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Meng X, Wang L, Du YC, Cheng D, Zeng T. PPARβ/δ as a promising molecular drug target for liver diseases: A focused review. Clin Res Hepatol Gastroenterol 2024; 48:102343. [PMID: 38641250 DOI: 10.1016/j.clinre.2024.102343] [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: 12/27/2023] [Revised: 04/03/2024] [Accepted: 04/17/2024] [Indexed: 04/21/2024]
Abstract
Various liver diseases pose great threats to humans. Although the etiologies of these liver diseases are quite diverse, they share similar pathologic phenotypes and molecular mechanisms such as oxidative stress, lipid and glucose metabolism disturbance, hepatic Kupffer cell (KC) proinflammatory polarization and inflammation, insulin resistance, and hepatic stellate cell (HSC) activation and proliferation. Peroxisome proliferator-activated receptor β/δ (PPARβ/δ) is expressed in various types of liver cells with relatively higher expression in KCs and HSCs. Accumulating evidence has revealed the versatile functions of PPARβ/δ such as controlling lipid homeostasis, inhibiting inflammation, regulating glucose metabolism, and restoring insulin sensitivity, suggesting that PPARβ/δ may serve as a potential molecular drug target for various liver diseases. This article aims to provide a concise review of the structure, expression pattern and biological functions of PPARβ/δ in the liver and its roles in various liver diseases, and to discuss potential future research perspectives.
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Affiliation(s)
- Xin Meng
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Lin Wang
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China
| | - Yan-Chao Du
- Jinan Institute for Product Quality Inspection, Jinan, Shandong 250102, China
| | - Dong Cheng
- Department of Health Test and Detection, Shandong Center for Disease Control and Prevention, Jinan, Shandong 250014, China.
| | - Tao Zeng
- Institute of Toxicology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China.
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Jahanbani F, Sing JC, Maynard RD, Jahanbani S, Dafoe J, Dafoe W, Jones N, Wallace KJ, Rastan A, Maecker HT, Röst HL, Snyder MP, Davis RW. Longitudinal cytokine and multi-modal health data of an extremely severe ME/CFS patient with HSD reveals insights into immunopathology, and disease severity. Front Immunol 2024; 15:1369295. [PMID: 38650940 PMCID: PMC11033372 DOI: 10.3389/fimmu.2024.1369295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 03/18/2024] [Indexed: 04/25/2024] Open
Abstract
Introduction Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) presents substantial challenges in patient care due to its intricate multisystem nature, comorbidities, and global prevalence. The heterogeneity among patient populations, coupled with the absence of FDA-approved diagnostics and therapeutics, further complicates research into disease etiology and patient managment. Integrating longitudinal multi-omics data with clinical, health,textual, pharmaceutical, and nutraceutical data offers a promising avenue to address these complexities, aiding in the identification of underlying causes and providing insights into effective therapeutics and diagnostic strategies. Methods This study focused on an exceptionally severe ME/CFS patient with hypermobility spectrum disorder (HSD) during a period of marginal symptom improvements. Longitudinal cytokine profiling was conducted alongside the collection of extensive multi-modal health data to explore the dynamic nature of symptoms, severity, triggers, and modifying factors. Additionally, an updated severity assessment platform and two applications, ME-CFSTrackerApp and LexiTime, were introduced to facilitate real-time symptom tracking and enhance patient-physician/researcher communication, and evaluate response to medical intervention. Results Longitudinal cytokine profiling revealed the significance of Th2-type cytokines and highlighted synergistic activities between mast cells and eosinophils, skewing Th1 toward Th2 immune responses in ME/CFS pathogenesis, particularly in cognitive impairment and sensorial intolerance. This suggests a potentially shared underlying mechanism with major ME/CFS comorbidities such as HSD, Mast cell activation syndrome, postural orthostatic tachycardia syndrome (POTS), and small fiber neuropathy. Additionally, the data identified potential roles of BCL6 and TP53 pathways in ME/CFS etiology and emphasized the importance of investigating adverse reactions to medication and supplements and drug interactions in ME/CFS severity and progression. Discussion Our study advocates for the integration of longitudinal multi-omics with multi-modal health data and artificial intelligence (AI) techniques to better understand ME/CFS and its major comorbidities. These findings highlight the significance of dysregulated Th2-type cytokines in patient stratification and precision medicine strategies. Additionally, our results suggest exploring the use of low-dose drugs with partial agonist activity as a potential avenue for ME/CFS treatment. This comprehensive approach emphasizes the importance of adopting a patient-centered care approach to improve ME/CFS healthcare management, disease severity assessment, and personalized medicine. Overall, these findings contribute to our understanding of ME/CFS and offer avenues for future research and clinical practice.
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Affiliation(s)
- Fereshteh Jahanbani
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Justin Cyril Sing
- Department of Molecular Genetics, Donnelly Center, University of Toronto, Toronto, ON, Canada
| | - Rajan Douglas Maynard
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Shaghayegh Jahanbani
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Veterans Affairs (VA) Palo Alto Health Care System, Palo Alto, CA, United States
| | - Janet Dafoe
- ME/CFS Collaborative Research Center at Stanford, Stanford Genome Technology Center, Stanford University School of Medicine, Palo Alto, CA, United States
| | - Whitney Dafoe
- ME/CFS Collaborative Research Center at Stanford, Stanford Genome Technology Center, Stanford University School of Medicine, Palo Alto, CA, United States
| | - Nathan Jones
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Kelvin J. Wallace
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Azuravesta Rastan
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Holden T. Maecker
- Sean N. Parker Center for Allergy and Asthma Research at Stanford University, Pulmonary and Critical Care Medicine, Institute of Immunity, Transplantation, and Infectious Diseases, Stanford University, Palo Alto, CA, United States
| | - Hannes L. Röst
- Department of Molecular Genetics, Donnelly Center, University of Toronto, Toronto, ON, Canada
| | - Michael P. Snyder
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, United States
| | - Ronald W. Davis
- ME/CFS Collaborative Research Center at Stanford, Stanford Genome Technology Center, Stanford University School of Medicine, Palo Alto, CA, United States
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Wang J, Wu Z, Huang Y, Jin L, Xu J, Yao Z, Ouyang X, Zhou Z, Mao S, Cao J, Lai B, Shen W. IRF4 induces M1 macrophage polarization and aggravates ulcerative colitis progression by the Bcl6-dependent STAT3 pathway. ENVIRONMENTAL TOXICOLOGY 2024; 39:2390-2404. [PMID: 38164749 DOI: 10.1002/tox.24106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/05/2023] [Accepted: 12/10/2023] [Indexed: 01/03/2024]
Abstract
Ulcerative colitis (UC) is an idiopathic chronic intestinal inflammation. An increasing body of evidence shows that macrophages play an important role in the pathogenesis of UC. Interferon regulatory factor 4 (IRF4) is crucial for the development of autoimmune diseases via regulating immune cells. This research was designed to explore the function of IRF4 in UC and its association with macrophage polarization. The in vitro model of UC was established by stimulating colonic epithelial cells with tumor necrosis factor α (TNF-α). A mouse model of UC was constructed by injecting C57BL/6 mice with dextran sulfate sodium salt. Flow cytometry was used to assess percentage of CD11b+ CD86+ and CD11b+ CD206+ cells in bone marrow macrophages. Occult blood tests were used to detect hematochezia. Hematoxylin and eosin staining assay was used to assess colon pathological changes. Enzyme-linked immunosorbent assay (ELISA) was used to detect concentrations of inflammatory cytokines. The interaction of IRF4 and B-cell lymphoma 6 (Bcl6) was confirmed using GST pull-down and coimmunoprecipitation assays. Our findings revealed that IRF4 promoted cell apoptosis and stimulated M1 macrophage polarization in vitro. Furthermore, IRF4 aggravated symptoms of the mouse model of UC and aggravated M1 macrophage polarization in vivo. IRF4 negatively regulated Bcl6 expression. Downregulation of Bcl6 promoted apoptosis and M1 macrophage polarization in the presence of IRF4 in vitro and in vivo. Moreover, Bcl6 positively mediated the Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) signaling pathway. In conclusion, IRF4 aggravated UC progression through promoting M1 macrophage polarization via Bcl6/JAK2/STAT3 pathway. These findings suggested that IRF4 might be a good target to competitively inhibit or to treat with UC.
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Affiliation(s)
- Jiwei Wang
- Department of Ultrasound, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhao Wu
- Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yulin Huang
- Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Lin Jin
- Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jinyi Xu
- Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhiyi Yao
- Nanchang University, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xi Ouyang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Zhiyong Zhou
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Shengxun Mao
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jiaqing Cao
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Bin Lai
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Wei Shen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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Liu C, Guo S, Liu R, Guo M, Wang Q, Chai Z, Xiao B, Ma C. Fasudil-modified macrophages reduce inflammation and regulate the immune response in experimental autoimmune encephalomyelitis. Neural Regen Res 2024; 19:671-679. [PMID: 37721300 PMCID: PMC10581551 DOI: 10.4103/1673-5374.379050] [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: 12/22/2022] [Revised: 04/10/2023] [Accepted: 05/22/2023] [Indexed: 09/19/2023] Open
Abstract
Multiple sclerosis is characterized by demyelination and neuronal loss caused by inflammatory cell activation and infiltration into the central nervous system. Macrophage polarization plays an important role in the pathogenesis of experimental autoimmune encephalomyelitis, a traditional experimental model of multiple sclerosis. This study investigated the effect of Fasudil on macrophages and examined the therapeutic potential of Fasudil-modified macrophages in experimental autoimmune encephalomyelitis. We found that Fasudil induced the conversion of macrophages from the pro-inflammatory M1 type to the anti-inflammatory M2 type, as shown by reduced expression of inducible nitric oxide synthase/nitric oxide, interleukin-12, and CD16/32 and increased expression of arginase-1, interleukin-10, CD14, and CD206, which was linked to inhibition of Rho kinase activity, decreased expression of toll-like receptors, nuclear factor-κB, and components of the mitogen-activated protein kinase signaling pathway, and generation of the pro-inflammatory cytokines tumor necrosis factor-α, interleukin-1β, and interleukin-6. Crucially, Fasudil-modified macrophages effectively decreased the impact of experimental autoimmune encephalomyelitis, resulting in later onset of disease, lower symptom scores, less weight loss, and reduced demyelination compared with unmodified macrophages. In addition, Fasudil-modified macrophages decreased interleukin-17 expression on CD4+ T cells and CD16/32, inducible nitric oxide synthase, and interleukin-12 expression on F4/80+ macrophages, as well as increasing interleukin-10 expression on CD4+ T cells and arginase-1, CD206, and interleukin-10 expression on F4/80+ macrophages, which improved immune regulation and reduced inflammation. These findings suggest that Fasudil-modified macrophages may help treat experimental autoimmune encephalomyelitis by inducing M2 macrophage polarization and inhibiting the inflammatory response, thereby providing new insight into cell immunotherapy for multiple sclerosis.
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Affiliation(s)
- Chunyun Liu
- Institute of Brain Science, Shanxi Datong University, Datong, Shanxi Province, China
| | - Shangde Guo
- Institute of Brain Science, Shanxi Datong University, Datong, Shanxi Province, China
| | - Rong Liu
- Institute of Brain Science, Shanxi Datong University, Datong, Shanxi Province, China
| | - Minfang Guo
- Institute of Brain Science, Shanxi Datong University, Datong, Shanxi Province, China
| | - Qing Wang
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, Shanxi Province, China
| | - Zhi Chai
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, Shanxi Province, China
| | - Baoguo Xiao
- Institute of Neurology, Huashan Hospital, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
| | - Cungen Ma
- Institute of Brain Science, Shanxi Datong University, Datong, Shanxi Province, China
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, Shanxi Province, China
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Tai Y, Sakaida Y, Kawasaki R, Kanemaru K, Akimoto K, Brombacher F, Ogawa S, Nakamura Y, Harada Y. Foxp3 and Bcl6 deficiency synergistically induces spontaneous development of atopic dermatitis-like skin disease. Int Immunol 2023; 35:423-435. [PMID: 37279329 DOI: 10.1093/intimm/dxad018] [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: 04/12/2023] [Accepted: 05/01/2023] [Indexed: 06/08/2023] Open
Abstract
Atopic dermatitis (AD) is a common chronic skin disease caused by immune dysfunction, specifically the hyperactivation of Th2 immunity. AD is a complex disease with multiple factors contributing to its development; however, the interaction between these factors is not fully understood. In this study, we demonstrated that the conditional deletion of both the forkhead box p3 (Foxp3) and B-cell lymphoma 6 (Bcl6) genes induced the spontaneous development of AD-like skin inflammation with hyperactivation of type 2 immunity, skin barrier dysfunction, and pruritus, which were not induced by the single deletion of each gene. Furthermore, the development of AD-like skin inflammation was largely dependent on IL-4/13 signaling but not on immunoglobulin E (IgE). Interestingly, we found that the loss of Bcl6 alone increased the expression of thymic stromal lymphopoietin (TSLP) and interleukin (IL)-33 in the skin, suggesting that Bcl6 controls Th2 responses by suppressing TSLP and IL-33 expression in epithelial cells. Our results suggest that Foxp3 and Bcl6 cooperatively suppress the pathogenesis of AD. Furthermore, these results revealed an unexpected role of Bcl6 in suppressing Th2 responses in the skin.
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Affiliation(s)
- Yuki Tai
- Laboratory of Pharmaceutical Immunology, Department of Medicinal and Life Sciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Yuki Sakaida
- Laboratory of Pharmaceutical Immunology, Department of Medicinal and Life Sciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Riyo Kawasaki
- Laboratory of Pharmaceutical Immunology, Department of Medicinal and Life Sciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Kaori Kanemaru
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Kazunori Akimoto
- Laboratory of Molecular Medical Science, Department of Medicinal and Life Sciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Frank Brombacher
- Division of Immunology, Health Science Faculty, International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component & Institute of Infectious Diseases and Molecular Medicine (IDM), University of Cape Town, Cape Town 7701, South Africa
| | - Shuhei Ogawa
- Division of Integrated Research, Research Institute for Biomedical Sciences, Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Yoshikazu Nakamura
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | - Yohsuke Harada
- Laboratory of Pharmaceutical Immunology, Department of Medicinal and Life Sciences, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
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Jeon Y, Chow SH, Stuart I, Weir A, Yeung AT, Hale C, Sridhar S, Dougan G, Vince JE, Naderer T. FBXO11 governs macrophage cell death and inflammation in response to bacterial toxins. Life Sci Alliance 2023; 6:e202201735. [PMID: 36977592 PMCID: PMC10053445 DOI: 10.26508/lsa.202201735] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 03/19/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Staphylococcus aureus causes severe infections such as pneumonia and sepsis depending on the pore-forming toxin Panton-Valentine leukocidin (PVL). PVL kills and induces inflammation in macrophages and other myeloid cells by interacting with the human cell surface receptor, complement 5a receptor 1 (C5aR1). C5aR1 expression is tighly regulated and may thus modulate PVL activity, although the mechanisms involved remain incompletely understood. Here, we used a genome-wide CRISPR/Cas9 screen and identified F-box protein 11 (FBXO11), an E3 ubiquitin ligase complex member, to promote PVL toxicity. Genetic deletion of FBXO11 reduced the expression of C5aR1 at the mRNA level, whereas ectopic expression of C5aR1 in FBXO11-/- macrophages, or priming with LPS, restored C5aR1 expression and thereby PVL toxicity. In addition to promoting PVL-mediated killing, FBXO11 dampens secretion of IL-1β after NLRP3 activation in response to bacterial toxins by reducing mRNA levels in a BCL-6-dependent and BCL-6-independent manner. Overall, these findings highlight that FBXO11 regulates C5aR1 and IL-1β expression and controls macrophage cell death and inflammation following PVL exposure.
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Affiliation(s)
- Yusun Jeon
- Department of Biochemistry & Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia
| | - Seong H Chow
- Department of Biochemistry & Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia
| | - Isabella Stuart
- Department of Biochemistry & Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia
| | - Ashley Weir
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- The Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Amy Ty Yeung
- The Wellcome Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
| | - Christine Hale
- The Wellcome Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Sushmita Sridhar
- The Wellcome Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Gordon Dougan
- The Wellcome Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Australia
- The Department of Medical Biology, University of Melbourne, Parkville, Australia
| | - Thomas Naderer
- Department of Biochemistry & Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia
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Correlation between B-cell lymphoma 6 with the balance of T helper-1/2 and severity of allergic rhinitis. Allergol Immunopathol (Madr) 2023; 51:1-8. [PMID: 36617815 DOI: 10.15586/aei.v51i1.673] [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: 05/18/2022] [Accepted: 06/22/2022] [Indexed: 01/04/2023]
Abstract
OBJECTIVE Allergic rhinitis (AR) is a prevailing immune disorder affecting the nasal mucosa. B-cell lymphoma 6 (BCL6) imposes essential roles in immunity. This study probed into the serum expression of BCL6 and its effect on AR diagnosis and patients' quality of life (QOL). METHODS A total of 113 patients with AR including 38 cases with mild AR (MAR) and 75 cases with moderate-severe AR (MSAR) were enrolled, with 101 healthy people enrolled as control. Serum expression of BCL6 was detected by RT-qPCR and the diagnostic efficacy of BCL6 for AR was analyzed using the receiver operating characteristic curve. The proportion of T helper-1/2 (Th1/Th2) cells in CD4+ T cells in peripheral blood mononuclear cells was detected using flow cytometry. The correlation between BCL6 and Th1/Th2 cells and the effects of BCL6 expression on patients' QOL were assessed by Pearson analysis and Mini-RQLQ questionnaire. RESULTS BCL6 was downregulated in patients with AR, serum BCL6 level < 0.8450 had certain auxiliary diagnostic values for AR, and serum BCL6 level < 0.5400 could assist the diagnosis of AR severity. Th1 cell proportion in CD4+ T cells was decreased, whereas Th2 cell proportion was increased with AR severity. BCL6 was positively-linked with Th1 cells but inversely-correlated with Th2 cells in patients with AR. Patients with AR with low BCL6 expression had a poorer QOL compared with high BCL6 expression. The domains most affected by BCL6 expression were practical problems, nasal symptoms, and lacrimation. CONCLUSION Serum BCL6 is downregulated and low BCL6 expression greatly deteriorates QOL in patients with AR.
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Farooq T, Lin Q, She X, Chen T, Li Z, Yu L, Lan G, Tang Y, He Z. Cotton leaf curl Multan virus differentially regulates innate antiviral immunity of whitefly ( Bemisia tabaci) vector to promote cryptic species-dependent virus acquisition. FRONTIERS IN PLANT SCIENCE 2022; 13:1040547. [PMID: 36452094 PMCID: PMC9702342 DOI: 10.3389/fpls.2022.1040547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/28/2022] [Indexed: 06/17/2023]
Abstract
Begomoviruses represent the largest group of economically important, highly pathogenic, DNA plant viruses that contribute a substantial amount of global crop disease burden. The exclusive transmission of begomoviruses by whiteflies (Bemisia tabaci) requires them to interact and efficiently manipulate host responses at physiological, biological and molecular scales. However, the molecular mechanisms underlying complex begomovirus-whitefly interactions that consequently substantiate efficient virus transmission largely remain unknown. Previously, we found that whitefly Asia II 7 cryptic species can efficiently transmit cotton leaf curl Multan virus (CLCuMuV) while MEAM1 cryptic species is a poor carrier and incompetent vector of CLCuMuV. To investigate the potential mechanism/s that facilitate the higher acquisition of CLCuMuV by its whitefly vector (Asia II 7) and to identify novel whitefly proteins that putatively interact with CLCuMuV-AV1 (coat protein), we employed yeast two-hybrid system, bioinformatics, bimolecular fluorescence complementation, RNA interference, RT-qPCR and bioassays. We identified a total of 21 Asia II 7 proteins putatively interacting with CLCuMuV-AV1. Further analyses by molecular docking, Y2H and BiFC experiments validated the interaction between a whitefly innate immunity-related protein (BTB/POZ) and viral AV1 (coat protein). Gene transcription analysis showed that the viral infection significantly suppressed the transcription of BTB/POZ and enhanced the accumulation of CLCuMuV in Asia II 7, but not in MEAM1 cryptic species. In contrast to MEAM1, the targeted knock-down of BTB/POZ substantially reduced the ability of Asia II 7 to acquire and accumulate CLCuMuV. Additionally, antiviral immune signaling pathways (Toll, Imd, Jnk and Jak/STAT) were significantly suppressed following viral infection of Asia II 7 whiteflies. Taken together, the begomovirus CLCuMuV potentiates efficient virus accumulation in its vector B. tabaci Asia II 7 by targeting and suppressing the transcription of an innate immunity-related BTB/POZ gene and other antiviral immune responses in a cryptic species-specific manner.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Zifu He
- *Correspondence: Yafei Tang, ; Zifu He,
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Almohaisen FLJ, Heidary S, Sobah ML, Ward AC, Liongue C. B cell lymphoma 6A regulates immune development and function in zebrafish. Front Cell Infect Microbiol 2022; 12:887278. [PMID: 36389136 PMCID: PMC9650189 DOI: 10.3389/fcimb.2022.887278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 10/03/2022] [Indexed: 11/25/2022] Open
Abstract
BCL6A is a transcriptional repressor implicated in the development and survival of B and T lymphoctyes, which is also highly expressed in many non-Hodgkin’s lymphomas, such as diffuse large B cell lymphoma and follicular lymphoma. Roles in other cell types, including macrophages and non-hematopoietic cells, have also been suggested but require further investigation. This study sought to identify and characterize zebrafish BCL6A and investigate its role in immune cell development and function, with a focus on early macrophages. Bioinformatics analysis identified a homologue for BCL6A (bcl6aa), as well as an additional fish-specific duplicate (bcl6ab) and a homologue for the closely-related BCL6B (bcl6b). The human BCL6A and zebrafish Bcl6aa proteins were highly conserved across the constituent BTB/POZ, PEST and zinc finger domains. Expression of bcl6aa during early zebrafish embryogenesis was observed in the lateral plate mesoderm, a site of early myeloid cell development, with later expression seen in the brain, eye and thymus. Homozygous bcl6aa mutants developed normally until around 14 days post fertilization (dpf), after which their subsequent growth and maturation was severely impacted along with their relative survival, with heterozygous bcl6aa mutants showing an intermediate phenotype. Analysis of immune cell development revealed significantly decreased lymphoid and macrophage cells in both homozygous and heterozygous bcl6aa mutants, being exacerbated in homozygous mutants. In contrast, the number of neutrophils was unaffected. Only the homozygous bcl6aa mutants showed decreased macrophage mobility in response to wounding and reduced ability to contain bacterial infection. Collectively, this suggests strong conservation of BCL6A across evolution, including a role in macrophage biology.
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Affiliation(s)
- Farooq L. J. Almohaisen
- School of Medicine, Deakin University, Geelong, VIC, Australia
- Department of Medical Laboratory Technology, Southern Technical University, Basra, Iraq
| | | | | | - Alister C. Ward
- School of Medicine, Deakin University, Geelong, VIC, Australia
- Institute for Mental and Physical Health and Clinical Translation, Deakin University, Geelong, VIC, Australia
| | - Clifford Liongue
- School of Medicine, Deakin University, Geelong, VIC, Australia
- Institute for Mental and Physical Health and Clinical Translation, Deakin University, Geelong, VIC, Australia
- *Correspondence: Clifford Liongue,
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Cassidy BR, Sonntag WE, Leenen PJM, Drevets DA. Systemic Listeria monocytogenes infection in aged mice induces long-term neuroinflammation: the role of miR-155. Immun Ageing 2022; 19:25. [PMID: 35614490 PMCID: PMC9130456 DOI: 10.1186/s12979-022-00281-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 05/12/2022] [Indexed: 01/23/2023]
Abstract
BACKGROUND Understanding mechanisms of pathologic neuroinflammation is essential for improving outcomes after central nervous system infections. Brain tissue-resident memory T cells (bTRM) are recruited during central nervous system infection and promote pathogen control as well as noxious inflammation. Our prior studies in young mice showed optimal recruitment of CD8+ bTRM during neuroinvasive Listeria monocytogenes (Lm) infection required miR-155, and was significantly inhibited by anti-miR-155 oligonucleotides. Since Lm is an important pathogen in the elderly, we hypothesized anti-miR-155 would also inhibit accumulation of CD8+ bTRM in aged mice infected with Lm. METHODS Young (2 mo) and aged (> 18 mo) male C57BL/6 mice were infected intra-peritoneally with wild-type Lm, or avirulent Lm mutants lacking the genes required for intracellular motility (ΔactA) or phagosomal escape (Δhly), then were given antibiotics. Brain leukocytes and their intracellular cytokine production were quantified by flow cytometry >28d post-infection (p.i.). The role of miR-155 was tested by injecting mice with anti-miR-155 or control oligonucleotides along with antibiotics. RESULTS Aged mice had significantly more homeostatic CD8+ bTRM than did young mice, which did not increase after infection with wild-type Lm despite 50% mortality, whereas young mice suffered no mortality after a larger inoculum. For direct comparison of post-infectious neuroinflammation after the same inoculum, young and aged mice were infected with 107 CFU ΔactA Lm. This mutant caused no mortality and significantly increased CD8+ bTRM 28d p.i. in both groups, whereas bone marrow-derived myeloid cells, particularly neutrophils, increased only in aged mice. Notably, anti-miR-155 reduced accumulation of brain myeloid cells in aged mice after infection, whereas CD8+ bTRM were unaffected. CONCLUSIONS Systemic infection with Lm ΔactA is a novel model for studying infection-induced brain inflammation in aged mice without excessive mortality. CD8+ bTRM increase in both young and aged mice after infection, whereas only in aged mice bone marrow-derived myeloid cells increase long-term. In aged mice, anti-miR-155 inhibits brain accumulation of myeloid cells, but not CD8+ bTRM. These results suggest young and aged mice differ in manifestations and mechanisms of infection-induced neuroinflammation and give insight for developing therapies to ameliorate brain inflammation following severe infection in the elderly.
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Affiliation(s)
- Benjamin R. Cassidy
- Infectious Diseases, Department of Internal Medicine, 800 Stanton L. Young, Suite 7300, Oklahoma City, OK 73104 USA
| | - William E. Sonntag
- grid.266902.90000 0001 2179 3618Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Pieter J. M. Leenen
- grid.5645.2000000040459992XDepartment of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Douglas A. Drevets
- Infectious Diseases, Department of Internal Medicine, 800 Stanton L. Young, Suite 7300, Oklahoma City, OK 73104 USA
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11
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Saleh LS, Amer LD, Thompson BJ, Danhorn T, Knapp JR, Gibbings SL, Thomas S, Barthel L, O'Connor BP, Janssen WJ, Alper S, Bryant SJ. Mapping Macrophage Polarization and Origin during the Progression of the Foreign Body Response to a Poly(ethylene glycol) Hydrogel Implant. Adv Healthc Mater 2022; 11:e2102209. [PMID: 34967497 PMCID: PMC9081184 DOI: 10.1002/adhm.202102209] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/04/2021] [Indexed: 11/10/2022]
Abstract
Poly(ethylene glycol) (PEG) hydrogels hold promise for in vivo applications but induce a foreign body response (FBR). While macrophages are key in the FBR, many questions remain. This study investigates temporal changes in the transcriptome of implant-associated monocytes and macrophages. Proinflammatory pathways are upregulated in monocytes compared to control monocytes but subside by day 28. Macrophages are initially proinflammatory but shift to a profibrotic state by day 14, coinciding with fibrous capsule emergence. Next, this study assesses the origin of macrophages responsible for fibrous encapsulation using wildtype, C-C Motif Chemokine Receptor 2 (CCR2)-/- mice that lack recruited macrophages, and Macrophage Fas-Induced Apoptosis (MaFIA) mice that enable macrophage ablation. Subpopulations of recruited and tissue-resident macrophages are identified. Fibrous encapsulation proceeds in CCR2-/- mice similar to wildtype mice. However, studies in MaFIA mice indicate that macrophages are necessary for fibrous capsule formation. These findings suggest that macrophage origin impacts the FBR progression and provides evidence that tissue-resident macrophages and not the recruited macrophages may drive fibrosis in the FBR to PEG hydrogels. This study demonstrates that implant-associated monocytes and macrophages have temporally distinct transcriptomes in the FBR and that profibrotic pathways associated with macrophages may be enriched in tissue-resident macrophages.
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Affiliation(s)
- Leila S. Saleh
- Department of Chemical and Biological Engineering University of Colorado at Boulder 3415 Colorado Ave Boulder CO 80309 USA
| | - Luke D. Amer
- Department of Chemical and Biological Engineering University of Colorado at Boulder 3415 Colorado Ave Boulder CO 80309 USA
| | - Brittany J. Thompson
- Materials Science and Engineering Program University of Colorado at Boulder 3415 Colorado Ave Boulder CO 80309 USA
| | - Thomas Danhorn
- Center for Genes Environment and Health National Jewish Health 1400 Jackson St Denver CO 80206 USA
| | - Jennifer R. Knapp
- Center for Genes Environment and Health National Jewish Health 1400 Jackson St Denver CO 80206 USA
| | | | - Stacey Thomas
- Division of Pulmonary Sciences and Critical Care Medicine University of Colorado Denver Aurora CO 80045 USA
| | - Lea Barthel
- Division of Pulmonary Sciences and Critical Care Medicine University of Colorado Denver Aurora CO 80045 USA
| | - Brian P. O'Connor
- Center for Genes Environment and Health National Jewish Health 1400 Jackson St Denver CO 80206 USA
- Department of Immunology and Genomic Medicine National Jewish Health Denver CO 80206 USA
| | - William J. Janssen
- Division of Pulmonary Sciences and Critical Care Medicine University of Colorado Denver Aurora CO 80045 USA
- Division of Pulmonary Sleep, and Critical Care Medicine National Jewish Health Denver CO 80206 USA
| | - Scott Alper
- Center for Genes Environment and Health National Jewish Health 1400 Jackson St Denver CO 80206 USA
- Department of Immunology and Genomic Medicine National Jewish Health Denver CO 80206 USA
- Department of Immunology and Microbiology University of Colorado School of Medicine Aurora CO 80045 USA
| | - Stephanie J. Bryant
- Department of Chemical and Biological Engineering University of Colorado at Boulder 3415 Colorado Ave Boulder CO 80309 USA
- Materials Science and Engineering Program University of Colorado at Boulder 3415 Colorado Ave Boulder CO 80309 USA
- BioFrontiers Institute University of Colorado at Boulder Boulder CO 80309 USA
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12
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Myer PA, Kim H, Blümel AM, Finnegan E, Kel A, Thompson TV, Greally JM, Prehn JHM, O’Connor DP, Friedman RA, Floratos A, Das S. Master Transcription Regulators and Transcription Factors Regulate Immune-Associated Differences Between Patients of African and European Ancestry With Colorectal Cancer. GASTRO HEP ADVANCES 2022; 1:328-341. [PMID: 35711675 PMCID: PMC9151447 DOI: 10.1016/j.gastha.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 01/20/2022] [Indexed: 11/21/2022]
Abstract
Background and Aims Individuals of African (AFR) ancestry have a higher incidence of colorectal cancer (CRC) than those of European (EUR) ancestry and exhibit significant health disparities. Previous studies have noted differences in the tumor microenvironment between AFR and EUR patients with CRC. However, the molecular regulatory processes that underpin these immune differences remain largely unknown. Methods Multiomics analysis was carried out for 55 AFR and 456 EUR patients with microsatellite-stable CRC using The Cancer Genome Atlas. We evaluated the tumor microenvironment by using gene expression and methylation data, transcription factor, and master transcriptional regulator analysis to identify the cell signaling pathways mediating the observed phenotypic differences. Results We demonstrate that downregulated genes in AFR patients with CRC showed enrichment for canonical pathways, including chemokine signaling. Moreover, evaluation of the tumor microenvironment showed that cytotoxic lymphocytes and neutrophil cell populations are significantly decreased in AFR compared with EUR patients, suggesting AFR patients have an attenuated immune response. We further demonstrate that molecules called "master transcriptional regulators" (MTRs) play a critical role in regulating the expression of genes impacting key immune processes through an intricate signal transduction network mediated by disease-associated transcription factors (TFs). Furthermore, a core set of these MTRs and TFs showed a positive correlation with levels of cytotoxic lymphocytes and neutrophils across both AFR and EUR patients with CRC, thus suggesting their role in driving the immune infiltrate differences between the two ancestral groups. Conclusion Our study provides an insight into the intricate regulatory landscape of MTRs and TFs that orchestrate the differences in the tumor microenvironment between patients with CRC of AFR and EUR ancestry.
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Key Words
- AFR, African
- African Americans.
- CMA, Composite Module Analyst
- CRC, colorectal cancer
- ChAMP, Chip Analysis Methylation Pipeline
- Colorectal Cancer
- DEGs, differentially expressed genes
- DMPs, differentially methylated CpG positions
- EUR, European
- FDR, false discovery rate
- Genomic Profiling
- Health Disparities
- MCP, microenvironment cell population
- MSI-H, microsatellite high
- MSI-L, microsatellite low
- MSS, microsatellite stable
- MTRs, master transcriptional regulators
- TCGA, The Cancer Genome Atlas
- TFBS, TF binding site
- TFs, transcription factors
- TMB, tumor mutation burden
- TSS, transcription start site
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Affiliation(s)
- Parvathi A. Myer
- Montefiore Medical Center, Albert Einstein Cancer Center, Bronx, NY
| | - Hyunjin Kim
- St. Jude’s Children’s Research Hospital, Memphis, Tennessee TN
| | - Anna M. Blümel
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons, Dublin, Ireland
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Ellen Finnegan
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons, Dublin, Ireland
| | - Alexander Kel
- GeneXplain GmbH, Wolfenbuettel, Germany
- BIOSOFT.RU, LLC, Novobirsk, Russia
- Institute of Chemical Biology and Fundamental Medicine SBRAS, Novobirsk, Russia
| | | | | | - Jochen HM. Prehn
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Darran P. O’Connor
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons, Dublin, Ireland
| | - Richard A. Friedman
- Biomedical Informatics Shared Resource, Herbert Irving Comprehensive Cancer Center, and Department of Biomedical Informatics, Columbia University Irving Medical Center, New York, NY
| | - Aris Floratos
- Department of Systems Biology, Columbia University, New York, NY
- Department of Biomedical Informatics, Columbia University, New York, NY
| | - Sudipto Das
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons, Dublin, Ireland
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13
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Talker SC, Barut GT, Lischer HE, Rufener R, von Münchow L, Bruggmann R, Summerfield A. Monocyte biology conserved across species: Functional insights from cattle. Front Immunol 2022; 13:889175. [PMID: 35967310 PMCID: PMC9373011 DOI: 10.3389/fimmu.2022.889175] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 06/30/2022] [Indexed: 12/24/2022] Open
Abstract
Similar to human monocytes, bovine monocytes can be split into CD14highCD16- classical, CD14highCD16high intermediate and CD14-/dimCD16high nonclassical monocytes (cM, intM, and ncM, respectively). Here, we present an in-depth analysis of their steady-state bulk- and single-cell transcriptomes, highlighting both pronounced functional specializations and transcriptomic relatedness. Bulk gene transcription indicates pro-inflammatory and antibacterial roles of cM, while ncM and intM appear to be specialized in regulatory/anti-inflammatory functions and tissue repair, as well as antiviral responses and T-cell immunomodulation. Notably, intM stood out by high expression of several genes associated with antigen presentation. Anti-inflammatory and antiviral functions of ncM are further supported by dominant oxidative phosphorylation and selective strong responses to TLR7/8 ligands, respectively. Moreover, single-cell RNA-seq revealed previously unappreciated heterogeneity within cM and proposes intM as a transient differentiation intermediate between cM and ncM.
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Affiliation(s)
- Stephanie C. Talker
- Institute of Virology and Immunology, Bern, Switzerland
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
- *Correspondence: Stephanie C. Talker,
| | - G. Tuba Barut
- Institute of Virology and Immunology, Bern, Switzerland
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Heidi E.L. Lischer
- Interfaculty Bioinformatics Unit and Swiss Institute of Bioinformatics, University of Bern, Bern, Switzerland
| | - Reto Rufener
- Institute of Parasitology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | | | - Rémy Bruggmann
- Interfaculty Bioinformatics Unit and Swiss Institute of Bioinformatics, University of Bern, Bern, Switzerland
| | - Artur Summerfield
- Institute of Virology and Immunology, Bern, Switzerland
- Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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14
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Zhang S, Lin S, Tang Q, Yan Z. Knockdown of miR‑205‑5p alleviates the inflammatory response in allergic rhinitis by targeting B‑cell lymphoma 6. Mol Med Rep 2021; 24:818. [PMID: 34558634 PMCID: PMC8477609 DOI: 10.3892/mmr.2021.12458] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 08/19/2021] [Indexed: 01/22/2023] Open
Abstract
Allergic rhinitis (AR) is an IgE-mediated upper airway disease with a high worldwide prevalence. MicroRNA (miR)-205-5p upregulation has been observed in AR; however, its role is poorly understood. The aim of the present study was to investigate the effect of miR-205-5p on AR-associated inflammation. To establish an AR model, BALB/c mice were sensitized using an intraperitoneal injection of ovalbumin (OVA) on days 0, 7 and 14, followed by intranasal challenge with OVA on days 21–27. A lentiviral sponge for miR-205-5p was used to downregulate miR-205-5p in vivo via intranasal administration on days 20–26. Reverse transcription-quantitative PCR revealed that miR-205-5p was upregulated in AR mice. Notably, miR-205-5p knockdown reduced the frequency of nose-rubbing and sneezing, and attenuated pathological alterations in the nasal mucosa. The levels of total and OVA-specific IgE, cytokines IL-4, IL-5 and IL-13, and inflammatory cells, were decreased by miR-205-5p knockdown in AR mice. In addition, miR-205-5p knockdown inhibited nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome activation by reducing the expression levels of NLRP3, apoptosisassociated specklike protein containing a CARD, cleaved caspase-1 and IL-1β by western blot analysis. B-cell lymphoma 6 (BCL6) was confirmed as a target of miR-205-5p by luciferase reporter assay. In conclusion, the present findings suggested that miR-205-5p knockdown may attenuate the inflammatory response in AR by targeting BCL6, which may be a potential therapeutic target for AR.
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Affiliation(s)
- Shuang Zhang
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, Liaoning 110000, P.R. China
| | - Sihan Lin
- Department of Surgical Oncology, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Qiaofei Tang
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, Liaoning 110000, P.R. China
| | - Zhiyong Yan
- Department of Otorhinolaryngology, The Second Affiliated Hospital of Shenyang Medical College, Shenyang, Liaoning 110000, P.R. China
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15
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Zhan J, Kipp M, Han W, Kaddatz H. Ectopic lymphoid follicles in progressive multiple sclerosis: From patients to animal models. Immunology 2021; 164:450-466. [PMID: 34293193 PMCID: PMC8517596 DOI: 10.1111/imm.13395] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/15/2021] [Accepted: 07/16/2021] [Indexed: 12/19/2022] Open
Abstract
Ectopic lymphoid follicles (ELFs), resembling germinal centre‐like structures, emerge in a variety of infectious and autoimmune and neoplastic diseases. ELFs can be found in the meninges of around 40% of the investigated progressive multiple sclerosis (MS) post‐mortem brain tissues and are associated with the severity of cortical degeneration and clinical disease progression. Of predominant importance for progressive neuronal damage during the progressive MS phase appears to be meningeal inflammation, comprising diffuse meningeal infiltrates, B‐cell aggregates and compartmentalized ELFs. However, the absence of a uniform definition of ELFs impedes reproducible and comparable neuropathological research in this field. In this review article, we will first highlight historical aspects and milestones around the discovery of ELFs in the meninges of progressive MS patients. In the next step, we discuss how animal models may contribute to an understanding of the mechanisms underlying ELF formation. Finally, we summarize challenges in investigating ELFs and propose potential directions for future research.
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Affiliation(s)
- Jiangshan Zhan
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany.,Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Rostock, Germany
| | - Markus Kipp
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany.,Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Rostock, Germany
| | - Wenling Han
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University Health Science Cente, Beijing, China.,Peking University Center for Human Disease Genomics, Beijing, China
| | - Hannes Kaddatz
- Institute of Anatomy, Rostock University Medical Center, Rostock, Germany.,Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Rostock, Germany
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16
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Yuan Y, Yuan L, Li L, Liu F, Liu J, Chen Y, Cheng J, Lu Y. Mitochondrial transfer from mesenchymal stem cells to macrophages restricts inflammation and alleviates kidney injury in diabetic nephropathy mice via PGC-1α activation. STEM CELLS (DAYTON, OHIO) 2021; 39:913-928. [PMID: 33739541 DOI: 10.1002/stem.3375] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/23/2021] [Indexed: 02/05/2023]
Abstract
Mesenchymal stem cells (MSCs) have fueled ample translation for treatment of immune-mediated diseases. Our previous study had demonstrated that MSCs could elicit macrophages (Mφ) into anti-inflammatory phenotypes, and alleviate kidney injury in diabetic nephropathy (DN) mice via improving mitochondrial function of Mφ, yet the specific mechanism was unclear. Recent evidence indicated that MSCs communicated with their microenvironment through exchanges of mitochondria. By a coculture system consisting of MSCs and Mφ, we showed that MSCs-derived mitochondria (MSCs-Mito) were transferred into Mφ, and the mitochondrial functions were improved, which contributed to M2 polarization. Furthermore, we found that MSCs-Mito transfer activated peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α)-mediated mitochondrial biogenesis. In addition, PGC-1α interacted with TFEB in high glucose-induced Mφ, leading to the elevated lysosome-autophagy, which was essential to removal of damaged mitochondria. As a result, in Mφ, the mitochondrial bioenergy and capacity to combat inflammatory response were enhanced. Whereas, the immune-regulatory activity of MSCs-Mito was significantly blocked in PGC-1α knockdown Mφ. More importantly, MSCs-Mito transfer could be observed in DN mice, and the adoptive transfer of MSCs-Mito educated Mφ (MφMito ) inhibited the inflammatory response and alleviated kidney injury. However, the kidney-protective effects of MφMito were abolished when the MSCs-Mito was impaired with rotenone, and the similar results were also observed when MφMito were transfected with sipgc-1α before administration. Collectively, these findings suggested that MSCs elicited Mφ into anti-inflammatory phenotype and ameliorated kidney injury through mitochondrial transfer in DN mice, and the effects were relied on PGC-1α-mediated mitochondrial biogenesis and PGC-1α/TFEB-mediated lysosome-autophagy.
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Affiliation(s)
- Yujia Yuan
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Longhui Yuan
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Lan Li
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Fei Liu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Jingping Liu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Younan Chen
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Jingqiu Cheng
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and Immunology, NHFPC, Department of Nephrology, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, People's Republic of China
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17
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Shi B, Hao Y, Li W, Dong H, Xu M, Gao P. The enigmatic role of TIPE2 in asthma. Am J Physiol Lung Cell Mol Physiol 2020; 319:L163-L172. [PMID: 32493031 DOI: 10.1152/ajplung.00069.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Unlike other members of the tumor necrosis factor (TNF)-α-induced protein 8 (TNFAIP8/TIPE) family that play a carcinogenic role and regulate apoptosis, TNFAIP8-like 2 (TIPE2) can not only maintain immune homeostasis but also regulate inflammation. TIPE2 mainly restrains the activation of T cell receptor (TCR) and Toll-like receptors (TLR), regulating its downstream signaling pathways, thereby regulating inflammation. Interestingly, TIPE2 is abnormally expressed in many inflammatory diseases and may promote or inhibit inflammation in different diseases. This review summarizes the molecular target and cellular function of TIPE2 in immune cells and inflammatory diseases and the underlying mechanism by which TIPE2 regulates inflammation. The function and mechanism of TIPE2 in asthma is also explained in detail. TIPE2 is abnormally expressed in asthma and participates in the pathogenesis of different phenotypes of asthma through regulating multiple inflammatory cells' activity and function. Considering the indispensable role of TIPE2 in asthma, TIPE2 may be an effective therapeutic target in asthma. However, the available data are insufficient to provide a full understanding of the complex role of TIPE2 in human asthma. Further study is still necessary to explore the possible mechanism and functions of TIPE2 in different asthma phenotypes.
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Affiliation(s)
- Bingqing Shi
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Yuqiu Hao
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Wei Li
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Hongna Dong
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Mengting Xu
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Peng Gao
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin, China
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