the surface of PBMCs was significantly higher in the AS patients than in the healthy controls (both P<0.0001). The HLA-G expression on the surface of PBMCs, plasma sHLA-G levels and HLA-B27 expression were significantly correlated to each other. Moreover, the plasma sHLA-G was inversely associated with the sacroiliitis stages (P=0.008), while the HLA-G expression on the surface of PBMCs increased from stage 0 to II but decreased in stage III (P=0.001). The significant association of HLA-G expressions with AS sacroiliitis stages suggests that HLA-G is possibly involved in the pathology of the disease. The detection of HLA-G expression may therefore be a useful laboratory test to reveal disease process in AS patients.
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Affiliation(s)
- Jian-Bo Zhang
- Core Laboratory, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, Sichuan 610072, PR China
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Current world literature. Curr Opin Rheumatol 2012; 24:586-94. [PMID: 22871955 DOI: 10.1097/bor.0b013e32835793df] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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