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Borràs-Tudurí R, Alcaide A, Aspeslag S, Usero L, Serra C, Roura-Mir C, Elewaut D, Llebaria A. New Paradigm in NKT Cell Antigens: MCS-0208 (2-(Hydroxymethyl)phenylthio-phytoceramide) - an Aryl-Phytoceramide Compound with a Single Hydroxyl Group Stimulates NKT Cells. ChemMedChem 2021; 16:2491-2496. [PMID: 33821540 PMCID: PMC8453509 DOI: 10.1002/cmdc.202000992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/10/2021] [Indexed: 11/07/2022]
Abstract
Natural Killer T (NKT) cells play an important role in the immune response and can be activated by glycolipids presented by CD1d protein. We present MCS‐0208, an unprecedented arylthioether‐phytoceramide able to induce potent invariant NKT (iNKT) cell activation, notably when tested in human iNKT cells. This arylsphingolipid analog has a simple phenyl group containing a single hydroxyl substituent as a surrogate of the sugar ring. The phenylthioether structure contrasts with α‐galactosylceramide (1), the prototypical glycolipid used to induce iNKT cell stimulation, where the galactose 2’‐OH and 3’‐OH substituents are accepted as the minimal footprint and considered critical for NKT T cell receptor (TCR) recognition. A computational study supports the recognition of aromatic compound by the CD1d and TCR proteins as radically new structures for NKT cell stimulation.
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Affiliation(s)
- Roser Borràs-Tudurí
- Medicinal Chemistry and Synthesis (MCS) Laboratory, Institut de Química Avançada de Catalunya (IQAC) Consejo Superior de Investigaciones Científicas (CSIC), C/ Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Anna Alcaide
- Medicinal Chemistry and Synthesis (MCS) Laboratory, Institut de Química Avançada de Catalunya (IQAC) Consejo Superior de Investigaciones Científicas (CSIC), C/ Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Sandrine Aspeslag
- Unit for Molecular Immunology and Inflammation, VIB-Center for Inflammation Research, Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Lorena Usero
- Laboratori d'Immunologia Cel⋅lular Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona Bellaterra, 08193, Barcelona, Spain
| | - Carmen Serra
- Medicinal Chemistry and Synthesis (MCS) Laboratory, Institut de Química Avançada de Catalunya (IQAC) Consejo Superior de Investigaciones Científicas (CSIC), C/ Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Carme Roura-Mir
- Laboratori d'Immunologia Cel⋅lular Institut de Biotecnologia i Biomedicina, Universitat Autònoma de Barcelona Bellaterra, 08193, Barcelona, Spain
| | - Dirk Elewaut
- Unit for Molecular Immunology and Inflammation, VIB-Center for Inflammation Research, Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Amadeu Llebaria
- Medicinal Chemistry and Synthesis (MCS) Laboratory, Institut de Química Avançada de Catalunya (IQAC) Consejo Superior de Investigaciones Científicas (CSIC), C/ Jordi Girona 18-26, 08034, Barcelona, Spain
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2
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Morandi F, Yazdanifar M, Cocco C, Bertaina A, Airoldi I. Engineering the Bridge between Innate and Adaptive Immunity for Cancer Immunotherapy: Focus on γδ T and NK Cells. Cells 2020; 9:E1757. [PMID: 32707982 PMCID: PMC7464083 DOI: 10.3390/cells9081757] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/12/2020] [Accepted: 07/21/2020] [Indexed: 12/13/2022] Open
Abstract
Most studies on genetic engineering technologies for cancer immunotherapy based on allogeneic donors have focused on adaptive immunity. However, the main limitation of such approaches is that they can lead to severe graft-versus-host disease (GvHD). An alternative approach would bolster innate immunity by relying on the natural tropism of some subsets of the innate immune system, such as γδ T and natural killer (NK) cells, for the tumor microenvironment and their ability to kill in a major histocompatibility complex (MHC)-independent manner. γδ T and NK cells have the unique ability to bridge innate and adaptive immunity while responding to a broad range of tumors. Considering these properties, γδ T and NK cells represent ideal sources for developing allogeneic cell therapies. Recently, significant efforts have been made to exploit the intrinsic anti-tumor capacity of these cells for treating hematologic and solid malignancies using genetic engineering approaches such as chimeric antigen receptor (CAR) and T cell receptor (TCR). Here, we review over 30 studies on these two approaches that use γδ T and NK cells in adoptive cell therapy (ACT) for treating cancer. Based on those studies, we propose several promising strategies to optimize the clinical translation of these approaches.
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Affiliation(s)
- Fabio Morandi
- Stem Cell Laboratory and Cell Therapy Center, IRCCS Istituto Giannina Gaslini, Via G. Gaslini, 516147 Genova, Italy; (F.M.); (C.C.)
| | - Mahboubeh Yazdanifar
- Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA 94305, USA;
| | - Claudia Cocco
- Stem Cell Laboratory and Cell Therapy Center, IRCCS Istituto Giannina Gaslini, Via G. Gaslini, 516147 Genova, Italy; (F.M.); (C.C.)
| | - Alice Bertaina
- Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA 94305, USA;
| | - Irma Airoldi
- Stem Cell Laboratory and Cell Therapy Center, IRCCS Istituto Giannina Gaslini, Via G. Gaslini, 516147 Genova, Italy; (F.M.); (C.C.)
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Sánchez-Fernández EM, García-Moreno MI, Arroba AI, Aguilar-Diosdado M, Padrón JM, García-Hernández R, Gamarro F, Fustero S, Sánchez-Aparicio JE, Masgrau L, García Fernández JM, Ortiz Mellet C. Synthesis of polyfluoroalkyl sp 2-iminosugar glycolipids and evaluation of their immunomodulatory properties towards anti-tumor, anti-leishmanial and anti-inflammatory therapies. Eur J Med Chem 2019; 182:111604. [PMID: 31425910 DOI: 10.1016/j.ejmech.2019.111604] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/27/2019] [Accepted: 08/07/2019] [Indexed: 12/27/2022]
Abstract
Immunomodulatory glycolipids, among which α-galactosylceramide (KRN7000) is an iconic example, have shown strong therapeutic potential in a variety of conditions ranging from cancer and infection to autoimmune or neurodegenerative diseases. A main difficulty for those channels is that they often provoke a cytokine storm comprising both pro- and anti-inflammatory mediators that antagonize each other and negatively affect the immune response. The synthesis of analogues with narrower cytokine secretion-inducing capabilities is hampered by the intrinsic difficulty at controlling the stereochemical outcome in glycosidation reactions, particularly if targeting the α-anomer, which seriously hampers drug optimization strategies. Here we show that replacing the monosaccharide glycone by a sp2-iminosugar glycomimetic moiety allows accessing N-linked sp2-iminosugar glycolipids (sp2-IGLs) with total α-stereocontrol in a single step with no need of protecting groups or glycosidation promotors. The lipid tail has been then readily tailored by incorporating polyfluoroalkyl segments of varied lengths in view of favouring binding to the lipid binding site of the master p38 mitogen activated protein kinase (p38 MAPK), thereby polarizing the immune response in a cell-context dependent manner. The compounds have been evaluated for their antiproliferative, anti-leishmanial and anti-inflammatory activities in different cell assays. The size of the fluorous segment was found to be critical for the biological activity, probably by regulating the aggregation and membrane-crossing properties, whereas the hydroxylation profile (gluco or galacto-like) was less relevant. Biochemical and computational data further support a mechanism of action implying binding to the allosteric lipid binding site of p38 MAPK and subsequent activation of the noncanonical autophosphorylation route. The ensemble of results provide a proof of concept of the potential of sp2-IGLs as immunoregulators.
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Affiliation(s)
- Elena M Sánchez-Fernández
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Profesor García González 1, 41012, Seville, Spain.
| | - Ma Isabel García-Moreno
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Profesor García González 1, 41012, Seville, Spain
| | - Ana I Arroba
- Biomedical Research and Innovation Institute of Cádiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Av/ Ana de Viya 21, 11009, Cádiz, Spain; Research Unit, Jerez University Hospital, Carretera Circunvalación s/n, 11407, Jerez de la Frontera, Spain.
| | - Manuel Aguilar-Diosdado
- Biomedical Research and Innovation Institute of Cádiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Av/ Ana de Viya 21, 11009, Cádiz, Spain; Research Unit, Jerez University Hospital, Carretera Circunvalación s/n, 11407, Jerez de la Frontera, Spain
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO AG), Centro de Investigaciones Biomédicas de Canarias (CIBICAN), Universidad de la Laguna, PO BOX 456, 38200, La Laguna, Spain
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina "López Neyra", IPBLN-CSIC, Parque Tecnológico de Ciencias de la Salud, 18016, Granada, Spain
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina "López Neyra", IPBLN-CSIC, Parque Tecnológico de Ciencias de la Salud, 18016, Granada, Spain
| | - Santos Fustero
- Department of Organic Chemistry, Universidad de Valencia, 46100, Burjassot, Spain
| | | | - Laura Masgrau
- Department of Chemistry, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - José Manuel García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, C/ Américo Vespucio 49, Isla de la Cartuja, 41092, Sevilla, Spain
| | - Carmen Ortiz Mellet
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Profesor García González 1, 41012, Seville, Spain.
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Fereidouni M, Derakhshani A, Exley MA. iNKT cells and hematopoietic stem cell transplantation: Two-phase activation of iNKT cells may improve outcome. Clin Immunol 2019; 207:43-48. [PMID: 31128279 DOI: 10.1016/j.clim.2019.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 01/22/2023]
Abstract
Invariant natural killer T cells (iNKT) produce large amounts of different cytokines which can influence differentiation, polarization and activation of immune cells, particularly NK and T cells. iNKT have been shown to suppress GvHD and promote anti-tumor and anti-pathogen immunity. There are highly specific and safe synthetic ligands such as alpha-galactosylceramide (α-GalCer) and C20:2 which activate iNKT cells toward relatively Th1 and Th2 pathways, respectively. Bone marrow transplantation (BMT) or 'hematopoietic stem cell transplantation' (HSCT) is effective for leukemia and lymphoma through 'graft-versus-leukemia' (GVL) immunity. However, frequent serious complications include graft-versus-host-disease (GVHD), opportunistic infections and relapse. Both GVHD and GVL are mediated by T cells. Manipulating iNKT by different lipid analogues in early and late phases after transplantation may suppress GVHD and graft rejection and enhance GVL effect, as well as resistance to opportunistic infections and so, could be a novel and effective strategy for improving HSCT outcome.
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Affiliation(s)
- Mohammad Fereidouni
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran; Asthma, Allergy & Immunology Research Center, Birjand University of Medical Sciences, Birjand, Iran.
| | - Afshin Derakhshani
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran; Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran; Asthma, Allergy & Immunology Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Mark A Exley
- Division of Gastroenterology, Endoscopy, and Hepatology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA; Manchester Collaborative Centre for Inflammation Research, University of Manchester, UK.
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5
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Godfrey DI, Le Nours J, Andrews DM, Uldrich AP, Rossjohn J. Unconventional T Cell Targets for Cancer Immunotherapy. Immunity 2018; 48:453-473. [PMID: 29562195 DOI: 10.1016/j.immuni.2018.03.009] [Citation(s) in RCA: 205] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 03/01/2018] [Accepted: 03/02/2018] [Indexed: 02/07/2023]
Abstract
Most studies on the immunotherapeutic potential of T cells have focused on CD8 and CD4 T cells that recognize peptide antigens (Ag) presented by polymorphic major histocompatibility complex (MHC) class I and MHC class II molecules, respectively. However, unconventional T cells, which interact with MHC class Ib and MHC-I like molecules, are also implicated in tumor immunity, although their role therein is unclear. These include unconventional T cells targeting MHC class Ib molecules such as HLA-E and its murine ortholog Qa-1b, natural killer T (NKT) cells, mucosal associated invariant T (MAIT) cells, and γδ T cells. Here, we review the current understanding of the roles of these unconventional T cells in tumor immunity and discuss why further studies into the immunotherapeutic potential of these cells is warranted.
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Affiliation(s)
- Dale I Godfrey
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Victoria 3010, Australia; ARC Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Jérôme Le Nours
- Infection and Immunity Program and The Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia; ARC Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia
| | - Daniel M Andrews
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Adam P Uldrich
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Victoria 3010, Australia; ARC Centre of Excellence in Advanced Molecular Imaging, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Jamie Rossjohn
- Infection and Immunity Program and The Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria 3800, Australia; ARC Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia; Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK.
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6
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Antunes L, Duarte de Souza A, de Araújo P, Pinto L, Jones M, Stein R, Pitrez P. iNKT cells are increased in children with severe therapy-resistant asthma. Allergol Immunopathol (Madr) 2018; 46:175-180. [PMID: 29279262 DOI: 10.1016/j.aller.2017.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 05/19/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Invariant natural killer T (iNKT) cells play complex functions in the immune system, releasing both Th1 and Th2 cytokines. The role of iNKT cells in human asthma is still controversial and never described in severe therapy-resistant asthma in children. The objective of this work was to analyse iNKT frequency in peripheral blood of children with severe therapy-resistant asthma (STRA), compared to children with milder asthma and healthy controls. METHODS Children with asthma (n=136) (non-severe and STRA) from a referral centre and healthy controls (n=40) were recruited. Peripheral blood mononuclear cells were isolated, stained with anti-CD3 and anti-iNKT (Vα24Jα18), and analysed through flow cytometry. Atopic status was defined by measuring specific IgE in serum. Airway inflammation was assessed by induced sputum. RESULTS Children with asthma presented an increased frequency of CD3+iNKT+ cells (median 0.38% IQR 0.18-1.9), compared to healthy controls (median 0.26% IQR 0.10-0.43) (p=0.025). Children with STRA also showed an increased frequency of iNKT cells (1.5% IQR 1.05-2.73) compared to healthy controls and non-severe asthmatic children (0.35% IQR 0.15-1.6; p=0.002). The frequency of iNKT cells was not different between atopic and non-atopic children. In addition, iNKT cells were not associated with any inflammatory pattern of induced sputum studied. CONCLUSION Our data suggests that iNKT cells play a role in paediatric asthma, which is also associated with the severity of disease, but independent of the atopic status.
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7
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Zajonc DM. The CD1 family: serving lipid antigens to T cells since the Mesozoic era. Immunogenetics 2016; 68:561-76. [PMID: 27368414 DOI: 10.1007/s00251-016-0931-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 06/22/2016] [Indexed: 12/20/2022]
Abstract
Class I-like CD1 molecules are in a family of antigen-presenting molecules that bind lipids and lipopeptides, rather than peptides for immune surveillance by T cells. Since CD1 lacks the high degree of polymorphism found in their major histocompatibility complex (MHC) class I molecules, different species express different numbers of CD1 isotypes, likely to be able to present structurally diverse classes of lipid antigens. In this review, we will present a historical overview of the structures of the different human CD1 isotypes and also discuss species-specific adaptations of the lipid-binding groove. We will discuss how single amino acid changes alter the shape and volume of the CD1 binding groove, how these minor changes can give rise to different numbers of binding pockets, and how these pockets affect the lipid repertoire that can be presented by any given CD1 protein. We will compare the structures of various lipid antigens and finally, we will discuss recognition of CD1-presented lipid antigens by antigen receptors on T cells (TCRs).
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Affiliation(s)
- Dirk M Zajonc
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology (LJI), La Jolla, CA, 92037, USA. .,Department of Internal Medicine, Faculty of Medicine and Health Sciences, Ghent University, 9000, Ghent, Belgium.
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8
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Jukes J, Gileadi U, Ghadbane H, Yu T, Shepherd D, Cox LR, Besra GS, Cerundolo V. Non-glycosidic compounds can stimulate both human and mouse iNKT cells. Eur J Immunol 2016; 46:1224-34. [PMID: 26873393 PMCID: PMC4913735 DOI: 10.1002/eji.201546114] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 01/05/2016] [Accepted: 02/08/2016] [Indexed: 12/14/2022]
Abstract
Invariant natural killer T (iNKT) cells recognize CD1d/glycolipid complexes and upon activation with synthetic agonists display immunostimulatory properties. We have previously described that the non-glycosidic CD1d-binding lipid, threitolceramide (ThrCer) activates murine and human iNKT cells. Here, we show that incorporating the headgroup of ThrCer into a conformationally more restricted 6- or 7-membered ring results in significantly more potent non-glycosidic analogs. In particular, ThrCer 6 was found to promote strong anti-tumor responses and to induce a more prolonged stimulation of iNKT cells than does the canonical α-galactosylceramide (α-GalCer), achieving an enhanced T-cell response at lower concentrations compared with α-GalCer both in vitro, using human iNKT-cell lines and in vivo, using C57BL/6 mice. Collectively, these studies describe novel non-glycosidic ThrCer-based analogs that have improved potency in iNKT-cell activation compared with that of α-GalCer, and are clinically relevant iNKT-cell agonists.
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Affiliation(s)
- John‐Paul Jukes
- MRC Human Immunology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular MedicineUniversity of OxfordOxfordUK
| | - Uzi Gileadi
- MRC Human Immunology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular MedicineUniversity of OxfordOxfordUK
| | - Hemza Ghadbane
- MRC Human Immunology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular MedicineUniversity of OxfordOxfordUK
| | - Ting‐Fong Yu
- School of Biosciences, University of BirminghamEdgbastonBirminghamUK
- School of ChemistryUniversity of BirminghamEdgbastonBirminghamUK
| | - Dawn Shepherd
- MRC Human Immunology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular MedicineUniversity of OxfordOxfordUK
| | - Liam R. Cox
- School of ChemistryUniversity of BirminghamEdgbastonBirminghamUK
| | - Gurdyal S. Besra
- School of Biosciences, University of BirminghamEdgbastonBirminghamUK
| | - Vincenzo Cerundolo
- MRC Human Immunology Unit, Radcliffe Department of Medicine, MRC Weatherall Institute of Molecular MedicineUniversity of OxfordOxfordUK
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9
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Birkholz AM, Kronenberg M. Antigen specificity of invariant natural killer T-cells. Biomed J 2016; 38:470-83. [PMID: 27013447 PMCID: PMC6138764 DOI: 10.1016/j.bj.2016.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 11/16/2015] [Indexed: 12/16/2022] Open
Abstract
Natural killer T-cells, with an invariant T-cell antigen receptor α-chain (iNKT cells), are unique and conserved subset of lymphocytes capable of altering the immune system through their rapid and potent cytokine responses. They are reactive to lipid antigens presented by the CD1d molecule, an antigen-presenting molecule that is not highly polymorphic. iNKT cell responses frequently involve mixtures of cytokines that work against each other, and therefore attempts are underway to develop synthetic antigens that elicit only strong interferon-gamma (IFNγ) or only strong interleukin-4 responses but not both. Strong IFNγ responses may correlate with tighter binding to CD1d and prolonged stimulation of iNKT cells, and this may be useful for vaccine adjuvants and for stimulating anti-tumor responses. iNKT cells are self-reactive although the structure of the endogenous antigen is controversial. By contrast, bacterial and fungal lipids that engage the T-cell receptor and activate IFNγ from iNKT cells have been identified from both pathogenic and commensal organisms and the responses are in some cases highly protective from pathogens in mice. It is possible that the expanding knowledge of iNKT cell antigens and iNKT cell activation will provide the basis for therapies for patients suffering from infectious and immune diseases and cancer.
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Affiliation(s)
- Alysia M Birkholz
- Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, USA; Division of Biological Sciences, University of California, San Diego, La Jolla, USA
| | - Mitchell Kronenberg
- Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, USA; Division of Biological Sciences, University of California, San Diego, La Jolla, USA.
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10
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Baena A, Gómez-Giraldo L, Carreño LJ. Mecanismos de activación de las células T asesinas naturales invariantes (iNKT). IATREIA 2015. [DOI: 10.17533/udea.iatreia.v29n1a05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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11
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Laurent X, Bertin B, Renault N, Farce A, Speca S, Milhomme O, Millet R, Desreumaux P, Hénon E, Chavatte P. Switching Invariant Natural Killer T (iNKT) Cell Response from Anticancerous to Anti-Inflammatory Effect: Molecular Bases. J Med Chem 2014; 57:5489-508. [DOI: 10.1021/jm4010863] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xavier Laurent
- Faculté
de Médecine, Intestinal Biotech Development, Amphis J et K, Boulevard du Professeur Jules Leclerc, 59045 Lille Cedex, France
- Laboratoire
de Chimie Thérapeutique, EA 4481, Faculté des Sciences
Pharmaceutiques et Biologiques, Université Lille-Nord de France, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Benjamin Bertin
- Faculté
de
Médecine, Université Lille-Nord de France, Amphis J
et K, INSERM U995, Boulevard du Professeur
Jules Leclerc, 59045 Lille Cedex, France
| | - Nicolas Renault
- Laboratoire
de Chimie Thérapeutique, EA 4481, Faculté des Sciences
Pharmaceutiques et Biologiques, Université Lille-Nord de France, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Amaury Farce
- Laboratoire
de Chimie Thérapeutique, EA 4481, Faculté des Sciences
Pharmaceutiques et Biologiques, Université Lille-Nord de France, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Silvia Speca
- Faculté
de
Médecine, Université Lille-Nord de France, Amphis J
et K, INSERM U995, Boulevard du Professeur
Jules Leclerc, 59045 Lille Cedex, France
| | - Ophélie Milhomme
- Institut
de Chimie Pharmaceutique Albert Lespagnol, EA 4481, Université Lille-Nord de France, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Régis Millet
- Institut
de Chimie Pharmaceutique Albert Lespagnol, EA 4481, Université Lille-Nord de France, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
| | - Pierre Desreumaux
- Faculté
de
Médecine, Université Lille-Nord de France, Amphis J
et K, INSERM U995, Boulevard du Professeur
Jules Leclerc, 59045 Lille Cedex, France
| | - Eric Hénon
- Université
de Reims Champagne-Ardenne, UFR des Sciences Exactes et Naturelles,
BSMA-ICMR, UMR CNRS 6229, Moulin de
la Housse, BP 1039, 51687 Reims Cedex 2, France
| | - Philippe Chavatte
- Laboratoire
de Chimie Thérapeutique, EA 4481, Faculté des Sciences
Pharmaceutiques et Biologiques, Université Lille-Nord de France, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
- Institut
de Chimie Pharmaceutique Albert Lespagnol, EA 4481, Université Lille-Nord de France, 3 Rue du Professeur Laguesse, BP 83, 59006 Lille Cedex, France
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Abstract
Over the past 15 years, investigators have shown that T lymphocytes can recognize not only peptides in the context of MHC class I and class II molecules but also foreign and self-lipids in association with the nonclassical MHC class I-like molecules, CD1 proteins. In this review, we describe the most recent events in the field, with particular emphasis on (a) structural and functional aspects of lipid presentation by CD1 molecules, (b) the development of CD1d-restricted invariant natural killer T (iNKT) cells and transcription factors required for their differentiation, (c) the ability of iNKT cells to modulate innate and adaptive immune responses through their cross talk with lymphoid and myeloid cells, and (d) MR1-restricted and group I (CD1a, CD1b, and CD1c)-restricted T cells.
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Affiliation(s)
- Mariolina Salio
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DU, United Kingdom;
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13
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Rayapudi M, Rajavelu P, Zhu X, Kaul A, Niranjan R, Dynda S, Mishra A, Mattner J, Zaidi A, Dutt P, Mishra A. Invariant natural killer T-cell neutralization is a possible novel therapy for human eosinophilic esophagitis. Clin Transl Immunology 2014; 3:e9. [PMID: 25505954 PMCID: PMC4232063 DOI: 10.1038/cti.2013.13] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 10/30/2013] [Accepted: 10/30/2013] [Indexed: 12/11/2022] Open
Abstract
Eosinophilic esophagitis (EoE) is a recently recognized inflammatory disorder that needs a potential therapeutic strategy. We earlier showed that iNKT cell-deficient mice are protected from allergen-induced EoE. Therefore, we now tested the hypothesis that iNKT cells are induced in the human EoE and is a novel possible target for the treatment of human EoE. Accordingly, we examine number of iNKT cells and eosinophils and expression of iNKT-associated cell surface receptors and chemokines by performing immunofluorescence, qPCR and ELISA in the esophageal biopsies and blood samples of normal subjects (comparison control) and EoE patients. Herein, we show that iNKT cell number, their receptor subcomponents Vα24 and Vβ11 expression, and associated chemokine CXCL16 levels (or expression) are induced significantly in EoE patients compared with normal individuals. In addition, we show that CXCL16 levels (or expression) correlate with the mRNA levels of Vα24 receptor but not well with esophageal eosinophilia in human EoE. Of note, we show that in vivo activation of iNKT cells is sufficient to induce EoE in mice. Furthermore, we show that anti-mCD1d- and anti-hVα24Jα18-neutralizing antibody treatment protects allergen-induced experimental EoE. Taken together, we have shown first time that iNKT cells have a critical pathogenic role in human and experimental EoE. iNKT cell neutralization by humanized anti-CD1d and anti-Vα24Jα18 antibodies might be a novel and potential therapy for human EoE.
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Affiliation(s)
- Madhavi Rayapudi
- Department of Pathology, University of Cincinnati , Cincinnati, OH, USA
| | - Priya Rajavelu
- Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center , Cincinnati, OH , USA
| | - Xiang Zhu
- Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center , Cincinnati, OH, USA
| | - Ajay Kaul
- Division of Gastroenterology, Hepatology, and Nutrition, Cincinnati Children's Hospital Medical Center , Cincinnati, OH, USA
| | - Rituraj Niranjan
- Division of Gastroenterology and Liver Disease, Case Western Reserve University , Cleveland, OH, USA
| | - Scott Dynda
- Division of Gastroenterology and Liver Disease, Case Western Reserve University , Cleveland, OH, USA
| | - Akanksha Mishra
- Biomedical Engineering, Case Western Reserve University , Cleveland, OH, USA
| | - Jochen Mattner
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center ; Cincinnati, OH, USA ; Mikrobiologisches Institut-Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität Erlangen-Nürnberg, D-91054 , Erlangen, Germany
| | - Asifa Zaidi
- Pulmonary Diseases, Tulane Eosinophilic Disorder Center, Tulane University School of Medicine , New Orleans, LA, USA
| | - Parmesh Dutt
- Pulmonary Diseases, Tulane Eosinophilic Disorder Center, Tulane University School of Medicine , New Orleans, LA, USA
| | - Anil Mishra
- Pulmonary Diseases, Tulane Eosinophilic Disorder Center, Tulane University School of Medicine , New Orleans, LA, USA
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14
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Anderson BL, Teyton L, Bendelac A, Savage PB. Stimulation of natural killer T cells by glycolipids. Molecules 2013; 18:15662-88. [PMID: 24352021 PMCID: PMC4018217 DOI: 10.3390/molecules181215662] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/11/2013] [Accepted: 12/11/2013] [Indexed: 01/31/2023] Open
Abstract
Natural killer T (NKT) cells are a subset of T cells that recognize glycolipid antigens presented by the CD1d protein. The initial discovery of immunostimulatory glycolipids from a marine sponge and the T cells that respond to the compounds has led to extensive research by chemists and immunologists to understand how glycolipids are recognized, possible responses by NKT cells, and the structural features of glycolipids necessary for stimulatory activity. The presence of this cell type in humans and most mammals suggests that it plays critical roles in antigen recognition and the interface between innate and adaptive immunity. Both endogenous and exogenous natural antigens for NKT cells have been identified, and it is likely that glycolipid antigens remain to be discovered. Multiple series of structurally varied glycolipids have been synthesized and tested for stimulatory activity. The structural features of glycolipids necessary for NKT cell stimulation are moderately well understood, and designed compounds have proven to be much more potent antigens than their natural counterparts. Nevertheless, control over NKT cell responses by designed glycolipids has not been optimized, and further research will be required to fully reveal the therapeutic potential of this cell type.
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Affiliation(s)
| | | | | | - Paul B Savage
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA.
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15
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Abstract
Natural killer T (NKT) cells are innate-like T cells that rapidly produce a variety of cytokines following T cell receptor (TCR) activation and can shape the immune response in many different settings. There are two main NKT cell subsets: type I NKT cells are typically characterized by the expression of a semi-invariant TCR, whereas the TCRs expressed by type II NKT cells are more diverse. This Review focuses on the defining features and emerging generalities regarding how NKT cells specifically recognize self, microbial and synthetic lipid-based antigens that are presented by CD1d. Such information is vitally important to better understand, and fully harness, the therapeutic potential of NKT cells.
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16
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Girardi E, Zajonc DM. Molecular basis of lipid antigen presentation by CD1d and recognition by natural killer T cells. Immunol Rev 2012; 250:167-79. [PMID: 23046129 PMCID: PMC3471380 DOI: 10.1111/j.1600-065x.2012.01166.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Together with peptides, T lymphocytes respond to hydrophobic molecules, mostly lipids, presented by the non-classical CD1 family (CD1a-e). These molecules have evolved complex and diverse binding grooves in order to survey different cellular compartments for self and exogenous antigens, which are then presented for recognition to T-cell receptors (TCRs) on the surface of T cells. In particular, most CD1d-presented antigens are recognized by a population of lymphocytes denominated natural killer T (NKT) cells, characterized by a strong immunomodulatory potential. Among NKT cells, two major subsets (type I and type II NKT cells) have been described, based on their TCR repertoire and antigen specificity. Here we review recent structural and biochemical studies that have shed light on the molecular details of CD1d-mediated antigen recognition by type I and II NKT cells, which are in many aspects distinct from what has been observed for peptide major histocompatibility complex-reactive TCRs.
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MESH Headings
- Animals
- Antigen-Presenting Cells/cytology
- Antigen-Presenting Cells/immunology
- Antigen-Presenting Cells/metabolism
- Antigens/chemistry
- Antigens/immunology
- Antigens/metabolism
- Antigens, CD1d/chemistry
- Antigens, CD1d/immunology
- Antigens, CD1d/metabolism
- Binding Sites
- Epitopes
- Humans
- Killer Cells, Natural/cytology
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Lipids/chemistry
- Lipids/immunology
- Mice
- Models, Molecular
- Protein Binding
- Protein Conformation
- Protein Multimerization
- Receptors, Antigen, T-Cell/chemistry
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell/metabolism
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Affiliation(s)
- Enrico Girardi
- Division of Cell Biology, La Jolla Institute for Allergy and Immunology, CA, USA
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17
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Lawson V. Turned on by danger: activation of CD1d-restricted invariant natural killer T cells. Immunology 2012; 137:20-7. [PMID: 22734667 DOI: 10.1111/j.1365-2567.2012.03612.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
CD1d-restricted invariant natural killer T (iNKT) cells bear characteristics of innate and adaptive lymphocytes, which allow them to bridge the two halves of the immune response and play roles in many disease settings. Recent work has characterized precisely how their activation is initiated and regulated. Novel antigens from important pathogens have been identified, as has an abundant self-antigen, β-glucopyranosylcaramide, capable of mediating an iNKT-cell response. Studies of the iNKT T-cell receptor (TCR)-antigen-CD1d complex show how docking between CD1d-antigen and iNKT TCR is highly conserved, and how small sequence differences in the TCR establish intrinsic variation in iNKT TCR affinity. The sequence of the TCR CDR3β loop determines iNKT TCR affinity for ligand-CD1d, independent of ligand identity. CD1d ligands can promote T helper type 1 (Th1) or Th2 biased cytokine responses, depending on the composition of their lipid tails. Ligands loaded into CD1d on the cell surface promote Th2 responses, whereas ligands with long hydrophobic tails are loaded endosomally and promote Th1 responses. This information is informing the design of synthetic iNKT-cell antigens. The iNKT cells may be activated by exogenous antigen, or by a combination of dendritic cell-derived interleukin-12 and iNKT TCR-self-antigen-CD1d engagement. The iNKT-cell activation is further modulated by recent foreign or self-antigen encounter. Activation of dendritic cells through pattern recognition receptors alters their antigen presentation and cytokine production, strongly influencing iNKT-cell activation. In a range of bacterial infections, dendritic cell-dependent innate activation of iNKT cells through interleukin-12 is the dominant influence on their activity.
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18
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Wun KS, Ross F, Patel O, Besra GS, Porcelli SA, Richardson SK, Keshipeddy S, Howell AR, Godfrey DI, Rossjohn J. Human and mouse type I natural killer T cell antigen receptors exhibit different fine specificities for CD1d-antigen complex. J Biol Chem 2012; 287:39139-48. [PMID: 22995911 DOI: 10.1074/jbc.m112.412320] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Human and mouse type I natural killer T (NKT) cells respond to a variety of CD1d-restricted glycolipid antigens (Ags), with their NKT cell antigen receptors (NKT TCRs) exhibiting reciprocal cross-species reactivity that is underpinned by a conserved NKT TCR-CD1d-Ag docking mode. Within this common docking footprint, the NKT TCR recognizes, to varying degrees of affinity, a range of Ags. Presently, it is unclear whether the human NKT TCRs will mirror the generalities underpinning the fine specificity of the mouse NKT TCR-CD1d-Ag interaction. Here, we assessed human NKT TCR recognition against altered glycolipid ligands of α-galactosylceramide (α-GalCer) and have determined the structures of a human NKT TCR in complex with CD1d-4',4″-deoxy-α-GalCer and CD1d-α-GalCer with a shorter, di-unsaturated acyl chain (C20:2). Altered glycolipid ligands with acyl chain modifications did not affect the affinity of the human NKT TCR-CD1d-Ag interaction. Surprisingly, human NKT TCR recognition is more tolerant to modifications at the 4'-OH position in comparison with the 3'-OH position of α-GalCer, which contrasts the fine specificity of the mouse NKT TCR-CD1d-Ag recognition (4'-OH > 3'-OH). The fine specificity differences between human and mouse NKT TCRs was attributable to differing interactions between the respective complementarity-determining region 1α loops and the Ag. Accordingly, germline encoded fine-specificity differences underpin human and mouse type I NKT TCR interactions, which is an important consideration for therapeutic development and NKT cell physiology.
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Affiliation(s)
- Kwok S Wun
- Australian Research Council (ARC) Centre of Excellence in Structural and Functional Microbial Genomics, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia
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19
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Abstract
Natural killer T cells (NKT cells) represent a subset of T lymphocytes that express natural killer (NK) cell surface markers. A subset of NKT cells, termed invariant NKT cells (iNKT), express a highly restricted T cell receptor (TCR) and respond to CD1d-restricted lipid ligands. iNKT cells are now appreciated to play an important role in linking innate and adaptive immune responses and have been implicated in infectious disease, allergy, asthma, autoimmunity, and tumor surveillance. Advances in iNKT identification and purification have allowed for the detailed study of iNKT activity in both humans and mice during a variety of chronic and acute infections. Comparison of iNKT function between non-pathogenic simian immunodeficiency virus (SIV) infection models and chronic HIV-infected patients implies a role for iNKT activity in controlling immune activation. In vitro studies of influenza infection have revealed novel effector functions of iNKT cells including IL-22 production and modulation of myeloid-derived suppressor cells, but ex vivo characterization of human iNKT cells during influenza infection are lacking. Similarly, as recent evidence suggests iNKT involvement in dengue virus pathogenesis, iNKT cells may modulate responses to a number of emerging pathogens. This Review will summarize current knowledge of iNKT involvement in responses to viral infections in both human and mouse models and will identify critical gaps in knowledge and opportunities for future study. We will also highlight recent efforts to harness iNKT ligands as vaccine adjuvants capable of improving vaccination-induced cellular immune responses.
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Affiliation(s)
- Jennifer A. Juno
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Yoav Keynan
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
- Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Keith R. Fowke
- Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Community Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
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20
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Hsieh MH, Hung JT, Liw YW, Lu YJ, Wong CH, Yu AL, Liang PH. Synthesis and evaluation of acyl-chain- and galactose-6''-modified analogues of α-GalCer for NKT cell activation. Chembiochem 2012; 13:1689-97. [PMID: 22730199 DOI: 10.1002/cbic.201200004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Indexed: 12/25/2022]
Abstract
α-GalCer is an immunostimulating glycolipid that binds to CD1d molecules and activates invariant natural killer T (iNKT) cells. Here we report a scaled-up synthesis of α-GalCer analogues with modifications in the acyl side chain and/or at the galactose 6''-position, together with their evaluation in vitro and in vivo. Analogues containing 11-phenylundecanoyl acyl side chains with aromatic substitutions (14, 16-21) and Gal-6''-phenylacetamide-substituted α-GalCer analogues bearing p-nitro- (32), p-tert-butyl (34), or o-, m-, or p-methyl groups (40-42) displayed higher IFN-γ/IL-4 secretion ratios than α-GalCer in vitro. In mice, compound 16, with an 11-(3,4-difluorophenyl)undecanoyl acyl chain, induced significant proliferation of NK and DC cells, which should be beneficial in killing tumors and priming the immune response. These new glycolipids might prove useful as adjuvants or anticancer agents.
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Affiliation(s)
- Ming-Han Hsieh
- School of Pharmacy, College of Medicine, National Taiwan University, 1, Jen-Ai Road, Section 1, Taipei 100, Taiwan
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21
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Tolou-Ghamari Z. Nephro and neurotoxicity of calcineurin inhibitors and mechanisms of rejections: A review on tacrolimus and cyclosporin in organ transplantation. J Nephropathol 2012; 1:23-30. [PMID: 24475383 DOI: 10.5812/jnp.6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Accepted: 02/10/2013] [Indexed: 12/30/2022] Open
Abstract
CONTEXT In the meadow of medical sciences substituting a diseased organ with a healthy one from another individual, dead or alive, to allow a human to stay alive could be consider as the most string event. In this article we review the history of transplantation, mechanisms of rejection, nephro-neurotoxicity of tacrolimus and cyclosporin in organ transplantations. EVIDENCE ACQUISITIONS Directory of Open Access Journals (DOAJ), Google Scholar, Pubmed (NLM), LISTA (EBSCO) and Web of Science have been searched. RESULTS The first reference to the concept of organ transplantation and replacement for therapeutic purposes appears to be to Hua-To (136 to 208 A.D), who replaced diseased organs with healthy ones in patients under analgesia induced with a mixture of Indian hemp. In 1936, the first human renal transplant performed by Voronoy in Russia. The first liver transplant in humans was performed on March 1, 1963 by Starzl in Denver, USA. Medawar was the first to assert that rejection was an immunological response, with the inflammatory reaction due to lymphocyte infiltration. Consequently, rational immunosuppressive therapies could inhibit deleterious T-cell responses in an antigen specific manner. CONCLUSIONS Searching related to the history of organ transplantation from mythic to modern times suggests that, to prevent graft rejection, minimize nephro and neuro toxicity monitoring of immunosupressive concentrations could provide an invaluable and essential aid in adjusting dosage to ensure adequate immunosuppression.
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Affiliation(s)
- Zahra Tolou-Ghamari
- Isfahan Neuroscience Research Centre, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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22
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Subrahmanyam PB, Sun W, East JE, Li J, Webb TJ. Natural killer T cell based Immunotherapy. ACTA ACUST UNITED AC 2012; 3:144. [PMID: 24089657 DOI: 10.4172/2157-7560.1000144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Natural killer T (NKT) cells play an important immunoregulatory role and are thought to bridge the innate and adaptive immune responses. Following activation through cognate interactions with lipid antigen presented in the context of CD1d molecules, NKT cells rapidly produce a plethora of cytokines and can also mediate cytotoxicity. Due to their potent effector functions, extensive research has been performed to increase our understanding on how to effectively modulate these cells. In fact, NKT cell agonists have been used as vaccine adjuvants to enhance antigen specific T and B cell responses to infections and malignancy. In this review, we will focus on recent advances in NKT cell-based vaccination strategies. Given the role that NKT cells play in autoimmune disease, infectious diseases, cancer, transplant immunology and dermatology, it is important to understand how to effectively guide their effector functions in order to develop novel immunotherapeutic strategies.
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Affiliation(s)
- Priyanka B Subrahmanyam
- Department of Microbiology and Immunology, University of Maryland School of Medicine, the Marlene and Stewart Greenebaum Cancer Center, Baltimore, Maryland 21201
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