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Frustaci A, Letizia C, Alfarano M, Marchionni G, Verardo R, Chimenti C. Immunomodulating and Immunosuppressive Therapy for Virus-Negative Immune-Mediated Myocarditis. Biomedicines 2024; 12:1565. [PMID: 39062138 PMCID: PMC11274480 DOI: 10.3390/biomedicines12071565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 07/11/2024] [Accepted: 07/13/2024] [Indexed: 07/28/2024] Open
Abstract
Myocarditis is an inflammatory disease of the myocardium caused by infectious and noninfectious agents. Clinical manifestations range from mildly symptomatic forms to acute heart failure, cardiogenic shock, life-threatening arrhythmias and sudden death. Myocarditis is still a challenging diagnosis because of its wide variability in clinical presentation and unpredictable course. Moreover, a standardized, specific treatment in not yet available. Immunosuppressive treatment for virus-negative lymphocytic myocarditis is still controversial. Conversely, immunosuppression is well established in sarcoidosis, eosinophilic, giant-cell, drug hypersensitivity, and trauma-related myocarditis as well as lymphocytic myocarditis associated with connective tissue diseases or with the rejection of a transplanted heart. Recently, immunosuppressive therapy has been also recognized as an effective treatment in virus-negative inflammatory cardiomyopathy. The aim of this review is to underline the role of immunomodulating and immunosuppressive therapies in patients with immune-mediated myocarditis and illustrate the different treatment strategies depending on the etiology. An endomyocardial biopsy remains the gold standard for the diagnosis of myocarditis as well as for a tailored treatment.
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Affiliation(s)
- Andrea Frustaci
- Cellular and Molecular Cardiology Laboratory, IRCCS Lazzaro Spallanzani, 00149 Rome, Italy;
- IRCCS San Raffaele, 00163 Rome, Italy
| | - Claudio Letizia
- Department of Clinical, Internal, Anaesthesiology and Cardiovascular Sciences, Sapienza University of Rome, 00161 Rome, Italy; (C.L.); (M.A.); (C.C.)
| | - Maria Alfarano
- Department of Clinical, Internal, Anaesthesiology and Cardiovascular Sciences, Sapienza University of Rome, 00161 Rome, Italy; (C.L.); (M.A.); (C.C.)
| | - Giulia Marchionni
- Policlinico San Matteo Pavia IRCCS Foundation, University of Pavia, 27100 Pavia, Italy;
| | - Romina Verardo
- Cellular and Molecular Cardiology Laboratory, IRCCS Lazzaro Spallanzani, 00149 Rome, Italy;
| | - Cristina Chimenti
- Department of Clinical, Internal, Anaesthesiology and Cardiovascular Sciences, Sapienza University of Rome, 00161 Rome, Italy; (C.L.); (M.A.); (C.C.)
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Guizar P, Abdalla AL, Monette A, Davis K, Caballero RE, Niu M, Liu X, Ajibola O, Murooka TT, Liang C, Mouland AJ. An HIV-1 CRISPR-Cas9 membrane trafficking screen reveals a role for PICALM intersecting endolysosomes and immunity. iScience 2024; 27:110131. [PMID: 38957789 PMCID: PMC11217618 DOI: 10.1016/j.isci.2024.110131] [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: 03/01/2023] [Revised: 06/12/2023] [Accepted: 05/24/2024] [Indexed: 07/04/2024] Open
Abstract
HIV-1 hijacks host proteins involved in membrane trafficking, endocytosis, and autophagy that are critical for virus replication. Molecular details are lacking but are essential to inform on the development of alternative antiviral strategies. Despite their potential as clinical targets, only a few membrane trafficking proteins have been functionally characterized in HIV-1 replication. To further elucidate roles in HIV-1 replication, we performed a CRISPR-Cas9 screen on 140 membrane trafficking proteins. We identified phosphatidylinositol-binding clathrin assembly protein (PICALM) that influences not only infection dynamics but also CD4+ SupT1 biology. The knockout (KO) of PICALM inhibited viral entry. In CD4+ SupT1 T cells, KO cells exhibited defects in intracellular trafficking and increased abundance of intracellular Gag and significant alterations in autophagy, immune checkpoint PD-1 levels, and differentiation markers. Thus, PICALM modulates a variety of pathways that ultimately affect HIV-1 replication, underscoring the potential of PICALM as a future target to control HIV-1.
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Affiliation(s)
- Paola Guizar
- Lady Davis Institute at the Jewish General Hospital, Montréal, QC H3T 1E2, Canada
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Ana Luiza Abdalla
- Lady Davis Institute at the Jewish General Hospital, Montréal, QC H3T 1E2, Canada
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Anne Monette
- Lady Davis Institute at the Jewish General Hospital, Montréal, QC H3T 1E2, Canada
| | - Kristin Davis
- Lady Davis Institute at the Jewish General Hospital, Montréal, QC H3T 1E2, Canada
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Ramon Edwin Caballero
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, QC H2X 0A9, Canada
| | - Meijuan Niu
- Lady Davis Institute at the Jewish General Hospital, Montréal, QC H3T 1E2, Canada
| | - Xinyun Liu
- Rady Faculty of Health Science, Department of Immunology, University of Manitoba, Winnipeg, MB R3E 0T5, Canada
| | - Oluwaseun Ajibola
- Rady Faculty of Health Science, Department of Immunology, University of Manitoba, Winnipeg, MB R3E 0T5, Canada
| | - Thomas T. Murooka
- Rady Faculty of Health Science, Department of Immunology, University of Manitoba, Winnipeg, MB R3E 0T5, Canada
- Rady Faculty of Health Science, Department of Medical Microbiology and Infectious Disease, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Chen Liang
- Lady Davis Institute at the Jewish General Hospital, Montréal, QC H3T 1E2, Canada
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
- Department of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
| | - Andrew J. Mouland
- Lady Davis Institute at the Jewish General Hospital, Montréal, QC H3T 1E2, Canada
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
- Department of Medicine, McGill University, Montréal, QC H4A 3J1, Canada
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Gard F, Flad LM, Weißer T, Ammer H, Deeg CA. Effects of A1 Milk, A2 Milk and the Opioid-like Peptide β-Casomorphin-7 on the Proliferation of Human Peripheral Blood Mononuclear Cells. Biomolecules 2024; 14:690. [PMID: 38927093 PMCID: PMC11201611 DOI: 10.3390/biom14060690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 06/05/2024] [Accepted: 06/11/2024] [Indexed: 06/28/2024] Open
Abstract
Special attention is given to cow's milk and its variants, with ongoing discussions about health-related impacts primarily focusing on the A1 variant in contrast to the A2 variant. The difference between these variants lies in a single amino acid alteration at position 67 of β-casein. This alteration is presumed to make the A1 variant more susceptible to enzymatic breakdown during milk digestion, leading to an increased release of the peptide β-casomorphin-7 (BCM-7). BCM-7 is hypothesized to interact with µ-opioid receptors on immune cells in humans. Although BCM-7 has demonstrated both immunosuppressive and inflammatory effects, its direct impact on the immune system remains unclear. Thus, we examined the influence of A1 and A2 milk on Concanavalin A (ConA)-stimulated human peripheral blood mononuclear cells (PBMCs), as well as the effect of experimentally digested A1 and A2 milk, containing different amounts of free BCM-7 from β-casein cleavage. Additionally, we evaluated the effects of pure BCM-7 on the proliferation of ConA-stimulated PBMCs and purified CD4+ T cells. Milk fundamentally inhibited PBMC proliferation, independent of the β-casein variant. In contrast, experimentally digested milk of both variants and pure BCM-7 showed no influence on the proliferation of PBMCs or isolated CD4+ T cells. Our results indicate that milk exerts an anti-inflammatory effect on PBMCs, regardless of the A1 or A2 β-casein variant, which is nullified after in vitro digestion. Consequently, we deem BCM-7 unsuitable as a biomarker for food-induced inflammation.
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Affiliation(s)
- Felix Gard
- Chair of Animal Physiology, Department of Veterinary Sciences, Ludwig Maximilian University of Munich, D-82152 Martinsried, Germany
| | - Lili M. Flad
- Chair of Animal Physiology, Department of Veterinary Sciences, Ludwig Maximilian University of Munich, D-82152 Martinsried, Germany
| | - Tanja Weißer
- Chair of Animal Physiology, Department of Veterinary Sciences, Ludwig Maximilian University of Munich, D-82152 Martinsried, Germany
| | - Hermann Ammer
- Chair of Pharmacology, Toxicology and Pharmacy, Department of Veterinary Sciences, Ludwig Maximilian University of Munich, D-80539 Munich, Germany
| | - Cornelia A. Deeg
- Chair of Animal Physiology, Department of Veterinary Sciences, Ludwig Maximilian University of Munich, D-82152 Martinsried, Germany
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Kumar V, Stewart Iv JH. Pattern-Recognition Receptors and Immunometabolic Reprogramming: What We Know and What to Explore. J Innate Immun 2024; 16:295-323. [PMID: 38740018 PMCID: PMC11250681 DOI: 10.1159/000539278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 05/07/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Evolutionarily, immune response is a complex mechanism that protects the host from internal and external threats. Pattern-recognition receptors (PRRs) recognize MAMPs, PAMPs, and DAMPs to initiate a protective pro-inflammatory immune response. PRRs are expressed on the cell membranes by TLR1, 2, 4, and 6 and in the cytosolic organelles by TLR3, 7, 8, and 9, NLRs, ALRs, and cGLRs. We know their downstream signaling pathways controlling immunoregulatory and pro-inflammatory immune response. However, the impact of PRRs on metabolic control of immune cells to control their pro- and anti-inflammatory activity has not been discussed extensively. SUMMARY Immune cell metabolism or immunometabolism critically determines immune cells' pro-inflammatory phenotype and function. The current article discusses immunometabolic reprogramming (IR) upon activation of different PRRs, such as TLRs, NLRs, cGLRs, and RLRs. The duration and type of PRR activated, species studied, and location of immune cells to specific organ are critical factors to determine the IR-induced immune response. KEY MESSAGE The work herein describes IR upon TLR, NLR, cGLR, and RLR activation. Understanding IR upon activating different PRRs is critical for designing better immune cell-specific immunotherapeutics and immunomodulators targeting inflammation and inflammatory diseases.
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Affiliation(s)
- Vijay Kumar
- Department of Surgery, Laboratory of Tumor Immunology and Immunotherapy, Medical Education Building-C, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - John H Stewart Iv
- Department of Surgery, Laboratory of Tumor Immunology and Immunotherapy, Medical Education Building-C, Morehouse School of Medicine, Atlanta, Georgia, USA
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Liu L, He S, Jia L, Yao H, Zhou D, Guo X, Miao L. Correlation analysis of serum TLR4 protein levels and TLR4 gene polymorphisms in gouty arthritis patients. PLoS One 2024; 19:e0300582. [PMID: 38652726 PMCID: PMC11037531 DOI: 10.1371/journal.pone.0300582] [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: 11/30/2023] [Accepted: 02/29/2024] [Indexed: 04/25/2024] Open
Abstract
OBJECTIVE The Toll-like receptor (TLR) 4-mediated nuclear factor kappa B (NF-κB) signaling pathway regulates the production of inflammatory factors and plays a key role in the pathogenesis of gouty arthritis. The aim of the present study was to investigate the link among TLR4 gene polymorphisms at various loci, protein expression, and gouty arthritis susceptibility. METHODS Between 2016 and 2021, a case-control study was used to collect a total of 1207 study subjects, including 317 male patients with gouty arthritis (gout group) and 890 healthy males (control group). The association between gout susceptibility and different genetic models was analyzed by typing three loci of the TLR4 gene (rs2149356, rs2737191, and rs10759932) using a multiplex point mutation rapid assay, and the association between protein expression and gout was confirmed by measuring TLR4 protein concentrations using enzyme-linked immunosorbent assays (ELISAs). RESULTS In a codominant models AA and AG, the rs2737191 polymorphism in the gout group increased the risk of gout compared to the AA genotype (OR = 2.249, 95%CI 1.010~5.008), and the risk of gout was higher for those carrying the G allele compared to the A allele (OR = 2.227, 95%CI 1.006~4.932). TLR4 protein expression was different between the two groups with different locus genotypes. The differences in TLR4 protein expression between the gout group and control group were statistically significant between the following genotypes: the GG and GT genotypes of the rs2149356 polymorphism; the AA and AG genotypes of the rs2737191 polymorphism; and the TT and TC genotypes of the rs10759932 polymorphism(P<0.05). The TLR4 protein level in the gout group (19.19±3.09 ng/ml) was significantly higher than that in the control group (15.85±4.75 ng/ml). CONCLUSION The AG genotype of the TLR4 gene rs2737191 polymorphism may be correlated with the development of gouty arthritis. The level of TLR4 protein expression is significantly higher in patients with gouty arthritis than in controls, and there is a correlation between high TLR4 protein expression and the development of gouty arthritis.
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Affiliation(s)
- Lu Liu
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
- School of Public Health, Xinjiang Medical University, Xinjiang, China
| | - Shuang He
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou, China
| | - Lin Jia
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Hua Yao
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Dan Zhou
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Xiaobin Guo
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Lei Miao
- School of Public Health, Xinjiang Medical University, Xinjiang, China
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Guo F, Bi Y, Yin J, Guo Y. Toll-like receptor signaling pathway involved in pathogenesis of thromboangiitis obliterans through activating of NF-κB. Clinics (Sao Paulo) 2024; 79:100357. [PMID: 38640750 PMCID: PMC11047192 DOI: 10.1016/j.clinsp.2024.100357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 04/01/2024] [Indexed: 04/21/2024] Open
Abstract
OBJECTIVES The pathogenic mechanisms of Thromboangiitis Obliterans (TAO) are not entirely known and autoimmune inflammation plays a vital role in the initiation and continuance of TAO activity. The authors investigated in this study the role of the TLR signaling pathway in the pathogenesis of TAO. METHODS First, the authors detected the expressions of MyD88, TRIF and NF-κB in vascular walls of 46 patients with TAO and 32 patients with trauma and osteosarcoma by western blot assay. Second, the authors detected the cellular localization of MyD88, TRIF and NF-κB in vascular walls of patients with TAO by immunofluorescent assay. RESULTS The protein expressions of MyD88, TRIF and NF-κB were much higher in vascular walls of TAO patients (p < 0.05). Higher expressions of MyD88 and NF-κB were detected both on vascular endothelial and vascular smooth muscle cells of TAO patients. However, higher expression of TRIF was just detected on vascular smooth muscle cells of TAO patients. CONCLUSIONS These dates suggest that the TLR signaling pathway might play an important role in the pathogenesis of TAO, it might induce vasospasm, vasculitis and thrombogenesis to lead to the pathogenesis and progression of TAO.
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Affiliation(s)
- Facai Guo
- Department of Vascular Surgery, Lanzhou University Second Hospital, Gansu, China
| | - Yan Bi
- Department of Laboratory Medicine Center, Lanzhou University Second Hospital, Gansu, China
| | - Jiangyan Yin
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yi Guo
- Department of General Surgery, Chongqing University Central Hospital (Chongqing Emergency Medical Center), Chongqing, China.
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Su C, Kim SK, Wang CX, Kirsch DG, Monjazeb AM. Radiotherapy Combined with Intralesional Immunostimulatory Agents for Soft Tissue Sarcomas. Semin Radiat Oncol 2024; 34:243-257. [PMID: 38508788 PMCID: PMC11216412 DOI: 10.1016/j.semradonc.2024.01.001] [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] [Indexed: 03/22/2024]
Abstract
Immunotherapy has shifted the treatment paradigm for many types of cancer. Unfortunately, the most commonly used immunotherapies, such as immune checkpoint inhibitors (ICI), have yielded limited benefit for most types of soft tissue sarcoma (STS). Radiotherapy (RT) is a mainstay of sarcoma therapy and can induce immune modulatory effects. Combining immunotherapy and RT in STS may be a promising strategy to improve sarcoma response to RT and increase the efficacy of immunotherapy. Most combination strategies have employed immunotherapies, such as ICI, that derepress immune suppressive networks. These have yielded only modest results, possibly due to the limited immune stimulatory effects of RT. Combining RT with immune stimulatory agents has yielded promising preclinical and clinical results but can be limited by the toxic nature of systemic administration of immune stimulants. Using intralesional immune stimulants may generate stronger RT immune modulation and less systemic toxicity, which may be a feasible strategy in accessible tumors such as STS. In this review, we summarize the immune modulatory effects of RT, the mechanism of action of various immune stimulants, including toll-like receptor agonists, and data for combinatorial strategies utilizing these agents.
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Affiliation(s)
- Chang Su
- Department of Radiation Oncology, Duke University, Durham, NC
| | - Soo Kyoung Kim
- Department of Radiation Oncology, UC Davis Comprehensive Cancer Center, UC Davis Health, Davis, CA
| | - Charles X Wang
- Department of Radiation Oncology, UC Davis Comprehensive Cancer Center, UC Davis Health, Davis, CA
| | - David G Kirsch
- Department of Radiation Oncology, Duke University, Durham, NC; Department of Radiation Oncology, Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Arta M Monjazeb
- Department of Radiation Oncology, UC Davis Comprehensive Cancer Center, UC Davis Health, Davis, CA.
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Muscat SM, Butler MJ, Bettes MN, DeMarsh JW, Scaria EA, Deems NP, Barrientos RM. Post-operative cognitive dysfunction is exacerbated by high-fat diet via TLR4 and prevented by dietary DHA supplementation. Brain Behav Immun 2024; 116:385-401. [PMID: 38145855 PMCID: PMC10872288 DOI: 10.1016/j.bbi.2023.12.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/04/2023] [Accepted: 12/20/2023] [Indexed: 12/27/2023] Open
Abstract
Post-operative cognitive dysfunction (POCD) is an abrupt decline in neurocognitive function arising shortly after surgery and persisting for weeks to months, increasing the risk of dementia diagnosis. Advanced age, obesity, and comorbidities linked to high-fat diet (HFD) consumption such as diabetes and hypertension have been identified as risk factors for POCD, although underlying mechanisms remain unclear. We have previously shown that surgery alone, or 3-days of HFD can each evoke sufficient neuroinflammation to cause memory deficits in aged, but not young rats. The aim of the present study was to determine if HFD consumption before surgery would potentiate and prolong the subsequent neuroinflammatory response and memory deficits, and if so, to determine the extent to which these effects depend on activation of the innate immune receptor TLR4, which both insults are known to stimulate. Young-adult (3mo) & aged (24mo) male F344xBN F1 rats were fed standard chow or HFD for 3-days immediately before sham surgery or laparotomy. In aged rats, the combination of HFD and surgery caused persistent deficits in contextual memory and cued-fear memory, though it was determined that HFD alone was sufficient to cause the long-lasting cued-fear memory deficits. In young adult rats, HFD + surgery caused only cued-fear memory deficits. Elevated proinflammatory gene expression in the hippocampus of both young and aged rats that received HFD + surgery persisted for at least 3-weeks after surgery. In a separate experiment, rats were administered the TLR4-specific antagonist, LPS-RS, immediately before HFD onset, which ameliorated the HFD + surgery-associated neuroinflammation and memory deficits. Similarly, dietary DHA supplementation for 4 weeks prior to HFD onset blunted the neuroinflammatory response to surgery and prevented development of persistent memory deficits. These results suggest that HFD 1) increases risk of persistent POCD-associated memory impairments following surgery in male rats in 2) a TLR4-dependent manner, which 3) can be targeted by DHA supplementation to mitigate development of persistent POCD.
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Affiliation(s)
- Stephanie M Muscat
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA; Biomedical Sciences Graduate Program, The Ohio State University, Columbus, OH, USA; Department of Neuroscience, The Ohio State University, Columbus, OH, USA
| | - Michael J Butler
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA
| | - Menaz N Bettes
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA
| | - James W DeMarsh
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA
| | - Emmanuel A Scaria
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA
| | - Nicholas P Deems
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA
| | - Ruth M Barrientos
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA; Department of Neuroscience, The Ohio State University, Columbus, OH, USA; Department of Psychiatry & Behavioral Health, The Ohio State University, Columbus, OH, USA; Chronic Brain Injury Program, The Ohio State University, Columbus, OH, USA.
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Mustafa AM, Shaheen AM, Zaki HF, Rabie MA. Nicorandil and carvedilol mitigates motor deficits in experimental autoimmune encephalomyelitis-induced multiple sclerosis: Role of TLR4/TRAF6/MAPK/NF-κB signalling cascade. Int Immunopharmacol 2024; 127:111387. [PMID: 38134593 DOI: 10.1016/j.intimp.2023.111387] [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: 11/01/2023] [Revised: 11/27/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023]
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating neurodegenerative disease that negatively affects neurotransmission. It can be pathologically mimicked by experimental autoimmune encephalomyelitis (EAE) animal model. ATP-sensitive potassium channels (KATP) plays a crucial role in the control of neuronal damage, however their role in MS are still obscure. Additionally, Carvedilol showed a promising neuroprotective activity against several neurological disorders. Therefore, the present study aimed to investigate the potential neuroprotective effect of KATP channel opener (nicorandil) as well as α and β adrenoceptor antagonist (Carvedilol) against EAE induced neurodegeneration in mice. Mice was treated with nicorandil (6 mg/kg/day; p.o.) and carvedilol (10 mg/kg/day; p.o.) for 14 days. Nicorandil and carvedilol showed improvement in clinical scoring, behaviour and motor coordination as established by histopathological investigation and immunohistochemical detection of MBP. Furthermore, both treatments downregulated the protein expression of TLR4/ MYD88/TRAF6 signalling cascade with downstream inhibition of (pT183/Y185)-JNK/p38 (pT180/Y182)-MAPK axis leading to reduction of neuroinflammatory status, as witnessed by reduction of NF-κB, TNF-α, IL-1β and IL-6 contents. Moreover, nicorandil and carvedilol attenuated oxidative damage by increasing Nrf2 content and SOD activity together with reduction of MDA content. In addition, an immunomodulating effect via inhibiting the gene expression of CD4, TGF-β, and IL-17 as well as TGF-β, IL-17, and IL-23 contents along with anti-apoptotic effect by decreasing Bax protein expression and Caspase-3 content and increasing Bcl-2 protein expression was observed with nicorandil and carvedilol treatments. In conclusion, nicorandil and carvedilol exerted a neuroprotective activity against EAE induced neuronal loss via inhibition of TLR4/MYD88/TRAF6/JNK/p38-MAPK axis besides antioxidant and anti-apoptotic effects.
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Affiliation(s)
- Aya M Mustafa
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Cairo, Egypt
| | - Aya M Shaheen
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Cairo, Egypt
| | - Hala F Zaki
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mostafa A Rabie
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
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King HAD, Pokkali S, Kim D, Brammer D, Song K, McCarthy E, Lehman C, Todd JP, Foulds KE, Darrah PA, Seder RA, Bolton DL, Roederer M. Immune Activation Profiles Elicited by Distinct, Repeated TLR Agonist Infusions in Rhesus Macaques. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1643-1655. [PMID: 37861342 PMCID: PMC10656433 DOI: 10.4049/jimmunol.2300424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/28/2023] [Indexed: 10/21/2023]
Abstract
TLR agonists are a promising class of immune system stimulants investigated for immunomodulatory applications in cancer immunotherapy and viral diseases. In this study, we sought to characterize the safety and immune activation achieved by different TLR agonists in rhesus macaques (Macaca mulatta), a useful preclinical model of complex immune interactions. Macaques received one of three TLR agonists, followed by plasma cytokine, immune cell subset representation, and blood cell activation measurements. The TLR4 agonist LPS administered i.v. induced very transient immune activation, including TNF-α expression and monocyte activation. The TLR7/8 agonist 2BXy elicited more persistent cytokine expression, including type I IFN, IL-1RA, and the proinflammatory IL-6, along with T cell and monocyte activation. Delivery of 2BXy i.v. and i.m. achieved comparable immune activation, which increased with escalating dose. Finally, i.v. bacillus Calmette-Guérin (BCG) vaccination (which activates multiple TLRs, especially TLR2/4) elicited the most pronounced and persistent innate and adaptive immune response, including strong induction of IFN-γ, IL-6, and IL-1RA. Strikingly, monocyte, T cell, and NK cell expression of the proliferation marker Ki67 increased dramatically following BCG vaccination. This aligned with a large increase in total and BCG-specific cells measured in the lung. Principal component analysis of the combined cytokine expression and cellular activation responses separated animals by treatment group, indicating distinct immune activation profiles induced by each agent. In sum, we report safe, effective doses and routes of administration for three TLR agonists that exhibit discrete immunomodulatory properties in primates and may be leveraged in future immunotherapeutic strategies.
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Affiliation(s)
- Hannah A. D. King
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD
| | - Supriya Pokkali
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
| | - Dohoon Kim
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD
| | - Daniel Brammer
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
| | - Kaimei Song
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
| | | | - Chelsea Lehman
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
| | - John-Paul Todd
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
| | - Kathryn E. Foulds
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
| | | | - Robert A. Seder
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
| | - Diane L. Bolton
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, MD
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD
| | - Mario Roederer
- Vaccine Research Center, National Institutes of Health, Bethesda, MD
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11
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Zhang Y, Zhou X, Chen S, Sun X, Zhou C. Immune mechanisms of group B coxsackievirus induced viral myocarditis. Virulence 2023; 14:2180951. [PMID: 36827455 PMCID: PMC9980623 DOI: 10.1080/21505594.2023.2180951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
Abstract
Viral myocarditis is known to be a primary cause of dilated cardiomyopathy (DCM) that can lead to heart failure and sudden cardiac death and is invariably caused by myocardial viral infection following active inflammatory destruction of the myocardium. Although acute viral myocarditis frequently recovers on its own, current chronic myocarditis therapies are unsatisfactory, where the persistence of viral or immunological insults to the heart may play a role. Cellular and mouse experimental models that utilized the most prevalent Coxsackievirus group B type 3 (CVB3) virus infection causing myocarditis have illustrated the pathophysiology of viral myocarditis. In this review, immunological insights into the different stages of development of viral myocarditis were discussed, concentrating on the mechanisms of innate and adaptive immunity in the development of CVB3-induced myocarditis.
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Affiliation(s)
- Yue Zhang
- Clinical Medical Laboratory Center, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou, China,School of public health, Nantong University, Nantong, China
| | - Xiaobin Zhou
- Clinical Medical Laboratory Center, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou, China
| | - Shuyi Chen
- Clinical Medical Laboratory Center, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou, China
| | - Xinchen Sun
- Clinical Medical Laboratory Center, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou, China
| | - Chenglin Zhou
- Clinical Medical Laboratory Center, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou, China,CONTACT Chenglin Zhou Clinical Medical Laboratory Center, The Affiliated Taizhou People’s Hospital of Nanjing Medical University, Taizhou, China
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12
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Fan W, Wang X, Zeng S, Li N, Wang G, Li R, He S, Li W, Huang J, Li X, Liu J, Hou S. Global lactylome reveals lactylation-dependent mechanisms underlying T H17 differentiation in experimental autoimmune uveitis. SCIENCE ADVANCES 2023; 9:eadh4655. [PMID: 37851814 PMCID: PMC10584346 DOI: 10.1126/sciadv.adh4655] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 09/14/2023] [Indexed: 10/20/2023]
Abstract
Dysregulation of CD4+ T cell differentiation is linked to autoimmune diseases. Metabolic reprogramming from oxidative phosphorylation to glycolysis and accumulation of lactate are involved in this process. However, the underlying mechanisms remain unclear. Our study showed that lactate-derived lactylation regulated CD4+ T cell differentiation. Lactylation levels in CD4+ T cells increased with the progression of experimental autoimmune uveitis (EAU). Inhibition of lactylation suppressed TH17 differentiation and attenuated EAU inflammation. The global lactylome revealed the landscape of lactylated sites and proteins in the CD4+ T cells of normal and EAU mice. Specifically, hyperlactylation of Ikzf1 at Lys164 promoted TH17 differentiation by directly modulating the expression of TH17-related genes, including Runx1, Tlr4, interleukin-2 (IL-2), and IL-4. Delactylation of Ikzf1 at Lys164 impaired TH17 differentiation. These findings exemplify how glycolysis regulates the site specificity of protein lactylation to promote TH17 differentiation and implicate Ikzf1 lactylation as a potential therapeutic target for autoimmune diseases.
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Affiliation(s)
- Wei Fan
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Xiaotang Wang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Shuhao Zeng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Na Li
- School of Basic Medical Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Guoqing Wang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Ruonan Li
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Siyuan He
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Wanqian Li
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Jiaxing Huang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Xingran Li
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Jiangyi Liu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Shengping Hou
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, 100730, China
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13
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Cui TX, Brady AE, Zhang YJ, Anderson C, Popova AP. IL-17a-producing γδT cells and NKG2D signaling mediate bacterial endotoxin-induced neonatal lung injury: implications for bronchopulmonary dysplasia. Front Immunol 2023; 14:1156842. [PMID: 37744375 PMCID: PMC10514485 DOI: 10.3389/fimmu.2023.1156842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 08/24/2023] [Indexed: 09/26/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic lung disease in preterm birth survivors characterized by inflammation, impaired alveolarization and dysmorphic vasculature. Activated IL-17A+ lymphocytes are key drivers of inflammation in preterm infants. We have shown that in immature mice chronic airway exposure to lipopolysaccharide (LPS) induces pulmonary inflammation, increased IL-17a expression, and hypoalveolarization, a BPD-like phenotype. The source of IL-17a and contribution to lung pathology is unknown. The natural-killer group 2, member D (NKG2D) receptor mediates activation and IL-17a production in γδ T cells by binding to stress molecules. LPS induces NKG2D ligand expression, including Rae-1 and MULT1. We hypothesized that IL-17a+ γδ T cells and NKG2D signaling mediate neonatal LPS-induced lung injury. Immature C57BL/6J (wild type), Nkg2d-/- or Tcrd-/- (lacking γδ T cells) mice were inoculated with 3ug/10ul of LPS from E. coli O26:B6 or 10ul of PBS intranasally on day of life 3, 5, 7, and 10. Selected mice were treated with neutralizing antibodies against IL-17a, or NKG2D intraperitoneally. Lung immune cells were assessed by flow cytometry and gene expression was analyzed by qPCR. Alveolar growth was assessed by lung morphometry. We established that anti-IL-17a antibody treatment attenuated LPS-induced hypoalveolarization. We found that LPS induced the fraction of IL-17a+NKG2D+ γδ T cells, a major source of IL-17a in the neonatal lung. LPS also induced lung mRNA expression of NKG2D, Rae-1, MULT1, and the DNA damage regulator p53. Anti-NKG2D treatment attenuated the effect of LPS on γδ T cell IL-17a expression, immune cell infiltration and hypoalveolarization. LPS-induced hypoalveolarization was also attenuated in Nkg2d-/- and Tcrd-/- mice. In tracheal aspirates of preterm infants IL-17A and its upstream regulator IL-23 were higher in infants who later developed BPD. Also, human ligands of NKG2D, MICA and MICB were present in the aspirates and MICA correlated with median FiO2. Our novel findings demonstrate a central role for activated IL-17a+ γδ T cells and NKG2D signaling in neonatal LPS-induced lung injury. Future studies will determine the role of NKG2D ligands and effectors, other NKG2D+ cells in early-life endotoxin-induced lung injury and inflammation with a long-term goal to understand how inflammation contributes to BPD pathogenesis.
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Affiliation(s)
| | | | | | | | - Antonia P. Popova
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, United States
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14
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Fathallah S, Abdellatif A, Saadeldin MK. Unleashing nature's potential and limitations: Exploring molecular targeted pathways and safe alternatives for the treatment of multiple sclerosis (Review). MEDICINE INTERNATIONAL 2023; 3:42. [PMID: 37680650 PMCID: PMC10481116 DOI: 10.3892/mi.2023.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/14/2023] [Indexed: 09/09/2023]
Abstract
Driven by the limitations and obstacles of the available approaches and medications for multiple sclerosis (MS) that still cannot treat the disease, but only aid in accelerating the recovery from its attacks, the use of naturally occurring molecules as a potentially safe and effective treatment for MS is being explored in model organisms. MS is a devastating disease involving the brain and spinal cord, and its symptoms vary widely. Multiple molecular pathways are involved in the pathogenesis of the disease. The present review showcases the recent advancements in harnessing nature's resources to combat MS. By deciphering the molecular pathways involved in the pathogenesis of the disease, a wealth of potential therapeutic agents is uncovered that may revolutionize the treatment of MS. Thus, a new hope can be envisioned in the future, aiming at paving the way toward identifying novel safe alternatives to improve the lives of patients with MS.
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Affiliation(s)
- Sara Fathallah
- Biotechnology Program, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
| | - Ahmed Abdellatif
- Biotechnology Program, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
- Biology Department, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
| | - Mona Kamal Saadeldin
- Biotechnology Program, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
- Biology Department, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
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15
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Wang Y, Hu Y, Liu Y, Shi C, Yu L, Lu N, Zhang C. Liver-resident CD44 hiCD27 - γδT Cells Help to Protect Against Listeria monocytogenes Infection. Cell Mol Gastroenterol Hepatol 2023; 16:923-941. [PMID: 37611663 PMCID: PMC10616555 DOI: 10.1016/j.jcmgh.2023.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 08/09/2023] [Accepted: 08/15/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND & AIMS Gamma delta (γδ) T cells are heterogeneous and functionally committed to producing interferon (IFN)-γ and interleukin (IL)-17. γδT cells are defined as tissue-resident lymphocytes in barrier tissues. Among them, IL-17-producing γδT cells are relatively abundant in the liver. However, a systematic and comprehensive understanding of the residency characteristics and function of hepatic IL-17A+ γδT cells is lacking. METHODS We undertook a single-cell analysis of γδT17 cells derived from murine livers. A parabiosis model was used to assess tissue residency. Fluorescence-activated cell sorting and adoptive transfer experiments were used to investigate the response and protective role of liver-resident CD44hiCD27- γδT cells in Listeria monocytogenes infection. Transwell assay was used to assess the role of macrophages in the chemotaxis of liver-resident CD44hiCD27- γδT cells. RESULTS We identified hepatic IL-17A-producing γδT cells as CD44hiCD27- γδT cells. They had tissue-resident characteristics and resided principally within the liver. Vγ6+ T cells also exhibited liver-resident features. Liver-resident CD44hiCD27- γδT cells had significantly increased proliferation capacity, and their proportion rapidly increased after infection. Some CD44hiCD27- γδT cells could produce IL-17A and IFN-γ simultaneously in response to Lm infection. Adoptive transfer of hepatic CD44hiCD27- γδT cells into Lm-infected TCRδ-/- mice led to markedly lower bacterial numbers in the liver. Hepatic macrophages promoted the migration and accumulation of liver-resident CD44hiCD27- γδT cells into infection sites. CONCLUSIONS Liver-resident CD44hiCD27- γδT cells protect against Lm infection. Hepatic macrophages coordinate with liver-resident CD44hiCD27- γδT cells and contribute to the clearance of Lm at the early stage of infection corporately.
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Affiliation(s)
- Yanan Wang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yuan Hu
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Yuxia Liu
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Chongdeng Shi
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Linyan Yu
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Nan Lu
- Institute of Diagnostics, School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China.
| | - Cai Zhang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China.
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16
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Portmann K, Linder A, Oelgarth N, Eyer K. Single-cell deep phenotyping of cytokine release unmasks stimulation-specific biological signatures and distinct secretion dynamics. CELL REPORTS METHODS 2023; 3:100502. [PMID: 37533643 PMCID: PMC10391336 DOI: 10.1016/j.crmeth.2023.100502] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/31/2023] [Accepted: 05/23/2023] [Indexed: 08/04/2023]
Abstract
Cytokines are important mediators of the immune system, and their secretion level needs to be carefully regulated, as an unbalanced activity may lead to cytokine release syndromes. Dysregulation can be induced by various factors, including immunotherapies. Therefore, the need for risk assessment during drug development has led to the introduction of cytokine release assays (CRAs). However, the current CRAs offer little insight into the heterogeneous cellular dynamics. To overcome this limitation, we developed an advanced single-cell microfluidic-based cytokine secretion platform to quantify cytokine secretion on the single-cell level dynamically. Our approach identified different dynamics, quantities, and phenotypically distinct subpopulations for each measured cytokine upon stimulation. Most interestingly, early measurements after only 1 h of stimulation revealed distinct stimulation-dependent secretion dynamics and cytokine signatures. With increased sensitivity and dynamic resolution, our platform provided insights into the secretion behavior of individual immune cells, adding crucial additional information about biological stimulation pathways to traditional CRAs.
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Affiliation(s)
- Kevin Portmann
- Laboratory for Functional Immune Repertoire Analysis, Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Aline Linder
- Laboratory for Functional Immune Repertoire Analysis, Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Nicole Oelgarth
- Laboratory for Functional Immune Repertoire Analysis, Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Klaus Eyer
- Laboratory for Functional Immune Repertoire Analysis, Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
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17
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Zhang C, Liu X, Xiao J, Jiang F, Fa L, Jiang H, Zhou L, Su W, Xu Z. γδ T cells in autoimmune uveitis pathogenesis: A promising therapeutic target. Biochem Pharmacol 2023; 213:115629. [PMID: 37257721 DOI: 10.1016/j.bcp.2023.115629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/24/2023] [Accepted: 05/24/2023] [Indexed: 06/02/2023]
Abstract
Autoimmune uveitis is a non-infectious, inflammatory intraocular disease that affects the uveal and adjacent tissues. It frequently causes varying degrees of visual loss. Evidence for the strong association between activated γδ T cells and the development of autoimmune uveitis is growing. The innate and adaptive immune response are connected in the early phases by the γδ T cells that contain the γ and δ chains. γδ T cells can identify antigens in a manner that is not constrained by the MHC. When activated by various pathways, γδ T cells can not only secrete pro-inflammatory factors early on (such as IL-17), but they can also promote Th17 cells responses, which ultimately exacerbates autoimmune uveitis. Therefore, we review the mechanisms by which γδ T cells affect autoimmune uveitis in different activation and disease states. Moreover, we also prospect for immunotherapies targeting different γδ T cell-related action pathways, providing a reference for exploring new drug for the treatment of autoimmune uveitis.
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Affiliation(s)
- Chun Zhang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xiuxing Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China
| | - Jing Xiao
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Fanwen Jiang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Luzhong Fa
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Hui Jiang
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Lin Zhou
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Wenru Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou 510060, China.
| | - Zhuping Xu
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
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18
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Touil H, Mounts K, De Jager PL. Differential impact of environmental factors on systemic and localized autoimmunity. Front Immunol 2023; 14:1147447. [PMID: 37283765 PMCID: PMC10239830 DOI: 10.3389/fimmu.2023.1147447] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 05/08/2023] [Indexed: 06/08/2023] Open
Abstract
The influence of environmental factors on the development of autoimmune disease is being broadly investigated to better understand the multifactorial nature of autoimmune pathogenesis and to identify potential areas of intervention. Areas of particular interest include the influence of lifestyle, nutrition, and vitamin deficiencies on autoimmunity and chronic inflammation. In this review, we discuss how particular lifestyles and dietary patterns may contribute to or modulate autoimmunity. We explored this concept through a spectrum of several autoimmune diseases including Multiple Sclerosis (MS), Systemic Lupus Erythematosus (SLE) and Alopecia Areata (AA) affecting the central nervous system, whole body, and the hair follicles, respectively. A clear commonality between the autoimmune conditions of interest here is low Vitamin D, a well-researched hormone in the context of autoimmunity with pleiotropic immunomodulatory and anti-inflammatory effects. While low levels are often correlated with disease activity and progression in MS and AA, the relationship is less clear in SLE. Despite strong associations with autoimmunity, we lack conclusive evidence which elucidates its role in contributing to pathogenesis or simply as a result of chronic inflammation. In a similar vein, other vitamins impacting the development and course of these diseases are explored in this review, and overall diet and lifestyle. Recent work exploring the effects of dietary interventions on MS showed that a balanced diet was linked to improvement in clinical parameters, comorbid conditions, and overall quality of life for patients. In patients with MS, SLE and AA, certain diets and supplements are linked to lower incidence and improved symptoms. Conversely, obesity during adolescence was linked with higher incidence of MS while in SLE it was associated with organ damage. Autoimmunity is thought to emerge from the complex interplay between environmental factors and genetic background. Although the scope of this review focuses on environmental factors, it is imperative to elaborate the interaction between genetic susceptibility and environment due to the multifactorial origin of these disease. Here, we offer a comprehensive review about the influence of recent environmental and lifestyle factors on these autoimmune diseases and potential translation into therapeutic interventions.
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Affiliation(s)
- Hanane Touil
- Center for Translational and Computational Neuroimmunology, Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States
| | - Kristin Mounts
- Center for Translational and Computational Neuroimmunology, Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States
| | - Philip Lawrence De Jager
- Center for Translational and Computational Neuroimmunology, Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States
- Columbia Multiple Sclerosis Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States
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19
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The Active Role of Pericytes During Neuroinflammation in the Adult Brain. Cell Mol Neurobiol 2023; 43:525-541. [PMID: 35195811 DOI: 10.1007/s10571-022-01208-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 02/13/2022] [Indexed: 12/11/2022]
Abstract
Microvessels in the central nervous system (CNS) have one of the highest populations of pericytes, indicating their crucial role in maintaining homeostasis. Pericytes are heterogeneous cells located around brain microvessels; they present three different morphologies along the CNS vascular tree: ensheathing, mesh, and thin-strand pericytes. At the arteriole-capillary transition ensheathing pericytes are found, while mesh and thin-strand pericytes are located at capillary beds. Brain pericytes are essential for the establishment and maintenance of the blood-brain barrier, which restricts the passage of soluble and potentially toxic molecules from the circulatory system to the brain parenchyma. Pericytes play a key role in regulating local inflammation at the CNS. Pericytes can respond differentially, depending on the degree of inflammation, by secreting a set of neurotrophic factors to promote cell survival and regeneration, or by potentiating inflammation through the release of inflammatory mediators (e.g., cytokines and chemokines), and the overexpression of cell adhesion molecules. Under inflammatory conditions, pericytes may regulate immune cell trafficking to the CNS and play a role in perpetuating local inflammation. In this review, we describe pericyte responses during acute and chronic neuroinflammation.
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20
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Hunter C, Gao Z, Chen HM, Thompson N, Wakarchuk W, Nitz M, Withers SG, Willis LM. Attenuation of Polysialic Acid Biosynthesis in Cells by the Small Molecule Inhibitor 8-Keto-sialic acid. ACS Chem Biol 2023; 18:41-48. [PMID: 36577399 DOI: 10.1021/acschembio.2c00638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Sialic acids are key mediators of cell function, particularly with regard to cellular interactions with the surrounding environment. Reagents that modulate the display of specific sialyl glycoforms at the cell surface would be useful biochemical tools and potentially allow for therapeutic intervention in numerous challenging chronic diseases. While multiple strategies are being explored for the control of cell surface sialosides, none that shows high selectivity between sialyltransferases or that targets a specific sialyl glycoform has yet to emerge. Here, we describe a strategy to block the formation of α2,8-linked sialic acid chains (oligo- and polysialic acid) through the use of 8-keto-sialic acid as a chain-terminating metabolic inhibitor that, if incorporated, cannot be elongated. 8-Keto-sialic acid is nontoxic at effective concentrations and serves to block polysialic acid synthesis in cancer cell lines and primary immune cells, with minimal effects on other sialyl glycoforms.
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Affiliation(s)
- Carmanah Hunter
- Department of Biological Sciences, University of Alberta, Edmonton, T6G 2R3, Canada
| | - Zhizeng Gao
- Department of Chemistry, University of British Columbia, Vancouver, V6T 1Z1, Canada
| | - Hong-Ming Chen
- Department of Chemistry, University of Toronto, Toronto, M5S 3H6, Canada
| | - Nicole Thompson
- Department of Biological Sciences, University of Alberta, Edmonton, T6G 2R3, Canada
| | - Warren Wakarchuk
- Department of Biological Sciences, University of Alberta, Edmonton, T6G 2R3, Canada
| | - Mark Nitz
- Department of Chemistry, University of Toronto, Toronto, M5S 3H6, Canada
| | - Stephen G Withers
- Department of Chemistry, University of British Columbia, Vancouver, V6T 1Z1, Canada
| | - Lisa M Willis
- Department of Biological Sciences, University of Alberta, Edmonton, T6G 2R3, Canada
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21
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Aljabali AA, Obeid MA, Bashatwah RM, Serrano-Aroca Á, Mishra V, Mishra Y, El-Tanani M, Hromić-Jahjefendić A, Kapoor DN, Goyal R, Naikoo GA, Tambuwala MM. Nanomaterials and Their Impact on the Immune System. Int J Mol Sci 2023; 24:ijms24032008. [PMID: 36768330 PMCID: PMC9917130 DOI: 10.3390/ijms24032008] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/05/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
Nanomaterials have been the focus of intensive development and research in the medical and industrial sectors over the past several decades. Some studies have found that these compounds can have a detrimental impact on living organisms, including their cellular components. Despite the obvious advantages of using nanomaterials in a wide range of applications, there is sometimes skepticism caused by the lack of substantial proof that evaluates potential toxicities. The interactions of nanoparticles (NPs) with cells of the immune system and their biomolecule pathways are an area of interest for researchers. It is possible to modify NPs so that they are not recognized by the immune system or so that they suppress or stimulate the immune system in a targeted manner. In this review, we look at the literature on nanomaterials for immunostimulation and immunosuppression and their impact on how changing the physicochemical features of the particles could alter their interactions with immune cells for the better or for the worse (immunotoxicity). We also look into whether the NPs have a unique or unexpected (but desired) effect on the immune system, and whether the surface grafting of polymers or surface coatings makes stealth nanomaterials that the immune system cannot find and get rid of.
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Affiliation(s)
- Alaa A. Aljabali
- Faculty of Pharmacy, Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University, P.O. Box 566, Irbid 21163, Jordan
- Correspondence: (A.A.A.); (M.M.T.)
| | - Mohammad A. Obeid
- Faculty of Pharmacy, Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University, P.O. Box 566, Irbid 21163, Jordan
| | - Rasha M. Bashatwah
- Faculty of Pharmacy, Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University, P.O. Box 566, Irbid 21163, Jordan
| | - Ángel Serrano-Aroca
- Biomaterials and Bioengineering Lab., Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia, San Vicente Mártir, 46001 Valencia, Spain
| | - Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Yachana Mishra
- Department of Zoology, School of Bioengineering and Bioscience, Lovely Professional University, Phagwara 144411, Punjab, India
| | - Mohamed El-Tanani
- Pharmacological and Diagnostic Research Centre, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman 19328, Jordan
| | - Altijana Hromić-Jahjefendić
- Department of Genetics and Bioengineering, Faculty of Engineering and Natural Sciences, International University of Sarajevo, Hrasnicka Cesta 15, 71000 Sarajevo, Bosnia and Herzegovina
| | - Deepak N. Kapoor
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan 173229, Himachal Pradesh, India
| | - Rohit Goyal
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan 173229, Himachal Pradesh, India
| | - Gowhar A. Naikoo
- Department of Mathematics and Sciences, College of Arts and Applied Sciences, Dhofar University, Salalah PC 211, Oman
| | - Murtaza M. Tambuwala
- Lincoln Medical School, University of Lincoln, Brayford Pool Campus, Lincoln LN6 7TS, UK
- Correspondence: (A.A.A.); (M.M.T.)
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22
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Suvieri C, Volpi C. Analysis of Differential TLR Activation in a Mouse Model of Multiple Sclerosis. Methods Mol Biol 2023; 2700:229-247. [PMID: 37603185 DOI: 10.1007/978-1-0716-3366-3_14] [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] [Indexed: 08/22/2023]
Abstract
Multiple sclerosis (MS) is a neurodegenerative and autoimmune disease affecting the central nervous system (CNS). The precise etiology of MS is still undeciphered, and signs and symptoms of the disease are varied and complex, ranging from axonal degeneration, synaptic, and neuronal loss to demyelination. Inflammation plays a critical role in determining the onset and the progression of MS, but there is still a lot of information missing before scientists come to understand what are the factors that contribute to the establishment of the neuroinflammation. Thus, various murine models, each representative of a specific hallmark of MS, are used to study the processes underlying the pathogenetic mechanisms of the disease in an attempt to find effective drugs for its treatment. Among the many causes of MS, viral infections appear to be one of the most prominent ones. In this scenario, the comprehension of the role of receptors activated upon the recognition of viral, and in general microbial, components in determining onset and progression of the neuroinflammation is of paramount importance. Toll-like receptors (TLRs) are evolutionarily conserved receptors that recognize several pathogen-associated molecular patterns (PAMPs), common structures of the pathogens, or the damage caused by the pathogens within the host. TLRs are thus directly involved in the regulation of inflammatory reactions and in the activation of the innate and, subsequently, the adaptive immune responses crucial for the elimination of infectious pathogens. The role of TLR activation in the development of MS is widely studied in various murine models of MS, as well as in MS patients. In this chapter, we will summarize the current knowledge about the contribution of TLRs to the development or progression of MS, and we will illustrate different methods commonly used for the investigation of the role of different TLRs in various murine models of the disease.
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Affiliation(s)
- Chiara Suvieri
- Section of Pharmacology, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Claudia Volpi
- Section of Pharmacology, Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
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23
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Miyauchi E, Shimokawa C, Steimle A, Desai MS, Ohno H. The impact of the gut microbiome on extra-intestinal autoimmune diseases. Nat Rev Immunol 2023; 23:9-23. [PMID: 35534624 DOI: 10.1038/s41577-022-00727-y] [Citation(s) in RCA: 118] [Impact Index Per Article: 118.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2022] [Indexed: 02/08/2023]
Abstract
The prevalence of autoimmune diseases (ADs) worldwide has rapidly increased over the past few decades. Thus, in addition to the classical risk factors for ADs, such as genetic polymorphisms, infections and smoking, environmental triggers have been considered. Recent sequencing-based approaches have revealed that patients with extra-intestinal ADs, such as multiple sclerosis, rheumatoid arthritis, type 1 diabetes and systemic lupus erythematosus, have distinct gut microbiota compositions compared to healthy controls. Faecal microbiota transplantation or inoculation with specific microbes in animal models of ADs support the hypothesis that alterations of gut microbiota influence autoimmune responses and disease outcome. Here, we describe the compositional and functional changes in the gut microbiota in patients with extra-intestinal AD and discuss how the gut microbiota affects immunity. Moreover, we examine how the gut microbiota might be modulated in patients with ADs as a potential preventive or therapeutic approach.
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Affiliation(s)
- Eiji Miyauchi
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Institute for Molecular and Cellular Regulation, Gunma University, Haebashi, Gunma, Japan
| | - Chikako Shimokawa
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
- Department of Parasitology, National Institute of Infectious Disease, Tokyo, Japan
| | - Alex Steimle
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Mahesh S Desai
- Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg.
- Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark.
| | - Hiroshi Ohno
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan.
- Immunobiology Laboratory, Graduate School of Medical Life Science, Yokohama City University, Yokohama, Kanagawa, Japan.
- Laboratory for Immune Regulation, Graduate School of Medicine, Chiba University, Chiba, Chiba, Japan.
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24
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Chen C, Zhou Y, Ning X, Li S, Xue D, Wei C, Zhu Z, Sheng L, Lu B, Li Y, Ye X, Fu Y, Bai C, Cai W, Ding Y, Lin S, Yan G, Huang Y, Yin W. Directly targeting ASC by lonidamine alleviates inflammasome-driven diseases. J Neuroinflammation 2022; 19:315. [PMID: 36577999 PMCID: PMC9798610 DOI: 10.1186/s12974-022-02682-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Dysregulated activation of the inflammasome is involved in various human diseases including acute cerebral ischemia, multiple sclerosis and sepsis. Though many inflammasome inhibitors targeting NOD-like receptor protein 3 (NLRP3) have been designed and developed, none of the inhibitors are clinically available. Growing evidence suggests that targeting apoptosis-associated speck-like protein containing a CARD (ASC), the oligomerization of which is the key event for the assembly of inflammasome, may be another promising therapeutic strategy. Lonidamine (LND), a small-molecule inhibitor of glycolysis used as an antineoplastic drug, has been evidenced to have anti-inflammation effects. However, its anti-inflammatory mechanism is still largely unknown. METHODS Middle cerebral artery occlusion (MCAO), experimental autoimmune encephalomyelitis (EAE) and LPS-induced sepsis mice models were constructed to investigate the therapeutic and anti-inflammasome effects of LND. The inhibition of inflammasome activation and ASC oligomerization by LND was evaluated using western blot (WB), immunofluorescence (IF), quantitative polymerase chain reaction (qPCR) and enzyme-linked immunosorbent assay (ELISA) in murine bone marrow-derived macrophages (BMDMs). Direct binding of LND with ASC was assessed using molecular mock docking, surface plasmon resonance (SPR), and drug affinity responsive target stability (DARTS). RESULTS Here, we find that LND strongly attenuates the inflammatory injury in experimental models of inflammasome-associated diseases including autoimmune disease-multiple sclerosis (MS), ischemic stroke and sepsis. Moreover, LND blocks diverse types of inflammasome activation independent of its known targets including hexokinase 2 (HK2). We further reveal that LND directly binds to the inflammasome ligand ASC and inhibits its oligomerization. CONCLUSIONS Taken together, our results identify LND as a broad-spectrum inflammasome inhibitor by directly targeting ASC, providing a novel candidate drug for the treatment of inflammasome-driven diseases in clinic.
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Affiliation(s)
- Chen Chen
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - YuWei Zhou
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - XinPeng Ning
- grid.12981.330000 0001 2360 039XDepartment of Molecular Biology and Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - ShengLong Li
- grid.12981.330000 0001 2360 039XDepartment of Molecular Biology and Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - DongDong Xue
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - CaiLv Wei
- grid.12981.330000 0001 2360 039XDepartment of Molecular Biology and Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - Zhu Zhu
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - LongXiang Sheng
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - BingZheng Lu
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - Yuan Li
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - XiaoYuan Ye
- grid.12981.330000 0001 2360 039XState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
| | - YunZhao Fu
- grid.12981.330000 0001 2360 039XState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060 China
| | - Chuan Bai
- grid.12981.330000 0001 2360 039XInstitute of Human Virology, Key Laboratory of Tropical Disease Control of Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - Wei Cai
- grid.12981.330000 0001 2360 039XDepartment of Molecular Biology and Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - YuXuan Ding
- grid.12981.330000 0001 2360 039XDepartment of Molecular Biology and Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - SuiZhen Lin
- Guangzhou Cellprotek Pharmaceutical Co., Ltd., Guangzhou, 510663 China
| | - GuangMei Yan
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - YiJun Huang
- grid.12981.330000 0001 2360 039XDepartment of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
| | - Wei Yin
- grid.12981.330000 0001 2360 039XDepartment of Molecular Biology and Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080 China
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25
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Liu C, Zhu J, Mi Y, Jin T. Impact of disease-modifying therapy on dendritic cells and exploring their immunotherapeutic potential in multiple sclerosis. J Neuroinflammation 2022; 19:298. [PMID: 36510261 PMCID: PMC9743681 DOI: 10.1186/s12974-022-02663-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 12/01/2022] [Indexed: 12/14/2022] Open
Abstract
Dendritic cells (DCs) are the most potent professional antigen-presenting cells (APCs), which play a pivotal role in inducing either inflammatory or tolerogenic response based on their subtypes and environmental signals. Emerging evidence indicates that DCs are critical for initiation and progression of autoimmune diseases, including multiple sclerosis (MS). Current disease-modifying therapies (DMT) for MS can significantly affect DCs' functions. However, the study on the impact of DMT on DCs is rare, unlike T and B lymphocytes that are the most commonly discussed targets of these therapies. Induction of tolerogenic DCs (tolDCs) with powerful therapeutic potential has been well-established to combat autoimmune responses in laboratory models and early clinical trials. In contrast to in vitro tolDC induction, in vivo elicitation by specifically targeting multiple cell-surface receptors has shown greater promise with more advantages. Here, we summarize the role of DCs in governing immune tolerance and in the process of initiating and perpetuating MS as well as the effects of current DMT drugs on DCs. We then highlight the most promising cell-surface receptors expressed on DCs currently being explored as the viable pharmacological targets through antigen delivery to generate tolDCs in vivo.
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Affiliation(s)
- Caiyun Liu
- grid.430605.40000 0004 1758 4110Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Jie Zhu
- grid.430605.40000 0004 1758 4110Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China ,grid.24381.3c0000 0000 9241 5705Department of Neurobiology, Care Sciences & Society, Division of Neurogeriatrcs, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Yan Mi
- grid.430605.40000 0004 1758 4110Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Tao Jin
- grid.430605.40000 0004 1758 4110Neuroscience Center, Department of Neurology, The First Hospital of Jilin University, Changchun, China
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26
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Kwilasz AJ, Clements MA, Larson TA, Harris KM, Litwiler ST, Woodall BJ, Todd LS, Schrama AEW, Mitten EH, Maier SF, Van Dam AM, Rice KC, Watkins LR. Involvement of TLR2-TLR4, NLRP3, and IL-17 in pain induced by a novel Sprague-Dawley rat model of experimental autoimmune encephalomyelitis. FRONTIERS IN PAIN RESEARCH 2022; 3:932530. [PMID: 36176709 PMCID: PMC9513159 DOI: 10.3389/fpain.2022.932530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/10/2022] [Indexed: 11/13/2022] Open
Abstract
Up to 92% of patients suffering from multiple sclerosis (MS) experience pain, most without adequate treatment, and many report pain long before motor symptoms associated with MS diagnosis. In the most commonly studied rodent model of MS, experimental autoimmune encephalomyelitis (EAE), motor impairments/disabilities caused by EAE can interfere with pain testing. In this study, we characterize a novel low-dose myelin-oligodendrocyte-glycoprotein (MOG)-induced Sprague-Dawley (SD) model of EAE-related pain in male rats, optimized to minimize motor impairments/disabilities. Adult male SD rats were treated with increasing doses of intradermal myelin-oligodendrocyte-glycoprotein (MOG1-125) (0, 4, 8, and 16 μg) in incomplete Freund's adjuvant (IFA) vehicle to induce mild EAE. Von Frey testing and motor assessments were conducted prior to EAE induction and then weekly thereafter to assess EAE-induced pain and motor impairment. Results from these studies demonstrated that doses of 8 and 16 μg MOG1-125 were sufficient to produce stable mechanical allodynia for up to 1 month in the absence of hindpaw motor impairments/disabilities. In the follow-up studies, these doses of MOG1-125, were administered to create allodynia in the absence of confounded motor impairments. Then, 2 weeks later, rats began daily subcutaneous injections of the Toll-like receptor 2 and 4 (TLR2-TLR4) antagonist (+)-naltrexone [(+)-NTX] or saline for an additional 13 days. We found that (+)-NTX also reverses EAE-induced mechanical allodynia in the MOG-induced SD rat model of EAE, supporting parallels between models, but now allowing a protracted timecourse to be examined completely free of motor confounds. Exploring further mechanisms, we demonstrated that both spinal NOD-like receptor protein 3 (NLRP3) and interleukin-17 (IL-17) are necessary for EAE-induced pain, as intrathecal injections of NLRP3 antagonist MCC950 and IL-17 neutralizing antibody both acutely reversed EAE-induced pain. Finally, we show that spinal glial immunoreactivity induced by EAE is reversed by (+)-NTX, and that spinal demyelination correlates with the severity of motor impairments/disabilities. These findings characterize an optimized MOG-induced SD rat model of EAE for the study of pain with minimal motor impairments/disabilities. Finally, these studies support the role of TLR2-TLR4 antagonists as a potential treatment for MS-related pain and other pain and inflammatory-related disorders.
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Affiliation(s)
- Andrew J. Kwilasz
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Madison A. Clements
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Tracey A. Larson
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Kevin M. Harris
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Scott T. Litwiler
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Brodie J. Woodall
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Laurel S. Todd
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Anouk E. W. Schrama
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Eric H. Mitten
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Steven F. Maier
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
| | - Anne-Marie Van Dam
- Department of Anatomy and Neuroscience, Amsterdam UMC, Vrije Universiteit, Amsterdam, Netherlands
| | - Kenner C. Rice
- Drug Design and Synthesis Section, National Institute on Drug Abuse and National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - Linda R. Watkins
- Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, United States
- The Center for Neuroscience, University of Colorado, Boulder, CO, United States
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27
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Hu B, Wang H, Xiao F. E74 Like ETS Transcription Factor 3 is a Negative Regulator of Pathogenic Lamina Propria T Helper 17.1 Cells in Murine Colitis. Immunol Invest 2022; 51:1950-1964. [PMID: 35696273 DOI: 10.1080/08820139.2022.2084409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Interleukin-17A (IL-17A)-expressing T cells, including T helper 17 (Th17) and T helper 17.1 (Th17.1) cells, play a significant role in inflammatory bowel diseases (IBDs). Identifying the mechanisms underlying the heterogeneity and plasticity of IL-17A-expressing T cells is crucial for understanding and controlling their pathogenicity. The role of E74 like ETS transcription factor 3 (ELF3) in regulating the pathogenicity of IL-17A-expressing T cells has not been studied before. Dextran sulfate sodium was used to induce acute colitis in transgenic mice co-expressing IL-17A and enhanced green fluorescent protein (EGFP). IL-17A-expressing T cells were analyzed by flow cytometry. ELF3 expression was evaluated by reverse transcription and quantitative polymerase chain reaction. Lentivirus-mediated ELF3 overexpression was performed to assess the effect of ELF3 on Th17 and Th17.1 cells in vitro. The in vivo effect of ELF3 on Th17.1 cells was analyzed in an adoptive transfer colitis model. ELF3 was expressed by IL-17A-expressing T cells in the colonic lamina propria after colitis induction. Th17 cells and Th17.1 cells were distinguished based on the expression of C-X-C motif chemokine receptor 3, cytokine production, and key regulators. Th17 cells expressed higher ELF3 than Th17.1 cells. Ectopic ELF3 overexpression did not alter Th17 cell function while suppressing Th17.1 cell function in vitro. When adoptively transferred into Rag1 knockout mice to induce colitis, ELF3-overexpressing Th17.1 cells were less pathogenic than the control Th17.1 cells. ELF3 suppresses the pathogenicity of Th17.1 cells in colitis.
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Affiliation(s)
- Bo Hu
- Department of gastrointestinal surgery, Wuhan Fourth Hospital, Wuhan, Hubei, China
| | - Hao Wang
- Department of gastrointestinal surgery, Wuhan Fourth Hospital, Wuhan, Hubei, China
| | - Fei Xiao
- Department of gastrointestinal surgery, Wuhan Fourth Hospital, Wuhan, Hubei, China
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28
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One Molecule for Mental Nourishment and More: Glucose Transporter Type 1—Biology and Deficiency Syndrome. Biomedicines 2022; 10:biomedicines10061249. [PMID: 35740271 PMCID: PMC9219734 DOI: 10.3390/biomedicines10061249] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/17/2022] [Accepted: 05/23/2022] [Indexed: 01/27/2023] Open
Abstract
Glucose transporter type 1 (Glut1) is the main transporter involved in the cellular uptake of glucose into many tissues, and is highly expressed in the brain and in erythrocytes. Glut1 deficiency syndrome is caused mainly by mutations of the SLC2A1 gene, impairing passive glucose transport across the blood–brain barrier. All age groups, from infants to adults, may be affected, with age-specific symptoms. In its classic form, the syndrome presents as an early-onset drug-resistant metabolic epileptic encephalopathy with a complex movement disorder and developmental delay. In later-onset forms, complex motor disorder predominates, with dystonia, ataxia, chorea or spasticity, often triggered by fasting. Diagnosis is confirmed by hypoglycorrhachia (below 45 mg/dL) with normal blood glucose, 18F-fluorodeoxyglucose positron emission tomography, and genetic analysis showing pathogenic SLC2A1 variants. There are also ongoing positive studies on erythrocytes’ Glut1 surface expression using flow cytometry. The standard treatment still consists of ketogenic therapies supplying ketones as alternative brain fuel. Anaplerotic substances may provide alternative energy sources. Understanding the complex interactions of Glut1 with other tissues, its signaling function for brain angiogenesis and gliosis, and the complex regulation of glucose transportation, including compensatory mechanisms in different tissues, will hopefully advance therapy. Ongoing research for future interventions is focusing on small molecules to restore Glut1, metabolic stimulation, and SLC2A1 transfer strategies. Newborn screening, early identification and treatment could minimize the neurodevelopmental disease consequences. Furthermore, understanding Glut1 relative deficiency or inhibition in inflammation, neurodegenerative disorders, and viral infections including COVID-19 and other settings could provide clues for future therapeutic approaches.
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29
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Liu J, Zhang H, Su Y, Zhang B. Application and prospect of targeting innate immune sensors in the treatment of autoimmune diseases. Cell Biosci 2022; 12:68. [PMID: 35619184 PMCID: PMC9134593 DOI: 10.1186/s13578-022-00810-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/09/2022] [Indexed: 12/22/2022] Open
Abstract
Dysregulation of auto-reactive T cells and autoantibody-producing B cells and excessive inflammation are responsible for the occurrence and development of autoimmune diseases. The suppression of autoreactive T cell activation and autoantibody production, as well as inhibition of inflammatory cytokine production have been utilized to ameliorate autoimmune disease symptoms. However, the existing treatment strategies are not sufficient to cure autoimmune diseases since patients can quickly suffer a relapse following the end of treatments. Pattern recognition receptors (PRRs), including Toll-like receptors (TLRs), Nod-like receptors (NLRs), RIG-I like receptors (RLRs), C-type lectin receptors (CLRs) and various nucleic acid sensors, are expressed in both innate and adaptive immune cells and are involved in the development of autoimmune diseases. Here, we have summarized advances of PRRs signaling pathways, association between PRRs and autoimmune diseases, application of inhibitors targeting PRRs and the corresponding signaling molecules relevant to strategies targeting autoimmune diseases. This review emphasizes the roles of different PRRs in activating both innate and adaptive immunity, which can coordinate to trigger autoimmune responses. The review may also prompt the formulation of novel ideas for developing therapeutic strategies against autoimmune diseases by targeting PRRs-related signals.
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Affiliation(s)
- Jun Liu
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China
| | - Hui Zhang
- NHC Key Laboratory of AIDS Immunology (China Medical University), National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, 110001, China
| | - Yanhong Su
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China
| | - Baojun Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China. .,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China. .,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China. .,Basic and Translational Research Laboratory of Immune Related Diseases, Xi'an, 710061, Shaanxi, China.
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30
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Zhang Q, Liu W, Wang H, Zhou H, Bulek K, Chen X, Zhang CJ, Zhao J, Zhang R, Liu C, Kang Z, Bermel RA, Dubyak G, Abbott DW, Xiao TS, Nagy LE, Li X. TH17 cells promote CNS inflammation by sensing danger signals via Mincle. Nat Commun 2022; 13:2406. [PMID: 35504893 PMCID: PMC9064974 DOI: 10.1038/s41467-022-30174-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 04/20/2022] [Indexed: 01/21/2023] Open
Abstract
The C-type lectin receptor Mincle is known for its important role in innate immune cells in recognizing pathogen and damage associated molecular patterns. Here we report a T cell-intrinsic role for Mincle in the pathogenesis of experimental autoimmune encephalomyelitis (EAE). Genomic deletion of Mincle in T cells impairs TH17, but not TH1 cell-mediated EAE, in alignment with significantly higher expression of Mincle in TH17 cells than in TH1 cells. Mechanistically, dying cells release β-glucosylceramide during inflammation, which serves as natural ligand for Mincle. Ligand engagement induces activation of the ASC-NLRP3 inflammasome, which leads to Caspase8-dependent IL-1β production and consequentially TH17 cell proliferation via an autocrine regulatory loop. Chemical inhibition of β-glucosylceramide synthesis greatly reduces inflammatory CD4+ T cells in the central nervous system and inhibits EAE progression in mice. Taken together, this study indicates that sensing of danger signals by Mincle on TH17 cells plays a critical role in promoting CNS inflammation.
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Affiliation(s)
- Quanri Zhang
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
| | - Weiwei Liu
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
| | - Han Wang
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
| | - Hao Zhou
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
- Division of Transplant Surgery, Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Katarzyna Bulek
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
- Department of Immunology, Faculty of Biochemistry, Biophysics, and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Xing Chen
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
| | - Cun-Jin Zhang
- Department of Neurology, Nanjing Drum Tower Hospital, Medical School and the State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu, China
| | - Junjie Zhao
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
| | - Renliang Zhang
- Proteomics and Metabolomics Core, Department of Research Core Services, Lerner Research Institute, Cleveland, OH, USA
| | - Caini Liu
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA
| | - Zizhen Kang
- Department of Pathology, University of Iowa, Iowa, IA, USA
| | - Robert A Bermel
- Mellen Center for Multiple Sclerosis, Cleveland Clinic, Cleveland, OH, USA
| | - George Dubyak
- Department of Physiology and Biophysics, University Hospitals Cleveland Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Derek W Abbott
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Tsan Sam Xiao
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Laura E Nagy
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA.
- Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH, United States.
- Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH, United States.
| | - Xiaoxia Li
- Department of Inflammation and Immunity, Cleveland Clinic, Lerner Research Institute, Cleveland, OH, USA.
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Duan T, Du Y, Xing C, Wang HY, Wang RF. Toll-Like Receptor Signaling and Its Role in Cell-Mediated Immunity. Front Immunol 2022. [PMID: 35309296 DOI: 10.3389/fimmu.2022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
Innate immunity is the first defense system against invading pathogens. Toll-like receptors (TLRs) are well-defined pattern recognition receptors responsible for pathogen recognition and induction of innate immune responses. Since their discovery, TLRs have revolutionized the field of immunology by filling the gap between the initial recognition of pathogens by innate immune cells and the activation of the adaptive immune response. TLRs critically link innate immunity to adaptive immunity by regulating the activation of antigen-presenting cells and key cytokines. Furthermore, recent studies also have shown that TLR signaling can directly regulate the T cell activation, growth, differentiation, development, and function under diverse physiological conditions. This review provides an overview of TLR signaling pathways and their regulators and discusses how TLR signaling, directly and indirectly, regulates cell-mediated immunity. In addition, we also discuss how TLR signaling is critically important in the host's defense against infectious diseases, autoimmune diseases, and cancer.
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Affiliation(s)
- Tianhao Duan
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Yang Du
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Changsheng Xing
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Helen Y Wang
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Department of Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Rong-Fu Wang
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Department of Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States.,Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
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32
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Ding B, Liu L, Dai Y, Li M, Xia A, Song X, Liu J, Wang X, Song Y, Zhou H. Identification and verification of differentially expressed key genes in peripheral blood-derived T cells between chronic immune thrombocytopenia patients and healthy controls. Bioengineered 2022; 13:13587-13595. [PMID: 35796625 PMCID: PMC9450975 DOI: 10.1080/21655979.2022.2080422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Immune thrombocytopenia (ITP), characterized by decreased platelet counts, is a complex immune-mediated disorder with unelucidated pathogenesis. Accumulating evidence shows that T cell-mediated platelet destruction is one crucial process during the progression of ITP. Here, we attempted to identify core genes in peripheral blood-derived T-cells of chronic ITP through the analysis of microarray data (GSE43179) and clinical verification, with the aim to further understand the pathogenesis and progression of ITP. Compared with healthy controls, 97 differentially expressed genes (DEGs), including 63 up-regulated and 34 down-regulated were identified in ITP patients. Functional enrichment analysis showed that the DEGs were mainly enriched in innate immune response, inflammatory response, and IL-17 signaling pathway. Among the DEGs, top 15 hub genes ranked by degree score were identified via protein-protein interaction (PPI) network and were further confirmed by quantitative reverse transcription PCR (qRT-PCR). Among top 15 hub genes, the expression levels of 14 DEGs like TLR4, S100A8, S100A9, and S100A12 were significantly up-regulated, while one DEG IFNG was down-regulated in ITP patients. Noticeably, TLR4 exhibited the highest degree score, and S100A8 had the largest fold change in qRT-PCR analysis. Altogether, our results suggested that the pathogenesis and progression of ITP are related with multiple immune-related pathways, and that TLR4 and S100A8 are likely to play crucial roles.
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Affiliation(s)
- Bingjie Ding
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
| | - Liu Liu
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yingtong Dai
- Department of Blood Component Preparation, Henan Province Red Cross Blood Center, Zhengzhou, Henan, China
| | - Mengjuan Li
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
| | - Ao Xia
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
| | - Xuewen Song
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
| | - Jianping Liu
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
| | - Xiaoran Wang
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
| | - Yongping Song
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
| | - Hu Zhou
- Department of Hematology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Hemostasis and Thrombosis Diagnostic Engineering Research Center of Henan Province, Zhengzhou, Henan, China
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Duan T, Du Y, Xing C, Wang HY, Wang RF. Toll-Like Receptor Signaling and Its Role in Cell-Mediated Immunity. Front Immunol 2022; 13:812774. [PMID: 35309296 PMCID: PMC8927970 DOI: 10.3389/fimmu.2022.812774] [Citation(s) in RCA: 185] [Impact Index Per Article: 92.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/08/2022] [Indexed: 12/13/2022] Open
Abstract
Innate immunity is the first defense system against invading pathogens. Toll-like receptors (TLRs) are well-defined pattern recognition receptors responsible for pathogen recognition and induction of innate immune responses. Since their discovery, TLRs have revolutionized the field of immunology by filling the gap between the initial recognition of pathogens by innate immune cells and the activation of the adaptive immune response. TLRs critically link innate immunity to adaptive immunity by regulating the activation of antigen-presenting cells and key cytokines. Furthermore, recent studies also have shown that TLR signaling can directly regulate the T cell activation, growth, differentiation, development, and function under diverse physiological conditions. This review provides an overview of TLR signaling pathways and their regulators and discusses how TLR signaling, directly and indirectly, regulates cell-mediated immunity. In addition, we also discuss how TLR signaling is critically important in the host's defense against infectious diseases, autoimmune diseases, and cancer.
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Affiliation(s)
- Tianhao Duan
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Yang Du
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Changsheng Xing
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Helen Y. Wang
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
- Department of Pediatrics, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Rong-Fu Wang
- Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
- Department of Pediatrics, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
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Abstract
Autoimmune disease is known to be caused by unregulated self-antigen-specific T cells, causing tissue damage. Although antigen specificity is an important mechanism of the adaptive immune system, antigen non-related T cells have been found in the inflamed tissues in various conditions. Bystander T cell activation refers to the activation of T cells without antigen recognition. During an immune response to a pathogen, bystander activation of self-reactive T cells via inflammatory mediators such as cytokines can trigger autoimmune diseases. Other antigen-specific T cells can also be bystander-activated to induce innate immune response resulting in autoimmune disease pathogenesis along with self-antigen-specific T cells. In this review, we summarize previous studies investigating bystander activation of various T cell types (NKT, γδ T cells, MAIT cells, conventional CD4+, and CD8+ T cells) and discuss the role of innate-like T cell response in autoimmune diseases. In addition, we also review previous findings of bystander T cell function in infection and cancer. A better understanding of bystander-activated T cells versus antigen-stimulated T cells provides a novel insight to control autoimmune disease pathogenesis.
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Affiliation(s)
- Chae-Hyeon Shim
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Sookyung Cho
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Young-Mi Shin
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Je-Min Choi
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul 04763, Korea
- Research Institute for Natural Sciences, Institute for Rheumatology Research, Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Korea
- Hanyang Institute of Bioscience and Biotechnology, Hanyang University, Seoul 04763, Korea
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35
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Xu M, Li N, Fan X, Zhou Y, Bi S, Shen A, Wang B. Differential Effects of Toll-Like Receptor Signaling on the Activation of Immune Responses in the Upper Respiratory Tract. Microbiol Spectr 2022; 10:e0114421. [PMID: 35196817 PMCID: PMC8865572 DOI: 10.1128/spectrum.01144-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/28/2022] [Indexed: 11/20/2022] Open
Abstract
Vaccination through the upper respiratory tract (URT) is highly effective for the prevention of respiratory infectious diseases. Toll-like receptor (TLR)-based adjuvants are immunostimulatory and considered potential adjuvant candidates. However, the patterns of immune response to different TLRs at the URT have not been revealed. In this study, SPF mice were preexposed to TLR agonists intranasally to simulate the status of humans. Inflammatory response to TLR agonists and TLR signal-mediated adaptive immune responses were analyzed. The results revealed that similar to human tonsils, inflammatory response to stimulation with TLR4 or TLR2 agonist was attenuated in agonist-exposed mice but not in mice without this exposure. In contrast, TLR9 or TLR3 agonist preexposure did not affect the inflammatory response to restimulation by matching agonists. For the adaptive immune response, after agonist preexposure the antibody response to antigens adjuvanted with TLR4 or TLR2 agonist was substantially restricted, whereas, both antibody and T cell responses to antigens adjuvanted with TLR9 or TLR3 agonist were activated as robustly as in mice without agonist exposure. Moreover, we demonstrate that the mechanisms underlying the differential activation of TLRs are regulated at the level of TLR expression in innate and adaptive immune cells. These results indicate that TLRs on the cell surface (TLR4 and 2) and in the endolysosomal compartments (TLR9 and 3) display distinct immune response patterns. The findings provide important information for the use of TLR agonists as mucosal adjuvants and enhance our understanding of immune responses to bacterial and viral infections in the respiratory mucosa. IMPORTANCE Agonists of TLRs are potential adjuvant candidates for mucosal vaccination. We demonstrated that the TLR-mediated inflammatory and antibody responses in the URT of SPF mice exposed to extracellular TLR agonists were substantially restricted. In contrast, inflammatory and adaptive immune responses, including B and T cell activation, were not desensitized in mice exposed to intracellular TLR agonists. The distinct responsive patterns of extra and intracellular TLRs regulated at TLR expression in immune cells. The results indicated that TLRs differentially impact the innate and adaptive immune response in the URT, which contributes to the selection of TLR-based mucosal adjuvants and helps understand the difference between the immune response in bacterial and viral infections.
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Affiliation(s)
- Meiyi Xu
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Ning Li
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Xin Fan
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Ya Zhou
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Shuai Bi
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Adong Shen
- Beijing Pediatric Research Institute, Beijing Children's Hospital, National Center for Children's Health, Beijing, China
| | - Beinan Wang
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
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36
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Li X, Zhu Z, Xia Z, Xu B. FGF15 Protects Septic Mice by Inhibiting Inflammation and Modulating Treg Responses. J Inflamm Res 2022; 15:6187-6197. [PMID: 36386580 PMCID: PMC9653038 DOI: 10.2147/jir.s387613] [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: 08/26/2022] [Accepted: 11/01/2022] [Indexed: 11/09/2022] Open
Abstract
Background Fibroblast growth factor 15 (FGF15) through its FGF-receptor (FGFR)-4 inhibits hepatic inflammation. The current study aimed at investigating whether FGF15 could inhibit septic inflammation and its compensative regulatory T cell (Treg) responses in a mouse sepsis model of cecal ligation and puncture (CLP) and in vitro transwell co-culture. Methods Following the sham or CLP procedure, male CLP C57BL/6 mice were intravenously injected with vehicle saline or FGF15 beginning at 2 h post the procedure every 12 h for three days. Some mice were euthanized and their serum and liver samples were collected for examination of cytokines and Tregs by enzyme-linked immunosorbent assay (ELISA), Western blot and flow cytometry. The remaining mice were monitored for their survival up to 14 days post procedure. Moreover, the purified hepatic CD4+ T cells were co-cultured in transwell plates with unmanipulated NCTC 1469 cells or the cells that had been transfected with the control or FGFR4-specific siRNA and treated with, or without, Lipopolysaccharides (LPS) for 24 h, followed by treatment with vehicle PBS or FGF15 for 48 h. Results Compared with the CLP group of mice, treatment with FGF15 significantly prolonged the mean survival days of mice (12 vs 1.17 in the CLP group, P = 0.022), mitigated hepatic inflammation and reduced the frequency of apoptotic cells in the liver of mice. FGF15 treatment decreased the percentages of hepatic Tregs, hepatic IL-2, TGF-β and FOXP3 expression in septic mice, accompanied by decreasing serum IL-1β, TNF-α, IL-6 and IL-10 levels. Similarly, FGF15 treatment also attenuated the LPS-increased frequency of Tregs, FOXP3 and IL-2 expression and IL-1β, TNF-α, IL-6 and IL-10 secretion in vitro after co-culture with NCTC 1469 cells, but not co-cultured FGFR4-silenced NCTC 1649 cells. Conclusion FGF15 treatment through FGFR4 ameliorated hepatic inflammation and its compensative Treg responses, which were associated with protecting from septic death in mice.
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Affiliation(s)
- Xing Li
- Department of Anesthesiology, The First School of Clinical Medicine, Southern Medical University, Guangzhou, People’s Republic of China
- Department of Anesthesiology, General Hospital of the Southern Theater Command of the Chinese PLA, Guangzhou, People’s Republic of China
- Department of Critical Care, Changsha of Traditional Chinese Medicine Hospital, Changsha, People’s Republic of China
| | - Zexiang Zhu
- Department of Critical Care, Changsha of Traditional Chinese Medicine Hospital, Changsha, People’s Republic of China
| | - Zhenkun Xia
- Department of Thoracic Surgery, The Second Xiangya Hospital of Central South University, Changsha, People’s Republic of China
| | - Bo Xu
- Department of Anesthesiology, The First School of Clinical Medicine, Southern Medical University, Guangzhou, People’s Republic of China
- Department of Anesthesiology, General Hospital of the Southern Theater Command of the Chinese PLA, Guangzhou, People’s Republic of China
- Correspondence: Bo Xu, Tel +86-18907132861, Email
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Pérez-Pérez S, Domínguez-Mozo MI, García-Martínez MÁ, García-Frontini MC, Villarrubia N, Costa-Frossard L, Villar LM, Arroyo R, Álvarez-Lafuente R. Anti-Human Herpesvirus 6 A/B Antibodies Titers Correlate With Multiple Sclerosis-Associated Retrovirus Envelope Expression. Front Immunol 2021; 12:798003. [PMID: 34912348 PMCID: PMC8666430 DOI: 10.3389/fimmu.2021.798003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/11/2021] [Indexed: 12/23/2022] Open
Abstract
Human endogenous retrovirus W family envelope proteins (pHERV-W ENV/syncytin-1) have been repeatedly associated with multiple sclerosis (MS). Here, we have focused on the study of pHERV-W ENV/syncytin-1 expression levels in MS patients (relapsing and progressive forms) and in healthy donors (HD) and on exploring their possible relationship with Epstein-Barr virus (EBV) and human herpesvirus-6A/B (HHV-6A/B). We included blood samples from 101 MS patients and 37 HD to analyze antiviral antibody titers by ELISA and pHERV-W ENV/syncytin-1 expression levels by flow cytometry as well as by qPCR. Patients with relapsing MS forms showed significantly higher pHERV-W ENV/syncytin-1 protein and gene expression levels than HD. Progressive MS patients also showed significantly higher protein and gene expression levels than both HD and relapsing MS patients. Regarding antiviral antibodies titers, anti-HHV-6A/B IgM levels were positively correlated with pHERV-W ENV/syncytin-1 protein expression levels in patients with relapsing MS, while in the progressive forms patients this correlation was found with anti-HHVA/B IgG levels. Therefore, pHERV-W ENV could be involved in MS pathogenesis, playing a role in relapsing and progressive forms. Besides, anti-HHV-6A/B antibodies positively correlated with pHERV-W ENV expression. Further studies are needed to better understand this possible relationship.
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Affiliation(s)
- Silvia Pérez-Pérez
- Environmental Factors in Degenerative Diseases Research Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - María I. Domínguez-Mozo
- Environmental Factors in Degenerative Diseases Research Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - M. Ángel García-Martínez
- Environmental Factors in Degenerative Diseases Research Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - M. Celeste García-Frontini
- Environmental Factors in Degenerative Diseases Research Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Noelia Villarrubia
- Immunology Department, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | | | - Luisa M. Villar
- Immunology Department, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - Rafael Arroyo
- Neurology Department, Hospital Universitario Quironsalud Madrid, Madrid, Spain
| | - Roberto Álvarez-Lafuente
- Environmental Factors in Degenerative Diseases Research Group, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
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38
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Li H, Liu S, Han J, Li S, Gao X, Wang M, Zhu J, Jin T. Role of Toll-Like Receptors in Neuroimmune Diseases: Therapeutic Targets and Problems. Front Immunol 2021; 12:777606. [PMID: 34790205 PMCID: PMC8591135 DOI: 10.3389/fimmu.2021.777606] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 10/15/2021] [Indexed: 12/16/2022] Open
Abstract
Toll-like receptors (TLRs) are a class of proteins playing a key role in innate and adaptive immune responses. TLRs are involved in the development and progression of neuroimmune diseases via initiating inflammatory responses. Thus, targeting TLRs signaling pathway may be considered as a potential therapy for neuroimmune diseases. However, the role of TLRs is elusive and complex in neuroimmune diseases. In addition to the inadequate immune response of TLRs inhibitors in the experiments, the recent studies also demonstrated that partial activation of TLRs is conducive to the production of anti-inflammatory factors and nervous system repair. Exploring the mechanism of TLRs in neuroimmune diseases and combining with developing the emerging drug may conquer neuroimmune diseases in the future. Herein, we provide an overview of the role of TLRs in several neuroimmune diseases, including multiple sclerosis, neuromyelitis optica spectrum disorder, Guillain-Barré syndrome and myasthenia gravis. Emerging difficulties and potential solutions in clinical application of TLRs inhibitors will also be discussed.
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Affiliation(s)
- Haixia Li
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Shan Liu
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Jinming Han
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China.,Department of Clinical Neuroscience, Karolinska Institutet, Solna, Sweden
| | - Shengxian Li
- Department of Urology, The First Hospital of Jilin University, Changchun, China
| | - Xiaoyan Gao
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Meng Wang
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
| | - Jie Zhu
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China.,Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Karolinska University Hospital, Solna, Sweden
| | - Tao Jin
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, China
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39
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Bayan N, Yazdanpanah N, Rezaei N. Role of Toll-Like Receptor 4 in Diabetic Retinopathy. Pharmacol Res 2021; 175:105960. [PMID: 34718133 DOI: 10.1016/j.phrs.2021.105960] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/23/2021] [Accepted: 10/23/2021] [Indexed: 12/11/2022]
Abstract
Diabetic retinopathy (DR) is the most frequent microvascular complication of diabetes mellitus (DM) and a leading cause of blindness worldwide. Evidence has shown that DR is an inflammatory disease with hyperglycemia playing a causative role in the development of its main features, including inflammation, cellular apoptosis, neurodegeneration, oxidative stress, and neovascularization. Toll-like receptors (TLRs) are a well-known family of pattern recognition receptors (PRRs) responsible for the initiation of inflammatory and immune responses. TLR4 identifies both endogenous and exogenous ligands and is associated with various physiological and pathological pathways in the body. While the detailed pathophysiology of DR is still unclear, increasing data suggests a crucial role for TLR4 in the development of DR. Due to hyperglycemia, TLR4 expression increases in diabetic retina, which activates various pathways leading to DR. Considering the role of TLR4 in DR, several studies have focused on the association of TLR4 polymorphisms and risk of DR development. Moreover, evidence concerning the effect of microRNAs in the pathogenesis of DR, through their interaction with TLR4, indicates the determinant role of TLR4 in this disease. Of note, several agents have proven as effective in alleviating DR through the inhibition of the TLR4 pathway, suggesting new avenues in DR treatment. In this review, we provided a brief overview of the TLR4 structure and biological function and a more comprehensive discussion about the mechanisms of TLR4 activation in DR. Furthermore, we summarized the relationship between TLR4 polymorphisms and risk of DR and the relationship between microRNAs and TLR4 in DR. Finally, we discussed the current progress in designing TLR4 inhibitors, which could be helpful in DR clinical management.
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Affiliation(s)
- Nikoo Bayan
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Niloufar Yazdanpanah
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran; Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran; Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran; Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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40
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Yao YE, Qin CC, Yang CM, Huang TX. γδT17/γδTreg cell subsets: a new paradigm for asthma treatment. J Asthma 2021; 59:2028-2038. [PMID: 34634976 DOI: 10.1080/02770903.2021.1980585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bronchial asthma (abbreviated as asthma), is a heterogeneous disease characterized by chronic airway inflammation and airway hyperresponsiveness. The main characteristics of asthma include variable reversible airflow limitation and airway remodeling. The pathogenesis of asthma is still unclear. Th1/Th2 imbalance, Th1 deficiency and Th2 hyperfunction are classic pathophysiological mechanisms of asthma. Some studies have shown that the imbalance of the Th1/Th2 cellular immune model and Th17/Treg imbalance play a key role in the occurrence and development of asthma; however, these imbalances do not fully explain the disease. In recent years, studies have shown that γδT and γδT17 cells are involved in the pathogenesis of asthma. γδTreg has a potential immunosuppressive function, but its regulatory mechanisms have not been fully elucidated. In this paper, we reviewed the role of γδT17/γδTreg cells in bronchial asthma, including the mechanisms of their development and activation. Here we propose that γδT17/Treg cell subsets contribute to the occurrence and development of asthma, constituting a novel potential target for asthma treatment.
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Affiliation(s)
- Yi-En Yao
- Department of Respiratory Medicine, The Fifth Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Cai-Cheng Qin
- Department of Respiratory Medicine, The Fifth Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Chao-Mian Yang
- Department of Respiratory Medicine, The Fifth Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Tian-Xia Huang
- Department of Respiratory Medicine, The Fifth Affiliated Hospital of Guangxi Medical University, Nanning, China
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41
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Puck A, Künig S, Modak M, May L, Fritz P, Battin C, Radakovics K, Steinberger P, Reipert BM, Crowe BA, Stöckl J. The soluble cytoplasmic tail of CD45 regulates T-cell activation via TLR4 signaling. Eur J Immunol 2021; 51:3176-3185. [PMID: 34626426 DOI: 10.1002/eji.202149227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 08/03/2021] [Accepted: 10/06/2021] [Indexed: 11/10/2022]
Abstract
The soluble cytoplasmic tail of CD45 (ct-CD45) is a cleavage fragment of CD45, that is generated during the activation of human phagocytes. Upon release to the extracellular space, ct-CD45 binds to human T cells and inhibits their activation in vitro. Here, we studied the potential role of TLR4 as a receptor for ct-CD45. Treatment of Jurkat TLR4/CD14 reporter cells with ct-CD45 induced the upregulation of the reporter gene NFκB-eGFP and could be blocked by inhibitors of TLR4 signaling. Conversely, ct-CD45 did not promote the NFκB-controlled eGFP induction in reporter cells expressing TLR1, TLR2, and TLR6 transgenes and did not lead to the activation of the transcription factors NFκB, AP-1, and NFAT in a Jurkat reporter cell line expressing endogenous TLR5. Moreover, ct-CD45 binds to recombinant TLR4 in an in vitro assay and this association was reduced in the presence of oxidized 1-palmitoyl-2-arachidonyl-sn-glycero-3-phosphorylcholine. Blockade of TLR4 with mAb HTA125 partially reversed the ct-CD45-mediated inhibition of T-cell proliferation. Interestingly, targeting of TLR4 with mAb W7C11 also suppressed T-cell proliferation. In summary, the results of this study demonstrate that ct-CD45 acts via a noncanonical TLR4 activation pathway on T cells, which modulates TCR signaling.
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Affiliation(s)
- Alexander Puck
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Sarojinidevi Künig
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Madhura Modak
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Lara May
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Pia Fritz
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Claire Battin
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Katharina Radakovics
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Peter Steinberger
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Birgit M Reipert
- Department of Immunology, Drug Discovery Austria, Baxalta Innovations GmbH, Vienna, Austria
| | - Brian A Crowe
- Department of Immunology, Drug Discovery Austria, Baxalta Innovations GmbH, Vienna, Austria
| | - Johannes Stöckl
- Institute of Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
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42
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Amaral-Silva D, Gonçalves R, Torrão RC, Torres R, Falcão S, Gonçalves MJ, Araújo MP, Martins MJ, Lopes C, Neto A, Marona J, Costa T, Castelão W, Silva AB, Silva I, Lourenço MH, Mateus M, Gonçalves NP, Manica S, Costa M, Pimentel-Santos FM, Mourão AF, Branco JC, Soares H. Direct tissue-sensing reprograms TLR4 + Tfh-like cells inflammatory profile in the joints of rheumatoid arthritis patients. Commun Biol 2021; 4:1135. [PMID: 34580414 PMCID: PMC8476501 DOI: 10.1038/s42003-021-02659-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 09/09/2021] [Indexed: 12/20/2022] Open
Abstract
CD4+ T cells mediate rheumatoid arthritis (RA) pathogenesis through both antibody-dependent and independent mechanisms. It remains unclear how synovial microenvironment impinges on CD4+ T cells pathogenic functions. Here, we identified a TLR4+ follicular helper T (Tfh) cell-like population present in the blood and expanded in synovial fluid. TLR4+ T cells possess a two-pronged pathogenic activity whereby direct TLR4+ engagement by endogenous ligands in the arthritic joint reprograms them from an IL-21 response, known to sponsor antibody production towards an IL-17 inflammatory program recognized to fuel tissue damage. Ex vivo, synovial fluid TLR4+ T cells produced IL-17, but not IL-21. Blocking TLR4 signaling with a specific inhibitor impaired IL-17 production in response to synovial fluid recognition. Mechanistically, we unveiled that T-cell HLA-DR regulates their TLR4 expression. TLR4+ T cells appear to uniquely reconcile an ability to promote systemic antibody production with a local synovial driven tissue damage program. In order to identify how the synovial microenvironment impinges on CD4+ T cells pathogenic functions in Rheumatoid Arthritis (RA), Amaral-Silva examined RA patient blood and synovial fluif and identified the presence of a TLR4+ follicular helper T (Tfh) cell-like population. They provided mechanistic insight into how TLR4+ T cells uniquely reconcile an ability to promote systemic antibody production with a local synovial driven-tissue damage program.
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Affiliation(s)
- Daniela Amaral-Silva
- Human Immunobiology and Pathogenesis Group, Lisboa, Portugal
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
| | - Rute Gonçalves
- Human Immunobiology and Pathogenesis Group, Lisboa, Portugal
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
| | - Rita C. Torrão
- Human Immunobiology and Pathogenesis Group, Lisboa, Portugal
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
| | - Rita Torres
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
| | - Sandra Falcão
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
| | - Maria João Gonçalves
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Maria Paula Araújo
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Maria José Martins
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Carina Lopes
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Agna Neto
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
| | - José Marona
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Tiago Costa
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Walter Castelão
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Ana Bento Silva
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Inês Silva
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Maria Helena Lourenço
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Margarida Mateus
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Nuno Pina Gonçalves
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
| | - Santiago Manica
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
| | - Manuela Costa
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
| | - Fernando M. Pimentel-Santos
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
| | - Ana Filipa Mourão
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
| | - Jaime C. Branco
- grid.414462.10000 0001 1009 677XHospital Egas Moniz, Rua da Junqueira n° 126, Lisboa, Portugal
- Rheumatological Diseases Laboratory, Lisboa, Portugal
- grid.10772.330000000121511713CHRC|CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
| | - Helena Soares
- Human Immunobiology and Pathogenesis Group, Lisboa, Portugal
- grid.10772.330000000121511713iNOVA4Health | CEDOC, NOVA Medical School | Faculdade de Ciências Médicas, NOVA University of Lisbon, Lisboa, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Lisbon Campus, Rua do Instituto Bacteriológico 5, Lisboa, Portugal
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Kim H, Zhao Q, Barreda H, Kaur G, Hai B, Choi JM, Jung SY, Liu F, Lee RH. Identification of Molecules Responsible for Therapeutic Effects of Extracellular Vesicles Produced from iPSC-Derived MSCs on Sjo¨gren's Syndrome. Aging Dis 2021; 12:1409-1422. [PMID: 34527418 PMCID: PMC8407887 DOI: 10.14336/ad.2021.0621] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/21/2021] [Indexed: 01/11/2023] Open
Abstract
Recent research indicated that extracellular vesicles (EVs) derived from mesenchymal stem/stromal cells (MSCs) are a promising alternative to MSCs for immunomodulatory therapy. However, the contents of MSC-EVs would change as their parent MSCs change, hence the therapeutic efficacy of MSC-derived EVs (MSC-EVs) would largely depend on donors, tissue sources and culture conditions of MSCs. To overcome limitations of tissue-derived MSCs, we previously used MSCs derived from human induced pluripotent stem cells (iMSCs) to produce EVs and demonstrated their therapeutic potential in a mouse model of secondary Sjo¨gren's Syndrome. Here, we further found that EVs from early-passage iMSCs had better immunomodulatory potency than EVs from late-passage iMSCs in TLR4-stimulated splenocytes and in a mouse model of primary Sjögren's syndrome. Comparative molecular profiling using proteomics and microRNA sequencing revealed distinctive molecular profiles of iMSC-EVs with or without immunomodulation capacity. Amongst them, manipulation of TGF-β1, miR-21 and miR-125b levels in iMSC-EVs significantly affected their immunosuppressive effects. These findings would help improve our understanding of the molecular mechanism underlying iMSC-EV-mediated immunomodulation and further provide strategies to improve regulatory function of EVs for the treatment of immune-mediated diseases.
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Affiliation(s)
- Hyemee Kim
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA.
| | - Qingguo Zhao
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA.
| | - Heather Barreda
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA.
| | - Gagandeep Kaur
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA.
| | - Bo Hai
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA.
| | - Jong Min Choi
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Sung Youn Jung
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Fei Liu
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA.,Correspondence should be addressed to: Dr. Fei Liu () and Dr. Ryang Hwa Lee (), Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA
| | - Ryang Hwa Lee
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA.,Correspondence should be addressed to: Dr. Fei Liu () and Dr. Ryang Hwa Lee (), Institute for Regenerative Medicine, College of Medicine, Texas A&M University, College Station, Texas 77845, USA
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GLUT1 Deficiency Syndrome-Early Treatment Maintains Cognitive Development? (Literature Review and Case Report). Genes (Basel) 2021; 12:genes12091379. [PMID: 34573360 PMCID: PMC8472230 DOI: 10.3390/genes12091379] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/22/2021] [Accepted: 08/30/2021] [Indexed: 01/13/2023] Open
Abstract
Glucose transporter type 1 (GLUT1) is the most important energy carrier of the brain across the blood-brain barrier, and a genetic defect of GLUT1 is known as GLUT1 deficiency syndrome (GLUT1DS). It is characterized by early infantile seizures, developmental delay, microcephaly, ataxia, and various paroxysmal neurological phenomena. In most cases, GLUT1DS is caused by heterozygous single-nucleotide variants (SNVs) in the SLC2A1 gene that provoke complete or severe impairment of the functionality and/or expression of GLUT1 in the brain. Despite the rarity of these diseases, GLUT1DS is of high clinical interest since a very effective therapy, the ketogenic diet, can improve or reverse symptoms, especially if it is started as early as possible. We present a clinical phenotype, biochemical analysis, electroencephalographic and neuropsychological features of an 11-month-old boy with myoclonic seizures, hypogammaglobulinemia, and mildly impaired gross motor development. Using sequence analysis and deletion/duplication testing, deletion of an entire coding sequence in the SLC2A1 gene was detected. Early introduction of a modified Atkins diet maintained a seizure-free period without antiseizure medications and normal cognitive development in the follow-up period. Our report summarizes the clinical features of GLUT1 syndromes and discusses the importance of early identification and molecular confirmation of GLUT1DS as a treatable metabolic disorder.
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45
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Marks KE, Flaherty S, Patterson KM, Stratton M, Martinez GJ, Reynolds JM. Toll-like receptor 2 induces pathogenicity in Th17 cells and reveals a role for IPCEF in regulating Th17 cell migration. Cell Rep 2021; 35:109303. [PMID: 34192530 PMCID: PMC8270556 DOI: 10.1016/j.celrep.2021.109303] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 04/02/2021] [Accepted: 06/03/2021] [Indexed: 02/07/2023] Open
Abstract
Pathogenic Th17 cells drive inflammation in autoimmune disease, yet the molecular programming underlying Th17 cell pathogenicity remains insufficiently understood. Activation of Toll-like receptor 2 (TLR2) increases Th17 cell inflammatory potential, but little is known regarding the mechanistic outcomes of TLR2 signaling in Th17 cells. Here, we demonstrate that TLR2 is comparable to IL-23 in inducing pathogenicity and increasing the migratory capacity of Th17 cells. We perform RNA sequencing of Th17 cells stimulated though the TLR2 pathway and find differential expression of several genes linked with the Th17 genetic program as well as genes not previously associated with pathogenic Th17 cells, including Ipcef1. Enforced expression of Ipcef1 in Th17 cells abolishes the TLR2-dependent increases in migratory capacity and severely impairs the ability of Th17 cells to induce experimental autoimmune encephalomyelitis. This study establishes the importance of the TLR2 signaling pathway in inducing Th17 cell pathogenicity and driving autoimmune inflammation.
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Affiliation(s)
- Kathryne E Marks
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Stephanie Flaherty
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Kristen M Patterson
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Matthew Stratton
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Gustavo J Martinez
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Joseph M Reynolds
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA; Edward Hines Jr. VA Hospital, Hines, IL, USA.
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46
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Marks KE, Cho K, Stickling C, Reynolds JM. Toll-like Receptor 2 in Autoimmune Inflammation. Immune Netw 2021; 21:e18. [PMID: 34277108 PMCID: PMC8263214 DOI: 10.4110/in.2021.21.e18] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 06/22/2021] [Indexed: 12/11/2022] Open
Abstract
TLR signaling is critical for broad scale immune recognition of pathogens and/or danger molecules. TLRs are particularly important for the activation and the maturation of cells comprising the innate immune response. In recent years it has become apparent that several different TLRs regulate the function of lymphocytes as well, albeit to a lesser degree compared to innate immunity. TLR2 heterodimerizes with either TLR1 or TLR6 to broadly recognize bacterial lipopeptides as well as several danger-associated molecular patterns. In general, TLR2 signaling promotes immune cell activation leading to tissue inflammation, which is advantageous for combating an infection. Conversely, inappropriate or dysfunctional TLR2 signaling leading to an overactive inflammatory response could be detrimental during sterile inflammation and autoimmune disease. This review will highlight and discuss recent research advances linking TLR2 engagement to autoimmune inflammation.
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Affiliation(s)
- Kathryne E Marks
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Kaylin Cho
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Courtney Stickling
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
| | - Joseph M Reynolds
- Center for Cancer Cell Biology, Immunology, and Infection, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA
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MacBeth M, Joetham A, Gelfand EW, Schedel M. Plasticity of Naturally Occurring Regulatory T Cells in Allergic Airway Disease Is Modulated by the Transcriptional Activity of Il-6. Int J Mol Sci 2021; 22:ijms22094582. [PMID: 33925531 PMCID: PMC8123826 DOI: 10.3390/ijms22094582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/26/2021] [Accepted: 04/26/2021] [Indexed: 12/27/2022] Open
Abstract
The impact of naturally occurring regulatory T cells (nTregs) on the suppression or induction of lung allergic responses in mice depends on the nuclear environment and the production of the pro-inflammatory cytokine interleukin 6 (IL-6). These activities were shown to be different in nTregs derived from wild-type (WT) and CD8-deficient mice (CD8−/−), with increased IL-6 levels in nTregs from CD8−/− mice in comparison to WT nTregs. Thus, identification of the molecular mechanisms regulating IL-6 production is critical to understanding the phenotypic plasticity of nTregs. Electrophoretic mobility shift assays (EMSA) were performed to determine transcription factor binding to four Il-6 promoter loci using nuclear extracts from nTregs of WT and CD8−/− mice. Increased transcription factor binding for each of the Il-6 loci was identified in CD8−/− compared to WT nTregs. The impact of transcription factor binding and a novel short tandem repeat (STR) on Il-6 promoter activity was analyzed by luciferase reporter assays. The Il-6 promoter regions closer to the transcription start site (TSS) were more relevant to the regulation of Il-6 depending on NF-κB, c-Fos, and SP and USF family members. Two Il-6 promoter loci were most critical for the inducibility by lipopolysaccharide (LPS) and tumor necrosis factor α (TNFα). A novel STR of variable length in the Il-6 promoter was identified with diverging prevalence in nTregs from WT or CD8−/− mice. The predominant GT repeat in CD8−/− nTregs revealed the highest luciferase activity. These novel regulatory mechanisms controlling the transcriptional regulation of the Il-6 promoter are proposed to contribute to nTregs plasticity and may be central to disease pathogenesis.
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Affiliation(s)
- Morgan MacBeth
- Division of Allergy and Immunology and Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA; (M.M.); (A.J.); (E.W.G.)
- Department of Medical Oncology, University of Colorado, Denver, CO 80206, USA
| | - Anthony Joetham
- Division of Allergy and Immunology and Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA; (M.M.); (A.J.); (E.W.G.)
| | - Erwin W. Gelfand
- Division of Allergy and Immunology and Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA; (M.M.); (A.J.); (E.W.G.)
| | - Michaela Schedel
- Division of Allergy and Immunology and Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA; (M.M.); (A.J.); (E.W.G.)
- Department of Pulmonary Medicine, University Medical Center Essen-Ruhrlandklinik, 45239 Essen, Germany
- University Hospital Essen, University Duisburg-Essen, 45147 Essen, Germany
- Correspondence: ; Tel.: +49-201-723-82545
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48
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Luo W, Chen X, Ye L, Chen X, Jia W, Zhao Y, Samorodov AV, Zhang Y, Hu X, Zhuang F, Qian J, Zheng C, Liang G, Wang Y. Kaempferol attenuates streptozotocin-induced diabetic nephropathy by downregulating TRAF6 expression: The role of TRAF6 in diabetic nephropathy. JOURNAL OF ETHNOPHARMACOLOGY 2021; 268:113553. [PMID: 33152432 DOI: 10.1016/j.jep.2020.113553] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 10/26/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kaempferia rhizome is a famous traditional herbal medical in tropical and subtropical areas. Kaempferol (KPF) is one of the main bioactive compounds in Kaempferia rhizome, with anti-oxidant/anti-inflammatory effects demonstrated in various disease models, including cancers, obesity and diabetes. AIM OF THE STUDY Inflammation plays an important role in the pathogenesis of diabetic nephropathy (DN). TRAF6 functions as a signal transducer in toll-like receptor 4 and NF-κB pro-inflammatory signaling pathway. We aimed at investigate whether KPF is able to mitigate inflammatory responses by regulating TRAF6 in DN. MATERIAL AND METHODS C57BL/6 mice were injected with streptozotocin to induce type 1 DN. NRK-52E, a tubular epithelial cell line, was used for in vitro analysis. TRAF6 was knockdown using siRNA in vitro and AAV2/2-shRNA in vivo. The anti-DN and inflammatory effects of KPF or knockdown of TRAF6 were evaluated by investigating renal filtration index, pathological changes of kidney tissue. Proinflammatory cytokine levels were detected using ELISA. NF-κB pathway and protein levels of related pathways were detected through Western blot. RESULTS KPF significantly reduced renal inflammation, fibrosis, and kidney dysfunction in diabetic mice. These effects were associated with a downregulation of TRAF6 in diabetic mouse kidneys, indicating the potential role of TRAF6. Knockdown of TRAF6 in mice through AAV2-shTRAF6 confirmed the importance of TRAF6 in DN. In vitro, treatment of KPF in NRK-52E cells attenuated high glucose (HG)-induced inflammatory and fibrogenic responses, associated with downregulated TRAF6 expression. The conclusion was further confirmed in NRK-52E cells by knocking down the expression and by overexpression of TRAF6. CONCLUSION Our findings provide direct evidence that TRAF6 mediates diabetes-induced inflammation leading to renal dysfunction. We also show that KPF is a potential therapeutic agent to reduce inflammatory responses in DN. Also, TRAF6 may represent an interesting target to combat DN.
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Affiliation(s)
- Wu Luo
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Xiaojun Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Laboratory of Pharmaceutical Analysis, Department of Pharmaceutics, Wenzhou Nursing School, Wenzhou, Zhejiang, 325000, China.
| | - Lin Ye
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Xuemei Chen
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Wenjing Jia
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Yanni Zhao
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Aleksandr V Samorodov
- Department of Pharmacology, Bashkir State Medical University, Ufa City, 450005, Russia.
| | - Yali Zhang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Xueting Hu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Fei Zhuang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Department of Endocrinology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 323000, China.
| | - Jianchang Qian
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Zhuji Biomedicine Institute, School of Pharmaceutical Sciences, Wenzhou Medical University, Zhuji, Zhejiang, 311800, China.
| | - Chao Zheng
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Department of Endocrinology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 323000, China.
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Zhuji Biomedicine Institute, School of Pharmaceutical Sciences, Wenzhou Medical University, Zhuji, Zhejiang, 311800, China.
| | - Yi Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China; Zhuji Biomedicine Institute, School of Pharmaceutical Sciences, Wenzhou Medical University, Zhuji, Zhejiang, 311800, China.
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49
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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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50
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Chou WC, Guo Z, Guo H, Chen L, Zhang G, Liang K, Xie L, Tan X, Gibson SA, Rampanelli E, Wang Y, Montgomery SA, Brickey WJ, Deng M, Freeman L, Zhang S, Su MA, Chen X, Wan YY, Ting JPY. AIM2 in regulatory T cells restrains autoimmune diseases. Nature 2021; 591:300-305. [PMID: 33505023 PMCID: PMC8080937 DOI: 10.1038/s41586-021-03231-w] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 12/14/2020] [Indexed: 11/30/2022]
Abstract
The inflammasome initiates innate defense and inflammatory response by activating caspase-1 and pyroptotic cell death in myeloid cells1,2. It is comprised of an innate immune receptor/sensor, pro-caspase-1, and a common adaptor molecule, ASC (apoptotic speck-containing protein with a CARD). Consistent with their pro-inflammatory function, caspase-1, ASC and NLRP3 exacerbate autoimmunity during experimental autoimmune encephalomyelitis (EAE) by enhancing IL-1β and IL-18 secretion in myeloid cells3–6. Here we reveal an unexpected function of a DNA-binding inflammasome receptor, AIM2 (Absent in Melanoma 2)7–10, in T regulatory cells (Tregs) to restrain two models of autoimmunity (experimental autoimmune encephalomyelitis and T cell-mediated colitis) by studying whole-body and Treg-specific Aim2–/– mice. AIM2 is highly expressed by human and mouse Tregs, with its expression induced by TGF-β and its promoter occupied by transcription factors associated with Tregs, including Runx1, Ets1, Bcl11b and CREB. RNA-seq, biochemical and metabolic analyses revealed that AIM2 attenuates Akt-phosphorylation, mTOR, c-Myc and glycolysis, but promotes lipid oxidative phosphorylation in Tregs. Mechanistically, AIM2 interacts with the RACK1/PP2A-phosphatase complex to restrain Akt-phosphorylation. Lineage tracing demonstrates that AIM2 promotes the stability of Tregs during inflammation. While AIM2 is generally accepted as an inflammasome effector in myeloid cells, this report reveals a T cell-intrinsic role of AIM2 in restraining autoimmunity by diminishing Akt-mTOR signaling and altering immune-metabolism to enhance Treg stability.
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Affiliation(s)
- Wei-Chun Chou
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Zengli Guo
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Hao Guo
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Liang Chen
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ge Zhang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kaixin Liang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Oral and Craniofacial Biomedicine Program, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ling Xie
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Xianming Tan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Sara A Gibson
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Elena Rampanelli
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yan Wang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Stephanie A Montgomery
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - W June Brickey
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Meng Deng
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Oral and Craniofacial Biomedicine Program, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Leslie Freeman
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Song Zhang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Maureen A Su
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Department of Microbiology Immunology and Medical Genetics and Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Xian Chen
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yisong Y Wan
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. .,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Jenny P-Y Ting
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. .,Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. .,Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. .,Oral and Craniofacial Biomedicine Program, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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