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Liu L, Yang Y, Wu T, Du J, Long F. NKG2D knockdown improves hypoxic-ischemic brain damage by inhibiting neuroinflammation in neonatal mice. Sci Rep 2024; 14:2326. [PMID: 38282118 PMCID: PMC10822867 DOI: 10.1038/s41598-024-52780-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/23/2024] [Indexed: 01/30/2024] Open
Abstract
Hypoxic-ischemic brain damage (HIBD) is a leading cause of neonatal death and neurological dysfunction. Neuroinflammation is identified as one of the crucial pathological mechanisms after HIBD, and natural killer group 2 member D (NKG2D) is reported to be implicated in the pathogenesis of immunoinflammatory diseases. However, the role of NKG2D in neonatal HIBD is seldomly investigated. In this study, a neonatal mice model of HIBD was induced, and the role of the NKG2D in neuroinflammation and brain injury was explored by intracerebroventricular injection of lentivirus to knockdown NKG2D in neonatal mice with HIBD. The results showed that a significant increase in NKG2D protein level in the brain of neonatal mice with HIBD. The NKG2D knockdown in the brain significantly alleviated cerebral infarction, neurobehavioral deficits, and neuronal loss in neuronal HIBD. Moreover, the neuroprotective effect of NKG2D knockdown was associated with inhibition of the activation of microglia and astrocytes, expression of NKG2D ligands (NKG2DLs) and DAP10, and the nuclear translocation of NF-κB p65. Our findings reveal NKG2D knockdown may exert anti-inflammatory and neuroprotective effects in the neonatal mice with HIBD through downregulation of NKG2D/NKG2DLs/DAP10/NF-κB pathway. These results suggest that NKG2D may be a potential target for the treatment of neonatal HIBD.
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Affiliation(s)
- Lin Liu
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China
| | - Yuxin Yang
- Department of Epidemiology and Health Statistics, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ting Wu
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China
| | - Junrong Du
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China.
| | - Fangyi Long
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, China.
- Laboratory Medicine Center, Sichuan Provincial Maternity and Child Health Care Hospital, Affiliated Women's and Children's Hospital of Chengdu Medical College, Chengdu Medical College, Chengdu, Sichuan, China.
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2
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Wang J, Nakafuku KM, Ziff J, Gelin CF, Gholami H, Thompson AA, Karpowich NK, Limon L, Coate HR, Damm-Ganamet KL, Shih AY, Grant JC, Côte M, Mak PA, Pascual HA, Rives ML, Edwards JP, Venable JD, Venkatesan H, Shi Z, Allen SJ, Sharma S, Kung PP, Shireman BT. Development of small molecule inhibitors of natural killer group 2D receptor (NKG2D). Bioorg Med Chem Lett 2023; 96:129492. [PMID: 37778428 DOI: 10.1016/j.bmcl.2023.129492] [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: 07/24/2023] [Revised: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 10/03/2023]
Abstract
Natural killer group 2D (NKG2D) is a homodimeric activating immunoreceptor whose function is to detect and eliminate compromised cells upon binding to the NKG2D ligands (NKG2DL) major histocompatibility complex (MHC) molecules class I-related chain A (MICA) and B (MICB) and UL16 binding proteins (ULBP1-6). While typically present at low levels in healthy cells and tissue, NKG2DL expression can be induced by viral infection, cellular stress or transformation. Aberrant activity along the NKG2D/NKG2DL axis has been associated with autoimmune diseases due to the increased expression of NKG2D ligands in human disease tissue, making NKG2D inhibitors an attractive target for immunomodulation. Herein we describe the discovery and optimization of small molecule PPI (protein-protein interaction) inhibitors of NKG2D/NKG2DL. Rapid SAR was guided by structure-based drug design and accomplished by iterative singleton and parallel medicinal chemistry synthesis. These efforts resulted in the identification of several potent analogs (14, 21, 30, 45) with functional activity and improved LLE.
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Affiliation(s)
- Jocelyn Wang
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States.
| | - Kohki M Nakafuku
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States.
| | - Jeannie Ziff
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Christine F Gelin
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Hadi Gholami
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Aaron A Thompson
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Nathan K Karpowich
- Janssen Research & Development L.L.C., 1400 McKean Rd., Spring House, PA 19477, United States
| | - Luis Limon
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Heather R Coate
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Kelly L Damm-Ganamet
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Amy Y Shih
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Joanna C Grant
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Marjorie Côte
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Puiying A Mak
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Heather A Pascual
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Marie-Laure Rives
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - James P Edwards
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Jennifer D Venable
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Hariharan Venkatesan
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Zhicai Shi
- Janssen Research & Development L.L.C., 1400 McKean Rd., Spring House, PA 19477, United States
| | - Samantha J Allen
- Janssen Research & Development L.L.C., 1400 McKean Rd., Spring House, PA 19477, United States
| | - Sujata Sharma
- Janssen Research & Development L.L.C., 1400 McKean Rd., Spring House, PA 19477, United States
| | - Pei-Pei Kung
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
| | - Brock T Shireman
- Janssen Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA, 92121, United States
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3
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Zhou J, Wang J, Tao L, Liu M, Tang X, Zhu X. NKG2D receptor regulates CD4 +T cell differentiation via interaction with dendritic cells in patients with juvenile idiopathic arthritis. Clin Immunol 2023; 256:109780. [PMID: 37741520 DOI: 10.1016/j.clim.2023.109780] [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: 10/13/2022] [Revised: 05/12/2023] [Accepted: 09/18/2023] [Indexed: 09/25/2023]
Abstract
NKG2D provides a costimulatory signal for activation of CD4+ T cells. We explored its role in interactions of CD4+ T cells and dendritic cells (DCs) in juvenile idiopathic arthritis (JIA) patients by using NKG2D genetically modified CD4+ T cells. We found active JIA patients had significantly higher content of CD4 + NKG2D+ T cells than healthy controls. Expression of NKG2D on CD4+ T cells, and MICA and MICB on DCs were significantly greater in articular JIA than systemic JIA. NKG2D induced IL- 12 and suppressed IL-10 and TGF-β from CD4+ T cells, increased IFN-γ + CD4+ T and IL-17+ CD4+ T cells, RORc and T-bet, but reduced CD25+ Foxp3+ CD4+ T cells, IL-4+ CD4+ T cells, Foxp3, and GATA3 in JIA patients. NKG2D decreased IL-10 and increased CD83, MICA, and MICB of DCs in JIA and controls. So NKG2D regulates differentiation of CD4+ T cells directly and the maturation of DCs indirectly.
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Affiliation(s)
- Juan Zhou
- Department of Pediatric Allergy, Immunology & Rheumatology, Guangzhou Women and Children's Medical Center, Guangdong, Provincial Clinical Research Center for Child Health, Guangzhou, China
| | - Junyan Wang
- Department of Immunology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Linlin Tao
- Department of Pediatrics, the affiliated Hospital of Guizhou Medical University, Medical Center for Children of Guizhou Province, Guiyang, China
| | - Mingyue Liu
- Department of Immunology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Xuemei Tang
- Department of Immunology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Xiaoping Zhu
- Department of Pediatrics, the affiliated Hospital of Guizhou Medical University, Medical Center for Children of Guizhou Province, Guiyang, China.
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4
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Wu J, Yang F, Ma X, Lin J, Chen W. Elderly-onset rheumatoid arthritis vs. polymyalgia rheumatica: Differences in pathogenesis. Front Med (Lausanne) 2023; 9:1083879. [PMID: 36714116 PMCID: PMC9879490 DOI: 10.3389/fmed.2022.1083879] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 12/28/2022] [Indexed: 01/13/2023] Open
Abstract
Rheumatoid arthritis is a chronic autoimmune disease that mainly affects the facet joints. Elderly-onset rheumatoid arthritis appears to exhibit symptoms similar to those of polymyalgia rheumatica, characterized by morning stiffness and pain in the shoulder and hip joints. Both diseases develop in the elderly, and it is sometimes challenging to distinguish them. Here, we identify the differences in pathogenesis between elderly-onset rheumatoid arthritis and polymyalgia rheumatica to assist with a clear differential diagnosis and effective early intervention.
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5
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Wu F, An Y, Zhou L, Zhao Y, Chen L, Wang J, Wu G. Whole-transcriptome sequencing and ceRNA interaction network of temporomandibular joint osteoarthritis. Front Genet 2022; 13:962574. [PMID: 36276964 PMCID: PMC9581126 DOI: 10.3389/fgene.2022.962574] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/20/2022] [Indexed: 11/20/2023] Open
Abstract
Purpose: The aim of this study was to conduct a comprehensive transcriptomic analysis to explore the potential biological functions of noncoding RNA (ncRNAs) in temporomandibular joint osteoarthritis (TMJOA). Methods: Whole transcriptome sequencing was performed to identify differentially expressed genes (DEGs) profiles between the TMJOA and normal groups. The functions and pathways of the DEGs were analyzed using Metascape, and a competitive endogenous RNA (ceRNA) network was constructed using Cytoscape software. Results: A total of 137 DEmRNAs, 65 DEmiRNAs, 132 DElncRNAs, and 29 DEcircRNAs were identified between the TMJOA and normal groups. Functional annotation of the DEmRNAs revealed that immune response and apoptosis are closely related to TMJOA and also suggested key signaling pathways related to TMJOA, including chronic depression and PPAR signaling pathways. We identified vital mRNAs, including Klrk1, Adipoq, Cryab, and Hspa1b. Notably, Adipoq expression in cartilage was significantly upregulated in TMJOA compared with normal groups (10-fold, p < 0.001). According to the functional analysis of DEmRNAs regulated by the ceRNA network, we found that ncRNAs are involved in the regulation of autophagy and apoptosis. In addition, significantly DEncRNAs (lncRNA-COX7A1, lncRNA-CHTOP, lncRNA-UFM1, ciRNA166 and circRNA1531) were verified, and among these, circRNA1531 (14.5-fold, p < 0.001) and lncRNA-CHTOP (14.8-fold, p < 0.001) were the most significantly downregulated ncRNAs. Conclusion: This study showed the potential of lncRNAs, circRNAs, miRNAs, and mRNAs may as clinical biomarkers and provides transcriptomic insights into their functional roles in TMJOA. This study identified the transcriptomic signatures of mRNAs associated with immunity and apoptosis and the signatures of ncRNAs associated with autophagy and apoptosis and provides insight into ncRNAs in TMJOA.
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Affiliation(s)
- Fan Wu
- School of Basic Medicine, Heilongjiang Key Lab of Oral Biomedicine Materials and Clinical Application, Experimental Center for Stomatology Engineering, Jiamusi University, Jiamusi, China
- Department of Implantology, School of Stomatology, National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology & Shaanxi Key Laboratory of Stomatology, Fourth Military Medical University, Xi’an, China
| | - Yanxin An
- Department of General Surgery, The First Affiliated Hospital of Xi’an Medical University, Xi’an, China
| | - Libo Zhou
- School of Basic Medicine, Heilongjiang Key Lab of Oral Biomedicine Materials and Clinical Application, Experimental Center for Stomatology Engineering, Jiamusi University, Jiamusi, China
| | - Yuqing Zhao
- School of Stomatology, Heilongjiang Key Lab of Oral Biomedicine Materials and Clinical Application, Experimental Center for Stomatology Engineering, Jiamusi University, Jiamusi, China
| | - Lei Chen
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, China
| | - Jing Wang
- Department of Implantology, School of Stomatology, National Clinical Research Center for Oral Diseases & State Key Laboratory of Military Stomatology & Shaanxi Key Laboratory of Stomatology, Fourth Military Medical University, Xi’an, China
| | - Gaoyi Wu
- School of Basic Medicine, Heilongjiang Key Lab of Oral Biomedicine Materials and Clinical Application, Experimental Center for Stomatology Engineering, Jiamusi University, Jiamusi, China
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6
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Wu L, Wang R, Zhou Y, Zhao D, Chen F, Wu X, Chen X, Chen S, Li J, Zhu J. Natural Killer Cells Infiltration in the Joints Exacerbates Collagen-Induced Arthritis. Front Immunol 2022; 13:860761. [PMID: 35432322 PMCID: PMC9005809 DOI: 10.3389/fimmu.2022.860761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/03/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction The role of natural killer (NK) cells in rheumatoid arthritis remains controversial. We aimed to assess the role of NK cells in the pathogenesis of rheumatoid arthritis. Materials and Methods The percentage of NK cells in the peripheral blood, spleen, lymph nodes and inflamed paws from collagen-induced arthritis mice were examined through the disease progression. Correlation between the proportion of NK cells and subsets with arthritis score, histopathological changes, and bone destruction were evaluated. Adoptive cell transfer was performed to determine the effect of NKp46+NK cells on arthritis development, and the role of receptor NKp46 was explored with NKp46 knockout mice. Results The percentage of NK cells in peripheral blood decreased at the late stage of the disease and negatively correlated with arthritis score. NK cells increased in the inflamed paws during arthritis development and were positively associated with arthritis score, histopathological change, and bone destruction. Adoptive transfer of NKp46+NK cells before disease onset resulted in increased NK cells infiltration in the joints, higher incidence of arthritis, more severe clinical symptoms, and more pronounced joint inflammation and bone damage. NKp46 deficiency had no significant influence on the incidence and severity of arthritis in collagen-induced arthritis mice. Conclusions NK cell infiltration in the joints positively correlates with arthritis progression, inflammation, and bone destruction. The pathogenic role of NK cells in rheumatoid arthritis may be independent of the receptor NKp46.
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Affiliation(s)
- Lisheng Wu
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Ran Wang
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Yi Zhou
- Department of Obstetrics, Guangdong Women and Children Hospital, Guangzhou, China
| | - Di Zhao
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Feilong Chen
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Xianghui Wu
- Laboratory Animal Research Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoguang Chen
- Department of Pathogen Biology, Key Laboratory of Tropical Disease Research of Guangdong Province, School of Public Health, Southern Medical University, Guangzhou, China
| | - Shixian Chen
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Juan Li
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Traditional Chinese Internal Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Junqing Zhu
- Department of Rheumatic & TCM Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
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7
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Abstract
Elucidating the basis of chronic disease courses and the development of appropriate treatment methods for inflammatory diseases still represent a big challenge for medical science, as the mechanisms driving aberrant immune reactions are mostly still unknown. Of particular interest is the identification of checkpoints that regulate the function and differentiation of proinflammatory cells during the pathogenesis, along with methods for modulation of specific checkpoints as a treatment approach. Innate receptors, such as members of the natural killer group 2 family (NKG2X), natural cytotoxicity receptors (NCR) or Toll-like receptors (TLRs), play an important role in modulating the immune response. NKG2 member D (NKG2D) is a potent activating receptor of the immune system, known as a sentinel for cellular danger signals presented by cells exposed to endoplasmic reticulum (ER) stress, cell death or an inflammatory cytokine milieu. NKG2A/C bind the non-classical HLA class I molecule, sense changes in ligand expression associated with malignant transformation and cellular stress and their main function is to send inhibitory or activating signals to NK cells and subsets of T cells. In this review, we present our latest knowledge on the understanding of the role of innate receptors in the context of chronic inflammation and autoimmunity with special emphasis on danger sensor receptors NKG2D and NKG2A/C.
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8
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Manolakou T, Verginis P, Boumpas DT. DNA Damage Response in the Adaptive Arm of the Immune System: Implications for Autoimmunity. Int J Mol Sci 2021; 22:5842. [PMID: 34072535 PMCID: PMC8198144 DOI: 10.3390/ijms22115842] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 12/25/2022] Open
Abstract
In complex environments, cells have developed molecular responses to confront threats against the genome and achieve the maintenance of genomic stability assuring the transfer of undamaged DNA to their progeny. DNA damage response (DDR) mechanisms may be activated upon genotoxic or environmental agents, such as cytotoxic drugs or ultraviolet (UV) light, and during physiological processes requiring DNA transactions, to restore DNA alterations that may cause cellular malfunction and affect viability. In addition to the DDR, multicellular organisms have evolved specialized immune cells to respond and defend against infections. Both adaptive and innate immune cells are subjected to DDR processes, either as a prerequisite to the immune response, or as a result of random endogenous and exogenous insults. Aberrant DDR activities have been extensively studied in the immune cells of the innate arm, but not in adaptive immune cells. Here, we discuss how the aberrant DDR may lead to autoimmunity, with emphasis on the adaptive immune cells and the potential of therapeutic targeting.
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Affiliation(s)
- Theodora Manolakou
- Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 115 27 Athens, Greece;
- School of Medicine, National and Kapodistrian University of Athens, 115 27 Athens, Greece
| | - Panayotis Verginis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, 700 13 Heraklion, Greece;
- Laboratory of Immune Regulation and Tolerance, Division of Basic Sciences, University of Crete Medical School, 700 13 Heraklion, Greece
| | - Dimitrios T. Boumpas
- Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 115 27 Athens, Greece;
- Joint Rheumatology Program, 4th Department of Internal Medicine, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, 124 62 Athens, Greece
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9
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Traditional Thai Massage Promoted Immunity in the Elderly via Attenuation of Senescent CD4+ T Cell Subsets: A Randomized Crossover Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18063210. [PMID: 33808849 PMCID: PMC8003732 DOI: 10.3390/ijerph18063210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 01/03/2023]
Abstract
The beneficial physiological effects of traditional Thai massage (TTM) have been previously documented. However, its effect on immune status, particularly in the elderly, has not been explored. This study aimed to investigate the effects of multiple rounds of TTM on senescent CD4+ T cell subsets in the elderly. The study recruited 12 volunteers (61-75 years), with senescent CD4+ T cell subsets, who received six weekly 1-h TTM sessions or rest, using a randomized controlled crossover study with a 30-day washout period. Flow cytometry analysis of surface markers and intracellular cytokine staining was performed. TTM could attenuate the senescent CD4+ T cell subsets, especially in CD4+28null NKG2D+ T cells (n = 12; p < 0.001). The participants were allocated into two groups (low < 2.75% or high ≥ 2.75%) depending on the number of CD4+28null NKG2D+ T cells. After receiving TTM over 6 sessions, the cell population of the high group had significantly decreased (p < 0.001), but the low group had no significant changes. In conclusion, multiple rounds of TTM may promote immunity through the attenuation of aberrant CD4+ T subsets. TTM may be provided as a complementary therapy to improve the immune system in elderly populations.
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10
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Babic M, Dimitropoulos C, Hammer Q, Stehle C, Heinrich F, Sarsenbayeva A, Eisele A, Durek P, Mashreghi MF, Lisnic B, Van Snick J, Löhning M, Fillatreau S, Withers DR, Gagliani N, Huber S, Flavell RA, Polic B, Romagnani C. NK cell receptor NKG2D enforces proinflammatory features and pathogenicity of Th1 and Th17 cells. J Exp Med 2021; 217:151818. [PMID: 32453422 PMCID: PMC7398170 DOI: 10.1084/jem.20190133] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/24/2020] [Accepted: 04/24/2020] [Indexed: 12/24/2022] Open
Abstract
NKG2D is a danger sensor expressed on different subsets of innate and adaptive lymphocytes. Despite its established role as a potent activator of the immune system, NKG2D-driven regulation of CD4+ T helper (Th) cell-mediated immunity remains unclear. In this study, we demonstrate that NKG2D modulates Th1 and proinflammatory T-bet+ Th17 cell effector functions in vitro and in vivo. In particular, NKG2D promotes higher production of proinflammatory cytokines by Th1 and T-bet+ Th17 cells and reinforces their transcription of type 1 signature genes, including Tbx21. Conditional deletion of NKG2D in T cells impairs the ability of antigen-specific CD4+ T cells to promote inflammation in vivo during antigen-induced arthritis and experimental autoimmune encephalomyelitis, indicating that NKG2D is an important target for the amelioration of Th1- and Th17-mediated chronic inflammatory diseases.
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Affiliation(s)
- Marina Babic
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany.,Division of Gastroenterology, Infectiology and Rheumatology, Medical Department I, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | | | - Quirin Hammer
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Christina Stehle
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Frederik Heinrich
- Therapeutic Gene Regulation, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Assel Sarsenbayeva
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Almut Eisele
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Pawel Durek
- Cell Biology, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Mir-Farzin Mashreghi
- Therapeutic Gene Regulation, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany
| | - Berislav Lisnic
- Center for Proteomics, University of Rijeka, Rijeka, Croatia.,Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Croatia
| | | | - Max Löhning
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany.,Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Simon Fillatreau
- Institut Necker-Enfants Malades, INSERM U1151/CNRS UMR8253, Faculté de Médecine Paris Descartes, Paris, France
| | - David R Withers
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Nicola Gagliani
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Samuel Huber
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Richard A Flavell
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT.,Howard Hughes Medical Institute, Yale University, New Haven, CT
| | - Bojan Polic
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Croatia
| | - Chiara Romagnani
- Innate Immunity, German Rheumatism Research Centre-a Leibniz Institute, Berlin, Germany.,Division of Gastroenterology, Infectiology and Rheumatology, Medical Department I, Charité-Universitätsmedizin Berlin, Berlin, Germany
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11
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Plaza-Rojas L, Guevara-Patiño JA. The Role of the NKG2D in Vitiligo. Front Immunol 2021; 12:624131. [PMID: 33717132 PMCID: PMC7952755 DOI: 10.3389/fimmu.2021.624131] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/02/2021] [Indexed: 12/16/2022] Open
Abstract
Vitiligo is an acquired multifactorial disease that affects melanocytes and results in skin depigmentation. In this review, we examine the role of cells stress and self-reactive T cells responses. Given the canonical and non-canonical functions of NKG2D, such as authenticating stressed target and enhance TCR signaling, we examine how melanocyte stress leads to the expression of ligands that are recognized by the activating receptor NKG2D, and how its signaling results in the turning of T cells against self (melanocyte suicide by proxy). We also discuss how this initiation phase is followed by T cell perpetuation, as NKG2D signaling results in self-sustained long-lasting T cells, with improved cytolytic properties.
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Affiliation(s)
- Lourdes Plaza-Rojas
- Department of Cancer Biology, Loyola University Chicago, Chicago, IL, United States
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12
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Covre LP, De Maeyer RPH, Gomes DCO, Akbar AN. The role of senescent T cells in immunopathology. Aging Cell 2020; 19:e13272. [PMID: 33166035 PMCID: PMC7744956 DOI: 10.1111/acel.13272] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/11/2020] [Accepted: 10/04/2020] [Indexed: 12/16/2022] Open
Abstract
The development of senescence in tissues of different organs and in the immune system are usually investigated independently of each other although during ageing, senescence in both cellular systems develop concurrently. Senescent T cells are highly inflammatory and secrete cytotoxic mediators and express natural killer cells receptors (NKR) that bypass their antigen specificity. Instead they recognize stress ligands that are induced by inflammation or infection of different cell types in tissues. In this article we discuss data on T cell senescence, how it is regulated and evidence for novel functional attributes of senescent T cells. We discuss an interactive loop between senescent T cells and senescent non-lymphoid cells and conclude that in situations of intense inflammation, senescent cells may damage healthy tissue. While the example for immunopathology induced by senescent cells that we highlight is cutaneous leishmaniasis, this situation of organ damage may apply to other infections, including COVID-19 and also rheumatoid arthritis, where ageing, inflammation and senescent cells are all part of the same equation.
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Affiliation(s)
- Luciana P. Covre
- Division of MedicineUniversity College LondonLondonUK
- Núcleo de Doenças InfecciosasUniversidade Federal do Espírito SantoVitoriaBrazil
| | | | - Daniel C. O. Gomes
- Núcleo de Doenças InfecciosasUniversidade Federal do Espírito SantoVitoriaBrazil
| | - Arne N. Akbar
- Division of MedicineUniversity College LondonLondonUK
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13
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Høgh RI, Møller SH, Jepsen SD, Mellergaard M, Lund A, Pejtersen M, Fitzner E, Andresen L, Skov S. Metabolism of short-chain fatty acid propionate induces surface expression of NKG2D ligands on cancer cells. FASEB J 2020; 34:15531-15546. [PMID: 32996653 DOI: 10.1096/fj.202000162r] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 08/30/2020] [Accepted: 09/15/2020] [Indexed: 12/13/2022]
Abstract
SCFAs are primarily produced in the colon by bacterial fermentation of nondigestible carbohydrates. Besides providing energy, SCFAs can suppress development of colon cancer. The mechanism, however, remains elusive. Here, we demonstrate that the SCFA propionate upregulates surface expression of the immune stimulatory NKG2D ligands, MICA/B by imposing metabolic changes in dividing cells. Propionate-mediated MICA/B expression did not rely on GPR41/GPR43 receptors but depended on functional mitochondria. By siRNA-directed knockdown, we could further link phosphoenolpyruvate carboxykinase (PEPCK), the rate-limiting enzyme in gluconeogenesis to propionate regulation of MICA/B expression. Moreover, knockdown of Rictor and specific mTOR inhibitors implicated mTORC2 activity with metabolic changes that control MICA/B expression. SCFAs are precursors to short-chain acyl-CoAs that are used for histone acylation thereby linking the metabolic state to chromatin structure and gene expression. Propionate increased the overall acetylation and propionylation and inhibition of lysine acetyltransferases (KATs) that are responsible for adding acyl-CoAs to histones reduced propionate-mediated MICA/B expression, suggesting that propionate-induced acylation increases MICA/B expression. Notably, propionate upregulated MICA/B surface expression on colon cancer cells in an acylation-dependent manner; however, the impact of mitochondrial metabolism on MICA/B expression was different in colon cancer cells compared with Jurkat cells, suggesting that continuous exposure to propionate in the colon may provide an enhanced capacity to metabolize propionate. Together, our findings support that propionate causes metabolic changes resulting in NKG2D ligand surface expression, which holds potential as an immune activating anticancer therapy.
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Affiliation(s)
- Rikke Illum Høgh
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sofie Hedlund Møller
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Stine Dam Jepsen
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Maiken Mellergaard
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Astrid Lund
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mikala Pejtersen
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Emil Fitzner
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars Andresen
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Søren Skov
- Laboratory of Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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14
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Bertolini M, McElwee K, Gilhar A, Bulfone‐Paus S, Paus R. Hair follicle immune privilege and its collapse in alopecia areata. Exp Dermatol 2020; 29:703-725. [DOI: 10.1111/exd.14155] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/18/2020] [Accepted: 07/10/2020] [Indexed: 12/11/2022]
Affiliation(s)
| | - Kevin McElwee
- Monasterium Laboratory Münster Germany
- Centre for Skin Sciences University of Bradford Bradford UK
- Department of Dermatology and Skin Science University of British Columbia Vancouver British Columbia Canada
| | - Amos Gilhar
- Laboratory for Skin Research Rappaport Faculty of Medicine Technion‐Israel Institute of Technology Haifa Israel
| | - Silvia Bulfone‐Paus
- Monasterium Laboratory Münster Germany
- Centre for Dermatology Research University of Manchester and NIHR Manchester Biomedical Research Centre Manchester UK
| | - Ralf Paus
- Monasterium Laboratory Münster Germany
- Centre for Dermatology Research University of Manchester and NIHR Manchester Biomedical Research Centre Manchester UK
- Dr. Philip Frost Department of Dermatology & Cutaneous Surgery University of Miami Miller School of Medicine Miami FL USA
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15
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Mellergaard M, Høgh RI, Lund A, Aldana BI, Guérillot R, Møller SH, Hayes AS, Panagiotopoulou N, Frimand Z, Jepsen SD, Hansen CHF, Andresen L, Larsen AR, Peleg AY, Stinear TP, Howden BP, Waagepetersen HS, Frees D, Skov S. Staphylococcus aureus induces cell-surface expression of immune stimulatory NKG2D ligands on human monocytes. J Biol Chem 2020; 295:11803-11821. [PMID: 32605922 PMCID: PMC7450114 DOI: 10.1074/jbc.ra120.012673] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 06/24/2020] [Indexed: 12/24/2022] Open
Abstract
Staphylococcus aureus is among the leading causes of bacterial infections worldwide. The pathogenicity and establishment of S. aureus infections are tightly linked to its ability to modulate host immunity. Persistent infections are often associated with mutant staphylococcal strains that have decreased susceptibility to antibiotics; however, little is known about how these mutations influence bacterial interaction with the host immune system. Here, we discovered that clinical S. aureus isolates activate human monocytes, leading to cell-surface expression of immune stimulatory natural killer group 2D (NKG2D) ligands on the monocytes. We found that expression of the NKG2D ligand ULBP2 (UL16-binding protein 2) is associated with bacterial degradability and phagolysosomal activity. Moreover, S. aureus-induced ULBP2 expression was linked to altered host cell metabolism, including increased cytoplasmic (iso)citrate levels, reduced glycolytic flux, and functional mitochondrial activity. Interestingly, we found that the ability of S. aureus to induce ULBP2 and proinflammatory cytokines in human monocytes depends on a functional ClpP protease in S. aureus These findings indicate that S. aureus activates ULBP2 in human monocytes through immunometabolic mechanisms and reveal that clpP inactivation may function as a potential immune evasion mechanism. Our results provide critical insight into the interplay between the host immune system and S. aureus that has evolved under the dual selective pressure of host immune responses and antibiotic treatment. Our discovery of an immune stimulatory pathway consisting of human monocyte-based defense against S. aureus suggests that targeting the NKG2D pathway holds potential for managing persistent staphylococcal infections.
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Affiliation(s)
- Maiken Mellergaard
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rikke Illum Høgh
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Astrid Lund
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Blanca Irene Aldana
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Romain Guérillot
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Sofie Hedlund Møller
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ashleigh S Hayes
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Nafsika Panagiotopoulou
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Zofija Frimand
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Stine Dam Jepsen
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Camilla Hartmann Friis Hansen
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars Andresen
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anders Rhod Larsen
- Statens Serum Institut, Microbiology and Infection Control, Copenhagen, Denmark
| | - Anton Y Peleg
- Department of Infectious Diseases, Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Microbiology, Monash University, Melbourne, Victoria, Australia
| | - Timothy P Stinear
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Benjamin P Howden
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Helle S Waagepetersen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Dorte Frees
- Food Safety and Zoonosis, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Søren Skov
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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16
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Høgh RI, Droujinine A, Møller SH, Jepsen SD, Mellergaard M, Andresen L, Skov S. Fumarate Upregulates Surface Expression of ULBP2/ULBP5 by Scavenging Glutathione Antioxidant Capacity. THE JOURNAL OF IMMUNOLOGY 2020; 204:1746-1759. [PMID: 32144161 DOI: 10.4049/jimmunol.1900740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 01/26/2020] [Indexed: 12/15/2022]
Abstract
Fumarate is a tricarboxylic acid cycle metabolite whose intracellular accumulation is linked to inflammatory signaling and development of cancer. In this study, we demonstrate that endogenous fumarate accumulation upregulates surface expression of the immune stimulatory NK group 2, member D (NKG2D) ligands ULBP2 and ULBP5. In agreement with this, accumulation of fumarate by the therapeutic drug dimethyl fumarate (DMF) also promotes ULBP2/5 surface expression. Mechanistically, we found that the increased ULBP2/5 expression was dependent on oxidative stress and the antioxidants N-acetylcysteine and glutathione (GSH) abrogated ULBP2/5 upregulated by DMF. Fumarate can complex with GSH and thereby exhaust cells of functional GSH capacity. In line with this, inhibition of GSH reductase (GR), the enzyme responsible for GSH recycling, promoted ULBP2/5 surface expression. Loss of the tricarboxylic acid cycle enzyme fumarate hydratase (FH) associates with a malignant form of renal cancer characterized by fumarate accumulation and increased production of reactive oxygen species, highlighting fumarate as an oncometabolite. Interestingly, FH-deficient renal cancer cells had low surface expression of ULBP2/5 and were unresponsive to DMF treatment, suggesting that the fumarate-stimulating ULBP2/5 pathway is abrogated in these cells as an immune-evasive strategy. Together, our data show that ULBP2/5 expression can be upregulated by accumulation of fumarate, likely by depleting cells of GSH antioxidant capacity. Given that DMF is an approved human therapeutic drug, our findings support a broader use of DMF in treatment of cancers and inflammatory conditions.
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Affiliation(s)
- Rikke Illum Høgh
- Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Alec Droujinine
- Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Sofie Hedlund Møller
- Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Stine Dam Jepsen
- Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Maiken Mellergaard
- Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Lars Andresen
- Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Søren Skov
- Immunology, Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
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17
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Vandenhaute J, Avau A, Filtjens J, Malengier-Devlies B, Imbrechts M, Van den Berghe N, Ahmadzadeh K, Mitera T, Boon L, Leclercq G, Wouters C, Matthys P. Regulatory Role for NK Cells in a Mouse Model of Systemic Juvenile Idiopathic Arthritis. THE JOURNAL OF IMMUNOLOGY 2019; 203:3339-3348. [PMID: 31676671 DOI: 10.4049/jimmunol.1900510] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 10/04/2019] [Indexed: 12/14/2022]
Abstract
Mice deficient in IFN-γ (IFN-γ knockout [KO] mice) develop a systemic inflammatory syndrome in response to CFA, in contrast to CFA-challenged wild-type (WT) mice who only develop a mild inflammation. Symptoms in CFA-challenged IFN-γ KO resemble systemic juvenile idiopathic arthritis (sJIA), a childhood immune disorder of unknown cause. Dysregulation of innate immune cells is considered to be important in the disease pathogenesis. In this study, we used this murine model to investigate the role of NK cells in the pathogenesis of sJIA. NK cells of CFA-challenged IFN-γ KO mice displayed an aberrant balance of activating and inhibitory NK cell receptors, lower expression of cytotoxic proteins, and a defective NK cell cytotoxicity. Depletion of NK cells (via anti-IL-2Rβ and anti-Asialo-GM1 Abs) or blockade of the NK cell activating receptor NKG2D in CFA-challenged WT mice resulted in increased severity of systemic inflammation and appearance of sJIA-like symptoms. NK cells of CFA-challenged IFN-γ KO mice and from anti-NKG2D-treated mice showed defective degranulation capacities toward autologous activated immune cells, predominantly monocytes. This is in line with the increased numbers of activated inflammatory monocytes in these mice which was particularly reflected in the expression of CCR2, a chemokine receptor, and in the expression of Rae-1, a ligand for NKG2D. In conclusion, NK cells are defective in a mouse model of sJIA and impede disease development in CFA-challenged WT mice. Our findings point toward a regulatory role for NK cells in CFA-induced systemic inflammation via a NKG2D-dependent control of activated immune cells.
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Affiliation(s)
- Jessica Vandenhaute
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Anneleen Avau
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Jessica Filtjens
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Bert Malengier-Devlies
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Maya Imbrechts
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Nathalie Van den Berghe
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Kourosh Ahmadzadeh
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Tania Mitera
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium
| | | | - Georges Leclercq
- Department of Clinical Chemistry, Microbiology and Immunology, Ghent University, 9000 Ghent, Belgium; and
| | - Carine Wouters
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium.,Division of Pediatric Rheumatology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Rega Institute for Medical Research, Department of Microbiology and Immunology, KU Leuven, 3000 Leuven, Belgium;
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18
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Abstract
The C-type lectins are a superfamily of proteins that recognize a broad repertoire of ligands and that regulate a diverse range of physiological functions. Most research attention has focused on the ability of C-type lectins to function in innate and adaptive antimicrobial immune responses, but these proteins are increasingly being recognized to have a major role in autoimmune diseases and to contribute to many other aspects of multicellular existence. Defects in these molecules lead to developmental and physiological abnormalities, as well as altered susceptibility to infectious and non-infectious diseases. In this Review, we present an overview of the roles of C-type lectins in immunity and homeostasis, with an emphasis on the most exciting recent discoveries.
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19
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Fechtenbaum M, Desoutter J, Delvallez G, Brochot E, Guillaume N, Goëb V. MICA and NKG2D variants as risk factors in spondyloarthritis: a case-control study. Genes Immun 2018; 20:599-605. [PMID: 30177859 PMCID: PMC6768283 DOI: 10.1038/s41435-018-0044-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/22/2018] [Accepted: 07/24/2018] [Indexed: 01/27/2023]
Abstract
The major histocompatibility complex class I polypeptide-related sequence A (MICA) glycoprotein mediates the activation of the natural killer group 2D receptor (NKG2D) expressed on NK and CD8+ T cells. A methionine or valine at position 129 in exon 3 results in strong (MICA129 met) or weak (MICA129 val) binding to NKG2D. The MICA A5.1 allele causes a premature stop codon. Various NKG2D polymorphisms are associated with low (NKC3 C/C and NKC4 C/C) or high (NKC3 G/G and NKC4 T/T) levels of NK cell cytotoxic activity. In 162 patients with spondyloarthritis (115 with ankylosing spondyloarthritis, 46 with psoriatic arthritis and 1 with reactive arthritis) compared to 124 healthy controls, MICA-129 with methionine allele was more frequent in patients with spondyloarthritis (odds ratio (OR) (95% confidence interval) = 4.84 (2.75‒8.67)), whereas MICA-129 val/val, MICA A5.1 and NKC3 C/C variants were less frequent (OR = 0.20 (0.11‒0.37), 0.15 (0.06‒0.36) and 0.24 (0.13‒0.44), respectively). After adjustment for HLA-B*27 status, only NKC3 C/C remained linked to spondyloarthritis (adjusted OR = 0.14 (0.06‒0.33)). Homozygosity for MICA A5.1 is linked to ankylosing spondyloarthritis, and NKC3 C/C and MICA-129 val/val to psoriatic arthritis. MICA and NKC3 polymorphisms (related to a low NK cell cytotoxic activity) constituted a genetic association with spondyloarthritis.
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Affiliation(s)
- Marie Fechtenbaum
- Department of Rheumatology, Amiens University Medical Center, Amiens, France. .,Jules Verne University of Picardie, EA HEMATIM, Amiens, France.
| | - Judith Desoutter
- Department of Hematology and Histocompatibility, Amiens University Medical Center, Amiens, France
| | - Gauthier Delvallez
- Department of Hematology and Histocompatibility, Amiens University Medical Center, Amiens, France
| | - Etienne Brochot
- Department of Virology, Amiens University Medical Center, Amiens, France
| | - Nicolas Guillaume
- Jules Verne University of Picardie, EA HEMATIM, Amiens, France. .,Department of Hematology and Histocompatibility, Amiens University Medical Center, Amiens, France.
| | - Vincent Goëb
- Department of Rheumatology, Amiens University Medical Center, Amiens, France.,Jules Verne University of Picardie, EA HEMATIM, Amiens, France
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20
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Sheppard S, Ferry A, Guedes J, Guerra N. The Paradoxical Role of NKG2D in Cancer Immunity. Front Immunol 2018; 9:1808. [PMID: 30150983 PMCID: PMC6099450 DOI: 10.3389/fimmu.2018.01808] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 07/23/2018] [Indexed: 12/12/2022] Open
Abstract
The activating receptor NKG2D and its ligands are recognized as a potent immune axis that controls tumor growth and microbial infections. With regards to cancer surveillance, various studies have demonstrated the antitumor function mediated by NKG2D on natural killer cells and on conventional and unconventional T cells. The use of NKG2D-deficient mice established the importance of NKG2D in delaying tumor development in transgenic mouse models of cancer. However, we recently demonstrated an unexpected, flip side to this coin, the ability for NKG2D to contribute to tumor growth in a model of inflammation-driven liver cancer. With a focus on the liver, here, we review current knowledge of NKG2D-mediated tumor surveillance and discuss evidence supporting a dual role for NKG2D in cancer immunity. We postulate that in certain advanced cancers, expression of ligands for NKG2D can drive cancer progression rather than rejection. We propose that the nature of the microenvironment within and surrounding tumors impacts the outcome of NKG2D activation. In a form of autoimmune attack, NKG2D promotes tissue damage, mostly in the inflamed tissue adjacent to the tumor, facilitating tumor progression while being ineffective at rejecting transformed cells in the tumor bed.
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Affiliation(s)
- Sam Sheppard
- Department of Life Sciences, Imperial College London, London, United Kingdom.,Memorial Sloan Kettering Cancer Center, Zuckerman Research Center, New York, NY, United States
| | - Amir Ferry
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Joana Guedes
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Nadia Guerra
- Department of Life Sciences, Imperial College London, London, United Kingdom
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21
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Lin Z, Han S, Qian X, Hu C, Xiao W, Qian L, Zhang Y, Ding Y, Jia X, Zhu G, Gong W. Regulatory NK1.1 -CD4 +NKG2D + subset induced by NKG2DL + cells promotes tumor evasion in mice. Cancer Immunol Immunother 2018; 67:1159-1173. [PMID: 29802426 PMCID: PMC11028319 DOI: 10.1007/s00262-018-2172-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 05/12/2018] [Indexed: 12/24/2022]
Abstract
Regulatory T cells play critical roles in self-tolerance and tumor evasion. CD4+NKG2D+ cells with regulatory activity are present in patients with NKG2DL+ tumors and juvenile systemic lupus erythematosus. We previously showed that TGF-β-producing CD4+NKG2D+ T cells are present in pCD86-Rae-1ε transgenic mice. Here, we performed both ex vivo and in vivo studies on pCD86-Rae-1ε transgenic mice and an MC38 tumor-bearing mouse model and show that NK1.1-CD4+NKG2D+ T cells have regulatory activity in pCD86-Rae-1ε transgenic mice. Furthermore, this T-cell subset was induced in mice transplanted with NKG2DL+ tumor cells and produced TGF-β and FasL, and secreted low amounts of IFN-γ. This T-cell subset downregulated the function of effector T cells and dendritic cells, which were abolished by anti-TGF-β antibody. In vivo, adoptive transfer of NK1.1-CD4+NKG2D+ T cells promoted TGF-β-dependent tumor growth in mice. We further found that ex vivo induction of NK1.1-CD4+NKG2D+ T cells was dependent on both anti-CD3 and NKG2DL stimulation. Furthermore, regulatory NK1.1-CD4+NKG2D+ T cells did not express Foxp3 or CD25 and expressed intermediate levels of T-bet. Western-blotting showed that STAT3 signaling was activated in NK1.1-CD4+NKG2D+ T cells of MC38 tumor-bearing and pCD86-Rae-1ε transgenic mice. In conclusion, we describe a regulatory NK1.1-CD4+NKG2D+ T-cell population, different from other regulatory T cells and abnormally elevated in pCD86-Rae-1ε transgenic and MC38 tumor-bearing mice.
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Affiliation(s)
- Zhijie Lin
- Department of Immunology, Institute of Translational Medicine, Medical College, Yangzhou University, 11 Huaihai Road, Yangzhou, 225001, People's Republic of China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, People's Republic of China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, 48 E. Wenhui Road, Yangzhou, 225009, People's Republic of China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, People's Republic of China
| | - Sen Han
- Department of Immunology, Institute of Translational Medicine, Medical College, Yangzhou University, 11 Huaihai Road, Yangzhou, 225001, People's Republic of China
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, People's Republic of China
| | - Xingxing Qian
- Department of Immunology, Institute of Translational Medicine, Medical College, Yangzhou University, 11 Huaihai Road, Yangzhou, 225001, People's Republic of China
| | - Chunxia Hu
- Department of Immunology, Institute of Translational Medicine, Medical College, Yangzhou University, 11 Huaihai Road, Yangzhou, 225001, People's Republic of China
| | - Weiming Xiao
- Department of Gastroenterology, Affiliated Hospital, Yangzhou University, Yangzhou, People's Republic of China
| | - Li Qian
- Department of Immunology, Institute of Translational Medicine, Medical College, Yangzhou University, 11 Huaihai Road, Yangzhou, 225001, People's Republic of China
| | - Yu Zhang
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, 48 E. Wenhui Road, Yangzhou, 225009, People's Republic of China
| | - Yanbing Ding
- Department of Gastroenterology, Affiliated Hospital, Yangzhou University, Yangzhou, People's Republic of China
| | - Xiaoqin Jia
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, People's Republic of China
| | - Guoqiang Zhu
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, 48 E. Wenhui Road, Yangzhou, 225009, People's Republic of China.
| | - Weijuan Gong
- Department of Immunology, Institute of Translational Medicine, Medical College, Yangzhou University, 11 Huaihai Road, Yangzhou, 225001, People's Republic of China.
- Department of Gastroenterology, Affiliated Hospital, Yangzhou University, Yangzhou, People's Republic of China.
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, People's Republic of China.
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, 48 E. Wenhui Road, Yangzhou, 225009, People's Republic of China.
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, People's Republic of China.
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22
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Babic M, Romagnani C. The Role of Natural Killer Group 2, Member D in Chronic Inflammation and Autoimmunity. Front Immunol 2018; 9:1219. [PMID: 29910814 PMCID: PMC5992374 DOI: 10.3389/fimmu.2018.01219] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/15/2018] [Indexed: 01/06/2023] Open
Abstract
Current medicine and medical science puts great effort into elucidating the basis of chronicity and finding appropriate treatments for inflammatory diseases; however, the mechanisms driving aberrant immune responses are mostly unknown and deserve further study. Of particular interest is the identification of checkpoints that regulate the function and differentiation of pro-inflammatory cells during pathogenesis, along with means of their modulation for therapeutic purposes. Natural killer group 2, member D (NKG2D) is a potent activator of the immune system, known as a sensor for “induced-self” ligands, i.e., cellular danger signals that, in the context of chronic inflammation and autoimmunity, can be presented by cells being exposed to an inflammatory cytokine milieu, endoplasmic reticulum stress, or cell death. Engagement by such ligands can be translated by NKG2D into activation or co-stimulation of NK cells and different subsets of T cells, respectively, thus contributing to the regulation of the inflammatory response. In this review, we discuss the current knowledge on the contribution of the NKG2D–NKG2DL signaling axis during intestinal inflammation, type 1 diabetes, multiple sclerosis, and rheumatoid arthritis, where the role of NKG2D has been associated either by aberrant expression of the receptor and its ligands and/or by functional data in corresponding mouse models.
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Affiliation(s)
- Marina Babic
- Innate Immunity, German Rheumatism Research Center (DRFZ), Leibniz Association, Berlin, Germany.,Medical Department I, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Chiara Romagnani
- Innate Immunity, German Rheumatism Research Center (DRFZ), Leibniz Association, Berlin, Germany.,Medical Department I, Charité - Universitätsmedizin Berlin, Berlin, Germany
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23
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Stojanovic A, Correia MP, Cerwenka A. The NKG2D/NKG2DL Axis in the Crosstalk Between Lymphoid and Myeloid Cells in Health and Disease. Front Immunol 2018; 9:827. [PMID: 29740438 PMCID: PMC5924773 DOI: 10.3389/fimmu.2018.00827] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 04/04/2018] [Indexed: 12/15/2022] Open
Abstract
Natural killer group 2, member D (NKG2D) receptor is a type II transmembrane protein expressed by both innate and adaptive immune cells, including natural killer (NK) cells, CD8+ T cells, invariant NKT cells, γδ T cells, and some CD4+ T cells under certain pathological conditions. NKG2D is an activating NK receptor that induces cytotoxicity and production of cytokines by effector cells and supports their proliferation and survival upon engagement with its ligands. In both innate and T cell populations, NKG2D can costimulate responses induced by other receptors, such as TCR in T cells or NKp46 in NK cells. NKG2D ligands (NKG2DLs) are remarkably diverse. Initially, NKG2DL expression was typically attributed to stressed, infected, or transformed cells, thus signaling “dysregulated-self.” However, many reports indicated their expression under homeostatic conditions, usually in the context of cell activation and/or proliferation. Myeloid cells, including macrophages and dendritic cells (DCs), are among the first cells sensing and responding to pathogens and tissue damage. By secreting a plethora of soluble mediators, by presenting antigens to T cells and by expressing costimulatory molecules, myeloid cells play vital roles in inducing and supporting responses of other immune cells in lymphoid organs and tissues. When activated, both macrophages and DCs upregulate NKG2DLs, thereby enabling them with additional mechanisms for regulating lymphocyte responses. In this review, we will focus on the expression of NKG2D by innate and adaptive lymphocytes, the regulation of NKG2DL expression on myeloid cells, and the contribution of the NKG2D/NKG2DL axis to the crosstalk of myeloid cells with NKG2D-expressing lymphocytes. In addition, we will highlight pathophysiological conditions associated with NKG2D/NKG2DL dysregulation and discuss the putative involvement of the NKG2D/NKG2DL axis in the lymphocyte/myeloid cell crosstalk in these diseases.
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Affiliation(s)
- Ana Stojanovic
- Innate Immunity (D080), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Immunobiochemistry, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Margareta P Correia
- Innate Immunity (D080), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Immunobiochemistry, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Adelheid Cerwenka
- Innate Immunity (D080), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Department of Immunobiochemistry, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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24
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Wensveen FM, Jelenčić V, Polić B. NKG2D: A Master Regulator of Immune Cell Responsiveness. Front Immunol 2018; 9:441. [PMID: 29568297 PMCID: PMC5852076 DOI: 10.3389/fimmu.2018.00441] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 02/19/2018] [Indexed: 01/11/2023] Open
Abstract
NKG2D is an activating receptor that is mostly expressed on cells of the cytotoxic arm of the immune system. Ligands of NKG2D are normally of low abundance, but can be induced in virtually any cell in response to stressors, such as infection and oncogenic transformation. Engagement of NKG2D stimulates the production of cytokines and cytotoxic molecules and traditionally this receptor is, therefore, viewed as a molecule that mediates direct responses against cellular threats. However, accumulating evidence indicates that this classical view is too narrow. During NK cell development, engagement of NKG2D has a long-term impact on the expression of NK cell receptors and their responsiveness to extracellular cues, suggesting a role in NK cell education. Upon chronic NKG2D engagement, both NK and T cells show reduced responsiveness of a number of activating receptors, demonstrating a role of NKG2D in induction of peripheral tolerance. The image that emerges is that NKG2D can mediate both inhibitory and activating signals, which depends on the intensity and duration of ligand engagement. In this review, we provide an overview of the impact of NKG2D stimulation during hematopoietic development and during acute and chronic stimulation in the periphery on responsiveness of other receptors than NKG2D. We propose that NKG2D interprets the context of the immunological environment through detection of cellular cues and in response sets the appropriate activation threshold for a large number of immune receptors. This perspective is of particular importance for future therapies that aim to exploit NKG2D signaling to fight tumors or infection.
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Affiliation(s)
- Felix M Wensveen
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Vedrana Jelenčić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Bojan Polić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
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25
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Prajapati K, Perez C, Rojas LBP, Burke B, Guevara-Patino JA. Functions of NKG2D in CD8 + T cells: an opportunity for immunotherapy. Cell Mol Immunol 2018; 15:470-479. [PMID: 29400704 DOI: 10.1038/cmi.2017.161] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/30/2017] [Accepted: 11/30/2017] [Indexed: 12/19/2022] Open
Abstract
Natural killer group 2 member D (NKG2D) is a type II transmembrane receptor. NKG2D is present on NK cells in both mice and humans, whereas it is constitutively expressed on CD8+ T cells in humans but only expressed upon T-cell activation in mice. NKG2D is a promiscuous receptor that recognizes stress-induced surface ligands. In NK cells, NKG2D signaling is sufficient to unleash the killing response; in CD8+ T cells, this requires concurrent activation of the T-cell receptor (TCR). In this case, the function of NKG2D is to authenticate the recognition of a stressed target and enhance TCR signaling. CD28 has been established as an archetype provider of costimulation during T-cell priming. It has become apparent, however, that signals from other costimulatory receptors, such as NKG2D, are required for optimal T-cell function outside the priming phase. This review will focus on the similarities and differences between NKG2D and CD28; less well-described characteristics of NKG2D, such as the potential role of NKG2D in CD8+ T-cell memory formation, cancer immunity and autoimmunity; and the opportunities for targeting NKG2D in immunotherapy.
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Affiliation(s)
- Kushal Prajapati
- Loyola University Chicago, Oncology Institute, 60153, Maywood, IL, USA
| | - Cynthia Perez
- Loyola University Chicago, Oncology Institute, 60153, Maywood, IL, USA
| | | | - Brianna Burke
- Loyola University Chicago, Oncology Institute, 60153, Maywood, IL, USA
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26
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Iwaszko M, Świerkot J, Kolossa K, Jeka S, Wiland P, Bogunia-Kubik K. Influence of NKG2D Genetic Variants on Response to Anti-TNF Agents in Patients with Rheumatoid Arthritis. Genes (Basel) 2018; 9:genes9020064. [PMID: 29370129 PMCID: PMC5852560 DOI: 10.3390/genes9020064] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/16/2018] [Accepted: 01/18/2018] [Indexed: 12/15/2022] Open
Abstract
A natural killer group 2 member D (NKG2D) acts as a powerful activating and co-stimulatory receptor on immune effector cells including NK and T cells. Disruptions within the NKG2D signalling pathway may trigger an exacerbated immune response and promote autoimmune reactions. The objective of the study was to evaluate a plausible role of polymorphisms within the NKG2D gene as a predictor of how effective anti-tumor necrosis factor (TNF) therapy is in rheumatoid arthritis (RA) patients. A total of 280 RA patients receiving anti-TNF therapy were genotyped for NKG2D rs2255336 (A > G), rs1049174 (C > G), and rs1154831 (C > A). Clinical response was evaluated according to the European League against Rheumatism (EULAR) criteria at the 12th and 24th week. Both the NKG2D rs225336 and rs1049174 polymorphisms were significantly associated with efficacy of TNF inhibitors. Inefficient therapy was more frequently observed in patients with rs2255336 GG or rs1049174 CC genotype as compared to other genotypes (p-value = 0.003 and p-value = 0.004, respectively). The presence of the rs2255336 G or the rs1049174 C allele correlated with a worse EULAR response (p-value = 0.002, p-value = 0.031, respectively). Moreover, patients carrying the rs2255336 or rs1049174 heterozygous genotype achieved better EULAR responses than patients with homozygous genotypes (p-value = 0.010 and p-value = 0.002, respectively). Data from the present study provides evidence that NKG2D polymorphisms may affect response to anti-TNF inhibitors in RA patients.
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Affiliation(s)
- Milena Iwaszko
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
| | - Jerzy Świerkot
- Department of Rheumatology and Internal Medicine, Wrocław Medical University, Borowska 213, 50-556 Wrocław, Poland.
| | - Katarzyna Kolossa
- Clinical Department of Rheumatology and Connective Tissue Diseases, Hospital University Number 2 Jana Biziela, Ujejskiego 75, 85-168 Bydgoszcz, Poland.
| | - Sławomir Jeka
- Clinical Department of Rheumatology and Connective Tissue Diseases, Hospital University Number 2 Jana Biziela, Ujejskiego 75, 85-168 Bydgoszcz, Poland.
| | - Piotr Wiland
- Department of Rheumatology and Internal Medicine, Wrocław Medical University, Borowska 213, 50-556 Wrocław, Poland.
| | - Katarzyna Bogunia-Kubik
- Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
- Department of Internal, Occupational Diseases, Hypertension and Clinical Oncology, Wrocław Medical University, Borowska 213, 50-556 Wrocław, Poland.
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27
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McCarthy MT, Moncayo G, Hiron TK, Jakobsen NA, Valli A, Soga T, Adam J, O'Callaghan CA. Purine nucleotide metabolism regulates expression of the human immune ligand MICA. J Biol Chem 2017; 293:3913-3924. [PMID: 29279329 DOI: 10.1074/jbc.m117.809459] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 12/12/2017] [Indexed: 12/31/2022] Open
Abstract
Expression of the cell-surface glycoprotein MHC class I polypeptide-related sequence A (MICA) is induced in dangerous, abnormal, or "stressed" cells, including cancer cells, virus-infected cells, and rapidly proliferating cells. MICA is recognized by the activating immune cell receptor natural killer group 2D (NKG2D), providing a mechanism by which immune cells can identify and potentially eliminate pathological cells. Immune recognition through NKG2D is implicated in cancer, atherosclerosis, transplant rejection, and inflammatory diseases, such as rheumatoid arthritis. Despite the wide range of potential therapeutic applications of MICA manipulation, the factors that control MICA expression are unclear. Here we use metabolic interventions and metabolomic analyses to show that the transition from quiescent cellular metabolism to a "Warburg" or biosynthetic metabolic state induces MICA expression. Specifically, we show that glucose transport into the cell and active glycolytic metabolism are necessary to up-regulate MICA expression. Active purine synthesis is necessary to support this effect of glucose, and increases in purine nucleotide levels are sufficient to induce MICA expression. Metabolic induction of MICA expression directly influences NKG2D-dependent cytotoxicity by immune cells. These findings support a model of MICA regulation whereby the purine metabolic activity of individual cells is reflected by cell-surface MICA expression and is the subject of surveillance by NKG2D receptor-expressing immune cells.
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Affiliation(s)
- Michael T McCarthy
- From the Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Gerard Moncayo
- From the Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Thomas K Hiron
- From the Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Niels A Jakobsen
- From the Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom
| | - Alessandro Valli
- the Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom, and
| | - Tomoyoshi Soga
- the Institute for Advanced Biosciences, Keio University, 246-2 Mizukami, Kakuganji, Tsuruoka, Yamagata 997-0052, Japan
| | - Julie Adam
- From the Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom.,the Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7FZ, United Kingdom, and
| | - Christopher A O'Callaghan
- From the Wellcome Trust Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, United Kingdom,
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28
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Antonangeli F, Soriani A, Cerboni C, Sciumè G, Santoni A. How Mucosal Epithelia Deal with Stress: Role of NKG2D/NKG2D Ligands during Inflammation. Front Immunol 2017; 8:1583. [PMID: 29209320 PMCID: PMC5701928 DOI: 10.3389/fimmu.2017.01583] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 11/03/2017] [Indexed: 01/22/2023] Open
Abstract
Mucosal epithelia encounter both physicochemical and biological stress during their life and have evolved several mechanisms to deal with them, including regulation of immune cell functions. Stressed and damaged cells need to be cleared to control local inflammation and trigger tissue healing. Engagement of the activating NKG2D receptor is one of the most direct mechanisms involved in the recognition of stressed cells by the immune system. Indeed, injured cells promptly express NKG2D ligands that in turn mediate the activation of lymphocytes of both innate and adaptive arms of the immune system. This review focuses on different conditions that are able to modulate NKG2D ligand expression on the epithelia. Special attention is given to the mechanisms of immunosurveillance mediated by natural killer cells, which are finely tuned by NKG2D. Different types of stress, including viral and bacterial infections, chronic inflammation, and cigarette smoke exposure, are discussed as paradigmatic conditions for NKG2D ligand modulation, and the implications for tissue homeostasis are discussed.
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Affiliation(s)
- Fabrizio Antonangeli
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy
| | - Alessandra Soriani
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy
| | - Cristina Cerboni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy
| | - Giuseppe Sciumè
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy
| | - Angela Santoni
- Department of Molecular Medicine, Sapienza University of Rome, Laboratory Affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy.,Neuromed I.R.C.C.S. - Istituto Neurologico Mediterraneo, Pozzilli, Italy
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29
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Peeters LM, Vanheusden M, Somers V, Van Wijmeersch B, Stinissen P, Broux B, Hellings N. Cytotoxic CD4+ T Cells Drive Multiple Sclerosis Progression. Front Immunol 2017; 8:1160. [PMID: 28979263 PMCID: PMC5611397 DOI: 10.3389/fimmu.2017.01160] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 09/01/2017] [Indexed: 12/27/2022] Open
Abstract
Multiple sclerosis (MS) is the leading cause of chronic neurological disability in young adults. The clinical disease course of MS varies greatly between individuals, with some patients progressing much more rapidly than others, making prognosis almost impossible. We previously discovered that cytotoxic CD4+ T cells (CD4+ CTL), identified by the loss of CD28, are able to migrate to sites of inflammation and that they contribute to tissue damage. Furthermore, in an animal model for MS, we showed that these cells are correlated with inflammation, demyelination, and disability. Therefore, we hypothesize that CD4+ CTL drive progression of MS and have prognostic value. To support this hypothesis, we investigated whether CD4+ CTL are correlated with worse clinical outcome and evaluated the prognostic value of these cells in MS. To this end, the percentage of CD4+CD28null T cells was measured in the blood of 176 patients with relapsing-remitting MS (=baseline). Multimodal evoked potentials (EP) combining information on motoric, visual, and somatosensoric EP, as well as Kurtzke expanded disability status scale (EDSS) were used as outcome measurements at baseline and after 3 and 5 years. The baseline CD4+CD28null T cell percentage is associated with EP (P = 0.003, R2 = 0.28), indicating a link between these cells and disease severity. In addition, the baseline CD4+CD28null T cell percentage has a prognostic value since it is associated with EP after 3 years (P = 0.005, R2 = 0.29) and with EP and EDSS after 5 years (P = 0.008, R2 = 0.42 and P = 0.003, R2 = 0.27). To the best of our knowledge, this study provides the first direct link between the presence of CD4+ CTL and MS disease severity, as well as its prognostic value. Therefore, we further elaborate on two important research perspectives: 1° investigating strategies to block or reverse pathways in the formation of these cells resulting in new treatments that slow down MS disease progression, 2° including immunophenotyping in prediction modeling studies to aim for personalized medicine.
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Affiliation(s)
- Liesbet M. Peeters
- School of Life Sciences, Biomedical Research Institute, Hasselt University, Transnationale Universiteit Limburg, Diepenbeek, Belgium
| | - Marjan Vanheusden
- School of Life Sciences, Biomedical Research Institute, Hasselt University, Transnationale Universiteit Limburg, Diepenbeek, Belgium
| | - Veerle Somers
- School of Life Sciences, Biomedical Research Institute, Hasselt University, Transnationale Universiteit Limburg, Diepenbeek, Belgium
| | - Bart Van Wijmeersch
- School of Life Sciences, Biomedical Research Institute, Hasselt University, Transnationale Universiteit Limburg, Diepenbeek, Belgium
| | - Piet Stinissen
- School of Life Sciences, Biomedical Research Institute, Hasselt University, Transnationale Universiteit Limburg, Diepenbeek, Belgium
| | - Bieke Broux
- School of Life Sciences, Biomedical Research Institute, Hasselt University, Transnationale Universiteit Limburg, Diepenbeek, Belgium
| | - Niels Hellings
- School of Life Sciences, Biomedical Research Institute, Hasselt University, Transnationale Universiteit Limburg, Diepenbeek, Belgium
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30
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NKG2D +CD4 + T Cells Kill Regulatory T Cells in a NKG2D-NKG2D Ligand- Dependent Manner in Systemic Lupus Erythematosus. Sci Rep 2017; 7:1288. [PMID: 28455530 PMCID: PMC5430709 DOI: 10.1038/s41598-017-01379-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 03/27/2017] [Indexed: 11/09/2022] Open
Abstract
Systemic lupus erythematosus (SLE) features a decreased pool of CD4+CD25+Foxp3+ T regulatory (Treg) cells. We had previously observed NKG2D+CD4+ T cell expansion in contrast to a decreased pool of Treg cells in SLE patients, but whether NKG2D+CD4+ T cells contribute to the decreased Treg cells remains unclear. In the present study, we found that the NKG2D+CD4+ T cells efficiently killed NKG2D ligand (NKG2DL)+ Treg cells in vitro, whereby the surviving Treg cells in SLE patients showed no detectable expression of NKG2DLs. It was further found that MRL/lpr lupus mice have significantly increased percentage of NKG2D+CD4+ T cells and obvious decreased percentage of Treg cells, as compared with wild-type mice. Adoptively transferred NKG2DL+ Treg cells were found to be efficiently killed in MRL/lpr lupus mice, with NKG2D neutralization remarkably attenuating this killing. Anti-NKG2D or anti-interferon-alpha receptor (IFNAR) antibodies treatment in MRL/lpr mice restored Treg cells numbers and markedly ameliorated the lupus disease. These results suggest that NKG2D+CD4+ T cells are involved in the pathogenesis of SLE by killing Treg cells in a NKG2D-NKG2DL-dependent manner. Targeting the NKG2D-NKG2DL interaction might be a potential therapeutic strategy by which Treg cells can be protected from cytolysis in SLE patients.
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31
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Arthritis models: usefulness and interpretation. Semin Immunopathol 2017; 39:469-486. [PMID: 28349194 DOI: 10.1007/s00281-017-0622-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 03/09/2017] [Indexed: 12/20/2022]
Abstract
Animal models of arthritis are used to better understand pathophysiology of a disease or to seek potential therapeutic targets or strategies. Focusing on models currently used for studying rheumatoid arthritis, we show here in which extent models were invaluable to enlighten different mechanisms such as the role of innate immunity, T and B cells, vessels, or microbiota. Moreover, models were the starting point of in vivo application of cytokine-blocking strategies such as anti-TNF or anti-IL-6 treatments. The most popular models are the different types of collagen-induced arthritis and arthritis in KBN mice. As spontaneous arthritides, human TNF-α transgenic mice are a reliable model. It is mandatory to use animal models in the respect of ethical procedure, particularly regarding the number of animals and the control of pain. Moreover, design of experiments should be of the highest level, animal models of arthritis being dedicated to exploration of well-based novelties, and never used for confirmation or replication of already proven concepts. The best interpretations of data in animal models of arthritis suppose integrated research, including translational studies from animals to humans.
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32
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Qian X, Hu C, Han S, Lin Z, Xiao W, Ding Y, Zhang Y, Qian L, Jia X, Zhu G, Gong W. NK1.1 - CD4 + NKG2D + T cells suppress DSS-induced colitis in mice through production of TGF-β. J Cell Mol Med 2017; 21:1431-1444. [PMID: 28224733 PMCID: PMC5487917 DOI: 10.1111/jcmm.13072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 11/25/2016] [Indexed: 12/23/2022] Open
Abstract
CD4+NKG2D+ T cells are associated with tumour, infection and autoimmune diseases. Some CD4+NKG2D+ T cells secrete IFN‐γ and TNF‐α to promote inflammation, but others produce TGF‐β and FasL to facilitate tumour evasion. Here, murine CD4+NKG2D+ T cells were further classified into NK1.1−CD4+NKG2D+ and NK1.1+CD4+NKG2D+ subpopulations. The frequency of NK1.1−CD4+NKG2D+ cells decreased in inflamed colons, whereas more NK1.1+CD4+NKG2D+ cells infiltrated into colons of mice with DSS‐induced colitis. NK1.1−CD4+NKG2D+ cells expressed TGF‐β and FasL without secreting IFN‐γ, IL‐21 and IL‐17 and displayed no cytotoxicity. The adoptive transfer of NK1.1−CD4+NKG2D+ cells suppressed DSS‐induced colitis largely dependent on TGF‐β. NK1.1−CD4+NKG2D+ cells did not expressed Foxp3, CD223 (LAG‐3) and GITR. The subpopulation was distinct from NK1.1+CD4+NKG2D+ cells in terms of surface markers and RNA transcription. NK1.1−CD4+NKG2D+ cells also differed from Th2 or Th17 cells because the former did not express GATA‐3 and ROR‐γt. Thus, NK1.1−CD4+NKG2D+ cells exhibited immune regulatory functions, and this T cell subset could be developed to suppress inflammation in clinics.
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Affiliation(s)
- Xingxing Qian
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, China
| | - Chunxia Hu
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, China
| | - Sen Han
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, China
| | - Zhijie Lin
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China
| | - Weiming Xiao
- Department of Gastroenterology, The Second Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Yanbing Ding
- Department of Gastroenterology, The Second Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Yu Zhang
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, China
| | - Li Qian
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, China
| | - Xiaoqing Jia
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, China
| | - Guoqiang Zhu
- Jiangsu Key Laboratory of Zoonosis, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Weijuan Gong
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou, China.,Jiangsu Key Laboratory of Zoonosis, Yangzhou, China.,Department of Gastroenterology, The Second Clinical Medical College, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
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Huang WC, Easom NJ, Tang XZ, Gill US, Singh H, Robertson F, Chang C, Trowsdale J, Davidson BR, Rosenberg WM, Fusai G, Toubert A, Kennedy PT, Peppa D, Maini MK. T Cells Infiltrating Diseased Liver Express Ligands for the NKG2D Stress Surveillance System. THE JOURNAL OF IMMUNOLOGY 2016; 198:1172-1182. [PMID: 28031333 PMCID: PMC5253436 DOI: 10.4049/jimmunol.1601313] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 11/22/2016] [Indexed: 12/23/2022]
Abstract
NK cells, which are highly enriched in the liver, are potent regulators of antiviral T cells and immunopathology in persistent viral infection. We investigated the role of the NKG2D axis in T cell/NK cell interactions in hepatitis B. Activated and hepatitis B virus (HBV)-specific T cells, particularly the CD4 fraction, expressed NKG2D ligands (NKG2DL), which were not found on T cells from healthy controls (p < 0.001). NKG2DL-expressing T cells were strikingly enriched within HBV-infected livers compared with the periphery or to healthy livers (p < 0.001). NKG2D+NK cells were also increased and preferentially activated in the HBV-infected liver (p < 0.001), in direct proportion to the percentage of MICA/B-expressing CD4 T cells colocated within freshly isolated liver tissue (p < 0.001). This suggests that NKG2DL induced on T cells within a diseased organ can calibrate NKG2D-dependent activation of local NK cells; furthermore, NKG2D blockade could rescue HBV-specific and MICA/B-expressing T cells from HBV-infected livers. To our knowledge, this is the first ex vivo demonstration that non-virally infected human T cells can express NKG2DL, with implications for stress surveillance by the large number of NKG2D-expressing NK cells sequestered in the liver.
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Affiliation(s)
- Wei-Chen Huang
- Division of Infection and Immunity, University College London, London WC1E 6JF, United Kingdom.,Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan
| | - Nicholas J Easom
- Division of Infection and Immunity, University College London, London WC1E 6JF, United Kingdom
| | - Xin-Zi Tang
- Division of Infection and Immunity, University College London, London WC1E 6JF, United Kingdom
| | - Upkar S Gill
- Centre for Immunobiology, Blizard Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AT, United Kingdom
| | - Harsimran Singh
- Division of Infection and Immunity, University College London, London WC1E 6JF, United Kingdom.,Institute for Liver and Digestive Health, University College London, London NW3 2PF, United Kingdom
| | - Francis Robertson
- Department of Surgery and Interventional Science, University College London, London WC1E 6BT, United Kingdom
| | - Chiwen Chang
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, United Kingdom; and
| | - John Trowsdale
- Department of Pathology, University of Cambridge, Cambridge CB2 1QP, United Kingdom; and
| | - Brian R Davidson
- Institute for Liver and Digestive Health, University College London, London NW3 2PF, United Kingdom.,Department of Surgery and Interventional Science, University College London, London WC1E 6BT, United Kingdom
| | - William M Rosenberg
- Institute for Liver and Digestive Health, University College London, London NW3 2PF, United Kingdom
| | - Giuseppe Fusai
- Institute for Liver and Digestive Health, University College London, London NW3 2PF, United Kingdom.,Department of Surgery and Interventional Science, University College London, London WC1E 6BT, United Kingdom
| | - Antoine Toubert
- Université Paris Diderot, Sorbonne Paris Cité, INSERM UMRS 1160, AP-HP, Hôpital Saint-Louis, Paris 75013, France
| | - Patrick T Kennedy
- Centre for Immunobiology, Blizard Institute, Bart's and the London School of Medicine and Dentistry, Queen Mary University of London, London E1 2AT, United Kingdom
| | - Dimitra Peppa
- Division of Infection and Immunity, University College London, London WC1E 6JF, United Kingdom
| | - Mala K Maini
- Division of Infection and Immunity, University College London, London WC1E 6JF, United Kingdom;
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Ruck T, Bittner S, Afzali AM, Göbel K, Glumm S, Kraft P, Sommer C, Kleinschnitz C, Preuße C, Stenzel W, Wiendl H, Meuth SG. The NKG2D-IL-15 signaling pathway contributes to T-cell mediated pathology in inflammatory myopathies. Oncotarget 2016; 6:43230-43. [PMID: 26646698 PMCID: PMC4791228 DOI: 10.18632/oncotarget.6462] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 11/14/2015] [Indexed: 12/29/2022] Open
Abstract
NKG2D is an activating receptor on T cells, which has been implicated in the pathogenesis of autoimmune diseases. T cells are critically involved in idiopathic inflammatory myopathies (IIM) and have been proposed as specific therapeutic targets. However, the mechanisms underlying T cell-mediated progressive muscle destruction in IIM remain to be elucidated. We here determined the involvement of the NKG2D – IL-15 signaling pathway. Primary human myoblasts expressed NKG2D ligands, which were further upregulated upon inflammatory stimuli. In parallel, shedding of the soluble NKG2D ligand MICA (sMICA) decreased upon inflammation potentially diminishing inhibition of NKG2D signaling. Membrane-related expression of IL-15 by myoblasts induced differentiation of naïve CD8+ T cells into highly activated, cytotoxic CD8+NKG2Dhigh T cells demonstrating NKG2D-dependent lysis of myoblasts in vitro. CD8+NKG2Dhigh T cell frequencies were increased in the peripheral blood of polymyositis (PM) patients and correlated with serum creatinine kinase concentrations, while serum sMICA levels were not significantly changed. In muscle biopsy specimens from PM patients expression of the NKG2D ligand MICA/B was upregulated, IL-15 was expressed by muscle cells, CD68+ macrophages as well as CD4+ T cells, and CD8+NKG2D+ cells were frequently detected within inflammatory infiltrates arguing for a local signaling circuit in the inflammatory muscle milieu. In conclusion, the NKG2D – IL-15 signaling pathway contributes to progressive muscle destruction in IIM potentially opening new therapeutic avenues.
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Affiliation(s)
- Tobias Ruck
- Department of Neurology, University of Muenster, Muenster, Germany
| | - Stefan Bittner
- Department of Neurology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | | | - Kerstin Göbel
- Department of Neurology, University of Muenster, Muenster, Germany
| | - Sarah Glumm
- Department of Neurology, University of Muenster, Muenster, Germany
| | - Peter Kraft
- Department of Neurology, University Hospital of Wuerzburg, Wuerzburg, Germany
| | - Claudia Sommer
- Department of Neurology, University Hospital of Wuerzburg, Wuerzburg, Germany
| | | | - Corinna Preuße
- Department of Neuropathology, Charité-Universitätsmedizin, Berlin, Germany
| | - Werner Stenzel
- Department of Neuropathology, Charité-Universitätsmedizin, Berlin, Germany
| | - Heinz Wiendl
- Department of Neurology, University of Muenster, Muenster, Germany
| | - Sven G Meuth
- Department of Neurology, University of Muenster, Muenster, Germany
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Chalan P, Bijzet J, Kroesen BJ, Boots AMH, Brouwer E. Altered Natural Killer Cell Subsets in Seropositive Arthralgia and Early Rheumatoid Arthritis Are Associated with Autoantibody Status. J Rheumatol 2016; 43:1008-16. [PMID: 27036380 DOI: 10.3899/jrheum.150644] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2016] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The role of natural killer (NK) cells in the immunopathogenesis of rheumatoid arthritis (RA) is unclear. Therefore, numerical and functional alterations of CD56(dim) and CD56(bright) NK cells in the early stages of RA development were studied. METHODS Whole blood samples from newly diagnosed, treatment-naive, seropositive (SP) and seronegative (SN) patients with RA (SP RA, n = 45 and SN RA, n = 12), patients with SP arthralgia (n = 30), and healthy controls (HC, n = 41) were assessed for numbers and frequencies of T cells, B cells, and NK cells. SP status was defined as positive for anticyclic citrullinated peptide antibodies (anti-CCP) and/or rheumatoid factor (RF). Peripheral blood mononuclear cells were used for further analysis of NK cell phenotype and function. RESULTS Total NK cell numbers were decreased in SP RA and SP arthralgia but not in SN RA. Also, NK cells from SP RA showed a decreased potency for interferon-γ (IFN-γ) production. A selective decrease of CD56(dim), but not CD56(bright), NK cells in SP RA and SP arthralgia was observed. This prompted investigation of CD16 (FcγRIIIa) triggering in NK cell apoptosis and cytokine expression. In vitro, CD16 triggering induced apoptosis of CD56(dim) but not CD56(bright) NK cells from HC. This apoptosis was augmented by adding interleukin 2 (IL-2). Also, CD16 triggering in the presence of IL-2 stimulated IFN-γ and tumor necrosis factor-α expression by CD56(dim) NK cells. CONCLUSION The decline of CD56(dim) NK cells in SP arthralgia and SP RA and the in vitro apoptosis of CD56(dim) NK cells upon CD16 triggering suggest a functional role of immunoglobulin G-containing autoantibody (anti-CCP and/or RF)-immune complexes in this process. Moreover, CD16-triggered cytokine production by CD56(dim) NK cells may contribute to systemic inflammation as seen in SP arthralgia and SP RA.
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Affiliation(s)
- Paulina Chalan
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
| | - Johan Bijzet
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
| | - Bart-Jan Kroesen
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
| | - Annemieke M H Boots
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen.
| | - Elisabeth Brouwer
- From the Department of Rheumatology and Clinical Immunology, and the Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.P. Chalan, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; J. Bijzet, BS, Department of Rheumatology and Clinical Immunology, University of Groningen; E. Brouwer, MD, PhD, Department of Rheumatology and Clinical Immunology, University of Groningen; A.M. Boots, Prof., Department of Rheumatology and Clinical Immunology, University of Groningen; B.J. Kroesen, PhD, Department of Laboratory Medicine, University of Groningen
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Gilhar A, Schrum AG, Etzioni A, Waldmann H, Paus R. Alopecia areata: Animal models illuminate autoimmune pathogenesis and novel immunotherapeutic strategies. Autoimmun Rev 2016; 15:726-35. [PMID: 26971464 DOI: 10.1016/j.autrev.2016.03.008] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 03/02/2016] [Indexed: 01/13/2023]
Abstract
One of the most common human autoimmune diseases, alopecia areata (AA), is characterized by sudden, often persisting and psychologically devastating hair loss. Animal models have helped greatly to elucidate critical cellular and molecular immune pathways in AA. The two most prominent ones are inbred C3H/HeJ mice which develop an AA-like hair phenotype spontaneously or after experimental induction, and healthy human scalp skin xenotransplanted onto SCID mice, in which a phenocopy of human AA is induced by injecting IL-2-stimulated PBMCs enriched for CD56+/NKG2D+ cells intradermally. The current review critically examines the pros and cons of the available AA animal models and how they have shaped our understanding of AA pathobiology, and the development of new therapeutic strategies. AA is thought to arise when the hair follicle's (HF) natural immune privilege (IP) collapses, inducing ectopic MHC class I expression in the HF epithelium and autoantigen presentation to autoreactive CD8+ T cells. In common with other autoimmune diseases, upregulation of IFN-γ and IL-15 is critically implicated in AA pathogenesis, as are NKG2D and its ligands, MICA, and ULBP3. The C3H/HeJ mouse model was used to identify key immune cell and molecular principles in murine AA, and proof-of-principle that Janus kinase (JAK) inhibitors are suitable agents for AA management in vivo, since both IFN-γ and IL-15 signal via the JAK pathway. Instead, the humanized mouse model of AA has been used to demonstrate the previously hypothesized key role of CD8+ T cells and NKG2D+ cells in AA pathogenesis and to discover human-specific pharmacologic targets like the potassium channel Kv1.3, and to show that the PDE4 inhibitor, apremilast, inhibits AA development in human skin. As such, AA provides a model disease, in which to contemplate general challenges, opportunities, and limitations one faces when selecting appropriate animal models in preclinical research for human autoimmune diseases.
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Affiliation(s)
- Amos Gilhar
- Skin Research Laboratory, Faculty of Medicine, Technion - Israel Institute of Technology, Flieman Medical Center, PO Box 9649, Haifa, Israel.
| | - Adam G Schrum
- Department of Immunology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Amos Etzioni
- Ruth Children Hospital, Haifa, Israel; Rappaport Medical School, Technion, Haifa, Israel
| | - Herman Waldmann
- Therapeutic Immunology Group, Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Ralf Paus
- Centre for Dermatology Research, Inst. of Inflammation and Repair, University of Manchester, Manchester, UK; Department of Dermatology, University of Münster, Münster, Germany
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37
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Abstract
Alopecia areata is an immune-mediated, nonscarring form of hair loss. A new study using human clinical samples and a mouse model demonstrates that CD8αβ⁺NKG2D⁺ T effector memory cells mediate alopecia areata in part through Janus kinase (JAK) signaling and that alopecia areata might be treated with JAK inhibitors.
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38
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Richter J, Capková K, Hříbalová V, Vannucci L, Danyi I, Malý M, Fišerová A. Collagen-induced arthritis: severity and immune response attenuation using multivalent N-acetyl glucosamine. Clin Exp Immunol 2014; 177:121-33. [PMID: 24588081 DOI: 10.1111/cei.12313] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/25/2014] [Indexed: 01/23/2023] Open
Abstract
Rheumatoid arthritis is an autoimmunity leading to considerable impairment of quality of life. N-acetyl glucosamine (GlcNAc) has been described previously as a potent modulator of experimental arthritis in animal models and is used for osteoarthritis treatment in humans, praised for its lack of adverse effects. In this study we present a comprehensive immunological analysis of multivalent GlcNAc-terminated glycoconjugate (GC) application in the treatment of collagen-induced arthritis (CIA) and its clinical outcome. We used immunohistochemistry and FACS to describe conditions on the inflammation site. Systemic and clinical effects were evaluated by FACS, cytotoxicity assay, ELISA, cytometric bead array (CBA), RT-PCR and clinical scoring. We found reduced inflammatory infiltration, NKG2D expression on NK and suppression of T, B and antigen-presenting cells (APC) in the synovia. On the systemic level, GCs prevented the activation of monocyte- and B cell-derived APCs, the rise of TNF-α and IFN-γ levels, and subsequent type II collagen (CII)-specific IgG2a formation. Moreover, we detected an increase of anti-inflammatory IL-4 mRNA in the spleen. Similar to the synovia, the GCs caused a significant reduction of NKG2D-expressing NK cells in the spleen without influencing their lytic function. GCs effectively postponed the onset of arthritic symptoms, reduced their severity and in 18% (GN8P) and 31% (GN4C) of the cases completely prevented their appearance. Our data prove that GlcNAc glycoconjugates prevent the inflammatory response, involving proinflammatory cytokine rise, APC activation and NKG2D expression, leading to the attenuation of clinical symptoms. These results support the glycobiological approach to the treatment of collagen-induced arthritis/rheumatoid arthritis (CIA/RA) as a way of bringing new prospects for more effective therapeutic interventions.
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Affiliation(s)
- J Richter
- Laboratory of Molecular Biology and Immunology, Institute of Microbiology, ASCR v.v.i., Prague, Czech Republic
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Ruck T, Bittner S, Gross CC, Breuer J, Albrecht S, Korr S, Göbel K, Pankratz S, Henschel CM, Schwab N, Staszewski O, Prinz M, Kuhlmann T, Meuth SG, Wiendl H. CD4+NKG2D+ T cells exhibit enhanced migratory and encephalitogenic properties in neuroinflammation. PLoS One 2013; 8:e81455. [PMID: 24282598 PMCID: PMC3839937 DOI: 10.1371/journal.pone.0081455] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 10/22/2013] [Indexed: 11/18/2022] Open
Abstract
Migration of encephalitogenic CD4(+) T lymphocytes across the blood-brain barrier is an essential step in the pathogenesis of multiple sclerosis (MS). We here demonstrate that expression of the co-stimulatory receptor NKG2D defines a subpopulation of CD4(+) T cells with elevated levels of markers for migration, activation, and cytolytic capacity especially when derived from MS patients. Furthermore, CD4(+)NKG2D(+) cells produce high levels of proinflammatory IFN-γ and IL-17 upon stimulation. NKG2D promotes the capacity of CD4(+)NKG2D(+) cells to migrate across endothelial cells in an in vitro model of the blood-brain barrier. CD4(+)NKG2D(+) T cells are enriched in the cerebrospinal fluid of MS patients, and a significant number of CD4(+) T cells in MS lesions coexpress NKG2D. We further elucidated the role of CD4(+)NKG2D(+) T cells in the mouse system. NKG2D blockade restricted central nervous system migration of T lymphocytes in vivo, leading to a significant decrease in the clinical and pathologic severity of experimental autoimmune encephalomyelitis, an animal model of MS. Blockade of NKG2D reduced killing of cultivated mouse oligodendrocytes by activated CD4(+) T cells. Taken together, we identify CD4(+)NKG2D(+) cells as a subpopulation of T helper cells with enhanced migratory, encephalitogenic and cytotoxic properties involved in inflammatory CNS lesion development.
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Affiliation(s)
- Tobias Ruck
- Department of Neurology, University of Münster, Münster, Germany
| | - Stefan Bittner
- Department of Neurology, University of Münster, Münster, Germany
- Interdisciplinary Center for Clinical Research (IZKF), Münster, Münster, Germany
| | | | - Johanna Breuer
- Department of Neurology, University of Münster, Münster, Germany
| | - Stefanie Albrecht
- Institute of Neuropathology, University of Münster, Münster, Germany
| | - Sabrina Korr
- Institute of Neuropathology, University of Münster, Münster, Germany
| | - Kerstin Göbel
- Department of Neurology, University of Münster, Münster, Germany
| | - Susann Pankratz
- Department of Neurology, University of Münster, Münster, Germany
| | | | - Nicholas Schwab
- Department of Neurology, University of Münster, Münster, Germany
| | - Ori Staszewski
- Institute of Neuropathology and BIOSS Centre for Biological Signaling Studies, University of Freiburg, Freiburg, Germany
| | - Marco Prinz
- Institute of Neuropathology and BIOSS Centre for Biological Signaling Studies, University of Freiburg, Freiburg, Germany
| | - Tanja Kuhlmann
- Institute of Neuropathology, University of Münster, Münster, Germany
| | - Sven G. Meuth
- Department of Neurology, University of Münster, Münster, Germany
- Institute of Physiology I - Neuropathophysiology, University of Münster, Münster, Germany
| | - Heinz Wiendl
- Department of Neurology, University of Münster, Münster, Germany
- * E-mail:
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Guerra N, Pestal K, Juarez T, Beck J, Tkach K, Wang L, Raulet DH. A selective role of NKG2D in inflammatory and autoimmune diseases. Clin Immunol 2013; 149:432-9. [PMID: 24211717 DOI: 10.1016/j.clim.2013.09.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 09/05/2013] [Accepted: 09/06/2013] [Indexed: 02/04/2023]
Abstract
The NKG2D activating receptor has been implicated in numerous autoimmune diseases. We tested the role of NKG2D in models of autoimmunity and inflammation using NKG2D knockout mice and antibody blockade experiments. The severity of experimental autoimmune encephalitis (EAE) was decreased in NKG2D-deficient mice when the disease was induced with a limiting antigen dose, but unchanged with an optimal antigen dose. Surprisingly, however, NKG2D deficiency had no detectable effect in several other models, including two models of type 1 diabetes, and a model of intestinal inflammation induced by poly(I:C). NKG2D antibody blockade in normal mice also failed to inhibit disease in the NOD diabetes model or the intestinal inflammation model. Published evidence using NKG2D knockout mice demonstrated a role for NKG2D in mouse models of atherosclerosis and liver inflammation, as well as in chronic obstructive pulmonary disease. Therefore, our results suggest that NKG2D plays selective roles in inflammatory diseases.
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Affiliation(s)
- Nadia Guerra
- Department of Molecular and Cell Biology, and Cancer Research Laboratory, 489 Life Sciences, Addition, University of California at Berkeley, Berkeley, CA 94720, USA.,Department of Life Science, Imperial College London, Imperial College Road, SW7 2AZ, London
| | - Kathleen Pestal
- Department of Molecular and Cell Biology, and Cancer Research Laboratory, 489 Life Sciences, Addition, University of California at Berkeley, Berkeley, CA 94720, USA
| | - Tiffany Juarez
- Department of Molecular and Cell Biology, and Cancer Research Laboratory, 489 Life Sciences, Addition, University of California at Berkeley, Berkeley, CA 94720, USA
| | - Jennifer Beck
- Department of Molecular and Cell Biology, and Cancer Research Laboratory, 489 Life Sciences, Addition, University of California at Berkeley, Berkeley, CA 94720, USA
| | - Karen Tkach
- Department of Molecular and Cell Biology, and Cancer Research Laboratory, 489 Life Sciences, Addition, University of California at Berkeley, Berkeley, CA 94720, USA
| | - Lin Wang
- Department of Molecular and Cell Biology, and Cancer Research Laboratory, 489 Life Sciences, Addition, University of California at Berkeley, Berkeley, CA 94720, USA
| | - David H Raulet
- Department of Molecular and Cell Biology, and Cancer Research Laboratory, 489 Life Sciences, Addition, University of California at Berkeley, Berkeley, CA 94720, USA
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Garcia-Chagollan M, Jave-Suarez LF, Haramati J, Sanchez-Hernandez PE, Aguilar-Lemarroy A, Bueno-Topete MR, Pereira-Suarez AL, Fafutis-Morris M, Cid-Arregui A, del Toro-Arreola S. Substantial increase in the frequency of circulating CD4+NKG2D+ T cells in patients with cervical intraepithelial neoplasia grade 1. J Biomed Sci 2013; 20:60. [PMID: 23947399 PMCID: PMC3751941 DOI: 10.1186/1423-0127-20-60] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 08/15/2013] [Indexed: 01/13/2023] Open
Abstract
Background The NKG2D receptor confers important activating signals to NK cells via ligands expressed during cellular stress and viral infection. This receptor has generated great interest because not only is it expressed on NK cells, but it is also seen in virtually all CD8+ cytotoxic T cells and is classically considered absent in CD4+ T cells. However, recent studies have identified a distinctive population of CD4+ T cells that do express NKG2D, which could represent a particular cytotoxic effector population involved in viral infections and chronic diseases. On the other hand, increased incidence of human papillomavirus-associated lesions in CD4+ T cell-immunocompromised individuals suggests that CD4+ T cells play a key role in controlling the viral infection. Therefore, this study was focused on identifying the frequency of NKG2D-expressing CD4+ T cells in patients with cervical intraepithelial neoplasia (CIN) 1. Additionally, factors influencing CD4+NKG2D+ T cell expansion were also measured. Results Close to 50% of patients with CIN 1 contained at least one of the 37 HPV types detected by our genotyping system. A tendency for increased CD4+ T cells and CD8+ T cells and decreased NK cells was found in CIN 1 patients. The percentage of circulating CD4+ T cells co-expressing the NKG2D receptor significantly increased in women with CIN 1 versus control group. Interestingly, the increase of CD4+NKG2D+ T cells was seen in patients with CIN 1, despite the overall levels of CD4+ T cells did not significantly increase. We also found a significant increase of soluble MICB in CIN 1 patients; however, no correlation with the presence of CD4+NKG2D+ T cells was seen. While TGF-beta was significantly decreased in the group of CIN 1 patients, both TNF-alpha and IL-15 showed a tendency to increase in this group. Conclusions Taken together, our results suggest that the significant increase within the CD4+NKG2D+ T cell population in CIN 1 patients might be the result of a chronic exposure to viral and/or pro-inflammatory factors, and concomitantly might also influence the clearance of CIN 1-type lesion.
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Affiliation(s)
- Mariel Garcia-Chagollan
- Laboratorio de Inmunología, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Sierra Mojada # 950, Colonia Independencia, Guadalajara, Jalisco CP 44340, México
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Huang M, Sun R, Wei H, Tian Z. Simultaneous knockdown of multiple ligands of innate receptor NKG2D prevents natural killer cell-mediated fulminant hepatitis in mice. Hepatology 2013; 57:277-88. [PMID: 22806577 DOI: 10.1002/hep.25959] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 06/21/2012] [Indexed: 02/03/2023]
Abstract
UNLABELLED NKG2D activation plays an important role in initiating and maintaining liver inflammation, and blockade of NKG2D recognition becomes a promising approach to alleviate liver inflammation. Treatment by silencing NKG2D ligands on hepatocytes, but not NKG2D on circulating immune cells, is more liver-specific, and simultaneous knockdown of multiple NKG2D ligands on hepatocytes will be more efficient in liver disease intervention. Here, we constructed a single vector that could simultaneously express multiple short hairpin RNAs (shRNAs) against all murine NKG2D ligands including Rae1, Mult1, and H60. After hydrodynamic injection of plasmid containing the three shRNA sequences (shRae1-shMult1-shH60), also called pRNAT-shRMH, we found the expression of all three NKG2D ligands on hepatocytes was downregulated both on messenger RNA and protein levels. Moreover, natural killer (NK) cell-mediated NKG2D-dependent fulminant hepatitis of the mice was alleviated, along with inactivation of hepatic NK cells, by pRNAT-shRMH if compared with its counterpart RNA interference vectors against single or double ligands. The therapeutic efficacy of pRNAT-shRMH was equivalent to that of injecting three monoclonal antibodies against Rae1, Mult1, and H60. For better in vivo application, we constructed a recombinant adenovirus containing pRNAT-shRMH (called Ad-RMH) with efficient hepatotropic infection capacity and observed that Ad-RMH intravenous injection exerted a similar therapeutic efficiency as plasmid pRNAT-shRMH hydrodynamic injection. Noticeably, simultaneous knockdown of multiple human NKG2D ligands (MICA/B, ULBP2, and ULBP3) also significantly attenuated NK cell cytolysis against human NKG2D ligand-positive hepatocyte L-02 cells, suggesting a possible translation into human settings. CONCLUSION Simultaneous knockdown of multiple ligands of NKG2D prevents NK cell-mediated fulminant hepatitis and is a potential therapeutic approach to treat liver diseases.
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Affiliation(s)
- Mei Huang
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, China
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Fernández-Sánchez A, Baragaño Raneros A, Carvajal Palao R, Sanz AB, Ortiz A, Ortega F, Suárez-Álvarez B, López-Larrea C. DNA demethylation and histone H3K9 acetylation determine the active transcription of the NKG2D gene in human CD8+ T and NK cells. Epigenetics 2012; 8:66-78. [PMID: 23235109 DOI: 10.4161/epi.23115] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The human activating receptor NKG2D is mainly expressed by NK, NKT, γδ T and CD8(+) T cells and, under certain conditions, by CD4(+) T cells. This receptor recognizes a diverse family of ligands (MICA, MICB and ULBPs 1-6) leading to the activation of effector cells and triggering the lysis of target cells. The NKG2D receptor-ligand system plays an important role in the immune response to infections, tumors, transplanted graft and autoantigens. Elucidation of the regulatory mechanisms of NKG2D is therefore essential for therapeutic purposes. In this study, we speculate whether epigenetic mechanisms, such as DNA methylation and histone acetylation, participate in NKG2D gene regulation in T lymphocytes and NK cells. DNA methylation in the NKG2D gene was observed in CD4(+) T lymphocytes and T cell lines (Jurkat and HUT78), while this gene was unmethylated in NKG2D-positive cells (CD8(+) T lymphocytes, NK cells and NKL cell line) and associated with high levels of histone H3 lysine 9 acetylation (H3K9Ac). Treatment with the histone acetyltransferase (HAT) inhibitor curcumin reduces H3K9Ac levels in the NKG2D gene, downregulates NKG2D transcription and leads to a marked reduction in the lytic capacity of NKG2D-mediated NKL cells. These findings suggest that differential NKG2D expression in the different cell subsets is regulated by epigenetic mechanisms and that its modulation by epigenetic treatments might provide a new strategy for treating several pathologies.
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Autoimmune disease induction in a healthy human organ: a humanized mouse model of alopecia areata. J Invest Dermatol 2012; 133:844-847. [PMID: 23096715 DOI: 10.1038/jid.2012.365] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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