1
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Chung DC, Garcia-Batres CR, Millar DG, Wong SWY, Elford AR, Mathews JA, Wang BX, Nguyen LT, Shaw PA, Clarke BA, Bernardini MQ, Sacher AG, Crome SQ, Ohashi PS. Generation of an Inhibitory NK Cell Subset by TGF-β1/IL-15 Polarization. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:1904-1912. [PMID: 38668728 PMCID: PMC11149900 DOI: 10.4049/jimmunol.2300834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 04/02/2024] [Indexed: 06/05/2024]
Abstract
NK cells have been shown to exhibit inflammatory and immunoregulatory functions in a variety of healthy and diseased settings. In the context of chronic viral infection and cancer, distinct NK cell populations that inhibit adaptive immune responses have been observed. To understand how these cells arise and further characterize their immunosuppressive role, we examined in vitro conditions that could polarize human NK cells into an inhibitory subset. TGF-β1 has been shown to induce regulatory T cells in vitro and in vivo; we therefore investigated if TGF-β1 could also induce immunosuppressive NK-like cells. First, we found that TGF-β1/IL-15, but not IL-15 alone, induced CD103+CD49a+ NK-like cells from peripheral blood NK cells, which expressed markers previously associated with inhibitory CD56+ innate lymphoid cells, including high expression of GITR and CD101. Moreover, supernatant from ascites collected from patients with ovarian carcinoma also induced CD103+CD49a+ NK-like cells in vitro in a TGF-β-dependent manner. Interestingly, TGF-β1/IL-15-induced CD103+CD56+ NK-like cells suppressed autologous CD4+ T cells in vitro by reducing absolute number, proliferation, and expression of activation marker CD25. Collectively, these findings provide new insight into how NK cells may acquire an inhibitory phenotype in TGF-β1-rich environments.
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Affiliation(s)
- Douglas C. Chung
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Carlos R. Garcia-Batres
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Douglas G. Millar
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Stephanie W. Y. Wong
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Alisha R. Elford
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Jessica A. Mathews
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
| | - Ben X. Wang
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Linh T. Nguyen
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Patricia A. Shaw
- Division of Gynecologic Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Blaise A. Clarke
- Division of Gynecologic Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Marcus Q. Bernardini
- Division of Gynecologic Oncology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Adrian G. Sacher
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Department of Medical Oncology & Hematology, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Sarah Q. Crome
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ajmera Transplant Centre, University Health Network, Toronto, ON, Canada
| | - Pamela S. Ohashi
- Department of Immunology, University of Toronto, Toronto, ON, Canada
- Tumour Immunotherapy Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
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2
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Ding J, Yan X, Zhao C, Zhao D, Jia Y, Ren K, Wang Y, Lu J, Sun T, Zhao S, Li H, Guo J. The ratio of circulating CD56 dim NK cells to follicular T helper cells as a promising predictor for disease activity of relapsing-remitting multiple sclerosis. Heliyon 2024; 10:e31533. [PMID: 38803865 PMCID: PMC11128518 DOI: 10.1016/j.heliyon.2024.e31533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 05/17/2024] [Accepted: 05/17/2024] [Indexed: 05/29/2024] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the central nervous system primarily mediated by CD4+ T helper cells. This study investigated the dynamic changes of natural killer (NK) cells and follicular T helper (Tfh) cells and their associations in relapsing-remitting MS patients. The findings revealed inverse relationships between NK cells and CD4+ T cells or Tfh cells. Specifically, CD56dim NK cells, not CD56bright NK cells, were negatively correlated with CD4+ T cells and Tfh cells. However, no significant correlations were found between NK cells and sNfL levels or EDSS scores. The ratio of CD56dim NK cells to circulating Tfh (cTfh) cells demonstrated superior discriminatory ability in distinguishing relapsing MS patients from healthy controls (HCs) and remitting patients, as determined by receiver operating characteristic (ROC) analysis. Following treatment with immunosuppressants or disease-modifying therapies (DMTs), a significant increase in the CD56dim NK/cTfh ratio was observed. These findings suggest that the CD56dim NK/cTfh ratio holds promise as a prognostic indicator for clinical relapse and treatment response in MS.
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Affiliation(s)
- Jiaqi Ding
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Xu Yan
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Cong Zhao
- Department of Neurology, Air Force Medical Center of PLA, Beijing, 100142, China
| | - Daidi Zhao
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Yan Jia
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Kaixi Ren
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Yao Wang
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Jiarui Lu
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Tangna Sun
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Sijia Zhao
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Hongzeng Li
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Jun Guo
- Department of Neurology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
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3
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Roe K. Immunoregulatory natural killer cells. Clin Chim Acta 2024; 558:117896. [PMID: 38583553 DOI: 10.1016/j.cca.2024.117896] [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: 02/29/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/09/2024]
Abstract
This review discusses a broader scope of functional roles for NK cells. Despite the well-known cytolytic and inflammatory roles of NK cells against tumors and pathogenic diseases, extensive evidence demonstrates certain subsets of NK cells have defacto immunoregulatory effects and have a role in inducing anergy or lysis of antigen-activated T cells and regulating several autoimmune diseases. Furthermore, recent evidence suggests certain subsets of immunoregulatory NK cells can cause anergy or lysis of antigen-activated T cells to regulate hyperinflammatory diseases, including multisystem inflammatory syndrome. Several pathogens induce T cell and NK cell exhaustion and/or suppression, which impair the immune system's control of the replication speed of virulent pathogens and tumors and result in extensive antigens and antigen-antibody immune complexes, potentially inducing to some extent a Type III hypersensitivity immune reaction. The Type III hypersensitivity immune reaction induces immune cell secretion of proteinases, which can cleave specific proteins to create autoantigens which activate T cells to initiate autoimmune and/or hyperinflammatory diseases. Furthermore, pathogen induced NK cell exhaustion and/or suppression will inhibit NK cells which would have induced the anergy or lysis of activated T cells to regulate autoimmune and hyperinflammatory diseases. Autoimmune and hyperinflammatory diseases can be consequences of the dual lymphocyte exhaustion and/or suppression effects during infections, by creating autoimmune and/or hyperinflammatory diseases, while also impairing immunoregulatory lymphocytes which otherwise would have regulated these diseases.
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Affiliation(s)
- Kevin Roe
- Retired USPTO, San Jose, CA, United States of America.
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4
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Santiso A, Heinemann A, Kargl J. Prostaglandin E2 in the Tumor Microenvironment, a Convoluted Affair Mediated by EP Receptors 2 and 4. Pharmacol Rev 2024; 76:388-413. [PMID: 38697857 DOI: 10.1124/pharmrev.123.000901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 11/15/2023] [Accepted: 11/20/2023] [Indexed: 05/05/2024] Open
Abstract
The involvement of the prostaglandin E2 (PGE2) system in cancer progression has long been recognized. PGE2 functions as an autocrine and paracrine signaling molecule with pleiotropic effects in the human body. High levels of intratumoral PGE2 and overexpression of the key metabolic enzymes of PGE2 have been observed and suggested to contribute to tumor progression. This has been claimed for different types of solid tumors, including, but not limited to, lung, breast, and colon cancer. PGE2 has direct effects on tumor cells and angiogenesis that are known to promote tumor development. However, one of the main mechanisms behind PGE2 driving cancerogenesis is currently thought to be anchored in suppressed antitumor immunity, thus providing possible therapeutic targets to be used in cancer immunotherapies. EP2 and EP4, two receptors for PGE2, are emerging as being the most relevant for this purpose. This review aims to summarize the known roles of PGE2 in the immune system and its functions within the tumor microenvironment. SIGNIFICANCE STATEMENT: Prostaglandin E2 (PGE2) has long been known to be a signaling molecule in cancer. Its presence in tumors has been repeatedly associated with disease progression. Elucidation of its effects on immunological components of the tumor microenvironment has highlighted the potential of PGE2 receptor antagonists in cancer treatment, particularly in combination with immune checkpoint inhibitor therapeutics. Adjuvant treatment could increase the response rates and the efficacy of immune-based therapies.
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Affiliation(s)
- Ana Santiso
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Akos Heinemann
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Julia Kargl
- Division of Pharmacology, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
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5
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Zhang J, Li AM, Kansler ER, Li MO. Cancer immunity by tissue-resident type 1 innate lymphoid cells and killer innate-like T cells. Immunol Rev 2024; 323:150-163. [PMID: 38506480 PMCID: PMC11102320 DOI: 10.1111/imr.13319] [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] [Indexed: 03/21/2024]
Abstract
Cancer progression can be restrained by tumor-infiltrating lymphocytes in a process termed cancer immunosurveillance. Based on how lymphocytes are activated and recruited to the tumor tissue, cancer immunity is either pre-wired, in which innate lymphocytes and innate-like T cells are directly recruited to and activated in tumors following their differentiation in primary lymphoid organs; or priming-dependent, in which conventional adaptive T cells are first primed by cognate antigens in secondary lymphoid organs before homing to and reactivated in tumors. While priming-dependent cancer immunity has been a focus of cancer immunology research for decades, in part due to historical preconception of cancer theory and tumor model choice as well as clinical success of conventional adaptive T cell-directed therapeutic programs, recent studies have revealed that pre-wired cancer immunity mediated by tissue-resident type 1 innate lymphoid cells (ILC1s) and killer innate-like T cells (ILTCKs) is an integral component of the cancer immunosurveillance process. Herein we review the distinct ontogenies and cancer-sensing mechanisms of ILC1s and ILTCKs in murine genetic cancer models as well as the conspicuously conserved responses in human malignancies. How ILC1s and ILTCKs may be targeted to broaden the scope of cancer immunotherapy beyond conventional adaptive T cells is also discussed.
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Affiliation(s)
- Jing Zhang
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Albert M. Li
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Emily R. Kansler
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ming O. Li
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Louis V. Gerstner Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Immunology and Microbial Pathogenesis Graduate Program, Weill Cornell Graduate School of Biomedical Sciences, Cornell University, New York, NY, USA
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6
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Padoan B, Casar C, Krause J, Schultheiss C, Baumdick ME, Niehrs A, Zecher BF, Pujantell M, Yuki Y, Martin M, Remmerswaal EBM, Dekker T, van der Bom-Baylon ND, Noble JA, Carrington M, Bemelman FJ, van Lier RAW, Binder M, Gagliani N, Bunders MJ, Altfeld M. NKp44/HLA-DP-dependent regulation of CD8 effector T cells by NK cells. Cell Rep 2024; 43:114089. [PMID: 38615318 DOI: 10.1016/j.celrep.2024.114089] [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: 10/30/2023] [Revised: 03/03/2024] [Accepted: 03/26/2024] [Indexed: 04/16/2024] Open
Abstract
Although natural killer (NK) cells are recognized for their modulation of immune responses, the mechanisms by which human NK cells mediate immune regulation are unclear. Here, we report that expression of human leukocyte antigen (HLA)-DP, a ligand for the activating NK cell receptor NKp44, is significantly upregulated on CD8+ effector T cells, in particular in human cytomegalovirus (HCMV)+ individuals. HLA-DP+ CD8+ T cells expressing NKp44-binding HLA-DP antigens activate NKp44+ NK cells, while HLA-DP+ CD8+ T cells not expressing NKp44-binding HLA-DP antigens do not. In line with this, frequencies of HLA-DP+ CD8+ T cells are increased in individuals not encoding for NKp44-binding HLA-DP haplotypes, and contain hyper-expanded CD8+ T cell clones, compared to individuals expressing NKp44-binding HLA-DP molecules. These findings identify a molecular interaction facilitating the HLA-DP haplotype-specific editing of HLA-DP+ CD8+ T cell effector populations by NKp44+ NK cells and preventing the generation of hyper-expanded T cell clones, which have been suggested to have increased potential for autoimmunity.
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Affiliation(s)
- Benedetta Padoan
- Research Department Virus Immunology, Leibniz Institute of Virology, 20251 Hamburg, Germany
| | - Christian Casar
- Bioinformatics Core, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Jenny Krause
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; Center for Immunology, University of Minnesota, Minneapolis, MN, USA
| | - Christoph Schultheiss
- Division of Medical Oncology, University Hospital Basel, 4031 Basel, Switzerland; Laboratory of Translational Immuno-Oncology, Department of Biomedicine, University and University Hospital Basel, 4031 Basel, Switzerland
| | - Martin E Baumdick
- Research Department Virus Immunology, Leibniz Institute of Virology, 20251 Hamburg, Germany; III. Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Annika Niehrs
- Research Department Virus Immunology, Leibniz Institute of Virology, 20251 Hamburg, Germany
| | - Britta F Zecher
- Research Department Virus Immunology, Leibniz Institute of Virology, 20251 Hamburg, Germany; I. Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Maria Pujantell
- Research Department Virus Immunology, Leibniz Institute of Virology, 20251 Hamburg, Germany
| | - Yuko Yuki
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA; Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Maureen Martin
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA; Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Ester B M Remmerswaal
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Tamara Dekker
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Nelly D van der Bom-Baylon
- Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - Janelle A Noble
- Department of Pediatrics UCSF, Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA
| | - Mary Carrington
- Basic Science Program, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA; Laboratory of Integrative Cancer Immunology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA; Ragon Institute of MGH, MIT and Harvard, Cambridge, MA 02139, USA
| | - Frederike J Bemelman
- Renal Transplant Unit, Division of Internal Medicine, Academic Medical Centre, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | | | - Mascha Binder
- Division of Medical Oncology, University Hospital Basel, 4031 Basel, Switzerland; Laboratory of Translational Immuno-Oncology, Department of Biomedicine, University and University Hospital Basel, 4031 Basel, Switzerland
| | - Nicola Gagliani
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; Hamburg Center for Translational Immunology (HCTI), Hamburg, Germany
| | - Madeleine J Bunders
- Research Department Virus Immunology, Leibniz Institute of Virology, 20251 Hamburg, Germany; III. Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; Hamburg Center for Translational Immunology (HCTI), Hamburg, Germany
| | - Marcus Altfeld
- Research Department Virus Immunology, Leibniz Institute of Virology, 20251 Hamburg, Germany; Hamburg Center for Translational Immunology (HCTI), Hamburg, Germany.
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7
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Weber S, Menees KB, Park J, Agin-Liebes J, Lin CC, Alcalay RN, Lee JK. Distinctive CD56 dim NK subset profiles and increased NKG2D expression in blood NK cells of Parkinson's disease patients. NPJ Parkinsons Dis 2024; 10:36. [PMID: 38360903 PMCID: PMC10869354 DOI: 10.1038/s41531-024-00652-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 02/05/2024] [Indexed: 02/17/2024] Open
Abstract
Mounting data suggest an important role for the immune system in Parkinson's disease (PD). Previous evidence of increased natural killer (NK) cell populations in PD suggests a potential role of NK cells in the pathogenesis of the disease. Previous studies have analyzed NK cell populations using aggregation by variable expression of CD56 and CD16. It remains unknown what differences may exist between NK cell subpopulations when stratified using more nuanced classification. Here, we profile NK cell subpopulations and elucidate the expressions of activating, NKG2D, inhibitory, NKG2A, and homing, CX3CR1, receptors on NK cell subpopulations in PD and healthy controls (HC). We analyzed cryopreserved PMBC samples using a 10-color flow cytometry panel to evaluate NK cell subpopulations in 31 individuals with sporadic PD and 27 HC participants. Here we identified significant differences in the CD56dim NK subset that changes with disease severity in PD. Furthermore, the expressions of NKG2D in all three NK cell subsets were significantly elevated in PD patients compared to HC. Notably, NKG2A expression in the CD56bright NK subset increased in PD patients with longer disease duration but there were no changes in CX3CR1. In summary, our data suggests that changes in NK cells may be influenced by the clinical severity and duration of PD.
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Affiliation(s)
- Stephen Weber
- Department of Physiology and Pharmacology, University of Georgia College of Veterinary Medicine, Athens, GA, USA
| | - Kelly B Menees
- Department of Physiology and Pharmacology, University of Georgia College of Veterinary Medicine, Athens, GA, USA
| | - Jieun Park
- Harrison College of Pharmacy, Auburn University, Auburn, AL, USA
| | - Julian Agin-Liebes
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Chih-Chun Lin
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Roy N Alcalay
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
- Neurological Institute, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Jae-Kyung Lee
- Department of Physiology and Pharmacology, University of Georgia College of Veterinary Medicine, Athens, GA, USA.
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8
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Kim HJ, Nakagawa H, Choi JY, Che X, Divris A, Liu Q, Wight AE, Zhang H, Saad A, Solhjou Z, Deban C, Azzi JR, Cantor H. A narrow T cell receptor repertoire instructs thymic differentiation of MHC class Ib-restricted CD8+ regulatory T cells. J Clin Invest 2024; 134:e170512. [PMID: 37934601 PMCID: PMC10760956 DOI: 10.1172/jci170512] [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: 03/14/2023] [Accepted: 11/02/2023] [Indexed: 11/09/2023] Open
Abstract
Although most CD8+ T cells are equipped to kill infected or transformed cells, a subset may regulate immune responses and preserve self-tolerance. Here, we describe a CD8 lineage that is instructed to differentiate into CD8 T regulatory cells (Tregs) by a surprisingly restricted set of T cell receptors (TCRs) that recognize MHC-E (mouse Qa-1) and several dominant self-peptides. Recognition and elimination of pathogenic target cells that express these Qa-1-self-peptide complexes selectively inhibits pathogenic antibody responses without generalized immune suppression. Immunization with synthetic agonist peptides that mobilize CD8 Tregs in vivo efficiently inhibit antigraft antibody responses and markedly prolong heart and kidney organ graft survival. Definition of TCR-dependent differentiation and target recognition by this lineage of CD8 Tregs may open the way to new therapeutic approaches to inhibit pathogenic antibody responses.
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Affiliation(s)
- Hye-Jung Kim
- Department of Cancer Immunology & Virology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Immunology and
| | - Hidetoshi Nakagawa
- Department of Cancer Immunology & Virology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Immunology and
| | - John Y. Choi
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Transplant Research Center, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Xuchun Che
- Department of Cancer Immunology & Virology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Andrew Divris
- Department of Cancer Immunology & Virology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
| | - Qingshi Liu
- Department of Cancer Immunology & Virology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Immunology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Andrew E. Wight
- Department of Cancer Immunology & Virology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Immunology and
| | - Hengcheng Zhang
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Transplant Research Center, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Anis Saad
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Transplant Research Center, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Zhabiz Solhjou
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Transplant Research Center, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Christa Deban
- Transplant Research Center, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Jamil R. Azzi
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
- Transplant Research Center, Brigham and Women’s Hospital, Boston, Massachusetts, USA
| | - Harvey Cantor
- Department of Cancer Immunology & Virology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Department of Immunology and
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9
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Jiang H, Jiang J. Balancing act: the complex role of NK cells in immune regulation. Front Immunol 2023; 14:1275028. [PMID: 38022497 PMCID: PMC10652757 DOI: 10.3389/fimmu.2023.1275028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023] Open
Abstract
Natural killer (NK) cells, as fundamental components of innate immunity, can quickly react to abnormalities within the body. In-depth research has revealed that NK cells possess regulatory functions not only in innate immunity but also in adaptive immunity under various conditions. Multiple aspects of the adaptive immune process are regulated through NK cells. In our review, we have integrated multiple studies to illuminate the regulatory function of NK cells in regulating B cell and T cell responses during adaptive immune processes, focusing on aspects including viral infections and the tumor microenvironment (TME). These insights provide us with many new understandings on how NK cells regulate different phases of the adaptive immune response.
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Affiliation(s)
- Hongwei Jiang
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Jiangsu Engineering Research Center for Tumor Immunotherapy, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Institute for Cell Therapy, Soochow University, Changzhou, Jiangsu, China
| | - Jingting Jiang
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Jiangsu Engineering Research Center for Tumor Immunotherapy, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu, China
- Institute for Cell Therapy, Soochow University, Changzhou, Jiangsu, China
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10
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De Re V, Tornesello ML, Racanelli V, Prete M, Steffan A. Non-Classical HLA Class 1b and Hepatocellular Carcinoma. Biomedicines 2023; 11:1672. [PMID: 37371767 DOI: 10.3390/biomedicines11061672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
A number of studies are underway to gain a better understanding of the role of immunity in the pathogenesis of hepatocellular carcinoma and to identify subgroups of individuals who may benefit the most from systemic therapy according to the etiology of their tumor. Human leukocyte antigens play a key role in antigen presentation to T cells. This is fundamental to the host's defense against pathogens and tumor cells. In addition, HLA-specific interactions with innate lymphoid cell receptors, such those present on natural killer cells and innate lymphoid cell type 2, have been shown to be important activators of immune function in the context of several liver diseases. More recent studies have highlighted the key role of members of the non-classical HLA-Ib and the transcript adjacent to the HLA-F locus, FAT10, in hepatocarcinoma. The present review analyzes the major contribution of these molecules to hepatic viral infection and hepatocellular prognosis. Particular attention has been paid to the association of natural killer and Vδ2 T-cell activation, mediated by specific HLA class Ib molecules, with risk assessment and novel treatment strategies to improve immunotherapy in HCC.
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Affiliation(s)
- Valli De Re
- Immunopathology and Cancer Biomarkers Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituti di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
| | - Maria Lina Tornesello
- Molecular Biology and Viral Oncology Unit, Istituto Nazionale Tumori IRCCS "Fondazione G. Pascale", 80131 Naples, Italy
| | - Vito Racanelli
- Department of Interdisciplinary Medicine, School of Medicine, 'Aldo Moro' University of Bari, 70124 Bari, Italy
| | - Marcella Prete
- Department of Interdisciplinary Medicine, School of Medicine, 'Aldo Moro' University of Bari, 70124 Bari, Italy
| | - Agostino Steffan
- Immunopathology and Cancer Biomarkers Unit, Centro di Riferimento Oncologico di Aviano (CRO), Istituti di Ricovero e Cura a Carattere Scientifico (IRCCS), 33081 Aviano, Italy
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11
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Mora-Bitria L, Asquith B. Innate receptors modulating adaptive T cell responses: KIR-HLA interactions and T cell-mediated control of chronic viral infections. Immunogenetics 2023; 75:269-282. [PMID: 36719466 PMCID: PMC9887252 DOI: 10.1007/s00251-023-01293-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 01/02/2023] [Indexed: 02/01/2023]
Abstract
Killer-cell immunoglobulin-like receptors (KIRs) are mainly expressed on natural killer (NK) cells and are key regulators of innate immune responses. NK cells are the first responders in the face of infection and help promote placentation during pregnancy; the importance of KIRs in these NK-mediated processes is well-established. However, mounting evidence suggests that KIRs also have a prominent and long-lasting effect on the adaptive immune system. Here, we review the evidence for the impact of KIRs on T cell responses with a focus on the clinical significance of this interaction.
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Affiliation(s)
- Laura Mora-Bitria
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, UK
| | - Becca Asquith
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, UK.
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12
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Knoedler L, Knoedler S, Panayi AC, Lee CAA, Sadigh S, Huelsboemer L, Stoegner VA, Schroeter A, Kern B, Mookerjee V, Lian CG, Tullius SG, Murphy GF, Pomahac B, Kauke-Navarro M. Cellular activation pathways and interaction networks in vascularized composite allotransplantation. Front Immunol 2023; 14:1179355. [PMID: 37266446 PMCID: PMC10230044 DOI: 10.3389/fimmu.2023.1179355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 04/28/2023] [Indexed: 06/03/2023] Open
Abstract
Vascularized composite allotransplantation (VCA) is an evolving field of reconstructive surgery that has revolutionized the treatment of patients with devastating injuries, including those with limb losses or facial disfigurement. The transplanted units are typically comprised of different tissue types, including skin, mucosa, blood and lymphatic vasculature, muscle, and bone. It is widely accepted that the antigenicity of some VCA components, such as skin, is particularly potent in eliciting a strong recipient rejection response following transplantation. The fine line between tolerance and rejection of the graft is orchestrated by different cell types, including both donor and recipient-derived lymphocytes, macrophages, and other immune and donor-derived tissue cells (e.g., endothelium). Here, we delineate the role of different cell and tissue types during VCA rejection. Rejection of VCA grafts and the necessity of life-long multidrug immunosuppression remains one of the major challenges in this field. This review sheds light on recent developments in decoding the cellular signature of graft rejection in VCA and how these may, ultimately, influence the clinical management of VCA patients by way of novel therapies that target specific cellular processes.
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Affiliation(s)
- Leonard Knoedler
- Department of Plastic, Hand and Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
| | - Samuel Knoedler
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Adriana C. Panayi
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Catherine A. A. Lee
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, United States
| | - Sam Sadigh
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, United States
| | - Lioba Huelsboemer
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
| | - Viola A. Stoegner
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Burn Center, Hannover Medical School, Hannover, Germany
| | - Andreas Schroeter
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Burn Center, Hannover Medical School, Hannover, Germany
- Division of Transplant Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Barbara Kern
- Department of Plastic Surgery, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Vikram Mookerjee
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
| | - Christine G. Lian
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, United States
| | - Stefan G. Tullius
- Division of Transplant Surgery, Department of Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - George F. Murphy
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA, United States
| | - Bohdan Pomahac
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
| | - Martin Kauke-Navarro
- Division of Plastic Surgery, Department of Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, CT, United States
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13
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Geiger KM, Manoharan M, Coombs R, Arana K, Park CS, Lee AY, Shastri N, Robey EA, Coscoy L. Murine cytomegalovirus downregulates ERAAP and induces an unconventional T cell response to self. Cell Rep 2023; 42:112317. [PMID: 36995940 PMCID: PMC10539480 DOI: 10.1016/j.celrep.2023.112317] [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: 03/16/2022] [Revised: 01/02/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
The endoplasmic reticulum aminopeptidase associated with antigen processing (ERAAP) plays a crucial role in shaping the peptide-major histocompatibility complex (MHC) class I repertoire and maintaining immune surveillance. While murine cytomegalovirus (MCMV) has multiple strategies for manipulating the antigen processing pathway to evade immune responses, the host has also developed ways to counter viral immune evasion. In this study, we find that MCMV modulates ERAAP and induces an interferon γ (IFN-γ)-producing CD8+ T cell effector response that targets uninfected ERAAP-deficient cells. We observe that ERAAP downregulation during infection leads to the presentation of the self-peptide FL9 on non-classical Qa-1b, thereby eliciting Qa-1b-restricted QFL T cells to proliferate in the liver and spleen of infected mice. QFL T cells upregulate effector markers upon MCMV infection and are sufficient to reduce viral load after transfer to immunodeficient mice. Our study highlights the consequences of ERAAP dysfunction during viral infection and provides potential targets for anti-viral therapies.
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Affiliation(s)
- Kristina M Geiger
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA 94720, USA; Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Michael Manoharan
- Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Rachel Coombs
- Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Kathya Arana
- Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Chan-Su Park
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Angus Y Lee
- Cancer Research Lab, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Nilabh Shastri
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ellen A Robey
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA 94720, USA; Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA.
| | - Laurent Coscoy
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA 94720, USA; Division of Immunology and Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA.
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14
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Marquez-Martinez S, Vijayan A, Khan S, Zahn R. Cell entry and innate sensing shape adaptive immune responses to adenovirus-based vaccines. Curr Opin Immunol 2023; 80:102282. [PMID: 36716578 DOI: 10.1016/j.coi.2023.102282] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/05/2023] [Indexed: 01/30/2023]
Abstract
Nonreplicating adenovirus-based vectors have been successfully implemented as prophylactic vaccines against infectious viral diseases and induce protective cellular and humoral responses. Differences in the mechanisms of cellular entry or endosomal escape of these vectors contribute to differences in innate immune sensing between adenovirus species. Innate immune responses to adenovirus-based vaccines, such as interferon signaling, have been reported to affect the development of adaptive responses in preclinical studies, although limited data are available in humans. Understanding the mechanisms of these early events is critical for the development of vaccines that elicit effective and durable adaptive immune responses while maintaining an acceptable reactogenicity profile.
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Affiliation(s)
- Sonia Marquez-Martinez
- Janssen Vaccines & Prevention B.V., Archimedesweg 4-6, Leiden South Holland 2333 CN, the Netherlands.
| | - Aneesh Vijayan
- Janssen Vaccines & Prevention B.V., Archimedesweg 4-6, Leiden South Holland 2333 CN, the Netherlands
| | - Selina Khan
- Janssen Vaccines & Prevention B.V., Archimedesweg 4-6, Leiden South Holland 2333 CN, the Netherlands
| | - Roland Zahn
- Janssen Vaccines & Prevention B.V., Archimedesweg 4-6, Leiden South Holland 2333 CN, the Netherlands
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15
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Girdhar K, Dogru YD, Huang Q, Yang Y, Tolstikov V, Raisingani A, Chrudinova M, Oh J, Kelley K, Ludvigsson JF, Kiebish MA, Palm NW, Ludvigsson J, Altindis E. Dynamics of the gut microbiome, IgA response, and plasma metabolome in the development of pediatric celiac disease. MICROBIOME 2023; 11:9. [PMID: 36639805 PMCID: PMC9840338 DOI: 10.1186/s40168-022-01429-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/16/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Celiac disease (CD) is an autoimmune disorder triggered by gluten consumption. Almost all CD patients possess human leukocyte antigen (HLA) DQ2/DQ8 haplotypes; however, only a small subset of individuals carrying these alleles develop CD, indicating the role of environmental factors in CD pathogenesis. The main objective of this study was to determine the contributory role of gut microbiota and microbial metabolites in CD onset. To this end, we obtained fecal samples from a prospective cohort study (ABIS) at ages 2.5 and 5 years. Samples were collected from children who developed CD after the final sample collection (CD progressors) and healthy children matched by age, HLA genotype, breastfeeding duration, and gluten-exposure time (n=15-16). We first used 16S sequencing and immunoglobulin-A sequencing (IgA-seq) using fecal samples obtained from the same children (i) 16 controls and 15 CD progressors at age 2.5 and (ii) 13 controls and 9 CD progressors at age 5. We completed the cytokine profiling, and plasma metabolomics using plasma samples obtained at age 5 (n=7-9). We also determined the effects of one microbiota-derived metabolite, taurodeoxycholic acid (TDCA), on the small intestines and immune cell composition in vivo. RESULTS CD progressors have a distinct gut microbiota composition, an increased IgA response, and unique IgA targets compared to healthy subjects. Notably, 26 plasma metabolites, five cytokines, and one chemokine were significantly altered in CD progressors at age 5. Among 26 metabolites, we identified a 2-fold increase in TDCA. TDCA treatment alone caused villous atrophy, increased CD4+ T cells, Natural Killer cells, and two important immunoregulatory proteins, Qa-1 and NKG2D expression on T cells while decreasing T-regulatory cells in intraepithelial lymphocytes (IELs) in C57BL/6J mice. CONCLUSIONS Pediatric CD progressors have a distinct gut microbiota composition, plasma metabolome, and cytokine profile before diagnosis. Furthermore, CD progressors have more IgA-coated bacteria and unique targets of IgA in their gut microbiota. TDCA feeding alone stimulates an inflammatory immune response in the small intestines of C57BJ/6 mice and causes villous atrophy, the hallmark of CD. Thus, a microbiota-derived metabolite, TDCA, enriched in CD progressors' plasma, has the potential to drive inflammation in the small intestines and enhance CD pathogenesis. Video Abstract.
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Affiliation(s)
- Khyati Girdhar
- Boston College Biology Department, Chestnut Hill, MA, 02467, USA
| | | | - Qian Huang
- Boston College Biology Department, Chestnut Hill, MA, 02467, USA
| | - Yi Yang
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, 06510, USA
| | | | - Amol Raisingani
- Boston College Biology Department, Chestnut Hill, MA, 02467, USA
| | | | - Jaewon Oh
- Boston College Biology Department, Chestnut Hill, MA, 02467, USA
| | - Kristina Kelley
- Boston College Biology Department, Chestnut Hill, MA, 02467, USA
| | - Jonas F Ludvigsson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Department of Paediatrics, Örebro University Hospital, Örebro, Sweden
| | | | - Noah W Palm
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Johnny Ludvigsson
- Crown Princess Victoria Children's Hospital, Division of Pediatrics, Department of Biomedical and Clinical Sciences, Linköping University, 58185, Linköping, SE, Sweden
| | - Emrah Altindis
- Boston College Biology Department, Chestnut Hill, MA, 02467, USA.
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16
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Wang X, Xiong H, Ning Z. Implications of NKG2A in immunity and immune-mediated diseases. Front Immunol 2022; 13:960852. [PMID: 36032104 PMCID: PMC9399941 DOI: 10.3389/fimmu.2022.960852] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 07/21/2022] [Indexed: 11/22/2022] Open
Abstract
In recent studies, NKG2A is revealed to be a key immune checkpoint for both natural killer (NK) cells and CD8+ T cells. It form heterodimer receptors with CD94, and targets the peptide-presenting human leukocyte antigen-E (HLA-E) molecules. Upon crosslinking, NKG2A/CD94 delivers inhibitory signals for NK cells and CD8+ T cells, while blocking NKG2A can effectively unleash functions of these cytotoxic lymphocytes. The interaction between NKG2A and HLA-E contributes to tumor immune escape, and NKG2A-mediated mechanisms are currently being exploited to develop potential antitumor therapeutic strategies. In addition, growing evidence shows that NKG2A also plays important roles in other immune-related diseases including viral infections, autoimmune diseases, inflammatory diseases, parasite infections and transplant rejection. Therefore, the current work focuses on describing the effect of NKG2A on immune regulation and exploring its potential role in immune-mediated disorders.
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Affiliation(s)
- Xiaotong Wang
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, China
- Jining Key Laboratory of Immunology, Jining Medical University, Jining, China
| | - Huabao Xiong
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, China
- Jining Key Laboratory of Immunology, Jining Medical University, Jining, China
- *Correspondence: Zhaochen Ning, ; Huabao Xiong,
| | - Zhaochen Ning
- Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, China
- Jining Key Laboratory of Immunology, Jining Medical University, Jining, China
- *Correspondence: Zhaochen Ning, ; Huabao Xiong,
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17
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A T cell resilience model associated with response to immunotherapy in multiple tumor types. Nat Med 2022; 28:1421-1431. [PMID: 35501486 DOI: 10.1038/s41591-022-01799-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 03/24/2022] [Indexed: 01/10/2023]
Abstract
Despite breakthroughs in cancer immunotherapy, most tumor-reactive T cells cannot persist in solid tumors due to an immunosuppressive environment. We developed Tres (tumor-resilient T cell), a computational model utilizing single-cell transcriptomic data to identify signatures of T cells that are resilient to immunosuppressive signals, such as transforming growth factor-β1, tumor necrosis factor-related apoptosis-inducing ligand and prostaglandin E2. Tres reliably predicts clinical responses to immunotherapy in melanoma, lung cancer, triple-negative breast cancer and B cell malignancies using bulk T cell transcriptomic data from pre-treatment tumors from patients who received immune-checkpoint inhibitors (n = 38), infusion products for chimeric antigen receptor T cell therapies (n = 34) and pre-manufacture samples for chimeric antigen receptor T cell or tumor-infiltrating lymphocyte therapies (n = 84). Further, Tres identified FIBP, whose functions are largely unknown, as the top negative marker of tumor-resilient T cells across many solid tumor types. FIBP knockouts in murine and human donor CD8+ T cells significantly enhanced T cell-mediated cancer killing in in vitro co-cultures. Further, Fibp knockout in murine T cells potentiated the in vivo efficacy of adoptive cell transfer in the B16 tumor model. Fibp knockout T cells exhibit reduced cholesterol metabolism, which inhibits effector T cell function. These results demonstrate the utility of Tres in identifying biomarkers of T cell effectiveness and potential therapeutic targets for immunotherapies in solid tumors.
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18
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Ghaffari S, Upchurch-Ange K, Gimlin S, Tripathi T, Sluijter M, Middelburg J, van Hall T, Weidanz J. A Single-Domain TCR-like Antibody Selective for the Qa-1 b/Qdm Peptide Complex Enhances Tumoricidal Activity of NK Cells via Blocking the NKG2A Immune Checkpoint. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:2246-2255. [PMID: 35418467 DOI: 10.4049/jimmunol.2100790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
The NKG2A/HLA-E axis is an immune checkpoint that suppresses immune effector activity in the tumor microenvironment. In mice, the ligand for the NKG2A/CD94 inhibitory receptor is the nonclassical MHC molecule Qa-1b, the HLA-E ortholog, which presents the peptide AMAPRTLLL, referred to as Qdm (for Qa-1 determinant modifier). This dominant peptide is derived from the leader sequences of murine classical MHC class I encoded by the H-2D and -L loci. To broaden our understanding of Qa-1b/Qdm peptide complex biology and its tumor protective role, we identified a TCR-like Ab from a single domain VHH library using yeast surface display. The TCR-like Ab (EXX-1) binds only to the Qa-1b/Qdm peptide complex and not to Qa-1b alone or Qa-1b loaded with control peptides. Conversely, currently available Abs to Qa-1b bind independent of peptide loaded. Flow cytometric results revealed that EXX-1 selectively bound to Qa-1b/Qdm-positive B16F10, RMA, and TC-1 mouse tumor cells but only after pretreatment with IFN-γ; no binding was observed following genetic knockdown of Qa-1b or Qdm peptide. Furthermore, EXX-1 Ab blockade promoted NK cell-mediated tumor cell lysis in vitro. Our findings show that EXX-1 has exquisite binding specificity for the Qa-1b/Qdm peptide complex, making it a valuable research tool for further investigation of the Qa-1b/Qdm peptide complex expression and regulation in healthy and diseased cells and for evaluation as an immune checkpoint blocking Ab in syngeneic mouse tumor models.
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Affiliation(s)
- Soroush Ghaffari
- Department of Biology, College of Science, The University of Texas at Arlington, Arlington, TX
| | | | | | | | - Marjolein Sluijter
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands; and
| | - Jim Middelburg
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands; and
| | - Thorbald van Hall
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, the Netherlands; and
| | - Jon Weidanz
- Abexxa Biologics, Inc., Arlington, TX;
- College of Nursing and Health Innovation, The University of Texas at Arlington, Arlington, TX
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19
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Chung DC, Jacquelot N, Ghaedi M, Warner K, Ohashi PS. Innate Lymphoid Cells: Role in Immune Regulation and Cancer. Cancers (Basel) 2022; 14:cancers14092071. [PMID: 35565201 PMCID: PMC9102917 DOI: 10.3390/cancers14092071] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Innate lymphoid cells (ILCs) are an emerging family of effector cells known to play a major role in innate defenses against pathogens, lymphoid organogenesis, tissue repair, and homeostasis. They are positioned strategically within tissues to provide the first line of defence and shape the ensuing adaptive immune cell response. Recent evidence suggests that ILCs contribute to immune regulation in different diseases, including cancer, and can have significant impact on disease outcome. In this review, we highlight the immunosuppressive roles of ILCs in cancer that inhibit effective immune surveillance and anti-tumour response. Abstract Immune regulation is composed of a complex network of cellular and molecular pathways that regulate the immune system and prevent tissue damage. It is increasingly clear that innate lymphoid cells (ILCs) are also armed with immunosuppressive capacities similar to well-known immune regulatory cells (i.e., regulatory T cells). In cancer, immunoregulatory ILCs have been shown to inhibit anti-tumour immune response through various mechanisms including: (a) direct suppression of anti-tumour T cells or NK cells, (b) inhibiting T-cell priming, and (c) promoting other immunoregulatory cells. To provide a framework of understanding the role of immunosuppressive ILCs in the context of cancer, we first outline a brief history and challenges related to defining immunosuppressive ILCs. Furthermore, we focus on the mechanisms of ILCs in suppressing anti-tumour immunity and consequentially promoting tumour progression.
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Affiliation(s)
- Douglas C. Chung
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; (N.J.); (M.G.); (K.W.)
- Correspondence: (D.C.C.); (P.S.O.)
| | - Nicolas Jacquelot
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; (N.J.); (M.G.); (K.W.)
| | - Maryam Ghaedi
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; (N.J.); (M.G.); (K.W.)
| | - Kathrin Warner
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; (N.J.); (M.G.); (K.W.)
| | - Pamela S. Ohashi
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; (N.J.); (M.G.); (K.W.)
- Correspondence: (D.C.C.); (P.S.O.)
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20
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Harnessing Natural Killer Cells in Non-Small Cell Lung Cancer. Cells 2022; 11:cells11040605. [PMID: 35203256 PMCID: PMC8869885 DOI: 10.3390/cells11040605] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/30/2022] [Accepted: 02/04/2022] [Indexed: 02/04/2023] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide. There are two main subtypes: small cell lung cancer (SCLC), and non-small cell lung cancer (NSCLC). NSCLC accounts for 85% of lung cancer diagnoses. Early lung cancer very often has no specific symptoms, and many patients present with late stage disease. Despite the various treatments currently available, many patients experience tumor relapse or develop therapeutic resistance, highlighting the need for more effective therapies. The development of immunotherapies has revolutionized the cancer treatment landscape by enhancing the body’s own immune system to fight cancer. Natural killer (NK) cells are crucial anti-tumor immune cells, and their exclusion from the tumor microenvironment is associated with poorer survival. It is well established that NK cell frequencies and functions are impaired in NSCLC; thus, placing NK cell-based immunotherapies as a desirable therapeutic concept for this malignancy. Immunotherapies such as checkpoint inhibitors are transforming outcomes for NSCLC. This review explores the current treatment landscape for NSCLC, the role of NK cells and their dysfunction in the cancer setting, the advancement of NK cell therapies, and their future utility in NSCLC.
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21
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Guo X, Fang Y, Guo C, Jia Q, Chi Z, Li J, Qin R, Tian J, Fan R. Qa-1b functions as an oncogenic factor in mouse melanoma cells. J Dermatol Sci 2022; 105:159-169. [DOI: 10.1016/j.jdermsci.2022.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/25/2022] [Accepted: 02/02/2022] [Indexed: 12/20/2022]
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22
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Khani L, Jazayeri MH, Nedaeinia R, Bozorgmehr M, Nabavi SM, Ferns GA. The frequencies of peripheral blood CD5 +CD19 + B cells, CD3 -CD16 +CD56 + NK, and CD3 +CD56 + NKT cells and serum interleukin-10 in patients with multiple sclerosis and neuromyelitis optica spectrum disorder. ALLERGY, ASTHMA, AND CLINICAL IMMUNOLOGY : OFFICIAL JOURNAL OF THE CANADIAN SOCIETY OF ALLERGY AND CLINICAL IMMUNOLOGY 2022; 18:5. [PMID: 35031055 PMCID: PMC8760701 DOI: 10.1186/s13223-021-00596-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 09/02/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Multiple sclerosis (MS) and neuromyelitis optica syndrome disease (NMOSD) are inflammatory diseases of the central nervous system. The pathogenesis and treatments for these two conditions are very different. Natural killer (NK) and natural killer T (NKT) cells are immune cells with an important role in shaping the immune response. B cells are involved in antigen presentation as well as antibody and cytokine production. There is conflicting evidence of the roles of NK, NKT, and B cells in the two conditions. We aimed to compare the frequency of CD3-CD16+CD56+NK, CD3+ CD56+ NKT, and CD5+CD19+ B cells in the peripheral blood and serum Interleukin-10 (IL-10) in patients with MS and NMOSD. METHODS CD19+CD5+ B, CD3- CD16+CD56+ NK, and CD3+CD56+ NKT cells were quantitated by flow cytometry in 15 individuals with Interferon-Beta (IFN-β) treated relapsing-remitting MS (RRMS), 15 untreated RRMS, and 15 NMOSD patients as well as 30 healthy controls (HC). Serum IL-10 was measured using an enzyme-linked immunosorbent assay (ELISA). RESULTS The percentage of CD3-CD56+CD16+ NK cells in the peripheral blood of IFN-treated MS (1.81 ± 0.87) was significantly lower than for untreated RRMS (4.74 ± 1.80), NMOSD (4.64 ± 1.26) and HC (5.83 ± 2.19) (p < 0.0001). There were also differences for the percentage of CD3-CD16+ and CD3-CD56+ cells (p < 0.001 and p < 0.0007; respectively). IFN-treated RRMS (2.89 ± 1.51) had the lowest proportion of CD3+CD56+ among the study groups (p < 0.002). Untreated RRMS (5.56 ± 3.04) and NMOSD (5.47 ± 1.24) had higher levels of CD3+CD56+ than the HC (3.16 ± 1.98). The mean percentage of CD19+CD5+ B cells in the peripheral blood of untreated RRMS patients (1.32 ± 0.67) was higher compared to the patients with NMOSD (0.30 ± 0.20), HC (0.5 ± 0.22) and IFN-treated RRMS (0.81 ± 0.17) (p < 0.0001). Serum interleukin-10 was significantly higher in the IFN-treated RRMS (8.06 ± 5.39) and in HC (8.38 ± 2.84) compared to untreated RRMS (5.07 ± 1.44) and the patients with NMOSD (5.33 ± 2.56) (p < 0.003). CONCLUSIONS The lower proportion of CD3-CD56+ CD16+ NK and CD3+CD56+ cells in peripheral blood of IFN-treated RRMS compared to other groups suggests the importance of immunomodulation in patients with RRMS disorder. Based on the differences in CD19+CD5+ B cells and serum IL-10 between patients and HC, supplementary assessments could be of value in clarifying their roles in autoimmunity.
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Affiliation(s)
- Leila Khani
- Department of Immunology, School of Medicine, Iran University of Medical Science, Shahid Hemmat Highway, P.O Box 14665-354, 14496-14535, Tehran, Iran
| | - Mir Hadi Jazayeri
- Department of Immunology, School of Medicine, Iran University of Medical Science, Shahid Hemmat Highway, P.O Box 14665-354, 14496-14535, Tehran, Iran.
- Immunology Research Center, Iran University of Medical Science, Shahid Hemmat Highway, P.O Box 14665-354, 14496-14535, Tehran, Iran.
| | - Reza Nedaeinia
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahmood Bozorgmehr
- Oncopathology Research Center, Iran University of Medical Science, Tehran, Iran
| | - Seyed Masood Nabavi
- Department of Regenerative Biomedicine, Cell Science Research Center, Neuroscience and Cognition Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton and Sussex Medical School, Falmer, Brighton, BN1 9PH, Sussex, UK
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23
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Zhang Y, Grazda R, Yang Q. Interaction Between Innate Lymphoid Cells and the Nervous System. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1365:135-148. [DOI: 10.1007/978-981-16-8387-9_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Jegatheeswaran S, Mathews JA, Crome SQ. Searching for the Elusive Regulatory Innate Lymphoid Cell. THE JOURNAL OF IMMUNOLOGY 2021; 207:1949-1957. [PMID: 34607908 DOI: 10.4049/jimmunol.2100661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 08/06/2021] [Indexed: 12/26/2022]
Abstract
The complex nature of the innate lymphoid cell (ILC) family and wide range of ILC effector functions has been the focus of intense research. In addition to important roles in host defense, ILCs have central roles in maintaining tissue homeostasis and can promote immune tolerance. Alterations within the microenvironment can impart new functions on ILCs, and can even induce conversion to a distinct ILC family member. Complicating current definitions of ILCs are recent findings of distinct regulatory ILC populations that limit inflammatory responses or recruit other immunosuppressive cells such as regulatory T cells. Whether these populations are distinct ILC family members or rather canonical ILCs that exhibit immunoregulatory functions due to microenvironment signals has been the subject of much debate. In this review, we highlight studies identifying regulatory populations of ILCs that span regulatory NK-like cells, regulatory ILCs, and IL-10-producing ILC2s.
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Affiliation(s)
- Sinthuja Jegatheeswaran
- Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; and.,Toronto General Hospital Research Institute, Ajmera Transplant Centre, University Health Network, Toronto, Ontario, Canada
| | - Jessica A Mathews
- Toronto General Hospital Research Institute, Ajmera Transplant Centre, University Health Network, Toronto, Ontario, Canada
| | - Sarah Q Crome
- Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada; and .,Toronto General Hospital Research Institute, Ajmera Transplant Centre, University Health Network, Toronto, Ontario, Canada
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25
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Sierra JM, Secchiari F, Nuñez SY, Iraolagoitia XLR, Ziblat A, Friedrich AD, Regge MV, Santilli MC, Torres NI, Gantov M, Trotta A, Ameri C, Vitagliano G, Pita HR, Rico L, Rovegno A, Richards N, Domaica CI, Zwirner NW, Fuertes MB. Tumor-Experienced Human NK Cells Express High Levels of PD-L1 and Inhibit CD8 + T Cell Proliferation. Front Immunol 2021; 12:745939. [PMID: 34616407 PMCID: PMC8488336 DOI: 10.3389/fimmu.2021.745939] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/01/2021] [Indexed: 11/13/2022] Open
Abstract
Natural Killer (NK) cells play a key role in cancer immunosurveillance. However, NK cells from cancer patients display an altered phenotype and impaired effector functions. In addition, evidence of a regulatory role for NK cells is emerging in diverse models of viral infection, transplantation, and autoimmunity. Here, we analyzed clear cell renal cell carcinoma (ccRCC) datasets from The Cancer Genome Atlas (TCGA) and observed that a higher expression of NK cell signature genes is associated with reduced survival. Analysis of fresh tumor samples from ccRCC patients unraveled the presence of a high frequency of tumor-infiltrating PD-L1+ NK cells, suggesting that these NK cells might exhibit immunoregulatory functions. In vitro, PD-L1 expression was induced on NK cells from healthy donors (HD) upon direct tumor cell recognition through NKG2D and was further up-regulated by monocyte-derived IL-18. Moreover, in vitro generated PD-L1hi NK cells displayed an activated phenotype and enhanced effector functions compared to PD-L1- NK cells, but simultaneously, they directly inhibited CD8+ T cell proliferation in a PD-L1-dependent manner. Our results suggest that tumors might drive the development of PD-L1-expressing NK cells that acquire immunoregulatory functions in humans. Hence, rational manipulation of these regulatory cells emerges as a possibility that may lead to improved anti-tumor immunity in cancer patients.
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Affiliation(s)
- Jessica M Sierra
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Florencia Secchiari
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Sol Y Nuñez
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Ximena L Raffo Iraolagoitia
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Andrea Ziblat
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Adrián D Friedrich
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Inmunología, Buenos Aires, Argentina
| | - María V Regge
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - M Cecilia Santilli
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Nicolás I Torres
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Mariana Gantov
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Aldana Trotta
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | | | | | | | - Luis Rico
- Hospital Alemán, Buenos Aires, Argentina
| | - Agustín Rovegno
- Centro de Educación Médica e Investigaciones Clínicas "Norberto Quirno" (CEMIC), Buenos Aires, Argentina
| | - Nicolás Richards
- Centro de Educación Médica e Investigaciones Clínicas "Norberto Quirno" (CEMIC), Buenos Aires, Argentina
| | - Carolina I Domaica
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Norberto W Zwirner
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mercedes B Fuertes
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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26
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Webb TJ. Inclusion criteria: how NK cells gain access to T cells. J Clin Invest 2021; 131:e152054. [PMID: 34523608 DOI: 10.1172/jci152054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Natural killer (NK) cells play an important role in host defense against viral infections and malignancy, and their role for regulating other components of the antiviral response is being investigated. In this issue of the JCI, Ali et al. examine the mechanisms by which NK cells migrate into the white pulp and mediate suppression of virus-specific T cells. Herein, the authors show that an acute lymphocytic choriomeningitis virus (LCMV) infection induced a potent type I IFN (IFN-I) response that resulted in the expression of chemokine receptor CXCR3 ligands and permitted NK cell trafficking to T cell zones. Collectively, these findings have broad implications for vaccination strategies and warrant further investigation into the transcriptomic profiles of these regulatory NK cells.
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27
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Koppe C, Hoene A, Walschus U, Finke B, Testrich H, Pohl C, Brandt N, Patrzyk M, Meichsner J, Nebe B, Schlosser M. Local Inflammatory Response after Intramuscularly Implantation of Anti-Adhesive Plasma-Fluorocarbon-Polymer Coated Ti6AI4V Discs in Rats. Polymers (Basel) 2021; 13:polym13162684. [PMID: 34451224 PMCID: PMC8399026 DOI: 10.3390/polym13162684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/23/2021] [Accepted: 07/29/2021] [Indexed: 12/23/2022] Open
Abstract
Orthopaedic implants and temporary osteosynthesis devices are commonly based on Titanium (Ti). For short-term devices, cell-material contact should be restricted for easy removal after bone healing. This could be achieved with anti-adhesive plasma-fluorocarbon-polymer (PFP) films created by low-temperature plasma processes. Two different PFP thin film deposition techniques, microwave (MW) and radiofrequency (RF) discharge plasma, were applied to receive smooth, hydrophobic surfaces with octafluoropropane (C3F8) or hexafluorohexane (C6F6) as precursors. This study aimed at examining the immunological local tissue reactions after simultaneous intramuscular implantation of four different Ti samples, designated as MW-C3F8, MW-C6F6, RF-C3F8 and Ti-controls, in rats. A differentiated morphometric evaluation of the inflammatory reaction was conducted by immunohistochemical staining of CD68+ macrophages, CD163+ macrophages, MHC class II-positive cells, T lymphocytes, CD25+ regulatory T lymphocytes, NK cells and nestin-positive cells in cryosections of surrounding peri-implant tissue. Tissue samples were obtained on days 7, 14 and 56 for investigating the acute and chronical inflammation (n = 8 rats/group). Implants with a radiofrequency discharge plasma (RF-C3F8) coating exhibited a favorable short- and long-term immune/inflammatory response comparable to Ti-controls. This was also demonstrated by the significant decrease in pro-inflammatory CD68+ macrophages, possibly downregulated by significantly increasing regulatory T lymphocytes.
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Affiliation(s)
- Charlotte Koppe
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Andreas Hoene
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Uwe Walschus
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Birgit Finke
- Leibniz Institute for Plasma Science and Technology (INP), 17487 Greifswald, Germany; (B.F.); (H.T.)
| | - Holger Testrich
- Leibniz Institute for Plasma Science and Technology (INP), 17487 Greifswald, Germany; (B.F.); (H.T.)
| | - Christopher Pohl
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Nico Brandt
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Maciej Patrzyk
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Jürgen Meichsner
- Institute of Physics, University of Greifswald, 17487 Greifswald, Germany;
| | - Barbara Nebe
- Department of Cell Biology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Michael Schlosser
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
- Correspondence: ; Tel.: +49-3834-8680422
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28
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Ferez M, Knudson CJ, Lev A, Wong EB, Alves-Peixoto P, Tang L, Stotesbury C, Sigal LJ. Viral infection modulates Qa-1b in infected and bystander cells to properly direct NK cell killing. J Exp Med 2021; 218:e20201782. [PMID: 33765134 PMCID: PMC8006856 DOI: 10.1084/jem.20201782] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 01/13/2021] [Accepted: 02/19/2021] [Indexed: 11/12/2022] Open
Abstract
Natural killer (NK) cell activation depends on the signaling balance of activating and inhibitory receptors. CD94 forms inhibitory receptors with NKG2A and activating receptors with NKG2E or NKG2C. We previously demonstrated that CD94-NKG2 on NK cells and its ligand Qa-1b are important for the resistance of C57BL/6 mice to lethal ectromelia virus (ECTV) infection. We now show that NKG2C or NKG2E deficiency does not increase susceptibility to lethal ECTV infection, but overexpression of Qa-1b in infected cells does. We also demonstrate that Qa-1b is down-regulated in infected and up-regulated in bystander inflammatory monocytes and B cells. Moreover, NK cells activated by ECTV infection kill Qa-1b-deficient cells in vitro and in vivo. Thus, during viral infection, recognition of Qa-1b by activating CD94/NKG2 receptors is not critical. Instead, the levels of Qa-1b expression are down-regulated in infected cells but increased in some bystander immune cells to respectively promote or inhibit their killing by activated NK cells.
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Affiliation(s)
- Maria Ferez
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA
| | - Cory J. Knudson
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA
| | - Avital Lev
- Fox Chase Cancer Center, Philadelphia, PA
| | - Eric B. Wong
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA
| | - Pedro Alves-Peixoto
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA
- Life and Health Sciences Research Institute, School of Medicine, University of Minho, Braga, Portugal
- Life and Health Sciences Research Institute/Research Group in Biomaterials, Biodegradables and Biomimetics-Portugal Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Lingjuan Tang
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA
| | - Colby Stotesbury
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA
| | - Luis J. Sigal
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA
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29
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Kumar V. Innate Lymphoid Cells and Adaptive Immune Cells Cross-Talk: A Secret Talk Revealed in Immune Homeostasis and Different Inflammatory Conditions. Int Rev Immunol 2021; 40:217-251. [PMID: 33733998 DOI: 10.1080/08830185.2021.1895145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The inflammatory immune response has evolved to protect the host from different pathogens, allergens, and endogenous death or damage-associated molecular patterns. Both innate and adaptive immune components are crucial in inducing an inflammatory immune response depending on the stimulus type and its duration of exposure or the activation of the primary innate immune response. As the source of inflammation is removed, the aggravated immune response comes to its homeostatic level. However, the failure of the inflammatory immune response to subside to its normal level generates chronic inflammatory conditions, including autoimmune diseases and cancer. Innate lymphoid cells (ILCs) are newly discovered innate immune cells, which are present in abundance at mucosal surfaces, including lungs, gastrointestinal tract, and reproductive tract. Also, they are present in peripheral blood circulation, skin, and lymph nodes. They play a crucial role in generating the pro-inflammatory immune response during diverse conditions. On the other hand, adaptive immune cells, including different types of T and B cells are major players in the pathogenesis of autoimmune diseases (type 1 diabetes mellitus, rheumatoid arthritis, psoriasis, and systemic lupus erythematosus, etc.) and cancers. Thus the article is designed to discuss the immunological role of different ILCs and their interaction with adaptive immune cells in maintaining the immune homeostasis, and during inflammatory autoimmune diseases along with other inflammatory conditions (excluding pathogen-induced inflammation), including cancer, graft-versus-host diseases, and human pregnancy.
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Affiliation(s)
- Vijay Kumar
- Children's Health Queensland Clinical Unit, School of Clinical Medicine, Faculty of Medicine, Mater Research, University of Queensland, St Lucia, Brisbane, Queensland, Australia.,School of Biomedical Sciences, Faculty of Medicine, University of Queensland, St Lucia, Brisbane, Queensland, Australia
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30
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Liu M, Liang S, Zhang C. NK Cells in Autoimmune Diseases: Protective or Pathogenic? Front Immunol 2021; 12:624687. [PMID: 33777006 PMCID: PMC7994264 DOI: 10.3389/fimmu.2021.624687] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 02/22/2021] [Indexed: 12/12/2022] Open
Abstract
Autoimmune diseases generally result from the loss of self-tolerance (i.e., failure of the immune system to distinguish self from non-self), and are characterized by autoantibody production and hyperactivation of T cells, which leads to damage of specific or multiple organs. Thus, autoimmune diseases can be classified as organ-specific or systemic. Genetic and environmental factors contribute to the development of autoimmunity. Recent studies have demonstrated the contribution of innate immunity to the onset of autoimmune diseases. Natural killer (NK) cells, which are key components of the innate immune system, have been implicated in the development of multiple autoimmune diseases such as systemic lupus erythematosus, type I diabetes mellitus, and autoimmune liver disease. However, NK cells have both protective and pathogenic roles in autoimmunity depending on the NK cell subset, microenvironment, and disease type or stage. In this work, we review the current knowledge of the varied roles of NK cell subsets in systemic and organic-specific autoimmune diseases and their clinical potential as therapeutic targets.
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Affiliation(s)
- Meifang Liu
- Key Lab for Immunology in Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - Shujuan Liang
- Key Lab for Immunology in Universities of Shandong Province, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - Cai Zhang
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Institute of Immunopharmaceutical Sciences, Shandong University, Jinan, China
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31
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Sugawara S, Manickam C, Reeves K. TRIGGERED: could refocused cell signaling be key to natural killer cell-based HIV immunotherapeutics? AIDS 2021; 35:165-176. [PMID: 33116071 PMCID: PMC7775286 DOI: 10.1097/qad.0000000000002743] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Natural killer (NK) cells are one of the critical innate immune effector cells that directly kill tumors and virus-infected cells, and modulate other immune cells including dendritic cells, CD4+ and CD8+ T cells. Signals from activating and inhibitory surface receptors orchestrate the regulatory and cytotoxic functions of NK cells. Although a number of surface receptors are involved, multiple signaling molecules are shared so that NK cell responses are synergistically regulated. Many pathogens and tumors evade NK cell responses by targeting NK cell signaling. Particularly in HIV/simian immunodeficiency virus (SIV) infection, the NK cell repertoire is diminished by changes in subsets of NK cells, expression of activating and inhibitory receptors, and intracellular signaling molecules. However, in-depth studies on intracellular signaling in NK cells in HIV/SIV infections remain limited. Checkpoint blockade and chimeric antigen receptor (CAR)-NK cells have demonstrated enhanced NK cell activities against tumors and viral infections. In addition, targeting intracellular signaling molecules by small molecules could also improve NK cell responses towards HIV/SIV infection in vivo. Therefore, further understanding of NK cell signaling including identification of key signaling molecules is crucial to maximize the efficacy of NK cell-based treatments. Herein, we review the current state of the literature and outline potential future avenues where optimized NK cells could be utilized in HIV-1 cure strategies and other immunotherapeutics in PLWH.
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Affiliation(s)
- Sho Sugawara
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Cordelia Manickam
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Keith Reeves
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Ragon Institute of Massachusetts General Hospital, MIT, and Harvard, Cambridge, MA
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32
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Yang Y, Day J, Souza-Fonseca Guimaraes F, Wicks IP, Louis C. Natural killer cells in inflammatory autoimmune diseases. Clin Transl Immunology 2021; 10:e1250. [PMID: 33552511 PMCID: PMC7850912 DOI: 10.1002/cti2.1250] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 01/11/2021] [Accepted: 01/14/2021] [Indexed: 12/12/2022] Open
Abstract
Natural killer (NK) cells are a specialised population of innate lymphoid cells (ILCs) that help control local immune responses. Through natural cytotoxicity, production of cytokines and chemokines, and migratory capacity, NK cells play a vital immunoregulatory role in the initiation and chronicity of inflammatory and autoimmune responses. Our understanding of their functional differences and contributions in disease settings is evolving owing to new genetic and functional murine proof-of-concept studies. Here, we summarise current understanding of NK cells in several classic autoimmune disorders, particularly in rheumatoid arthritis (RA), multiple sclerosis (MS), systemic lupus erythematosus (SLE) and type 1 diabetes mellitus (T1DM), but also less understood diseases such as idiopathic inflammatory myopathies (IIMs). A better understanding of how NK cells contribute to these autoimmune disorders may pave the way for NK cell-targeted therapeutics.
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Affiliation(s)
- Yuyan Yang
- Tsinghua University School of Medicine Beijing China.,Inflammation Division The Walter and Eliza Hall Institute of Medical Research Parkville VIC Australia
| | - Jessica Day
- Inflammation Division The Walter and Eliza Hall Institute of Medical Research Parkville VIC Australia.,Medical Biology University of Melbourne Melbourne VIC Australia.,Rheumatology Unit The Royal Melbourne Hospital Parkville VIC Australia
| | | | - Ian P Wicks
- Inflammation Division The Walter and Eliza Hall Institute of Medical Research Parkville VIC Australia.,Medical Biology University of Melbourne Melbourne VIC Australia.,Rheumatology Unit The Royal Melbourne Hospital Parkville VIC Australia
| | - Cynthia Louis
- Inflammation Division The Walter and Eliza Hall Institute of Medical Research Parkville VIC Australia.,Medical Biology University of Melbourne Melbourne VIC Australia
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Mimpen M, Muris AH, Rolf L, Gerlach O, Kuhle J, Hupperts R, Smolders J, Damoiseaux J. Prognostic value of natural killer cell/T cell ratios for disease activity in multiple sclerosis. Eur J Neurol 2020; 28:901-909. [PMID: 33326677 PMCID: PMC7898592 DOI: 10.1111/ene.14680] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 01/01/2023]
Abstract
Background and purpose Natural killer (NK) cells may play a role in multiple sclerosis (MS). Ratios of NK cells to CD4+ T cells have been proposed as a biomarker for the therapeutic effect of stem cell transplantation in MS. The objectives here were to explore the relevance of this ratio in MS patients by analysing NK and T cell subsets, as well as their prognostic value for disease activity. Methods Baseline peripheral blood mononuclear cells of 50 relapsing–remitting MS patients, participating in our vitamin D supplementation study (SOLARIUM), were analysed with flow cytometry. Disease activity was measured as new magnetic resonance imaging lesions, relapses and mean plasma neurofilament light chain levels after 48 weeks of follow‐up. Results The proportion of NK cells correlated negatively with CD4+ T cells (R = −0.335, p = 0.001) and interleukin 17A (IL‐17A+) CD4+ T cells (R = −0.203, p = 0.043). Participants with magnetic resonance imaging activity or relapses displayed lower NK/IL‐17A+ CD4+ T cell ratios (p =0.025 and p = 0.006, respectively). The NK/IL‐17A+ CD4+ T cell ratio correlated negatively with neurofilament light chain levels (R = −0.320, p = 0.050). Vitamin D supplementation did not affect these ratios. Conclusions Our data suggest a protective role of an expanded NK cell compartment compared to the CD4+ T cell subset fractions in relapsing–remitting MS patients. NK/CD4+ T cell ratios may be a prognostic biomarker for disease activity in MS.
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Affiliation(s)
- Max Mimpen
- School of Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - Anne-Hilde Muris
- School of Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - Linda Rolf
- School of Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
| | - Oliver Gerlach
- Department of Neurology, Zuyderland Medical Center, Sittard, The Netherlands
| | - Jens Kuhle
- Department of Neurology, University Hospital Basel, Basel, Switzerland
| | - Raymond Hupperts
- School of Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands.,Department of Neurology, Zuyderland Medical Center, Sittard, The Netherlands
| | - Joost Smolders
- MS Center ErasMS, Departments of Neurology and Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Neuroimmunology, Netherlands Institute for Neuroscience, Amsterdam, The Netherlands
| | - Jan Damoiseaux
- Central Diagnostic Laboratory, Maastricht University Medical Center, Maastricht, The Netherlands
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Apraiz A, Benedicto A, Marquez J, Agüera-Lorente A, Asumendi A, Olaso E, Arteta B. Innate Lymphoid Cells in the Malignant Melanoma Microenvironment. Cancers (Basel) 2020; 12:cancers12113177. [PMID: 33138017 PMCID: PMC7692065 DOI: 10.3390/cancers12113177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/22/2020] [Accepted: 10/26/2020] [Indexed: 12/21/2022] Open
Abstract
Simple Summary Innate lymphoid cells (ILCs) are the innate counterparts of adaptive immune cells. Emerging data indicate that they are also key players in the progression of multiple tumors. In this review we briefly describe ILCs’ functions in the skin, lungs and liver. Next, we analyze the role of ILCs in primary cutaneous melanoma and in its most frequent and deadly metastases, those in liver and lung. We focus on their dual anti– and pro-tumoral functions, depending on the cross-interactions among them and with the surrounding stromal cells that form the tumor microenvironment (TME) in each organ. Next, we detail the role of extracellular vesicles secreted to the TME by ILCs and melanoma on both cell populations. We conclude that the identification of markers and tools to allow the modulation of individual ILC subsets, in addition to the development of standardized protocols, is essential for addressing the therapeutic modulation of ILCs. Abstract The role of innate lymphoid cells (ILCs) in cancer progression has been uncovered in recent years. ILCs are classified as Type 1, Type 2, and Type 3 ILCs, which are characterized by the transcription factors necessary for their development and the cytokines and chemokines they produce. ILCs are a highly heterogeneous cell population, showing both anti– and protumoral properties and capable of adapting their phenotypes and functions depending on the signals they receive from their surrounding environment. ILCs are considered the innate counterparts of the adaptive immune cells during physiological and pathological processes, including cancer, and as such, ILC subsets reflect different types of T cells. In cancer, each ILC subset plays a crucial role, not only in innate immunity but also as regulators of the tumor microenvironment. ILCs’ interplay with other immune and stromal cells in the metastatic microenvironment further dictates and influences this dichotomy, further strengthening the seed-and-soil theory and supporting the formation of more suitable and organ-specific metastatic environments. Here, we review the present knowledge on the different ILC subsets, focusing on their interplay with components of the tumor environment during the development of primary melanoma as well as on metastatic progression to organs, such as the liver or lung.
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35
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Zwirner NW, Domaica CI, Fuertes MB. Regulatory functions of NK cells during infections and cancer. J Leukoc Biol 2020; 109:185-194. [PMID: 33095941 DOI: 10.1002/jlb.3mr0820-685r] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 08/16/2020] [Accepted: 09/24/2020] [Indexed: 01/02/2023] Open
Abstract
After recognition, NK cells can kill susceptible target cells through perforin-dependent mechanisms or by inducing death receptor-mediated apoptosis, and they can also secrete cytokines that are pivotal for immunomodulation. Despite the critical role as effector cells against tumors and virus-infected cells, NK cells have been implicated in the regulation of T cell-mediated responses in different models of autoimmunity, transplantation, and viral infections. Here, we review the mechanisms described for NK cell-mediated inhibition of adaptive immune responses, with spotlight on the emerging evidence of their regulatory role that shapes antitumor immune responses.
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Affiliation(s)
- Norberto W Zwirner
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carolina I Domaica
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Mercedes B Fuertes
- Laboratorio de Fisiopatología de la Inmunidad Innata, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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36
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Reighard SD, Krishnamurthy D, Cevik H, Ochayon DE, Ali A, Seelamneni H, Brunner HI, Waggoner SN. Immunomodulatory effects of cytokine-induced expansion of cytotoxic lymphocytes in a mouse model of lupus-like disease. Cytotherapy 2020; 23:37-45. [PMID: 33092988 DOI: 10.1016/j.jcyt.2020.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 08/09/2020] [Accepted: 09/06/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND AIMS Certain therapies (e.g., daclizumab) that promote expansion of natural killer (NK) cells are associated with clinical amelioration of disease in the context of multiple sclerosis and associated mouse models. The clinical benefits are putatively attributable to an enhanced capacity of NK cells to kill activated pathogenic T cells. Whether a parallel approach will also be effective in systemic lupus erythematosus (lupus), a multi-organ autoimmune disease driven by aberrant responses of self-reactive T and B cells, is unclear. METHODS In the present study, the authors assess the therapeutic impact of IL-2- and IL-15-based strategies for expanding NK cells on measures of lupus-like disease in a mouse model. RESULTS Unexpectedly, cytokine-mediated expansion of cytotoxic lymphocytes aggravated immunological measures of lupus-like disease. Depletion studies revealed that the negative effects of these cytokine-based regimens can largely be attributed to expansion of CD8 T cells rather than NK cells. CONCLUSIONS These results provoke caution in the use of cytokine-based therapeutics to treat co-morbid cancers in patients with lupus and highlight the need for new methods to selectively expand NK cells to further assess their clinical value in autoimmune disease.
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Affiliation(s)
- Seth D Reighard
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA; Immunology Graduate Training Program, Cincinnati, Ohio, USA
| | - Durga Krishnamurthy
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Hilal Cevik
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Molecular and Developmental Biology Graduate Program, Cincinnati, Ohio, USA
| | - David E Ochayon
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Ayad Ali
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA; Immunology Graduate Training Program, Cincinnati, Ohio, USA
| | - Harsha Seelamneni
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Hermine I Brunner
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA; Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Stephen N Waggoner
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA; Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA; Immunology Graduate Training Program, Cincinnati, Ohio, USA; Molecular and Developmental Biology Graduate Program, Cincinnati, Ohio, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
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37
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Sheng L, Mu Q, Wu X, Yang S, Zhu H, Wang J, Lai Y, Wu H, Sun Y, Hu Y, Fu H, Wang Y, Xu K, Sun Y, Zhang Y, Zhang P, Zhou M, Lai B, Xu Z, Gao M, Zhang Y, Ouyang G. Cytotoxicity of Donor Natural Killer Cells to Allo-Reactive T Cells Are Related With Acute Graft-vs.-Host-Disease Following Allogeneic Stem Cell Transplantation. Front Immunol 2020; 11:1534. [PMID: 32849519 PMCID: PMC7411138 DOI: 10.3389/fimmu.2020.01534] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/10/2020] [Indexed: 12/13/2022] Open
Abstract
Objectives: The mechanism and immunoregulatory role of human natural killer (NK) cells in acute graft-vs.-host-disease (aGVHD) remains unclear. This study quantitatively analyzed the cytotoxicity of donor NK cells toward allo-reactive T cells, and investigated their relationship with acute GVHD (aGVHD). Methods: We evaluated NK dose, subgroup, and receptor expression in allografts from 98 patients who underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT). A CD107a degranulating assay was used as a quantitative detection method for the cytotoxic function of donor NK cells to allo-reactive T cells. In antibody-blocking assay, NK cells were pre-treated with anti-DNAM-1(CD226), anti-NKG2D, anti-NKP46, or anti-NKG-2A monoclonal antibodies (mAbs) before the degranulating assay. Results: NK cells in allografts effectively inhibited auto-T cell proliferation following alloantigen stimulation, selectively killing alloantigen activated T cells. NKG2A− NK cell subgroups showed higher levels of CD107a degranulation toward activated T cells, when compared with NKG2A− subgroups. Blocking NKG2D or CD226 (DNAM-1) led to significant reductions in degranulation, whereas NKG2A block resulted in increased NK degranulation. Donor NK cells in the aGVHD group expressed lower levels of NKG2D and CD226, higher levels of NKG2A, and showed higher CD107a degranulation levels when compared with NK cells in the non-aGVHD group. Using univariate analysis, higher NK degranulation activities in allografts (CD107ahigh) were correlated with a decreased risk in grade I–IV aGVHD (hazard risk [HR] = 0.294; P < 0.0001), grade III–IV aGVHD (HR = 0.102; P < 0.0001), and relapse (HR = 0.157; P = 0.015), and improved overall survival (HR = 0.355; P = 0.028) after allo-HSCT. Multivariate analyses showed that higher NK degranulation activities (CD107ahigh) in allografts were independent risk factors for grades, I–IV aGVHD (HR = 0.357; P = 0.002), and grades III–IV aGVHD (HR = 0.13; P = 0.009). Conclusions: These findings reveal that the degranulation activity of NK in allografts toward allo-activated T cells was associated with the occurrence and the severity of aGVHD, after allogeneic stem cell transplantation. This suggested that cytotoxicity of donor NK cells to allo-reactive T cells have important roles in aGVHD regulation.
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Affiliation(s)
- Lixia Sheng
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Qitian Mu
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Xiaoqing Wu
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Shujun Yang
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Huiling Zhu
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Jiaping Wang
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Yanli Lai
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Hao Wu
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Ye Sun
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Yongxian Hu
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Huarui Fu
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi Wang
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Kaihong Xu
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Yongcheng Sun
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Yanli Zhang
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Ping Zhang
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Miao Zhou
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Binbin Lai
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Zhijuan Xu
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Minjie Gao
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Yi Zhang
- Department of Hematology, Ningbo First Hospital, Ningbo, China
| | - Guifang Ouyang
- Department of Hematology, Ningbo First Hospital, Ningbo, China
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Ivanova DL, Krempels R, Denton SL, Fettel KD, Saltz GM, Rach D, Fatima R, Mundhenke T, Materi J, Dunay IR, Gigley JP. NK Cells Negatively Regulate CD8 T Cells to Promote Immune Exhaustion and Chronic Toxoplasma gondii Infection. Front Cell Infect Microbiol 2020; 10:313. [PMID: 32733814 PMCID: PMC7360721 DOI: 10.3389/fcimb.2020.00313] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 05/25/2020] [Indexed: 12/19/2022] Open
Abstract
NK cells regulate CD4+ and CD8+ T cells in acute viral infection, vaccination, and the tumor microenvironment. NK cells also become exhausted in chronic activation settings. The mechanisms causing these ILC responses and their impact on adaptive immunity are unclear. CD8+ T cell exhaustion develops during chronic Toxoplasma gondii (T. gondii) infection resulting in parasite reactivation and death. How chronic T. gondii infection impacts the NK cell compartment is not known. We demonstrate that NK cells do not exhibit hallmarks of exhaustion. Their numbers are stable and they do not express high PD1 or LAG3. NK cell depletion with anti-NK1.1 is therapeutic and rescues chronic T. gondii infected mice from CD8+ T cell exhaustion dependent death, increases survival after lethal secondary challenge and alters cyst burdens in brain. Anti-NK1.1 treatment increased polyfunctional CD8+ T cell responses in spleen and brain and reduced CD8+ T cell apoptosis in spleen. Chronic T. gondii infection promotes the development of a modified NK cell compartment, which does not exhibit normal NK cell characteristics. NK cells are Ly49 and TRAIL negative and are enriched for expression of CD94/NKG2A and KLRG1. These NK cells are found in both spleen and brain. They do not produce IFNγ, are IL-10 negative, do not increase PDL1 expression, but do increase CD107a on their surface. Based on the NK cell receptor phenotype we observed NKp46 and CD94-NKG2A cognate ligands were measured. Activating NKp46 (NCR1-ligand) ligand increased and NKG2A ligand Qa-1b expression was reduced on CD8+ T cells. Blockade of NKp46 rescued the chronically infected mice from death and reduced the number of NKG2A+ cells. Immunization with a single dose non-persistent 100% protective T. gondii vaccination did not induce this cell population in the spleen, suggesting persistent infection is essential for their development. We hypothesize chronic T. gondii infection induces an NKp46 dependent modified NK cell population that reduces functional CD8+ T cells to promote persistent parasite infection in the brain. NK cell targeted therapies could enhance immunity in people with chronic infections, chronic inflammation and cancer.
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Affiliation(s)
- Daria L Ivanova
- Molecular Biology, University of Wyoming, Laramie, WY, United States.,Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Ryan Krempels
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Stephen L Denton
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Kevin D Fettel
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Giandor M Saltz
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - David Rach
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Rida Fatima
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Tiffany Mundhenke
- Molecular Biology, University of Wyoming, Laramie, WY, United States.,Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Joshua Materi
- Molecular Biology, University of Wyoming, Laramie, WY, United States
| | - Ildiko R Dunay
- Institute of Inflammation and Neurodegeneration, Otto-von-Guericke Universität Magdeburg, Magdeburg, Germany
| | - Jason P Gigley
- Molecular Biology, University of Wyoming, Laramie, WY, United States
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Kumar V. Innate lymphoid cell and adaptive immune cell cross-talk: A talk meant not to forget. J Leukoc Biol 2020; 108:397-417. [PMID: 32557732 DOI: 10.1002/jlb.4mir0420-500rrr] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 04/28/2020] [Accepted: 05/04/2020] [Indexed: 12/17/2022] Open
Abstract
Innate lymphoid cells (ILCs) are a relatively new class of innate immune cells with phenotypical characters of lymphocytes but genotypically or functionally behave as typical innate immune cells. They have been classically divided into 3 groups (group 1 ILCs or ILC1s, group 2 ILCs or ILC2s, and group 3 ILCs or ILC3s). They serve as the first line of defense against invading pathogens and allergens at mucosal surfaces. The adaptive immune response works effectively in association with innate immunity as innate immune cells serve as APCs to directly stimulate the adaptive immune cells (various sets of T and B cells). Additionally, innate immune cells also secrete various effector molecules, including cytokines or chemokines impacting the function, differentiation, proliferation, and reprogramming among adaptive immune cells to maintain immune homeostasis. Only superantigens do not require their processing by innate immune cells as they are recognized directly by T cells and B cells. Thus, a major emphasis of the current article is to describe the cross-talk between different ILCs and adaptive immune cells during different conditions varying from normal physiological situations to different infectious diseases to allergic asthma.
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Affiliation(s)
- V Kumar
- Children's Health Queensland Clinical Unit, School of Clinical Medicine, Faculty of Medicine, Mater Research, University of Queensland, Brisbane, Queensland, Australia.,School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
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40
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Ebihara T. Dichotomous Regulation of Acquired Immunity by Innate Lymphoid Cells. Cells 2020; 9:cells9051193. [PMID: 32403291 PMCID: PMC7290502 DOI: 10.3390/cells9051193] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/04/2020] [Accepted: 05/08/2020] [Indexed: 12/12/2022] Open
Abstract
The concept of innate lymphoid cells (ILCs) includes both conventional natural killer (NK) cells and helper ILCs, which resemble CD8+ killer T cells and CD4+ helper T cells in acquired immunity, respectively. Conventional NK cells are migratory cytotoxic cells that find tumor cells or cells infected with microbes. Helper ILCs are localized at peripheral tissue and are responsible for innate helper-cytokine production. Helper ILCs are classified into three subpopulations: TH1-like ILC1s, TH2-like ILC2s, and TH17/TH22-like ILC3s. Because of the functional similarities between ILCs and T cells, ILCs can serve as an innate component that augments each corresponding type of acquired immunity. However, the physiological functions of ILCs are more plastic and complicated than expected and are affected by environmental cues and types of inflammation. Here, we review recent advances in understanding the interaction between ILCs and acquired immunity, including T- and B-cell responses at various conditions. Immune suppressive activities by ILCs in particular are discussed in comparison to their immune stimulatory effects to gain precise knowledge of ILC biology and the physiological relevance of ILCs in human diseases.
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Affiliation(s)
- Takashi Ebihara
- Department of Medical Biology, Akita University Graduate School of Medicine Affiliation, 1-1-1 Hondo, Akita 010-8543, Japan
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41
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Regulatory CD8 T cells that recognize Qa-1 expressed by CD4 T-helper cells inhibit rejection of heart allografts. Proc Natl Acad Sci U S A 2020; 117:6042-6046. [PMID: 32111690 DOI: 10.1073/pnas.1918950117] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Induction of longstanding immunologic tolerance is essential for survival of transplanted organs and tissues. Despite recent advances in immunosuppression protocols, allograft damage inflicted by antibody specific for donor organs continues to represent a major obstacle to graft survival. Here we report that activation of regulatory CD8 T cells (CD8 Treg) that recognize the Qa-1 class Ib major histocompatibility complex (MHC), a mouse homolog of human leukocyte antigen-E (HLA-E), inhibits antibody-mediated immune rejection of heart allografts. We analyzed this response using a mouse model that harbors a point mutation in the class Ib MHC molecule Qa-1, which disrupts Qa-1 binding to the T cell receptor (TCR)-CD8 complex and impairs the CD8 Treg response. Despite administration of cytotoxic T lymphocyte antigen 4 (CTLA-4) immunoglobulin (Ig), Qa-1 mutant mice developed robust donor-specific antibody responses and accelerated heart graft rejection. We show that these allo-antibody responses reflect diminished Qa-1-restricted CD8 Treg-mediated suppression of host follicular helper T cell-dependent antibody production. These findings underscore the critical contribution of this Qa-1/HLA-E-dependent regulatory pathway to maintenance of transplanted organs and suggest therapeutic approaches to ameliorate allograft rejection.
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42
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Mimpen M, Smolders J, Hupperts R, Damoiseaux J. Natural killer cells in multiple sclerosis: A review. Immunol Lett 2020; 222:1-11. [PMID: 32113900 DOI: 10.1016/j.imlet.2020.02.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/17/2020] [Accepted: 02/26/2020] [Indexed: 12/13/2022]
Abstract
As the most common non-traumatic disabling disease among adolescents, multiple sclerosis (MS) is a devastating neurological inflammatory disease of the central nervous system. Research has not yet fully elucidated its pathogenesis, but it has shown MS to be a complex, multifactorial disease with many interplaying factors. One of these factors, natural killer (NK) cells, lymphocytes of the innate immune system, have recently gained attention due to the effects of daclizumab therapy, causing an expansion of the immunoregulatory subset of NK cells. Since then, NK cells and their relation to MS have been the focus of research, with many new findings being published in the last decade. In this review, NK cells are pictured as potent cytotoxic killers, as well as unique immune-regulators. Additionally, an overview of our current knowledge regarding NK cells in MS is given. The role of NK cells in MS is reviewed in the context of well-established environmental factors and current disease modifying therapies to gain further understanding of the pathogenesis and treatment options in MS.
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Affiliation(s)
- Max Mimpen
- School for Mental Health and Neuroscience, University of Maastricht, Maastricht The Netherlands
| | - Joost Smolders
- Department of Neurology, Erasmus University Medical Center, Rotterdam The Netherlands; Department of Neuroimmunology, Netherlands Institute for Neuroscience, Amsterdam The Netherlands
| | - Raymond Hupperts
- School for Mental Health and Neuroscience, University of Maastricht, Maastricht The Netherlands; Department of Neurology, Zuyderland Medical Center, Sittard The Netherlands
| | - Jan Damoiseaux
- Central Diagnostic Laboratory, Maastricht University Medical Center, Maastricht The Netherlands.
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Raynor J, Lin A, Hummel SA, Lampe K, Jordan M, Hoebe K, Hildeman DA. The Variable Genomic NK Cell Receptor Locus Is a Key Determinant of CD4+ T Cell Responses During Viral Infection. Front Immunol 2020; 11:197. [PMID: 32153566 PMCID: PMC7044186 DOI: 10.3389/fimmu.2020.00197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 01/27/2020] [Indexed: 12/14/2022] Open
Abstract
Increasing evidence points to a key role for NK cells in controlling adaptive immune responses. In studies examining the role of CD1d on CD4+ T cell responses, we found that a line of CD1d-deficient mice on the C57BL/6J background had a homozygous 129 locus on chromosome 6 containing the entire NK cell gene cluster. Mice possessing this locus (C57BL/6.NKC129) displayed a >10-fold reduction in antigen-specific CD4+ T cell responses after intracranial infection with lymphocytic choriomeningitis virus (LCMV). Neither parental strain displayed defects in viral-specific CD4+ T cell responses. Interestingly, following infection, increased numbers of NK cells accumulated in the lymph nodes of C57BL/6.NKC129 mice and displayed enhanced in vivo functionality. Moreover, depletion of NK cells with anti-asialo-GM-1 antibody in C57BL/6.NKC129 mice resulted in a >20-fold increase in viral-specific CD4+ T cell responses. Mechanistically, we found that dendritic cell antigen presentation and early type I IFN production were significantly decreased in C57BL/6.NKC129 mice, but were restored in perforin-deficient C57BL/6.NKC129 mice or following NK depletion. Together, these data reveal that the variable genomic regions containing the activating/inhibitory NK cell receptors are key determinants of antigen-specific CD4+ T cell responses, controlling type I IFN production and the antigen-presenting capacity of dendritic cells.
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Affiliation(s)
- Jana Raynor
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Adora Lin
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States.,Immunology Graduate Program, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Sarah A Hummel
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Kristin Lampe
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Michael Jordan
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - Kasper Hoebe
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States
| | - David A Hildeman
- Division of Immunobiology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States
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44
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Lang PA, Crome SQ, Xu HC, Lang KS, Chapatte L, Deenick EK, Grusdat M, Pandyra AA, Pozdeev VI, Wang R, Holderried TAW, Cantor H, Diefenbach A, Elford AR, McIlwain DR, Recher M, Häussinger D, Mak TW, Ohashi PS. NK Cells Regulate CD8 + T Cell Mediated Autoimmunity. Front Cell Infect Microbiol 2020; 10:36. [PMID: 32117809 PMCID: PMC7031256 DOI: 10.3389/fcimb.2020.00036] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 01/20/2020] [Indexed: 01/17/2023] Open
Abstract
Elucidating key factors that regulate immune-mediated pathology in vivo is critical for developing improved strategies to treat autoimmune disease and cancer. NK cells can exhibit regulatory functions against CD8+ T cells following viral infection. Here we show that while low doses of lymphocytic choriomeningitis virus (LCMV-WE) can readily induce strong CD8+ T cell responses and diabetes in mice expressing the LCMV glycoprotein on β-islet cells (RIP-GP mice), hyperglycemia does not occur after infection with higher doses of LCMV. High-dose LCMV infection induced an impaired CD8+ T cell response, which coincided with increased NK cell activity during early time points following infection. Notably, we observed increased NKp46 expression on NK cells during infection with higher doses, which resulted in an NK cell dependent suppression of T cells. Accordingly, depletion with antibodies specific for NK1.1 as well as NKp46 deficiency (Ncr1gfp/gfp mice) could restore CD8+ T cell immunity and permitted the induction of diabetes even following infection of RIP-GP mice with high-dose LCMV. Therefore, we identify conditions where innate lymphoid cells can play a regulatory role and interfere with CD8+ T cell mediated tissue specific pathology using an NKp46 dependent mechanism.
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Affiliation(s)
- Philipp A Lang
- Princess Margaret Cancer Centre, Campell Family Institute for Breast Cancer Research, University Health Network (UHN), Toronto, ON, Canada.,Department of Gastroenterology, Hepatology and Infectious Diseases, University of Düsseldorf, Düsseldorf, Germany.,Department of Molecular Medicine II, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Sarah Q Crome
- Department of Immunology, University of Toronto, Toronto, ON, Canada.,Toronto General Hospital Research Institute and UHN Transplant, University Health Network, Toronto, ON, Canada
| | - Haifeng C Xu
- Princess Margaret Cancer Centre, Campell Family Institute for Breast Cancer Research, University Health Network (UHN), Toronto, ON, Canada.,Department of Molecular Medicine II, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Karl S Lang
- Princess Margaret Cancer Centre, Campell Family Institute for Breast Cancer Research, University Health Network (UHN), Toronto, ON, Canada.,Institute of Immunology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Laurence Chapatte
- Princess Margaret Cancer Centre, Campell Family Institute for Breast Cancer Research, University Health Network (UHN), Toronto, ON, Canada
| | - Elissa K Deenick
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia.,Faculty of Medicine, UNSW Sydney, Sydney, NSW, Australia
| | - Melanie Grusdat
- Department of Gastroenterology, Hepatology and Infectious Diseases, University of Düsseldorf, Düsseldorf, Germany
| | - Aleksandra A Pandyra
- Department of Gastroenterology, Hepatology and Infectious Diseases, University of Düsseldorf, Düsseldorf, Germany
| | - Vitaly I Pozdeev
- Department of Gastroenterology, Hepatology and Infectious Diseases, University of Düsseldorf, Düsseldorf, Germany
| | - Ruifeng Wang
- Department of Molecular Medicine II, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Tobias A W Holderried
- Department of Gastroenterology, Hepatology and Infectious Diseases, University of Düsseldorf, Düsseldorf, Germany.,Department of Hematology, Oncology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Harvey Cantor
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Immunology, Harvard Medical School, Boston, MA, United States
| | - Andreas Diefenbach
- Laboratory of Innate Immunity, Department of Microbiology, Infectious Diseases and Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany.,Mucosal and Developmental Immunology, Deutsches Rheuma-Forschungszentrum, Berlin, Germany
| | - Alisha R Elford
- Princess Margaret Cancer Centre, Campell Family Institute for Breast Cancer Research, University Health Network (UHN), Toronto, ON, Canada
| | - David R McIlwain
- Department of Gastroenterology, Hepatology and Infectious Diseases, University of Düsseldorf, Düsseldorf, Germany
| | - Mike Recher
- Medical Outpatient Clinic and Immunodeficiency Lab, University Hospital Basel, Basel, Switzerland
| | - Dieter Häussinger
- Department of Gastroenterology, Hepatology and Infectious Diseases, University of Düsseldorf, Düsseldorf, Germany
| | - Tak W Mak
- Princess Margaret Cancer Centre, Campell Family Institute for Breast Cancer Research, University Health Network (UHN), Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Pamela S Ohashi
- Princess Margaret Cancer Centre, Campell Family Institute for Breast Cancer Research, University Health Network (UHN), Toronto, ON, Canada.,Department of Immunology, University of Toronto, Toronto, ON, Canada
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45
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Cardoso Alves L, Berger MD, Koutsandreas T, Kirschke N, Lauer C, Spörri R, Chatziioannou A, Corazza N, Krebs P. Non-apoptotic TRAIL function modulates NK cell activity during viral infection. EMBO Rep 2020; 21:e48789. [PMID: 31742873 PMCID: PMC6945065 DOI: 10.15252/embr.201948789] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/16/2019] [Accepted: 10/18/2019] [Indexed: 11/29/2022] Open
Abstract
The role of death receptor signaling for pathogen control and infection-associated pathogenesis is multifaceted and controversial. Here, we show that during viral infection, tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) modulates NK cell activity independently of its pro-apoptotic function. In mice infected with lymphocytic choriomeningitis virus (LCMV), Trail deficiency led to improved specific CD8+ T-cell responses, resulting in faster pathogen clearance and reduced liver pathology. Depletion experiments indicated that this effect was mediated by NK cells. Mechanistically, TRAIL expressed by immune cells positively and dose-dependently modulates IL-15 signaling-induced granzyme B production in NK cells, leading to enhanced NK cell-mediated T cell killing. TRAIL also regulates the signaling downstream of IL-15 receptor in human NK cells. In addition, TRAIL restricts NK1.1-triggered IFNγ production by NK cells. Our study reveals a hitherto unappreciated immunoregulatory role of TRAIL signaling on NK cells for the granzyme B-dependent elimination of antiviral T cells.
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Affiliation(s)
- Ludmila Cardoso Alves
- Institute of PathologyUniversity of BernBernSwitzerland
- Graduate School for Cellular and Biomedical SciencesUniversity of BernBernSwitzerland
| | | | - Thodoris Koutsandreas
- Institute of Biology, Medicinal Chemistry & BiotechnologyNHRFAthensGreece
- e‐NIOS PCKallithea‐AthensGreece
| | - Nick Kirschke
- Institute of PathologyUniversity of BernBernSwitzerland
| | | | - Roman Spörri
- Institute of MicrobiologyETH ZurichZurichSwitzerland
| | - Aristotelis Chatziioannou
- Institute of Biology, Medicinal Chemistry & BiotechnologyNHRFAthensGreece
- e‐NIOS PCKallithea‐AthensGreece
| | - Nadia Corazza
- Institute of PathologyUniversity of BernBernSwitzerland
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46
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Gyurova IE, Ali A, Waggoner SN. Natural Killer Cell Regulation of B Cell Responses in the Context of Viral Infection. Viral Immunol 2019; 33:334-341. [PMID: 31800366 DOI: 10.1089/vim.2019.0129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Secretion of both neutralizing and nonneutralizing virus-specific antibodies by B cells is a key component of immune control of many virus infections and a critical benchmark of successful preventative vaccines. Natural killer (NK) cells also play a vital role in antiviral immune defense via cytolytic elimination of infected cells and production of proinflammatory antiviral cytokines. Accumulating evidence points to multifaceted crosstalk between NK cells and antiviral B cell responses that can determine virus elimination, pathogenesis of infection, and efficacy of vaccine-elicited protection. These outcomes are a result of both positive and negative influences of NK cells on the B cell responses, as well as canonical antiviral killing of infected B cells. On one hand, NK cell-derived cytokines such as interferon-gamma (IFN-γ) may promote B cell activation and enhance immunoglobulin production. In contrast, NK cell immunoregulatory killing of CD4 T cells can limit affinity maturation in germinal centers resulting in weak infection or vaccine induction of antiviral neutralizing antibodies. In this review, we will discuss these and other dueling contributions of NK cells to B cell responses during virus infection or vaccination.
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Affiliation(s)
- Ivayla E Gyurova
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Pathobiology and Molecular Medicine Graduate Program, University of Cincinnati, Cincinnati, Ohio, USA
| | - Ayad Ali
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Medical Scientist Training Program, University of Cincinnati, Cincinnati, Ohio, USA.,Graduate Program in Immunology, University of Cincinnati, Cincinnati, Ohio, USA
| | - Stephen N Waggoner
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Pathobiology and Molecular Medicine Graduate Program, University of Cincinnati, Cincinnati, Ohio, USA.,Medical Scientist Training Program, University of Cincinnati, Cincinnati, Ohio, USA.,Graduate Program in Immunology, University of Cincinnati, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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47
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Tahrali I, Kucuksezer UC, Akdeniz N, Altintas A, Uygunoglu U, Aktas-Cetin E, Deniz G. CD3 -CD56 + NK cells display an inflammatory profile in RR-MS patients. Immunol Lett 2019; 216:63-69. [PMID: 31589897 DOI: 10.1016/j.imlet.2019.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 09/22/2019] [Accepted: 10/03/2019] [Indexed: 01/06/2023]
Abstract
Multiple Sclerosis (MS) is an immune-mediated and neurodegenerative disease of central nervous system. Relapsing-remitting (RR)-MS occurring with acute attacks and remissions, is the most common clinical type of MS. There are different strategies applied in first-line treatment of RR-MS patients such as interferon-beta (IFN-β) and glatiramer acetate. In this study, activating and inhibitory receptor expressions and interleukin (IL)-22 levels of NK cells were investigated in RR-MS patients with or without IFN-β therapy. Activating receptor expression and IL-22 levels of NK cells were increased in RR-MS patients under IFN-β therapy. Elevated NK cells with activating profile and increased IL-22 under IFN-β therapy suggest that IFN-β treatment might direct NK cells toward a pro-inflammatory status.
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Affiliation(s)
- Ilhan Tahrali
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Immunology, Istanbul, Turkey
| | - Umut Can Kucuksezer
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Immunology, Istanbul, Turkey
| | - Nilgun Akdeniz
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Immunology, Istanbul, Turkey
| | - Ayse Altintas
- Koc University, Faculty of Medicine, Department of Neurology, Istanbul, Turkey; Istanbul University Cerrahpasa, Cerrahpasa Faculty of Medicine, Department of Neurology, Istanbul, Turkey
| | - Ugur Uygunoglu
- Istanbul University Cerrahpasa, Cerrahpasa Faculty of Medicine, Department of Neurology, Istanbul, Turkey
| | - Esin Aktas-Cetin
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Immunology, Istanbul, Turkey
| | - Gunnur Deniz
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Department of Immunology, Istanbul, Turkey.
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48
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Segerberg F, Lundtoft C, Reid S, Hjorton K, Leonard D, Nordmark G, Carlsten M, Hagberg N. Autoantibodies to Killer Cell Immunoglobulin-Like Receptors in Patients With Systemic Lupus Erythematosus Induce Natural Killer Cell Hyporesponsiveness. Front Immunol 2019; 10:2164. [PMID: 31572377 PMCID: PMC6749077 DOI: 10.3389/fimmu.2019.02164] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 08/28/2019] [Indexed: 01/02/2023] Open
Abstract
Natural killer (NK) cell cytotoxicity toward self-cells is restrained by the inhibitory HLA class I-binding receptors CD94/NKG2A and the killer cell immunoglobulin-like receptors (KIRs). CD94/NKG2A and KIRs are also essential for NK cell education, which is a dynamic functional maturation process where a constitutive binding of inhibitory receptors to cognate HLA class I molecules is required for NK cells to maintain their full cytotoxic capacity. Previously, we described autoantibodies to CD94/NKG2A in patients with systemic lupus erythematosus (SLE). In this study we analyzed sera from 191 patients with SLE, 119 patients with primary Sjögren's syndrome (pSS), 48 patients with systemic sclerosis (SSc), and 100 healthy donors (HD) for autoantibodies to eight different KIRs. Anti-KIR autoantibodies were identified in sera from 23.0% of patients with SLE, 10.9% of patients with pSS, 12.5% of patients with SSc, and 3.0% of HD. IgG from anti-KIR-positive SLE patients reduced the degranulation and cytotoxicity of NK cells toward K562 tumor cells. The presence of anti-KIR-autoantibodies reacting with >3 KIRs was associated with an increased disease activity (p < 0.0001), elevated serum levels of IFN-α (p < 0.0001), nephritis (p = 0.001), and the presence of anti-Sm (p = 0.007), and anti-RNP (p = 0.003) autoantibodies in serum. Together these findings suggest that anti-KIR autoantibodies may contribute to the reduced function of NK cells in SLE patients, and that a defective NK cell function may be a risk factor for the development of lupus nephritis.
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Affiliation(s)
- Filip Segerberg
- Department of Medicine, Center for Haematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Christian Lundtoft
- Rheumatology and Science for Life Laboratories, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Sarah Reid
- Rheumatology and Science for Life Laboratories, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Karin Hjorton
- Rheumatology and Science for Life Laboratories, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Dag Leonard
- Rheumatology and Science for Life Laboratories, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Gunnel Nordmark
- Rheumatology and Science for Life Laboratories, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Mattias Carlsten
- Department of Medicine, Center for Haematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Niklas Hagberg
- Rheumatology and Science for Life Laboratories, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
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49
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Onyilagha C, Kuriakose S, Ikeogu N, Kung SKP, Uzonna JE. NK Cells Are Critical for Optimal Immunity to Experimental Trypanosoma congolense Infection. THE JOURNAL OF IMMUNOLOGY 2019; 203:964-971. [PMID: 31243088 DOI: 10.4049/jimmunol.1900103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 06/10/2019] [Indexed: 02/07/2023]
Abstract
NK cells are key innate immune cells that play critical roles in host defense. Although NK cells have been shown to regulate immunity to some infectious diseases, their role in immunity to Trypanosoma congolense has not been investigated. NK cells are vital sources of IFN-γ and TNF-α; two key cytokines that are known to play important roles in resistance to African trypanosomes. In this article, we show that infection with T. congolense leads to increased levels of activated and functional NK cells in multiple tissue compartments. Systemic depletion of NK cells with anti-NK1.1 mAb led to increased parasitemia, which was accompanied by significant reduction in IFN-γ production by immune cells in the spleens and liver of infected mice. Strikingly, infected NFIL3-/- mice (which genetically lack NK cell development and function) on the normally resistant background were highly susceptible to T. congolense infection. These mice developed fulminating and uncontrolled parasitemia and died significantly earlier (13 ± 1 d) than their wild-type control mice (106 ± 26 d). The enhanced susceptibility of NFIL3-/- mice to infection was accompanied by significantly impaired cytokine (IFN-γ and TNF-α) response by CD3+ T cells in the spleens and liver. Adoptive transfer of NK cells into NFIL3-/- mice before infection rescued them from acute death in a perforin-dependent manner. Collectively, these studies show that NK cells are critical for optimal resistance to T. congolense, and its deficiency leads to enhanced susceptibility in infected mice.
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Affiliation(s)
- Chukwunonso Onyilagha
- Department of Immunology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and
| | - Shiby Kuriakose
- Department of Immunology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and
| | - Nnamdi Ikeogu
- Department of Immunology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and
| | - Sam K P Kung
- Department of Immunology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and
| | - Jude E Uzonna
- Department of Immunology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba R3E 0T5, Canada; and .,Department of Medical Microbiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba R3E 0J9, Canada
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50
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Pallmer K, Barnstorf I, Baumann NS, Borsa M, Jonjic S, Oxenius A. NK cells negatively regulate CD8 T cells via natural cytotoxicity receptor (NCR) 1 during LCMV infection. PLoS Pathog 2019; 15:e1007725. [PMID: 30995287 PMCID: PMC6469806 DOI: 10.1371/journal.ppat.1007725] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 03/21/2019] [Indexed: 11/23/2022] Open
Abstract
Besides their function in recognizing cancerous and virally infected cells, natural killer (NK) cells have the potential to shape adaptive immune responses. However, the mechanisms employed by NK cells to negatively regulate virus-specific CD8 T cell responses remain to be fully defined. Using activating receptor natural cytotoxicity receptor (NCR) 1 deficient (NCR1gfp/gfp) mice, we found increased numbers of virus-specific CD8 T cells, leading to enhanced virus control during acute LCMV infection. Furthermore, virus-specific CD8 T cells were more activated in the absence of NCR1, resulting in exacerbated immunopathology, documented by weight loss, and superior virus control early during chronic LCMV infection. Transfer experiments of virus-specific CD8 T cells into NCR1 deficient hosts revealed a direct cross talk between NK and CD8 T cells. Studies on the splenic microarchitecture revealed pronounced disorganization of T cells in infected NCR1gfp/gfp mice, resulting in enhanced immunopathology and disruption of the T cell niche upon chronic LCMV infection. Our data show a novel pathway employed by NK cells to regulate antiviral CD8 T cell responses, namely direct recognition and elimination of activated CD8 T cells via NCR1 early during infection to protect the host from an overshooting T cell response. LCMV, which is part of the Arenaviridae family, is a well-established mouse model for acute and chronic virus infections, and it has allowed the identification of many immunological principles that were subsequently confirmed in human infections, such as CTL escape or CD8 T cell exhaustion. NK cells belong to the first line defense, being activated early following infection or exposure to malignant cells, and mediate their antiviral or anti-tumoral effect by direct cytotoxicity and inflammatory cytokine secretion. While NK cells are dispensable for control of LCMV, NK cells have the potential to shape adaptive immunity by regulating T cell responses. The absence of NK cells leads to increased T cell immunity and thereby, to faster eradication of the virus. However, the detailed mechanisms of how NK cells control antiviral T cell responses is still poorly defined. Here, we identified the activating NK cell receptor NCR1 to be involved in the regulation of CD8 T cell responses during acute and chronic LCMV infection. The absence of NCR1 led to a more robust CD4 and CD8 T cell response and to superior viral control in acute and chronic LCMV infections. However, the increased CD8 T cell responses led to severe immunopathology in the setting of chronic infection. Hence, NK cells curtail CD8 T cell responses to protect the host from immunopathological damage in an NCR1 dependent manner.
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Affiliation(s)
| | | | | | - Mariana Borsa
- Institute of Microbiology, ETH Zürich, Zürich, Switzerland
| | - Stipan Jonjic
- Department of Histology and Embryology, Faculty of Medicine, Rijeka, Croatia
| | - Annette Oxenius
- Institute of Microbiology, ETH Zürich, Zürich, Switzerland
- * E-mail:
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