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Różańska-Wróbel J, Migalska M, Urbanowicz A, Grzybek M, Rego ROM, Bajer A, Dwuznik-Szarek D, Alsarraf M, Behnke-Borowczyk J, Behnke JM, Radwan J. Interplay between vertebrate adaptive immunity and bacterial infectivity genes: Bank vole MHC versus Borrelia afzelii OspC. Mol Ecol 2024; 33:e17534. [PMID: 39314079 DOI: 10.1111/mec.17534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 08/12/2024] [Accepted: 09/09/2024] [Indexed: 09/25/2024]
Abstract
Coevolution of parasites with their hosts may lead to balancing selection on genes involved in determining the specificity of host-parasite interactions, but examples of such specific interactions in wild vertebrates are scarce. Here, we investigated whether the polymorphic outer surface protein C (OspC), used by the Lyme disease agent, Borrelia afzelii, to manipulate vertebrate host innate immunity, interacts with polymorphic major histocompatibility genes (MHC), while concurrently eliciting a strong antibody response, in one of its main hosts in Europe, the bank vole. We found signals of balancing selection acting on OspC, resulting in little differentiation in OspC variant frequencies between years. Neither MHC alleles nor their inferred functional groupings (supertypes) significantly predicted the specificity of infection with strains carrying different OspC variants. However, we found that MHC alleles, but not supertypes, significantly predicted the level of IgG antibodies against two common OspC variants among seropositive individuals. Our results thus indicate that MHC alleles differ in their ability to induce antibody responses against specific OspC variants, which may contribute to selection of OspC polymorphism by the vole immune system.
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Affiliation(s)
- Joanna Różańska-Wróbel
- Evolutionary Biology Group, Institute of Environmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
| | - Magdalena Migalska
- Institute of Environmental Sciences, Faculty of Biology, Jagiellonian University, Kraków, Poland
| | - Anna Urbanowicz
- Laboratory of Protein Engineering, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznań, Poland
| | - Maciej Grzybek
- Department of Tropical Parasitology, Institute of Maritime and Tropical Medicine, Medical University of Gdańsk, Gdynia, Poland
| | - Ryan O M Rego
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Anna Bajer
- Department of Eco-Epidemiology of Parasitic Diseases, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Dorota Dwuznik-Szarek
- Department of Eco-Epidemiology of Parasitic Diseases, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Mohammed Alsarraf
- Department of Eco-Epidemiology of Parasitic Diseases, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Jolanta Behnke-Borowczyk
- Department of Forest Phytopathology, Faculty of Forestry, Poznań University of Life Sciences, Poznań, Poland
| | - Jerzy M Behnke
- School of Life Sciences, University of Nottingham, University Park, Nottingham, UK
| | - Jacek Radwan
- Evolutionary Biology Group, Institute of Environmental Biology, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland
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2
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Romero G, Martin B, Gabris B, Salama G. Relaxin suppresses atrial fibrillation, reverses fibrosis and reduces inflammation in aged hearts. Biochem Pharmacol 2024; 227:116407. [PMID: 38969298 DOI: 10.1016/j.bcp.2024.116407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/18/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
Healthy aging results in cardiac structural and electrical remodeling that increase susceptibility to cardiovascular diseases. Relaxin has shown broad cardioprotective effects including anti-fibrotic, anti-arrhythmic and anti-inflammatory outcomes in multiple models. This paper focuses on the cardioprotective effects of Relaxin in a rat model of aging. Sustained atrial or ventricular fibrillation are readily induced in the hearts of aged but not young control animals. Treatment with Relaxin suppressed this arrhythmogenic response by increasing conduction velocity, decreasing fibrosis and promoting substantial cardiac remodeling. Relaxin treatment resulted in a significant increase in the levels of: Nav1.5, Cx43, βcatenin and Wnt1 in rat hearts. In isolated cardiomyocytes, Relaxin increased Nav1.5 expression. These effects were mimicked by CHIR 99021, a pharmacological activator of canonical Wnt signaling, but blocked by the canonical Wnt inhibitor Dickkopf1. Relaxin prevented TGF-β-dependent differentiation of cardiac fibroblasts into myofibroblasts while increasing the expression of Wnt1; the effects of Relaxin on cardiac fibroblast differentiation were blocked by Dickkopf1. RNASeq studies demonstrated reduced expression of pro-inflammatory cytokines and an increase in the expression of α- and β-globin in Relaxin-treated aged males. Relaxin reduces arrhythmogenicity in the hearts of aged rats by reduction of fibrosis and increased conduction velocity. These changes are accompanied by substantial remodeling of the cardiac tissue and appear to be mediated by increased canonical Wnt signaling. Relaxin also exerts significant anti-inflammatory and anti-oxidant effects in the hearts of aged rodents. The mechanisms by which Relaxin increases the expression of Wnt ligands, promotes Wnt signaling and reprograms gene expression remain to be determined.
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Affiliation(s)
- Guillermo Romero
- Departments of Pharmacology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| | - Brian Martin
- Departments of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Beth Gabris
- Departments of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Guy Salama
- Departments of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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3
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Fan C, Xing X, Murphy SJH, Poursine-Laurent J, Schmidt H, Parikh BA, Yoon J, Choudhary MNK, Saligrama N, Piersma SJ, Yokoyama WM, Wang T. Cis-regulatory evolution of the recently expanded Ly49 gene family. Nat Commun 2024; 15:4839. [PMID: 38844462 PMCID: PMC11156856 DOI: 10.1038/s41467-024-48990-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 05/14/2024] [Indexed: 06/09/2024] Open
Abstract
Comparative genomics has revealed the rapid expansion of multiple gene families involved in immunity. Members within each gene family often evolved distinct roles in immunity. However, less is known about the evolution of their epigenome and cis-regulation. Here we systematically profile the epigenome of the recently expanded murine Ly49 gene family that mainly encode either inhibitory or activating surface receptors on natural killer cells. We identify a set of cis-regulatory elements (CREs) for activating Ly49 genes. In addition, we show that in mice, inhibitory and activating Ly49 genes are regulated by two separate sets of proximal CREs, likely resulting from lineage-specific losses of CRE activity. Furthermore, we find that some Ly49 genes are cross-regulated by the CREs of other Ly49 genes, suggesting that the Ly49 family has begun to evolve a concerted cis-regulatory mechanism. Collectively, we demonstrate the different modes of cis-regulatory evolution for a rapidly expanding gene family.
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Affiliation(s)
- Changxu Fan
- Department of Genetics, Washington University School of Medicine, St. Louis, 63110, USA
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, 63110, USA
| | - Xiaoyun Xing
- Department of Genetics, Washington University School of Medicine, St. Louis, 63110, USA
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, 63110, USA
| | - Samuel J H Murphy
- Department of Neurology, Washington University School of Medicine, St. Louis, 63110, USA
- Medical Scientist Training Program, Washington University School of Medicine, St. Louis, 63110, USA
| | - Jennifer Poursine-Laurent
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, 63110, USA
| | - Heather Schmidt
- Department of Genetics, Washington University School of Medicine, St. Louis, 63110, USA
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, 63110, USA
| | - Bijal A Parikh
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, 63110, USA
| | - Jeesang Yoon
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, 63110, USA
| | - Mayank N K Choudhary
- Department of Genetics, Washington University School of Medicine, St. Louis, 63110, USA
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, 63110, USA
| | - Naresha Saligrama
- Department of Neurology, Washington University School of Medicine, St. Louis, 63110, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, 63110, USA
- Bursky Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, 63110, USA
- Hope Center for Neurological Disorders, Washington University School of Medicine, St. Louis, 63110, USA
- Center for Brain Immunology and Glia (BIG), Washington University School of Medicine, St. Louis, 63110, USA
| | - Sytse J Piersma
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, 63110, USA.
- Siteman Cancer Center, Washington University School of Medicine, St. Louis, 63110, USA.
| | - Wayne M Yokoyama
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, 63110, USA.
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, 63110, USA.
| | - Ting Wang
- Department of Genetics, Washington University School of Medicine, St. Louis, 63110, USA.
- The Edison Family Center for Genome Sciences & Systems Biology, Washington University School of Medicine, St. Louis, 63110, USA.
- McDonnell Genome Institute, Washington University School of Medicine, St. Louis, 63110, USA.
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4
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Anderson EM, Anderson SK. Economy of Effort or Sophisticated Programming? The Prevalence of Bidirectional Promoter Complexes in the Human Genome. Genes (Basel) 2024; 15:252. [PMID: 38397241 PMCID: PMC10887517 DOI: 10.3390/genes15020252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 02/16/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
An abundance of antisense promoters in the vicinity of the transcriptional start site of coding genes suggests that they play an important role in gene regulation. The divergent transcription of housekeeping genes by a common central promoter region allows for coordinated regulation of genes in related pathways and is also linked to higher promoter activity. However, closely positioned transcription start sites can also result in competition between overlapping promoter elements and generate a binary switch element. Furthermore, the direct competition resulting from the presence of an antisense promoter immediately downstream of the transcription start site of the gene produces an element that can exist in only one of two stable transcriptional states: sense or antisense. In this review, we summarize analyses of the prevalence of antisense transcription in higher eukaryotes and viruses, with a focus on the antisense promoters competing with the promoters of coding genes. The structures of bidirectional promoters driving the simultaneous expression of housekeeping genes are compared with examples of human bidirectional elements that have been shown to act as switches. Since many bidirectional elements contain a noncoding RNA as the divergent transcript, we describe examples of functional noncoding antisense transcripts that affect the epigenetic landscape and alter the expression of their host gene. Finally, we discuss opportunities for additional research on competing sense/antisense promoters, uncovering their potential role in programming cell differentiation.
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Affiliation(s)
- Erik M Anderson
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
| | - Stephen K Anderson
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA
- Basic Science Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
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Jelinek AL, Futas J, Burger PA, Horin P. Comparative genomics of the Leukocyte Receptor Complex in carnivores. Front Immunol 2023; 14:1197687. [PMID: 37234165 PMCID: PMC10206138 DOI: 10.3389/fimmu.2023.1197687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 04/27/2023] [Indexed: 05/27/2023] Open
Abstract
Background The mammalian Leukocyte Receptor Complex (LRC) chromosomal region may contain gene families for the killer cell immunoglobulin-like receptor (KIR) and/or leukocyte immunoglobulin-like receptor (LILR) collections as well as various framing genes. This complex region is well described in humans, mice, and some domestic animals. Although single KIR genes are known in some Carnivora, their complements of LILR genes remain largely unknown due to obstacles in the assembly of regions of high homology in short-read based genomes. Methods As part of the analysis of felid immunogenomes, this study focuses on the search for LRC genes in reference genomes and the annotation of LILR genes in Felidae. Chromosome-level genomes based on single-molecule long-read sequencing were preferentially sought and compared to representatives of the Carnivora. Results Seven putatively functional LILR genes were found across the Felidae and in the Californian sea lion, four to five genes in Canidae, and four to nine genes in Mustelidae. They form two lineages, as seen in the Bovidae. The ratio of functional genes for activating LILRs to inhibitory LILRs is slightly in favor of inhibitory genes in the Felidae and the Canidae; the reverse is seen in the Californian sea lion. This ratio is even in all of the Mustelidae except the Eurasian otter, which has a predominance of activating LILRs. Various numbers of LILR pseudogenes were identified. Conclusions The structure of the LRC is rather conservative in felids and the other Carnivora studied. The LILR sub-region is conserved within the Felidae and has slight differences in the Canidae, but it has taken various evolutionary paths in the Mustelidae. Overall, the process of pseudogenization of LILR genes seems to be more frequent for activating receptors. Phylogenetic analysis found no direct orthologues across the Carnivora which corroborate the rapid evolution of LILRs seen in mammals.
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Affiliation(s)
- April L. Jelinek
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno (VETUNI), Brno, Czechia
| | - Jan Futas
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno (VETUNI), Brno, Czechia
- Research Group Animal Immunogenomics, Central European Institute of Technology (CEITEC) VETUNI, Brno, Czechia
| | - Pamela A. Burger
- Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna (VETMEDUNI), Vienna, Austria
| | - Petr Horin
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno (VETUNI), Brno, Czechia
- Research Group Animal Immunogenomics, Central European Institute of Technology (CEITEC) VETUNI, Brno, Czechia
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Al Olabi R, Hendy AEA, Alkassab MB, Alnajm K, Elias M, Ibrahim M, Carlyle JR, Makrigiannis AP, Rahim MMA. The inhibitory NKR-P1B receptor regulates NK cell-mediated mammary tumor immunosurveillance in mice. Oncoimmunology 2023; 12:2168233. [PMID: 36704449 PMCID: PMC9872954 DOI: 10.1080/2162402x.2023.2168233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Natural killer (NK) cells are an important component of anti-cancer immunity, and their activity is regulated by an array of activating and inhibitory receptors. In mice, the inhibitory NKR-P1B receptor is expressed in NK cells and recognizes the C-type lectin-related protein-b (Clr-b) ligand. NKR-P1B:Clr-b interactions represent a 'missing-self' recognition system to monitor cellular levels of Clr-b on healthy and diseased cells. Here, we report an important role for NKR-P1B:Clr-b interactions in tumor immunosurveillance in MMTV-PyVT mice, which develop spontaneous mammary tumors. MMTV-PyVT mice on NKR-P1B-deficient genetic background developed mammary tumors earlier than on wild-type (WT) background. A greater proportion of tumor-infiltrating NK cells downregulate expression of the transcription factor Eomesodermin (EOMES) in NKR-P1B-deficient mice compared to WT mice. Tumor-infiltrating NK cells also downregulated CD49b expression but gain CD49a expression and exhibit effector functions, such as granzyme B upregulation and proliferation in mammary tumors. However, unlike the EOMES+ NK cells, the EOMES‒ NK cell subset is unable to respond to further in vitro stimulation and exhibits phenotypic alterations associated with immune dysfunction. These alterations included increased expression of PD-1, LAG-3, and TIGIT and decreased expression of NKp46, Ly49C/I, CD11b, and KLRG-1. Furthermore, tumor-infiltrating NKR-P1B-deficient NK cells exhibited an elevated dysfunctional immune phenotype compared to WT NK cells. These findings demonstrate that the NKR-P1B receptor plays an important role in mammary tumor surveillance by regulating anti-cancer immune responses and functional homeostasis in NK cells.
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Affiliation(s)
- Raghd Al Olabi
- Department of Biomedical Sciences, University of Windsor, Windsor, Ontario, Canada
| | - Abd El Aziz Hendy
- Department of Biomedical Sciences, University of Windsor, Windsor, Ontario, Canada
| | | | - Karla Alnajm
- Department of Biomedical Sciences, University of Windsor, Windsor, Ontario, Canada
| | - Manahel Elias
- Department of Biomedical Sciences, University of Windsor, Windsor, Ontario, Canada
| | - Mary Ibrahim
- Department of Biomedical Sciences, University of Windsor, Windsor, Ontario, Canada
| | - James R. Carlyle
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Andrew P. Makrigiannis
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Mir Munir A Rahim
- Department of Biomedical Sciences, University of Windsor, Windsor, Ontario, Canada,CONTACT Mir Munir A Rahim Department of Biomedical Sciences, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, N9B 3P4, Canada
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7
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Dornburg A, Mallik R, Wang Z, Bernal MA, Thompson B, Bruford EA, Nebert DW, Vasiliou V, Yohe LR, Yoder JA, Townsend JP. Placing human gene families into their evolutionary context. Hum Genomics 2022; 16:56. [PMID: 36369063 PMCID: PMC9652883 DOI: 10.1186/s40246-022-00429-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/12/2022] [Indexed: 11/13/2022] Open
Abstract
Following the draft sequence of the first human genome over 20 years ago, we have achieved unprecedented insights into the rules governing its evolution, often with direct translational relevance to specific diseases. However, staggering sequence complexity has also challenged the development of a more comprehensive understanding of human genome biology. In this context, interspecific genomic studies between humans and other animals have played a critical role in our efforts to decode human gene families. In this review, we focus on how the rapid surge of genome sequencing of both model and non-model organisms now provides a broader comparative framework poised to empower novel discoveries. We begin with a general overview of how comparative approaches are essential for understanding gene family evolution in the human genome, followed by a discussion of analyses of gene expression. We show how homology can provide insights into the genes and gene families associated with immune response, cancer biology, vision, chemosensation, and metabolism, by revealing similarity in processes among distant species. We then explain methodological tools that provide critical advances and show the limitations of common approaches. We conclude with a discussion of how these investigations position us to gain fundamental insights into the evolution of gene families among living organisms in general. We hope that our review catalyzes additional excitement and research on the emerging field of comparative genomics, while aiding the placement of the human genome into its existentially evolutionary context.
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Affiliation(s)
- Alex Dornburg
- Department of Bioinformatics and Genomics, UNC-Charlotte, Charlotte, NC, USA.
| | - Rittika Mallik
- Department of Bioinformatics and Genomics, UNC-Charlotte, Charlotte, NC, USA
| | - Zheng Wang
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, USA
| | - Moisés A Bernal
- Department of Biological Sciences, College of Science and Mathematics, Auburn University, Auburn, AL, USA
| | - Brian Thompson
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Elspeth A Bruford
- Department of Haematology, University of Cambridge School of Clinical Medicine, Cambridge, UK
- European Molecular Biology Laboratory, European Bioinformatics Institute, Hinxton, UK
| | - Daniel W Nebert
- Department of Environmental Health, Center for Environmental Genetics, University of Cincinnati Medical Center, P.O. Box 670056, Cincinnati, OH, 45267, USA
- Department of Pediatrics and Molecular Developmental Biology, Division of Human Genetics, Cincinnati Children's Hospital, Cincinnati, OH, 45229, USA
| | - Vasilis Vasiliou
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
| | - Laurel R Yohe
- Department of Bioinformatics and Genomics, UNC-Charlotte, Charlotte, NC, USA
| | - Jeffrey A Yoder
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - Jeffrey P Townsend
- Department of Bioinformatics and Genomics, UNC-Charlotte, Charlotte, NC, USA
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
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8
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Asenjo J, Moraru M, Al‐Akioui‐Sanz K, Altadill M, Muntasell A, López‐Botet M, Vilches C. Diversity of NKG2C genotypes in a European population: Conserved and recombinant haplotypes in the coding, promoter, and 3'-untranslated regions. HLA 2022; 100:469-478. [PMID: 35802353 PMCID: PMC9796621 DOI: 10.1111/tan.14734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/17/2022] [Accepted: 07/05/2022] [Indexed: 01/01/2023]
Abstract
NK cells monitor altered molecular patterns in tumors and infected cells through an ample array of receptors. Two families of evolutionarily distant receptors have converged to enable human NK cells to sense levels of HLA class I ligands, frequently abnormal in altered cells. Whilst different forms of polymorphism are a hallmark of killer-cell immunoglobulin-like receptors and their classic HLA-A, B, and C ligands, genetic diversity of killer-cell lectin-like receptors for the non-classical HLA-E (CD94/NKG2 heterodimers) is less conspicuous and has attracted less attention. A common pattern of diversification in both receptor families is evolution of pairs of inhibitory and activating homologs for a common ligand, the genes encoding activating receptors being more frequently affected by copy number variation (CNV). This is exemplified by the gene encoding the activating NKG2C subunit (KLRC2 or NKG2C), which marks an NK-cell subpopulation that differentiates or expands in response to cytomegalovirus. We have studied NKG2C diversity in 240 South European individuals, using polymerase chain reaction and sequencing methods to assess both gene CNV and single-nucleotide polymorphisms (SNPs) affecting its promoter, coding and 3'-untranslated (3'UT) regions. Sequence analysis revealed eight common SNPs-one in the promoter, two in the coding sequence, and five in the 3'UT region. These SNPs associate strongly with each other, forming three conserved extended haplotypes (frequencies: 0.456, 0.221, and 0.117). Homo- and heterozygous combination of these, together with complete gene deletion (0.175) and additional haplotypes with frequencies lower than 0.015, generate a diversity of NKG2C genotypes of potential immunological importance.
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Affiliation(s)
- Judit Asenjo
- Immunogenetics and Histocompatibility LabInstituto de Investigación Sanitaria Puerta de Hierro ‐ Segovia de AranaMadridSpain
| | - Manuela Moraru
- Immunogenetics and Histocompatibility LabInstituto de Investigación Sanitaria Puerta de Hierro ‐ Segovia de AranaMadridSpain
| | - Karima Al‐Akioui‐Sanz
- Immunogenetics and Histocompatibility LabInstituto de Investigación Sanitaria Puerta de Hierro ‐ Segovia de AranaMadridSpain
| | - Mireia Altadill
- Medicine and Life SciencesUniversity Pompeu FabraBarcelonaSpain
| | - Aura Muntasell
- Immunology, Department of PathologyHospital del Mar Medical Research Institute (IMIM)BarcelonaSpain,Department of Cell Biology, Physiology and ImmunologyUniversitat Autonòma de BarcelonaBellaterraCataloniaSpain
| | - Miguel López‐Botet
- Medicine and Life SciencesUniversity Pompeu FabraBarcelonaSpain,Immunology, Department of PathologyHospital del Mar Medical Research Institute (IMIM)BarcelonaSpain
| | - Carlos Vilches
- Immunogenetics and Histocompatibility LabInstituto de Investigación Sanitaria Puerta de Hierro ‐ Segovia de AranaMadridSpain
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Vaněk O, Kalousková B, Abreu C, Nejadebrahim S, Skořepa O. Natural killer cell-based strategies for immunotherapy of cancer. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2022; 129:91-133. [PMID: 35305726 DOI: 10.1016/bs.apcsb.2022.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Natural killer (NK) cells are a family of lymphocytes with a natural ability to kill infected, harmed, or malignantly transformed cells. As these cells are part of the innate immunity, the cytotoxic mechanisms are activated upon recognizing specific patterns without prior antigen sensitization. This recognition is crucial for NK cell function in the maintenance of homeostasis and immunosurveillance. NK cells not only act directly toward malignant cells but also participate in the complex immune response by producing cytokines or cross-talk with other immune cells. Cancer may be seen as a break of all immune defenses when malignant cells escape the immunity and invade surrounding tissues creating a microenvironment supporting tumor progression. This process may be reverted by intervening immune response with immunotherapy, which may restore immune recognition. NK cells are important effector cells for immunotherapy. They may be used for adoptive cell transfer, genetically modified with chimeric antigen receptors, or triggered with appropriate antibodies and other antibody-fragment-based recombinant therapeutic proteins tailored specifically for NK cell engagement. NK cell receptors, responsible for target recognition and activation of cytotoxic response, could also be targeted in immunotherapy, for example, by various bi-, tri-, or multi-specific fusion proteins designed to bridge the gap between tumor markers present on target cells and activation receptors expressed on NK cells. However, this kind of immunoactive therapeutics may be developed only with a deep functional and structural knowledge of NK cell receptor: ligand interactions. This review describes the recent developments in the fascinating protein-engineering field of NK cell immunotherapeutics.
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Affiliation(s)
- Ondřej Vaněk
- Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic.
| | - Barbora Kalousková
- Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Celeste Abreu
- Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Shiva Nejadebrahim
- Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Ondřej Skořepa
- Department of Biochemistry, Faculty of Science, Charles University, Prague, Czech Republic
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10
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Li J, Zaslavsky M, Su Y, Guo J, Sikora MJ, van Unen V, Christophersen A, Chiou SH, Chen L, Li J, Ji X, Wilhelmy J, McSween AM, Palanski BA, Mallajosyula VVA, Bracey NA, Dhondalay GKR, Bhamidipati K, Pai J, Kipp LB, Dunn JE, Hauser SL, Oksenberg JR, Satpathy AT, Robinson WH, Dekker CL, Steinmetz LM, Khosla C, Utz PJ, Sollid LM, Chien YH, Heath JR, Fernandez-Becker NQ, Nadeau KC, Saligrama N, Davis MM. KIR +CD8 + T cells suppress pathogenic T cells and are active in autoimmune diseases and COVID-19. Science 2022; 376:eabi9591. [PMID: 35258337 PMCID: PMC8995031 DOI: 10.1126/science.abi9591] [Citation(s) in RCA: 131] [Impact Index Per Article: 65.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 10/12/2021] [Accepted: 03/01/2022] [Indexed: 12/13/2022]
Abstract
In this work, we find that CD8+ T cells expressing inhibitory killer cell immunoglobulin-like receptors (KIRs) are the human equivalent of Ly49+CD8+ regulatory T cells in mice and are increased in the blood and inflamed tissues of patients with a variety of autoimmune diseases. Moreover, these CD8+ T cells efficiently eliminated pathogenic gliadin-specific CD4+ T cells from the leukocytes of celiac disease patients in vitro. We also find elevated levels of KIR+CD8+ T cells, but not CD4+ regulatory T cells, in COVID-19 patients, correlating with disease severity and vasculitis. Selective ablation of Ly49+CD8+ T cells in virus-infected mice led to autoimmunity after infection. Our results indicate that in both species, these regulatory CD8+ T cells act specifically to suppress pathogenic T cells in autoimmune and infectious diseases.
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Affiliation(s)
- Jing Li
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | - Maxim Zaslavsky
- Program in Computer Science, Stanford University, Stanford, CA, USA
| | - Yapeng Su
- Institute for Systems Biology, Seattle, WA, USA
| | - Jing Guo
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael J. Sikora
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
| | - Vincent van Unen
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | - Asbjørn Christophersen
- K.G. Jebsen Coeliac Disease Research Centre, University of Oslo, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Immunology, University of Oslo, Oslo, Norway
| | - Shin-Heng Chiou
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | - Liang Chen
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | - Jiefu Li
- The Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Xuhuai Ji
- Human Immune Monitoring Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Julie Wilhelmy
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | - Alana M. McSween
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | | | | | - Nathan A. Bracey
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | - Gopal Krishna R. Dhondalay
- Sean N. Parker Center for Allergy and Asthma Research, Department of Medicine, Stanford University, Stanford, CA, USA
| | - Kartik Bhamidipati
- Program in Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Joy Pai
- Program in Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Lucas B. Kipp
- Division of Neuroimmunology, Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Jeffrey E. Dunn
- Division of Neuroimmunology, Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, USA
| | - Stephen L. Hauser
- Department of Neurology and UCSF Weill Institute for Neurosciences, University of California, San Francisco, CA, USA
| | - Jorge R. Oksenberg
- Department of Neurology and UCSF Weill Institute for Neurosciences, University of California, San Francisco, CA, USA
| | - Ansuman T. Satpathy
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - William H. Robinson
- VA Palo Alto Health Care System, Palo Alto, CA, USA
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University, Stanford, CA, USA
| | - Cornelia L. Dekker
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| | - Lars M. Steinmetz
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Genome Technology Center, Stanford University, Palo Alto, CA, USA
- European Molecular Biology Laboratory (EMBL), Genome Biology Unit, Heidelberg, Germany
| | - Chaitan Khosla
- Department of Chemistry, Stanford University, Stanford, CA, USA
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
- Stanford ChEM-H, Stanford University, Stanford, CA, USA
| | - Paul J. Utz
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University, Stanford, CA, USA
| | - Ludvig M. Sollid
- K.G. Jebsen Coeliac Disease Research Centre, University of Oslo, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Immunology, University of Oslo, Oslo, Norway
- Department of Immunology, Oslo University Hospital, Oslo, Norway
| | - Yueh-Hsiu Chien
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - James R. Heath
- Institute for Systems Biology, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | | | - Kari C. Nadeau
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
- Sean N. Parker Center for Allergy and Asthma Research, Department of Medicine, Stanford University, Stanford, CA, USA
| | - Naresha Saligrama
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
| | - Mark M. Davis
- Institute of Immunity, Transplantation and Infection, Stanford University School of Medicine, Stanford, CA, USA
- The Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
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11
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Weaver GC, Arya R, Schneider CL, Hudson AW, Stern LJ. Structural Models for Roseolovirus U20 And U21: Non-Classical MHC-I Like Proteins From HHV-6A, HHV-6B, and HHV-7. Front Immunol 2022; 13:864898. [PMID: 35444636 PMCID: PMC9013968 DOI: 10.3389/fimmu.2022.864898] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 03/08/2022] [Indexed: 01/08/2023] Open
Abstract
Human roseolovirus U20 and U21 are type I membrane glycoproteins that have been implicated in immune evasion by interfering with recognition of classical and non-classical MHC proteins. U20 and U21 are predicted to be type I glycoproteins with extracytosolic immunoglobulin-like domains, but detailed structural information is lacking. AlphaFold and RoseTTAfold are next generation machine-learning-based prediction engines that recently have revolutionized the field of computational three-dimensional protein structure prediction. Here, we review the structural biology of viral immunoevasins and the current status of computational structure prediction algorithms. We use these computational tools to generate structural models for U20 and U21 proteins, which are predicted to adopt MHC-Ia-like folds with closed MHC platforms and immunoglobulin-like domains. We evaluate these structural models and place them within current understanding of the structural basis for viral immune evasion of T cell and natural killer cell recognition.
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Affiliation(s)
- Grant C. Weaver
- Immunology and Microbiology Graduate Program, Morningside Graduate School of Biomedical Sciences, UMass Chan Medical School, Worcester, MA, United States
- Department of Pathology, UMass Chan Medical School, Worcester, MA, United States
| | - Richa Arya
- Department of Pathology, UMass Chan Medical School, Worcester, MA, United States
| | | | - Amy W. Hudson
- Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Lawrence J. Stern
- Immunology and Microbiology Graduate Program, Morningside Graduate School of Biomedical Sciences, UMass Chan Medical School, Worcester, MA, United States
- Department of Pathology, UMass Chan Medical School, Worcester, MA, United States
- Department of Biochemistry and Molecular Biotechnology, UMass Chan Medical School, Worcester, MA, United States
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12
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Plasil M, Futas J, Jelinek A, Burger PA, Horin P. Comparative Genomics of the Major Histocompatibility Complex (MHC) of Felids. Front Genet 2022; 13:829891. [PMID: 35309138 PMCID: PMC8924298 DOI: 10.3389/fgene.2022.829891] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/15/2022] [Indexed: 12/25/2022] Open
Abstract
This review summarizes the current knowledge on the major histocompatibility complex (MHC) of the family Felidae. This family comprises an important domestic species, the cat, as well as a variety of free-living felids, including several endangered species. As such, the Felidae have the potential to be an informative model for studying different aspects of the biological functions of MHC genes, such as their role in disease mechanisms and adaptation to different environments, as well as the importance of genetic diversity for conservation issues in free-ranging or captive populations. Despite this potential, the current knowledge on the MHC in the family as a whole is fragmentary and based mostly on studies of the domestic cat and selected species of big cats. The overall structure of the domestic cat MHC is similar to other mammalian MHCs following the general scheme "centromere-MHC class I-MHC class III-MHC class II" with some differences in the gene contents. An unambiguously defined orthologue of the non-classical class I HLA-E gene has not been identified so far and the class II DQ and DP genes are missing or pseudogenized, respectively. A comparison with available genomes of other felids showed a generally high level of structural and sequence conservation of the MHC region. Very little and fragmentary information on in vitro and/or in vivo biological functions of felid MHC genes is available. So far, no association studies have indicated effects of MHC genetic diversity on a particular disease. No information is available on the role of MHC class I molecules in interactions with Natural Killer (NK) cell receptors or on the putative evolutionary interactions (co-evolution) of the underlying genes. A comparison of complex genomic regions encoding NK cell receptors (the Leukocyte Receptor Complex, LRC and the Natural Killer Cell Complex, NKC) in the available felid genomes showed a higher variability in the NKC compared to the LRC and the MHC regions. Studies of the genetic diversity of domestic cat populations and/or specific breeds have focused mainly on DRB genes. Not surprisingly, higher levels of MHC diversity were observed in stray cats compared to pure breeds, as evaluated by DRB sequencing as well as by MHC-linked microsatellite typing. Immunogenetic analysis in wild felids has only been performed on MHC class I and II loci in tigers, Namibian leopards and cheetahs. This information is important as part of current conservation tasks to assess the adaptive potential of endangered wild species at the human-wildlife interface, which will be essential for preserving biodiversity in a functional ecosystem.
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Affiliation(s)
- Martin Plasil
- Research Group Animal Immunogenomics, Ceitec Vetuni, University of Veterinary Sciences Brno, Brno, Czech Republic
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, Brno, Czech Republic
| | - Jan Futas
- Research Group Animal Immunogenomics, Ceitec Vetuni, University of Veterinary Sciences Brno, Brno, Czech Republic
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, Brno, Czech Republic
| | - April Jelinek
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, Brno, Czech Republic
| | - Pamela A. Burger
- Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, VIA, Vienna, Austria
| | - Petr Horin
- Research Group Animal Immunogenomics, Ceitec Vetuni, University of Veterinary Sciences Brno, Brno, Czech Republic
- Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary Sciences Brno, Brno, Czech Republic
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13
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Li J, Zaslavsky M, Su Y, Sikora MJ, van Unen V, Christophersen A, Chiou SH, Chen L, Li J, Ji X, Wilhelmy J, McSween AM, Palanski BA, Aditya Mallajosyula VV, Dhondalay GKR, Bhamidipati K, Pai J, Kipp LB, Dunn JE, Hauser SL, Oksenberg JR, Satpathy AT, Robinson WH, Steinmetz LM, Khosla C, Utz PJ, Sollid LM, Heath JR, Fernandez-Becker NQ, Nadeau KC, Saligrama N, Davis MM. Human KIR + CD8 + T cells target pathogenic T cells in Celiac disease and are active in autoimmune diseases and COVID-19. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021:2021.12.23.473930. [PMID: 34981055 PMCID: PMC8722592 DOI: 10.1101/2021.12.23.473930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
UNLABELLED Previous reports show that Ly49 + CD8 + T cells can suppress autoimmunity in mouse models of autoimmune diseases. Here we find a markedly increased frequency of CD8 + T cells expressing inhibitory Killer cell Immunoglobulin like Receptors (KIR), the human equivalent of the Ly49 family, in the blood and inflamed tissues of various autoimmune diseases. Moreover, KIR + CD8 + T cells can efficiently eliminate pathogenic gliadin-specific CD4 + T cells from Celiac disease (CeD) patients' leukocytes in vitro . Furthermore, we observe elevated levels of KIR + CD8 + T cells, but not CD4 + regulatory T cells, in COVID-19 and influenza-infected patients, and this correlates with disease severity and vasculitis in COVID-19. Expanded KIR + CD8 + T cells from these different diseases display shared phenotypes and similar T cell receptor sequences. These results characterize a regulatory CD8 + T cell subset in humans, broadly active in both autoimmune and infectious diseases, which we hypothesize functions to control self-reactive or otherwise pathogenic T cells. ONE-SENTENCE SUMMARY Here we identified KIR + CD8 + T cells as a regulatory CD8 + T cell subset in humans that suppresses self-reactive or otherwise pathogenic CD4 + T cells.
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14
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Liu Y, Balachandran YL, Li Z, Cong Y, Shao Y, Jiang X. Two dimensional nanosheets as immunoregulator improve HIV vaccine efficacy. Chem Sci 2021; 13:178-187. [PMID: 35059165 PMCID: PMC8694375 DOI: 10.1039/d1sc04044h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/27/2021] [Indexed: 01/02/2023] Open
Abstract
Two-dimensional (2D) nanosheets as carriers have shown promising potential for surface-displaying or loading various drugs. Nevertheless, developing sheet-like materials themselves into an immunoregulator has never been realized so far. In this study, we take advantage of the immunoregulatory effects of rare earth elements themselves and develop water-soluble erbium-dysprosium 2D nanosheets (2D NSs). Such 2D NSs can target lymph nodes and activate macrophages to improve vaccine efficacy in mice significantly. Transcriptome analysis further reveals that six critical molecules (Msr1, Ccr2, Serpinb9, Klrk1, Klrd1, Klrc1) closely correlate with 2D NS-mediated immunoregulation in vivo. For the first time, the present work realizes a proof-of-concept for designing immunoregulatory 2D NSs and shows a promising potential of 2D NSs for improving the immunoprophylaxis/immunotherapy of vaccines.
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Affiliation(s)
- Ye Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College Kunming Yunnan 650000 P. R. China
| | - Yekkuni L Balachandran
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology No. 1088 Xueyuan Rd, Nanshan District Shenzhen Guangdong 518055 P. R. China
| | - Zulan Li
- Clinical Laboratory of South Building, Chinese P. L. A. General Hospital No. 28 Fuxing Road Beijing 100853 P. R. China
| | - Yulong Cong
- Clinical Laboratory of South Building, Chinese P. L. A. General Hospital No. 28 Fuxing Road Beijing 100853 P. R. China
| | - Yiming Shao
- State Key Laboratory of Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention Beijing P. R. China
| | - Xingyu Jiang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Department of Biomedical Engineering, Southern University of Science and Technology No. 1088 Xueyuan Rd, Nanshan District Shenzhen Guangdong 518055 P. R. China
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15
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Yomogida K, Bigley TM, Trsan T, Gilfillan S, Cella M, Yokoyama WM, Egawa T, Colonna M. Hobit confers tissue-dependent programs to type 1 innate lymphoid cells. Proc Natl Acad Sci U S A 2021; 118:e2117965118. [PMID: 34880136 PMCID: PMC8685927 DOI: 10.1073/pnas.2117965118] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2021] [Indexed: 12/23/2022] Open
Abstract
Identification of type 1 innate lymphoid cells (ILC1s) has been problematic. The transcription factor Hobit encoded by Zfp683 has been proposed as a major driver of ILC1 programs. Using Zfp683 reporter mice, we showed that correlation of Hobit expression with ILC1s is tissue- and context-dependent. In liver and intestinal mucosa, Zfp683 expression correlated well with ILC1s; in salivary glands, Zfp683 was coexpressed with the natural killer (NK) master transcription factors Eomes and TCF1 in a unique cell population, which we call ILC1-like NK cells; during viral infection, Zfp683 was induced in conventional NK cells of spleen and liver. The impact of Zfp683 deletion on ILC1s and NK cells was also multifaceted, including a marked decrease in granzyme- and interferon-gamma (IFNγ)-producing ILC1s in the liver, slightly fewer ILC1s and more Eomes+ TCF1+ ILC1-like NK cells in salivary glands, and only reduced production of granzyme B by ILC1 in the intestinal mucosa. NK cell-mediated control of viral infection was unaffected. We conclude that Hobit has two major impacts on ILC1s: It sustains liver ILC1 numbers, while promoting ILC1 functional maturation in other tissues by controlling TCF1, Eomes, and granzyme expression.
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Affiliation(s)
- Kentaro Yomogida
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110
| | - Tarin M Bigley
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110
| | - Tihana Trsan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Susan Gilfillan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Marina Cella
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Wayne M Yokoyama
- Rheumatology Division, Washington University School of Medicine, St. Louis, MO 63110
| | - Takeshi Egawa
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110;
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16
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Cai Z, Xing R, Liu J, Xing F. Commentary: PIRs Mediate Innate Myeloid Cell Memory to Nonself MHC Molecules. Front Immunol 2021; 12:721344. [PMID: 34804010 PMCID: PMC8600524 DOI: 10.3389/fimmu.2021.721344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 09/22/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Zhenlong Cai
- Department of Immunobiology, Institute of Tissue Transplantation and Immunology, Ministry of Education (MOE) Key Laboratory of Tumor Molecular Biology, Jinan University, Guangzhou, China
| | - Rui Xing
- Ministry of Education (MOE) Key Laboratory of Protein Sciences, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Jing Liu
- Department of Prosthodontics, Jinan University School of Stomatology, Guangzhou, China
| | - Feiyue Xing
- Department of Immunobiology, Institute of Tissue Transplantation and Immunology, Ministry of Education (MOE) Key Laboratory of Tumor Molecular Biology, Jinan University, Guangzhou, China
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17
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Lin CM, Gill RG, Mehrad B. The natural killer cell activating receptor, NKG2D, is critical to antibody-dependent chronic rejection in heart transplantation. Am J Transplant 2021; 21:3550-3560. [PMID: 34014614 PMCID: PMC9036609 DOI: 10.1111/ajt.16690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 04/26/2021] [Accepted: 05/04/2021] [Indexed: 01/25/2023]
Abstract
Chronic rejection is among the most pressing clinical challenges in solid organ transplantation. Interestingly, in a mouse model of heterotopic heart transplantation, antibody-dependent, natural killer (NK) cell-mediated chronic cardiac allograft vasculopathy occurs in some donor-recipient strain combinations, but not others. In this study, we sought to identify the mechanism underlying this unexplained phenomenon. Cardiac allografts from major histocompatibility complex (MHC) mismatched donors were transplanted into immune-deficient C57Bl/6.rag-/- recipients, followed by administration of a monoclonal antibody against the donor MHC class I antigen. We found marked allograft vasculopathy in hearts from C3H donors, but near-complete protection of BALB/c allografts from injury. We found no difference in recipient NK cell phenotype or intrinsic responsiveness to activating signals between recipients of C3H versus BALB/c allografts. However, cardiac endothelial cells from C3H allografts showed an approximately twofold higher expression of Rae-1, an activating ligand of the NK cell receptor natural killer group 2D (NKG2D). Importantly, the administration of a neutralizing antibody against NKG2D abrogated the development of allograft vasculopathy in recipients of C3H allografts, even in the presence of donor-specific antibodies. Therefore, the activating NK cell receptor NKG2D is necessary in this model of chronic cardiac allograft vasculopathy, and strain-dependent expression of NK activating ligands correlates with the development of this disease.
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Affiliation(s)
- Christine M. Lin
- University of Florida. Department of Medicine (Gainesville, FL, USA)
| | - Ronald G. Gill
- University of Colorado, Anschutz Medical Campus. Department of Surgery (Aurora, CO, USA)
| | - Borna Mehrad
- University of Florida. Department of Medicine (Gainesville, FL, USA)
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18
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Quamine AE, Olsen MR, Cho MM, Capitini CM. Approaches to Enhance Natural Killer Cell-Based Immunotherapy for Pediatric Solid Tumors. Cancers (Basel) 2021; 13:2796. [PMID: 34199783 PMCID: PMC8200074 DOI: 10.3390/cancers13112796] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/26/2021] [Accepted: 05/29/2021] [Indexed: 12/12/2022] Open
Abstract
Treatment of metastatic pediatric solid tumors remain a significant challenge, particularly in relapsed and refractory settings. Standard treatment has included surgical resection, radiation, chemotherapy, and, in the case of neuroblastoma, immunotherapy. Despite such intensive therapy, cancer recurrence is common, and most tumors become refractory to prior therapy, leaving patients with few conventional treatment options. Natural killer (NK) cells are non-major histocompatibility complex (MHC)-restricted lymphocytes that boast several complex killing mechanisms but at an added advantage of not causing graft-versus-host disease, making use of allogeneic NK cells a potential therapeutic option. On top of their killing capacity, NK cells also produce several cytokines and growth factors that act as key regulators of the adaptive immune system, positioning themselves as ideal effector cells for stimulating heavily pretreated immune systems. Despite this promise, clinical efficacy of adoptive NK cell therapy to date has been inconsistent, prompting a detailed understanding of the biological pathways within NK cells that can be leveraged to develop "next generation" NK cell therapies. Here, we review advances in current approaches to optimizing the NK cell antitumor response including combination with other immunotherapies, cytokines, checkpoint inhibition, and engineering NK cells with chimeric antigen receptors (CARs) for the treatment of pediatric solid tumors.
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Affiliation(s)
- Aicha E. Quamine
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.E.Q.); (M.R.O.); (M.M.C.)
| | - Mallery R. Olsen
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.E.Q.); (M.R.O.); (M.M.C.)
| | - Monica M. Cho
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.E.Q.); (M.R.O.); (M.M.C.)
| | - Christian M. Capitini
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.E.Q.); (M.R.O.); (M.M.C.)
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
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19
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Phenotypic and Functional Characteristics of a Novel Influenza Virus Hemagglutinin-Specific Memory NK Cell. J Virol 2021; 95:JVI.00165-21. [PMID: 33827945 DOI: 10.1128/jvi.00165-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/28/2021] [Indexed: 12/30/2022] Open
Abstract
Immune memory represents the most efficient defense against invasion and transmission of infectious pathogens. In contrast to memory T and B cells, the roles of innate immunity in recall responses remain inconclusive. In this study, we identified a novel mouse spleen NK cell subset expressing NKp46 and NKG2A induced by intranasal influenza virus infection. These memory NK cells specifically recognize N-linked glycosylation sites on influenza hemagglutinin (HA) protein. Different from memory-like NK cells reported previously, these NKp46+ NKG2A+ memory NK cells exhibited HA-specific silence of cytotoxicity but increase of gamma interferon (IFN-γ) response against influenza virus-infected cells, which could be reversed by pifithrin-μ, a p53-heat shock protein 70 (HSP70) signaling inhibitor. During recall responses, splenic NKp46+ NKG2A+ NK cells were recruited to infected lung and modulated viral clearance of virus and CD8+ T cell distribution, resulting in improved clinical outcomes. This long-lived NK memory bridges innate and adaptive immune memory response and promotes the homeostasis of local environment during recall response.IMPORTANCE In this study, we demonstrate a novel hemagglutinin (HA)-specific NKp46+ NKG2A+ NK cell subset induced by influenza A virus infection. These memory NK cells show virus-specific decreased cytotoxicity and increased gamma interferon (IFN-γ) on reencountering the same influenza virus antigen. In addition, they modulate host recall responses and CD8 T cell distribution, thus bridging the innate immune and adaptive immune responses during influenza virus infection.
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20
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Parikh BA, Bern MD, Piersma SJ, Yang L, Beckman DL, Poursine-Laurent J, Plougastel-Douglas B, Yokoyama WM. Control of Viral Infection by Natural Killer Cell Inhibitory Receptors. Cell Rep 2021; 32:107969. [PMID: 32726632 PMCID: PMC7458139 DOI: 10.1016/j.celrep.2020.107969] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 05/27/2020] [Accepted: 07/08/2020] [Indexed: 12/11/2022] Open
Abstract
Major histocompatibility complex class I (MHC-I)-restricted immune responses are largely attributed to cytotoxic T lymphocytes (CTLs). However, natural killer (NK) cells, as predicted by the missing-self hypothesis, have opposing requirements for MHC-I, suggesting that they may also demonstrate MHC-I-restricted effects. In mice, the Ly49 inhibitory receptors prevent NK cell killing of missing-self targets in effector responses, and they have a proposed second function in licensing or educating NK cells via self-MHC-I in vivo. Here we show MHC-I-restricted control of murine cytomegalovirus (MCMV) infection in vivo that is NK cell dependent. Using mice lacking specific Ly49 receptors, we show that control of MCMV requires inhibitory Ly49 receptors and an inhibitory signaling motif and the capacity for MCMV to downregulate MHC-I. Taken together, these data provide definitive evidence that the inhibitory receptors are required for missing-self rejection and are relevant to MHC-I-restricted NK cell control of a viral infection in vivo. Parikh et al. show that major histocompatibility complex class I (MHC-I)-restricted control of viral infection is due to natural killer (NK) cells rather than cytotoxic T cells. Inhibitory NK cell receptors are essential for protection, requiring NK cell licensing (education) by self-MHC-I and missing-self recognition due to virus-induced MHC-I downregulation.
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Affiliation(s)
- Bijal A Parikh
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Michael D Bern
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sytse J Piersma
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Liping Yang
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Diana L Beckman
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jennifer Poursine-Laurent
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Béatrice Plougastel-Douglas
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Wayne M Yokoyama
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
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21
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Li Y, Wang F, Imani S, Tao L, Deng Y, Cai Y. Natural Killer Cells: Friend or Foe in Metabolic Diseases? Front Immunol 2021; 12:614429. [PMID: 33717101 PMCID: PMC7943437 DOI: 10.3389/fimmu.2021.614429] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/12/2021] [Indexed: 12/12/2022] Open
Abstract
The worldwide epidemic of metabolic diseases, especially obesity and other diseases caused by it, has shown a dramatic increase in incidence. A great deal of attention has been focused on the underlying mechanisms of these pathological processes and potential strategies to solve these problems. Chronic inflammation initiated by abdominal adipose tissues and immune cell activation in obesity is the major cause of the consequent development of complications. In addition to adipocytes, macrophages and monocytes, natural killer (NK) cells have been verified to be vital components involved in shaping the inflammatory microenvironment, thereby leading to various obesity-related metabolic diseases. Here, we provide an overview of the roles of NK cells and the interactions of these cells with other immune and nonimmune cells in the pathological processes of metabolic diseases. Finally, we also discuss potential therapeutic strategies targeting NK cells to treat metabolic diseases.
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Affiliation(s)
- Yi Li
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.,Student Brigade, Preclinical School of Medicine, The Fourth Military Medical University, Xi'an, China.,Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Fangjie Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Saber Imani
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Ling Tao
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Youcai Deng
- Institute of Materia Medica, College of Pharmacy, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yue Cai
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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22
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Hu Y, Wang X, Wei Y, Liu H, Zhang J, Shen Y, Cao J. Functional Inhibition of Natural Killer Cells in a BALB/c Mouse Model of Liver Fibrosis Induced by Schistosoma japonicum Infection. Front Cell Infect Microbiol 2020; 10:598987. [PMID: 33330140 PMCID: PMC7710793 DOI: 10.3389/fcimb.2020.598987] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/23/2020] [Indexed: 12/12/2022] Open
Abstract
Background and Aims Schistosomiasis japonica is a widespread human zoonotic disease, and in China, there are many patients with schistosomiasis suffering from liver fibrosis. Many studies have shown that natural killer (NK) cells could reduce the progression of hepatic fibrosis by directly killing hepatic stellate cells (HSCs). However, NK cells could not inhibit the progress of liver fibrosis induced by Schistosoma japonicum infection. We aimed to investigate the function of NK cells in schistosomiasis. Methods BALB/c mice were infected with S. japonicum cercariae. The receptors and their proportions expressed on NK cells in the liver and spleen from infected mice were detected using flow cytometry. Levels of IFN-γ, perforin, and granzyme of NK cells, and collagen I, III, and α-SMA of hepatic tissue, were detected using quantitative real-time PCR. Changes in cytokine levels in sera were detected using a cytometric bead array. Liver fibrosis was evaluated using hematoxylin and eosin and Masson staining. NK function in the schistosomiasis model was analyzed. Results From 2 to 4 weeks post-infection, NK cells were activated, with significantly increased levels of effector molecules (IFN-γ, perforin, and granzyme) that peaked at 4 weeks after infection. The proportion of NK cells increased in the liver and spleen from 6 to 10 weeks post-infection. However, the function of NK cells was inhibited from 6 to 10 weeks post-infection with significantly decreased levels of activated receptors (AR), inhibitory receptors (IR), and effector molecules. The levels of IFN-γ, IL-12, and IL-6 in mouse serum peaked at 6 weeks post-infection, and IL-10 and IL-21 levels peaked at 8 weeks post-infection. Hepatic fibrosis markers increased significantly at 6 weeks after infection. Conclusion Our study suggested that NK cells were activated from 2 to 4 weeks post-infection and participated in inflammation in the mouse model. After the S. japonicum laid their eggs, NK cells became inhibited, with decreased levels of both activating and inhibitory NK cell receptors, as well as cytotoxic molecules. In addition, liver fibrosis formed. In mice infected with S. japonicum, the process of liver fibrosis might be alleviated by removing the functional inhibition of NK cells.
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Affiliation(s)
- Yuan Hu
- Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Xiaoling Wang
- Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Yuhuan Wei
- Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Hua Liu
- Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Jing Zhang
- Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Yujuan Shen
- Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Jianping Cao
- Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Center for Tropical Diseases, Shanghai, China
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23
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Futas J, Oppelt J, Janova E, Musilova P, Horin P. Complex variation in the KLRA (LY49) immunity-related genomic region in horses. HLA 2020; 96:257-267. [PMID: 32421927 DOI: 10.1111/tan.13939] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/22/2020] [Accepted: 05/14/2020] [Indexed: 12/30/2022]
Abstract
Natural killer (NK) cells play important roles in innate and adaptive immunity, as well as in the reproduction of placental mammals. Ly49 (KLRA) molecules represent a lectin-like type of NK cell receptor encoded within a complex genomic region, the NK cell complex. In rodents and horses, an expansion of the genes encoding Ly49 receptors leading to the formation of a gene family was observed. High sequence similarities and frequent high polymorphism of multiple family members represent an obstacle both for their individual identification and for annotation in the reference genomes of their respective species. Here, we focused on resolving complex variation of the KLRA gene family observed in domestic and Przewalski's horses. The KLRA (LY49) genomic region contains six genes (KLRA2-KLRA7) and one putative pseudogene, KLRA1. Two types of polymorphism were observed in the horses analyzed. Copy number variation between haplotypes was documented for the gene KLRA7 by polymerase chain reaction. As expected, the major source of variation of all KLRA genes, including KLRA7, is because of single nucleotide polymorphisms, many of them being nonsynonymous substitutions. Extensive allelic variability of the expanded KLRA (LY49) genes was observed. For four out of the six functional KLRA, high numbers of novel allelic amino acid sequence variants were identified in the genes studied, suggesting that this variation might be of functional importance, especially in the context of high polymorphism of their presumed ligands encoded by major histocompatibility complex class I genes. In fact, polymorphic amino acid sites were mostly found in the ligand-binding C-type lectin-like domain of the putative receptor molecule.
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Affiliation(s)
- Jan Futas
- RG Animal Immunogenomics, Central European Institute of Technology (CEITEC)-VFU Brno, Brno, Czech Republic.,Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences (VFU) Brno, Brno, Czech Republic
| | - Jan Oppelt
- RG Animal Immunogenomics, Central European Institute of Technology (CEITEC)-VFU Brno, Brno, Czech Republic
| | - Eva Janova
- RG Animal Immunogenomics, Central European Institute of Technology (CEITEC)-VFU Brno, Brno, Czech Republic.,Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences (VFU) Brno, Brno, Czech Republic
| | - Petra Musilova
- RG Cytogenomics, Central European Institute of Technology (CEITEC)-Veterinary Research Institute, Brno, Czech Republic
| | - Petr Horin
- RG Animal Immunogenomics, Central European Institute of Technology (CEITEC)-VFU Brno, Brno, Czech Republic.,Department of Animal Genetics, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences (VFU) Brno, Brno, Czech Republic
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24
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Gibson MS, Allan AJ, Sanderson ND, Birch J, Gubbins S, Ellis SA, Hammond JA. Two Lineages of KLRA with Contrasting Transcription Patterns Have Been Conserved at a Single Locus during Ruminant Speciation. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 204:2455-2463. [PMID: 32213565 PMCID: PMC7167460 DOI: 10.4049/jimmunol.1801363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 02/22/2020] [Indexed: 01/29/2023]
Abstract
Cattle possess the most diverse repertoire of NK cell receptor genes among all mammals studied to date. Killer cell receptor genes encoded within the NK complex and killer cell Ig-like receptor genes encoded within the leukocyte receptor complex have both been expanded and diversified. Our previous studies identified two divergent and polymorphic KLRA alleles within the NK complex in the Holstein-Friesian breed of dairy cattle. By examining a much larger cohort and other ruminant species, we demonstrate the emergence and fixation of two KLRA allele lineages (KLRA*01 and -*02) at a single locus during ruminant speciation. Subsequent recombination events between these allele lineages have increased the frequency of KLRA*02 extracellular domains. KLRA*01 and KLRA*02 transcription levels contrasted in response to cytokine stimulation, whereas homozygous animals consistently transcribed higher levels of KLRA, regardless of the allele lineage. KLRA*02 mRNA levels were also generally higher than KLRA*01 Collectively, these data point toward alternative functional roles governed by KLRA genotype and allele lineage. On a background of high genetic diversity of NK cell receptor genes, this KLRA allele fixation points to fundamental and potentially differential function roles.
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Affiliation(s)
- Mark S Gibson
- The Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom
| | - Alasdair J Allan
- The Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom
| | | | - James Birch
- The Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom
| | - Simon Gubbins
- The Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom
| | - Shirley A Ellis
- The Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom
| | - John A Hammond
- The Pirbright Institute, Woking, Surrey GU24 0NF, United Kingdom
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25
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Genetic Variation in Type 1 Diabetes Reconfigures the 3D Chromatin Organization of T Cells and Alters Gene Expression. Immunity 2020; 52:257-274.e11. [PMID: 32049053 DOI: 10.1016/j.immuni.2020.01.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 10/23/2019] [Accepted: 01/15/2020] [Indexed: 02/06/2023]
Abstract
Genetics is a major determinant of susceptibility to autoimmune disorders. Here, we examined whether genome organization provides resilience or susceptibility to sequence variations, and how this would contribute to the molecular etiology of an autoimmune disease. We generated high-resolution maps of linear and 3D genome organization in thymocytes of NOD mice, a model of type 1 diabetes (T1D), and the diabetes-resistant C57BL/6 mice. Multi-enhancer interactions formed at genomic regions harboring genes with prominent roles in T cell development in both strains. However, diabetes risk-conferring loci coalesced enhancers and promoters in NOD, but not C57BL/6 thymocytes. 3D genome mapping of NODxC57BL/6 F1 thymocytes revealed that genomic misfolding in NOD mice is mediated in cis. Moreover, immune cells infiltrating the pancreas of humans with T1D exhibited increased expression of genes located on misfolded loci in mice. Thus, genetic variation leads to altered 3D chromatin architecture and associated changes in gene expression that may underlie autoimmune pathology.
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26
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Production of recombinant soluble dimeric C-type lectin-like receptors of rat natural killer cells. Sci Rep 2019; 9:17836. [PMID: 31780667 PMCID: PMC6882821 DOI: 10.1038/s41598-019-52114-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 10/14/2019] [Indexed: 12/02/2022] Open
Abstract
Working at the border between innate and adaptive immunity, natural killer (NK) cells play a key role in the immune system by protecting healthy cells and by eliminating malignantly transformed, stressed or virally infected cells. NK cell recognition of a target cell is mediated by a receptor “zipper” consisting of various activating and inhibitory receptors, including C-type lectin-like receptors. Among this major group of receptors, two of the largest rodent receptor families are the NKR-P1 and the Clr receptor families. Although these families have been shown to encode receptor-ligand pairs involved in MHC-independent self-nonself discrimination and are a target for immune evasion by tumour cells and viruses, structural mechanisms of their mutual recognition remain less well characterized. Therefore, we developed a non-viral eukaryotic expression system based on transient transfection of suspension-adapted human embryonic kidney 293 cells to produce soluble native disulphide dimers of NK cell C-type lectin-like receptor ectodomains. The expression system was optimized using green fluorescent protein and secreted alkaline phosphatase, easily quantifiable markers of recombinant protein production. We describe an application of this approach to the recombinant protein production and characterization of native rat NKR-P1B and Clr-11 proteins suitable for further structural and functional studies.
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27
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Rautela J, Dagley LF, de Oliveira CC, Schuster IS, Hediyeh-Zadeh S, Delconte RB, Cursons J, Hennessy R, Hutchinson DS, Harrison C, Kita B, Vivier E, Webb AI, Degli-Esposti MA, Davis MJ, Huntington ND, Souza-Fonseca-Guimaraes F. Therapeutic blockade of activin-A improves NK cell function and antitumor immunity. Sci Signal 2019; 12:12/596/eaat7527. [PMID: 31455725 DOI: 10.1126/scisignal.aat7527] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Natural killer (NK) cells are innate lymphocytes that play a major role in immunosurveillance against tumor initiation and metastatic spread. The signals and checkpoints that regulate NK cell fitness and function in the tumor microenvironment are not well defined. Transforming growth factor-β (TGF-β) is a suppressor of NK cells that inhibits interleukin-15 (IL-15)-dependent signaling events and increases the abundance of receptors that promote tissue residency. Here, we showed that NK cells express the type I activin receptor ALK4, which, upon binding to its ligand activin-A, phosphorylated SMAD2/3 to suppress IL-15-mediated NK cell metabolism. Activin-A impaired human and mouse NK cell proliferation and reduced the production of granzyme B to impair tumor killing. Similar to TGF-β, activin-A also induced SMAD2/3 phosphorylation and stimulated NK cells to increase their cell surface expression of several markers of ILC1 cells. Activin-A also induced these changes in TGF-β receptor-deficient NK cells, suggesting that activin-A and TGF-β stimulate independent pathways that drive SMAD2/3-mediated NK cell suppression. Last, inhibition of activin-A by follistatin substantially slowed orthotopic melanoma growth in mice. These data highlight the relevance of examining TGF-β-independent SMAD2/3 signaling mechanisms as a therapeutic axis to relieve NK cell suppression and promote antitumor immunity.
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Affiliation(s)
- Jai Rautela
- Division of Molecular Immunology, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia.,Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Laura F Dagley
- Systems Biology and Personalized Medicine Division, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Carolina C de Oliveira
- Laboratório de Células Inflamatórias e Neoplásicas, Departamento de Biologia Celular, SCB, Centro Politecnico, Universidade Federal do Paraná, Curitiba, CEP 81531-980, PR, Brazil
| | - Iona S Schuster
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Crawley, Western Australia, Australia.,Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia.,Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Soroor Hediyeh-Zadeh
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology and Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Rebecca B Delconte
- Division of Molecular Immunology, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Joseph Cursons
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology and Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Robert Hennessy
- Division of Molecular Immunology, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Dana S Hutchinson
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Craig Harrison
- Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia
| | - Badia Kita
- Paranta Biosciences Limited, Melbourne, Victoria 3004, Australia
| | - Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, Inserm, CNRS, 13288 Marseille, France
| | - Andrew I Webb
- Systems Biology and Personalized Medicine Division, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Mariapia A Degli-Esposti
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Crawley, Western Australia, Australia.,Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia.,Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Melissa J Davis
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology and Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia.,Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Nicholas D Huntington
- Division of Molecular Immunology, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia.,Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Fernando Souza-Fonseca-Guimaraes
- Division of Molecular Immunology, The Walter and Eliza Hall Institute of Medical Research and Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia. .,University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
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28
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Goyos A, Fort M, Sharma A, Lebrec H. Current Concepts in Natural Killer Cell Biology and Application to Drug Safety Assessments. Toxicol Sci 2019; 170:10-19. [PMID: 31020324 DOI: 10.1093/toxsci/kfz098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Natural killer (NK) cells are lymphocytes capable of cytotoxicity against virally infected cells and tumor cells. The display of effector function by NK cells is the result of interactions between germline encoded activating/inhibitory NK cell receptors and their ligands (major histocompatibility complex class I, major histocompatibility complex class I-like, viral, and cellular stress-related surface molecules) expressed on target cells. Determination of NK cell number and function is a common element of the immunotoxicology assessment paradigm for the development of certain classes of pharmaceuticals across a range of modalities. This article summarizes the evidence associating NK cell dysfunction with infectious and cancer risks, reviews emerging NK cell biology, including the impact of immunogenetics on NK cell education and function, and provides perspectives about points to consider when assessing NK cell function in different species in the context of safety assessment.
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Affiliation(s)
- Ana Goyos
- Amgen Research, Inc, South San Francisco, California 94080
| | - Madeline Fort
- Amgen Research, Inc, South San Francisco, California 94080
| | - Amy Sharma
- Genentech, Inc, South San Francisco, California 94080
| | - Herve Lebrec
- Amgen Research, Inc, South San Francisco, California 94080
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29
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Železnjak J, Lisnić VJ, Popović B, Lisnić B, Babić M, Halenius A, L'Hernault A, Roviš TL, Hengel H, Erhard F, Redwood AJ, Vidal SM, Dölken L, Krmpotić A, Jonjić S. The complex of MCMV proteins and MHC class I evades NK cell control and drives the evolution of virus-specific activating Ly49 receptors. J Exp Med 2019; 216:1809-1827. [PMID: 31142589 PMCID: PMC6683999 DOI: 10.1084/jem.20182213] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 04/04/2019] [Accepted: 05/07/2019] [Indexed: 11/05/2022] Open
Abstract
Železnjak et al. demonstrate that two MCMV-encoded proteins interact with MHC I molecules, forming an altered-self complex that prevents missing self recognition by increasing specificity for inhibitory Ly49 receptors. This led to the evolution of CMV-specific activating Ly49s. CMVs efficiently target MHC I molecules to avoid recognition by cytotoxic T cells. However, the lack of MHC I on the cell surface renders the infected cell susceptible to NK cell killing upon missing self recognition. To counter this, mouse CMV (MCMV) rescues some MHC I molecules to engage inhibitory Ly49 receptors. Here we identify a new viral protein, MATp1, that is essential for MHC I surface rescue. Rescued altered-self MHC I molecules show increased affinity to inhibitory Ly49 receptors, resulting in inhibition of NK cells despite substantially reduced MHC I surface levels. This enables the virus to evade recognition by licensed NK cells. During evolution, this novel viral immune evasion mechanism could have prompted the development of activating NK cell receptors that are specific for MATp1-modified altered-self MHC I molecules. Our study solves a long-standing conundrum of how MCMV avoids recognition by NK cells, unravels a fundamental new viral immune evasion mechanism, and demonstrates how this forced the evolution of virus-specific activating MHC I–restricted Ly49 receptors.
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Affiliation(s)
- Jelena Železnjak
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia.,Center for Proteomics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Vanda Juranić Lisnić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia.,Center for Proteomics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Branka Popović
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Berislav Lisnić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia.,Center for Proteomics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Marina Babić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia.,Innate Immunity, German Rheumatism Research Centre, a Leibniz Institute, Berlin, Germany
| | - Anne Halenius
- Institute of Virology, Medical Center University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Anne L'Hernault
- Precision Medicine and Genomics, Innovative Medicines and Early Development Biotech Unit, AstraZeneca, Cambridge, UK
| | - Tihana Lenac Roviš
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia.,Center for Proteomics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Hartmut Hengel
- Institute of Virology, Medical Center University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Florian Erhard
- Institute of Virology and Immunobiology, Julius Maximilian University of Würzburg, Würzburg, Germany
| | - Alec J Redwood
- Institute for Respiratory Health, University of Western Australia, Western Australia, Australia
| | - Silvia M Vidal
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill Center for Complex Traits, McGill University, Montreal, Quebec, Canada
| | - Lars Dölken
- Institute of Virology and Immunobiology, Julius Maximilian University of Würzburg, Würzburg, Germany
| | - Astrid Krmpotić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Stipan Jonjić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia .,Center for Proteomics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
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30
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Biassoni R, Malnati MS. Human Natural Killer Receptors, Co-Receptors, and Their Ligands. ACTA ACUST UNITED AC 2019; 121:e47. [PMID: 30040219 DOI: 10.1002/cpim.47] [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] [Indexed: 12/19/2022]
Abstract
In the last 20 years, the study of human natural killer (NK) cells has moved from the first molecular characterizations of very few receptor molecules to the identification of a plethora of receptors displaying surprisingly divergent functions. We have contributed to the description of inhibitory receptors and their signaling pathways, important in fine regulation in many cell types, but unknown until their discovery in the NK cells. Inhibitory function is central to regulating NK-mediated cytolysis, with different molecular structures evolving during speciation to assure its persistence. More recently, it has become possible to characterize the NK triggering receptors mediating natural cytotoxicity, unveiling the existence of a network of cellular interactions between effectors of both natural and adaptive immunity. This unit reviews the contemporary history of molecular studies of receptors and ligands involved in NK cell function, characterizing the ligands of the triggering receptor and the mechanisms for finely regulating their expression in pathogen-infected or tumor cells. © 2018 by John Wiley & Sons, Inc.
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Affiliation(s)
- Roberto Biassoni
- IRCCS Istituto Giannina Gaslini, Laboratory of Molecular Medicine, Genova, Italy
| | - Mauro S Malnati
- IRCCS Ospedale San Raffaele, Unit of Human Virology, Division of Immunology, Transplantation and Infectious Diseases, Milan, Italy
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31
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Wroblewski EE, Parham P, Guethlein LA. Two to Tango: Co-evolution of Hominid Natural Killer Cell Receptors and MHC. Front Immunol 2019; 10:177. [PMID: 30837985 PMCID: PMC6389700 DOI: 10.3389/fimmu.2019.00177] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 01/21/2019] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cells have diverse roles in hominid immunity and reproduction. Modulating these functions are the interactions between major histocompatibility complex (MHC) class I molecules that are ligands for two NK cell surface receptor types. Diverse killer cell immunoglobulin-like receptors (KIR) bind specific motifs encoded within the polymorphic MHC class I cell surface glycoproteins, while, in more conserved interactions, CD94:NKG2A receptors recognize MHC-E with bound peptides derived from MHC class I leader sequences. The hominid lineage presents a choreographed co-evolution of KIR with their MHC class I ligands. MHC-A, -B, and -C are present in all great apes with species-specific haplotypic variation in gene content. The Bw4 epitope recognized by lineage II KIR is restricted to MHC-B but also present on some gorilla and human MHC-A. Common to great apes, but rare in humans, are MHC-B possessing a C1 epitope recognized by lineage III KIR. MHC-C arose from duplication of MHC-B and is fixed in all great apes except orangutan, where it exists on approximately 50% of haplotypes and all allotypes are C1-bearing. Recent study showed that gorillas possess yet another intermediate MHC organization compared to humans. Like orangutans, but unlike the Pan-Homo species, duplication of MHC-B occurred. However, MHC-C is fixed, and the MHC-C C2 epitope (absent in orangutans) emerges. The evolution of MHC-C drove expansion of its cognate lineage III KIR. Recently, position −21 of the MHC-B leader sequence has been shown to be critical in determining NK cell educational outcome. In humans, methionine (−21M) results in CD94:NKG2A-focused education whereas threonine (−21T) produces KIR-focused education. This is another dynamic position among hominids. Orangutans have exclusively −21M, consistent with their intermediate stage in lineage III KIR-focused evolution. Gorillas have both −21M and −21T, like humans, but they are unequally encoded by their duplicated B genes. Chimpanzees have near-fixed −21T, indicative of KIR-focused NK education. Harmonious with this observation, chimpanzee KIR exhibit strong binding and, compared to humans, smaller differences between binding levels of activating and inhibitory KIR. Consistent between these MHC-NK cell receptor systems over the course of hominid evolution is the evolution of polymorphism favoring the more novel and dynamic KIR system.
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Affiliation(s)
- Emily E Wroblewski
- Department of Anthropology, Washington University, St. Louis, MO, United States
| | - Peter Parham
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, United States
| | - Lisbeth A Guethlein
- Departments of Structural Biology and Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, United States
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32
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Mace EM, Orange JS. Emerging insights into human health and NK cell biology from the study of NK cell deficiencies. Immunol Rev 2019; 287:202-225. [PMID: 30565241 PMCID: PMC6310041 DOI: 10.1111/imr.12725] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 09/28/2018] [Indexed: 12/24/2022]
Abstract
Human NK cells are innate immune effectors that play a critical roles in the control of viral infection and malignancy. The importance of their homeostasis and function can be demonstrated by the study of patients with primary immunodeficiencies (PIDs), which are part of the family of diseases known as inborn defects of immunity. While NK cells are affected in many PIDs in ways that may contribute to a patient's clinical phenotype, a small number of PIDs have an NK cell abnormality as their major immunological defect. These PIDs can be collectively referred to as NK cell deficiency (NKD) disorders and include effects upon NK cell numbers, subsets, and/or functions. The clinical impact of NKD can be severe including fatal viral infection, with particular susceptibility to herpesviral infections, such as cytomegalovirus, varicella zoster virus, and Epstein-Barr virus. While NKD is rare, studies of these diseases are important for defining specific requirements for human NK cell development and homeostasis. New themes in NK cell biology are emerging through the study of both known and novel NKD, particularly those affecting cell cycle and DNA damage repair, as well as broader PIDs having substantive impact upon NK cells. In addition, the discovery of NKD that affects other innate lymphoid cell (ILC) subsets opens new doors for better understanding the relationship between conventional NK cells and other ILC subsets. Here, we describe the biology underlying human NKD, particularly in the context of new insights into innate immune cell function, including a discussion of recently described NKD with accompanying effects on ILC subsets. Given the impact of these disorders upon human immunity with a common focus upon NK cells, the unifying message of a critical role for NK cells in human host defense singularly emerges.
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Affiliation(s)
- Emily M Mace
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York
| | - Jordan S Orange
- Department of Pediatrics, Columbia University Irving Medical Center, New York, New York
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Mayassi T, Jabri B. Human intraepithelial lymphocytes. Mucosal Immunol 2018; 11:1281-1289. [PMID: 29674648 PMCID: PMC6178824 DOI: 10.1038/s41385-018-0016-5] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/02/2018] [Accepted: 02/03/2018] [Indexed: 02/04/2023]
Abstract
The location of intraepithelial lymphocytes (IEL) between epithelial cells, their effector memory, cytolytic and inflammatory phenotype positions them to kill infected epithelial cells and protect the intestine against pathogens. Human TCRαβ+CD8αβ+ IEL have the dual capacity to recognize modified self via natural killer (NK) receptors (autoreactivity) as well as foreign antigen via the T cell receptor (TCR), which is accomplished in mouse by two cell subsets, the naturally occurring TCRαβ+CD8αα+ and adaptively induced TCRαβ+CD8αβ+ IEL subsets, respectively. The private/oligoclonal nature of the TCR repertoire of both human and mouse IEL suggests local environmental factors dictate the specificity of IEL responses. The line between sensing of foreign antigens and autoreactivity is blurred for IEL in celiac disease, where recognition of stress ligands by induced activating NK receptors in conjunction with inflammatory signals such as IL-15 can result in low-affinity TCR/non-cognate antigen and NK receptor/stress ligand interactions triggering destruction of intestinal epithelial cells.
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Affiliation(s)
- Toufic Mayassi
- Department of Medicine, University of Chicago, Chicago, USA
- Committee on Immunology, University of Chicago, Chicago, USA
| | - Bana Jabri
- Department of Medicine, University of Chicago, Chicago, USA.
- Committee on Immunology, University of Chicago, Chicago, USA.
- Department of Pathology, University of Chicago, Chicago, USA.
- Department of Pediatrics, University of Chicago, Chicago, USA.
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34
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Dai KZ, Ryan JC, Naper C, Vaage JT. Identification of MHC Class Ib Ligands for Stimulatory and Inhibitory Ly49 Receptors and Induction of Potent NK Cell Alloresponses in Rats. THE JOURNAL OF IMMUNOLOGY 2018. [PMID: 29531166 DOI: 10.4049/jimmunol.1701464] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Early studies indicate that rats may have a repertoire of MHC class Ib-reactive Ly49 stimulatory receptors capable of mounting memory-like NK cell alloresponses. In this article, we provide molecular and functional evidence for this assumption. Pairs of Ly49 receptors with sequence similarities in the lectin-like domains, but with opposing signaling functions, showed specificity for ligands with class Ia-like structural features encoded from the first telomeric MHC class Ib gene cluster, RT1-CE, which is syntenic with the H2-D/H2-L/H2-Q cluster in mice. The activating Ly49s4 receptor and its inhibitory counterparts, Ly49i4 and Ly49i3, reacted with all allelic variants of RT1-U, whereas Ly49s5 and Ly49i5 were specific for RT1-Eu NK cell cytolytic responses were predictably activated and inhibited, and potent in vivo NK alloresponses were induced by repeated MHC class Ib alloimmunizations. Additional Ly49-class Ib interactions, including RT1-Cl with the Ly49s4/Ly49i4/Ly49i3 group of receptors, were characterized using overexpressed receptor/ligand pairs, in vitro functional assays, and limited mutational analyses. Obvious, as well as subtle, Ly49-class Ib interactions led to ligand-induced receptor calibration and NK subset expansions in vivo. Together, these studies suggest that in vivo NK alloresponses are controlled by pleomorphic Ly49-class Ib interactions, some of which may not be easily detectable in vitro.
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Affiliation(s)
- Ke-Zheng Dai
- Department of Immunology, Oslo University Hospital, 0424 Oslo, Norway
| | - James C Ryan
- Department of Medicine, Veterans Affairs Medical Center, University of California, San Francisco, San Francisco, CA 94121; and
| | - Christian Naper
- Department of Immunology, Oslo University Hospital, 0424 Oslo, Norway
| | - John T Vaage
- Department of Immunology, Oslo University Hospital, 0424 Oslo, Norway; .,Department of Immunology, University of Oslo, 0424 Oslo, Norway
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35
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Parham P, Guethlein LA. Genetics of Natural Killer Cells in Human Health, Disease, and Survival. Annu Rev Immunol 2018; 36:519-548. [PMID: 29394121 DOI: 10.1146/annurev-immunol-042617-053149] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Natural killer (NK) cells have vital functions in human immunity and reproduction. In the innate and adaptive immune responses to infection, particularly by viruses, NK cells respond by secreting inflammatory cytokines and killing infected cells. In reproduction, NK cells are critical for genesis of the placenta, the organ that controls the supply of oxygen and nutrients to the growing fetus. Controlling NK cell functions are interactions of HLA class I with inhibitory NK cell receptors. First evolved was the conserved interaction of HLA-E with CD94:NKG2A; later established were diverse interactions of HLA-A, -B, and -C with killer cell immunoglobulin-like receptors. Characterizing the latter interactions is rapid evolution, which distinguishes human populations and all species of higher primate. Driving this evolution are the different and competing selections imposed by pathogens on NK cell-mediated immunity and by the constraints of human reproduction on NK cell-mediated placentation. Promoting rapid evolution is independent segregation of polymorphic receptors and ligands throughout human populations.
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Affiliation(s)
- Peter Parham
- Department of Structural Biology and Department of Microbiology and Immunology, School of Medicine, Stanford University, Stanford, California 94305, USA; ,
| | - Lisbeth A Guethlein
- Department of Structural Biology and Department of Microbiology and Immunology, School of Medicine, Stanford University, Stanford, California 94305, USA; ,
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36
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Identification of novel polymorphisms and two distinct haplotype structures in dog leukocyte antigen class I genes: DLA-88, DLA-12 and DLA-64. Immunogenetics 2017; 70:237-255. [DOI: 10.1007/s00251-017-1031-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 09/19/2017] [Indexed: 12/14/2022]
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37
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Harms RZ, Creer AJ, Lorenzo-Arteaga KM, Ostlund KR, Sarvetnick NE. Interleukin (IL)-18 Binding Protein Deficiency Disrupts Natural Killer Cell Maturation and Diminishes Circulating IL-18. Front Immunol 2017; 8:1020. [PMID: 28900426 PMCID: PMC5581878 DOI: 10.3389/fimmu.2017.01020] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 08/08/2017] [Indexed: 01/24/2023] Open
Abstract
The cytokine interleukin (IL)-18 is a crucial amplifier of natural killer (NK) cell function. IL-18 signaling is regulated by the inhibitory effects of IL-18 binding protein (IL-18BP). Using mice deficient in IL-18BP (IL-18BPKO), we investigated the impact of mismanaged IL-18 signaling on NK cells. We found an overall reduced abundance of splenic NK cells in the absence of IL-18BP. Closer examination of NK cell subsets in spleen and bone marrow using CD27 and CD11b expression revealed that immature NK cells were increased in abundance, while the mature population of NK cells was reduced. Also, NK cells were polarized to greater production of TNF-α, while dedicated IFN-γ producers were reduced. A novel subset of IL-18 receptor α- NK cells contributed to the expansion of immature NK cells in IL-18BPKO mice. Splenocytes cultured with IL-18 resulted in alterations similar to those observed in IL-18BP deficiency. NK cell changes were associated with significantly reduced levels of circulating plasma IL-18. However, IL-18BPKO mice exhibited normal weight gain and responded to LPS challenge with a >10-fold increase in IFN-γ compared to wild type. Finally, we identified that the source of splenic IL-18BP was among dendritic cells/macrophage localized to the T cell-rich regions of the spleen. Our results demonstrate that IL-18BP is required for normal NK cell abundance and function and also contributes to maintaining steady-state levels of circulating IL-18. Thus, IL-18BP appears to have functions suggestive of a carrier protein, not just an inhibitor.
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Affiliation(s)
- Robert Z. Harms
- Department of Surgery-Transplant, University of Nebraska Medical Center, Omaha, NE, United States
| | - Austin J. Creer
- Department of Surgery-Transplant, University of Nebraska Medical Center, Omaha, NE, United States
| | | | - Katie R. Ostlund
- Department of Surgery-Transplant, University of Nebraska Medical Center, Omaha, NE, United States
| | - Nora E. Sarvetnick
- Department of Surgery-Transplant, University of Nebraska Medical Center, Omaha, NE, United States
- Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, United States
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38
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Gröschel C, Hübscher D, Nolte J, Monecke S, Sasse A, Elsner L, Paulus W, Trenkwalder C, Polić B, Mansouri A, Guan K, Dressel R. Efficient Killing of Murine Pluripotent Stem Cells by Natural Killer (NK) Cells Requires Activation by Cytokines and Partly Depends on the Activating NK Receptor NKG2D. Front Immunol 2017; 8:870. [PMID: 28890717 PMCID: PMC5582315 DOI: 10.3389/fimmu.2017.00870] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 07/10/2017] [Indexed: 12/14/2022] Open
Abstract
Natural killer (NK) cells play an important role as cytotoxic effector cells, which scan the organism for infected or tumorigenic cells. Conflicting data have been published whether NK cells can also kill allogeneic or even autologous pluripotent stem cells (PSCs) and which receptors are involved. A clarification of this question is relevant since an activity of NK cells against PSCs could reduce the risk of teratoma growth after transplantation of PSC-derived grafts. Therefore, the hypothesis has been tested that the activity of NK cells against PSCs depends on cytokine activation and specifically on the activating NK receptor NKG2D. It is shown that a subcutaneous injection of autologous iPSCs failed to activate NK cells against these iPSCs and can give rise to teratomas. In agreement with this result, several PSC lines, including two iPSC, two embryonic stem cell (ESC), and two so-called multipotent adult germline stem cell (maGSC) lines, were largely resistant against resting NK cells although differences in killing were found at low level. All PSC lines were killed by interleukin (IL)-2-activated NK cells, and maGSCs were better killed than the other PSC types. The PSCs expressed ligands of the activating NK receptor NKG2D and NKG2D-deficient NK cells from Klrk1-/- mice were impaired in their cytotoxic activity against PSCs. The low-cytotoxic activity of resting NK cells was almost completely dependent on NKG2D. The cytotoxic activity of IL-2-activated NKG2D-deficient NK cells against PSCs was reduced, indicating that also other activating receptors on cytokine-activated NK cells must be engaged by ligands on PSCs. Thus, NKG2D is an important activating receptor involved in killing of murine PSCs. However, NK cells need to be activated by cytokines before they efficiently target PSCs and then also other NK receptors become relevant. These features of NK cells might be relevant for transplantation of PSC-derived grafts since NK cells have the capability to kill undifferentiated cells, which might be present in grafts in trace amounts.
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Affiliation(s)
- Carina Gröschel
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany.,DZHK (German Center for Cardiovascular Research), Göttingen, Germany
| | - Daniela Hübscher
- DZHK (German Center for Cardiovascular Research), Göttingen, Germany.,Department of Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany
| | - Jessica Nolte
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Sebastian Monecke
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany.,DZHK (German Center for Cardiovascular Research), Göttingen, Germany
| | - André Sasse
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany
| | - Leslie Elsner
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany
| | - Walter Paulus
- Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany
| | | | - Bojan Polić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Ahmed Mansouri
- Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen, Germany.,Department of Molecular Cell Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Kaomei Guan
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Göttingen, Germany.,Institute of Pharmacology and Toxicology, Technische Universität Dresden, Dresden, Germany
| | - Ralf Dressel
- Institute of Cellular and Molecular Immunology, University Medical Center Göttingen, Göttingen, Germany.,DZHK (German Center for Cardiovascular Research), Göttingen, Germany
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39
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Wcisel DJ, Ota T, Litman GW, Yoder JA. Spotted Gar and the Evolution of Innate Immune Receptors. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2017; 328:666-684. [PMID: 28544607 DOI: 10.1002/jez.b.22738] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/23/2017] [Accepted: 02/27/2017] [Indexed: 01/02/2023]
Abstract
The resolution of the gar genome affords an opportunity to examine the diversification and functional specialization of immune effector molecules at a distant and potentially informative point in phylogenetic development. Although innate immunity is effected by a particularly large number of different families of molecules, the focus here is to provide detailed characterization of several families of innate receptors that are encoded in large multigene families, for which orthologous forms can be identified in other species of bony fish but not in other vertebrate groups as well as those for which orthologs are present in other vertebrate species. The results indicate that although teleost fish and the gar, as a holostean reference species, share gene families thought previously to be restricted to the teleost fish, the manner in which the members of the multigene families of innate immune receptors have undergone diversification is different in these two major phylogenetic radiations. It appears that both the total genome duplication and different patterns of genetic selection have influenced the derivation and stabilization of innate immune genes in a substantial manner during the course of vertebrate evolution.
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Affiliation(s)
- Dustin J Wcisel
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Tatsuya Ota
- Department of Evolutionary Studies of Biosystems, SOKENDAI (The Graduate University for Advanced Studies), Hayama, Japan
| | - Gary W Litman
- Department of Pediatrics, University of South Florida Morsani College of Medicine, St. Petersburg, Florida, USA
| | - Jeffrey A Yoder
- Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, North Carolina, USA.,Comparative Medicine Institute, North Carolina State University, Raleigh, North Carolina.,Center for Human Health and the Environment, North Carolina State University, Raleigh, North Carolina, USA
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40
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Mayes K, Elsayed Z, Alhazmi A, Waters M, Alkhatib SG, Roberts M, Song C, Peterson K, Chan V, Ailaney N, Malapati P, Blevins T, Lisnić B, Dumur CI, Landry JW. BPTF inhibits NK cell activity and the abundance of natural cytotoxicity receptor co-ligands. Oncotarget 2017; 8:64344-64357. [PMID: 28969075 PMCID: PMC5610007 DOI: 10.18632/oncotarget.17834] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/26/2017] [Indexed: 11/25/2022] Open
Abstract
Using syngeneic BALB/c mouse breast cancer models, we show that the chromatin remodeling subunit bromodomain PHD finger transcription factor (BPTF) suppresses natural killer (NK) cell antitumor activity in the tumor microenvironment (TME). In culture, BPTF suppresses direct natural cytotoxicity receptor (NCR) mediated NK cell cytolytic activity to mouse and human cancer cell lines, demonstrating conserved functions. Blocking mouse NCR1 in vivo rescues BPTF KD tumor weights, demonstrating its importance for the control of tumor growth. We discovered that BPTF occupies heparanase (Hpse) regulatory elements, activating its expression. Increased heparanase activity results in reduced cell surface abundance of the NCR co-ligands: heparan sulfate proteoglycans (HSPGs). Using gain and loss of function approaches we show that elevated heparanase levels suppress NK cell cytolytic activity to tumor cells in culture. These results suggest that BPTF activates heparanase expression, which in turn reduces cell surface HSPGs and NCR co-ligands, inhibiting NK cell activity. Furthermore, gene expression data from human breast cancer tumors shows that elevated BPTF expression correlates with reduced antitumor immune cell signatures, supporting conserved roles for BPTF in suppressing antitumor immunity. Conditional BPTF depletion in established mouse breast tumors enhances antitumor immunity, suggesting that inhibiting BPTF could provide a novel immunotherapy.
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Affiliation(s)
- Kimberly Mayes
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Zeinab Elsayed
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Aiman Alhazmi
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Michael Waters
- The Department of Biochemistry, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Suehyb G Alkhatib
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Mark Roberts
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Carolyn Song
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Kristen Peterson
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Vivian Chan
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Nikhil Ailaney
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Pumoli Malapati
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Tana Blevins
- The Department of Pathology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Berislav Lisnić
- The Center for Proteomics and Department for Histology and Embryology, University of Rijeka, Faculty of Medicine, 51000 Rijeka, Croatia
| | - Catherine I Dumur
- The Department of Pathology, Virginia Commonwealth University, Richmond, Virginia 23298, USA
| | - Joseph W Landry
- The Department of Human and Molecular Genetics, Virginia Institute of Molecular Medicine, Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, USA
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41
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The comparative immunology of wild and laboratory mice, Mus musculus domesticus. Nat Commun 2017; 8:14811. [PMID: 28466840 PMCID: PMC5418598 DOI: 10.1038/ncomms14811] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 01/31/2017] [Indexed: 01/01/2023] Open
Abstract
The laboratory mouse is the workhorse of immunology, used as a model of mammalian immune function, but how well immune responses of laboratory mice reflect those of free-living animals is unknown. Here we comprehensively characterize serological, cellular and functional immune parameters of wild mice and compare them with laboratory mice, finding that wild mouse cellular immune systems are, comparatively, in a highly activated (primed) state. Associations between immune parameters and infection suggest that high level pathogen exposure drives this activation. Moreover, wild mice have a population of highly activated myeloid cells not present in laboratory mice. By contrast, in vitro cytokine responses to pathogen-associated ligands are generally lower in cells from wild mice, probably reflecting the importance of maintaining immune homeostasis in the face of intense antigenic challenge in the wild. These data provide a comprehensive basis for validating (or not) laboratory mice as a useful and relevant immunological model system.
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42
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The Development and Diversity of ILCs, NK Cells and Their Relevance in Health and Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1024:225-244. [PMID: 28921473 DOI: 10.1007/978-981-10-5987-2_11] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Next to T and B cells, natural killer (NK) cells are the third largest lymphocyte population. They are recently re-categorized as innate lymphocytes (ILCs), which also include ILC1, ILC2, ILC3, and the lymphoid tissue inducer (LTi) cells. Both NK cells and ILC1 cells are designated as group 1 ILCs because they secrete interferon-γ (IFN-γ) and tumor necrosis factor (TNF). However, in contrast to ILC1 and all other ILCs, NK cells possess potent cytolytic functions that resemble cytotoxic T lymphocytes (CTL). In addition, NK cells express, in a stochastic manner, an array of germ line-encoded activating and inhibitory receptors that recognize the polymorphic regions of major histocompatibility class I (MHC-I) molecules and self-proteins. Recognition of self renders NK cell tolerance to self-healthy tissues, but fail to recognize self ('missing-self') leads to activation to neoplastic transformation and infections of certain viruses. In this chapter, we will summarize the development of NK cells in the context of ILCs, describe the diversity of phenotype and function in blood and tissues, and discuss their involvement in health and diseases in humans.
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43
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Béziat V, Hilton HG, Norman PJ, Traherne JA. Deciphering the killer-cell immunoglobulin-like receptor system at super-resolution for natural killer and T-cell biology. Immunology 2016; 150:248-264. [PMID: 27779741 PMCID: PMC5290243 DOI: 10.1111/imm.12684] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/12/2016] [Accepted: 10/17/2016] [Indexed: 12/13/2022] Open
Abstract
Killer-cell immunoglobulin-like receptors (KIRs) are components of two fundamental biological systems essential for human health and survival. First, they contribute to host immune responses, both innate and adaptive, through their expression by natural killer cells and T cells. Second, KIR play a key role in regulating placentation, and hence reproductive success. Analogous to the diversity of their human leucocyte antigen class I ligands, KIR are extremely polymorphic. In this review, we describe recent developments, fuelled by methodological advances, that are helping to decipher the KIR system in terms of haplotypes, polymorphisms, expression patterns and their ligand interactions. These developments are delivering deeper insight into the relevance of KIR in immune system function, evolution and disease.
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Affiliation(s)
- Vivien Béziat
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France.,Imagine Institute, Paris Descartes University, Paris, France
| | - Hugo G Hilton
- Departments of Structural Biology and Microbiology & Immunology, Stanford University, Stanford, CA, USA
| | - Paul J Norman
- Departments of Structural Biology and Microbiology & Immunology, Stanford University, Stanford, CA, USA
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44
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Abstract
Mice and humans branched from a common ancestor approximately 80 million years ago. Despite this, mice are routinely utilized as animal models of human disease and in drug development because they are inexpensive, easy to handle, and relatively straightforward to genetically manipulate. While this has led to breakthroughs in the understanding of genotype-phenotype relationships and in the identification of therapeutic targets, translation of beneficial responses to therapeutics from mice to humans has not always been successful. In a large part, these differences may be attributed to variations in the alignment of protein expression and signaling in the immune systems between mice and humans. Well-established inbred strains of "The Laboratory Mouse" vary in their immune response patterns as a result of genetic mutations and polymorphisms arising from intentional selection for research relevant traits, and even closely related substrains vary in their immune response patterns as a result of genetic mutations and polymorphisms arising from genetic drift. This article reviews some of the differences between the mouse and human immune system and between inbred mouse strains and shares examples of how these differences can impact the usefulness of mouse models of disease.
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Affiliation(s)
- Rani S Sellers
- 1 Drug Safety Research and Development, Pfizer Inc., Pearl River, NY, USA
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