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Bongartz H, Bradfield C, Gross J, Fraser I, Nita-Lazar A, Meier-Schellersheim M. IL-10 dependent adaptation allows macrophages to adjust inflammatory responses to TLR4 stimulation history. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.28.587272. [PMID: 38654826 PMCID: PMC11037870 DOI: 10.1101/2024.03.28.587272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
During an infection, innate immune cells must adjust nature and strength of their responses to changing pathogen abundances. To determine how stimulation of the pathogen sensing TLR4 shapes subsequent macrophage responses, we systematically varied priming and restimulation concentrations of its ligand KLA. We find that different priming strengths have very distinct effects at multiple stages of the signaling response, including receptor internalization, MAPK activation, cytokine and chemokine production, and nuclear translocation and chromatin association of NFκB and IκB members. In particular, restimulation-induced TNF-α production required KLA doses equal to or greater than those used for prior exposure, indicating that macrophages can detect and adaptively respond to changing TLR4 stimuli. Interestingly, while such adaptation was dependent on the anti-inflammatory cytokine IL-10, exogenous concentrations of IL-10 corresponding to those secreted after strong priming did not exert suppressive effects on TNF-α without such prior priming, confirming the critical role of TLR4 stimulation history.
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Affiliation(s)
- H. Bongartz
- Computational Systems Biology Section, Laboratory of Immune System Biology, National Institute of Allergy and infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - C. Bradfield
- Signaling Systems Section, Laboratory of Immune System Biology, National Institute of Allergy and infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - J. Gross
- Signaling Systems Section, Laboratory of Immune System Biology, National Institute of Allergy and infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - I.D.C. Fraser
- Signaling Systems Section, Laboratory of Immune System Biology, National Institute of Allergy and infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - A. Nita-Lazar
- Functional Cellular Networks Section, Laboratory of Immune System Biology, National Institute of Allergy and infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - M. Meier-Schellersheim
- Computational Systems Biology Section, Laboratory of Immune System Biology, National Institute of Allergy and infectious Diseases, National Institutes of Health, Bethesda, MD, USA
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2
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Berneking L, Bekere I, Rob S, Schnapp M, Huang J, Ruckdeschel K, Aepfelbacher M. A bacterial effector protein promotes nuclear translocation of Stat3 to induce IL-10. Eur J Cell Biol 2023; 102:151364. [PMID: 37806297 DOI: 10.1016/j.ejcb.2023.151364] [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: 04/25/2023] [Revised: 08/22/2023] [Accepted: 09/30/2023] [Indexed: 10/10/2023] Open
Abstract
The multifunctional Yersinia effector YopM inhibits effector triggered immunity and increases production of the anti-inflammatory cytokine Interleukin-10 (IL-10) to suppress the host immune response. Previously it was shown that YopM induces IL-10 gene expression by elevating phosphorylation of the serine-threonine kinase RSK1 in the nucleus of human macrophages. Using transcriptomics, we found that YopM strongly affects expression of genes belonging to the JAK-STAT signaling pathway. Further analysis revealed that YopM mediates nuclear translocation of the transcription factor Stat3 in Y. enterocolitica infected macrophages and that knockdown of Stat3 inhibited YopM-induced IL-10 gene expression. YopM-induced Stat3 translocation did not depend on autocrine IL-10, activation of RSK1 or tyrosine phosphorylation of Stat3. Thus, besides activation of RSK1, stimulation of nuclear translocation of Stat3 is another mechanism by which YopM increases IL-10 gene expression in macrophages.
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Affiliation(s)
- Laura Berneking
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Indra Bekere
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Sören Rob
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Marie Schnapp
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Jiabin Huang
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Klaus Ruckdeschel
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Martin Aepfelbacher
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany.
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Hamaguchi A, Fukuda H, Fujiwara K, Harada T, Fukushima K, Shuto S, Fujino H. Individual resolvin E family members work distinctly and in a coordinated manner in the resolution of inflammation. Prostaglandins Other Lipid Mediat 2023; 168:106759. [PMID: 37327943 DOI: 10.1016/j.prostaglandins.2023.106759] [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: 03/29/2023] [Revised: 06/02/2023] [Accepted: 06/12/2023] [Indexed: 06/18/2023]
Abstract
Three main E-type resolvins (RvEs): RvE1, RvE2, and RvE3, have roles in the resolution of inflammation as anti-inflammatory activities. To investigate the roles of each RvE in the resolution of inflammation, timing of interleukin (IL)- 10 release and IL-10 receptor expressions, and phagocytosis evoked by each RvE in differentiated human monocytes, macrophage-like U937 cells were examined. Here, we show that RvEs enhance the expression of IL-10, and IL-10 receptor-mediated signaling pathways and IL-10-mediated-signaling-independent resolution of inflammatory effects by activating the phagocytotic function. Thus, RvE2 mainly evoked an IL-10-mediated anti-inflammatory function, whereas RvE3 principally activated phagocytotic activity of macrophages, which may be involved in tissue repair. On the other hand, RvE1 showed both functions, although not prominent but rather acting as a relief mediator that takes over the RvE2 function and passes over to the RvE3 function. Therefore, each RvE may act as an important role/stage-specific mediator in a coordinated manner with other RvEs in the processes of the resolution of inflammation.
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Affiliation(s)
- Ayaka Hamaguchi
- Department of Pharmacology for Life Sciences, Graduate School of Pharmaceutical Sciences & Graduate School of Biomedical Sciences, Tokushima University, Tokushima 770-8505, Japan
| | - Hayato Fukuda
- Laboratory of Organic Chemistry for Drug Development, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Koichi Fujiwara
- Laboratory of Organic Chemistry for Drug Development, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
| | - Tomofumi Harada
- Department of Pharmacology for Life Sciences, Graduate School of Pharmaceutical Sciences & Graduate School of Biomedical Sciences, Tokushima University, Tokushima 770-8505, Japan
| | - Keijo Fukushima
- Department of Pharmacology for Life Sciences, Graduate School of Pharmaceutical Sciences & Graduate School of Biomedical Sciences, Tokushima University, Tokushima 770-8505, Japan
| | - Satoshi Shuto
- Laboratory of Organic Chemistry for Drug Development, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
| | - Hiromichi Fujino
- Department of Pharmacology for Life Sciences, Graduate School of Pharmaceutical Sciences & Graduate School of Biomedical Sciences, Tokushima University, Tokushima 770-8505, Japan.
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4
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Gaete PV, Nieves-Barreto LD, Guatibonza-García V, Losada-Barragán M, Vargas-Sánchez K, Mendivil CO. Medium-chain fatty acids modify macrophage expression of metabolic and inflammatory genes in a PPAR β/δ-dependent manner. Sci Rep 2023; 13:11573. [PMID: 37463952 DOI: 10.1038/s41598-023-38700-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/13/2023] [Indexed: 07/20/2023] Open
Abstract
There is great interest on medium chain fatty acids (MCFA) for cardiovascular health. We explored the effects of MCFA on the expression of lipid metabolism and inflammatory genes in macrophages, and the extent to which they were mediated by the nuclear receptor peroxisome proliferator-activated receptor beta/delta (PPAR β/δ). J774A.1 murine macrophages were exposed to octanoate or decanoate as MCFA, a long-chain fatty acid control (palmitate), or the PPAR β/δ agonist GW501516, with or without lipopolysaccharide (LPS) stimulation, and with or without an siRNA-induced knockdown of PPAR β/δ. MCFA increased the expression of Plin2, encoding a lipid-droplet associated protein with anti-inflammatory effects in macrophages, in a partially PPAR β/δ-dependent manner. Both MCFA stimulated expression of the cholesterol efflux pump ABCA1, more pronouncedly under LPS stimulation and in the absence of PPAR β/δ. Octanoate stimulated the expression of Pltp, encoding a phospholipid transfer protein that aids ABCA1 in cellular lipid efflux. Only palmitate increased expression of the proinflammatory genes Il6, Tnf, Nos2 and Mmp9. Non-stimulated macrophages exposed to MCFA showed less internalization of fluorescently labeled lipoproteins. MCFA influenced the transcriptional responses of macrophages favoring cholesterol efflux and a less inflammatory response compared to palmitate. These effects were partially mediated by PPAR β/δ.
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Affiliation(s)
- Paula V Gaete
- Department of Physiological Sciences, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Luz D Nieves-Barreto
- School of Medicine, Universidad de los Andes, Carrera 7 No 116-05, Of 413, Bogotá, Colombia
| | | | - Mónica Losada-Barragán
- Biología Celular y Funcional e Ingeniería de Moléculas, Departamento de Biología, Universidad Antonio Nariño, Bogotá, Colombia
| | - Karina Vargas-Sánchez
- School of Medicine, Universidad de los Andes, Carrera 7 No 116-05, Of 413, Bogotá, Colombia
| | - Carlos O Mendivil
- School of Medicine, Universidad de los Andes, Carrera 7 No 116-05, Of 413, Bogotá, Colombia.
- Section of Endocrinology, Department of Internal Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia.
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5
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Gatmaitan JG, Lee JH. Challenges and Future Trends in Atopic Dermatitis. Int J Mol Sci 2023; 24:11380. [PMID: 37511138 PMCID: PMC10380015 DOI: 10.3390/ijms241411380] [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: 06/19/2023] [Revised: 07/06/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Atopic dermatitis represents a complex and multidimensional interaction that represents potential fields of preventive and therapeutic management. In addition to the treatment armamentarium available for atopic dermatitis, novel drugs targeting significant molecular pathways in atopic dermatitis biologics and small molecules are also being developed given the condition's complex pathophysiology. While most of the patients are expecting better efficacy and long-term control, the response to these drugs would still depend on numerous factors such as complex genotype, diverse environmental triggers and microbiome-derived signals, and, most importantly, dynamic immune responses. This review article highlights the challenges and the recently developed pharmacological agents in atopic dermatitis based on the molecular pathogenesis of this condition, creating a specific therapeutic approach toward a more personalized medicine.
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Affiliation(s)
- Julius Garcia Gatmaitan
- Department of Dermatology, Seoul St. Mary's Hospital, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea
- Gatmaitan Medical and Skin Center, Baliuag 3006, Bulacan, Philippines
- Skines Aesthetic and Laser Center, Quezon City 1104, Metro Manila, Philippines
| | - Ji Hyun Lee
- Department of Dermatology, Seoul St. Mary's Hospital, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul 06591, Republic of Korea
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Phuengmaung P, Khiewkamrop P, Makjaroen J, Issara-Amphorn J, Boonmee A, Benjaskulluecha S, Ritprajak P, Nita-Lazar A, Palaga T, Hirankarn N, Leelahavanichkul A. Less Severe Sepsis in Cecal Ligation and Puncture Models with and without Lipopolysaccharide in Mice with Conditional Ezh2-Deleted Macrophages (LysM-Cre System). Int J Mol Sci 2023; 24:ijms24108517. [PMID: 37239864 DOI: 10.3390/ijms24108517] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/02/2023] [Accepted: 05/07/2023] [Indexed: 05/28/2023] Open
Abstract
Despite a previous report on less inflammatory responses in mice with an absence of the enhancer of zeste homologue 2 (Ezh2), a histone lysine methyltransferase of epigenetic regulation, using a lipopolysaccharide (LPS) injection model, proteomic analysis and cecal ligation and puncture (CLP), a sepsis model that more resembles human conditions was devised. As such, analysis of cellular and secreted protein (proteome and secretome) after a single LPS activation and LPS tolerance in macrophages from Ezh2 null (Ezh2flox/flox; LysM-Crecre/-) mice (Ezh2 null) and the littermate control mice (Ezh2fl/fl; LysM-Cre-/-) (Ezh2 control) compared with the unstimulated cells from each group indicated fewer activities in Ezh2 null macrophages, especially by the volcano plot analysis. Indeed, supernatant IL-1β and expression of genes in pro-inflammatory M1 macrophage polarization (IL-1β and iNOS), TNF-α, and NF-κB (a transcription factor) were lower in Ezh2 null macrophages compared with the control. In LPS tolerance, downregulated NF-κB compared with the control was also demonstrated in Ezh2 null cells. In CLP sepsis mice, those with CLP alone and CLP at 2 days after twice receiving LPS injection, representing sepsis and sepsis after endotoxemia, respectively, symptoms were less severe in Ezh2 null mice, as indicated by survival analysis and other biomarkers. However, the Ezh2 inhibitor improved survival only in CLP, but not LPS with CLP. In conclusion, an absence of Ezh2 in macrophages resulted in less severe sepsis, and the use of an Ezh2 inhibitor might be beneficial in sepsis.
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Affiliation(s)
- Pornpimol Phuengmaung
- Center of Excellence in Translational Research in Inflammation and Immunology (CETRII), Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Phuriwat Khiewkamrop
- Center of Excellence in Immunology and Immune-Mediated Diseases, Chulalongkorn University, Bangkok 10330, Thailand
- Medical Microbiology, Interdisciplinary and International Program, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand
| | - Jiradej Makjaroen
- Center of Excellence in Systems Biology, Research Affairs, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Jiraphorn Issara-Amphorn
- Functional Cellular Networks Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Atsadang Boonmee
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Salisa Benjaskulluecha
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Patcharee Ritprajak
- Research Unit in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Department of Microbiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Aleksandra Nita-Lazar
- Functional Cellular Networks Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tanapat Palaga
- Center of Excellence in Immunology and Immune-Mediated Diseases, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nattiya Hirankarn
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Immunology and Immune-Mediated Diseases, Chulalongkorn University, Bangkok 10330, Thailand
| | - Asada Leelahavanichkul
- Center of Excellence in Translational Research in Inflammation and Immunology (CETRII), Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
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7
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The Regulatory Roles of Ezh2 in Response to Lipopolysaccharide (LPS) in Macrophages and Mice with Conditional Ezh2 Deletion with LysM-Cre System. Int J Mol Sci 2023; 24:ijms24065363. [PMID: 36982437 PMCID: PMC10049283 DOI: 10.3390/ijms24065363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
The responses of macrophages to lipopolysaccharide (LPS) might determine the direction of clinical manifestations of sepsis, which is the immune response against severe infection. Meanwhile, the enhancer of zeste homologue 2 (Ezh2), a histone lysine methyltransferase of epigenetic regulation, might interfere with LPS response. Transcriptomic analysis on LPS-activated wild-type macrophages demonstrated an alteration of several epigenetic enzymes. Although the Ezh2-silencing macrophages (RAW264.7), using small interfering RNA (siRNA), indicated a non-different response to the control cells after a single LPS stimulation, the Ezh2-reducing cells demonstrated a less severe LPS tolerance, after two LPS stimulations, as determined by the higher supernatant TNF-α. With a single LPS stimulation, Ezh2 null (Ezh2flox/flox; LysM-Crecre/−) macrophages demonstrated lower supernatant TNF-α than Ezh2 control (Ezh2fl/fl; LysM-Cre−/−), perhaps due to an upregulation of Socs3, which is a suppressor of cytokine signaling 3, due to the loss of the Ezh2 gene. In LPS tolerance, Ezh2 null macrophages indicated higher supernatant TNF-α and IL-6 than the control, supporting an impact of the loss of the Ezh2 inhibitory gene. In parallel, Ezh2 null mice demonstrated lower serum TNF-α and IL-6 than the control mice after an LPS injection, indicating a less severe LPS-induced hyper-inflammation in Ezh2 null mice. On the other hand, there were similar serum cytokines after LPS tolerance and the non-reduction of serum cytokines after the second dose of LPS, indicating less severe LPS tolerance in Ezh2 null mice compared with control mice. In conclusion, an absence of Ezh2 in macrophages resulted in less severe LPS-induced inflammation, as indicated by low serum cytokines, with less severe LPS tolerance, as demonstrated by higher cytokine production, partly through the upregulated Socs3.
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Ahn YJ, Lim JW, Kim H. Lutein inhibits IL‑6 expression by inducing PPAR‑γ activation and SOCS3 expression in cerulein‑stimulated pancreatic acinar cells. Mol Med Rep 2022; 26:302. [PMID: 35946453 PMCID: PMC9434989 DOI: 10.3892/mmr.2022.12818] [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: 06/07/2022] [Accepted: 07/29/2022] [Indexed: 12/02/2022] Open
Abstract
Acute pancreatitis is a severe inflammatory disease of the pancreas. In experimental acute pancreatitis, cerulein induces the expression of interleukin-6 (IL-6) by activating Janus kinase (JAK) 2/signal transducer and activator of transcription (STAT) 3 in pancreatic acinar cells. Ligands of peroxisome proliferator activated receptor-γ (PPAR-γ) and suppressor of cytokine signaling (SOCS) 3 inhibit IL-6 expression by suppressing JAK2/STAT3 in cerulein-stimulated pancreatic acinar AR42J cells. Lutein, an oxygenated carotenoid, upregulates and activates PPAR-γ to regulate inflammation in a renal injury model. The present study aimed to determine whether lutein activated PPAR-γ and induced SOCS3 expression in unstimulated AR42J cells, and whether lutein inhibited activation of JAK2/STAT3 and IL-6 expression via activation of PPAR-γ and SOCS3 expression in cerulein-stimulated AR42J cells. The anti-inflammatory mechanism of lutein was determined using reverse transcription-quantitative PCR, western blot analysis and enzyme-linked immunosorbent assay in AR42J cells stimulated with or without cerulein. In another experiment, cells were treated with lutein and the PPAR-γ antagonist GW9662 or the PPAR-γ agonist troglitazone prior to cerulein stimulation to determine the involvement of PPAR-γ activation. The results indicated that lutein increased PPAR-γ and SOCS3 levels in unstimulated cells. Cerulein increased phospho-specific forms of JAK2 and STAT3, and mRNA and protein expression of IL-6, but decreased SOCS3 levels in AR42J cells. Cerulein-induced alterations were suppressed by lutein or troglitazone. GW9662 alleviated the inhibitory effect of lutein on JAK2/STAT3 activation and IL-6 expression in cerulein-stimulated cells. In conclusion, lutein inhibited the activation of JAK2/STAT3 and reduced IL-6 levels via PPAR-γ-mediated SOCS3 expression in pancreatic acinar cells stimulated with cerulein.
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Affiliation(s)
- Yu Jin Ahn
- Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 03722, Republic of Korea
| | - Joo Weon Lim
- Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 03722, Republic of Korea
| | - Hyeyong Kim
- Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul 03722, Republic of Korea
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Poole LG, Kopec AK, Flick MJ, Luyendyk JP. Cross-linking by tissue transglutaminase-2 alters fibrinogen-directed macrophage proinflammatory activity. J Thromb Haemost 2022; 20:1182-1192. [PMID: 35158413 PMCID: PMC9035112 DOI: 10.1111/jth.15670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/21/2022] [Accepted: 02/07/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND The blood coagulation factor fibrin(ogen) can modulate inflammation by altering leukocyte activity. Analyses of fibrin(ogen)-mediated proinflammatory activity have largely focused on leukocyte integrin binding activity revealed by conversion of fibrinogen to a stabilized fibrin polymer by blood coagulation enzymes. In addition to coagulation enzymes, fibrinogen is a substrate for tissue transglutaminase-2 (TG2), a widely expressed enzyme that produces unique fibrinogen Aα-γ chain cross-linked products. OBJECTIVES We tested the hypothesis that TG2 dependent cross-linking alters the proinflammatory activity of surface-adhered fibrinogen. METHODS Mouse bone marrow-derived macrophages (BMDMs) were cultured on tissue culture plates coated with fibrinogen or TG2-cross-linked fibrinogen (10 µg/ml) and then stimulated with lipopolysaccharide (LPS, 1 ng/ml) or vehicle for various times. RESULTS In the absence of LPS stimulation, TG2-cross-linked fibrin(ogen) enhanced inflammatory gene induction (e.g., Tnfα) compared with unmodified fibrinogen. LPS stimulation induced mitogen-activated protein kinase phosphorylation, IκBα degradation, and expression of proinflammatory cytokines (e.g., tumor necrosis factor α) within 60 min. This initial cellular activation was unaffected by unmodified or TG2-cross-linked fibrinogen. In contrast, LPS induction of interleukin-10 mRNA and protein and STAT3 phosphorylation was selectively attenuated by TG2-cross-linked fibrinogen, which was associated with enhanced proinflammatory cytokine secretion by LPS-stimulated BMDMs at later time points (6 and 24 h). CONCLUSIONS The results indicate that atypical cross-linking by TG2 imparts unique proinflammatory activity to surface-adhered fibrinogen. The results suggest a novel coagulation-independent mechanism controlling fibrinogen-directed macrophage activation.
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Affiliation(s)
- Lauren G. Poole
- Department of Pathobiology & Diagnostic Investigation, Michigan State University, East Lansing, Michigan
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan
| | - Anna K. Kopec
- Department of Pathobiology & Diagnostic Investigation, Michigan State University, East Lansing, Michigan
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan
| | - Matthew J. Flick
- Department of Pathology and Laboratory Medicine, UNC Blood Research Center, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - James P. Luyendyk
- Department of Pathobiology & Diagnostic Investigation, Michigan State University, East Lansing, Michigan
- Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan
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10
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Singh SB, Coffman CN, Carroll-Portillo A, Varga MG, Lin HC. Notch Signaling Pathway Is Activated by Sulfate Reducing Bacteria. Front Cell Infect Microbiol 2021; 11:695299. [PMID: 34336718 PMCID: PMC8319767 DOI: 10.3389/fcimb.2021.695299] [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: 04/14/2021] [Accepted: 06/28/2021] [Indexed: 12/05/2022] Open
Abstract
Sulfate Reducing Bacteria (SRB), usually rare residents of the gut, are often found in increased numbers (called a SRB bloom) in inflammatory conditions such as Inflammatory Bowel Disease (IBD), pouchitis, and periodontitis. However, the underlying mechanisms of this association remain largely unknown. Notch signaling, a conserved cell-cell communication pathway, is usually involved in tissue development and differentiation. Dysregulated Notch signaling is observed in inflammatory conditions such as IBD. Lipolysaccharide and pathogens also activate Notch pathway in macrophages. In this study, we tested whether Desulfovibrio, the most dominant SRB genus in the gut, may activate Notch signaling. RAW 264.7 macrophages were infected with Desulfovibrio vulgaris (DSV) and analyzed for the expression of Notch signaling pathway-related proteins. We found that DSV induced protein expression of Notch1 receptor, Notch intracellular domain (NICD) and p21, a downstream Notch target, in a dose-and time-dependent manner. DSV also induced the expression of pro-IL1β, a precursor of IL-1β, and SOCS3, a regulator of cytokine signaling. The gamma secretase inhibitor DAPT or Notch siRNA dampened DSV-induced Notch-related protein expression as well the expression of pro-IL1β and SOCS3. Induction of Notch-related proteins by DSV was not affected by TLR4 -IN -C34(C34), a TLR4 receptor antagonist. Additionally, cell-free supernatant of DSV-infected macrophages induced NICD expression in uninfected macrophages. DSV also activated Notch pathway in the human epithelial cell line HCT116 and in mouse small intestine. Thus, our study uncovers a novel mechanism by which SRB interact with host cells by activating Notch signaling pathway. Our study lays a framework for examining whether the Notch pathway induced by SRB contributes to inflammation in conditions associated with SRB bloom and whether it can be targeted as a therapeutic approach to treat these conditions.
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Affiliation(s)
- Sudha B Singh
- Biomedical Research Institute of New Mexico, New Mexico VA Health Care System, Albuquerque, NM, United States
| | - Cristina N Coffman
- Biomedical Research Institute of New Mexico, New Mexico VA Health Care System, Albuquerque, NM, United States
| | - Amanda Carroll-Portillo
- Division of Gastroenterology and Hepatology, Department of Medicine, University of New Mexico, Albuquerque, NM, United States
| | - Matthew G Varga
- Biomedical Research Institute of New Mexico, New Mexico VA Health Care System, Albuquerque, NM, United States
| | - Henry C Lin
- Division of Gastroenterology and Hepatology, Department of Medicine, University of New Mexico, Albuquerque, NM, United States.,Medicine Service, New Mexico VA Health Care System, Albuquerque, NM, United States
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11
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Feng C, Li L, Li Q, Switzer K, Liu M, Han S, Zheng B. Docosahexaenoic acid ameliorates autoimmune inflammation by activating GPR120 signaling pathway in dendritic cells. Int Immunopharmacol 2021; 97:107698. [PMID: 33932699 DOI: 10.1016/j.intimp.2021.107698] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/13/2021] [Accepted: 04/18/2021] [Indexed: 12/19/2022]
Abstract
Although the phenomenon that omega-3 polyunsaturated fatty acids (n-3 PUFAs) shows to have a beneficial effect in patients suffering from multiple sclerosis (MS) and other autoimmune diseases has been empirically well-documented, the molecular mechanisms that underline the anti-inflammatory effects of n-3 PUFAs are yet to be understood. In experimental autoimmune encephalomyelitis (EAE), a model for MS, we show that one of the underlying mechanisms by which dietary docosahexaenoic acid (DHA) exerts its anti-inflammatory effect is regulating the functional activities of dendritic cells (DCs). In DHA-treated EAE mice, DCs acquire a regulatory phenotype characterized by low expression of co-stimulatory molecules, decreased production of pro-inflammatory cytokines, and enhanced capability of regulatory T-cell induction. The effect of DHA on DCs is mediated by the lipid-sensing receptor, G protein-coupled receptor 120 (GPR120). A GPR120-specific small-molecule agonist could ameliorate the autoimmune inflammation by regulating DCs, while silencing GPR120 in DCs strongly increased the immunogenicity of DCs. Stimulation of GPR120 induces suppressor of cytokine signaling 3 (SOCS3) expression and down-regulates signal transducer and activator of transcription 3 (STAT3) phosphorylation, explaining the molecular mechanism for regulatory DC induction.
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Affiliation(s)
- Chunlei Feng
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Lingyun Li
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Qing Li
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Kirsten Switzer
- Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
| | - Mingyao Liu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Shuhua Han
- Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States
| | - Biao Zheng
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China; Department of Pathology & Immunology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, United States.
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12
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Yu JA, Lee JY, Kim TY, Kang H, Lee SY, Mitiku H, Park J, Lee YH, Chang HB, Lee BH, Lee K, Apostolidis E, Kwon YI. Immune Modulatory Activities of Arginyl-Fructose (AF) and AF-Enriched Natural Products in In-Vitro and In-Vivo Animal Models. Molecules 2021; 26:molecules26082251. [PMID: 33924652 PMCID: PMC8070598 DOI: 10.3390/molecules26082251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/06/2021] [Accepted: 04/11/2021] [Indexed: 11/16/2022] Open
Abstract
The immune system plays an important role in maintaining body homeostasis. Recent studies on the immune-enhancing effects of ginseng saponins have revealed more diverse mechanisms of action. Maillard reaction that occurs during the manufacturing processes of red ginseng produces a large amount of Amadori rearrangement compounds (ARCs), such as arginyl-fructose (AF). The antioxidant and anti-hyperglycemic effects of AF have been reported. However, the possible immune enhancing effects of non-saponin ginseng compounds, such as AF, have not been investigated. In this study the effects of AF and AF-enriched natural product (Ginofos, GF) on proliferation of normal mouse splenocytes were evaluated in vitro and male BALB/c mice models. The proliferation of splenocytes treated with mitogens (concanavalin A, lipopolysaccharide) were further increased by addition of AF (p < 0.01) or GF (p < 0.01), in a dose dependent manner. After the 10 days of oral administration of compounds, changes in weights of spleen and thymus, serum immunoglobulin, and expression of cytokines were measured as biomarkers of immune-enhancing potential in male BALB/c mice model. The AF or GF treated groups had higher weights of the thymus (0.94 ± 0.25 and 0.86 ± 0.18, p < 0.05, respectively) than that of cyclophosphamide treated group (0.59 ± 0.18). This result indicates that AF or AF-enriched extract (GF) increased humoral immunity against CY-induced immunosuppression. In addition, immunoglobulin contents and expression of cytokines including IgM (p < 0.01), IgG (p < 0.05), IL-2 (p < 0.01), IL-4 (p < 0.01), IL-6 (p < 0.01), and IFN-γ (p < 0.05) were also significantly increased by supplementation of AF or GF. These results indicate that AF has immune enhancing effects by activation of adaptive immunity via increase of expression of immunoglobulins and cytokines such as IgM, IgG, IL-2, IL-4, IL-6 and thereby proliferating the weight of thymus. Our findings provide a pharmacological rationale for AF-enriched natural products such as ginseng and red ginseng that can possibly have immune-enhancement potential and should be further evaluated.
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Affiliation(s)
- Jin-A Yu
- Department of Food and Nutrition, Hannam University, Daejeon 34054, Korea; (J.-A.Y.); (J.-Y.L.); (T.Y.K.); (H.K.); (S.-Y.L.); (H.M.)
| | - Jung-Yun Lee
- Department of Food and Nutrition, Hannam University, Daejeon 34054, Korea; (J.-A.Y.); (J.-Y.L.); (T.Y.K.); (H.K.); (S.-Y.L.); (H.M.)
| | - Tae Yang Kim
- Department of Food and Nutrition, Hannam University, Daejeon 34054, Korea; (J.-A.Y.); (J.-Y.L.); (T.Y.K.); (H.K.); (S.-Y.L.); (H.M.)
| | - Hanna Kang
- Department of Food and Nutrition, Hannam University, Daejeon 34054, Korea; (J.-A.Y.); (J.-Y.L.); (T.Y.K.); (H.K.); (S.-Y.L.); (H.M.)
| | - Su-Young Lee
- Department of Food and Nutrition, Hannam University, Daejeon 34054, Korea; (J.-A.Y.); (J.-Y.L.); (T.Y.K.); (H.K.); (S.-Y.L.); (H.M.)
| | - Haimanot Mitiku
- Department of Food and Nutrition, Hannam University, Daejeon 34054, Korea; (J.-A.Y.); (J.-Y.L.); (T.Y.K.); (H.K.); (S.-Y.L.); (H.M.)
| | - Joonheum Park
- Institute of Functional Foods, EVERIT Co. Ltd., Daejeon 63010, Korea; (J.P.); (Y.H.L.)
| | - Young Hwan Lee
- Institute of Functional Foods, EVERIT Co. Ltd., Daejeon 63010, Korea; (J.P.); (Y.H.L.)
| | - Hung-Bae Chang
- Department of Bio Quality Control, Korea Bio Polytechnic, Chungnam 32943, Korea;
| | - Byung Ha Lee
- Department of Molecular Genetics and Center for Applied Plant Science, Ohio State University, Columbus, OH 43210, USA;
| | - Kichoon Lee
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA;
| | - Emmanouil Apostolidis
- Department of Chemistry and Food Science, Framingham State University, Framingham, MA 01701, USA
- Correspondence: (E.A.); (Y.-I.K.); Tel.: +1-508-626-4777 (E.A.); +82-42-629-8790 (Y.-I.K.)
| | - Young-In Kwon
- Department of Food and Nutrition, Hannam University, Daejeon 34054, Korea; (J.-A.Y.); (J.-Y.L.); (T.Y.K.); (H.K.); (S.-Y.L.); (H.M.)
- Correspondence: (E.A.); (Y.-I.K.); Tel.: +1-508-626-4777 (E.A.); +82-42-629-8790 (Y.-I.K.)
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13
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Park J, Kim JY, Kim YR, Huang M, Chang JY, Sim AY, Jung H, Lee WT, Hyun YM, Lee JE. Reparative System Arising from CCR2(+) Monocyte Conversion Attenuates Neuroinflammation Following Ischemic Stroke. Transl Stroke Res 2021; 12:879-893. [PMID: 33409730 PMCID: PMC8421302 DOI: 10.1007/s12975-020-00878-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/20/2020] [Accepted: 11/16/2020] [Indexed: 01/22/2023]
Abstract
Monocytes recruitment from the blood to inflamed tissues following ischemic stroke is an important immune response to wound healing and tissue repair. Mouse monocytes can be endogenously divided into two distinct populations: pro-inflammatory or classical monocytes that express CCR2highCX3CR1low and circulate in blood, and anti-inflammatory or non-classical monocytes that express CCR2lowCX3CR1high and patrol locally. In this study of transgenic mice with functional CX3CR1GFP/+ or CX3CR1GFP/+-CCR2RFP/+, we found that CCR2highCX3CR1low monocytes recruited to the injured brain were cytokine-dependently converted into CCR2lowCX3CR1high macrophages, especially under the influence of IL-4 and IL-13, thereby attenuating the neuroinflammation following sterile ischemic stroke. The overall data suggest that (1) the regulation of monocyte-switching is one of the ultimate reparative strategies in ischemic stroke, and (2) the adaptation of monocytes in a locally inflamed milieu is vital to alleviating the effects of ischemic stroke through innate immunity.
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Affiliation(s)
- Joohyun Park
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Youl Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yu Rim Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Meiying Huang
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji Young Chang
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - A Young Sim
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hosung Jung
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea.,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Won Taek Lee
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young-Min Hyun
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea. .,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Jong Eun Lee
- Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea. .,Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea. .,Brain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.
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14
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Azeem M, Kader H, Kerstan A, Hetta HF, Serfling E, Goebeler M, Muhammad K. Intricate Relationship Between Adaptive and Innate Immune System in Allergic Contact Dermatitis. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2020; 93:699-709. [PMID: 33380932 PMCID: PMC7757059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Allergic contact dermatitis (ACD) is a complex immunological allergic disease characterized by the interplay between the innate and adaptive immune system. Initially, the role of the innate immune system was believed to be confined to the initial sensitization phase, while adaptive immune reactions were linked with the advanced elicitation phase. However, recent data predicted a comparatively mixed and interdependent role of both immune systems throughout the disease progression. Therefore, the actual mechanisms of disease progression are more complex and interlinked. The aim of this review is to combine such findings that enhanced our understanding of the pathomechanisms of ACD. Here, we focused on the main cell types from both immune domains, which are involved in ACD, such as CD4+ and CD8+ T cells, B cells, neutrophils, and innate lymphoid cells (ILCs). Such insights can be useful for devising future therapeutic interventions for ACD.
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Affiliation(s)
- Muhammad Azeem
- Department of Molecular Pathology, Institute of
Pathology, University of Würzburg, Würzburg, Germany
| | - Hidaya Kader
- Department of Biology, College of Science, United Arab
Emirates University, Al Ain, United Arab Emirates
| | - Andreas Kerstan
- Department of Dermatology, Venereology and Allergology,
University Hospital Würzburg, Würzburg, Germany
| | - Helal F. Hetta
- Department of Medical Microbiology and Immunology,
Faculty of Medicine, Assiut University, Assiut, Egypt
- Department of Internal Medicine, University of
Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Edgar Serfling
- Department of Molecular Pathology, Institute of
Pathology, University of Würzburg, Würzburg, Germany
| | - Matthias Goebeler
- Department of Dermatology, Venereology and Allergology,
University Hospital Würzburg, Würzburg, Germany
| | - Khalid Muhammad
- Department of Biology, College of Science, United Arab
Emirates University, Al Ain, United Arab Emirates
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15
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Therapeutic Potential of Porcine Liver Decomposition Product: New Insights and Perspectives for Microglia-Mediated Neuroinflammation in Neurodegenerative Diseases. Biomedicines 2020; 8:biomedicines8110446. [PMID: 33105637 PMCID: PMC7690401 DOI: 10.3390/biomedicines8110446] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 12/23/2022] Open
Abstract
It is widely accepted that microglia-mediated inflammation contributes to the progression of neurodegenerative diseases; however, the precise mechanisms through which these cells contribute remain to be elucidated. Microglia, as the primary immune effector cells of the brain, play key roles in maintaining central nervous system (CNS) homeostasis. Microglia are located throughout the brain and spinal cord and may account for up to 15% of all cells in the brain. Activated microglia express pro-inflammatory cytokines that act on the surrounding brain and spinal cord. Microglia may also play a detrimental effect on nerve cells when they gain a chronic inflammatory function and promote neuropathologies. A key feature of microglia is its rapid morphological change upon activation, characterized by the retraction of numerous fine processes and the gradual acquisition of amoeba-like shapes. These morphological changes are also accompanied by the expression and secretion of inflammatory molecules, including cytokines, chemokines, and lipid mediators that promote systemic inflammation during neurodegeneration. This may be considered a protective response intended to limit further injury and initiate repair processes. We previously reported that porcine liver decomposition product (PLDP) induces a significant increase in the Hasegawa’s Dementia Scale-Revised (HDS-R) score and the Wechsler Memory Scale (WMS) in a randomized, double-blind, placebo-controlled study in healthy humans. In addition, the oral administration of porcine liver decomposition product enhanced visual memory and delayed recall in healthy adults. We believe that PLDP is a functional food that aids cognitive function. In this review, we provide a critical assessment of recent reports of lysophospholipids derived from PLDP, a rich source of phospholipids. We also highlight some recent findings regarding bidirectional interactions between lysophospholipids and microglia and age-related neurodegenerative diseases such as dementia and Alzheimer’s disease.
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16
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Jamal A, Husein A, Bihari C, Kumar V. Ubiquitin ligase TRUSS augments the expression of interleukin-10 via proteasomal processing of NF-κB1/p105 to NF-κB/p50. Cell Signal 2020; 75:109766. [PMID: 32889079 DOI: 10.1016/j.cellsig.2020.109766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 10/23/2022]
Abstract
The NF-κB/Rel family of transcription factors that play critical roles in a variety of cellular processes. Their production in the cell and physiological activation are tightly regulated. The proteasomal processing of inactive NF-κB1/p105 to active p50, with an anti-inflammatory role, is not well characterized. Here we show that ubiquitin ligase TRUSS is a mediator of transcriptional activation of anti-inflammatory cytokine IL-10 gene. Enforced expression of TRUSS led to enhanced IL-10 expression that could be inhibited in the presence of chemical inhibitors of NF-κB [BAY11-7082] and PI3K/Akt [LY249002] or after p65 overexpression. p50 was actively recruited on IL10 promoter in the presence of TRUSS but competed by p65 for binding. TRUSS facilitated the ubiquitination of NF-κB1/p105 and promoted its proteolytic processing to generate excess of p50. Our immune-histochemical studies confirmed enhanced expression of p105/p50 in the human HCC tumors. Further, the hepatic tumors of HCC patient as well as transgenic mice showed decreased levels of p50 as well as TRUSS and accumulation of p105. Thus, enhanced expression of IL-10 gene in the presence of TRUSS and regulation of NF-κB1/p105 processing could be an important regulatory mechanism for inflammatory response and tumorgenic transformation.
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Affiliation(s)
- Azfar Jamal
- Virology Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Atahar Husein
- Department of Biotechnology, Jamia Millia Islamia, New Delhi 110025, India
| | - Chhagan Bihari
- Department of Pathology, Institute of Liver and Biliary Sciences, New Delhi 110070, India
| | - Vijay Kumar
- Virology Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110067, India; Department of Molecular & Cellular Medicine, Institute of Liver and Biliary Sciences, New Delhi 110070, India.
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17
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Porro C, Cianciulli A, Panaro MA. The Regulatory Role of IL-10 in Neurodegenerative Diseases. Biomolecules 2020; 10:biom10071017. [PMID: 32659950 PMCID: PMC7407888 DOI: 10.3390/biom10071017] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/01/2020] [Accepted: 07/07/2020] [Indexed: 02/06/2023] Open
Abstract
IL-10, an immunosuppressive cytokine, is considered an important anti-inflammatory modulator of glial activation, preventing inflammation-mediated neuronal degeneration under pathological conditions. In this narrative review, we summarize recent insights about the role of IL-10 in the neurodegeneration associated with neuroinflammation, in diseases such as Multiple Sclerosis, Traumatic Brain Injury, Amyotrophic lateral sclerosis, Alzheimer’s Disease, and Parkinson’s Disease, focusing on the contribution of this cytokine not only in terms of protective action, but also as possibly responsible for clinical worsening. The knowledge of this double face of the same coin, regarding the biological role of the IL-10, could aid the development of targeted therapies useful for limiting neurodegenerative processes.
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Affiliation(s)
- Chiara Porro
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy;
| | - Antonia Cianciulli
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, 70125 Bari, Italy;
| | - Maria Antonietta Panaro
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, 70125 Bari, Italy;
- Correspondence:
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18
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Suriguga S, Luangmonkong T, Mutsaers HAM, Groothuis GMM, Olinga P. Host microbiota dictates the proinflammatory impact of LPS in the murine liver. Toxicol In Vitro 2020; 67:104920. [PMID: 32590029 DOI: 10.1016/j.tiv.2020.104920] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/04/2020] [Accepted: 06/17/2020] [Indexed: 02/07/2023]
Abstract
Gut microbiota can impact liver disease development via the gut-liver axis. Liver inflammation is a shared pathological event in various liver diseases and gut microbiota might influence this pathological process. In this study, we studied the influence of gut microbiota on the inflammatory response of the liver to lipopolysaccharide (LPS). The inflammatory response to LPS (1-10 μg/ml) of livers of specific-pathogen-free (SPF) or germ-free (GF) mice was evaluated ex vivo, using precision-cut liver slices (PCLS). LPS induced a more pronounced inflammatory response in GF PCLS than in SPF PCLS. Baseline TNF-α gene expression was significantly higher in GF slices as compared to SPF slices. LPS treatment induced TNF-α, IL-1β, IL-6 and iNOS expression in both SPF and GF PCLS, but the increase was more intense in GF slices. The anti-inflammatory markers SOCS3 and IRAK-M gene expression was significantly higher in GF PCLS than SPF PCLS at 24h with 1 µg/ml LPS treatment, and IL-10 was not differently expressed in GF PCLS than SPF PCLS. In addition, TLR-4 mRNA, but not protein, at basal level was higher in GF slices than in SPF slices. Taken together, this study shows that, in mice, the host microbiota attenuates the pro-inflammatory impact of LPS in the liver, indicating a positive role of the gut microbiota on the immune homeostasis of the liver.
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Affiliation(s)
- Su Suriguga
- The State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China; Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands; Division of Pharmacokinetics, Toxicology and Targeting, Department of Pharmacy, University of Groningen, Groningen, the Netherlands
| | - Theerut Luangmonkong
- Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands; Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Henricus A M Mutsaers
- Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Geny M M Groothuis
- Division of Pharmacokinetics, Toxicology and Targeting, Department of Pharmacy, University of Groningen, Groningen, the Netherlands
| | - Peter Olinga
- Division of Pharmaceutical Technology and Biopharmacy, Department of Pharmacy, University of Groningen, Groningen, the Netherlands.
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19
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Abstract
Innate immune cells destroy pathogens within a transient organelle called the phagosome. When pathogen-associated molecular patterns (PAMPs) displayed on the pathogen are recognized by Toll-like receptors (TLRs) on the host cell, it activates inducible nitric oxide synthase (NOS2) which instantly fills the phagosome with nitric oxide (NO) to clear the pathogen. Selected pathogens avoid activating NOS2 by concealing key PAMPs from their cognate TLRs. Thus, the ability to map NOS2 activity triggered by PAMPs can reveal critical mechanisms underlying pathogen susceptibility. Here, we describe DNA-based probes that ratiometrically report phagosomal and endosomal NO, and can be molecularly programmed to display precise stoichiometries of any desired PAMP. By mapping phagosomal NO produced in microglia of live zebrafish brains, we found that single-stranded RNA of bacterial origin acts as a PAMP and activates NOS2 by engaging TLR-7. This technology can be applied to study PAMP-TLR interactions in diverse organisms.
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20
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Ihedioha O, Potter AA, Chen JM. Poor stimulation of bovine dendritic cells by Mycobacterium bovis culture supernatant and surface extract is associated with decreased activation of ERK and NF- κB and higher expression of SOCS1 and 3. Innate Immun 2020; 26:537-546. [PMID: 32513050 PMCID: PMC7491241 DOI: 10.1177/1753425920929759] [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: 11/21/2022] Open
Abstract
The cell envelope of pathogenic mycobacteria interfaces with the host. As such, the interaction of bacterial products localized at or released from the cell surface with the host’s immune system can determine the fate of the bacterium in its host. In this study, the effects of three different types of Mycobacterium bovis cell envelope fractions—purified protein derivative, total cell wall lipids and culture supernatant and surface extract—on bovine dendritic cells were assessed. We found that the culture supernatant and surface extract fraction induced little to no production of the pro-inflammatory cytokines TNF-α and IL-12 in bovine dendritic cells. Moreover, this muted response was associated with poor activation of ERK and NF-κB, both of which are critical for the pro-inflammatory response. Furthermore, culture supernatant and surface extract treatment increased the expression of suppressor of cytokine signaling 1 and 3, both of which are negative regulators of pro-inflammatory signaling, in bovine dendritic cells. These observations taken together suggest the M. bovis culture supernatant and surface extract fraction contain immunomodulatory molecules that may aid in M. bovis pathogenesis.
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Affiliation(s)
- Olivia Ihedioha
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada.,Vaccine and Infectious Disease Organization, International Vaccine Centre, University of Saskatchewan, Canada
| | - Andrew A Potter
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada.,Vaccine and Infectious Disease Organization, International Vaccine Centre, University of Saskatchewan, Canada
| | - Jeffrey M Chen
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada.,Vaccine and Infectious Disease Organization, International Vaccine Centre, University of Saskatchewan, Canada
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21
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Ipseiz N, Pickering RJ, Rosas M, Tyrrell VJ, Davies LC, Orr SJ, Czubala MA, Fathalla D, Robertson AA, Bryant CE, O'Donnell V, Taylor PR. Tissue-resident macrophages actively suppress IL-1beta release via a reactive prostanoid/IL-10 pathway. EMBO J 2020; 39:e103454. [PMID: 32484988 PMCID: PMC7360975 DOI: 10.15252/embj.2019103454] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 12/30/2022] Open
Abstract
The alarm cytokine interleukin‐1β (IL‐1β) is a potent activator of the inflammatory cascade following pathogen recognition. IL‐1β production typically requires two signals: first, priming by recognition of pathogen‐associated molecular patterns leads to the production of immature pro‐IL‐1β; subsequently, inflammasome activation by a secondary signal allows cleavage and maturation of IL‐1β from its pro‐form. However, despite the important role of IL‐1β in controlling local and systemic inflammation, its overall regulation is still not fully understood. Here we demonstrate that peritoneal tissue‐resident macrophages use an active inhibitory pathway, to suppress IL‐1β processing, which can otherwise occur in the absence of a second signal. Programming by the transcription factor Gata6 controls the expression of prostacyclin synthase, which is required for prostacyclin production after lipopolysaccharide stimulation and optimal induction of IL‐10. In the absence of secondary signal, IL‐10 potently inhibits IL‐1β processing, providing a previously unrecognized control of IL‐1β in tissue‐resident macrophages.
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Affiliation(s)
- Natacha Ipseiz
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Robert J Pickering
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Marcela Rosas
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Victoria J Tyrrell
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Luke C Davies
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Selinda J Orr
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK.,Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Science, Queen's University Belfast, Belfast, UK
| | - Magdalena A Czubala
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Dina Fathalla
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK.,UK Dementia Research Institute at Cardiff, Cardiff University, Cardiff, UK
| | - Avril Ab Robertson
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Qld, Australia
| | - Clare E Bryant
- Immunology Catalyst Programme, GSK, Cambridge, UK.,Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Valerie O'Donnell
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK
| | - Philip R Taylor
- Systems Immunity Research Institute, Heath Park, Cardiff University, Cardiff, UK.,UK Dementia Research Institute at Cardiff, Cardiff University, Cardiff, UK
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22
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Sun L, Girnary M, Wang L, Jiao Y, Zeng E, Mercer K, Zhang J, Marchesan JT, Yu N, Moss K, Lei YL, Offenbacher S, Zhang S. IL-10 Dampens an IL-17-Mediated Periodontitis-Associated Inflammatory Network. THE JOURNAL OF IMMUNOLOGY 2020; 204:2177-2191. [PMID: 32169848 DOI: 10.4049/jimmunol.1900532] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 02/04/2020] [Indexed: 02/05/2023]
Abstract
Emerging evidence suggests comprehensive immune profiling represents a highly promising, yet insufficiently tapped approach to identify potentially prognostic signatures for periodontitis. In this report, we agnostically identified a periodontitis-associated inflammatory expression network with multiple biomarkers identified within gingival crevicular fluid samples from study participants by applying principal component analysis. We identified an IL-17-dominated trait that is associated with periodontal disease and is inversely modified by the level of IL-10. IL-10 mitigated chemokine CXCL5 and CXCL1 expressions in IL-17-stimulated peripheral blood monocytic cells and peripheral blood monocytic cell-derived macrophages. Il10-deficient mice presented more bone loss, which was associated with more Il17 and IL-17-mediated chemokine and cytokine expression at the transcriptional levels in comparison with control wild-type mice in both the Porphyromonas gingivalis-induced experimental murine periodontitis and ligature-induced alveolar bone-loss models. The dampening effect of IL-10 on the excessive signaling of IL-17 appeared to be mediated by innate immune cells populations rather than by gingival epithelial cells, which are the major cell target for IL-17 signaling. Additionally, elevated IL-17 response in Il10-deficient mice specifically elicited an M1-skewing macrophage phenotype in the gingiva that was associated with the advanced bone loss in the ligature model. In summary, IL-17 dominated an inflammatory network characteristic of periodontitis, and IL-10 dampens this excessive IL-17-mediated periodontitis trait.
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Affiliation(s)
- Lu Sun
- Department of Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Center for Oral and Systemic Diseases, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Oral and Craniofacial Biomedicine Program, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Mustafa Girnary
- Department of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Lufei Wang
- Oral and Craniofacial Biomedicine Program, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Yizu Jiao
- Doctor of Dental Surgery Program, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Erliang Zeng
- Division of Biostatistics and Computational Biology, University of Iowa College of Dentistry, Iowa City, IA 52242
| | - Kyle Mercer
- Department of Periodontics, University of Iowa College of Dentistry, Iowa City, IA 52242.,Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242
| | - Jinmei Zhang
- Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242.,State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Julie T Marchesan
- Department of Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Center for Oral and Systemic Diseases, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Department of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Ning Yu
- Center for Clinical and Translational Research, The Forsyth Institute, Cambridge, MA 02142
| | - Kevin Moss
- Department of Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Center for Oral and Systemic Diseases, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Department of Dental Ecology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599; and
| | - Yu L Lei
- Department of Periodontics and Oral Medicine, Rogel Cancer Center, University of Michigan, Ann Arbor, MI 48109
| | - Steven Offenbacher
- Department of Periodontology, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.,Center for Oral and Systemic Diseases, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Shaoping Zhang
- Department of Periodontics, University of Iowa College of Dentistry, Iowa City, IA 52242; .,Iowa Institute for Oral Health Research, University of Iowa College of Dentistry, Iowa City, IA 52242
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23
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Amparo TR, Seibert JB, Mathias FAS, Vieira JFP, Soares RDDOA, Freitas KM, Cabral VAR, Brandão GC, Santos ODHD, de Souza GHB, Vieira PMDA. Anti-inflammatory activity of Protium spruceanum (Benth.) Engler is associated to immunomodulation and enzymes inhibition. JOURNAL OF ETHNOPHARMACOLOGY 2019; 241:112024. [PMID: 31181316 DOI: 10.1016/j.jep.2019.112024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 06/04/2019] [Accepted: 06/06/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Protium spruceanum (Burseraceae) is used in Brazilian traditional medicine as anti-inflammatory, but the factors involved in this activity were not yet characterized. AIMS OF THE STUDY analyze the aspects involved in the anti-inflammatory activity of polar fractions obtained from extracts of leaves and branches. MATERIALS AND METHODS Hydromethanolic fraction was obtained by liquid-liquid partition from crude ethanolic extract and its compounds were identified by LC-DAD-MS. Activity tests were performed using LPS + IFN-γ stimulated J774A.1 macrophages. Cytokines were evaluated by CBA kit, NO by Griess method, ROS by DCFH-DA, N-acetylglucosaminidase (NAG) activity by spectrophotometric method, matrix-metalloproteinase (MMP-9) activity by zymography, inducible nitric oxide synthase (iNOS) expression by immunofluorescence and cyclooxygenase (COX-2) expression by Western blot. RESULTS Fractions induced an increase of IL-6 and IL-10 which leads to the control of pro-inflammatory cytokines levels. The treatment with the fractions also reduced NO production at all concentrations tested in all evaluated periods. ROS production by the macrophages was inhibited by the treatment and the leaves fraction showed the best results with a lower concentration than that observed for the branches. The enzymes assays showed that leaves fraction inhibited NAG and MMP-9 activities, as well as, iNOS and COX-2 expression. These activities can be associated with the presence of procyanidin, catechin, rutin, quercitrin, isoquercitrin and kaempferol-3-O-rhamnoside, major compounds that were identified in the fraction. CONCLUSIONS Anti-inflammatory activity of P. spruceanum is associated to an immunomodulatory effect that leads to inhibition of ROS, NO, NAG, MMP-9, COX-2 and iNOS.
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Affiliation(s)
- Tatiane Roquete Amparo
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Janaína Brandão Seibert
- Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Fernando Augusto Siqueira Mathias
- Programa de Pós Graduação em Ciências Biológicas, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - João Filipe Pereira Vieira
- Programa de Pós Graduação em Ciências Biológicas, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Rodrigo Dian de Oliveira Aguiar Soares
- Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Kátia Michelle Freitas
- Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | | | - Geraldo Célio Brandão
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Orlando David Henrique Dos Santos
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil; Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Gustavo Henrique Bianco de Souza
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil; Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Paula Melo de Abreu Vieira
- Programa de Pós Graduação em Ciências Biológicas, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil.
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24
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Huo HJ, Chen SN, Li L, Nie P. Functional characterization of IL-10 and its receptor subunits in a perciform fish, the mandarin fish, Siniperca chuatsi. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 97:64-75. [PMID: 30935989 DOI: 10.1016/j.dci.2019.03.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/26/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
Interleukin (IL)-10 is an immune-regulatory cytokine with multiple functions. In the current study, IL-10 and its two receptors, IL-10R1 and IL-10R2 were identified in mandarin fish, Siniperca chuatsi. The inhibitory effect of mandarin fish IL-10 was investigated on pro-inflammatory cytokine expression and the ligand-receptor relationship. This IL-10 possesses conserved cysteine residues, predicted α-helices and a typical IL-10 family signature motif, similar to its mammalian orthologue, and IL-10R1 harbours predicted JAK1 and STAT3 binding sites in the intracellular region. The fish IL-10 and IL-10R1 exhibit high expression levels in several immune-related organs/tissues, such as spleen, trunk kidney and head kidney, and IL-10R2 possesses a constitutive expression pattern. The expression of IL-10 shows significant increase in spleen from infectious spleen and kidney necrosis virus (ISKNV) infected mandarin fish, where the two receptors also exhibit different levels of induced expression. Mandarin fish IL-10 also exhibits significant response to the stimulation of LPS, PHA and PMA, with the two receptors exhibiting an interesting decrease in expression following the treatment of PMA. The pro-inflammatory cytokines, IL-6, IL-1β, IL-8, TNF-α, show diminished up-regulation in LPS-stimulated splenocytes pre-incubated with IL-10, indicating the anti-inflammatory roles of mandarin fish IL-10. In EPC cells transfected with different combinations of receptors, IL-10 can enhance the expression of suppressor of cytokine signalling 3 (SOCS3) only when IL-10R1 and IL-10R2 are both expressed, suggesting the participation of the two receptors in signal transduction of mandarin fish IL-10. Similar results are observed with the usage of chimeric receptors, IL-10R1/CRFB1 and IL-10R2/CRFB5. Overall, mandarin fish IL-10 shares conserved ligand-receptor system and the prototypical inhibitory activities on pro-inflammatory cytokine expression with mammalian IL-10, implying the evolutionary conservation of this cytokine.
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Affiliation(s)
- Hui Jun Huo
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shan Nan Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Li Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong Province, 266237, China; School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China.
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25
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Zhu GQ, Jeon SH, Lee KW, Tian WJ, Cho HJ, Ha US, Hong SH, Lee JY, Moon MK, Moon SH, Kim SW, Bae WJ. Electric Stimulation Hyperthermia Relieves Inflammation via the Suppressor of Cytokine Signaling 3-Toll Like Receptor 4 Pathway in a Prostatitis Rat Model. World J Mens Health 2019; 38:359-369. [PMID: 31385476 PMCID: PMC7308236 DOI: 10.5534/wjmh.190078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 06/24/2019] [Indexed: 12/15/2022] Open
Abstract
Purpose Chronic prostatitis (CP), including chronic pelvic pain syndrome (CPPS), is the most commonly encountered manifestation of prostatitis. The aim of this study was to evaluate the effect of electric stimulation hyperthermia treatment (ESHT) on CP/CPPS and to explore the underlying mechanism. Materials and Methods RWPE-2 cells with lipopolysaccharide-induced inflammation and a prostatitis rat model induced by 17β-estradiol and dihydrotestosterone underwent sham, electric stimulation, or ESHT treatment. Four weeks later, cells, supernatants, and rat prostates were collected for analysis using immunohistochemistry, Western blots, and enzyme-linked immunosorbent assays. Results We found that ESHT improved prostatitis in vivo and attenuated inflammation in vitro. ESHT significantly induced suppressor of cytokine signaling 3 (SOCS3) expression and subsequently promoted HSP70. It attenuated inflammation through decreased expression of toll-like receptor 4 (TLR4), nuclear factor kappa B, and subsequent inflammatory cytokines. ESHT also inhibited apoptosis and released growth factor in tissue affected by prostatitis. Conclusions ESHT improved CP/CPPS and reversed pathologic changes of prostatitis by inhibiting the SOCS3-TLR4 pathway.
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Affiliation(s)
- Guan Qun Zhu
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Integrative Medicine Research Institute, The Catholic University of Korea, Seoul, Korea
| | - Seung Hwan Jeon
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Integrative Medicine Research Institute, The Catholic University of Korea, Seoul, Korea
| | - Kyu Won Lee
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Integrative Medicine Research Institute, The Catholic University of Korea, Seoul, Korea
| | - Wen Jie Tian
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Integrative Medicine Research Institute, The Catholic University of Korea, Seoul, Korea
| | - Hyuk Jin Cho
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - U Syn Ha
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sung Hoo Hong
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ji Youl Lee
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | | | | | - Sae Woong Kim
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Integrative Medicine Research Institute, The Catholic University of Korea, Seoul, Korea.
| | - Woong Jin Bae
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Catholic Integrative Medicine Research Institute, The Catholic University of Korea, Seoul, Korea.
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26
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Cevey ÁC, Penas FN, Alba Soto CD, Mirkin GA, Goren NB. IL-10/STAT3/SOCS3 Axis Is Involved in the Anti-inflammatory Effect of Benznidazole. Front Immunol 2019; 10:1267. [PMID: 31214200 PMCID: PMC6558013 DOI: 10.3389/fimmu.2019.01267] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/17/2019] [Indexed: 12/11/2022] Open
Abstract
Anti-parasitic treatment for Chagas disease mainly relies on benznidazole, which is virtually the only drug available in the market. Besides its anti-parasitic effects, benznidazole has anti-inflammatory properties. In this work we studied the mechanisms involved in the latter, demonstrating the participation of the IL-10/STAT3/SOCS3 pathway. To achieve this goal, the anti-inflammatory properties of benznidazole were studied using an in vitro model of cardiomyocyte primary culture stimulated with LPS. LPS increased both SOCS3 expression and STAT3 phosphorylation. The addition of benznidazole increased their expression even further. Specific inhibition of STAT3 precluded this effect, suggesting a role for STAT3 in the increase of SOCS3 expression induced by benznidazole. To assess the participation of SOCS3 in the anti-inflammatory effect of benznidazole, we accomplished specific knockdown of SOCS3 with siRNA. Silencing of SOCS3 in cardiomyocytes precluded the inhibitory effects of benznidazole on TNF-α, IL-6, iNOS expression and NO release. Moreover, in the absence of SOCS3, benznidazole could neither prevent IKK phosphorylation nor IκBα degradation, supporting the notion that SOCS3 is required for the benznidazole-mediated inhibition of the NF-κB pathway. Previously, we demonstrated that IL-10 increases the expression of SOCS3 in cultured cardiomyocytes. Here, we found that benznidazole shows a trend to increased IL-10 expression. To evaluate whether benznidazole increased SOCS3 in an IL-10-dependent manner, cardiomyocytes from IL-10 knockout mice were pre-treated with benznidazole and stimulated with LPS. Benznidazole neither inhibited NO release nor avoid IKK phosphorylation or IκBα degradation, showing that IL-10 is required for benznidazole-mediated inhibition of NF-κB. Moreover, exogenous addition of IL-10 to IL-10 knockout cardiomyocytes restored the inhibitory effect of benznidazole on NO release. The results reported herein show, for the first time, that the IL-10/STAT3/SOCS3 axis is involved in the anti-inflammatory effects of benznidazole. These findings may add up to new therapeutic strategies for chronic Chagas disease given its inflammatory nature.
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Affiliation(s)
- Ágata C Cevey
- Facultad de Medicina, Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Federico N Penas
- Facultad de Medicina, Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Catalina D Alba Soto
- Facultad de Medicina, Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Gerardo A Mirkin
- Facultad de Medicina, Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Nora B Goren
- Facultad de Medicina, Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
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27
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Lee YS, Lee SY, Park SY, Lee SW, Hong KW, Kim CD. Cilostazol add-on therapy for celecoxib synergistically inhibits proinflammatory cytokines by activating IL-10 and SOCS3 in the synovial fibroblasts of patients with rheumatoid arthritis. Inflammopharmacology 2019; 27:1205-1216. [DOI: 10.1007/s10787-019-00605-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 05/11/2019] [Indexed: 12/25/2022]
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28
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Regulatory cytokine function in the respiratory tract. Mucosal Immunol 2019; 12:589-600. [PMID: 30874596 PMCID: PMC7051906 DOI: 10.1038/s41385-019-0158-0] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/22/2019] [Accepted: 02/27/2019] [Indexed: 02/04/2023]
Abstract
The respiratory tract is an important site of immune regulation; required to allow protective immunity against pathogens, while minimizing tissue damage and avoiding aberrant inflammatory responses to inhaled allergens. Several cell types work in concert to control pulmonary immune responses and maintain tolerance in the respiratory tract, including regulatory and effector T cells, airway and interstitial macrophages, dendritic cells and the airway epithelium. The cytokines transforming growth factor β, interleukin (IL-) 10, IL-27, and IL-35 are key coordinators of immune regulation in tissues such as the lung. Here, we discuss the role of these cytokines during respiratory infection and allergic airway disease, highlighting the critical importance of cellular source and immunological context for the effects of these cytokines in vivo.
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29
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Laumet G, Edralin JD, Chiang ACA, Dantzer R, Heijnen CJ, Kavelaars A. Resolution of inflammation-induced depression requires T lymphocytes and endogenous brain interleukin-10 signaling. Neuropsychopharmacology 2018; 43:2597-2605. [PMID: 30054585 PMCID: PMC6224384 DOI: 10.1038/s41386-018-0154-1] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 06/18/2018] [Accepted: 07/09/2018] [Indexed: 01/13/2023]
Abstract
In humans, depression is often associated with low-grade inflammation, activation of the tryptophan/kynurenine pathway, and mild lymphopenia. Preclinical research confirms that inflammation induces depression-like behavior through activation of the tryptophan/kynurenine pathway. However, the mechanisms governing recovery from depression are unknown. Understanding the pathways leading to resolution of depression will likely lead to identification of novel targets for treatment. We investigated the contribution of T lymphocytes to the resolution of lipopolysaccharide-induced depression-like behavior. Duration of depression-like behavior was markedly prolonged in mice without mature T or B lymphocytes (Rag1-/- mice). This prolonged depression-like behavior was associated with persistent upregulation of the tryptophan-metabolizing enzyme indoleamine-2,3-dioxygenase (Ido)1 in the prefrontal cortex (PFC). Reconstitution of Rag1-/- mice with T lymphocytes normalized resolution of depression-like behavior and expression of Ido1 in the PFC. During resolution of inflammation-induced depression-like behavior, T lymphocytes accumulated in the meninges and were required for induction of interleukin (IL)-10 in the meninges and the PFC. Inhibition of IL-10 signaling by nasal administration of neutralizing anti-IL-10 antibody to WT mice led to persistent upregulation of Ido1 in the PFC and prolonged depression-like behavior. Conversely, nasal administration of recombinant IL-10 in Rag1-/- mice normalized Ido1 expression and resolution of depression-like behavior. In conclusion, the present data show for the first time that resolution of inflammation-induced depression is an active process requiring T lymphocytes acting via an IL-10-dependent pathway to decrease Ido1 expression in the brain. We propose that targeting the T lymphocyte/IL-10 resolution pathway could represent a novel approach to promote recovery from major depressive disorder.
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Affiliation(s)
- Geoffroy Laumet
- 0000 0001 2291 4776grid.240145.6Laboratory of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Blvd., Houston, TX 77030 USA
| | - Jules Daniel Edralin
- 0000 0001 2291 4776grid.240145.6Laboratory of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Blvd., Houston, TX 77030 USA
| | - Angie Chi-An Chiang
- 0000 0001 2291 4776grid.240145.6Laboratory of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Blvd., Houston, TX 77030 USA
| | - Robert Dantzer
- 0000 0001 2291 4776grid.240145.6Laboratory of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Blvd., Houston, TX 77030 USA
| | - Cobi J. Heijnen
- 0000 0001 2291 4776grid.240145.6Laboratory of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Blvd., Houston, TX 77030 USA
| | - Annemieke Kavelaars
- Laboratory of Neuroimmunology, Department of Symptom Research, The University of Texas MD Anderson Cancer Center, Houston, 1515 Holcombe Blvd., Houston, TX, 77030, USA.
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30
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Wu HY, Mao XF, Tang XQ, Ali U, Apryani E, Liu H, Li XY, Wang YX. Spinal interleukin-10 produces antinociception in neuropathy through microglial β-endorphin expression, separated from antineuroinflammation. Brain Behav Immun 2018; 73:504-519. [PMID: 29928964 DOI: 10.1016/j.bbi.2018.06.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/30/2018] [Accepted: 06/15/2018] [Indexed: 12/17/2022] Open
Abstract
Interleukin 10 (IL-10) is antinociceptive in various animal models of pain without induction of tolerance, and its mechanism of action was generally believed to be mediated by inhibition of neuroinflammation. Here we reported that intrathecal IL-10 injection dose dependently attenuated mechanical allodynia and thermal hyperalgesiain male and female neuropathic rats, with ED50 values of 40.8 ng and 24 ng, and Emax values of 61.5% MPE and 100% MPE in male rats. Treatment with IL-10 specifically increased expression of the β-endorphin (but not prodynorphin) gene and protein in primary cultures of spinal microglia but not in astrocytes or neurons. Intrathecal injection of IL-10 stimulated β-endorphin expression from microglia but not neurons or astrocytes in both contralateral and ipsilateral spinal cords of neuropathic rats. However, intrathecal injection of the β-endorphin neutralizing antibody, opioid receptor antagonist naloxone, or μ-opioid receptor antagonist CTAP completely blocked spinal IL-10-induced mechanical antiallodynia, while the microglial inhibitor minocycline and specific microglia depletor reversed spinal IL-10-induced β-endorphin overexpression and mechanical antiallodynia. IL-10 treatment increased spinal microglial STAT3 phosphorylation, and the STAT3 inhibitor NSC74859 completely reversed IL-10-increased spinal expression of β-endorphin and neuroinflammatory cytokines and mechanical antiallodynia. Silence of the Bcl3 and Socs3 genes nearly fully reversed IL-10-induced suppression of neuroinflammatory cytokines (but not expression of β-endorphin), although it had no effect on mechanical allodynia. In contrast, disruption of the POMC gene completely blocked IL-10-stimulated β-endorphin expression and mechanical antiallodynia, but had no effect on IL-10 inhibited expression of neuroinflammatory cytokines. Thus this study revealed that IL-10 produced antinociception through spinal microglial β-endorphin expression, but not inhibition of neuroinflammation.
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Affiliation(s)
- Hai-Yun Wu
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China
| | - Xiao-Fang Mao
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China
| | - Xue-Qi Tang
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China
| | - Usman Ali
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China
| | - Evhy Apryani
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China
| | - Hao Liu
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China
| | - Xin-Yan Li
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China
| | - Yong-Xiang Wang
- King's Lab, Shanghai Jiao Tong University School of Pharmacy, Shanghai 200240, China.
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El-Abhar H, Abd El Fattah MA, Wadie W, El-Tanbouly DM. Cilostazol disrupts TLR-4, Akt/GSK-3β/CREB, and IL-6/JAK-2/STAT-3/SOCS-3 crosstalk in a rat model of Huntington's disease. PLoS One 2018; 13:e0203837. [PMID: 30260985 PMCID: PMC6160003 DOI: 10.1371/journal.pone.0203837] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 08/28/2018] [Indexed: 12/21/2022] Open
Abstract
Countless neurodegenerative diseases are associated with perverse multiple targets of cyclic nucleotide signalling, hastening neuronal death. Cilostazol, a phosphodiesterase-III inhibitor, exerts neuroprotective effects against sundry models of neurotoxicity, however, its role against Huntington's disease (HD) has not yet been tackled. Hence, its modulatory effect on several signalling pathways using the 3-nitropropionic acid (3-NP) model was conducted. Animals were injected with 3-NP (10 mg/kg/day, i.p) for two successive weeks with or without the administration of cilostazol (100 mg/kg/day, p.o.). Contrary to the 3-NP effects, cilostazol largely preserved striatal dopaminergic neurons, improved motor coordination, and enhanced the immunohistochemical reaction of tyrosine hydroxylase enzyme. The anti-inflammatory effect of cilostazol was documented by the pronounced reduction of the toll like receptor-4 (TLR-4) protein expression and the inflammatory cytokine IL-6, but with a marked elevation in IL-10 striatal contents. As a consequence, cilostazol reduced IL-6 downstream signal, where it promoted the level of suppressor of cytokine signalling 3 (SOCS3), while abated the phosphorylation of Janus Kinase 2 (JAK-2) and Signal transducers and activators of transcription 3 (STAT-3). Phosphorylation of the protein kinase B/glycogen synthase kinase-3β/cAMP response element binding protein (Akt/GSK-3β/CREB) cue is another signalling pathway that was modulated by cilostazol to further signify its anti-inflammatory and antiapoptotic capacities. The latter was associated with a reduction in the caspase-3 expression assessed by immunohistochemical assay. In conclusion the present study provided a new insight into the possible mechanisms by which cilostazol possesses neuroprotective properties. These intersecting mechanisms involve the interference between TLR-4, IL-6-IL-10/JAK-2/STAT-3/SOCS-3, and Akt/GSK-3β/CREB signalling pathways.
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Affiliation(s)
- Hanan El-Abhar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- * E-mail:
| | - Mai A. Abd El Fattah
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Walaa Wadie
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Dalia M. El-Tanbouly
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Li Q, Lawrence CR, Nowak RA, Flaws JA, Bagchi MK, Bagchi IC. Bisphenol A and Phthalates Modulate Peritoneal Macrophage Function in Female Mice Involving SYMD2-H3K36 Dimethylation. Endocrinology 2018; 159:2216-2228. [PMID: 29718165 PMCID: PMC5920315 DOI: 10.1210/en.2017-03000] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 03/09/2018] [Indexed: 12/17/2022]
Abstract
Ample evidence suggests that environmental and occupational exposure to bisphenol A (BPA) and phthalate, two chemicals widely used in the plastics industry, disturbs homeostasis of innate immunity and causes inflammatory diseases. However, the underlying molecular mechanisms of these toxicants in the regulation of macrophage inflammatory functions remain poorly understood. In this study, we addressed the effect of chronic exposure to BPA or phthalate at levels relevant to human exposure, either in vitro or in vivo, on the inflammatory reprograming of peritoneal macrophages. Our studies revealed that BPA and phthalates adversely affected expression levels of the proinflammatory cytokines and mediators in response to lipopolysaccharide stimulation. Exposure to these toxicants also affected gene expression of scavenger receptors and phagocytic capacity of peritoneal macrophages. Our studies revealed that the epigenetic inhibitors differentially modulated target gene expression in these cells. Further analysis revealed that certain histone modification enzymes were aberrantly expressed in response to BPA or phthalate exposure, leading to alteration in the levels of H3K36 acetylation and dimethylation, two chromatin modifications that are critical for transcriptional efficacy and accuracy. Our results further revealed that silencing of H3K36-specific methyltransferase Smyd2 expression or inhibition of SMYD2 enzymatic activity attenuated H3K36 dimethylation and enhanced interleukin-6 and tumor necrosis factor-α expression but dampened the phagocytic capacity of peritoneal macrophages. In summary, our results indicate that peritoneal macrophages are vulnerable to BPA or phthalate at levels relevant to human exposure. These environmental toxicants affect phenotypic programming of macrophages via epigenetic mechanisms involving SMYD2-mediated H3K36 modification.
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Affiliation(s)
- Quanxi Li
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
- Correspondence: Quanxi Li, PhD, Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, 2001 South Lincoln Street, Urbana, Illinois 61802. E-mail:
| | - Catherine R Lawrence
- Department of Animal Science, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Romana A Nowak
- Department of Animal Science, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Jodi A Flaws
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Milan K Bagchi
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Indrani C Bagchi
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
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Cubro H, Kashyap S, Nath MC, Ackerman AW, Garovic VD. The Role of Interleukin-10 in the Pathophysiology of Preeclampsia. Curr Hypertens Rep 2018; 20:36. [PMID: 29713810 DOI: 10.1007/s11906-018-0833-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE OF REVIEW The pathophysiology of preeclampsia is complex and not entirely understood. A key feature in preeclampsia development is an immunological imbalance that shifts the maternal immune response from one of tolerance towards one promoting chronic inflammation and endothelial dysfunction. As a key regulator of immunity, IL-10 not only has immunomodulatory activity, but also directly benefits vasculature and promotes successful cellular interactions at the maternal-fetal interface. Here we focus on the mechanisms by which the dysregulation of IL-10 may contribute to the pathophysiology of preeclampsia. RECENT FINDINGS Dysregulation of IL-10 has been demonstrated in various animal models of preeclampsia. Decreased IL-10 production in both placenta and peripheral blood mononuclear cells has been reported in human studies, but with inconsistent results. The significance of IL-10 in preeclampsia has shifted from a key biomarker to one with therapeutic potential. As such, a better understanding of the role of this cytokine in the pathophysiology of preeclampsia is of paramount importance.
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Affiliation(s)
- Hajrunisa Cubro
- Division of Nephrology and Hypertension, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Sonu Kashyap
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | | | - Allan W Ackerman
- Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Vesna D Garovic
- Division of Nephrology and Hypertension, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
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Comi M, Amodio G, Gregori S. Interleukin-10-Producing DC-10 Is a Unique Tool to Promote Tolerance Via Antigen-Specific T Regulatory Type 1 Cells. Front Immunol 2018; 9:682. [PMID: 29686676 PMCID: PMC5900789 DOI: 10.3389/fimmu.2018.00682] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 03/20/2018] [Indexed: 01/09/2023] Open
Abstract
The prominent role of tolerogenic dendritic cells (tolDCs) in promoting immune tolerance and the development of efficient methods to generate clinical grade products allow the application of tolDCs as cell-based approach to dampen antigen (Ag)-specific T cell responses in autoimmunity and transplantation. Interleukin (IL)-10 potently modulates the differentiation and functions of myeloid cells. Our group contributed to the identification of IL-10 as key factor in inducing a subset of human tolDCs, named dendritic cell (DC)-10, endowed with the ability to spontaneously release IL-10 and induce Ag-specific T regulatory type 1 (Tr1) cells. We will provide an overview on the role of IL-10 in modulating myeloid cells and in promoting DC-10. Moreover, we will discuss the clinical application of DC-10 as inducers of Ag-specific Tr1 cells for tailoring Tr1-based cell therapy, and as cell product for promoting and restoring tolerance in T-cell-mediated diseases.
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Affiliation(s)
- Michela Comi
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget) San Raffaele Scientific Institute IRCCS, Milan, Italy
| | - Giada Amodio
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget) San Raffaele Scientific Institute IRCCS, Milan, Italy
| | - Silvia Gregori
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget) San Raffaele Scientific Institute IRCCS, Milan, Italy
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Schülke S. Induction of Interleukin-10 Producing Dendritic Cells As a Tool to Suppress Allergen-Specific T Helper 2 Responses. Front Immunol 2018; 9:455. [PMID: 29616018 PMCID: PMC5867300 DOI: 10.3389/fimmu.2018.00455] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/20/2018] [Indexed: 12/30/2022] Open
Abstract
Dendritic cells (DCs) are gatekeepers of the immune system that control induction and polarization of primary, antigen-specific immune responses. Depending on their maturation/activation status, the molecules expressed on their surface, and the cytokines produced DCs have been shown to either elicit immune responses through activation of effector T cells or induce tolerance through induction of either T cell anergy, regulatory T cells, or production of regulatory cytokines. Among the cytokines produced by tolerogenic DCs, interleukin 10 (IL-10) is a key regulatory cytokine limiting und ultimately terminating excessive T-cell responses to microbial pathogens to prevent chronic inflammation and tissue damage. Because of their important role in preventing autoimmune diseases, transplant rejection, allergic reactions, or in controlling chronic inflammation DCs have become an interesting tool to modulate antigen-specific immune responses. For the treatment of allergic inflammation, the aim is to downregulate allergen-specific T helper 2 (Th2) responses and the associated clinical symptoms [allergen-driven Th2 activation, Th2-driven immunoglobulin E (IgE) production, IgE-mediated mast cell and basophil activation, allergic inflammation]. Here, combining the presentation of allergens by DCs with a pro-tolerogenic, IL-10-producing phenotype is of special interest to modulate allergen-specific immune responses in the treatment of allergic diseases. This review discusses the reported strategies to induce DC-derived IL-10 secretion for the suppression of allergen-specific Th2-responses with a focus on IL-10 treatment, IL-10 transduction, and the usage of both whole bacteria and bacteria-derived components. Interestingly, while IL-10-producing DCs induced either by IL-10 treatment or IL-10 transduction are arrested in an immature/semi-mature state, treatment of DCs with live or killed bacteria as well as isolated bacterial components results in the induction of both anti-inflammatory IL-10 and pro-inflammatory, Th1-promoting IL-12 secretion often paralleled by an enhanced expression of co-stimulatory molecules on the stimulated DCs. By the secretion of DC-derived exosomes or CC-chemokine ligand 18, as well as the expression of inhibitory molecules like cytotoxic T lymphocyte-associated antigen 4, TNF receptor superfamily member 4, Ig-like transcript-22/cluster of differentiation 85, or programmed death-1, IL-10-producing DCs have been repeatedly shown to suppress antigen-specific Th2-responses. Therefore, DC-based vaccination approaches hold great potential to improve the treatment of allergic diseases.
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Affiliation(s)
- Stefan Schülke
- Vice President's Research Group 1, Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
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Schmok E, Abad Dar M, Behrends J, Erdmann H, Rückerl D, Endermann T, Heitmann L, Hessmann M, Yoshimura A, Rose-John S, Scheller J, Schaible UE, Ehlers S, Lang R, Hölscher C. Suppressor of Cytokine Signaling 3 in Macrophages Prevents Exacerbated Interleukin-6-Dependent Arginase-1 Activity and Early Permissiveness to Experimental Tuberculosis. Front Immunol 2017; 8:1537. [PMID: 29176982 PMCID: PMC5686055 DOI: 10.3389/fimmu.2017.01537] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 10/27/2017] [Indexed: 01/16/2023] Open
Abstract
Suppressor of cytokine signaling 3 (SOCS3) is a feedback inhibitor of interleukin (IL)-6 signaling in macrophages. In the absence of this molecule, macrophages become extremely prone to an IL-6-dependent expression of arginase-1 (Arg1) and nitric oxide synthase (NOS)2, the prototype markers for alternative or classical macrophage activation, respectively. Because both enzymes are antipodean macrophage effector molecules in Mycobacterium tuberculosis (Mtb) infection, we assessed the relevance of SOCS3 for macrophage activation during experimental tuberculosis using macrophage-specific SOCS3-deficient (LysMcreSOCS3loxP/loxP) mice. Aerosol infection of LysMcreSOCS3loxP/loxP mice resulted in remarkably higher bacterial loads in infected lungs and exacerbated pulmonary inflammation. This increased susceptibility to Mtb infection was accompanied by enhanced levels of both classical and alternative macrophage activation. However, high Arg1 expression preceded the increased induction of NOS2 and at early time points of infection mycobacteria were mostly found in cells positive for Arg1. This sequential activation of Arg1 and NOS2 expression in LysMcreSOCS3loxP/loxP mice appears to favor the initial replication of Mtb particularly in Arg1-positive cells. Neutralization of IL-6 in Mtb-infected LysMcreSOCS3loxP/loxP mice reduced arginase activity and restored control of mycobacterial replication in LysMcreSOCS3loxP/loxP mice. Our data reveal an unexpected role of SOCS3 during experimental TB: macrophage SOCS3 restrains early expression of Arg1 and helps limit Mtb replication in resident lung macrophages, thereby limiting the growth of mycobacteria. Together, SOCS3 keeps IL-6-dependent divergent macrophage responses such as Nos2 and Arg1 expression under control and safeguard protective macrophage effector mechanisms.
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Affiliation(s)
- Erik Schmok
- Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Mahin Abad Dar
- Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Jochen Behrends
- Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Hanna Erdmann
- Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Dominik Rückerl
- Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Tanja Endermann
- Infection Immunology, Research Center Borstel, Borstel, Germany
| | - Lisa Heitmann
- Infection Immunology, Research Center Borstel, Borstel, Germany
| | | | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Graduate School of Medicine, Keio University, Tokyo, Japan
| | - Stefan Rose-John
- Department of Biochemistry, Christian-Albrechts-University, Kiel, Germany.,Cluster of Excellence Inflammation-at-Interfaces (Borstel-Kiel-Lübeck-Plön), Kiel, Germany
| | - Jürgen Scheller
- Medical Faculty, Institute of Biochemistry and Molecular Biology II, Heinrich-Heine-University, Düsseldorf, Germany
| | | | - Stefan Ehlers
- Cluster of Excellence Inflammation-at-Interfaces (Borstel-Kiel-Lübeck-Plön), Kiel, Germany.,Microbial Inflammation Research, Research Center Borstel, Borstel, Germany.,Molecular Inflammation Medicine, Christian-Albrechts-University, Kiel, Germany
| | - Roland Lang
- Institute of Clinical Microbiology, Immunology and Hygiene, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Christoph Hölscher
- Infection Immunology, Research Center Borstel, Borstel, Germany.,Cluster of Excellence Inflammation-at-Interfaces (Borstel-Kiel-Lübeck-Plön), Kiel, Germany
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37
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Abstract
Cardiovascular disease (CVD) is a major health problem globally. The high incidence and case fatality of CVD are, to a large extent, a consequence of its late diagnosis and lack of highly sensitive and specific markers. Only a very small number of biomarkers, such as troponin, detect late disease. There is some evidence of an association and dysregulation between specific cytokines in the pathogenesis of CVD. These molecules are involved in inflammatory and immune mechanisms associated with atherogenesis. Several molecular/cellular pathways that include STAT, MAPK, and SMAD are modulated by cytokines. Against this background, microRNAs (miRNAs) are a class of noncoding RNAs with important roles in pathological events, leading to atherosclerotic CVD. It has been shown that the latter could affect cytokine production and contribute to progression of atherosclerotic CVD. Moreover, modulation of miRNAs appears to inhibit cardiomyocyte apoptosis, attenuate infarct size, and reduce cardiac dysfunction. This review highlights several recent preclinical and clinical studies on the role of cytokines in CVD, novel miRNA-based therapeutic approaches for therapeutic intervention, and potential circulating cytokines that have promise as biomarkers in CVD.
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Tariq M, Zhang J, Liang G, Ding L, He Q, Yang B. Macrophage Polarization: Anti-Cancer Strategies to Target Tumor-Associated Macrophage in Breast Cancer. J Cell Biochem 2017; 118:2484-2501. [DOI: 10.1002/jcb.25895] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/18/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Muhammad Tariq
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research; Institute of Pharmacology and Toxicology; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou 310058 China
| | - Jieqiong Zhang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research; Institute of Pharmacology and Toxicology; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou 310058 China
| | - Guikai Liang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research; Institute of Pharmacology and Toxicology; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou 310058 China
| | - Ling Ding
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research; Institute of Pharmacology and Toxicology; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou 310058 China
| | - Qiaojun He
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research; Institute of Pharmacology and Toxicology; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou 310058 China
| | - Bo Yang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research; Institute of Pharmacology and Toxicology; College of Pharmaceutical Sciences; Zhejiang University; Hangzhou 310058 China
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39
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The role of interleukin 10 in human papilloma virus infection and progression to cervical carcinoma. Cytokine Growth Factor Rev 2017; 34:1-13. [PMID: 28365229 DOI: 10.1016/j.cytogfr.2017.03.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/20/2017] [Accepted: 03/21/2017] [Indexed: 01/05/2023]
Abstract
Although Human Papillomavirus (HPV) exerts a vital influence on cervical carcinogenesis, other factors influence the development of a squamous intraepithelial lesion (SIL) that may or not progress to cervical cancer. Among several cytokines, Interleukin 10 (IL-10) stands out as an important anti-inflammatory factor, leading to immune system evasion through an immunosuppressive state. In the cervical microenvironment, during different stages of HPV infection, IL-10 production can be induced and maintained by different cell sources, including infected keratinocytes, some subsets of dendritic cells (DC), tumor associated macrophages (TAM), T regulatory cells (Treg) and tumor cells. Further, a wide range of effects can be exerted by IL-10 on different cell populations, such as inhibiting proinflammatory cytokine production, DCs differentiation, antigen presenting function and T-helper 1 (Th1) polarization. IL-10 is one of several cytokines involved in cancer development and sustenance, although its role in cancer is still controversial and poorly understood. However, cervical IL-10 levels tend to increase in parallel to SIL development and are even higher within cervical tumors. Accumulating data have shown that after HPV infection, IL-10 levels are enhanced as a result of HPV E2, E6 and E7 proteins action over IL-10 gene transcription, while IL-10 stimulates HPV E6 and E7 expression. Therefore, this interplay between HPV and IL-10 creates a vicious cycle that could favor an immunosuppressive microenvironment in the cervix, facilitating the progression of a simple HPV infection to SIL or cervical cancer.
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40
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Hussain T, Shah SZA, Zhao D, Sreevatsan S, Zhou X. The role of IL-10 in Mycobacterium avium subsp. paratuberculosis infection. Cell Commun Signal 2016; 14:29. [PMID: 27905994 PMCID: PMC5131435 DOI: 10.1186/s12964-016-0152-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 11/22/2016] [Indexed: 02/06/2023] Open
Abstract
Mycobacterium avium subsp. paratuberculosis (MAP) is an intracellular pathogen and is the causative agent of Johne's disease of domestic and wild ruminants. Johne's disease is characterized by chronic granulomatous enteritis leading to substantial economic losses to the livestock sector across the world. MAP persistently survives in phagocytic cells, most commonly in macrophages by disrupting its early antibacterial activity. MAP triggers several signaling pathways after attachment to pathogen recognition receptors (PRRs) of phagocytic cells. MAP adopts a survival strategy to escape the host defence mechanisms via the activation of mitogen-activated protein kinase (MAPK) pathway. The signaling mechanism initiated through toll like receptor 2 (TLR2) activates MAPK-p38 results in up-regulation of interleukin-10 (IL-10), and subsequent repression of inflammatory cytokines. The anti-inflammatory response of IL-10 is mediated through membrane-bound IL-10 receptors, leading to trans-phosphorylation and activation of Janus Kinase (JAK) family receptor-associated tyrosine kinases (TyKs), that promotes the activation of latent transcription factors, signal transducer and activators of transcription 3 (STAT3). IL-10 is an important inhibitory cytokine playing its role in blocking phagosome maturation and apoptosis. In the current review, we describe the importance of IL-10 in early phases of the MAP infection and regulatory mechanisms of the IL-10 dependent pathways in paratuberculosis. We also highlight the strategies to target IL-10, MAPK and STAT3 in other infections caused by intracellular pathogens.
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Affiliation(s)
- Tariq Hussain
- National Animal Transmissible Spongiform Encephalopathy Laboratory and key Laboratory of Animal and Zoonosis of Ministry Agriculture, College of Veterinary Medicine and State key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Syed Zahid Ali Shah
- National Animal Transmissible Spongiform Encephalopathy Laboratory and key Laboratory of Animal and Zoonosis of Ministry Agriculture, College of Veterinary Medicine and State key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Deming Zhao
- National Animal Transmissible Spongiform Encephalopathy Laboratory and key Laboratory of Animal and Zoonosis of Ministry Agriculture, College of Veterinary Medicine and State key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Srinand Sreevatsan
- Veterinary Population Medicine Department, College of Veterinary Medicine, University of Minnesota, St Paul, MN USA
| | - Xiangmei Zhou
- National Animal Transmissible Spongiform Encephalopathy Laboratory and key Laboratory of Animal and Zoonosis of Ministry Agriculture, College of Veterinary Medicine and State key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, 100193 People’s Republic of China
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Liu LM, Tu WJ, Zhu T, Wang XT, Tan ZL, Zhong H, Gao DY, Liang DY. IRF3 is an important molecule in the UII/UT system and mediates immune inflammatory injury in acute liver failure. Oncotarget 2016; 7:49027-49041. [PMID: 27448985 PMCID: PMC5226488 DOI: 10.18632/oncotarget.10717] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 06/07/2016] [Indexed: 12/17/2022] Open
Abstract
The urotensin II/urotensin receptor (UII/UT) system can mediate inflammatory liver injury in acute liver failure (ALF); however; the related mechanism is not clear. In this study, we confirmed that lipopolysaccharide/D-galactosamine (LPS/D-GalN) induced up-regulation of liver interferon regulatory factor 3 (IRF3) in ALF mice, whereas the UT antagonist urantide inhibited the up-regulated liver IRF3. LPS stimulation induced IRF3 transcription and nuclear translocation and promoted the secretion of interleukin-6 (IL-6), interferon (IFN)-β, and IFN-γ in Kupffer cells (KCs); these effects in LPS-stimulated KCs were inhibited by urantide. Knockdown of IRF3 using an adenovirus expressing an IRF3 shRNA inhibited IFN-β transcription and secretion as well as tumor necrosis factor (TNF)-α and IL-1β secretion from LPS-stimulated KCs; additionally, IL-10 transcription and secretion were promoted in response to LPS. However, LPS-stimulated TNF-α and IL-1β mRNA was not affected in the KCs. The IRF3 shRNA also did not have a significant effect on the NF-κB p65 subunit and p38MAPK protein phosphorylation levels in the nuclei of LPS-stimulated KCs. Therefore, IRF3 expression and activation depended on the signal transduction of the UII/UT system, and played important roles in UII/UT-mediated immune inflammatory injury in the liver but did not affect NF-κB and p38 MAPK activity.
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Affiliation(s)
- Liang-ming Liu
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
| | - Wen-juan Tu
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
| | - Tong Zhu
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
| | - Xiao-ting Wang
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
| | - Zhi-li Tan
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
| | - Huan Zhong
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
| | - De-yong Gao
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
| | - Dong-yu Liang
- Department of Hepatology, Songjiang Hospital Affiliated to the First People's Hospital Shanghai Jiaotong University, Shanghai, China
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Abstract
TonEBP is a key transcriptional activator of M1 phenotype in macrophage, and its high expression is associated with many inflammatory diseases. During the progression of the inflammatory responses, the M1 to M2 phenotypic switch enables the dual role of macrophages in controlling the initiation and resolution of inflammation. Here we report that in human and mouse M1 macrophages TonEBP suppresses IL-10 expression and M2 phenotype. TonEBP knockdown promoted the transcription of the IL-10 gene by enhancing chromatin accessibility and Sp1 recruitment to its promoter. The enhanced expression of M2 genes by TonEBP knockdown was abrogated by antagonism of IL-10 by either neutralizing antibodies or siRNA-mediated silencing. In addition, pharmacological suppression of TonEBP leads to similar upregulation of IL-10 and M2 genes. Thus, TonEBP suppresses M2 phenotype via downregulation of the IL-10 in M1 macrophages.
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43
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Tang C, Houston BA, Storey C, LeBoeuf RC. Both STAT3 activation and cholesterol efflux contribute to the anti-inflammatory effect of apoA-I/ABCA1 interaction in macrophages. J Lipid Res 2016; 57:848-57. [PMID: 26989082 DOI: 10.1194/jlr.m065797] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Indexed: 12/13/2022] Open
Abstract
ABCA1 exports excess cholesterol from cells to apoA-I and is essential for HDL synthesis. Genetic studies have shown that ABCA1 protects against cardiovascular disease. We have previously shown that the interaction of apoA-I with ABCA1 activates signaling molecule Janus kinase 2 (JAK2), which optimizes the cholesterol efflux activity of ABCA1. ABCA1-mediated activation of JAK2 also activates signal transducer and activator of transcription 3 (STAT3), which significantly attenuates proinflammatory cytokine expression in macrophages. To determine the mechanisms of the anti-inflammatory effects of apoA-I/ABCA1 interaction, we identified two special ABCA1 mutants, one with normal STAT3-activating capacity but lacking cholesterol efflux ability and the other with normal cholesterol efflux ability but lacking STAT3-activating capacity. We showed that activation of STAT3 by the interaction of apoA-I/ABCA1 without cholesterol efflux could significantly decrease proinflammatory cytokine expression in macrophages. Mechanistic studies showed that the anti-inflammatory effect of the apoA-I/ABCA1/STAT3 pathway is suppressor of cytokine signaling 3 dependent. Moreover, we showed that apoA-I/ABCA1-mediated cholesterol efflux without STAT3 activation can also reduce proinflammatory cytokine expression in macrophages. These findings suggest that the interaction of apoA-I/ABCA1 activates cholesterol efflux and STAT3 branch pathways to synergistically suppress inflammation in macrophages.
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Affiliation(s)
- Chongren Tang
- Division of Metabolism, Endocrinology and Nutrition, Diabetes Obesity Center for Excellence, University of Washington, Seattle, WA 98109
| | - Barbara A Houston
- Division of Metabolism, Endocrinology and Nutrition, Diabetes Obesity Center for Excellence, University of Washington, Seattle, WA 98109
| | - Carl Storey
- Division of Metabolism, Endocrinology and Nutrition, Diabetes Obesity Center for Excellence, University of Washington, Seattle, WA 98109
| | - Renee C LeBoeuf
- Division of Metabolism, Endocrinology and Nutrition, Diabetes Obesity Center for Excellence, University of Washington, Seattle, WA 98109
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Meshkibaf S, Martins AJ, Henry GT, Kim SO. Protective role of G-CSF in dextran sulfate sodium-induced acute colitis through generating gut-homing macrophages. Cytokine 2015; 78:69-78. [PMID: 26687628 DOI: 10.1016/j.cyto.2015.11.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 10/19/2015] [Accepted: 11/29/2015] [Indexed: 02/07/2023]
Abstract
Granulocyte colony-stimulating factor (G-CSF) is a pleiotropic cytokine best known for its role in promoting the generation and function of neutrophils. G-CSF is also found to be involved in macrophage generation and immune regulation; however, its in vivo role in immune homeostasis is largely unknown. Here, we examined the role of G-CSF in dextran sulfate sodium (DSS)-induced acute colitis using G-CSF receptor-deficient (G-CSFR(-/-)) mice. Mice were administered with 1.5% DSS in drinking water for 5days, and the severity of colitis was measured for the next 5days. GCSFR(-/-) mice were more susceptible to DSS-induced colitis than G-CSFR(+/+) or G-CSFR(-/+) mice. G-CSFR(-/-) mice harbored less F4/80(+) macrophages, but a similar number of neutrophils, in the intestine. In vitro, bone marrow-derived macrophages prepared in the presence of both G-CSF and macrophage colony-stimulating factor (M-CSF) (G-BMDM) expressed higher levels of regulatory macrophage markers such as programmed death ligand 2 (PDL2), CD71 and CD206, but not in arginase I, transforming growth factor (TGF)-β, Ym1 (chitinase-like 3) and FIZZ1 (found in inflammatory zone 1), and lower levels of inducible nitric oxide synthase (iNOS), CD80 and CD86 than bone marrow-derived macrophages prepared in the presence of M-CSF alone (BMDM), in response to interleukin (IL)-4/IL-13 and lipopolysaccharide (LPS)/interferon (IFN)-γ, respectively. Adoptive transfer of G-BMDM, but not BMDM, protected G-CSFR(-/-) mice from DSS-induced colitis, and suppressed expression of tumor necrosis factor (TNF)-α, IL-1β and iNOS in the intestine. These results suggest that G-CSF plays an important role in preventing colitis, likely through populating immune regulatory macrophages in the intestine.
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Affiliation(s)
- Shahab Meshkibaf
- Department of Microbiology and Immunology and Infectious Diseases Research Group, Siebens-Drake Research Institute, University of Western Ontario, London, Ontario N6G 2V4, Canada; Center for Human Immunology, University of Western Ontario, London, Ontario N6G 2V4, Canada
| | - Andrew J Martins
- Department of Microbiology and Immunology and Infectious Diseases Research Group, Siebens-Drake Research Institute, University of Western Ontario, London, Ontario N6G 2V4, Canada
| | - Garth T Henry
- Department of Microbiology and Immunology and Infectious Diseases Research Group, Siebens-Drake Research Institute, University of Western Ontario, London, Ontario N6G 2V4, Canada
| | - Sung Ouk Kim
- Department of Microbiology and Immunology and Infectious Diseases Research Group, Siebens-Drake Research Institute, University of Western Ontario, London, Ontario N6G 2V4, Canada; Center for Human Immunology, University of Western Ontario, London, Ontario N6G 2V4, Canada.
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45
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Sakharwade SC, Mukhopadhaya A. Vibrio cholerae porin OmpU induces LPS tolerance by attenuating TLR-mediated signaling. Mol Immunol 2015; 68:312-24. [PMID: 26454478 DOI: 10.1016/j.molimm.2015.09.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 09/21/2015] [Accepted: 09/23/2015] [Indexed: 12/31/2022]
Abstract
Porins can act as pathogen-associated molecular patterns, can be recognized by the host immune system and modulate immune responses. Vibrio choleraeporin OmpU aids in bacterial survival in the human gut by increasing resistance against bile acids and anti-microbial peptides. V. choleraeOmpU is pro-inflammatory in nature. However, interestingly, it can also down-regulate LPS-mediated pro-inflammatory responses. In this study, we have explored how OmpU-pretreatment affects LPS-mediated responses. Our study indicates that OmpU-pretreatment followed by LPS-activation does not induce M2-polarization of macrophages/monocytes. Further, OmpU attenuates LPS-mediated TLR2/TLR6 signaling by decreasing the association of TLRs along with recruitment of MyD88 and IRAKs to the receptor complex. This results in decreased translocation of NFκB in the nucleus. Additionally, OmpU-pretreatment up-regulates expression of IRAK-M, a negative regulator of TLR signaling, in RAW 264.7 mouse macrophage cells upon LPS-stimulation. Suppressor cytokine IL-10 is partially involved in OmpU-induced down-regulation of LPS-mediated TNFα production in human PBMCs. Furthermore, OmpU-pretreatment also affects macrophage function, by enhancing phagocytosis in LPS-treated RAW 264.7 cells, and down-regulates LPS-induced cell surface expression of co-stimulatory molecules. Altogether, OmpU causes suppression of LPS-mediated responses by attenuating the LPS-mediated TLR signaling pathway.
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Affiliation(s)
- Sanica C Sakharwade
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Manauli, 140306 Punjab, India
| | - Arunika Mukhopadhaya
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, SAS Nagar, Manauli, 140306 Punjab, India.
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46
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Yin Y, Liu W, Dai Y. SOCS3 and its role in associated diseases. Hum Immunol 2015; 76:775-80. [DOI: 10.1016/j.humimm.2015.09.037] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/03/2015] [Accepted: 09/26/2015] [Indexed: 11/27/2022]
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47
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Mannino MH, Zhu Z, Xiao H, Bai Q, Wakefield MR, Fang Y. The paradoxical role of IL-10 in immunity and cancer. Cancer Lett 2015; 367:103-7. [DOI: 10.1016/j.canlet.2015.07.009] [Citation(s) in RCA: 226] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/08/2015] [Accepted: 07/10/2015] [Indexed: 02/07/2023]
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48
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Fan B, Dun SH, Gu JQ, Guo Y, Ikuyama S. Pycnogenol Attenuates the Release of Proinflammatory Cytokines and Expression of Perilipin 2 in Lipopolysaccharide-Stimulated Microglia in Part via Inhibition of NF-κB and AP-1 Activation. PLoS One 2015; 10:e0137837. [PMID: 26367267 PMCID: PMC4569068 DOI: 10.1371/journal.pone.0137837] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 08/22/2015] [Indexed: 01/29/2023] Open
Abstract
Over activation of microglia results in the production of proinflammatory agents that have been implicated in various brain diseases. Pycnogenol is a patented extract from French maritime pine bark (Pinus pinaster Aiton) with strong antioxidant and anti-inflammatory potency. The present study investigated whether pycnogenol may be associated with the production of proinflammatory mediators in lipopolysaccharide-stimulated BV2 (mouse-derived) microglia. It was found that pycnogenol treatment was dose-dependently associated with significantly less release of nitricoxide (NO), TNF-α, IL-6 and IL-1β, and lower levels of intercellular adhesion molecule1 (ICAM-1) and perilipin 2 (PLIN2). Furthermore, this effect was replicated in primary brain microglia. Levels of inducible NO synthase mRNA and protein were attenuated, whereas there was no change in the production of the anti-inflammatory cytokine IL-10. Further evidence indicated that pycnogenol treatment led to the suppression of NF-κB activation through inhibition of p65 translocation into the nucleus and inhibited DNA binding of AP-1, suggesting that these proinflammatory factors are associated with NF-κB and AP-1. We conclude that pycnogenol exerts anti-inflammatory effects through inhibition of the NF-κB and AP-1pathway, and may be useful as a therapeutic agent in the prevention of diseases caused by over activation of microglia.
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Affiliation(s)
- Bin Fan
- Department of Neurology, Shengjing Hospital, China Medical University, Shenyang, 110004, P. R. China
- * E-mail:
| | - Sai-Hong Dun
- Department of Neurology, Shengjing Hospital, China Medical University, Shenyang, 110004, P. R. China
| | - Jian-Qiu Gu
- Department of Endocrinology and Metabolism, First Affiliated Hospital, P. R. China Medical University, Shenyang, 110001, P. R. China
| | - Yang Guo
- Department of Neurology, Shengjing Hospital, China Medical University, Shenyang, 110004, P. R. China
| | - Shoichiro Ikuyama
- Department of Clinical Investigation & Department of Endocrine, Metabolic and Rheumatic Diseases, Oita San-ai Medical center, Oita, 870–1151, Japan
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IL-10 disrupts the Brd4-docking sites to inhibit LPS-induced CXCL8 and TNF-α expression in monocytes: Implications for chronic obstructive pulmonary disease. J Allergy Clin Immunol 2015; 136:781-791.e9. [DOI: 10.1016/j.jaci.2015.04.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 03/30/2015] [Accepted: 04/13/2015] [Indexed: 11/18/2022]
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50
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van de Vyver M, Engelbrecht L, Smith C, Myburgh KH. Neutrophil and monocyte responses to downhill running: Intracellular contents of MPO, IL-6, IL-10, pstat3, and SOCS3. Scand J Med Sci Sports 2015; 26:638-47. [DOI: 10.1111/sms.12497] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2015] [Indexed: 12/19/2022]
Affiliation(s)
- M. van de Vyver
- Department of Physiological Sciences; Stellenbosch University; Stellenbosch South Africa
- Division of Endocrinology, Department of Medicine; Stellenbosch University; Tygerberg South Africa
| | - L. Engelbrecht
- Department of Physiological Sciences; Stellenbosch University; Stellenbosch South Africa
- Central Analytical Facility; Stellenbosch University; Stellenbosch South Africa
| | - C. Smith
- Department of Physiological Sciences; Stellenbosch University; Stellenbosch South Africa
| | - K. H. Myburgh
- Department of Physiological Sciences; Stellenbosch University; Stellenbosch South Africa
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