1
|
Halder RC, Tran C, Prasad P, Wang J, Nallapothula D, Ishikawa T, Wang M, Zajonc DM, Singh RR. Self-glycerophospholipids activate murine phospholipid-reactive T cells and inhibit iNKT cell activation by competing with ligands for CD1d loading. Eur J Immunol 2018; 49:242-254. [PMID: 30508304 DOI: 10.1002/eji.201847717] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 10/15/2018] [Accepted: 11/27/2018] [Indexed: 01/12/2023]
Abstract
Glycosphingolipids and glycerophospholipids bind CD1d. Glycosphingolipid-reactive invariant NKT-cells (iNKT) exhibit myriad immune effects, however, little is known about the functions of phospholipid-reactive T cells (PLT). We report that the normal mouse immune repertoire contains αβ T cells, which recognize self-glycerophospholipids such as phosphatidic acid (PA) in a CD1d-restricted manner and don't cross-react with iNKT-cell ligands. PA bound to CD1d in the absence of lipid transfer proteins. Upon in vivo priming, PA induced an expansion and activation of T cells in Ag-specific manner. Crystal structure of the CD1d:PA complex revealed that the ligand is centrally located in the CD1d-binding groove opening for TCR recognition. Moreover, the increased flexibility of the two acyl chains in diacylglycerol ligands and a less stringent-binding orientation for glycerophospholipids as compared with the bindings of glycosphingolipids may allow glycerophospholipids to readily occupy CD1d. Indeed, PA competed with α-galactosylceramide to load onto CD1d, leading to reduced expression of CD1d:α-galactosylceramide complexes on the surface of dendritic cells. Consistently, glycerophospholipids reduced iNKT-cell proliferation, expansion, and cytokine production in vitro and in vivo. Such superior ability of self-glycerophospholipids to compete with iNKT-cell ligands to occupy CD1d may help maintain homeostasis between the diverse subsets of lipid-reactive T cells, with important pathogenetic and therapeutic implications.
Collapse
Affiliation(s)
- Ramesh Chandra Halder
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Cynthia Tran
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Priti Prasad
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA.,Molecular Toxicology Interdepartmental Program, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Jing Wang
- Division of Immune Regulation, La Jolla Institute for Immunology, La Jolla, CA, USA
| | - Dhiraj Nallapothula
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Tatsuya Ishikawa
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Meiying Wang
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| | - Dirk M Zajonc
- Division of Immune Regulation, La Jolla Institute for Immunology, La Jolla, CA, USA.,Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Ram Raj Singh
- Autoimmunity and Tolerance Laboratory, Division of Rheumatology, Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA.,Molecular Toxicology Interdepartmental Program, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA.,Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA.,Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA, USA
| |
Collapse
|
2
|
Manzo E, Cutignano A, Pagano D, Gallo C, Barra G, Nuzzo G, Sansone C, Ianora A, Urbanek K, Fenoglio D, Ferrera F, Bernardi C, Parodi A, Pasquale G, Leonardi A, Filaci G, De Palma R, Fontana A. A new marine-derived sulfoglycolipid triggers dendritic cell activation and immune adjuvant response. Sci Rep 2017; 7:6286. [PMID: 28740080 PMCID: PMC5524952 DOI: 10.1038/s41598-017-05969-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 06/06/2017] [Indexed: 12/30/2022] Open
Abstract
Dendritic Cells (DCs) recognize infectious non-self molecules and engage the adaptive immune system thereby initiating long lasting, antigen-specific responses. As such, the ability to activate DCs is considered a key tool to enhance the efficacy and quality of vaccination. Here we report a novel immunomodulatory sulfolipid named β-SQDG18 that prototypes a class of natural-derived glycolipids able to prime human DCs by a TLR2/TLR4-independent mechanism and trigger an efficient immune response in vivo. β-SQDG18 induces maturation of DC with the upregulation of MHC II molecules and co-stimulatory proteins (CD83, CD86), as well as pro-inflammatory cytokines (IL-12 and INF-γ). Mice immunized with OVA associated to β-SQDG18 (1:500) produced a titer of anti-OVA Ig comparable to traditional adjuvants. In an experimental model of melanoma, vaccination of C57BL/6 mice with β-SQDG18-adjuvanted hgp10 peptide elicited a protective response with a reduction in tumour growth and increase in survival.
Collapse
Affiliation(s)
- Emiliano Manzo
- Bio-Organic Chemistry Unit, CNR- Institute of Biomolecular Chemistry, Via Campi Flegrei 34, IT-80078, Pozzuoli, Napoli, Italy
| | - Adele Cutignano
- Bio-Organic Chemistry Unit, CNR- Institute of Biomolecular Chemistry, Via Campi Flegrei 34, IT-80078, Pozzuoli, Napoli, Italy
| | - Dario Pagano
- Bio-Organic Chemistry Unit, CNR- Institute of Biomolecular Chemistry, Via Campi Flegrei 34, IT-80078, Pozzuoli, Napoli, Italy
| | - Carmela Gallo
- Bio-Organic Chemistry Unit, CNR- Institute of Biomolecular Chemistry, Via Campi Flegrei 34, IT-80078, Pozzuoli, Napoli, Italy
| | - Giusi Barra
- University of Campania, Clinical Immunology and Allergology, Dept. of Internal and Experimental Clinic, c/o II Policlinico (Bd. 3), Via S. Pansini, 5, 80131, Napoli, Italy
| | - Genoveffa Nuzzo
- Bio-Organic Chemistry Unit, CNR- Institute of Biomolecular Chemistry, Via Campi Flegrei 34, IT-80078, Pozzuoli, Napoli, Italy
| | | | - Adrianna Ianora
- Stazione Zoologica "A. Dohrn", Villa Comunale, 80121, Napoli, Italy
| | - Konrad Urbanek
- University of Campania, Dept. of Experimental Medicine, c/o II Policlinico (Bd. 3), Via S. Pansini, 5, 80131, Napoli, Italy
| | - Daniela Fenoglio
- Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Francesca Ferrera
- Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Cinzia Bernardi
- Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Alessia Parodi
- Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Giuseppe Pasquale
- University of Campania, Clinical Immunology and Allergology, Dept. of Internal and Experimental Clinic, c/o II Policlinico (Bd. 3), Via S. Pansini, 5, 80131, Napoli, Italy
| | - Antonio Leonardi
- Univeristy of Naples "Federico II", Department of Molecular Medicine and Medical Biotechnology, c/o II Policlinico (Bd. 3), Via S. Pansini, 5, 80131, Napoli, Italy
| | - Gilberto Filaci
- Centre of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Raffaele De Palma
- University of Campania, Clinical Immunology and Allergology, Dept. of Internal and Experimental Clinic, c/o II Policlinico (Bd. 3), Via S. Pansini, 5, 80131, Napoli, Italy.
- Institute of Protein Biochemistry, via P. Castellino, 111, 80131, Napoli, Italy.
| | - Angelo Fontana
- Bio-Organic Chemistry Unit, CNR- Institute of Biomolecular Chemistry, Via Campi Flegrei 34, IT-80078, Pozzuoli, Napoli, Italy.
| |
Collapse
|
3
|
Divan A, Budd RC, Tobin RP, Newell-Rogers MK. γδ T Cells and dendritic cells in refractory Lyme arthritis. J Leukoc Biol 2015; 97:653-63. [PMID: 25605869 DOI: 10.1189/jlb.2ru0714-343rr] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Lyme disease is a multisystem infection transmitted by tick vectors with an incidence of up to 300,000 individuals/yr in the United States. The primary treatments are oral or i.v. antibiotics. Despite treatment, some individuals do not recover and have prolonged symptoms affecting multiple organs, including the nervous system and connective tissues. Inflammatory arthritis is a common symptom associated with Lyme pathology. In the past decades, γδ T cells have emerged as candidates that contribute to the transition from innate to adaptive responses. These cells are also differentially regulated within the synovia of patients affected by RLA. Here, we review and discuss potential cellular mechanisms involving γδ T cells and DCs in RLA. TLR signaling and antigen processing and presentation will be the key concepts that we review in aid of understanding the impact of γδ T cells in RLA.
Collapse
Affiliation(s)
- Ali Divan
- *Texas A&M Health Science, Temple, Texas, USA; and University of Vermont, Burlington, Vermont, USA
| | - Ralph C Budd
- *Texas A&M Health Science, Temple, Texas, USA; and University of Vermont, Burlington, Vermont, USA
| | - Richard P Tobin
- *Texas A&M Health Science, Temple, Texas, USA; and University of Vermont, Burlington, Vermont, USA
| | - M Karen Newell-Rogers
- *Texas A&M Health Science, Temple, Texas, USA; and University of Vermont, Burlington, Vermont, USA
| |
Collapse
|
4
|
Van Rhijn I, Ly D, Moody DB. CD1a, CD1b, and CD1c in immunity against mycobacteria. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013; 783:181-97. [PMID: 23468110 DOI: 10.1007/978-1-4614-6111-1_10] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The CD1 system is composed of five types of human CD1 proteins, CD1a, CD1b, CD1c, CD1d, and CD1e, and their mammalian orthologs. Each type of CD1 protein has a distinct antigen binding groove and shows differing patterns of expression within cells and in different tissues. Here we review the molecular mechanisms by which CD1a, CD1b, and CD1c capture distinct classes of self- and mycobacterial antigens. We discuss how CD1-restricted T cells participate in the immune response, emphasizing new evidence for mycobacterial recognition in vivo in human and non-human models.
Collapse
Affiliation(s)
- Ildiko Van Rhijn
- Division of Rheumatology, Harvard Medical School, Boston, MA, USA.
| | | | | |
Collapse
|
5
|
Scharf L, Li NS, Hawk AJ, Garzón D, Zhang T, Fox LM, Kazen AR, Shah S, Haddadian EJ, Gumperz JE, Saghatelian A, Faraldo-Gómez JD, Meredith SC, Piccirilli JA, Adams EJ. The 2.5 Å structure of CD1c in complex with a mycobacterial lipid reveals an open groove ideally suited for diverse antigen presentation. Immunity 2011; 33:853-62. [PMID: 21167756 DOI: 10.1016/j.immuni.2010.11.026] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 09/20/2010] [Accepted: 11/25/2010] [Indexed: 11/30/2022]
Abstract
CD1 molecules function to present lipid-based antigens to T cells. Here we present the crystal structure of CD1c at 2.5 Å resolution, in complex with the pathogenic Mycobacterium tuberculosis antigen mannosyl-β1-phosphomycoketide (MPM). CD1c accommodated MPM's methylated alkyl chain exclusively in the A' pocket, aided by a unique exit portal underneath the α1 helix. Most striking was an open F' pocket architecture lacking the closed cavity structure of other CD1 molecules, reminiscent of peptide binding grooves of classical major histocompatibility complex molecules. This feature, combined with tryptophan-fluorescence quenching during loading of a dodecameric lipopeptide antigen, provides a compelling model by which both the lipid and peptide moieties of the lipopeptide are involved in CD1c presentation of lipopeptides.
Collapse
Affiliation(s)
- Louise Scharf
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL 60637, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Yakimchuk K, Roura-Mir C, Magalhaes KG, de Jong A, Kasmar AG, Granter SR, Budd R, Steere A, Pena-Cruz V, Kirschning C, Cheng TY, Moody DB. Borrelia burgdorferi infection regulates CD1 expression in human cells and tissues via IL1-β. Eur J Immunol 2011; 41:694-705. [PMID: 21246541 DOI: 10.1002/eji.201040808] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 09/22/2010] [Accepted: 12/02/2010] [Indexed: 12/12/2022]
Abstract
The appearance of group 1 CD1 proteins (CD1a, CD1b and CD1c) on maturing myeloid DC is a key event that converts myeloid DC to effective lipid APC. Here, we show that Borrelia burgdorferi, the causative agent of Lyme disease, triggers appearance of group 1 CD1 proteins at high density on the surface of human myeloid DC during infection. Within human skin, CD1b and CD1c expression was low or absent prior to infection, but increased significantly after experimental infections and in erythema migrans lesions from Lyme disease patients. The induction of CD1 was initiated by borrelial lipids acting through TLR-2 within minutes, but required 3 days for maximum effect. The delay in CD1 protein appearance involved a multi-step process whereby TLR-2 stimulated cells release soluble factors, which are sufficient to transfer the CD1-inducing effect in trans to other cells. Analysis of these soluble factors identified IL-1β as a previously unknown pathway leading to group 1 CD1 protein function. This study establishes that upregulation of group 1 CD1 proteins is an early event in B. burgdorferi infection and suggests a stepwise mechanism whereby bacterial cell walls, TLR activation and cytokine release cause DC precursors to express group 1 CD1 proteins.
Collapse
Affiliation(s)
- Konstantin Yakimchuk
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
De Libero G, Mori L. How the immune system detects lipid antigens. Prog Lipid Res 2010; 49:120-7. [DOI: 10.1016/j.plipres.2009.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2009] [Revised: 10/19/2009] [Accepted: 10/20/2009] [Indexed: 10/20/2022]
|
8
|
Venkataswamy MM, Porcelli SA. Lipid and glycolipid antigens of CD1d-restricted natural killer T cells. Semin Immunol 2009; 22:68-78. [PMID: 19945296 DOI: 10.1016/j.smim.2009.10.003] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Accepted: 10/26/2009] [Indexed: 12/17/2022]
Abstract
In spite of their relatively limited antigen receptor repertoire, CD1d-restricted NKT cells recognize a surprisingly diverse range of lipid and glycolipid antigens. Recent studies of natural and synthetic CD1d-presented antigens provide an increasingly detailed picture of how the specific structural features of these lipids and glycolipids influence their ability to be presented to NKT cells and stimulate their diverse immunologic functions. Particularly for synthetic analogues of alpha-galactosylceramides which have been the focus of intense recent investigation, it is becoming clear that the design of glycolipid antigens with the ability to precisely control the specific immunologic activities of NKT cells is likely to be feasible. The emerging details of the mechanisms underlying the structure-activity relationship of NKT cell antigens will assist greatly in the design and production of immunomodulatory agents for the precise manipulation of NKT cells and the many other components of the immune system that they influence.
Collapse
Affiliation(s)
- Manjunatha M Venkataswamy
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | | |
Collapse
|
9
|
|
10
|
The crystal structure of avian CD1 reveals a smaller, more primordial antigen-binding pocket compared to mammalian CD1. Proc Natl Acad Sci U S A 2008; 105:17925-30. [PMID: 19004781 DOI: 10.1073/pnas.0809814105] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The molecular details of glycolipid presentation by CD1 antigen-presenting molecules are well studied in mammalian systems. However, little is known about how these non-classical MHC class I (MHCI) molecules diverged from the MHC locus to create a more complex, hydrophobic binding groove that binds lipids rather than peptides. To address this fundamental question, we have determined the crystal structure of an avian CD1 (chCD1-2) that shares common ancestry with mammalian CD1 from approximately 310 million years ago. The chCD1-2 antigen-binding site consists of a compact, narrow, central hydrophobic groove or pore rather than the more open, 2-pocket architecture observed in mammalian CD1s. Potential antigens then would be restricted in size to single-chain lipids or glycolipids. An endogenous ligand, possibly palmitic acid, serves to illuminate the mode and mechanism of ligand interaction with chCD1-2. The palmitate alkyl chain is inserted into the relatively shallow hydrophobic pore; its carboxyl group emerges at the receptor surface and is stabilized by electrostatic and hydrogen bond interactions with an arginine residue that is conserved in all known CD1 proteins. In addition, other novel features, such as an A' loop that interrupts and segments the normally long, continuous alpha1 helix, are unique to chCD1-2 and contribute to the unusually narrow binding groove, thereby limiting its size. Because birds and mammals share a common ancestor, but the rate of evolution is slower in birds than in mammals, the chCD1-2-binding groove probably represents a more primordial CD1-binding groove.
Collapse
|