1
|
Tetenborg S, Ariakia F, Martinez-Soler E, Shihabeddin E, Lazart IC, Miller AC, O’Brien J. Trafficking of Connexin36 (Cx36) in the early secretory pathway. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.25.586643. [PMID: 38585986 PMCID: PMC10996632 DOI: 10.1101/2024.03.25.586643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Gap junctions formed by the major neuronal connexin Cx36 function as electrical synapses in the nervous system and provide unique functions such as synchronizing activities or network oscillations. Although the physiological significance of electrical synapses for neuronal networks is well established, little is known about the pathways that regulate the transport of its main component: Cx36. Here we have used HEK293T cells as an expression system in combination with siRNA and BioID screens to study the transition of Cx36 from the ER to the cis Golgi. Our data indicate that the C-terminal tip of Cx36 is a key factor in this process, mediating binding interactions with two distinct components in the early secretory pathway: the COPII complex and the Golgi stacking protein Grasp55. The C-terminal amino acid valine serves as an ER export signal to recruit COPII cargo receptors Sec24A/B/C at ER exit sites, whereas the PDZ binding motif "SAYV" mediates an interaction with Grasp55. These two interactions have opposing effects in their respective compartments. While Sec24 subunits carry Cx36 out of the ER, Grasp55 stabilizes Cx36 in the Golgi as shown in over expression experiments. These early regulatory steps of Cx36 are expected to be essential for the formation, function, regulation and plasticity of electrical synapses in the developing and mature nervous system.
Collapse
Affiliation(s)
| | - Fatemeh Ariakia
- College of Optometry, University of Houston, Houston, TX, USA
- Contributed equally
| | | | - Eyad Shihabeddin
- College of Optometry, University of Houston, Houston, TX, USA
- MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Ignacio Cebrian Lazart
- Instituto de Histología y Embriología de Mendoza (IHEM)-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza 5500, Argentina
- Centre for Genomic Regulation (CRG), The Barcelona Institute for Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain
| | - Adam C. Miller
- Institute of Neuroscience, Department of Biology, University of Oregon, Eugene, OR, USA
| | - John O’Brien
- College of Optometry, University of Houston, Houston, TX, USA
| |
Collapse
|
2
|
Ren X, Amarajeewa AWP, Jayasinghe MDT, Garstka MA. Differences in F pocket impact on HLA I genetic associations with autoimmune diabetes. Front Immunol 2024; 15:1342335. [PMID: 38596688 PMCID: PMC11003304 DOI: 10.3389/fimmu.2024.1342335] [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: 11/21/2023] [Accepted: 02/26/2024] [Indexed: 04/11/2024] Open
Abstract
Introduction Human leukocyte antigen (HLA) I molecules present antigenic peptides to activate CD8+ T cells. Type 1 Diabetes (T1D) is an auto-immune disease caused by aberrant activation of the CD8+ T cells that destroy insulin-producing pancreatic β cells. Some HLA I alleles were shown to increase the risk of T1D (T1D-predisposing alleles), while some reduce this risk (T1D-protective alleles). Methods Here, we compared the T1D-predisposing and T1D-protective allotypes concerning peptide binding, maturation, localization and surface expression and correlated it with their sequences and energetic profiles using experimental and computational methods. Results T1D-predisposing allotypes had more peptide-bound forms and higher plasma membrane levels than T1D-protective allotypes. This was related to the fact that position 116 within the F pocket was more conserved and made more optimal contacts with the neighboring residues in T1D-predisposing allotypes than in protective allotypes. Conclusion Our work uncovers that specific polymorphisms in HLA I molecules potentially influence their susceptibility to T1D.
Collapse
Affiliation(s)
- Xu Ren
- Department of Urology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Core Research Laboratory, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Department of Endocrinology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | - A. W. Peshala Amarajeewa
- Core Research Laboratory, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| | | | - Malgorzata A. Garstka
- Department of Urology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Core Research Laboratory, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Department of Endocrinology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
- Department of Tumor and Immunology, Precision Medical Institute, Western China Science and Technology Innovation Port, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
| |
Collapse
|
3
|
Ravindranath MH, Ravindranath NM, Amato-Menker CJ, El Hilali F, Filippone EJ. Diversity in the HLA-I Recognition of HLA-F Monoclonal Antibodies: HLA-F or HLA-Ib Monospecific, HLA-E or HLA-G Bispecific Antibodies with or without HLA-Ia Reactivity. Antibodies (Basel) 2024; 13:8. [PMID: 38390869 PMCID: PMC10885067 DOI: 10.3390/antib13010008] [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: 09/08/2023] [Revised: 11/06/2023] [Accepted: 01/25/2024] [Indexed: 02/24/2024] Open
Abstract
Previous investigators have used various anti-HLA-F monoclonal antibodies (mAbs) to demonstrate that the tissue distribution of HLA-F is highly restricted. Notably, these mAbs differed in their immunodiagnostic capabilities. Specifically, mAbs Fpep1.1 and FG1 detected HLA-F intracellularly in B cells but not on the cell surface, whereas mAb 3D11 detected HLA-F on the cell surface. The presence of HLA-F on T cells was recognized by mAb FG1 but not by mAb Fpep1.1. mAb 3D11 detected HLA-F on the cell surface of activated B cells and on peripheral blood lymphocytes, but not on the normal cells. Importantly, mAb 3D11 revealed that HLA-F exists as a heavy chain (HC) monomer, rather than as an HC associated with B2m. Although these mAbs are believed to be specific to HLA-F, their monospecificity has not been formally established, which is critical for immunodiagnostic and therapeutic purposes. Previously, we investigated the diversity of HLA class I reactivities of anti-HLA-E mAbs using HLA-I coated multiplex bead assays on a Luminex platform. We reported that more than 80% of the HLA-E mAbs were cross-reactive with other HLA-I molecules, with exceptionally few truly HLA-E-monospecific mAbs. In the present investigation, we generated IgG mAbs against HCs of HLA-F in Balb/C mice and examined the cross-reactivity of anti-HLA-F mAbs with other HLA-I alleles using a multiplex bead assay on the Luminex platform. Beads coated with an array of HLA homo- and heterodimers of different HLA-Ia (HLA-A, HLA-B, and HLA-C) and Ib (HLA-E, HLA-F, and HLA-G) alleles were used to examine the binding of the anti-HLA-F mAbs. Only two mAbs were HLA-F monospecific, and five were HLA-Ib restricted. Several anti-HLA-F mAbs cross-reacted with HLA-E (n = 4), HLA-G (n = 3), HLA-Ia alleles (n = 9), HLA-G and HLA-Ia (n = 2), and HLA-Ib and HLA-Ia (n = 6). This monospecificity and polyreactivity were corroborated by the presence of HLA-F monospecific and HLA-I-shared sequences. This study emphasizes the need to monitor the mono-specificity of HLA-F for reliable immunodiagnostics and passive immunotherapy.
Collapse
Affiliation(s)
- Mepur H Ravindranath
- Department of Hematology and Oncology, Children's Hospital, Los Angeles, CA 90027, USA
- Terasaki Foundation Laboratory, Santa Monica, CA 90064, USA
| | - Narendranath M Ravindranath
- Norris Dental Science Center, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Carly J Amato-Menker
- Department of Microbiology, Immunology and Cell Biology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA
| | - Fatiha El Hilali
- Medico-Surgical, Biomedicine and Infectiology Research Laboratory, The Faculty of Medicine and Pharmacy of Laayoune & Agadir, Ibnou Zohr University, Agadir 80000, Morocco
| | - Edward J Filippone
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19145, USA
| |
Collapse
|
4
|
Paganini J, Faux P, Beley S, Picard C, Chiaroni J, Di Cristofaro J. HLA-F transcriptional and protein differential expression according to its genetic polymorphisms. HLA 2023; 102:578-589. [PMID: 37166140 DOI: 10.1111/tan.15087] [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: 12/13/2022] [Revised: 03/21/2023] [Accepted: 04/20/2023] [Indexed: 05/12/2023]
Abstract
Many specificities single out HLA-F: its structure, expression regulation at cell membrane and function. HLA-F mRNA is detected in the most cell types and the protein is localized in the ER and Golgi apparatus. When expressed at cell surface, HLA-F may be associated to β2-microglobulin and peptide or expressed as an open-conformer molecule. HLA-F reaches the membrane upon activation of different primary cell types and cell-lines. HLA-F has its highest affinity for the KIR3DS1-activating NK receptor, but also binds inhibitory immune receptors. Some studies reported that HLA-F expression is associated with its genotype. Higher HLA-F mRNA expression associated with F*01:01:02, and 3 noncoding SNPs, rs1362126, rs2523405, and rs2523393, located in HLA-F-AS1 or upstream the HLA-F sequence were associated with HLA-F mRNA expression. Given the implication of HLA-F in many clinical setting, and the undisclosed process of its expression regulation, we aim to confirm the effect of the aforementioned SNPs with HLA-F transcriptional and protein expression. We analyzed the distribution, frequency and linkage disequilibrium of these SNPs at worldwide scale in the 1000 Genomes Project samples. Influence on the genotype of each SNP on HLA-F expression was explored using RNAseq data from the 1000 Genomes Project, and using Q-PCR and intracellular cytometry in PBMC from healthy individuals. Our results show that the SNPs under studied displayed remarkably different allelic proportion according to geography and confirm that rs1362126, rs2523405, and rs2523393 displayed the most concordant results, with the highest effect size and a double-dose effect.
Collapse
Affiliation(s)
| | - Pierre Faux
- GenPhySE, Université de Toulouse, INRAE, INPT, INP-ENVT, Castanet Tolosan, France
- Aix Marseille University, CNRS, EFS, ADES, UMR7268, Marseille, France
| | - Sophie Beley
- Aix Marseille University, CNRS, EFS, ADES, UMR7268, Marseille, France
- Etablissement Français du Sang PACA Corse, Marseille, France
| | - Christophe Picard
- Aix Marseille University, CNRS, EFS, ADES, UMR7268, Marseille, France
- Etablissement Français du Sang PACA Corse, Marseille, France
| | - Jacques Chiaroni
- Aix Marseille University, CNRS, EFS, ADES, UMR7268, Marseille, France
- Etablissement Français du Sang PACA Corse, Marseille, France
| | - Julie Di Cristofaro
- Aix Marseille University, CNRS, EFS, ADES, UMR7268, Marseille, France
- Etablissement Français du Sang PACA Corse, Marseille, France
| |
Collapse
|
5
|
He W, Gea-Mallorquí E, Colin-York H, Fritzsche M, Gillespie GM, Brackenridge S, Borrow P, McMichael AJ. Intracellular trafficking of HLA-E and its regulation. J Exp Med 2023; 220:214089. [PMID: 37140910 PMCID: PMC10165540 DOI: 10.1084/jem.20221941] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 03/13/2023] [Accepted: 04/17/2023] [Indexed: 05/05/2023] Open
Abstract
Interest in MHC-E-restricted CD8+ T cell responses has been aroused by the discovery of their efficacy in controlling simian immunodeficiency virus (SIV) infection in a vaccine model. The development of vaccines and immunotherapies utilizing human MHC-E (HLA-E)-restricted CD8+ T cell response requires an understanding of the pathway(s) of HLA-E transport and antigen presentation, which have not been clearly defined previously. We show here that, unlike classical HLA class I, which rapidly exits the endoplasmic reticulum (ER) after synthesis, HLA-E is largely retained because of a limited supply of high-affinity peptides, with further fine-tuning by its cytoplasmic tail. Once at the cell surface, HLA-E is unstable and is rapidly internalized. The cytoplasmic tail plays a crucial role in facilitating HLA-E internalization, which results in its enrichment in late and recycling endosomes. Our data reveal distinctive transport patterns and delicate regulatory mechanisms of HLA-E, which help to explain its unusual immunological functions.
Collapse
Affiliation(s)
- Wanlin He
- Nuffield Department of Medicine, Center for Immuno-Oncology, University of Oxford, Oxford, UK
| | - Ester Gea-Mallorquí
- Nuffield Department of Medicine, Center for Immuno-Oncology, University of Oxford, Oxford, UK
| | - Huw Colin-York
- Kennedy Institute of Rheumatology, University of Oxford , Oxford, UK
| | - Marco Fritzsche
- Kennedy Institute of Rheumatology, University of Oxford , Oxford, UK
| | - Geraldine M Gillespie
- Nuffield Department of Medicine, Center for Immuno-Oncology, University of Oxford, Oxford, UK
| | - Simon Brackenridge
- Nuffield Department of Medicine, Center for Immuno-Oncology, University of Oxford, Oxford, UK
| | - Persephone Borrow
- Nuffield Department of Medicine, Center for Immuno-Oncology, University of Oxford, Oxford, UK
| | - Andrew J McMichael
- Nuffield Department of Medicine, Center for Immuno-Oncology, University of Oxford, Oxford, UK
| |
Collapse
|
6
|
Ravindranath MH, Ravindranath NM, Selvan SR, Hilali FE, Amato-Menker CJ, Filippone EJ. Cell Surface B2m-Free Human Leukocyte Antigen (HLA) Monomers and Dimers: Are They Neo-HLA Class and Proto-HLA? Biomolecules 2023; 13:1178. [PMID: 37627243 PMCID: PMC10452486 DOI: 10.3390/biom13081178] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/17/2023] [Accepted: 07/17/2023] [Indexed: 08/27/2023] Open
Abstract
Cell surface HLA-I molecules (Face-1) consist of a polypeptide heavy chain (HC) with two groove domains (G domain) and one constant domain (C-domain) as well as a light chain, B2-microglobulin (B2m). However, HCs can also independently emerge unfolded on the cell surface without peptides as B2m-free HC monomers (Face-2), B2m-free HC homodimers (Face 3), and B2m-free HC heterodimers (Face-4). The transport of these HLA variants from ER to the cell surface was confirmed by antiviral antibiotics that arrest the release of newly synthesized proteins from the ER. Face-2 occurs at low levels on the normal cell surface of the lung, bronchi, epidermis, esophagus, breast, stomach, ilium, colorectum, gall bladder, urinary bladder, seminal vesicles ovarian epithelia, endometrium, thymus, spleen, and lymphocytes. They are upregulated on immune cells upon activation by proinflammatory cytokines, anti-CD3 antibodies, antibiotics (e.g., ionomycin), phytohemagglutinin, retinoic acid, and phorbol myristate acetate. Their density on the cell surface remains high as long as the cells remain in an activated state. After activation-induced upregulation, the Face-2 molecules undergo homo- and hetero-dimerization (Face-3 and Face-4). Alterations in the redox environment promote dimerization. Heterodimerization can occur among and between the alleles of different haplotypes. The glycosylation of these variants differ from that of Face-1, and they may occur with bound exogenous peptides. Spontaneous arthritis occurs in HLA-B27+ mice lacking B2m (HLA-B27+ B2m-/-) but not in HLA-B27+ B2m+/- mice. The mice with HLA-B27 in Face-2 spontaneous configuration develop symptoms such as changes in nails and joints, hair loss, and swelling in paws, leading to ankyloses. Anti-HC-specific mAbs delay disease development. Some HLA-I polyreactive mAbs (MEM series) used for immunostaining confirm the existence of B2m-free variants in several cancer cells. The upregulation of Face-2 in human cancers occurs concomitantly with the downregulation of intact HLAs (Face-1). The HLA monomeric and dimeric variants interact with inhibitory and activating ligands (e.g., KIR), growth factors, cytokines, and neurotransmitters. Similarities in the amino acid sequences of the HLA-I variants and HLA-II β-chain suggest that Face-2 could be the progenitor of both HLA classes. These findings may support the recognition of these variants as a neo-HLA class and proto-HLA.
Collapse
Affiliation(s)
- Mepur H. Ravindranath
- Department of Hematology and Oncology, Children’s Hospital, Los Angeles, CA 90027, USA
- Terasaki Foundation Laboratory, Santa Monica, CA 90064, USA
| | - Narendranath M. Ravindranath
- Norris Dental Science Center, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA 90089, USA;
| | - Senthamil R. Selvan
- Division of Immunology and Hematology Devices, OHT 7: Office of In Vitro Diagnostics, Office of Product Evaluation and Quality, Center for Devices and Radiological Health, Food and Drug Administration (FDA), Silver Spring, MD 20993, USA;
| | - Fatiha El Hilali
- Medico-Surgical, Biomedicine and Infectiology Research Laboratory, The Faculty of Medicine and Pharmacy of Laayoune & Agadir, Ibnou Zohr University, Agadir 80000, Morocco;
| | - Carly J. Amato-Menker
- Department of Microbiology, Immunology and Cell Biology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA;
| | - Edward J. Filippone
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19145, USA;
| |
Collapse
|
7
|
De Re V, Tornesello ML, Racanelli V, Prete M, Steffan A. Non-Classical HLA Class 1b and Hepatocellular Carcinoma. Biomedicines 2023; 11:1672. [PMID: 37371767 DOI: 10.3390/biomedicines11061672] [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: 04/28/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
A number of studies are underway to gain a better understanding of the role of immunity in the pathogenesis of hepatocellular carcinoma and to identify subgroups of individuals who may benefit the most from systemic therapy according to the etiology of their tumor. Human leukocyte antigens play a key role in antigen presentation to T cells. This is fundamental to the host's defense against pathogens and tumor cells. In addition, HLA-specific interactions with innate lymphoid cell receptors, such those present on natural killer cells and innate lymphoid cell type 2, have been shown to be important activators of immune function in the context of several liver diseases. More recent studies have highlighted the key role of members of the non-classical HLA-Ib and the transcript adjacent to the HLA-F locus, FAT10, in hepatocarcinoma. The present review analyzes the major contribution of these molecules to hepatic viral infection and hepatocellular prognosis. Particular attention has been paid to the association of natural killer and Vδ2 T-cell activation, mediated by specific HLA class Ib molecules, with risk assessment and novel treatment strategies to improve immunotherapy in HCC.
Collapse
Affiliation(s)
- Valli De Re
- Immunopathology and Cancer Biomarkers Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituti di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
| | - Maria Lina Tornesello
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", 80131 Naples, Italy
| | - Vito Racanelli
- Department of Interdisciplinary Medicine, School of Medicine, 'Aldo Moro' University of Bari, 70124 Bari, Italy
| | - Marcella Prete
- Department of Interdisciplinary Medicine, School of Medicine, 'Aldo Moro' University of Bari, 70124 Bari, Italy
| | - Agostino Steffan
- Immunopathology and Cancer Biomarkers Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituti di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
| |
Collapse
|
8
|
Brochu H, Wang R, Tollison T, Pyo CW, Thomas A, Tseng E, Law L, Picker LJ, Gale M, Geraghty DE, Peng X. Alternative splicing and genetic variation of mhc-e: implications for rhesus cytomegalovirus-based vaccines. Commun Biol 2022; 5:1387. [PMID: 36536032 PMCID: PMC9762870 DOI: 10.1038/s42003-022-04344-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022] Open
Abstract
Rhesus cytomegalovirus (RhCMV)-based vaccination against Simian Immunodeficiency virus (SIV) elicits MHC-E-restricted CD8+ T cells that stringently control SIV infection in ~55% of vaccinated rhesus macaques (RM). However, it is unclear how accurately the RM model reflects HLA-E immunobiology in humans. Using long-read sequencing, we identified 16 Mamu-E isoforms and all Mamu-E splicing junctions were detected among HLA-E isoforms in humans. We also obtained the complete Mamu-E genomic sequences covering the full coding regions of 59 RM from a RhCMV/SIV vaccine study. The Mamu-E gene was duplicated in 32 (54%) of 59 RM. Among four groups of Mamu-E alleles: three ~5% divergent full-length allele groups (G1, G2, G2_LTR) and a fourth monomorphic group (G3) with a deletion encompassing the canonical Mamu-E exon 6, the presence of G2_LTR alleles was significantly (p = 0.02) associated with the lack of RhCMV/SIV vaccine protection. These genomic resources will facilitate additional MHC-E targeted translational research.
Collapse
Affiliation(s)
- Hayden Brochu
- Department of Molecular Biomedical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC, 27607, USA
- Bioinformatics Graduate Program, North Carolina State University, Raleigh, NC, 27695, USA
| | - Ruihan Wang
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Tammy Tollison
- Department of Molecular Biomedical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC, 27607, USA
| | - Chul-Woo Pyo
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Alexander Thomas
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | | | - Lynn Law
- Department of Immunology, University of Washington, Seattle, WA, USA
- Center for Innate Immunity and Immune Diseases, University of Washington, Seattle, WA, USA
| | - Louis J Picker
- Vaccine and Gene Therapy Institute, Oregon Health & Science University, Beaverton, OR, 97006, USA
| | - Michael Gale
- Department of Immunology, University of Washington, Seattle, WA, USA
- Center for Innate Immunity and Immune Diseases, University of Washington, Seattle, WA, USA
- Washington National Primate Research Center, University of Washington, Seattle, WA, USA
| | - Daniel E Geraghty
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA.
| | - Xinxia Peng
- Department of Molecular Biomedical Sciences, North Carolina State University College of Veterinary Medicine, Raleigh, NC, 27607, USA.
- Bioinformatics Graduate Program, North Carolina State University, Raleigh, NC, 27695, USA.
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC, 27695, USA.
| |
Collapse
|
9
|
Szymczak F, Alvelos MI, Marín-Cañas S, Castela Â, Demine S, Colli ML, Op de Beeck A, Thomaidou S, Marselli L, Zaldumbide A, Marchetti P, Eizirik DL. Transcription and splicing regulation by NLRC5 shape the interferon response in human pancreatic β cells. SCIENCE ADVANCES 2022; 8:eabn5732. [PMID: 36103539 PMCID: PMC9473574 DOI: 10.1126/sciadv.abn5732] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
IFNα is a key regulator of the dialogue between pancreatic β cells and the immune system in early type 1 diabetes (T1D). IFNα up-regulates HLA class I expression in human β cells, fostering autoantigen presentation to the immune system. We observed by bulk and single-cell RNA sequencing that exposure of human induced pluripotent-derived islet-like cells to IFNα induces expression of HLA class I and of other genes involved in antigen presentation, including the transcriptional activator NLRC5. We next evaluated the global role of NLRC5 in human insulin-producing EndoC-βH1 and human islet cells by RNA sequencing and targeted gene/protein determination. NLRC5 regulates expression of HLA class I, antigen presentation-related genes, and chemokines. NLRC5 also mediates the effects of IFNα on alternative splicing, a generator of β cell neoantigens, suggesting that it is a central player of the effects of IFNα on β cells that contribute to trigger and amplify autoimmunity in T1D.
Collapse
Affiliation(s)
- Florian Szymczak
- ULB Center for Diabetes Research, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
- Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles-Vrije Universiteit Brussel, Brussels, Belgium
| | - Maria Inês Alvelos
- ULB Center for Diabetes Research, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
| | - Sandra Marín-Cañas
- ULB Center for Diabetes Research, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
| | - Ângela Castela
- ULB Center for Diabetes Research, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
| | - Stéphane Demine
- Indiana Biosciences Research Institute, Indianapolis, IN, USA
| | - Maikel Luis Colli
- ULB Center for Diabetes Research, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
| | - Anne Op de Beeck
- ULB Center for Diabetes Research, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
| | - Sofia Thomaidou
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Lorella Marselli
- Department of Clinical and Experimental Medicine, Islet Cell Laboratory, University of Pisa, Pisa, Italy
| | - Arnaud Zaldumbide
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, Netherlands
| | - Piero Marchetti
- Department of Clinical and Experimental Medicine, Islet Cell Laboratory, University of Pisa, Pisa, Italy
| | - Décio L. Eizirik
- ULB Center for Diabetes Research, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
- Welbio, Medical Faculty, Université Libre De Bruxelles (ULB), Brussels, Belgium
| |
Collapse
|
10
|
Arnaiz-Villena A, Suarez-Trujillo F, Juarez I, Rodríguez-Sainz C, Palacio-Gruber J, Vaquero-Yuste C, Molina-Alejandre M, Fernández-Cruz E, Martin-Villa JM. Evolution and molecular interactions of major histocompatibility complex (MHC)-G, -E and -F genes. Cell Mol Life Sci 2022; 79:464. [PMID: 35925520 PMCID: PMC9352621 DOI: 10.1007/s00018-022-04491-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 11/30/2022]
Abstract
Classical HLA (Human Leukocyte Antigen) is the Major Histocompatibility Complex (MHC) in man. HLA genes and disease association has been studied at least since 1967 and no firm pathogenic mechanisms have been established yet. HLA-G immune modulation gene (and also -E and -F) are starting the same arduous way: statistics and allele association are the trending subjects with the same few results obtained by HLA classical genes, i.e., no pathogenesis may be discovered after many years of a great amount of researchers’ effort. Thus, we believe that it is necessary to follow different research methodologies: (1) to approach this problem, based on how evolution has worked maintaining together a cluster of immune-related genes (the MHC) in a relatively short chromosome area since amniotes to human at least, i.e., immune regulatory genes (MHC-G, -E and -F), adaptive immune classical class I and II genes, non-adaptive immune genes like (C2, C4 and Bf) (2); in addition to using new in vitro models which explain pathogenetics of HLA and disease associations. In fact, this evolution may be quite reliably studied during about 40 million years by analyzing the evolution of MHC-G, -E, -F, and their receptors (KIR—killer-cell immunoglobulin-like receptor, NKG2—natural killer group 2-, or TCR-T-cell receptor—among others) in the primate evolutionary lineage, where orthology of these molecules is apparently established, although cladistic studies show that MHC-G and MHC-B genes are the ancestral class I genes, and that New World apes MHC-G is paralogous and not orthologous to all other apes and man MHC-G genes. In the present review, we outline past and possible future research topics: co-evolution of adaptive MHC classical (class I and II), non-adaptive (i.e., complement) and modulation (i.e., non-classical class I) immune genes may imply that the study of full or part of MHC haplotypes involving several loci/alleles instead of single alleles is important for uncovering HLA and disease pathogenesis. It would mainly apply to starting research on HLA-G extended haplotypes and disease association and not only using single HLA-G genetic markers.
Collapse
Affiliation(s)
- Antonio Arnaiz-Villena
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain.
| | - Fabio Suarez-Trujillo
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Ignacio Juarez
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Carmen Rodríguez-Sainz
- Instituto de Investigaciones Sanitarias Gregorio Marañón, Hospital Gregorio Marañón, Madrid, Spain
| | - José Palacio-Gruber
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Christian Vaquero-Yuste
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Marta Molina-Alejandre
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| | - Eduardo Fernández-Cruz
- Instituto de Investigaciones Sanitarias Gregorio Marañón, Hospital Gregorio Marañón, Madrid, Spain
| | - José Manuel Martin-Villa
- Departamento de Inmunología, Facultad de Medicina, Universidad Complutense de Madrid, Pabellón 5, planta 4. Avda. Complutense s/n, 28040, Madrid, Spain
| |
Collapse
|
11
|
Hrbac T, Kopkova A, Siegl F, Vecera M, Ruckova M, Kazda T, Jancalek R, Hendrych M, Hermanova M, Vybihal V, Fadrus P, Smrcka M, Sokol F, Kubes V, Lipina R, Slaby O, Kren L, Sana J. HLA-E and HLA-F Are Overexpressed in Glioblastoma and HLA-E Increased After Exposure to Ionizing Radiation. Cancer Genomics Proteomics 2022; 19:151-162. [PMID: 35181585 PMCID: PMC8865046 DOI: 10.21873/cgp.20311] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/08/2021] [Accepted: 01/21/2022] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND/AIM Glioblastoma (GBM) is one of the deadliest human cancers responding very poorly to therapy. Although the central nervous system has been traditionally considered an immunologically privileged site with an enhanced immune response, GBM appears to benefit from this immunosuppressive milieu. Immunomodulatory molecules play an important role in immune tumor-host interactions. Non-classical human leukocyte antigens (HLA) class Ib molecules HLA-E, HLA-F, and HLA-G have been previously described to be involved in protecting semi-allogeneic fetal allografts from the maternal immune response and in transplant tolerance as well as tumoral immune escape. Unfortunately, their role in GBM remains poorly understood. Our study, therefore, aimed to characterize the relationship between the expression of these molecules in GBM on the transcriptional level and clinicopathological and molecular features of GBM as well as the effect of ionizing radiation. MATERIALS AND METHODS We performed the analysis of HLA-E, HLA-F, and HLA-G mRNA expression in 69 GBM tissue samples and 21 non-tumor brain tissue samples (controls) by reverse transcription polymerase chain reaction. Furthermore, two primary GBM cell cultures had been irradiated to identify the effect of ionizing radiation on the expression of non-classical HLA molecules. RESULTS Analyses revealed that both HLA-E and HLA-F are significantly up-regulated in GBM samples. Subsequent survival analysis showed a significant association between low expression of HLA-E and shorter survival of GBM patients. The dysregulated expression of both molecules was also observed between patients with methylated and unmethylated O-6-methylguanine-DNA methyltransferase (MGMT) promoter. Finally, we showed that ionizing radiation increased HLA-E expression level in GBM cells in vitro. CONCLUSION HLA-E and HLA-F play an important role in GBM biology and could be used as diagnostic biomarkers, and in the case of HLA-E also as a prognostic biomarker.
Collapse
Affiliation(s)
- Tomas Hrbac
- Department of Neurosurgery, University Hospital Ostrava, Ostrava, Czech Republic
| | - Alena Kopkova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Frantisek Siegl
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Marek Vecera
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Michaela Ruckova
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Tomas Kazda
- Department of Radiation Oncology, Masaryk Memorial Cancer Institute and Faculty of Medicine of Masaryk University, Brno, Czech Republic
| | - Radim Jancalek
- Department of Neurosurgery, St. Anne's University Hospital and Faculty of Medicine of Masaryk University, Brno, Czech Republic
| | - Michal Hendrych
- First Department of Pathology, St. Anne's University Hospital and Faculty of Medicine of Masaryk University, Brno, Czech Republic
| | - Marketa Hermanova
- First Department of Pathology, St. Anne's University Hospital and Faculty of Medicine of Masaryk University, Brno, Czech Republic
| | - Vaclav Vybihal
- Department of Neurosurgery, University Hospital Brno, Brno, Czech Republic
| | - Pavel Fadrus
- Department of Neurosurgery, University Hospital Brno, Brno, Czech Republic
| | - Martin Smrcka
- Department of Neurosurgery, University Hospital Brno, Brno, Czech Republic
| | - Filip Sokol
- Department of Pathology, University Hospital Brno, Brno, Czech Republic
| | - Vaclav Kubes
- Department of Pathology, University Hospital Brno, Brno, Czech Republic
| | - Radim Lipina
- Department of Neurosurgery, University Hospital Ostrava, Ostrava, Czech Republic
| | - Ondrej Slaby
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Department of Biology, Faculty of Medicine of Masaryk University, Brno, Czech Republic
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Leos Kren
- Department of Pathology, University Hospital Brno, Brno, Czech Republic;
| | - Jiri Sana
- Central European Institute of Technology, Masaryk University, Brno, Czech Republic;
- Department of Comprehensive Cancer Care, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| |
Collapse
|
12
|
Ravindranath MH, Ravindranath NM, Selvan SR, Filippone EJ, Amato-Menker CJ, El Hilali F. Four Faces of Cell-Surface HLA Class-I: Their Antigenic and Immunogenic Divergence Generating Novel Targets for Vaccines. Vaccines (Basel) 2022; 10:vaccines10020339. [PMID: 35214796 PMCID: PMC8878457 DOI: 10.3390/vaccines10020339] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/07/2022] [Accepted: 02/17/2022] [Indexed: 12/19/2022] Open
Abstract
Leukocyte cell-surface HLA-I molecules, involved in antigen presentation of peptides to CD8+ T-cells, consist of a heavy chain (HC) non-covalently linked to β2-microglobulin (β2m) (Face-1). The HC amino acid composition varies across all six isoforms of HLA-I, while that of β2m remains the same. Each HLA-allele differs in one or more amino acid sequences on the HC α1 and α2 helices, while several sequences among the three helices are conserved. HCs without β2m (Face-2) are also observed on human cells activated by malignancy, viral transformation, and cytokine or chemokine-mediated inflammation. In the absence of β2m, the monomeric Face-2 exposes immunogenic cryptic sequences on these cells as confirmed by HLA-I monoclonal antibodies (LA45, L31, TFL-006, and TFL-007). Furthermore, such exposure enables dimerization between two Face-2 molecules by SH-linkage, salt linkage, H-bonding, and van der Waal forces. In HLA-B27, the linkage between two heavy chains with cysteines at position of 67 of the amino acid residues was documented. Similarly, several alleles of HLA-A, B, C, E, F and G express cysteine at 67, 101, and 164, and additionally, HLA-G expresses cysteine at position 42. Thus, the monomeric HC (Face-2) can dimerize with another HC of its own allele, as homodimers (Face-3), or with a different HC-allele, as heterodimers (Face-4). The presence of Face-4 is well documented in HLA-F. The post-translational HLA-variants devoid of β2m may expose several cryptic linear and non-linear conformationally altered sequences to generate novel epitopes. The objective of this review, while unequivocally confirming the post-translational variants of HLA-I, is to highlight the scientific and clinical importance of the four faces of HLA and to prompt further research to elucidate their functions and their interaction with non-HLA molecules during inflammation, infection, malignancy and transplantation. Indeed, these HLA faces may constitute novel targets for passive and active specific immunotherapy and vaccines.
Collapse
Affiliation(s)
- Mepur H. Ravindranath
- Department of Hematology and Oncology, Children’s Hospital, Los Angeles, CA 90027, USA
- Emeritus Research Scientist at Terasaki Foundation Laboratory, Santa Monica, CA 90064, USA
- Correspondence:
| | - Narendranath M. Ravindranath
- Norris Dental Science Center, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA 90089, USA;
| | | | - Edward J. Filippone
- Division of Nephrology, Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19145, USA;
| | - Carly J. Amato-Menker
- Department of Microbiology, Immunology and Cell Biology, School of Medicine, West Virginia University, Morgantown, WV 26506, USA;
| | - Fatiha El Hilali
- The Faculty of Medicine and Pharmacy of Laayoune, Ibn Zohr University, Agadir 70000, Morocco;
| |
Collapse
|
13
|
Lee GS, Zhang J, Wu Y, Zhou Y. 14-3-3 proteins promote synaptic localization of N-methyl d-aspartate receptors (NMDARs) in mouse hippocampal and cortical neurons. PLoS One 2021; 16:e0261791. [PMID: 34962957 PMCID: PMC8714094 DOI: 10.1371/journal.pone.0261791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/09/2021] [Indexed: 11/19/2022] Open
Abstract
One of the core pathogenic mechanisms for schizophrenia is believed to be dysfunction in glutamatergic synaptic transmissions, particularly hypofunction of N-methyl d-aspartate receptors (NMDARs). Previously we showed that 14-3-3 functional knockout mice exhibit schizophrenia-associated behaviors accompanied by reduced synaptic NMDARs in forebrain excitatory neurons. To investigate how 14-3-3 proteins regulate synaptic localization of NMDARs, here we examined changes in levels of synaptic NMDARs upon 14-3-3 inhibition in primary neurons. Expression of 14-3-3 protein inhibitor (difopein) in primary glutamatergic cortical and hippocampal neurons resulted in lower number of synaptic puncta containing NMDARs, including the GluN1, GluN2A, or GluN2B subunits. In heterologous cells, 14-3-3 proteins enhanced surface expression of these NMDAR subunits. Furthermore, we identified that 14-3-3ζ and ε isoforms interact with NMDARs via binding to GluN2A and GluN2B subunits. Taken together, our results demonstrate that 14-3-3 proteins play a critical role in NMDAR synaptic trafficking by promoting surface delivery of NMDAR subunits GluN1, GluN2A, and GluN2B. As NMDAR hypofunctionality is known to act as a convergence point for progression of symptoms of schizophrenia, further studies on these signaling pathways may help understand how dysfunction of 14-3-3 proteins can cause NMDAR hypofunctionality and lead to schizophrenia-associated behaviors.
Collapse
Affiliation(s)
- Gloria S. Lee
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, United States of America
| | - Jiajing Zhang
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, United States of America
| | - Yuying Wu
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, United States of America
| | - Yi Zhou
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, Florida, United States of America
| |
Collapse
|
14
|
Neuchel C, Fürst D, Tsamadou C, Schrezenmeier H, Mytilineos J. Extended loci histocompatibility matching in HSCT-Going beyond classical HLA. Int J Immunogenet 2021; 48:299-316. [PMID: 34109752 DOI: 10.1111/iji.12545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/26/2021] [Accepted: 05/17/2021] [Indexed: 12/20/2022]
Abstract
Unrelated haematopoietic stem cell transplantation (HSCT) has evolved from an experimental protocol to a potentially curative first-line treatment in a variety of haematologic malignancies. The continuous refinement of treatment protocols and supportive care paired with ongoing achievements in the technological field of histocompatibility testing enabled this transformation. Without a doubt, HLA matching is still the foremost criterion for donor selection in unrelated HSCT. However, HSCT-related treatment complications still occur frequently, often resulting in patients suffering severely or even dying as a consequence of such complications. Current literature indicates that other immune system modulating factors may play a role in the setting of HSCT. In this review, we discuss the current clinical evidence of a possible influence of nonclassical HLA antigens HLA-E, HLA-F, and HLA-G as well as the HLA-like molecules MICA and MICB, in HSCT.
Collapse
Affiliation(s)
- Christine Neuchel
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Daniel Fürst
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Chrysanthi Tsamadou
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Hubert Schrezenmeier
- Institute of Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Transfusion Service, Baden Wuerttemberg-Hessen, and University Hospital Ulm, Ulm, Germany
- Institute of Transfusion Medicine, University of Ulm, Ulm, Germany
| | - Joannis Mytilineos
- ZKRD - Zentrales Knochenmarkspender-Register für Deutschland, German National Bone Marrow Donor Registry, Ulm, Germany
| |
Collapse
|
15
|
Shahbaz S, Jovel J, Elahi S. Differential transcriptional and functional properties of regulatory T cells in HIV-infected individuals on antiretroviral therapy and long-term non-progressors. Clin Transl Immunology 2021; 10:e1289. [PMID: 34094548 PMCID: PMC8155695 DOI: 10.1002/cti2.1289] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/09/2021] [Accepted: 04/29/2021] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES Regulatory T cells (Tregs) are widely recognised as a subset of CD4+CD25+FOXP3+ T cells that have a key role in maintaining immune homeostasis. The impact of HIV-1 infection on immunological properties and effector functions of Tregs has remained the topic of debate and controversy. In the present study, we investigated transcriptional profile and functional properties of Tregs in HIV-1-infected individuals either receiving antiretroviral therapy (ART, n = 50) or long-term non-progressors (LTNPs, n = 24) compared to healthy controls (HCs, n = 38). METHODS RNA sequencing (RNAseq), flow cytometry-based immunophenotyping and functional assays were performed to study Tregs in different HIV cohorts. RESULTS Our RNAseq analysis revealed that Tregs exhibit different transcriptional profiles in HIV-infected individuals. While Tregs from patients on ART upregulate pathways associated with a more suppressive (activated) phenotype, Tregs in LTNPs exhibit upregulation of pathways associated with impaired suppressive properties. These observations may explain a higher propensity for autoimmune diseases in LTNPs. Also, we found substantial upregulation of HLA-F mRNA and HLA-F protein in Tregs from HIV-infected subjects compared to healthy individuals. These observations highlight a potential role for this non-classical HLA in Tregs in the context of HIV infection, which should be investigated further in other chronic viral infections and cancer. CONCLUSION Our study has provided a novel insight into Tregs at the transcriptional and functional levels in different HIV-infected groups.
Collapse
Affiliation(s)
- Shima Shahbaz
- School of DentistryFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABCanada
| | - Juan Jovel
- School of DentistryFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABCanada
| | - Shokrollah Elahi
- School of DentistryFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABCanada
- Department of Medical Microbiology and ImmunologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABCanada
- Department of OncologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABCanada
- Li Ka Shing Institute of VirologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonABCanada
| |
Collapse
|
16
|
Evolution of HLA-F and its orthologues in primate species: a complex tale of conservation, diversification and inactivation. Immunogenetics 2020; 72:475-487. [PMID: 33184728 PMCID: PMC7725694 DOI: 10.1007/s00251-020-01187-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/03/2020] [Indexed: 02/07/2023]
Abstract
HLA-F represents one of the nonclassical MHC class I molecules in humans. Its main characteristics involve low levels of polymorphism in combination with a restricted tissue distribution. This signals that the gene product executes a specialised function, which, however, is still poorly understood. Relatively little is known about the evolutionary equivalents of this gene in nonhuman primates, especially with regard to population data. Here we report a comparative genetic analysis of the orthologous genes of HLA-F in various great ape, Old World monkey (OWM), and New World monkey (NWM) species. HLA-F-related transcripts were found in all subjects studied. Low levels of polymorphism were encountered, although the length of the predicted gene products may vary. In most species, one or two transcripts were discovered, indicating the presence of only one active F-like gene per chromosome. An exception was provided by a New World monkey species, namely, the common marmoset. In this species, the gene has been subject to duplication, giving rise to up to six F-like transcripts per animal. In humans, great apes, and OWM, and probably the majority of the NWM species, the evolutionary equivalents of the HLA-F gene experienced purifying selection. In the marmoset, however, the gene was initially duplicated, but the expansion was subjected afterwards to various mechanisms of genetic inactivation, as evidenced by the presence of pseudogenes and an array of genetic artefacts in a section of the transcripts.
Collapse
|
17
|
Bone RN, Oyebamiji O, Talware S, Selvaraj S, Krishnan P, Syed F, Wu H, Evans-Molina C. A Computational Approach for Defining a Signature of β-Cell Golgi Stress in Diabetes. Diabetes 2020; 69:2364-2376. [PMID: 32820009 PMCID: PMC7576569 DOI: 10.2337/db20-0636] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/07/2020] [Indexed: 02/06/2023]
Abstract
The Golgi apparatus (GA) is an important site of insulin processing and granule maturation, but whether GA organelle dysfunction and GA stress are present in the diabetic β-cell has not been tested. We used an informatics-based approach to develop a transcriptional signature of β-cell GA stress using existing RNA sequencing and microarray data sets generated using human islets from donors with diabetes and islets where type 1 (T1D) and type 2 (T2D) diabetes had been modeled ex vivo. To narrow our results to GA-specific genes, we applied a filter set of 1,030 genes accepted as GA associated. In parallel, we generated an RNA-sequencing data set from human islets treated with brefeldin A (BFA), a known GA stress inducer. Overlapping the T1D and T2D groups with the BFA data set, we identified 120 and 204 differentially expressed genes, respectively. In both the T1D and T2D models, pathway analyses revealed that the top pathways were associated with GA integrity, organization, and trafficking. Quantitative RT-PCR was used to validate a common signature of GA stress that included ATF3, ARF4, CREB3, and COG6 Taken together, these data indicate that GA-associated genes are dysregulated in diabetes and identify putative markers of β-cell GA stress.
Collapse
Affiliation(s)
- Robert N Bone
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - Olufunmilola Oyebamiji
- Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN
| | - Sayali Talware
- Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN
| | - Sharmila Selvaraj
- Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN
| | - Preethi Krishnan
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN
| | - Farooq Syed
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - Huanmei Wu
- Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN
| | - Carmella Evans-Molina
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN
- Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Indianapolis, IN
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN
- Richard L. Roudebush VA Medical Center, Indianapolis, IN
| |
Collapse
|
18
|
Wuerfel FM, Huebner H, Häberle L, Gass P, Hein A, Jud SM, Hack CC, Wunderle M, Schulz-Wendtland R, Erber R, Hartmann A, Ekici AB, Beckmann MW, Fasching PA, Ruebner M. HLA-G and HLA-F protein isoform expression in breast cancer patients receiving neoadjuvant treatment. Sci Rep 2020; 10:15750. [PMID: 32978482 PMCID: PMC7519664 DOI: 10.1038/s41598-020-72837-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 09/02/2020] [Indexed: 02/07/2023] Open
Abstract
The immunosuppressive human leukocyte antigens HLA-G and HLA-F are expressed on trophoblast and malignant cells. Four membrane-bound and three soluble HLA-G protein isoforms have been described, which have different immunosuppressive potentials. HLA-F has three transcript variants, resulting in three different protein isoforms. The aim of this study was to evaluate the prognostic and predictive value of HLA-G and HLA-F protein isoform expression patterns in patients with breast cancer. Core biopsies were taken at diagnosis in patients with HER2+ (n = 28), luminal B-like (n = 49) and triple-negative (n = 38) breast cancers who received neoadjuvant chemotherapy. Expression levels of HLA-F and -G were correlated with the pathological complete response (pCR). Protein expression was determined by Western blot analysis, using two antibodies for each HLA, specific for different isoforms. The protein expression of HLA isoforms did not significantly differ between breast cancer subtypes. However, some initial indications were found for an association between the soluble HLA-G6 protein isoform and pCR in HER2+ breast cancer. The study provides preliminary evidence for the evaluation of HLA-G isoform expression, in particular HLA-G6, as a possible new marker for pCR in HER2+ breast cancer.
Collapse
Affiliation(s)
- Franziska M Wuerfel
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Hanna Huebner
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Lothar Häberle
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Paul Gass
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Alexander Hein
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Sebastian M Jud
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Carolin C Hack
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Marius Wunderle
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Rüdiger Schulz-Wendtland
- Institute of Diagnostic Radiology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Ramona Erber
- Institute of Pathology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Arndt Hartmann
- Institute of Pathology, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Arif B Ekici
- Institute of Human Genetics, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - Matthias W Beckmann
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Peter A Fasching
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany
| | - Matthias Ruebner
- Department of Gynaecology and Obstetrics, Erlangen University Hospital, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander University of Erlangen-Nuremberg (FAU), Universitätsstrasse 21-23, 91054, Erlangen, Germany.
| |
Collapse
|
19
|
Toni Ho GG, Heinen F, Stieglitz F, Blasczyk R, Bade-Döding C. Dynamic Interaction between Immune Escape Mechanism and HLA-Ib Regulation. Immunogenetics 2019. [DOI: 10.5772/intechopen.80731] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
20
|
Lin A, Yan WH. The Emerging Roles of Human Leukocyte Antigen-F in Immune Modulation and Viral Infection. Front Immunol 2019; 10:964. [PMID: 31134067 PMCID: PMC6524545 DOI: 10.3389/fimmu.2019.00964] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 04/15/2019] [Indexed: 12/29/2022] Open
Abstract
Human leukocyte antigens (HLAs) play various critical roles in both innate and adaptive immunity through processes such as presenting antigens to T cells and serving as ligands for receptors expressed on natural killer (NK) cells. Among the HLA class I family, the clinical significance and biological function of HLA-F have been the least investigated and have remained elusive for a long period of time. Previous studies have revealed that HLA-F expression might be involved in various physiological and pathological processes, such as pregnancy, viral infection, cancer, transplantation, and autoimmune diseases. However, recent data have shown that, akin to other HLA family members, HLA-F molecules can interact with both activating and inhibitory receptors on immune cells, such as NK cells, and can present a diverse panel of peptides. These important findings pave new avenues for investigations regarding the functions of HLA-F as an important immune regulatory molecule. In the present review, we summarize the studies on the role of HLA-F in immune modulation, with a special emphasis placed on the roles of HLA-F and KIR3DS1 interactions in viral infection.
Collapse
Affiliation(s)
- Aifen Lin
- Biological Resource Center, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, China
| | - Wei-Hua Yan
- Medical Research Center, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, China
| |
Collapse
|
21
|
HLAIb worldwide genetic diversity: New HLA-H alleles and haplotype structure description. Mol Immunol 2019; 112:40-50. [PMID: 31078115 DOI: 10.1016/j.molimm.2019.04.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/09/2019] [Accepted: 04/23/2019] [Indexed: 01/01/2023]
Abstract
The classical HLA class I genes (HLA Ia) were extensively studied because of their implication in clinical fields and anthropology. Less is known about worldwide genetic diversity and linkage disequilibrium for non-classical HLA class I genes (HLA Ib) and HLA pseudogenes. Notably, HLA-H, which is deleted in a fraction of the population, remains scarcely explored. The aims of this study were 1/ to get further insight into HLA-H genetic diversity and into how this variability potentially affects its expression and 2/ to define HLA Ib worldwide allelic diversity and linkage. Exome sequence data from the 1000 Genomes Project were used to define second field HLA-A, -E, -F, -G and -H typing using PolyPheMe software. Allelic and two-loci haplotype frequencies were estimated using Gene[Rate] software both at worldwide and continental levels. Eleven novel HLA-H alleles identified in exome data were validated by NGS performed on 25 genomic DNA samples from the same cohort. Phylogenetic analysis and frequency distribution of HLA-H alleles revealed three clades, each predominantly represented in Admixed American, European and East Asian populations, African populations and South Asian populations. Among these eleven novel alleles, two potentially encode complete transmembrane HLA proteins. We confirm the high LD between HLA-H and -A, and between HLA-H and -G, and show the three genes have distinct worldwide allelic distribution. Conversely, HLA-E and HLA-F both showed little LD, displayed restricted allelic diversity and practically no difference in their distribution across the planet. Our work thus reveals an unexpectedly high HLA-H genetic diversity, with alleles highly represented in Asia possibly encoding a functional HLA protein. Functional implication of these results remains to be explored, both in physiological and pathological contexts.
Collapse
|
22
|
Buttura RV, Ramalho J, Lima TH, Donadi EA, Veiga-Castelli LC, Mendes-Junior CT, Castelli EC. HLA-F displays highly divergent and frequent haplotype lineages associated with different mRNA expression levels. Hum Immunol 2019; 80:112-119. [DOI: 10.1016/j.humimm.2018.10.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 10/10/2018] [Accepted: 10/26/2018] [Indexed: 12/30/2022]
|
23
|
Lunemann S, Schöbel A, Kah J, Fittje P, Hölzemer A, Langeneckert AE, Hess LU, Poch T, Martrus G, Garcia-Beltran WF, Körner C, Ziegler AE, Richert L, Oldhafer KJ, Schulze Zur Wiesch J, Schramm C, Dandri M, Herker E, Altfeld M. Interactions Between KIR3DS1 and HLA-F Activate Natural Killer Cells to Control HCV Replication in Cell Culture. Gastroenterology 2018; 155:1366-1371.e3. [PMID: 30031767 DOI: 10.1053/j.gastro.2018.07.019] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 07/10/2018] [Accepted: 07/14/2018] [Indexed: 12/02/2022]
Abstract
Killer-cell immunoglobulin-like receptors (KIRs) are transmembrane glycoproteins expressed by natural killer (NK) cells. Binding of KIR3DS1 to its recently discovered ligand, HLA-F, activates NK cells and has been associated with resolution of hepatitis C virus (HCV) infection. We investigated the mechanisms by which KIR3DS1 contributes to the antiviral immune response. Using cell culture systems, mice with humanized livers, and primary liver tissue from HCV-infected individuals, we found that the KIR3DS1 ligand HLA-F is up-regulated on HCV-infected cells, and that interactions between KIR3DS1 and HLA-F contribute to NK cell-mediated control of HCV. Strategies to promote interaction between KIR3DS1 and HLA-F might be developed for treatment of infectious diseases and cancer.
Collapse
Affiliation(s)
- Sebastian Lunemann
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Anja Schöbel
- Junior Research Group HCV Replication, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Janine Kah
- I. Department of Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Pia Fittje
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Angelique Hölzemer
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany; I. Department of Medicine, Section Infectious Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; German Center for Infection Research (DZIF), Partner site Hamburg-Lübeck-Borstel-Riems, Hamburg, Germany
| | - Annika E Langeneckert
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Leonard U Hess
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Tobias Poch
- I. Department of Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gloria Martrus
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany; German Center for Infection Research (DZIF), Partner site Hamburg-Lübeck-Borstel-Riems, Hamburg, Germany
| | | | - Christian Körner
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Annerose E Ziegler
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Laura Richert
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany; INSERM U1219, INRIA SISTM, Bordeaux University, Bordeaux, France
| | - Karl J Oldhafer
- Department of General and Abdominal Surgery, Asklepios Hospital Barmbek, Semmelweis University of Medicine, Asklepios Campus, Hamburg, Germany
| | - Julian Schulze Zur Wiesch
- I. Department of Medicine, Section Infectious Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christoph Schramm
- I. Department of Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Maura Dandri
- I. Department of Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Eva Herker
- Junior Research Group HCV Replication, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Marcus Altfeld
- Department of Virus Immunology, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany; German Center for Infection Research (DZIF), Partner site Hamburg-Lübeck-Borstel-Riems, Hamburg, Germany; Institute for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| |
Collapse
|
24
|
Neerincx A, Boyle LH. Preferential interaction of MHC class I with TAPBPR in the absence of glycosylation. Mol Immunol 2018; 113:58-66. [PMID: 30077416 PMCID: PMC6859791 DOI: 10.1016/j.molimm.2018.06.269] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 04/23/2018] [Accepted: 06/14/2018] [Indexed: 11/17/2022]
Abstract
We recently discovered that TAPBPR promotes reglucosylation of the N-linked glycan on MHC class I molecules, a modification that restores their recognition by calreticulin and reincorporation into the peptide-loading complex. We wondered whether TAPBPR displayed some degree of glycan specificity, as is known to be the case for tapasin via its interaction with calreticulin & ERp57, or whether its interaction with MHC class I was glycan independent. Here, we explored this by comparing the ability of TAPBPR to bind to MHC class I containing either an intact or disrupted NxS/T glycosylation consensus sequence. In contrast to tapasin, TAPBPR bound strongly to MHC class I molecules that lacked N-linked glycosylation, suggesting that the TAPBPR:MHC class I interaction is glycan independent. Furthermore, we found that glycosylated HLA-A2 preferentially interacts with tapasin rather than TAPBPR, possibly explaining, in part, why MHC class I molecules bind efficiently to tapasin in the face of an alternative chaperone. The distinction in glycan specificity between the two peptide editors suggests that TAPBPR may bind to MHC class I molecules that are associated with a broader diversity of oligosaccharides attached compared with tapasin. This may explain, to some extent, the ability of TAPBPR to interact with MHC class I molecules outside of the ER.
Collapse
Affiliation(s)
- Andreas Neerincx
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QP, UK
| | - Louise H Boyle
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QP, UK.
| |
Collapse
|
25
|
Santos MR, Couto AR, Foroni I, Bettencourt BF, Li Z, Meneses R, Wheeler L, Pereira J, Pimentel-Santos F, Fonseca JE, Alves H, Martinho A, Lima M, Brown MA, Bruges-Armas J. Non-classical human leucocyte antigens in ankylosing spondylitis: possible association with HLA-E and HLA-F. RMD Open 2018; 4:e000677. [PMID: 30018800 PMCID: PMC6045739 DOI: 10.1136/rmdopen-2018-000677] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/18/2018] [Accepted: 06/10/2018] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVES Ankylosing spondylitis (AS) is the most prevalent form of spondyloarthritis, with a known genetic association with the HLA-B27 molecule. The aim of this study was to assess the contribution of the HLA-G, HLA-E and HLA-F to AS susceptibility/protection in Portuguese patients with HLA-B27 AS and HLA-B27 unaffected controls. METHODS High-resolution typing of HLA-G, HLA-E and HLA-F was performed in 228 patients with HLA-B27 AS and 244 HLA-B27 unaffected controls. Allelic, genotypic and haplotypic frequencies were compared between cohorts. To replicate the results, single nucleotide polymorphisms (SNPs) in HLA-E and HLA-F genes were typed in Australian cohorts. For further confirmation, a group of European-descent patients with AS and unaffected controls were genotyped for Major Histocompatibility Complex SNPs using the Illumina microarray. RESULTS In the Portuguese population, no significant differences were found in HLA-G. For HLA-E, a significant difference was detected for the genotype HLA-E*01:01:01/01:03:01 (p=0.009; pc=0.009; OR=0.51), with a protection effect. For HLA-F, significant differences were detected in the allele HLA-F*01:01:02 (p=0.0049; pc=0.0098; OR=0.60) and corresponding SNP rs2075682 (p=0.0004; pc=0.0008; OR=0.53), suggesting protection and in the genotype HLA-F*01:01:01/01:03:01 (p=0.011; pc=0.043; OR=2.00), suggesting a susceptibility effect. Three G-E-F haplotypes with significant differences were detected but occur in a very small number of individuals. The only significant differences detected in the replication studies were for HLA-E rs1059510 in the Australians and for HLA-F rs1736924 in the European-descent cohorts. CONCLUSION Our results reveal suggestive AS protective and susceptibility effects from both HLA-E and HLA-F loci, however with population differences. To our knowledge, this is the first study showing association of HLA-F with AS.
Collapse
Affiliation(s)
- Margarida Rodrigues Santos
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Ana Rita Couto
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Iris Foroni
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Bruno Filipe Bettencourt
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Zhixiu Li
- Institute of Health and Biomedical Innovation, Translational Research Institute, Queensland University of Technology, Brisbane, Australia
| | - Raquel Meneses
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | - Lawrie Wheeler
- Institute of Health and Biomedical Innovation, Translational Research Institute, Queensland University of Technology, Brisbane, Australia
| | - Joaquim Pereira
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
| | | | | | - Helena Alves
- Centro de Histocompatibilidade do Norte, Instituto Português do Sangue e da Transplantação, Porto, Portugal
| | - António Martinho
- Centro de Sangue e Transplantação de Coimbra, Instituto Português do Sangue e da Transplantação, Coimbra, Portugal
| | - Manuela Lima
- Faculdade de Ciências e Tecnologia, Universidade dos Açores, Ponta Delgada, Portugal
| | - Matthew A Brown
- Institute of Health and Biomedical Innovation, Translational Research Institute, Queensland University of Technology, Brisbane, Australia
| | - Jácome Bruges-Armas
- Serviço Especializado de Epidemiologia e Biologia Molecular, Hospital de Santo Espirito da Ilha Terceira, EPER, Angra do Heroismo, Portugal
- CEDOC, Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal
| |
Collapse
|
26
|
Crux NB, Elahi S. Human Leukocyte Antigen (HLA) and Immune Regulation: How Do Classical and Non-Classical HLA Alleles Modulate Immune Response to Human Immunodeficiency Virus and Hepatitis C Virus Infections? Front Immunol 2017; 8:832. [PMID: 28769934 PMCID: PMC5513977 DOI: 10.3389/fimmu.2017.00832] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 06/30/2017] [Indexed: 12/13/2022] Open
Abstract
The genetic factors associated with susceptibility or resistance to viral infections are likely to involve a sophisticated array of immune response. These genetic elements may modulate other biological factors that account for significant influence on the gene expression and/or protein function in the host. Among them, the role of the major histocompatibility complex in viral pathogenesis in particular human immunodeficiency virus (HIV) and hepatitis C virus (HCV), is very well documented. We, recently, added a novel insight into the field by identifying the molecular mechanism associated with the protective role of human leukocyte antigen (HLA)-B27/B57 CD8+ T cells in the context of HIV-1 infection and why these alleles act as a double-edged sword protecting against viral infections but predisposing the host to autoimmune diseases. The focus of this review will be reexamining the role of classical and non-classical HLA alleles, including class Ia (HLA-A, -B, -C), class Ib (HLA-E, -F, -G, -H), and class II (HLA-DR, -DQ, -DM, and -DP) in immune regulation and viral pathogenesis (e.g., HIV and HCV). To our knowledge, this is the very first review of its kind to comprehensively analyze the role of these molecules in immune regulation associated with chronic viral infections.
Collapse
Affiliation(s)
- Nicole B Crux
- Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta, Edmonton, AB, Canada.,Faculty of Medicine and Dentistry, Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada
| | - Shokrollah Elahi
- Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta, Edmonton, AB, Canada.,Faculty of Medicine and Dentistry, Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
27
|
Parashar S, Mukhopadhyay A. GTPase Sar1 regulates the trafficking and secretion of the virulence factor gp63 in Leishmania. J Biol Chem 2017; 292:12111-12125. [PMID: 28576830 DOI: 10.1074/jbc.m117.784033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/30/2017] [Indexed: 12/30/2022] Open
Abstract
Metalloprotease gp63 (Leishmania donovani gp63 (Ldgp63)) is a critical virulence factor secreted by Leishmania However, how newly synthesized Ldgp63 exits the endoplasmic reticulum (ER) and is secreted by this parasite is unknown. Here, we cloned, expressed, and characterized the GTPase LdSar1 and other COPII components like LdSec23, LdSec24, LdSec13, and LdSec31 from Leishmania to understand their role in ER exit of Ldgp63. Using dominant-positive (LdSar1:H74L) and dominant-negative (LdSar1:T34N) mutants of LdSar1, we found that GTP-bound LdSar1 specifically binds to LdSec23, which binds, in turn, with LdSec24(1-702) to form a prebudding complex. Moreover, LdSec13 specifically interacted with His6-LdSec31(1-603), and LdSec31 bound the prebudding complex via LdSec23. Interestingly, dileucine 594/595 and valine 597 residues present in the Ldgp63 C-terminal domain were critical for binding with LdSec24(703-966), and GFP-Ldgp63L594A/L595A or GFP-Ldgp63V597S mutants failed to exit from the ER. Moreover, Ldgp63-containing COPII vesicle budding from the ER was inhibited by LdSar1:T34N in an in vitro budding assay, indicating that GTP-bound LdSar1 is required for budding of Ldgp63-containing COPII vesicles. To directly demonstrate the function of LdSar1 in Ldgp63 trafficking, we coexpressed RFP-Ldgp63 along with LdSar1:WT-GFP or LdSar1:T34N-GFP and found that LdSar1:T34N overexpression blocks Ldgp63 trafficking and secretion in Leishmania Finally, we noted significantly compromised survival of LdSar1:T34N-GFP-overexpressing transgenic parasites in macrophages. Taken together, these results indicated that Ldgp63 interacts with the COPII complex via LdSec24 for Ldgp63 ER exit and subsequent secretion.
Collapse
Affiliation(s)
- Smriti Parashar
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | | |
Collapse
|
28
|
Carlini F, Ferreira V, Buhler S, Tous A, Eliaou JF, René C, Chiaroni J, Picard C, Di Cristofaro J. Association of HLA-A and Non-Classical HLA Class I Alleles. PLoS One 2016; 11:e0163570. [PMID: 27701438 PMCID: PMC5049754 DOI: 10.1371/journal.pone.0163570] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 09/11/2016] [Indexed: 01/21/2023] Open
Abstract
The HLA-A locus is surrounded by HLA class Ib genes: HLA-E, HLA-H, HLA-G and HLA-F. HLA class Ib molecules are involved in immuno-modulation with a central role for HLA-G and HLA-E, an emerging role for HLA-F and a yet unknown function for HLA-H. Thus, the principal objective of this study was to describe the main allelic associations between HLA-A and HLA-H, -G, -F and -E. Therefore, HLA-A, -E, -G, -H and -F coding polymorphisms, as well as HLA-G UnTranslated Region haplotypes (referred to as HLA-G UTRs), were explored in 191 voluntary blood donors. Allelic frequencies, Global Linkage Disequilibrium (GLD), Linkage Disequilibrium (LD) for specific pairs of alleles and two-loci haplotype frequencies were estimated. We showed that HLA-A, HLA-H, HLA-F, HLA-G and HLA-G UTRs were all in highly significant pairwise GLD, in contrast to HLA-E. Moreover, HLA-A displayed restricted associations with HLA-G UTR and HLA-H. We also confirmed several associations that were previously found to have a negative impact on transplantation outcome. In summary, our results suggest complex functional and clinical implications of the HLA-A genetic region.
Collapse
Affiliation(s)
- Federico Carlini
- Etablissement Français du Sang Alpes Méditerranée, Marseille, France
- Aix Marseille Univ, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
| | - Virginia Ferreira
- Aix Marseille Univ, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
| | - Stéphane Buhler
- Laboratory of Anthropology, Genetics and Peopling history (AGP), Department of Genetics and Evolution–Anthropology Unit, University of Geneva, Geneva, Switzerland
- Transplantation Immunology Unit and National Reference Laboratory for Histocompatibility, Department of Genetic and Laboratory Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Audrey Tous
- Etablissement Français du Sang Alpes Méditerranée, Marseille, France
- Aix Marseille Univ, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
| | - Jean-François Eliaou
- Department of Immunology, CHRU de Montpellier, University Hospital Saint-Eloi, Montpellier, France
- Faculté de Médecine, University of Montpellier 1, Montpellier, France
| | - Céline René
- Department of Immunology, CHRU de Montpellier, University Hospital Saint-Eloi, Montpellier, France
- Faculté de Médecine, University of Montpellier 1, Montpellier, France
| | - Jacques Chiaroni
- Etablissement Français du Sang Alpes Méditerranée, Marseille, France
- Aix Marseille Univ, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
| | - Christophe Picard
- Etablissement Français du Sang Alpes Méditerranée, Marseille, France
- Aix Marseille Univ, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
| | - Julie Di Cristofaro
- Etablissement Français du Sang Alpes Méditerranée, Marseille, France
- Aix Marseille Univ, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
- * E-mail:
| |
Collapse
|
29
|
Garcia-Beltran WF, Hölzemer A, Martrus G, Chung AW, Pacheco Y, Simoneau CR, Rucevic M, Lamothe-Molina PA, Pertel T, Kim TE, Dugan H, Alter G, Dechanet-Merville J, Jost S, Carrington M, Altfeld M. Open conformers of HLA-F are high-affinity ligands of the activating NK-cell receptor KIR3DS1. Nat Immunol 2016; 17:1067-74. [PMID: 27455421 PMCID: PMC4992421 DOI: 10.1038/ni.3513] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 06/13/2016] [Indexed: 12/23/2022]
Abstract
The activating natural killer (NK)-cell receptor KIR3DS1 has been linked to the outcome of various human diseases, including delayed progression of disease caused by human immunodeficiency virus type 1 (HIV-1), yet a ligand that would account for its biological effects has remained unknown. We screened 100 HLA class I proteins and found that KIR3DS1 bound to HLA-F, a result we confirmed biochemically and functionally. Primary human KIR3DS1(+) NK cells degranulated and produced antiviral cytokines after encountering HLA-F and inhibited HIV-1 replication in vitro. Activation of CD4(+) T cells triggered the transcription and surface expression of HLA-F mRNA and HLA-F protein, respectively, and induced binding of KIR3DS1. HIV-1 infection further increased the transcription of HLA-F mRNA but decreased the binding of KIR3DS1, indicative of a mechanism for evading recognition by KIR3DS1(+) NK cells. Thus, we have established HLA-F as a ligand of KIR3DS1 and have demonstrated cell-context-dependent expression of HLA-F that might explain the widespread influence of KIR3DS1 in human disease.
Collapse
Affiliation(s)
| | - Angelique Hölzemer
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
- Heinrich-Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
- First Department of Internal Medicine, University Medical Centre Eppendorf, Hamburg, Germany
| | - Gloria Martrus
- Heinrich-Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Amy W. Chung
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
| | - Yovana Pacheco
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
- Departamento de Matemáticas, Facultad de Ciencias, Universidad Nuestra Señora del Rosario, Bogotá, Colombia
| | | | | | | | - Thomas Pertel
- Center for Neurologic Diseases, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Tae-Eun Kim
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
| | - Haley Dugan
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
| | - Galit Alter
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
| | | | | | - Mary Carrington
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
- Cancer and Inflammation Program, Laboratory of Experimental Immunology, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, Frederick, MD
| | - Marcus Altfeld
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA
- Heinrich-Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| |
Collapse
|
30
|
Hermann C, Trowsdale J, Boyle LH. TAPBPR: a new player in the MHC class I presentation pathway. ACTA ACUST UNITED AC 2015; 85:155-66. [PMID: 25720504 DOI: 10.1111/tan.12538] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
In order to provide specificity for T cell responses against pathogens and tumours, major histocompatibility complex (MHC) class I molecules present high-affinity peptides at the cell surface to T cells. A key player for peptide loading is the MHC class I-dedicated chaperone tapasin. Recently we discovered a second MHC class I-dedicated chaperone, the tapasin-related protein TAPBPR. Here, we review the major steps in the MHC class I pathway and the TAPBPR data. We discuss the potential function of TAPBPR in the MHC class I pathway and the involvement of this previously uncharacterised protein in human health and disease.
Collapse
Affiliation(s)
- C Hermann
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, UK
| | | | | |
Collapse
|
31
|
Didonna A, Isobe N, Caillier SJ, Li KH, Burlingame AL, Hauser SL, Baranzini SE, Patsopoulos NA, Oksenberg JR. A non-synonymous single-nucleotide polymorphism associated with multiple sclerosis risk affects the EVI5 interactome. Hum Mol Genet 2015; 24:7151-8. [PMID: 26433934 DOI: 10.1093/hmg/ddv412] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 09/28/2015] [Indexed: 12/31/2022] Open
Abstract
Despite recent progress in the characterization of genetic loci associated with multiple sclerosis (MS) risk, the ubiquitous linkage disequilibrium operating across the genome has stalled efforts to distinguish causative variants from proxy single-nucleotide polymorphisms (SNPs). Here, we have identified through fine mapping and meta-analysis EVI5 as the most plausible disease risk gene within the 1p22.1 locus. We further show that an exonic SNP associated with risk induces changes in superficial hydrophobicity patterns of the coiled-coil domain of EVI5, which, in turns, affects the EVI5 interactome. Immunoprecipitation of wild-type and mutated EVI5 followed by mass spectrometry generated a roster of disease-specific interactors functionally linked to lipid metabolism. Among the exclusive binding partners of the risk variant, we describe the novel interaction with sphingosine 1-phosphate lyase (SGPL1)-a key enzyme for the creation of the sphingosine-1 phosphate gradient, which is relevant to the pathogenic process and therapeutic management of MS.
Collapse
Affiliation(s)
| | | | | | - Kathy H Li
- Department of Pharmaceutical Chemistry, University of California at San Francisco, San Francisco, CA 94158, USA
| | - Alma L Burlingame
- Department of Pharmaceutical Chemistry, University of California at San Francisco, San Francisco, CA 94158, USA
| | | | | | - Nikolaos A Patsopoulos
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA, Program in Translational NeuroPsychiatric Genomics, Department of Neurology, Institute for the Neurosciences and Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02142, USA
| | | |
Collapse
|
32
|
Goyos A, Guethlein LA, Horowitz A, Hilton HG, Gleimer M, Brodsky FM, Parham P. A Distinctive Cytoplasmic Tail Contributes to Low Surface Expression and Intracellular Retention of the Patr-AL MHC Class I Molecule. THE JOURNAL OF IMMUNOLOGY 2015; 195:3725-36. [PMID: 26371256 DOI: 10.4049/jimmunol.1500397] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 08/07/2015] [Indexed: 01/24/2023]
Abstract
Chimpanzees have orthologs of the six fixed, functional human MHC class I genes. But, in addition, the chimpanzee has a seventh functional gene, Patr-AL, which is not polymorphic but contributes substantially to population diversity by its presence on only 50% of MHC haplotypes. The ancestral AL gene emerged long before the separation of human and chimpanzee ancestors and then subsequently and specifically lost function during human evolution, but was maintained in chimpanzees. Patr-AL is an alloantigen that participates in negative and positive selection of the T cell repertoire. The three-dimensional structure and the peptide-binding repertoire of Patr-AL and HLA-A*02 are surprisingly similar. In contrast, the expression of these two molecules is very different, as shown using specific mAbs and polyclonal Abs made against Patr-AL. Peripheral blood cells and B cell lines express low levels of Patr-AL at the cell surface. Higher levels are seen for 221-cell transfectants expressing Patr-AL, but in these cells a large majority of Patr-AL molecules are retained in the early compartments of the secretory pathway: mainly the endoplasmic reticulum, but also cis-Golgi. Replacing the cytoplasmic tail of Patr-AL with that of HLA-A*02 increased the cell-surface expression of Patr-AL substantially. Four substitutions distinguish the Patr-AL and HLA-A*02 cytoplasmic tails. Systematic mutagenesis showed that each substitution contributes changes in cell-surface expression. The combination of residues present in Patr-AL appears unique, but each individual residue is present in other primate MHC class I molecules, notably MHC-E, the most ancient of the functional human MHC class I molecules.
Collapse
Affiliation(s)
- Ana Goyos
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; Stanford Immunology, Stanford University School of Medicine, Stanford, CA 94305
| | - Lisbeth A Guethlein
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305
| | - Amir Horowitz
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; Stanford Immunology, Stanford University School of Medicine, Stanford, CA 94305
| | - Hugo G Hilton
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305
| | - Michael Gleimer
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; Stanford Immunology, Stanford University School of Medicine, Stanford, CA 94305
| | - Frances M Brodsky
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA 94143; Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, CA 94143; and Department of Microbiology and Immunology, University of California San Francisco, San Francisco, CA 94143
| | - Peter Parham
- Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305; Stanford Immunology, Stanford University School of Medicine, Stanford, CA 94305;
| |
Collapse
|
33
|
Manvailer LFS, Wowk PF, Mattar SB, da Siva JS, da Graça Bicalho M, Roxo VMMS. HLA-F polymorphisms in a Euro-Brazilian population from Southern Brazil. ACTA ACUST UNITED AC 2015; 84:554-9. [PMID: 25413105 DOI: 10.1111/tan.12444] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 08/06/2014] [Accepted: 08/13/2014] [Indexed: 11/28/2022]
Abstract
HLA-F is a non-classical major histocompatibility complex (MHC) gene. It codes class Ib MHC molecules with restricted distribution and less nucleotide variations than MHC class Ia genes. Of the 22 alleles registered on the IMGT database only four alleles encode for proteins that differ in their primary structure. To estimate genotype and allele frequencies, this study targeted on known protein coding regions of the HLA-F gene. Genotyping was performed by Sequence Base Typing (SBT). The sample was composed by 199-unrelated bone marrow donors from the Brazilian Bone Marrow Donor Registry (REDOME), Euro-Brazilians, from Southern Brazil. About 1673 bp were analyzed. The most frequent allele was HLA-F*01:01 (87.19%), followed by HLA-F*01:03 (12.31%), HLA-F*01:02 (0.25%) and HLA-F*01:04 (0.25%). Significant linkage disequilibrium (LD) was verified between HLA-F and HLA classes I and II alleles. This is the first study regarding HLA-F polymorphisms in a Euro-Brazilian population contributing to the Southern Brazilian genetic characterization.
Collapse
Affiliation(s)
- L F S Manvailer
- Laboratory of Immunogenetics and Histocompatibility, Genetics Department, Universidade Federal do Paraná, Curitiba, Brazil
| | | | | | | | | | | |
Collapse
|
34
|
Transport and quality control of MHC class I molecules in the early secretory pathway. Curr Opin Immunol 2015; 34:83-90. [PMID: 25771183 DOI: 10.1016/j.coi.2015.02.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 02/21/2015] [Accepted: 02/24/2015] [Indexed: 12/26/2022]
Abstract
Folding and peptide binding of major histocompatibility complex (MHC) class I molecules have been thoroughly researched, but the mechanistic connection between these biochemical events and the progress of class I through the early secretory pathway is much less well understood. This review focuses on the question how the partially assembled forms of class I (which lack high-affinity peptide and/or the light chain beta-2 microglobulin) are retained inside the cell. Such investigations offer researchers exciting chances to understand the connections between class I structure, conformational dynamics, peptide binding kinetics and thermodynamics, intracellular transport, and antigen presentation.
Collapse
|
35
|
Xu Y, Han H, Zhang F, Lv S, Li Z, Fang Z. Lesion human leukocyte antigen-F expression is associated with a poor prognosis in patients with hepatocellular carcinoma. Oncol Lett 2014; 9:300-304. [PMID: 25435979 PMCID: PMC4246689 DOI: 10.3892/ol.2014.2686] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 09/30/2014] [Indexed: 01/06/2023] Open
Abstract
Human leukocyte antigen (HLA)-F, a non-classical HLA-class I molecule, has attracted attention as an important immunosuppressive molecule in recent years, although the clinical relevance of HLA-F expression in cancer patients remains unclear. In the present study, HLA-F expression in 90 primary hepatocellular carcinoma (HCC) lesions and 55 corresponding adjacent normal liver tissues was analyzed by immunohistochemistry, and the associations between HLA-F expression and clinicopathological parameters and patient survival times were analyzed. Positive HLA-F expression was observed in 47.8% (43/90) of the HCC lesions and in 10.9% (6/55) of the normal liver tissues. HLA-F expression in HCC lesions was significantly correlated with patient gender (P=0.02), and venous or lymphatic invasion (P=0.02). Patients who were HLA-F-positive had worse survival times than those who were HLA-F-negative (P=0.04). The mean overall survival times for HLA-F-negative and -positive patients were 44.2 months [95% confidence interval (CI), 37.7-50.7] and 33.0 months (95% CI, 25.1-40.8), respectively. Multivariate analysis revealed that HLA-F was an independent prognostic factor for HCC patients with a hazard ratio of 2.1 (95% CI, 1.0-4.4). In conclusion, the present study demonstrated that HLA-F expression was associated with poor survival in HCC patients, and is correlated with tumor cell invasion and metastasis.
Collapse
Affiliation(s)
- Yongfu Xu
- Department of Hepatobiliary Surgery, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, Zhejiang 317000, P.R. China
| | - Haixiong Han
- Department of Hepatobiliary Surgery, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, Zhejiang 317000, P.R. China
| | - Fabiao Zhang
- Department of Hepatobiliary Surgery, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, Zhejiang 317000, P.R. China
| | - Shangdong Lv
- Department of Hepatobiliary Surgery, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, Zhejiang 317000, P.R. China
| | - Zhengyu Li
- Department of Hepatobiliary Surgery, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, Zhejiang 317000, P.R. China
| | - Zheping Fang
- Department of Hepatobiliary Surgery, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Linhai, Zhejiang 317000, P.R. China
| |
Collapse
|
36
|
Kumar G, Date OS, Kim KS, Manjunath R. Infection of human amniotic and endothelial cells by Japanese encephalitis virus: Increased expression of HLA-F. Virology 2014; 471-473:29-37. [PMID: 25461528 DOI: 10.1016/j.virol.2014.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/05/2014] [Accepted: 09/26/2014] [Indexed: 10/24/2022]
Abstract
Productive infection of human amniotic and endothelial cell lines with Japanese encephalitis virus (JEV) was established leading to the induction of NFκB and HLA-F, a non-classical MHC molecule. Induction of the HLA-F gene and protein in JEV-infected cells was shown to be NFκB dependent since it was blocked by inhibitors of NFκB activation. ShRNA targeting lentivirus-mediated stable knockdown of the p65 subunit of NFκB inhibited JEV-mediated induction of HLA-F both in the amniotic cell line, AV-3 as well as the human brain microendothelial cell line, HBMEC. The induction of HLA-F by treatment of AV-3 with TNF-α was also inhibited by ShRNA mediated knockdown of NFκB. TNF-α treatment of HEK293T cells that were transfected with reporter plasmids under the control of HLA-F enhancer A elements resulted in significant transactivation of the luciferase reporter gene. NFκB-mediated induction of HLA-F following JEV infection and TNF-α exposure is being suggested for the first time.
Collapse
Affiliation(s)
- Gaurav Kumar
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India.
| | - Onkar Sanjay Date
- Department of Biochemistry, Indian Institute of Science, Bangalore 560012, India.
| | - Kwang Sik Kim
- Department of pediatric infectious diseases, John Hopkins university school of medicine, Baltimore, MD 21287, USA.
| | | |
Collapse
|
37
|
Hermann C, Strittmatter LM, Deane JE, Boyle LH. The binding of TAPBPR and Tapasin to MHC class I is mutually exclusive. THE JOURNAL OF IMMUNOLOGY 2013; 191:5743-50. [PMID: 24163410 DOI: 10.4049/jimmunol.1300929] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The loading of peptide Ags onto MHC class I molecules is a highly controlled process in which the MHC class I-dedicated chaperone tapasin is a key player. We recently identified a tapasin-related molecule, TAPBPR, as an additional component in the MHC class I Ag-presentation pathway. In this study, we show that the amino acid residues important for tapasin to interact with MHC class I are highly conserved on TAPBPR. We identify specific residues in the N-terminal and C-terminal domains of TAPBPR involved in associating with MHC class I. Furthermore, we demonstrate that residues on MHC class I crucial for its association with tapasin, such as T134, are also essential for its interaction with TAPBPR. Taken together, the data indicate that TAPBPR and tapasin bind in a similar orientation to the same face of MHC class I. In the absence of tapasin, the association of MHC class I with TAPBPR is increased. However, in the absence of TAPBPR, the interaction between MHC class I and tapasin does not increase. In light of our findings, previous data determining the function of tapasin in the MHC class I Ag-processing and presentation pathway must be re-evaluated.
Collapse
Affiliation(s)
- Clemens Hermann
- Department of Pathology, Cambridge Institute of Medical Research, University of Cambridge, Cambridge CB2 0XY, United Kingdom
| | | | | | | |
Collapse
|
38
|
Kochan G, Escors D, Breckpot K, Guerrero-Setas D. Role of non-classical MHC class I molecules in cancer immunosuppression. Oncoimmunology 2013; 2:e26491. [PMID: 24482746 PMCID: PMC3894240 DOI: 10.4161/onci.26491] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 09/10/2013] [Accepted: 09/14/2013] [Indexed: 01/14/2023] Open
Abstract
Growing neoplasms employ various mechanisms to evade immunosurveillance. The expression of non-classical MHC class I molecules by both immune and malignant cells in the tumor microenvironment constitute of the strategies used by tumors to circumvent the cytotoxic activity of effector cells of the immune system. The overexpression of HLA-G, -E, and -F is a common finding across a variety of malignancies. However, while the presence of HLA-G and HLA-E has been recently correlated with poor clinical outcome, information on the clinicopathological significance of HLA-F is limited. In the present review, we summarize studies on non-classical MHC class I molecules with special emphasis on their role in the modulation of anticancer immune responses.
Collapse
Affiliation(s)
| | - David Escors
- Navarrabiomed-Fundacion Miguel Servet; Navarra, Spain ; Rayne Institute; University College London; London, UK
| | | | | |
Collapse
|
39
|
Marchesi M, Andersson E, Villabona L, Seliger B, Lundqvist A, Kiessling R, Masucci GV. HLA-dependent tumour development: a role for tumour associate macrophages? J Transl Med 2013; 11:247. [PMID: 24093459 PMCID: PMC3856519 DOI: 10.1186/1479-5876-11-247] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 10/01/2013] [Indexed: 02/06/2023] Open
Abstract
HLA abnormalities on tumour cells for immune escape have been widely described. In addition, cellular components of the tumour microenvironment, in particular myeloid derived suppressor cells (MDSC) and alternatively activated M2 tumour-associated macrophages (TAMs), are involved in tumour promotion, progression, angiogenesis and suppression of anti-tumour immunity. However, the role of HLA in these activities is poorly understood. This review details MHC class I characteristics and describes MHC class I receptors functions. This analysis established the basis for a reflection about the crosstalk among the tumour cells, the TAMs and the cells mediating an immune response.The tumour cells and TAMs exploit MHC class I molecules to modulate the surrounding immune cells. HLA A, B, C and G molecules down-regulate the macrophage myeloid activation through the interaction with the inhibitory LILRB receptors. HLA A, B, C are able to engage inhibitory KIR receptors negatively regulating the Natural Killer and cytotoxic T lymphocytes function while HLA-G induces the secretion of pro-angiogenic cytokines and chemokine thanks to an activator KIR receptor expressed by a minority of peripheral NK cells. The open conformer of classical MHC-I is able to interact with LILRA receptors described as being associated to the Th2-type cytokine response, triggering a condition for the M2 like TAM polarization. In addition, HLA-E antigens on the surface of the TAMs bind the inhibitory receptor CD94/NKG2A expressed by a subset of NK cells and activated cytotoxic T lymphocytes protecting from the cytolysis.Furthermore MHC class II expression by antigen presenting cells is finely regulated by factors provided with immunological capacities. Tumour-associated macrophages show an epigenetically controlled down-regulation of the MHC class II expression induced by the decoy receptor DcR3, a member of the TNFR, which further enhances the M2-like polarization. BAT3, a positive regulator of MHC class II expression in normal macrophages, seems to be secreted by TAMs, consequently lacking its intracellular function, it looks like acting as an immunosuppressive factor.In conclusion HLA could cover a considerable role in tumour-development orchestrated by tumour-associated macrophages.
Collapse
Affiliation(s)
- Maddalena Marchesi
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
- Roche Pharma, Basel, Switzerland
| | - Emilia Andersson
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Lisa Villabona
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Barbara Seliger
- Institute of Medical Immunology, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany
| | - Andreas Lundqvist
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Rolf Kiessling
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Giuseppe V Masucci
- Department of Oncology-Pathology, Karolinska Institutet, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| |
Collapse
|
40
|
Lin YC, Chen BM, Lu WC, Su CI, Prijovich ZM, Chung WC, Wu PY, Chen KC, Lee IC, Juan TY, Roffler SR. The B7-1 cytoplasmic tail enhances intracellular transport and mammalian cell surface display of chimeric proteins in the absence of a linear ER export motif. PLoS One 2013; 8:e75084. [PMID: 24073236 PMCID: PMC3779271 DOI: 10.1371/journal.pone.0075084] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 08/12/2013] [Indexed: 11/18/2022] Open
Abstract
Membrane-tethered proteins (mammalian surface display) are increasingly being used for novel therapeutic and biotechnology applications. Maximizing surface expression of chimeric proteins on mammalian cells is important for these applications. We show that the cytoplasmic domain from the B7-1 antigen, a commonly used element for mammalian surface display, can enhance the intracellular transport and surface display of chimeric proteins in a Sar1 and Rab1 dependent fashion. However, mutational, alanine scanning and deletion analysis demonstrate the absence of linear ER export motifs in the B7 cytoplasmic domain. Rather, efficient intracellular transport correlated with the presence of predicted secondary structure in the cytoplasmic tail. Examination of the cytoplasmic domains of 984 human and 782 mouse type I transmembrane proteins revealed that many previously identified ER export motifs are rarely found in the cytoplasmic tail of type I transmembrane proteins. Our results suggest that efficient intracellular transport of B7 chimeric proteins is associated with the structure rather than to the presence of a linear ER export motif in the cytoplasmic tail, and indicate that short (less than ~ 10-20 amino acids) and unstructured cytoplasmic tails should be avoided to express high levels of chimeric proteins on mammalian cells.
Collapse
Affiliation(s)
- Yi-Chieh Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Bing-Mae Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Wei-Cheng Lu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chien-I Su
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | | | - Wen-Chuan Chung
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Pei-Yu Wu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Kai-Chuan Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - I-Chiao Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ting-Yi Juan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Steve R. Roffler
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- * E-mail:
| |
Collapse
|
41
|
Pan FH, Liu XX, Tian W. Characterization of HLA-F polymorphism in four distinct populations in Mainland China. Int J Immunogenet 2013; 40:369-76. [PMID: 23551590 DOI: 10.1111/iji.12047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 12/20/2012] [Accepted: 01/24/2013] [Indexed: 12/12/2022]
Abstract
Currently, there is a lack of information on polymorphism of human leucocyte antigen-F (HLA-F) gene in ethnically diverse human populations. In this study, HLA-F allelic typing was performed for 690 individuals representing two southern Chinese Han populations (Hunan Han and Guangdong Han) and two northern Chinese populations (Inner Mongolia Han and Inner Mongolia Mongol), using polymerase chain reaction-sequence-specific priming (PCR-SSP) and PCR-sequencing methods. Our results showed that (i) HLA-F*01 : 01 predominated in each population with a frequency >0.94 and HLA-F*01 : 03 was relatively more common in the two northern Chinese populations with a frequency of approximately 0.05; (ii) both geographical and ethnical factors are related to HLA-F allelic distribution, as evidenced by the significant difference in HLA-F allelic distribution between the Hunan Han population and the two northern Chinese populations; (iii) significant linkage disequilibrium (LD) was observed for haplotype HLA-A*03-F*01 : 03 in three populations. In most cases, this haplotype extended to HLA-E*01 : 03; and (iv) Ewens-Watterson homozygosity statistic at the HLA-F locus did not depart significantly from expectation in each of the four populations. Our data revealed a low level of HLA-F allelic variation in Chinese populations, suggesting that HLA-F gene may have existed before some of the HLA-A polymorphism and have been evolving under neutrality.
Collapse
Affiliation(s)
- F H Pan
- Immunogenetics Research Group, Department of Immunology, College of Basic Medical Sciences, Central South University, Changsha, China
| | | | | |
Collapse
|
42
|
Zhang JG, Zhang X, Lin A, Yan WH. Lesion HLA-F expression is irrelevant to prognosis for patients with gastric cancer. Hum Immunol 2013; 74:828-32. [PMID: 23542057 DOI: 10.1016/j.humimm.2013.03.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 11/13/2012] [Accepted: 03/19/2013] [Indexed: 01/18/2023]
Abstract
Alteration of human leukocyte antigen (HLA) antigen expression has been supposed to play critical roles in progression of malignancies. However, clinical significance of the non-classical HLA class I antigen HLA-F remains largely unknown. In this study, HLA-F expression in 277 primary gastric cancer (GC) lesions was analyzed by immunohistochemistry. Data revealed that HLA-F expression was observed in 71.1% (197/277) of the GC lesions. Lesion HLA-F expression was unrelated to the clinicoparameters such as gender, age, depth of tumor invasion and disease stage. Survival analysis revealed that HLA-F expression in GC lesion was unrelated to patient prognosis (p=0.190). The mean overall survival time (MOS) for lesion HLA-F negative and positive patients was 11.3 months (95% CI: 9.3-13.3) and 13.9 months (95% CI: 10.5-17.3), respectively. In conclusion, our study provided the evidence that HLA-F expression was unrelated to prognosis for patients with gastric cancer.
Collapse
Affiliation(s)
- Jian-Gang Zhang
- Human Tissue Bank, Taizhou Hospital of Zhejiang Province, Wenzhou Medical College, Linhai, Zhejiang, China
| | | | | | | |
Collapse
|
43
|
Tapasin-related protein TAPBPR is an additional component of the MHC class I presentation pathway. Proc Natl Acad Sci U S A 2013; 110:3465-70. [PMID: 23401559 DOI: 10.1073/pnas.1222342110] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Tapasin is an integral component of the peptide-loading complex (PLC) important for efficient peptide loading onto MHC class I molecules. We investigated the function of the tapasin-related protein, TAPBPR. Like tapasin, TAPBPR is widely expressed, IFN-γ-inducible, and binds to MHC class I coupled with β2-microglobulin in the endoplasmic reticulum. In contrast to tapasin, TAPBPR does not bind ERp57 or calreticulin and is not an integral component of the PLC. β2-microglobulin is essential for the association between TAPBPR and MHC class I. However, the association between TAPBPR and MHC class I occurs in the absence of a functional PLC, suggesting peptide is not required. Expression of TAPBPR decreases the rate of MHC class I maturation through the secretory pathway and prolongs the association of MHC class I on the PLC. The TAPBPR:MHC class I complex trafficks through the Golgi apparatus, demonstrating a function of TAPBPR beyond the endoplasmic reticulum/cis-Golgi. The identification of TAPBPR as an additional component of the MHC class I antigen-presentation pathway demonstrates that mechanisms controlling MHC class I expression remain incompletely understood.
Collapse
|
44
|
Anzalone R, Corrao S, Lo Iacono M, Loria T, Corsello T, Cappello F, Di Stefano A, Giannuzzi P, Zummo G, Farina F, La Rocca G. Isolation and characterization of CD276+/HLA-E+ human subendocardial mesenchymal stem cells from chronic heart failure patients: analysis of differentiative potential and immunomodulatory markers expression. Stem Cells Dev 2013; 22:1-17. [PMID: 23013234 DOI: 10.1089/scd.2012.0402] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are virtually present in all postnatal organs as well as in perinatal tissues. MSCs can be differentiated toward several mature cytotypes and interestingly hold potentially relevant immunomodulatory features. Myocardial infarction results in severe tissue damage, cardiomyocyte loss, and eventually heart failure. Cellular cardiomyoplasty represents a promising approach for myocardial repair. Clinical trials using MSCs are underway for a number of heart diseases, even if their outcomes are hampered by low long-term improvements and the possible presence of complications related to cellular therapy administration. Therefore, elucidating the presence and role of MSCs that reside in the post-infarct human heart should provide essential alternatives for therapy. In the current article we show a novel method to reproducibly isolate and culture MSCs from the subendocardial zone of human left ventricle from patients undergoing heart transplant for post-infarct chronic heart failure (HSE-MSCs, human subendocardial mesenchymal stem cells). By using both immunocytochemistry and reverse transcriptase-polymerase chain reaction (RT-PCR), we demonstrated that these cells do express key MSCs markers and do express heart-specific transcription factors in their undifferentiated state, while lacking strictly cardiomyocyte-specific proteins. Moreover, these cells do express immunomodulatory molecules that should disclose their further potential in immune modulation processes in the post-infarct microenvironment. Another novel datum of potentially relevant interest is the expression of cardiac myosin heavy chain at nucclear level in HSE-MSCs. Standard MSCs trilineage differentiation experiments were also performed. The present paper adds new data on the basic biological features of heart-resident MSCs that populate the organ following myocardial infarction. The use of heart-derived MSCs to promote in-organ repair or as a cellular source for cardiomyoplasty is a fascinating and challenging task, which deserves further research efforts.
Collapse
Affiliation(s)
- Rita Anzalone
- Sezione di Anatomia Umana, Dipartimento di Biomedicina Sperimentale e Neuroscienze Cliniche (BIONEC), Università degli Studi di Palermo, Palermo, Italy
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
HLA-F expression is a prognostic factor in patients with non-small-cell lung cancer. Lung Cancer 2011; 74:504-9. [DOI: 10.1016/j.lungcan.2011.04.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 04/01/2011] [Accepted: 04/05/2011] [Indexed: 11/19/2022]
|
46
|
Smith AJ, Daut J, Schwappach B. Membrane proteins as 14-3-3 clients in functional regulation and intracellular transport. Physiology (Bethesda) 2011; 26:181-91. [PMID: 21670164 DOI: 10.1152/physiol.00042.2010] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
14-3-3 proteins regulate the function and subcellular sorting of membrane proteins. Often, 14-3-3 binding to client proteins requires phosphorylation of the client, but the relevant kinase is unknown in most cases. We summarize current progress in identifying kinases that target membrane proteins with 14-3-3 binding sites and discuss the molecular mechanisms of 14-3-3 action. One of the kinases involved is Akt/PKB, which has recently been shown to activate the 14-3-3-dependent switch in a number of client membrane proteins.
Collapse
Affiliation(s)
- Andrew J Smith
- Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom
| | | | | |
Collapse
|
47
|
Hu R, Lemonnier G, Bourneuf E, Vincent-Naulleau S, Rogel-Gaillard C. Transcription variants of SLA-7, a swine non classical MHC class I gene. BMC Proc 2011; 5 Suppl 4:S10. [PMID: 21645289 PMCID: PMC3108204 DOI: 10.1186/1753-6561-5-s4-s10] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In pig, very little information is available on the non classical class I (Ib) genes of the Major Histocompatibility Complex (MHC) i.e. SLA-6, -7 and -8. Our aim was to focus on the transcription pattern of the SLA-7 gene. RT-PCR experiments were carried out with SLA-7 specific primers targeting either the full coding sequence (CDS) from exon 1 to the 3 prime untranslated region (3UTR) or a partial CDS from exon 4 to the 3UTR. We show that the SLA-7 gene expresses a full length transcript not yet identified that refines annotation of the gene with eight exons instead of seven as initially described from the existing RefSeq RNA. These two RNAs encode molecules that differ in cytoplasmic tail length. In this study, another SLA-7 transcript variant was characterized, which encodes a protein with a shorter alpha 3 domain, as a consequence of a splicing site within exon 4. Surprisingly, a cryptic non canonical GA-AG splicing site is used to generate this transcript variant. An additional SLA-7 variant was also identified in the 3UTR with a splicing site occurring 31 nucleotides downstream to the stop codon. In conclusion, the pig SLA-7 MHC class Ib gene presents a complex transcription pattern with two transcripts encoding various molecules and transcripts that do not alter the CDS and may be subject to post-transcriptional regulation.
Collapse
Affiliation(s)
- Rui Hu
- INRA, UMR de Génétique Animale et Biologie Intégrative, Jouy-en-Josas, France.
| | | | | | | | | |
Collapse
|
48
|
Kusza S, Flori L, Gao Y, Teillaud A, Hu R, Lemonnier G, Bosze Z, Bourneuf E, Vincent-Naulleau S, Rogel-Gaillard C. Transcription specificity of the class Ib genes SLA-6, SLA-7 and SLA-8 of the swine major histocompatibility complex and comparison with class Ia genes. Anim Genet 2011; 42:510-20. [PMID: 21906102 DOI: 10.1111/j.1365-2052.2010.02170.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Our aim was to analyse the transcription levels of the three non-classical class Ib genes SLA-6, SLA-7 and SLA-8 of the swine major histocompatibility complex in various tissues and conditions and to compare them to the transcription levels of classical class Ia genes. Twenty-five adult tissues from two pig breeds, pig renal PK15 cells infected with the Pseudorabies virus, and peripheral blood mononuclear cells (PBMCs) stimulated by lipopolysaccharide or a mixture of phorbol myristate acetate and ionomycin were included in our study. Relative transcription was quantified by quantitative real-time PCR. On average, in adult tissues and PBMCs and compared to SLA-6, the transcription level of SLA-Ia genes was 100-1000 times higher, the level of SLA-8 was 10-20 times higher, and that of SLA-7 was five times higher. Thus, SLA-8 is the most transcribed SLA-Ib gene, followed by the SLA-7 and SLA-6 genes. The highest transcription levels of SLA-Ib transcripts were found in the lymphoid organs, followed by the lung and the digestive tract. The tissue variability of expression levels was widest for the SLA-6 gene, with a 1:32 ratio between the lowest and highest levels in contrast to a 1:12 ratio for the SLA-7 and SLA-8 genes and a 1:16 ratio for the SLA-Ia genes. During PK-15 infection and PBMC stimulation, SLA-Ia and SLA-8 genes were downregulated, whereas SLA-6 and SLA-7 were upregulated, downregulated or not significantly modified. Our overall results confirm the tissue-wide transcription of the three SLA-Ib genes and suggest that they have complementary roles.
Collapse
Affiliation(s)
- S Kusza
- Institute of Animal Science, University Debrecen, Centre for Agricultural and Applied Economic Sciences, 4032 Debrecen, Böszörményi Str.138, Hungary
| | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Dahl M, Hviid TVF. Human leucocyte antigen class Ib molecules in pregnancy success and early pregnancy loss. Hum Reprod Update 2011; 18:92-109. [DOI: 10.1093/humupd/dmr043] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
|
50
|
Lee N, Ishitani A, Geraghty DE. HLA-F is a surface marker on activated lymphocytes. Eur J Immunol 2010; 40:2308-18. [PMID: 20865824 DOI: 10.1002/eji.201040348] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Of the three nonclassical class I antigens expressed in humans, HLA-F has been least characterized with regard to expression or function. In this study, we examined HLA-F expression focusing on lymphoid cells, where our previous work with homologous cell lines had demonstrated surface HLA-F expression. HLA-F protein expression was observed by Western blot analysis in all resting lymphocytes, including B cells, T cells, NK cells, and monocytes, all of which lacked surface expression in the resting state. Upon activation, using a variety of methods to activate different lymphocyte subpopulations, all cell types that expressed HLA-F intracellularly showed an induction of surface HLA-F protein. An examination of peripheral blood from individuals genetically deficient for TAP and tapasin expression demonstrated the same activation expression profiles for HLA-F,but with altered kinetics post-activation. Further analysis of CD41+CD25+1 Treg showed that HLA-F was not upregulated on the major fraction of these cells when they were activated,whereas CD41+CD25- T cells showed strong expression of surface HLA-F when activated under identical conditions. These findings are discussed with regard to possible functions for HLA-F and its potential clinical use as a marker of an activated immune response.
Collapse
Affiliation(s)
- Ni Lee
- The Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle,WA 98109-1024,USA
| | | | | |
Collapse
|