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Osei D, Baumgart-Vogt E, Ahlemeyer B, Herden C. Tumor Necrosis Factor-α Receptor 1 Mediates Borna Disease Virus 1-Induced Changes in Peroxisomal and Mitochondrial Dynamics in Neurons. Int J Mol Sci 2024; 25:1849. [PMID: 38339126 PMCID: PMC10855776 DOI: 10.3390/ijms25031849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/28/2024] [Accepted: 02/01/2024] [Indexed: 02/12/2024] Open
Abstract
Borna disease virus 1 (BoDV1) causes a persistent infection in the mammalian brain. Peroxisomes and mitochondria play essential roles in the cellular antiviral immune response, but the effect of BoDV1 infection on peroxisomal and mitochondrial dynamics and their respective antioxidant capacities is still not clear. Using different mouse lines-i.e., tumor necrosis factor-α transgenic (TNFTg; to pro-inflammatory status), TNF receptor-1 knockout (TNFR1ko), and TNFR2ko mice in comparison to wild-type (Wt) mice-we analyzed the abundances of both organelles and their main antioxidant enzymes, catalase and superoxide dismutase 2 (SOD2), in neurons of the hippocampal, cerebral, and cerebellar cortices. In TNFTg mice, a strong increase in mitochondrial (6.9-fold) and SOD2 (12.1-fold) abundances was detected; meanwhile, peroxisomal abundance increased slightly (1.5-fold), but that of catalase decreased (2.9-fold). After BoDV1 infection, a strong decrease in mitochondrial (2.1-6.5-fold), SOD2 (2.7-9.1-fold), and catalase (2.7-10.3-fold) abundances, but a slight increase in peroxisomes (1.3-1.6-fold), were detected in Wt and TNFR2ko mice, whereas no changes occurred in TNFR1ko mice. Our data suggest that the TNF system plays a crucial role in the biogenesis of both subcellular organelles. Moreover, TNFR1 signaling mediated the changes in peroxisomal and mitochondrial dynamics after BoDV1 infection, highlighting new mechanisms by which BoDV1 may achieve immune evasion and viral persistence.
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Affiliation(s)
- Dominic Osei
- Institute for Anatomy and Cell Biology, Justus Liebig University Giessen, 35392 Giessen, Germany; (D.O.); (E.B.-V.)
- Institute of Veterinary Pathology, Justus Liebig University Giessen, 35392 Giessen, Germany
| | - Eveline Baumgart-Vogt
- Institute for Anatomy and Cell Biology, Justus Liebig University Giessen, 35392 Giessen, Germany; (D.O.); (E.B.-V.)
| | - Barbara Ahlemeyer
- Institute for Anatomy and Cell Biology, Justus Liebig University Giessen, 35392 Giessen, Germany; (D.O.); (E.B.-V.)
| | - Christiane Herden
- Institute of Veterinary Pathology, Justus Liebig University Giessen, 35392 Giessen, Germany
- Center for Mind, Brain and Behavior, Justus Liebig University Giessen, 35392 Giessen, Germany
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2
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Alim LF, Keane C, Souza-Fonseca-Guimaraes F. Molecular mechanisms of tumour necrosis factor signalling via TNF receptor 1 and TNF receptor 2 in the tumour microenvironment. Curr Opin Immunol 2024; 86:102409. [PMID: 38154421 DOI: 10.1016/j.coi.2023.102409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/27/2023] [Accepted: 11/30/2023] [Indexed: 12/30/2023]
Abstract
Tumour necrosis factor (TNF) is a primary mediator of inflammatory processes by facilitating cell death, immune cell activation and triggering of inflammation. In the cancer context, research has revealed TNF as a multifaceted cytokine that can be both pro- or anti-tumorigenic depending on what context is observed. We explore the plethora of ways that TNF and its receptors manipulate the functional and phenotypic characteristics in the tumour microenvironment (TME) on both tumour cells and immune cells, promoting either tumour elimination or progression. Here, we discuss the latest cutting-edge TNF-focused biologics currently in clinical translation that modifies the TME to derive greater immune responses and therapeutic outcomes, and further give perspectives on the future of targeting TNF in the context of cancer by emerging technological approaches.
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Affiliation(s)
- Louisa F Alim
- Frazer Institute, The University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Colm Keane
- Frazer Institute, The University of Queensland, Woolloongabba, QLD 4102, Australia; Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia
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Yoon Y, Kim CW, Kim MY, Baik SK, Jung PY, Eom YW. Interferon-β Overexpression in Adipose Tissue-Derived Stem Cells Induces HepG2 and Macrophage Cell Death in Liver Tumor Organoids via Induction of TNF-Related Apoptosis-Inducing Ligand Expression. Int J Mol Sci 2024; 25:1325. [PMID: 38279326 PMCID: PMC10816756 DOI: 10.3390/ijms25021325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/18/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
Liver tumor organoids derived from liver tumor tissues and pluripotent stem cells are used for liver tumor research but have several challenges in primary cell isolation and stem cell differentiation. Here, we investigated the potential of HepG2-based liver tumor organoids for screening anticancer drugs by evaluating their responsiveness to IFN-β produced by mesenchymal stem cells (MSCs). Liver tumor organoids were prepared in three days on Matrigel using HepG2, primary liver sinusoidal epithelial cells (LSECs), LX-2 human hepatic stellate cells, and THP-1-derived macrophages at a ratio of 4:4:1:1, with 105 total cells. Hepatocyte-related and M2 macrophage-associated genes increased in liver tumor organoids. IFN-β treatment decreased the viability of liver tumor organoids and increased M1 macrophage marker expression (i.e., TNF-α and iNOS) and TRAIL. TRAIL expression was increased in all four cell types exposed to IFN-β, but cell death was only observed in HepG2 cells and macrophages. Further, MSCs overexpressing IFN-β (ASC-IFN-β) also expressed TRAIL, contributing to the reduced viability of liver tumor organoids. In summary, IFN-β or ASC-IFN-β can induce TRAIL-dependent HepG2 and macrophage cell death in HepG2-based liver tumor organoids, highlighting these liver tumor organoids as suitable for anticancer drug screening and mechanistic studies.
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Affiliation(s)
- Yongdae Yoon
- Regeneration Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (Y.Y.); (M.Y.K.); (S.K.B.)
| | - Chang Wan Kim
- Department of Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea;
| | - Moon Young Kim
- Regeneration Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (Y.Y.); (M.Y.K.); (S.K.B.)
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Soon Koo Baik
- Regeneration Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (Y.Y.); (M.Y.K.); (S.K.B.)
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Pil Young Jung
- Department of Surgery, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea;
| | - Young Woo Eom
- Regeneration Medicine Research Center, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea; (Y.Y.); (M.Y.K.); (S.K.B.)
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Clark IA, Vissel B. Autocrine positive feedback of tumor necrosis factor from activated microglia proposed to be of widespread relevance in chronic neurological disease. Pharmacol Res Perspect 2023; 11:e01136. [PMID: 37750203 PMCID: PMC10520644 DOI: 10.1002/prp2.1136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/27/2023] Open
Abstract
Over a decade's experience of post-stroke rehabilitation by administering the specific anti-TNF biological, etanercept, by the novel perispinal route, is consistent with a wide range of chronically diminished neurological function having been caused by persistent excessive cerebral levels of TNF. We propose that this TNF persistence, and cerebral disease chronicity, largely arises from a positive autocrine feedback loop of this cytokine, allowing the persistence of microglial activation caused by the excess TNF that these cells produce. It appears that many of these observations have never been exploited to construct a broad understanding and treatment of certain chronic, yet reversible, neurological illnesses. We propose that this treatment allows these chronically activated microglia to revert to their normal quiescent state, rather than simply neutralizing the direct harmful effects of this cytokine after its release from microglia. Logically, this also applies to the chronic cerebral aspects of various other neurological conditions characterized by activated microglia. These include long COVID, Lyme disease, post-stroke syndromes, traumatic brain injury, chronic traumatic encephalopathy, post-chemotherapy, post-irradiation cerebral dysfunction, cerebral palsy, fetal alcohol syndrome, hepatic encephalopathy, the antinociceptive state of morphine tolerance, and neurogenic pain. In addition, certain psychiatric states, in isolation or as sequelae of infectious diseases such as Lyme disease and long COVID, are candidates for being understood through this approach and treated accordingly. Perispinal etanercept provides the prospect of being able to treat various chronic central nervous system illnesses, whether they are of infectious or non-infectious origin, through reversing excess TNF generation by microglia.
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Affiliation(s)
- Ian A. Clark
- Research School of Biology, Australian National UniversityCanberraAustralian Capital TerritoryAustralia
| | - Bryce Vissel
- St Vincent's Hospital Centre for Applied Medical ResearchSt Vincent's HospitalDarlinghurstAustralia
- UNSW Medicine & Health, St Vincent's Healthcare Clinical Campus, Faculty of Medicine and HealthSchool of Clinical Medicine, UNSW SydneySydneyNew South WalesAustralia
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Abstract
The cytokine TNF signals via two distinct receptors, TNF receptor 1 (TNFR1) and TNFR2, and is a central mediator of various immune-mediated diseases. Indeed, TNF-neutralizing biologic drugs have been in clinical use for the treatment of many inflammatory pathological conditions, including various rheumatic diseases, for decades. TNF has pleiotropic effects and can both promote and inhibit pro-inflammatory processes. The integrated net effect of TNF in vivo is a result of cytotoxic TNFR1 signalling and the stimulation of pro-inflammatory processes mediated by TNFR1 and TNFR2 and also TNFR2-mediated anti-inflammatory and tissue-protective activities. Inhibition of the beneficial activities of TNFR2 might explain why TNF-neutralizing drugs, although highly effective in some diseases, have limited benefit in the treatment of other TNF-associated pathological conditions (such as graft-versus-host disease) or even worsen the pathological condition (such as multiple sclerosis). Receptor-specific biologic drugs have the potential to tip the balance from TNFR1-mediated activities to TNFR2-mediated activities and enable the treatment of diseases that do not respond to current TNF inhibitors. Accordingly, a variety of reagents have been developed that either selectively inhibit TNFR1 or selectively activate TNFR2. Several of these reagents have shown promise in preclinical studies and are now in, or approaching, clinical trials.
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Affiliation(s)
- Daniela Siegmund
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital of Würzburg, Würzburg, Germany
| | - Harald Wajant
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital of Würzburg, Würzburg, Germany.
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Yang CM, Yang CC, Hsu WH, Hsiao LD, Tseng HC, Shih YF. Tumor Necrosis Factor-α-Induced C-C Motif Chemokine Ligand 20 Expression through TNF Receptor 1-Dependent Activation of EGFR/p38 MAPK and JNK1/2/FoxO1 or the NF-κB Pathway in Human Cardiac Fibroblasts. Int J Mol Sci 2022; 23:ijms23169086. [PMID: 36012347 PMCID: PMC9409325 DOI: 10.3390/ijms23169086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022] Open
Abstract
Tumor necrosis factor (TNF)-α is involved in the pathogenesis of cardiac injury, inflammation, and apoptosis. It is a crucial pro-inflammatory cytokine in many heart disorders, including chronic heart failure and ischemic heart disease, contributing to cardiac remodeling and dysfunction. The implication of TNF-α in inflammatory responses in the heart has been indicated to be mediated through the induction of C-C Motif Chemokine Ligand 20 (CCL20). However, the detailed mechanisms of TNF-α-induced CCL20 upregulation in human cardiac fibroblasts (HCFs) are not completely defined. We demonstrated that in HCFs, TNF-α induced CCL20 mRNA expression and promoter activity leading to an increase in the secretion of CCL20. TNF-α-mediated responses were attenuated by pretreatment with TNFR1 antibody, the inhibitor of epidermal growth factor receptor (EGFR) (AG1478), p38 mitogen-activated protein kinase (MAPK) (p38 inhibitor VIII, p38i VIII), c-Jun amino N-terminal kinase (JNK)1/2 (SP600125), nuclear factor kappaB (NF-κB) (helenalin), or forkhead box O (FoxO)1 (AS1841856) and transfection with siRNA of TNFR1, EGFR, p38α, JNK2, p65, or FoxO1. Moreover, TNF-α markedly induced EGFR, p38 MAPK, JNK1/2, FoxO1, and NF-κB p65 phosphorylation which was inhibited by their respective inhibitors in these cells. In addition, TNF-α-enhanced binding of FoxO1 or p65 to the CCL20 promoter was inhibited by p38i VIII, SP600125, and AS1841856, or helenalin, respectively. Accordingly, in HCFs, our findings are the first to clarify that TNF-α-induced CCL20 secretion is mediated through a TNFR1-dependent EGFR/p38 MAPK and JNK1/2/FoxO1 or NF-κB cascade. We demonstrated that TNFR1-derived EGFR transactivation is involved in the TNF-α-induced responses in these cells. Understanding the regulation of CCL20 expression by TNF-α on HCFs may provide a potential therapeutic strategy in cardiac inflammatory disorders.
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Affiliation(s)
- Chuen-Mao Yang
- Department of Pharmacology, College of Medicine, China Medical University, Taichung 40402, Taiwan
- Ph.D. Program for Biotech Pharmaceutical Industry, China Medical University, Taichung 40402, Taiwan
- Department of Post-Baccalaureate Veterinary Medicine, College of Medical and Health Science, Asia University, Wufeng, Taichung 41354, Taiwan
- Correspondence: ; Tel.: +886-4-22053366 (ext. 2229)
| | - Chien-Chung Yang
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital at Tao-Yuan, Kwei-San, Tao-Yuan 33302, Taiwan
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan 33302, Taiwan
| | - Wun-Hsin Hsu
- Department of Pharmacology, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Li-Der Hsiao
- Department of Pharmacology, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Hui-Ching Tseng
- Department of Pharmacology, College of Medicine, China Medical University, Taichung 40402, Taiwan
| | - Ya-Fang Shih
- Department of Pharmacology, College of Medicine, China Medical University, Taichung 40402, Taiwan
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Stratos I, Behrendt AK, Anselm C, Gonzalez A, Mittlmeier T, Vollmar B. Inhibition of TNF-α Restores Muscle Force, Inhibits Inflammation, and Reduces Apoptosis of Traumatized Skeletal Muscles. Cells 2022; 11:cells11152397. [PMID: 35954240 PMCID: PMC9367740 DOI: 10.3390/cells11152397] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 02/06/2023] Open
Abstract
Background: Muscle injuries are common in humans and are often associated with irrecoverable damage and disability. Upon muscle injury, TNF-α signaling pathways modulate the healing process and are predominantly associated with tissue degradation. In this study we assumed that TNF-α inhibition could reduce the TNF-α-associated tissue degradation after muscle injury. Materials and methods: Therefore, the left soleus muscle of 42 male Wistar rats was injured using a standardized open muscle injury model. All rats were treated immediately after injury either with infliximab (single i.p. injection; 10 mg/kg b.w.) or saline solution i.p. Final measurements were conducted at day one, four, and 14 post injury. The muscle force, the muscle cell proliferation, the muscle cell coverage as well as the myofiber diameter served as read out parameters of our experiment. Results: Systemic application of infliximab could significantly reduce the TNF-α levels in the injured muscle at day four upon trauma compared to saline treated animals. The ratio of muscle weight to body weight was increased and the twitch muscle force showed a significant rise 14 days after trauma and TNF-α inhibition. Quantification of myofiber diameter in the penumbra zone showed a significant difference between both groups at day one and four after injury, indicated by muscle hypertrophy in the infliximab group. Planimetric analysis of the injured muscle at day 14 revealed increased muscle tissue fraction in the infliximab group compared to the control animals. Muscle cell proliferation did not differ between both groups. Conclusions: These data provide evidence that the TNF-α blockade positively regulates the restauration of skeletal muscles upon injury.
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Affiliation(s)
- Ioannis Stratos
- Department of Orthopaedic Surgery, Julius-Maximilians University Wuerzburg, 97074 Wuerzburg, Germany
- Department of Trauma, Hand and Reconstructive Surgery, University of Rostock, 18057 Rostock, Germany; (A.-K.B.); (A.G.); (T.M.)
- Correspondence:
| | - Ann-Kathrin Behrendt
- Department of Trauma, Hand and Reconstructive Surgery, University of Rostock, 18057 Rostock, Germany; (A.-K.B.); (A.G.); (T.M.)
- Institute for Experimental Surgery, University of Rostock, 18057 Rostock, Germany; (C.A.); (B.V.)
| | - Christian Anselm
- Institute for Experimental Surgery, University of Rostock, 18057 Rostock, Germany; (C.A.); (B.V.)
| | - Aldebarani Gonzalez
- Department of Trauma, Hand and Reconstructive Surgery, University of Rostock, 18057 Rostock, Germany; (A.-K.B.); (A.G.); (T.M.)
- Institute for Experimental Surgery, University of Rostock, 18057 Rostock, Germany; (C.A.); (B.V.)
| | - Thomas Mittlmeier
- Department of Trauma, Hand and Reconstructive Surgery, University of Rostock, 18057 Rostock, Germany; (A.-K.B.); (A.G.); (T.M.)
| | - Brigitte Vollmar
- Institute for Experimental Surgery, University of Rostock, 18057 Rostock, Germany; (C.A.); (B.V.)
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Kumar N, Zuo Y, Yalavarthi S, Hunker KL, Knight JS, Kanthi Y, Obi AT, Ganesh SK. SARS-CoV-2 Spike Protein S1-Mediated Endothelial Injury and Pro-Inflammatory State Is Amplified by Dihydrotestosterone and Prevented by Mineralocorticoid Antagonism. Viruses 2021; 13:2209. [PMID: 34835015 PMCID: PMC8617813 DOI: 10.3390/v13112209] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/29/2021] [Accepted: 10/31/2021] [Indexed: 12/13/2022] Open
Abstract
Men are disproportionately affected by the coronavirus disease-2019 (COVID-19), and face higher odds of severe illness and death compared to women. The vascular effects of androgen signaling and inflammatory cytokines in severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2)-mediated endothelial injury are not defined. We determined the effects of SARS-CoV-2 spike protein-mediated endothelial injury under conditions of exposure to androgen dihydrotestosterone (DHT) and tumor necrosis factor-a (TNF-α) and tested potentially therapeutic effects of mineralocorticoid receptor antagonism by spironolactone. Circulating endothelial injury markers VCAM-1 and E-selectin were measured in men and women diagnosed with COVID-19. Exposure of endothelial cells (ECs) in vitro to DHT exacerbated spike protein S1-mediated endothelial injury transcripts for the cell adhesion molecules E-selectin, VCAM-1 and ICAM-1 and anti-fibrinolytic PAI-1 (p < 0.05), and increased THP-1 monocyte adhesion to ECs (p = 0.032). Spironolactone dramatically reduced DHT+S1-induced endothelial activation. TNF-α exacerbated S1-induced EC activation, which was abrogated by pretreatment with spironolactone. Analysis from patients hospitalized with COVID-19 showed concordant higher circulating VCAM-1 and E-Selectin levels in men, compared to women. A beneficial effect of the FDA-approved drug spironolactone was observed on endothelial cells in vitro, supporting a rationale for further evaluation of mineralocorticoid antagonism as an adjunct treatment in COVID-19.
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Affiliation(s)
- Nitin Kumar
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yu Zuo
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI 48109, USA; (Y.Z.); (S.Y.); (J.S.K.)
| | - Srilakshmi Yalavarthi
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI 48109, USA; (Y.Z.); (S.Y.); (J.S.K.)
| | - Kristina L. Hunker
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jason S. Knight
- Department of Internal Medicine, Division of Rheumatology, University of Michigan, Ann Arbor, MI 48109, USA; (Y.Z.); (S.Y.); (J.S.K.)
| | - Yogendra Kanthi
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- National Heart, Lung and Blood Institute, Bethesda, MD 20892, USA
| | - Andrea T. Obi
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109, USA;
| | - Santhi K. Ganesh
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI 48109, USA; (N.K.); (K.L.H.); (Y.K.)
- Department of Human Genetics, University of Michigan, Ann Arbor, MI 48109, USA
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Malkov MI, Lee CT, Taylor CT. Regulation of the Hypoxia-Inducible Factor (HIF) by Pro-Inflammatory Cytokines. Cells 2021; 10:cells10092340. [PMID: 34571989 PMCID: PMC8466990 DOI: 10.3390/cells10092340] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/27/2021] [Accepted: 09/02/2021] [Indexed: 12/28/2022] Open
Abstract
Hypoxia and inflammation are frequently co-incidental features of the tissue microenvironment in a wide range of inflammatory diseases. While the impact of hypoxia on inflammatory pathways in immune cells has been well characterized, less is known about how inflammatory stimuli such as cytokines impact upon the canonical hypoxia-inducible factor (HIF) pathway, the master regulator of the cellular response to hypoxia. In this review, we discuss what is known about the impact of two major pro-inflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), on the regulation of HIF-dependent signaling at sites of inflammation. We report extensive evidence for these cytokines directly impacting upon HIF signaling through the regulation of HIF at transcriptional and post-translational levels. We conclude that multi-level crosstalk between inflammatory and hypoxic signaling pathways plays an important role in shaping the nature and degree of inflammation occurring at hypoxic sites.
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Affiliation(s)
- Mykyta I. Malkov
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; (M.I.M.); (C.T.L.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Chee Teik Lee
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; (M.I.M.); (C.T.L.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Cormac T. Taylor
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; (M.I.M.); (C.T.L.)
- School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
- Correspondence:
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10
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Silva TF, Gonçalves MD, Concato VM, Bortoleti BTDS, Tomiotto-Pellissier F, Sanfelice RA, Rodrigues ACJ, Detoni MB, Simão ANC, Custodio LA, Mazzuco TL, da Costa IN, Miranda-Sapla MM, Pavanelli WR, Conchon-Costa I. Impairment of effector molecules response in diabetes induces susceptibility to Leishmania amazonensis infection. Immunol Lett 2021; 237:58-65. [PMID: 34246712 DOI: 10.1016/j.imlet.2021.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/01/2021] [Accepted: 07/01/2021] [Indexed: 11/18/2022]
Abstract
Type 2 Diabetes is a chronic disease resulting from insulin dysfunction that triggers a low-grade inflammatory state and immune impairment. Leishmaniasis is an infectious disease characterized by chronic inflammation resulted from the parasite's immunomodulation ability. Thus, due to the delicate immune balance required in the combat and resistance to Leishmania infection and the chronic deregulation of the inflammatory response observed in type 2 diabetes, we evaluated the response of PBMC from diabetic patients to in vitro Leishmania amazonensis infection. For that, peripheral blood was collected from 25 diabetic patients and 25 healthy controls matched for age for cells extraction and subsequent experimental infection for 2 or 24 h and analyzed for phagocytic and leishmanicidal capacity by optical microscopy, oxidative stress by GSSG generation, labeling of intracellular mediators by enzyme-Linked immunosorbent assay, and cytokines measurement with cytometric beads array technique. We found that the diabetic group had a higher percentage of infected cells and a greater number of amastigotes per cell. Also, even inducing NF-kB phosphorylation and increasing TNF production after infection, cells from diabetic patients were unable to downregulate NRF2 and generate oxidative stress, which may be associated with the exacerbated levels of IL-6 observed. PBMC of diabetic individuals are more susceptible to infection by L. amazonensis and fail to control the infection over time due to the inability to generate effector microbicidal molecules.
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Affiliation(s)
- Taylon Felipe Silva
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil.
| | - Manoela Daiele Gonçalves
- Laboratory of Biotransformation and Phytochemistry, Department of Chemistry, State University of Londrina, Londrina, Brazil
| | - Virgínia Márcia Concato
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Bruna Taciane da Silva Bortoleti
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil; Biosciences and Biotechnology Graduate Program, Carlos Chagas Institute (ICC), Fiocruz, Curitiba, Brazil
| | - Fernanda Tomiotto-Pellissier
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil; Biosciences and Biotechnology Graduate Program, Carlos Chagas Institute (ICC), Fiocruz, Curitiba, Brazil
| | - Raquel Arruda Sanfelice
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Ana Carolina Jacob Rodrigues
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil; Biosciences and Biotechnology Graduate Program, Carlos Chagas Institute (ICC), Fiocruz, Curitiba, Brazil
| | - Mariana Barbosa Detoni
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Andréa Name Colado Simão
- Department of Pathology, Clinical Analysis, and Toxicology, State University of Londrina, Londrina, Brazil
| | - Luiz Antonio Custodio
- Department of Pathology, Clinical Analysis, and Toxicology, State University of Londrina, Londrina, Brazil
| | - Tânia Longo Mazzuco
- Endocrine Interactions Research Group, Department of Medical Clinic, State University of Londrina, Londrina, Brazil
| | - Idessania Nazareth da Costa
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Milena Menegazzo Miranda-Sapla
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Wander Rogério Pavanelli
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil
| | - Ivete Conchon-Costa
- Laboratory of Immunoparasitology of Neglected Diseases and Cancer-LIDNC, Department of Pathological Sciences, State University of Londrina, Londrina, Brazil.
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11
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Aladhami AK, Unger CA, Ennis SL, Altomare D, Ji H, Hope MC, Velázquez KT, Enos RT. Macrophage tumor necrosis factor-alpha deletion does not protect against obesity-associated metabolic dysfunction. FASEB J 2021; 35:e21665. [PMID: 34131955 PMCID: PMC8716064 DOI: 10.1096/fj.202100543rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 01/11/2023]
Abstract
The pro-inflammatory cytokine, tumor necrosis factor-alpha (TNF-α), has been suggested to be a key factor in the induction of obesity-associated metabolic dysfunction. However, the role that macrophage-derived TNF-α has on regulating metabolic perturbations in obesity is not completely understood. Therefore, we utilized the TNF-αFlox/Flox(F/F) , LyzMcre± mouse model to determine the impact that macrophage TNF-α deletion has on the development of high-fat diet (HFD)-induced obesity. At 10 weeks of age, male littermates were randomly assigned to 1 of 4 groups: TNF-αF/F low-fat diet (TNF-αF/F LFD), TNF-αF/F,LyzMCre LFD, TNF-αF/F HFD, or TNF-αF/F,LyzMCre HFD (n = 16-28/group) and were fed their respective diets for 18 weeks. Body weight was assessed throughout the course of the experiment. Body composition, hepatic lipid accumulation, and metabolic outcomes were also examined. A microarray gene expression experiment was performed from RNA isolated from epididymal adipose tissue of the HFD-fed groups (n = 10/group) and results were verified via qRT-PCR for all groups. Macrophage-derived TNF-α deletion significantly reduced adipose tissue TNF-α gene expression and circulating TNF-α and downregulated genes linked to the toll-like receptor (TLR) and NFκB signaling pathways. However, macrophage TNF-α deletion had no effect on hindering the development of obesity, hepatic lipid accumulation, or improving glucose metabolism or insulin sensitivity. In conclusion, macrophage-derived TNF-α is not a causative factor for the induction of obesity-associated metabolic dysfunction.
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Affiliation(s)
- Ahmed K. Aladhami
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
- Nursing College, University of Baghdad, Baghdad, Iraq
| | - Christian A. Unger
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
| | - Shannon L. Ennis
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
| | - Diego Altomare
- Department of Drug Discovery and Biomedical Sciences, University of South Carolina College of Pharmacy, Columbia, SC, USA
| | - Hao Ji
- Department of Drug Discovery and Biomedical Sciences, University of South Carolina College of Pharmacy, Columbia, SC, USA
| | - Marion C. Hope
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
| | - Kandy T. Velázquez
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
| | - Reilly T. Enos
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
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12
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Clark I, Vissel B. Broader Insights into Understanding Tumor Necrosis Factor and Neurodegenerative Disease Pathogenesis Infer New Therapeutic Approaches. J Alzheimers Dis 2021; 79:931-948. [PMID: 33459706 PMCID: PMC7990436 DOI: 10.3233/jad-201186] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/11/2020] [Indexed: 12/12/2022]
Abstract
Proinflammatory cytokines such as tumor necrosis factor (TNF), with its now appreciated key roles in neurophysiology as well as neuropathophysiology, are sufficiently well-documented to be useful tools for enquiry into the natural history of neurodegenerative diseases. We review the broader literature on TNF to rationalize why abruptly-acquired neurodegenerative states do not exhibit the remorseless clinical progression seen in those states with gradual onsets. We propose that the three typically non-worsening neurodegenerative syndromes, post-stroke, post-traumatic brain injury (TBI), and post cardiac arrest, usually become and remain static because of excess cerebral TNF induced by the initial dramatic peak keeping microglia chronically activated through an autocrine loop of microglial activation through excess cerebral TNF. The existence of this autocrine loop rationalizes post-damage repair with perispinal etanercept and proposes a treatment for cerebral aspects of COVID-19 chronicity. Another insufficiently considered aspect of cerebral proinflammatory cytokines is the fitness of the endogenous cerebral anti-TNF system provided by norepinephrine (NE), generated and distributed throughout the brain from the locus coeruleus (LC). We propose that an intact LC, and therefore an intact NE-mediated endogenous anti-cerebral TNF system, plus the DAMP (damage or danger-associated molecular pattern) input having diminished, is what allows post-stroke, post-TBI, and post cardiac arrest patients a strong long-term survival advantage over Alzheimer's disease and Parkinson's disease sufferers. In contrast, Alzheimer's disease and Parkinson's disease patients remorselessly worsen, being handicapped by sustained, accumulating, DAMP and PAMP (pathogen-associated molecular patterns) input, as well as loss of the LC-origin, NE-mediated, endogenous anti-cerebral TNF system. Adrenergic receptor agonists may counter this.
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Affiliation(s)
- I.A. Clark
- Research School of Biology, Australian National University, Canberra, Australia
| | - B. Vissel
- Centre for Neuroscience and Regenerative Medicine, Faculty of Science, University of Technology, Sydney, Australia
- St. Vincent’s Centre for Applied Medical Research, Sydney, Australia
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13
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Covarrubias S, Vollmers AC, Capili A, Boettcher M, Shulkin A, Correa MR, Halasz H, Robinson EK, O'Briain L, Vollmers C, Blau J, Katzman S, McManus MT, Carpenter S. High-Throughput CRISPR Screening Identifies Genes Involved in Macrophage Viability and Inflammatory Pathways. Cell Rep 2020; 33:108541. [PMID: 33378675 PMCID: PMC7901356 DOI: 10.1016/j.celrep.2020.108541] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 10/08/2020] [Accepted: 11/30/2020] [Indexed: 12/16/2022] Open
Abstract
Macrophages are critical effector cells of the immune system, and understanding genes involved in their viability and function is essential for gaining insights into immune system dysregulation during disease. We use a high-throughput, pooled-based CRISPR-Cas screening approach to identify essential genes required for macrophage viability. In addition, we target 3' UTRs to gain insights into previously unidentified cis-regulatory regions that control these essential genes. Next, using our recently generated nuclear factor κB (NF-κB) reporter line, we perform a fluorescence-activated cell sorting (FACS)-based high-throughput genetic screen and discover a number of previously unidentified positive and negative regulators of the NF-κB pathway. We unravel complexities of the TNF signaling cascade, showing that it can function in an autocrine manner in macrophages to negatively regulate the pathway. Utilizing a single complex library design, we are capable of interrogating various aspects of macrophage biology, thus generating a resource for future studies.
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Affiliation(s)
- Sergio Covarrubias
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Apple Cortez Vollmers
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Allyson Capili
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Michael Boettcher
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA; Diabetes Center, University of California, San Francisco, San Francisco, CA, USA; W.M. Keck Center for Noncoding RNAs, University of California, San Francisco, San Francisco, CA, USA; Institute for Molecular Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Aaron Shulkin
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Michele Ramos Correa
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Haley Halasz
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Elektra K Robinson
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Laura O'Briain
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Christopher Vollmers
- Department of Biomolecular Engineering, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - James Blau
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA; Diabetes Center, University of California, San Francisco, San Francisco, CA, USA; W.M. Keck Center for Noncoding RNAs, University of California, San Francisco, San Francisco, CA, USA
| | - Sol Katzman
- Center for Biomolecular Science and Engineering, University of California, Santa Cruz, Santa Cruz, CA, USA
| | - Michael T McManus
- Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA; Diabetes Center, University of California, San Francisco, San Francisco, CA, USA; W.M. Keck Center for Noncoding RNAs, University of California, San Francisco, San Francisco, CA, USA
| | - Susan Carpenter
- Department of Molecular, Cell and Developmental Biology, University of California, Santa Cruz, Santa Cruz, CA, USA.
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14
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Miao K, Zhou L, Ba H, Li C, Gu H, Yin B, Wang J, Yang XP, Li Z, Wang DW. Transmembrane tumor necrosis factor alpha attenuates pressure-overload cardiac hypertrophy via tumor necrosis factor receptor 2. PLoS Biol 2020; 18:e3000967. [PMID: 33270628 PMCID: PMC7714153 DOI: 10.1371/journal.pbio.3000967] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 10/23/2020] [Indexed: 12/20/2022] Open
Abstract
Tumor necrosis factor-alpha (TNF-α) plays an important pathogenic role in cardiac hypertrophy and heart failure (HF); however, anti-TNF is paradoxically negative in clinical trials and even worsens HF, indicating a possible protective role of TNF-α in HF. TNF-α exists in transmembrane (tmTNF-α) and soluble (sTNF-α) forms. Herein, we found that TNF receptor 1 (TNFR1) knockout (KO) or knockdown (KD) by short hairpin RNA or small interfering RNA (siRNA) significantly alleviated cardiac hypertrophy, heart dysfunction, fibrosis, and inflammation with increased tmTNF-α expression, whereas TNFR2 KO or KD exacerbated the pathological phenomena with increased sTNF-α secretion in transverse aortic constriction (TAC)- and isoproterenol (ISO)-induced cardiac hypertrophy in vivo and in vitro, respectively, indicating the beneficial effects of TNFR2 associated with tmTNF-α. Suppressing TNF-α converting enzyme by TNF-α Protease Inhibitor-1 (TAPI-1) to increase endogenous tmTNF-α expression significantly alleviated TAC-induced cardiac hypertrophy. Importantly, direct addition of exogenous tmTNF-α into cardiomyocytes in vitro significantly reduced ISO-induced cardiac hypertrophy and transcription of the pro-inflammatory cytokines and induced proliferation. The beneficial effects of tmTNF-α were completely blocked by TNFR2 KD in H9C2 cells and TNFR2 KO in primary myocardial cells. Furthermore, we demonstrated that tmTNF-α displayed antihypertrophic and anti-inflammatory effects by activating the AKT pathway and inhibiting the nuclear factor (NF)-κB pathway via TNFR2. Our data suggest that tmTNF-α exerts cardioprotective effects via TNFR2. Specific targeting of tmTNF-α processing, rather than anti-TNF therapy, may be more useful for the treatment of hypertrophy and HF. In contrast to detrimental effects of soluble tumor necrosis factor-alpha (TNF-α) via TNFR1, this study shows that transmembrane TNF-α protects the heart by suppressing pressure overload-induced cardiac hypertrophy and inflammation via TNFR2. Targeting tmTNF-α processing may be more useful than TNF-antagonist for treatment of hypertrophy and heart failure.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Cardiomegaly/metabolism
- Cardiomegaly/physiopathology
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Knockout
- Myocytes, Cardiac/metabolism
- NF-kappa B/metabolism
- Receptors, Tumor Necrosis Factor, Type I/genetics
- Receptors, Tumor Necrosis Factor, Type I/metabolism
- Receptors, Tumor Necrosis Factor, Type II/genetics
- Receptors, Tumor Necrosis Factor, Type II/metabolism
- Receptors, Tumor Necrosis Factor, Type II/physiology
- Signal Transduction/drug effects
- Tumor Necrosis Factor-alpha/metabolism
- Tumor Necrosis Factor-alpha/physiology
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Affiliation(s)
- Kun Miao
- Division of Cardiology, Department of Internal Medicine and Department of Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiologic Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ling Zhou
- Division of Cardiology, Department of Internal Medicine and Department of Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiologic Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hongping Ba
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chenxi Li
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Haiyan Gu
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Bingjiao Yin
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jing Wang
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiang-ping Yang
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhuoya Li
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- * E-mail: (ZL); (DWW)
| | - Dao Wen Wang
- Division of Cardiology, Department of Internal Medicine and Department of Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiologic Disorders, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- * E-mail: (ZL); (DWW)
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15
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Abstract
With rapid spread of severe acute respiratory syndrome- corona virus-2 (SARS-COV-2) globally, some new aspects of the disease have been reported. Recently, it has been reported the incidence of Kawasaki-like disease among children with COVID-19. Since, children had been known to be less severely affected by the virus in part due to the higher concentration of Angiotensin converting enzyme (ACE)-2 receptor, this presentation has emerged concerns regarding the infection of children with SARS-COV2. ACE2 has anti-inflammatory, anti-fibrotic and anti-proliferative characteristics through converting angiotensin (Ag)-II to Ang (1-7). ACE2 receptor is downregulated by the SARS-COV through the spike protein of SARS-CoV (SARS-S) via a process that is tightly coupled with Tumor necrosis factor (TNF)-α production. TNF-α plays a key role in aneurysmal formation of coronary arteries in Kawasaki disease (KD). Affected children by COVID-19 with genetically-susceptible to KD might have genetically under-expression of ACE2 receptor that might further decrease the expression of ACE2 due to the downregulation of the receptor by the virus in these patients. It appears that TNF- α might be the cause and the consequence of the ACE2 receptor downregulation which results in arterial walls aneurysm. Conclusion: Genetically under-expression of ACE2 receptor in children with genetically-susceptible to KD who are infected with SARS-CoV-2 possibly further downregulates the ACE2 expression by TNF-α and leads to surge of inflammation including TNF-α and progression to Kawasaki-like disease.
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Affiliation(s)
- Hamideh Amirfakhryan
- Preventative Cardiovascular Medicine, Faculty of Health Science, University of South Wales, UK.
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16
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Hendry BM, Stafford N, Arnold AD, Sangwaiya A, Manglam V, Rosen SD, Arnold J. Hypothesis: Pentoxifylline is a potential cytokine modulator therapeutic in COVID-19 patients. Pharmacol Res Perspect 2020; 8:e00631. [PMID: 32715661 PMCID: PMC7383088 DOI: 10.1002/prp2.631] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/01/2020] [Accepted: 07/02/2020] [Indexed: 12/15/2022] Open
Abstract
We propose a new hypothesis that the established drug pentoxifylline deserves attention as a potential repurposed therapeutic for COVID-19. Pentoxifylline is an immunomodulator with anti-inflammatory properties. It is a nonselective phosphodiesterase inhibitor and through Adenosine A2A Receptor-mediated pathways reduces tumor necrosis factor alpha, interleukin 1, interleukin 6, and interferon gamma and may act to reduce tissue damage during the cytokine storm host response to SARS-CoV-2 infection. This agent has been used clinically for many years and has a favorable profile of safety and tolerability. Pre-clinical data support pentoxifylline as effective in cytokine-driven lung damage. Clinical studies of pentoxifylline in radiation and cytokine-induced lung damage in humans are positive and consistent with anti-inflammatory efficacy. Pentoxifylline is a readily available, off-patent and inexpensive drug, suitable for large-scale use including in resource-limited countries. Current trials of therapeutics are largely focused on the inhibition of viral processes. We advocate urgent randomized trials of pentoxifylline for COVID-19 as a complementary approach to target the host responses.
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Affiliation(s)
- Bruce M. Hendry
- Renal SciencesDepartment of Inflammation BiologyKing’s College LondonLondonUK
| | - Nina Stafford
- Department of GastroenterologyEaling HospitalLondon North West University Healthcare NHS TrustSouthallUK
| | - Ahran D. Arnold
- National Heart and Lung InstituteImperial College LondonLondonUK
| | - Arvind Sangwaiya
- Department of GastroenterologyEaling HospitalLondon North West University Healthcare NHS TrustSouthallUK
| | - Vijay Manglam
- Department of GastroenterologyEaling HospitalLondon North West University Healthcare NHS TrustSouthallUK
| | - Stuart D. Rosen
- National Heart and Lung InstituteImperial College LondonLondonUK
| | - Jayantha Arnold
- Department of GastroenterologyEaling HospitalLondon North West University Healthcare NHS TrustSouthallUK
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17
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Ismail KA, Hawash YA, Saber T, Eed EM, Khalifa AS, Alsharif KF, Alghamdi SA, Khalifa AM, Khalifa OM, Althubiti HK, Alsofyani GM. Microsporidia infection in patients with autoimmune diseases. Indian J Med Microbiol 2020; 38:409-414. [PMID: 33154255 DOI: 10.4103/ijmm.ijmm_20_325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Purpose Microsporidium is a spore-forming intracellular parasite that affects a wide range of hosts including humans. The tumor necrosis factor alpha (TNF-α) plays a key role in the immunity to infection with microsporidia. Recently, the TNF-α antagonists have proven successful in treating variable autoimmune diseases. In the current study, we aimed to investigate the impact of using TNF-α antagonists as a therapeutic regimen in the prevalence of infections with microsporidia. Materials and Methods Diarrheal patients with distinct autoimmune diseases (n = 100) were assigned to the study. Patients taking anti-TNF-α medications (n = 60) were allocated to Group 1A and those undergoing non-TNF-α inhibitor treatment (n = 40) to Group 1B. Furthermore, patients with diarrhea without autoimmune disorders (n = 20) were allocated as controls. Stool specimens, 3 per patient, were collected and microscopically examined for microsporidia spores. A microsporidia-specific stool polymerase chain reaction was used to confirm the microscopic findings. Results Microsporidia infection was identified in 28.3% (17/60), 10% (4/40), and in 5% (1/20) of patients in Group 1A, Group 1B, and in the control group, respectively. Overall, infection was significantly high in cases compared to the controls and in patients receiving TNF-α antagonists compared to patients not given TNF-α inhibitors (P < 0.05). Finally, infection was significantly higher in cases treated with TNF-α antagonists for ≥2 months compared to cases treated for <2 months of duration (P < 0.05). Conclusion There was a significant increase in microsporidia infection in autoimmune disease patients undergoing treatment with TNF-α antagonists, and the duration of treatment is one of the risk factors. The study highlights the importance of microsporidia testing in immunocompromised patients, particularly those undergoing treatment with anti-TNF-α drugs and emphasises the need for awareness among clinicians regarding this opportunistic parasite.
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Affiliation(s)
- Khadiga Ahmed Ismail
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Department of Medical Parasitology, Faculty of Medicine, Ain-Shams University, Cairo, Egypt
| | - Yousry A Hawash
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Department of Molecular and Clinical Parasitology, National Liver Institute, Menoufia University, Menoufia, Egypt
| | - Taisir Saber
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Department of Medical Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Emad M Eed
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia; Department of Medical Microbiology and Immunology, Faculty of Medicine, Menoufia University, Menoufia, Egypt
| | - Amany S Khalifa
- Department of Clinical Pathology, Faculty of Medicine, Menoufia University, Menoufia, Egypt; Department of Medical Microbiology and Immunology, Faculty of Pharmacy, Taif University, Taif, Saudi Arabia
| | - Khalaf F Alsharif
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Saleh A Alghamdi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Ahmed M Khalifa
- Department of Forensic and Toxicology, Faculty of Medicine, Ain-Shams University, Cairo, Egypt
| | - Osama Mahmoud Khalifa
- Department of Internal Medicine, Faculty of Medicine, Ain-Shams University, Cairo, Egypt
| | - Hatem K Althubiti
- Department of Medical Parasitology, Faculty of Medicine, Ain-Shams University, Cairo, Egypt
| | - Gala M Alsofyani
- Department of Medical Parasitology, Faculty of Medicine, Ain-Shams University, Cairo, Egypt
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18
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Sperry MM, Yu YH, Kartha S, Ghimire P, Welch RL, Winkelstein BA, Granquist EJ. Intra-articular etanercept attenuates pain and hypoxia from TMJ loading in the rat. J Orthop Res 2020; 38:1316-1326. [PMID: 31903618 PMCID: PMC9118642 DOI: 10.1002/jor.24581] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 12/28/2019] [Indexed: 02/04/2023]
Abstract
Mechanical overloading of the temporomandibular joint (TMJ) and biochemical changes, like inflammation and hypoxia, contribute to cartilage degeneration and pain associated with osteoarthritis (OA). Yet, how overloading contributes to early dysregulation of chondrocytes is not understood, limiting the development of diagnostics and treatments for TMJ OA. Hypoxia-inducible factors (HIF)-1α/2α in chondrocytes were evaluated at Days 8 and 15 in a rat TMJ pain model induced by jaw loading (1 h/day for 7 days) using immunohistochemistry and compared between cases that induce persistent (3.5 N), acute (2 N), or no (0 N) sensitivity. Hypoxia was measured on Day 8 by immunolabeling of the tracer EF5 and 18 F-EF5 PET imaging. To assess the role of tumor necrosis factor (TNF) in painful TMJ loading, intra-articular etanercept was given before loading. Orofacial sensitivity was evaluated during and after loading. Facial grimace, TNF-α, HIF-2α, and hypoxia levels in the TMJ were measured after loading. HIF-2α was elevated (P = .03) after 3.5 N loading at Day 8, but HIF-1α was unchanged. EF5 uptake increased on Day 8 in the 3.5 N group (P < .048) by tissue assay and 18 F-EF5 PET. At Day 8, both HIF-2α (P = .01) and EF5 uptake (P = .005) were correlated with loading magnitude. Etanercept attenuated sensitivity (P < .01) and the facial grimace on Day 7 (P = .01). It also reduced (P < .01) HIF-2α and EF5 uptake on Day 8; but TNF-α levels were not different from controls at that time. Findings suggest that TMJ loading that induces persistent sensitivity upregulates the catabolic factor HIF-2α and reduces oxygen levels in the cartilage, which may be TNF-driven.
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Affiliation(s)
| | - Ya-Hsin Yu
- Department of Endodontics, University of Pennsylvania School of Dental Medicine
| | - Sonia Kartha
- Department of Bioengineering, University of Pennsylvania
| | | | | | - Beth A. Winkelstein
- Department of Bioengineering, University of Pennsylvania
- Department of Neurosurgery, University of Pennsylvania
| | - Eric J. Granquist
- Oral & Maxillofacial Surgery, University of Pennsylvania School of Medicine
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19
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Wang Y, Zhang H, Chen Q, Jiao F, Shi C, Pei M, Lv J, Zhang H, Wang L, Gong Z. TNF-α/HMGB1 inflammation signalling pathway regulates pyroptosis during liver failure and acute kidney injury. Cell Prolif 2020; 53:e12829. [PMID: 32419317 PMCID: PMC7309595 DOI: 10.1111/cpr.12829] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/21/2020] [Accepted: 04/24/2020] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE Acute kidney injury (AKI) is a common complication of acute liver failure (ALF). Pyroptosis is a necrosis type related to inflammation. This study aimed to investigate the role of TNF-α/HMGB1 pathway in pyroptosis during ALF and AKI. METHODS An ALF and AKI mouse model was generated using LPS/D-Gal, and a TNF-α inhibitor, CC-5013, was used to treat the mice. THP-1 cells were induced to differentiate into M1 macrophages, then challenged with either CC-5013 or an HMGB1 inhibitor, glycyrrhizin. pLVX-mCMVZsGreen-PGK-Puros plasmids containing TNF-α wild-type (WT), mutation A94T of TNF-α and mutation P84L of TNF-α were transfected into M1 macrophages. RESULTS Treatment with CC-5013 decreased the activation of TNF-α/HMGB1 pathway and pyroptosis in the treated mice and cells compared with the control mice and cells. CC-5013 also ameliorated liver and kidney pathological changes and improved liver and renal functions in treated mice, and the number of M1 macrophages in the liver and kidney tissues also decreased. The activation of TNF-α/HMGB1 pathway and pyroptosis increased in the M1 macrophage group compared with the normal group. Similarly, the activation of TNF-α/HMGB1 pathway and pyroptosis in the LPS + WT group also increased. By contrast, the activation of the TNF-α/HMGB1 pathway and pyroptosis decreased in the LPS + A94T and LPS + P84L groups. Moreover, glycyrrhizin inhibited pyroptosis. CONCLUSION The TNF-α/HMGB1 inflammation signalling pathway plays an important role in pyroptosis during ALF and AKI.
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Affiliation(s)
- Yao Wang
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
| | - Haiyue Zhang
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
| | - Qian Chen
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
| | - Fangzhou Jiao
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
| | - Chunxia Shi
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
| | - Maohua Pei
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
| | - Jian Lv
- Department of PharmacyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Hong Zhang
- Department of PharmacyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Luwen Wang
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
| | - Zuojiong Gong
- Department of Infectious DiseasesRenmin Hospital of Wuhan UniversityWuhanChina
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20
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Yoshimatsu Y, Kimuro S, Pauty J, Takagaki K, Nomiyama S, Inagawa A, Maeda K, Podyma-Inoue KA, Kajiya K, Matsunaga YT, Watabe T. TGF-beta and TNF-alpha cooperatively induce mesenchymal transition of lymphatic endothelial cells via activation of Activin signals. PLoS One 2020; 15:e0232356. [PMID: 32357159 PMCID: PMC7194440 DOI: 10.1371/journal.pone.0232356] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 04/13/2020] [Indexed: 12/12/2022] Open
Abstract
Lymphatic systems play important roles in the maintenance of fluid homeostasis and undergo anatomical and physiological changes during inflammation and aging. While lymphatic endothelial cells (LECs) undergo mesenchymal transition in response to transforming growth factor-β (TGF-β), the molecular mechanisms underlying endothelial-to-mesenchymal transition (EndMT) of LECs remain largely unknown. In this study, we examined the effect of TGF-β2 and tumor necrosis factor-α (TNF-α), an inflammatory cytokine, on EndMT using human skin-derived lymphatic endothelial cells (HDLECs). TGF-β2-treated HDLECs showed increased expression of SM22α, a mesenchymal cell marker accompanied by increased cell motility and vascular permeability, suggesting HDLECs to undergo EndMT. Our data also revealed that TNF-α could enhance TGF-β2-induced EndMT of HDLECs. Furthermore, both cytokines induced the production of Activin A while decreasing the expression of its inhibitory molecule Follistatin, and thus enhancing EndMT. Finally, we demonstrated that human dermal lymphatic vessels underwent EndMT during aging, characterized by double immunostaining for LYVE1 and SM22α. These results suggest that both TGF-β and TNF-α signals play a central role in EndMT of LECs and could be potential targets for senile edema.
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Affiliation(s)
- Yasuhiro Yoshimatsu
- Department of Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
- Division of Pharmacology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Shiori Kimuro
- Department of Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Joris Pauty
- Institute of Industrial Science, The University of Tokyo, Tokyo, Japan
| | | | | | - Akihiko Inagawa
- Department of Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kentaro Maeda
- Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Katarzyna A. Podyma-Inoue
- Department of Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | | | | | - Tetsuro Watabe
- Department of Biochemistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
- * E-mail:
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21
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Bazhanova ED, Anisimov VN. [FAS- and TNF-dependent ways participation in apoptosis mechanisms in hypotalumus in physiological and pathological aging.]. Adv Gerontol 2020; 33:34-39. [PMID: 32362081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The cell resistance to apoptosis can be related to the activity of cytokine-dependent signaling. So, the aim of the work is to investigate the mechanisms of cytokine-dependent FAS/TNF-mediated regulation of apoptosis of neurosecretory cells in the physiological and pathological (overexpression of the oncogene HER-2/Neu) aging. HER2/Neu transgenic accelerated aged mice of different ages and wild type FVB/N were examined. The apoptosis level of neurons in hypothalamic sections (supraoptic and paraventricular nuclei) (TUNEL) and expression of caspase-8, CD178 (FASL), FAS, FADD, TRADD (Western blotting) was determined. Participation of the proinflammatory component in the aging process is shown. FAS, adapter proteins associated with the death domain (FADD and TRADD), caspase-8 expression is activated in hypothalamus in FVB/N mice (wild type) during aging, and it correlates with an increase in the apoptosis level. HER-2/Neu expression leads to the extrinsic apoptotic pathway suppression. In this case, the reception of an apoptotic signal (FAS-receptor expression) and its further transmission (expression of FADD and TRADD) is suppressed. However, in young transgenic mice, increased expression of TRADD can activate one of the survival ways - NF-κB, ERK or PI3K-AKT cascade. Thus, the HER-2/Neu tyrosine kinase receptor plays a role in the mechanism of cell resistance to age-dependent apoptosis, and the FAS/TNF-signaling pathway is one of the targets of HER-2/Neu.
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Affiliation(s)
- E D Bazhanova
- Institute of Toxicology, Federal Medico-Biologocal Agency, 1 Bekhtereva str., St. Petersburg 192019, Russian Federation, e-mail:
- I.M.Sechenov Institute of Evolutionary Physiology and Biochemistry, 44 Thoreza pr., St. Petersburg 194223, Russian Federation
- Astrakhan State University, 20a Tatishcheva str., Astrakhan 414040, Russian Federatin
| | - V N Anisimov
- N.N.Petrov National Medical Research Center of Oncology, 68 Leningradskaya str., Pesochny, St. Petersburg 197758, Russian Federation, e-mail:
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22
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Abstract
Periodontitis is an inflammatory disease involving the destruction of both soft and hard tissue in the periodontal region. Although dysbiosis of the local microbial community initiates local inflammation, over-activation of the host immune response directly activates osteoclastic activity and alveolar bone loss. Many studies have reported on the cytokine network involved in periodontitis and its crucial and pleiotropic effect on the recruitment of specific immunocytes, control of pathobionts and induction or suppression of osteoclastic activity. Nonetheless, particularities in the stimulation of pathogens in the oral cavity that lead to the specific and complex periodontal cytokine network are far from clarified. Thus, in this review, we begin with an up-to-date aetiological hypothesis of periodontal disease and summarize the roles of cytokines in the host immune response. In addition, we also summarize the latest cytokine-related therapeutic measures for periodontal disease.
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Affiliation(s)
- Weiyi Pan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qingxuan Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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23
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Mariani MK, Dasmeh P, Fortin A, Caron E, Kalamujic M, Harrison AN, Hotea DI, Kasumba DM, Cervantes-Ortiz SL, Mukawera E, Serohijos AWR, Grandvaux N. The Combination of IFN β and TNF Induces an Antiviral and Immunoregulatory Program via Non-Canonical Pathways Involving STAT2 and IRF9. Cells 2019; 8:cells8080919. [PMID: 31426476 PMCID: PMC6721756 DOI: 10.3390/cells8080919] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/12/2019] [Accepted: 08/14/2019] [Indexed: 12/21/2022] Open
Abstract
Interferon (IFN) β and Tumor Necrosis Factor (TNF) are key players in immunity against viruses. Compelling evidence has shown that the antiviral and inflammatory transcriptional response induced by IFNβ is reprogrammed by crosstalk with TNF. IFNβ mainly induces interferon-stimulated genes by the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway involving the canonical ISGF3 transcriptional complex, composed of STAT1, STAT2, and IRF9. The signaling pathways engaged downstream of the combination of IFNβ and TNF remain elusive, but previous observations suggested the existence of a response independent of STAT1. Here, using genome-wide transcriptional analysis by RNASeq, we observed a broad antiviral and immunoregulatory response initiated in the absence of STAT1 upon IFNβ and TNF costimulation. Additional stratification of this transcriptional response revealed that STAT2 and IRF9 mediate the expression of a wide spectrum of genes. While a subset of genes was regulated by the concerted action of STAT2 and IRF9, other gene sets were independently regulated by STAT2 or IRF9. Collectively, our data supports a model in which STAT2 and IRF9 act through non-canonical parallel pathways to regulate distinct pool of antiviral and immunoregulatory genes in conditions with elevated levels of both IFNβ and TNF.
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Affiliation(s)
- Mélissa K Mariani
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Pouria Dasmeh
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Centre Robert Cedergren en Bioinformatique et Génomique, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Audray Fortin
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Elise Caron
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Mario Kalamujic
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Alexander N Harrison
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Diana I Hotea
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Dacquin M Kasumba
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Sandra L Cervantes-Ortiz
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Espérance Mukawera
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada
| | - Adrian W R Serohijos
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
- Centre Robert Cedergren en Bioinformatique et Génomique, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Nathalie Grandvaux
- CRCHUM-Centre Hospitalier de l'Université de Montréal, Montréal, QC H2X 0A9, Canada.
- Department of Biochemistry and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada.
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24
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Kim Y, Allen E, Baird LA, Symer EM, Korkmaz FT, Na E, Odom CV, Jones MR, Mizgerd JP, Traber KE, Quinton LJ. NF-κB RelA Is Required for Hepatoprotection during Pneumonia and Sepsis. Infect Immun 2019; 87:e00132-19. [PMID: 31160364 PMCID: PMC6652780 DOI: 10.1128/iai.00132-19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/24/2019] [Indexed: 12/24/2022] Open
Abstract
Pneumonia and sepsis are distinct but integrally linked public health concerns. The hepatic acute-phase response (APR), which is largely dependent on transcription factors NF-κB RelA and STAT3, is a hallmark of these pathologies and other injurious conditions. Inactivation of the APR can promote liver injury, a frequently observed organ dysfunction during sepsis. However, whether or how the acute-phase changes promote liver tissue resilience during infections is unclear. To determine the hepatoprotective role of the hepatic APR, we utilized mice bearing hepatocyte-specific deletions of either RelA or STAT3. Mice were challenged intratracheally (i.t.), intravenously (i.v.), or intraperitoneally (i.p.) with Escherichia coli, Klebsiella pneumoniae, Streptococcus pneumoniae, lipopolysaccharide (LPS), or alpha-galactosylceramide (αGalCer) to induce pneumonia, sepsis, or NKT cell activation. Liver injury was observed in RelA-null (hepRelAΔ/Δ) mice but not STAT3-null (hepSTAT3Δ/Δ) mice during pneumonia. The absence of RelA resulted in hepatotoxicity across several models of pneumonia, sepsis, and NKT cell activation. Injury was associated with increased levels of activated caspase-3 and -8 and substantial alteration of the hepatic transcriptome. Hepatotoxicity in the absence of RelA could be reversed by neutralization of tumor necrosis factor alpha (TNF-α). These results indicate the requirement of RelA-dependent inducible hepatoprotection during pneumonia and sepsis. Further, the results demonstrate that RelA-dependent gene programs are critical for maintaining liver homeostasis against TNF-α-driven immunotoxicity.
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Affiliation(s)
- Yuri Kim
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Eri Allen
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Lillia A Baird
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Elise M Symer
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Filiz T Korkmaz
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Elim Na
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Christine V Odom
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Matthew R Jones
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Joseph P Mizgerd
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Katrina E Traber
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Lee J Quinton
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
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25
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Zhang CH, Sheng JQ, Sarsaiya S, Shu FX, Liu TT, Tu XY, Ma GQ, Xu GL, Zheng HX, Zhou LF. The anti-diabetic activities, gut microbiota composition, the anti-inflammatory effects of Scutellaria-coptis herb couple against insulin resistance-model of diabetes involving the toll-like receptor 4 signaling pathway. J Ethnopharmacol 2019; 237:202-214. [PMID: 30807814 DOI: 10.1016/j.jep.2019.02.040] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 02/15/2019] [Accepted: 02/22/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Scutellaria-coptis herb couple (SC) is one of the well-known herb couples in many traditional Chinese compound formulas used for the treatment of diabetes mellitus (DM), which has been used to treat DM for thousands of years in China. AIM OF THE STUDY Few studies have confirmed in detail the anti-diabetic activities of SC in vivo and in vitro. The present investigations aimed to evaluate the anti-diabetic activity of SC in type 2 diabetic KK-Ay mice and in RAW264.7 macrophages to understand its possible mechanism. MATERIALS AND METHODS High-performance liquid chromatography with ultraviolet detection (HPLC-UV) and LC-LTQ-Orbitrap Pro mass spectrometry were used to analyze the active ingredients of SC extracts and control the quality. A type 2 diabetic KK-Ay mice model was established by high-fat diet. Body weight, fasting blood glucose levels, fasting blood insulin levels, glycosylated hemoglobin and glycosylated serum protein were measured. The effects of SC on total cholesterol (TC), high-density lipoprotein (HDL) and triglyceride (TG) levels were examined. The lipopolysaccharide (LPS), interleukin-6 (IL-6) and tumour necrosis factor alpha (TNF-α) levels were measured. Gut microbial communities were assayed by polymerase chain reaction (PCR) and PCR-denaturing gradient gel electrophoresis (PCR-DGGE) methods. The expressions of Toll-like receptor 4 (TLR4) and MyD88 protein in the colons were measured by western blot. In RAW264.7 macrophages, IL-6, TNF-α, TLR4 and MyD88 protein levels were measured by enzyme-linked immunosorbent assay (ELISA) kits or western blot, and the mRNA expression of IL-6, TNF-α and TLR4 was examined by the real time PCR. RESULTS The present results showed that the SC significantly increased blood HDL and significantly reduced fasting blood glucose, fasting blood insulin, glycosylated hemoglobin, glycosylated serum protein, TC, TG, LPS, IL-6 and TNF-α levels (P < 0.05 or P < 0.01) in type-2 diabetic KK-Ay mice. Furthermore, SC could regulate the structure of intestinal flora. Additionally, the expressions of TLR4 and MyD88 protein in the colons were significantly decreased in the model group (P < 0.05 or P < 0.01). However, SC had no significant effect on weight gain. In RAW264.7 macrophages, SC containing serum (SC-CS) (5%, 10% and 20%) significantly decreased IL-6, TNF-α, TLR4 and MyD88 protein levels and the mRNA expression of IL-6, TNF-α and TLR4 (P < 0.05 or P < 0.01). CONCLUSIONS The anti-diabetic effects of SC were attributed to its regulation of intestinal flora and anti-inflammation involving the TLR4 signaling pathway. These findings provide a new insight into the anti-diabetic application for SC in clinical settings and display the potential of SC in the treatment of DM.
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Affiliation(s)
- Chang-Hua Zhang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China; Key Laboratory of Pharmacology of Traditional Chinese Medicine in Jiangxi, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China
| | - Jun-Qing Sheng
- College of Life Science, Nanchang University, Nanchang 330031, PR China.
| | - Surendra Sarsaiya
- Key Laboratory of Basic Pharmacology and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563003, PR China; Department of Microbiology, Sri Satya Sai University of Technology and Medical Sciences, Sehore, Madhya Pradesh, India
| | - Fu-Xing Shu
- Bioresource Institute Of Healthy Utilization, Zunyi Medical University, Zunyi, Guizhou 563000, PR China
| | - Tong-Tong Liu
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China
| | - Xiu-Ying Tu
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China
| | - Guang-Qiang Ma
- College of Life Science, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China
| | - Guo-Liang Xu
- Research Center for Differentiation and Development of Basic Theory of TCM, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China
| | - Hong-Xiang Zheng
- College of Humanities of TCM, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China
| | - Li-Fen Zhou
- Large precise instruments shared services center of TCM, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330004, PR China
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Zhao S, Sheng D, Shi R, Jing Y, Jiang J, Meng Y, Fu Z, Hou X, Liu W, Yang X, Li R, Han Z, Wei L. Lipopolysaccharide protects against acetaminophen-induced hepatotoxicity by reducing oxidative stress via the TNF-α/TNFR1 pathway. Biochem Biophys Res Commun 2019; 513:623-630. [PMID: 30981501 DOI: 10.1016/j.bbrc.2019.03.181] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 03/27/2019] [Indexed: 12/26/2022]
Abstract
Robust evidence suggested that gut-derived lipopolysaccharide (LPS) plays a significant role in various liver injury diseases; however, the role of gut-derived LPS in acetaminophen (APAP) overdose-induced acute liver injury remains unclear. The present study aimed to investigate the effect of gut-derived LPS on APAP-induced liver injury. Our results revealed that reduction of gut-derived LPS using multiple antibiotics could significantly exacerbate APAP-induced liver injury and increase mortality in mice. By contrast, pretreatment with exogenous LPS could reverse APAP-induced liver hepatotoxicity in mice and rats. We observed that TNF-α secretion in the liver was significantly increased after LPS pretreatment. In addition, depletion of TNF-α or TNFR1 inhibited the protective effects of LPS against APAP-induced hepatotoxicity, which indicated that the TNF-α/TNFR1 pathway was required to protect against APAP-induced liver injury. Mechanistically, LPS reduces oxidative stress by upregulating the expression of hepatic GSH, reducing MDA levels in liver tissues, and upregulating the expression of several antioxidant genes after APAP injection. However, the production of hepatic GSH was not enhanced in the liver tissues of rats lacking TNF-α or TNFR1 and MDA levels were not reduced after LPS and APAP co-treatment. The above results suggested LPS alleviated APAP-induced oxidative stress via the TNF-α/TNFR1 pathway.
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Affiliation(s)
- Shanmin Zhao
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China; Laboratory Animal Centre of Second Military Medical University, Shanghai, 200438, China
| | - Dandan Sheng
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Rongyu Shi
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China; Fujian Medical University, Fuzhou, Fujian, 350108, China
| | - Yingying Jing
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Jinghua Jiang
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Yan Meng
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Zheng Fu
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Xiaojuan Hou
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Wenting Liu
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Xue Yang
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Rong Li
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China
| | - Zhipeng Han
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China.
| | - Lixin Wei
- Tumor Immunology and Gene Therapy Center, Third Affiliated Hospital of Second Military Medical University, Shanghai, 200438, China.
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Ren X, Keeney JTR, Miriyala S, Noel T, Powell DK, Chaiswing L, Bondada S, St Clair DK, Butterfield DA. The triangle of death of neurons: Oxidative damage, mitochondrial dysfunction, and loss of choline-containing biomolecules in brains of mice treated with doxorubicin. Advanced insights into mechanisms of chemotherapy induced cognitive impairment ("chemobrain") involving TNF-α. Free Radic Biol Med 2019; 134:1-8. [PMID: 30593843 PMCID: PMC6588453 DOI: 10.1016/j.freeradbiomed.2018.12.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 12/23/2018] [Indexed: 10/27/2022]
Abstract
Cancer treatments are developing fast and the number of cancer survivors could arise to 20 million in United State by 2025. However, a large fraction of cancer survivors demonstrate cognitive dysfunction and associated decreased quality of life both shortly, and often long-term, after chemotherapy treatment. The etiologies of chemotherapy induced cognitive impairment (CICI) are complicated, made more so by the fact that many anti-cancer drugs cannot cross the blood-brain barrier (BBB). Multiple related factors and confounders lead to difficulties in determining the underlying mechanisms. Chemotherapy induced, oxidative stress-mediated tumor necrosis factor-alpha (TNF-α) elevation was considered as one of the main candidate mechanisms underlying CICI. Doxorubicin (Dox) is a prototypical reactive oxygen species (ROS)-generating chemotherapeutic agent used to treat solid tumors and lymphomas as part of multi-drug chemotherapeutic regimens. We previously reported that peripheral Dox-administration leads to plasma protein damage and elevation of TNF-α in plasma and brain of mice. In the present study, we used TNF-α null (TNFKO) mice to investigate the role of TNF-α in Dox-induced, oxidative stress-mediated alterations in brain. We report that Dox-induced oxidative stress in brain is ameliorated and brain mitochondrial function assessed by the Seahorse-determined oxygen consumption rate (OCR) is preserved in brains of TNFKO mice. Further, we show that Dox-decreased the level of hippocampal choline-containing compounds and brain phospholipases activity are partially protected in TNFKO group in MRS study. Our results provide strong evidence that Dox-targeted mitochondrial damage and levels of brain choline-containing metabolites, as well as phospholipases changes decreased in the CNS are associated with oxidative stress mediated by TNF-α. These results are consistent with the notion that oxidative stress and elevated TNF-α in brain underlie the damage to mitochondria and other pathological changes that lead to CICI. The results are discussed with reference to our identifying a potential therapeutic target to protect against cognitive problems after chemotherapy.
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Affiliation(s)
- Xiaojia Ren
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Jeriel T R Keeney
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA
| | - Sumitra Miriyala
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky 40536, USA
| | - Teresa Noel
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky 40536, USA
| | - David K Powell
- Magnetic Resonance Imaging and Spectroscopy Center, University of Kentucky Medical Center, Lexington, KY 40536, USA
| | - Luksana Chaiswing
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky 40536, USA
| | - Subbarao Bondada
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536 USA, USA; Department of Microbiology, Immunology & Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA
| | - Daret K St Clair
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky 40536, USA; Department of Radiation Medicine, University of Kentucky, Lexington, KY 40536, USA; Markey Cancer Center, University of Kentucky, Lexington, KY 40536 USA, USA
| | - D Allan Butterfield
- Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA; Markey Cancer Center, University of Kentucky, Lexington, KY 40536 USA, USA; Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA.
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Choi J, Kim J, Min DY, Jung E, Lim Y, Shin SY, Lee YH. Inhibition of TNFα-induced interleukin-6 gene expression by barley (Hordeum vulgare) ethanol extract in BV-2 microglia. Genes Genomics 2019; 41:557-566. [PMID: 30796706 DOI: 10.1007/s13258-018-00781-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 12/26/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Inflammation in the central nervous system is closely associated with pathological neurodegenerative diseases as well as psychiatric disorders. Prolonged activation of microglia can produce many inflammatory mediators, which may result in pathological neurotoxic side effects. Interleukin (IL)-6 serves as a hallmark of the injured brain. OBJECTIVE Whole grains are known to contain many bioactive components. However, little information is available about anti-neuroinflammatory effects of grains in the CNS. This study aims to investigate the effect of Hordeum vulgare ethanol extract (HVE) on the suppression of IL-6 expression in BV2 microglia. METHODS Inhibitory effects of HVE on IL-6 expression were analyzed by immunoblot anaysis, immunofluoresce microscopic analysis, reverse transcription-polymerase chain reaction, and luciferase promoter reporter assay. RESULTS HVE inhibited TNFα-induced phosphorylation of IKKα/β, IκB, and p65/RelA NF-κB. TNFα-induced IL-6 mRNA expression and promoter activity were reduced by HVE. Point mutation of NF-κB-binding site within the IL-6 gene promoter abolished TNFα-induced reporter activity, whereas exogenous expression of p65 NF-κB enhanced IL-6 promoter activity. CONCLUSION NF-κB-binding site within the IL-6 promoter region is a HVE target element involved in the inhibition of TNFα-induced IL-6 gene transcription. HVE inhibits TNFα-induced IL-6 expression via suppression of NF-κB signaling in BV2 microglial cells.
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Affiliation(s)
- Jihye Choi
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Juhwan Kim
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Dong Yeong Min
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Euitaek Jung
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
| | - Yoongho Lim
- Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul, 05029, Republic of Korea
| | - Soon Young Shin
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea
- Cancer and Metabolism Institute, Konkuk University, Seoul, 05029, Republic of Korea
| | - Young Han Lee
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul, 05029, Republic of Korea.
- Cancer and Metabolism Institute, Konkuk University, Seoul, 05029, Republic of Korea.
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Virdis A, Colucci R, Bernardini N, Blandizzi C, Taddei S, Masi S. Microvascular Endothelial Dysfunction in Human Obesity: Role of TNF-α. J Clin Endocrinol Metab 2019; 104:341-348. [PMID: 30165404 DOI: 10.1210/jc.2018-00512] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/21/2018] [Indexed: 02/09/2023]
Abstract
CONTEXT Endothelium guarantees vascular homeostasis by the opposite action of substances by vasodilating/antithrombogenic and vasoconstricting/prothrombotic activities. Obesity is characterized by endothelial dysfunction associated with a condition of vascular low-grade inflammation. EVIDENCE ACQUISITION Analysis of available basic or clinical papers published in peer-reviewed international journals on microcirculation and obesity. EVIDENCE SYNTHESIS Vascular low-grade inflammation, which characterizes obesity, is secondary to abnormal production of proinflammatory cytokines, including TNF-α. TNF-α, generated either in small vessels or within the perivascular adipose tissue (PVAT) of patients with obesity, stimulates reactive oxygen species generation, mainly through NAD(P)H oxidase activation, which in turn reduces nitric oxide (NO) availability. These aspects are highlighted by the insulin resistance status and macronutrient intake that characterize the obesity condition. Oxidant excess has also been proposed as a mechanism whereby TNF-α interferes with the endothelin-1/NO system at the level of small vessels from patients with obesity. CONCLUSIONS In obesity, microvasculature from visceral fat is an important source of low-grade inflammation and oxidative stress that, together with the PVAT, directly contribute to vascular changes, favoring the development and acceleration of the vascular atherothrombotic process in this clinical condition.
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Affiliation(s)
- Agostino Virdis
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Rocchina Colucci
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Nunzia Bernardini
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Corrado Blandizzi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Stefano Taddei
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Stefano Masi
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
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Rahimova N, Babazada H, Higuchi Y, Yamashita F, Hashida M. Development of mKO2 fusion proteins for real-time imaging and mechanistic investigation of the degradation kinetics of human IκBα in living cells. Biochim Biophys Acta Mol Cell Res 2019; 1866:190-198. [PMID: 30391277 DOI: 10.1016/j.bbamcr.2018.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 10/03/2018] [Accepted: 10/28/2018] [Indexed: 12/11/2022]
Abstract
In resting cells, the nuclear factor kappa B (NF-κB) family of transcription factors is stabilized by complexation with the cytoplasmic inhibitor of kappa B alpha (IκBα). Extracellular stimuli, such as tumor necrosis factor alpha (TNFα) or bacterial lipopolysaccharide activate NF-κB through IκBα phosphorylation and ubiquitin-proteasomal degradation. Herein, we developed a novel biosensor, by fusing the monomeric fluorescent protein Kusabira-Orange 2 to IκBα (mKO2-IκBα), to study the dynamics and structure-activity relationship of IκBα degradation. Site-specific deletion studies on the IκBα sequence revealed that the C-terminal PEST domain is required in signal-induced proteasomal degradation of IκBα and functions independently from ankyrin repeats. Using deletion mutants, we show that IκBα ankyrin repeats do not affect IκBα degradability but affect its degradation rate. We demonstrate, by both real-time confocal microscopy and western blot analysis, that the half-life of mKO2-IκBα in response to TNFα is approximately 35 min, which is similar to the half-life of endogenous IκBα. Using this biosensor we also show that selective proteasome inhibitors, such as lactacystin and MG132, inhibit degradation and affect the kinetics of IκBα in a dose-dependent manner. The techniques described here can have a range of possible applications, such as facilitating studies associated with IκBα dynamics and biochemical characteristics, as well as the screening of potential proteasome inhibitors.
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Affiliation(s)
- Nilufar Rahimova
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hasan Babazada
- Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania, 312 John Morgan Building, 3620 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Yuriko Higuchi
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Fumiyoshi Yamashita
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mitsuru Hashida
- Department of Drug Delivery Research, Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan; Institute for Integrated Cell-Material Sciences, Kyoto University, Yoshidaushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan.
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31
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Buttó LF, Jia LG, Arseneau KO, Tamagawa H, Rodriguez-Palacios A, Li Z, De Salvo C, Pizarro TT, Bamias G, Cominelli F. Death-Domain-Receptor 3 Deletion Normalizes Inflammatory Gene Expression and Prevents Ileitis in Experimental Crohn's Disease. Inflamm Bowel Dis 2019; 25:14-26. [PMID: 30295722 PMCID: PMC6290789 DOI: 10.1093/ibd/izy305] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Indexed: 12/11/2022]
Abstract
Background TNF-like cytokine 1A (TL1A) and its functional receptor, death-domain-receptor-3 (DR3), are multifunctional mediators of effector and regulatory immunity. We aimed to evaluate the functional role and therapeutic potential of TL1A/DR3 signaling in Crohn's disease-like ileitis. Methods Ileitis-prone SAMP1/YitFc (SAMP) and TNFΔARE/+ mice were rendered deficient for DR3 or TL1A by microsatellite marker-assisted backcrossing. Pathological and immunological characteristics were compared between control and knockout mice, and mucosal immunophenotype was analyzed by Nanostring microarray assay. The therapeutic effect of pharmacological TL1A neutralization was also investigated. Results DR3 deficiency was associated with restoration of a homeostatic mucosal immunostat in SAMP mice through the regulation of several pro- and anti-inflammatory genes. This led to suppression of effector immunity, amelioration of ileitis severity, and compromised ability of either unfractionated CD4+ or CD4+CD45RBhi mucosal lymphocytes to transfer ileitis to severe combined immunodeficient mice recipients. TNF-driven ileitis was also prevented in TNFΔARE/+xDR3-/- mice, in association with decreased expression of the pro-inflammatory cytokines TNF and IFN-γ. In contrast to DR3, TL1A was dispensable for the development of ileitis although it affected the kinetics of inflammation, as TNFΔARE/+xTL1A-/- demonstrated delayed onset of inflammation, whereas administration of a neutralizing, anti-TL1A antibody ameliorated early but not late TNFΔARE/+ ileitis. Conclusion We found a prominent pro-inflammatory role of DR3 in chronic ileitis, which is only partially mediated via interaction with TL1A, raising the possibility for additional DR3 ligands. Death-domain-receptor-3 appears to be a master regulator of mucosal homeostasis and inflammation and may represent a candidate therapeutic target for chronic inflammatory conditions of the bowel.
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Affiliation(s)
- Ludovica F Buttó
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Li-Guo Jia
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Kristen O Arseneau
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | | | - Alex Rodriguez-Palacios
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Zhaodong Li
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Carlo De Salvo
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Theresa T Pizarro
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Giorgos Bamias
- GI-Unit, 3rd Academic Department of Internal Medicine, National and Kapodistrian University of Athens, Sotiria Hospital, Athens, Greece
| | - Fabio Cominelli
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
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Van Quickelberghe E, De Sutter D, van Loo G, Eyckerman S, Gevaert K. A protein-protein interaction map of the TNF-induced NF-κB signal transduction pathway. Sci Data 2018; 5:180289. [PMID: 30561431 PMCID: PMC6298254 DOI: 10.1038/sdata.2018.289] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 10/26/2018] [Indexed: 12/12/2022] Open
Abstract
Tumor Necrosis Factor (TNF) has a crucial role in inflammation, cell proliferation and cell death. Dysregulation of TNF receptor 1 (TNFR1)-induced Nuclear Factor-kappa B (NF-κB) signaling leads to chronic inflammation and is associated with several human inflammatory pathologies. Hence, TNF neutralization suppresses inflammation and attenuates inflammatory pathology. However, despite its beneficial effects, anti-TNF therapy suffers from efficacy issues and severe immune side effects. There is thus an urging need to identify novel targets for pharmaceutical intervention in the NF-κB signaling pathway. Here, we present a protein-protein interaction dataset of the TNFR1-induced signaling pathway. For this, we used Virotrap, a novel method for studying protein complexes without disrupting the cellular integrity, on 12 central proteins controlling NF-κB and cell death signaling, both under resting conditions as well as upon TNF stimulation. Our dataset reveals dynamic interactions in TNFR1-induced NF-κB signaling and identifies both known as well as novel interactors that may help to further unravel the molecular mechanisms steering TNF-induced inflammatory signaling and pathology.
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Affiliation(s)
- Emmy Van Quickelberghe
- VIB Center for Medical Biotechnology, B-9000 Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, B-9000 Ghent, Belgium
| | - Delphine De Sutter
- VIB Center for Medical Biotechnology, B-9000 Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, B-9000 Ghent, Belgium
| | - Geert van Loo
- VIB Center for Inflammation Research, B-9052 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, B-9052 Ghent, Belgium
| | - Sven Eyckerman
- VIB Center for Medical Biotechnology, B-9000 Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, B-9000 Ghent, Belgium
| | - Kris Gevaert
- VIB Center for Medical Biotechnology, B-9000 Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, B-9000 Ghent, Belgium
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Hernandez Bel L, Hernández Garfella ML, Chiarri Toumit C, Valenzuela Oñate C. Anti-tumour necrosis factor-induced cutaneous leishmaniasis in patient with psoriatic arthritis and uveitis. Arch Soc Esp Oftalmol (Engl Ed) 2018; 93:621-622. [PMID: 30100239 DOI: 10.1016/j.oftal.2018.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 06/30/2018] [Indexed: 06/08/2023]
Affiliation(s)
- L Hernandez Bel
- Servicio de Oftalmología, Hospital General de Valencia, Valencia, España.
| | | | - C Chiarri Toumit
- Servicio de Oftalmología, Hospital General de Valencia, Valencia, España
| | - C Valenzuela Oñate
- Servicio de Dermatología, Hospital General de Valencia, Valencia, España
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Wang YC, Wang C, Liu N, Cai C, Liu W, Xu LL. [Effect of TNF-α on the ability of stem cells from human exfoliated deciduous teeth to promote osteoclastogenesis]. Shanghai Kou Qiang Yi Xue 2018; 27:449-454. [PMID: 30680384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
PURPOSE To investigate the effect of tumor necrosis factor-α (TNF-α) on the ability of stem cells from human exfoliated deciduous teeth (SHED) to promote osteoclastogenesis. METHODS SHED were obtained from deciduous teeth and isolated, purified, cultured in vitro. An indirect co-culture system of SHED and osteoclast precursor peripheral blood mononuclear cells (PBMCs) was established. The expression of osteoclastic gene from PBMCs and NF-κB from SHED were determined after treatment with TNF-α (0, 5, 10, 50, 100 ng/mL) by real-time RT-PCR and Western blot. SPSS 19.0 software package was used for statistical analysis. RESULTS Under the stimulation of 10ng/mL TNF-α, the expression of CTSK and TRAP was markedly upregulated in PBMCs. Meanwhile, the results of Western blot and real-time RT-PCR showed that the expression of cytoplasmic phosphorylated inhibitor of NF-κB α (p-IκBα) and nuclear p65 in SHED were significantly higher than that without TNF-α stimulation after 10 ng/mL TNF-α treatment. CONCLUSIONS TNF-α regulates the ability of SHED to promote osteoclastogenesis through NF-κB signal pathways.
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Affiliation(s)
- Yu-Chen Wang
- Department of Orthodontics, General Hospital of Chinese PLA. Beijing 100853, China. E-mail:
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Tsukamoto M, Suzuki K, Seta N, Takeuchi T. Increased circulating CD14brightCD16+ intermediate monocytes are regulated by TNF-α and IL-6 axis in accordance with disease activity in patients with rheumatoid arthritis. Clin Exp Rheumatol 2018; 36:540-544. [PMID: 29465348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/19/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVES Although circulating CD14brightCD16+ monocyte subsets are increased in inflammatory disease, the pathogenesis of the increase in the inflammatory condition of the cells is still unclear and the relationship to cytokines is unknown particularly in rheumatoid arthritis (RA). The purpose of this study was to investigate the influence anti-cytokine treatment has on CD14brightCD16+ monocytes in patients with RA. METHODS Thirty-two RA patients and 14 healthy volunteers (HV) were enrolled in this study. All the patients had never been treated with methotrexate (MTX) or biological agents. Peripheral blood samples and clinical information of the patients were obtained at the time of 0, 12 and 24 weeks of treatment. Peripheral blood samples were also obtained from the HV. The expression levels of CD14 and CD16 on monocytes were measured by flow cytometry (FCM). RESULTS Eight patients received anti-interleukin (IL)-6 receptor antibody, tocilizumab (TCZ) treatment alone, 12 patients received anti-tumour necrosis factor (TNF)-α antibody, adalimumab (ADA) with MTX treatment and the others received only MTX treatment. FCM analysis revealed that the proportion of CD14brightCD16+ monocytes significantly increased in patients at baseline compared with HV. The proportion of CD14brightCD16+ monocytes significantly decreased after TCZ, and ADA with MTX treatment. The proportion of intermediate monocytes was significantly and positively correlated with disease activity and it improved in accordance with the proportion of CD14brightCD16+ monocytes after inhibition of signal transduction of inflammatory cytokines. CONCLUSIONS We showed that the population of CD14brightCD16+ monocytes significantly decreased with the change of disease activity by key cytokines, IL-6 or TNF-α signal blockade in RA. This result indicates that the proportion of those monocytes is important for reflecting disease activity in RA.
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Affiliation(s)
- Masako Tsukamoto
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Katsuya Suzuki
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Noriyuki Seta
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo; and Department of Internal Medicine, Tokyo Dental College Ichikawa General Hospital, Chiba, Japan
| | - Tsutomi Takeuchi
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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Tohda Y, Iwanaga T, Uejima H, Nagasaka Y, Nakajima S. Effects of Cytokines on Oxygen Radical Production by Peripheral Blood Monocytes and Alveolar Macrophages in Patients with Lung Cancer. Tumori 2018; 82:382-5. [PMID: 8890975 DOI: 10.1177/030089169608200417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The effects of cytokines (interleukin-2, tumor necrosis factor-alpha and interferon-gamma) on the ability of peripheral blood monocytes and alveolar macrophages to produce oxygen radicals were examined by the chemiluminescence assay in patients with lung cancer. Oxygen radical production by peripheral blood monocytes before stimulation with cytokines was lower in the lung cancer group than in healthy controls, suggesting reduced immune function in lung cancer patients. However, the activity in the lung cancer group was elevated to the control level when the monocytes were stimulated by any of the three aforementioned cytokines. Oxygen radical production by alveolar macrophages did not differ significantly between nonstimulated monocytes from lung cancer patients and those from healthy controls. In the lung cancer group, stimulation of the macrophages with any of the three cytokines elevated their ability to produce oxygen radicals to the same extent as in the control group. The results suggest that stimulation of macrophages by interleukin-2, tumor necrosis factor-alpha or interferon-gamma can exert an antitumor action in patients with lung cancer.
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Affiliation(s)
- Y Tohda
- Fourth Department of Internal Medicine, Kinki University School of Medicine, Osaka, Japan
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Huang SH, Liu GW, Li JH, Xu JH, Xu DW, Zhang WQ, Huang JR. Expression of TREM-2 and its inhibitory effects on TNF-α induced inflammation in fibroblast-like synoviocytes via inhibiting p38 pathway activation. Clin Exp Rheumatol 2018; 36:185-194. [PMID: 28869414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/29/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVES It is not clear whether TREM-2 (the "triggering receptor expressed on myeloid cells 2") is expressed in fibroblast-like synovial cells (FLSs). In this study, we aimed to determine the expression of TREM-2 in rheumatoid arthritis (RA)-FLSs and explore whether and how TREM-2 modulates the function of RA-FLSs. METHODS Western blot and RT-PCR were used to detect the expression of TREM-2 in RA-FLSs, siRNA and lentivirus were used to down-regulate and up-regulate the expression of TREM-2 in RA-FLSs. Then mRNA expression of IL-1β, IL-6, and MMP-13 was determined by RT-qPCR. Protein secretion of IL-1β, IL-6, and MMP-13 in the supernatant was determined by ELISA assay; expression of cell signal transduction molecules was determined by western blot. RESULTS A: Relative to OA-FLSs, mRNA and protein expression levels of TREM-2 in RA-FLSs are significantly elevated. TREM-2 protein is mainly expressed in the cytoplasm of RA-FLSs; B: In RA, the expression of TREM-2 was reduced at first and then up-regulated after stimulation by TNF-α. TREM-2 also inhibited the activation of TNF-α induced of inflammation in RA-FLSs by the p38 pathway, which regulates the production of cytokines and matrix metalloproteinases. CONCLUSIONS TREM-2 expressed in RA-FLSs and TNF-α mediated reduction of inflammatory reactions. These phenomena indicated that TREM-2 may be a potential target in the treatment of RA.
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Affiliation(s)
- Sheng Hui Huang
- Department of Orthopaedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou; Department of Orthopaedics, the Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Gui Wang Liu
- Department of Orthopaedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou; Department of Orthopaedics and Traumatology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Jian Hua Li
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Guangdong, China
| | - Jin Huang Xu
- Department of Orthopaedics, Zengcheng District People's Hospital, Guangzhou, China
| | - Da Wei Xu
- Department of Orthopaedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wei Qiong Zhang
- Department of Orthopaedics, Zengcheng District People's Hospital, Guangzhou, China
| | - Jian Rong Huang
- Department of Orthopaedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou; Department of Orthopaedics, Zengcheng District People's Hospital, Guangzhou, China.
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Wree A, McGeough MD, Inzaugarat ME, Eguchi A, Schuster S, Johnson CD, Peña CA, Geisler LJ, Papouchado BG, Hoffman HM, Feldstein AE. NLRP3 inflammasome driven liver injury and fibrosis: Roles of IL-17 and TNF in mice. Hepatology 2018; 67:736-749. [PMID: 28902427 PMCID: PMC5849484 DOI: 10.1002/hep.29523] [Citation(s) in RCA: 172] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 07/01/2017] [Accepted: 09/08/2017] [Indexed: 12/11/2022]
Abstract
The NLRP3 inflammasome, a caspase-1 activation platform, plays a key role in the modulation of liver inflammation and fibrosis. Here, we tested the hypothesis that interleukin 17 (IL-17) and tumor necrosis factor (TNF) are key cytokines involved in amplifying and perpetuating the liver damage and fibrosis resulting from NLRP3 activation. To address this hypothesis, gain-of-function Nlrp3A350V knock-in mice were bred onto il17a and Tnf knockout backgrounds allowing for constitutive Nlrp3 activation in myeloid derived cells in mice deficient in IL-17 or TNF. Livers of Nlrp3A350V knock-in mice exhibited severe liver inflammatory changes characterized by infiltration with neutrophils, increased expression of chemokine (C-X-C motif) ligand (CXCL) 1 and CXCL2 chemokines, activated inflammatory macrophages, and elevated levels of IL-17 and TNF. Mutants with ablation of il17a signal showed fewer neutrophils when compared to intact Nlrp3A350V mutants, but still significant inflammatory changes when compared to the nonmutant il17a knockout littermates. The severe inflammatory changes associated with mutant Nlrp3 were almost completely rescued by Tnf knockout in association with a marked decrease in circulating IL-1β levels. Intact Nlrp3A350V mutants showed changes in liver fibrosis, as evidenced by morphometric quantitation of Sirius Red staining and increased mRNA levels of profibrotic genes, including connective tissue growth factor and tissue inhibitor of matrix metalloproteinase 1. Il17a lacking mutants exhibited amelioration of the aforementioned fibrosis, whereas Tnf-deficient mutants showed no signs of fibrosis when compared to littermate controls. Conclusion: Our study uncovers key roles for TNF and, to a lesser extent, IL-17 as mediators of liver inflammation and fibrosis induced by constitutive NLRP3 inflammasome activation in myeloid-derived cells. These findings may lead to therapeutic strategies aimed at halting the progression of liver injury and fibrogenesis in various liver pathogeneses driven by NLRP3 activation. (Hepatology 2018;67:736-749).
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Affiliation(s)
- Alexander Wree
- Department of Pediatrics, University of California – San Diego, La Jolla
- Department of Internal Medicine III, RWTH University Hospital Aachen, Germany
| | | | | | - Akiko Eguchi
- Department of Pediatrics, University of California – San Diego, La Jolla
| | - Susanne Schuster
- Department of Pediatrics, University of California – San Diego, La Jolla
| | - Casey D. Johnson
- Department of Pediatrics, University of California – San Diego, La Jolla
| | - Carla A. Peña
- Department of Pediatrics, University of California – San Diego, La Jolla
| | - Lukas J. Geisler
- Department of Internal Medicine III, RWTH University Hospital Aachen, Germany
| | | | - Hal M. Hoffman
- Department of Pediatrics, University of California – San Diego, La Jolla
| | - Ariel E. Feldstein
- Department of Pediatrics, University of California – San Diego, La Jolla
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Wu Y, Ding J, Sun Q, Zhou K, Zhang W, Du Q, Xu T, Xu W. Long noncoding RNA hypoxia-inducible factor 1 alpha-antisense RNA 1 promotes tumor necrosis factor-α-induced apoptosis through caspase 3 in Kupffer cells. Medicine (Baltimore) 2018; 97:e9483. [PMID: 29369172 PMCID: PMC5794356 DOI: 10.1097/md.0000000000009483] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Kupffer cells (KCs) play a crucial role in the pathogenesis of acute-on-chronic liver failure (ACLF) which is characterized by acute and severe disease in patients with preexisting liver disease and shows high mortality. Long noncoding RNAs (lncRNAs) are recently found to be involved in gene regulation. However, the mechanisms of how KCs are regulated by inflammatory factors, tumor necrosis factor-α (TNF-α), and whether lncRNAs are involved in the process remain largely unknown. Hence, we investigated the role of lncRNAs in the cytotoxicity of TNF-α on KCs.lncRNA array (The lncRNAs in the array are apoptosis-related lncRNAs reported in some research papers.) was used to identify lncRNAs related with liver fibrosis. Annexin V/protease inhibitor (PI) staining was used for detection of cell apoptosis. Real time-polymerase chain reaction was utilized for analysis of mRNA levels of lncRNA hypoxia-inducible factor 1 alpha-antisense RNA 1 (HIF1A-AS1) and apoptosis-related genes. Western blot was implied to the determination of lymphoid enhancer factor-1 (LEF-1).In this study, we found that HIF1A-AS1 could be upregulated by TNF-α by lncRNA array analysis and knockdown of HIF1A-AS1 significantly rescued cell apoptosis induced by TNF-α. Moreover, inhibition of HIF1A-AS1 markedly reduced mRNA level of caspase 3 which can be significantly enhanced by TNF-α. Furthermore, HIF1A-AS1 showed binding sites for LEF-1 and siRNA-mediated downregulation of LEF-1 decreased HIF1A-AS1 level in KCs treated with TNF-α.This study elucidates a new role of HIF1A-AS1 in TNF-α-induced cell apoptosis and provides potential therapeutic targets for ACLF.
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Liu C, Zhou MS, Li Y, Wang A, Chadipiralla K, Tian R, Raij L. Oral nicotine aggravates endothelial dysfunction and vascular inflammation in diet-induced obese rats: Role of macrophage TNFα. PLoS One 2017; 12:e0188439. [PMID: 29236702 PMCID: PMC5728478 DOI: 10.1371/journal.pone.0188439] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 11/07/2017] [Indexed: 01/05/2023] Open
Abstract
Obesity and cigarette smoke are major cardiovascular (CV) risk factors and, when coexisting in the same individuals, have additive/synergistic effects upon CVD. We studied the mechanisms involved in nicotine enhancement of CVD in Sprague Dawley rats with diet–induced obesity. The rats were fed either a high fat (HFD) or normal rat chow diet with or without nicotine (100 mg/L in drinking water) for 20 weeks. HFD rats developed central obesity, increased systolic blood pressure (SBP), aortic superoxide (O2-) production, and impaired endothelial nitric oxide synthase (eNOS) and endothelium-dependent relaxation to acetylcholine (EDR). Nicotine further increased SBP, O2- and impaired eNOS and EDR in obese rats. In the peritoneal macrophages from obese rats, tumor necrosis factor (TNF) α, interleukin 1β and CD36 were increased, and were further increased in nicotine-treated obese rats. Using PCR array we found that 3 of 84 target proinflammatory genes were increased by 2–4 fold in the aorta of obese rats, 11 of the target genes were further increased in nicotine-treated obese rats. HUVECs, incubated with conditioned medium from the peritoneal macrophages of nicotine treated-obese rats, exhibited reduced eNOS and increased NADPH oxidase subunits gp91phox and p22phox expression. Those effects were partially prevented by adding anti-TNFα antibody to the conditioned medium. Our results suggest that nicotine aggravates the CV effects of diet–induced obesity including the oxidative stress, vascular inflammation and endothelial dysfunction. The underlying mechanisms may involve in targeting endothelium by enhancement of macrophage-derived TNFα.
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Affiliation(s)
- Chang Liu
- Department of Endocrinology, First Affiliated Hospital, Jinzhou Medical University, Jinzhou, P.R. of China
| | - Ming-Sheng Zhou
- Department of Physiology, Shenyang Medical University, Shenyang, P.R. of China
- Department of Physiology, Jinzhou Medical University, Jinzhou, P.R. of China
- * E-mail:
| | - Yao Li
- Department of Physiology, Jinzhou Medical University, Jinzhou, P.R. of China
| | - Aimei Wang
- Department of Physiology, Jinzhou Medical University, Jinzhou, P.R. of China
| | - Kiranmai Chadipiralla
- Nephrology-Hypertension Section, University of Miami Miller School of Medicine, Miami VAMC, Miami, Florida, United States of America
| | - Runxia Tian
- Nephrology-Hypertension Section, University of Miami Miller School of Medicine, Miami VAMC, Miami, Florida, United States of America
| | - Leopoldo Raij
- Nephrology-Hypertension Section, University of Miami Miller School of Medicine, Miami VAMC, Miami, Florida, United States of America
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Pinto-Bravo P, Galvão A, Rebordão MR, Amaral A, Ramilo D, Silva E, Szóstek-Mioduchowska A, Alexandre-Pires G, Roberto da Costa R, Skarzynski DJ, Ferreira-Dias G. Ovarian steroids, oxytocin, and tumor necrosis factor modulate equine oviduct function. Domest Anim Endocrinol 2017; 61:84-99. [PMID: 28753494 DOI: 10.1016/j.domaniend.2017.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/05/2017] [Accepted: 06/16/2017] [Indexed: 02/06/2023]
Abstract
The oviduct plays important roles in the early reproductive process. The aim of this study was to evaluate gene transcription and protein expression of progesterone receptor (PGR), estrogen receptors 1 (ESR1) and 2 (ESR2); oxytocin receptor (OXTR); prostaglandin F2α synthase (AKR1C3), and prostaglandin E2 synthase (Ptges) in mare oviduct in different estrous cycle stages. Estradiol (E2), progesterone (P4), oxytocin (OXT), and tumor necrosis factor α (TNF) effect on in vitro PGE2 and prostaglandin F2α (PGF2α) secretion by equine oviduct explants or by oviductal epithelial cells (OECs) were also assessed. During the breeding season, oviduct tissue was obtained post mortem from cyclic mares. Protein of ESR1, ESR2, PGR, AKR1C3, and Ptges was present in OECs, whereas OXTR was shown in oviduct stroma. In follicular phase, protein expression of ESR1, ESR2, PGR, and OXTR increased in oviduct explants (P < 0.05), whereas no estrous cycle effect was noted for AKR1C3 or Ptges. In follicular phase, mRNA transcription was upregulated for Pgr but downregulated for Oxtr, Ptges, and Akr1c3 (P < 0.05). Nevertheless, Esr1 and Esr2 mRNA levels did not change with the estrous cycle. In the ampulla, Esr1, Esr2, and Oxtr mRNA transcription increased, but not for Pgr or Ptges. In contrast, Akr1c3 mRNA level was upregulated in the infundibulum (P < 0.05). In follicular phase, E2, P4, and OXT downregulated PGE2 production by OEC (P < 0.05), but no difference was observed in mid-luteal phase. Explants production of PGE2 rose when treated with OXT in follicular phase; with TNF or OXT in early luteal phase; or with TNF, OXT, or P4 in mid-luteal phase. PGF2α production by OEC was downregulated by all treatments in follicular phase but upregulated in mid-luteal phase (P < 0.05). Oviduct explants PGF2α production was stimulated by TNF or OXT in all estrous cycle phases. In conclusion, this work has shown that ESR1, ESR2, OXTR, Ptges, and AKRLC3 gene transcription and/or translation is estrous cycle dependent and varies with oviduct portion (infundibulum vs ampulla) and cell type. Ovarian steroid hormones, OXT and TNF stimulation of PGF2α and/or PGE2 production is also estrous cycle dependent and varies in the different portions of mare oviduct. Differential transcription level and protein localization in various portions of the oviduct throughout the estrous cycle, as well as PG production, suggest coordinated physiologic actions and mechanisms of steroid hormones, OXT, and TNF in the equine oviduct.
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Affiliation(s)
- P Pinto-Bravo
- C.I.I.S.A., Faculty of Veterinary Medicine, University of Lisbon, Portugal; Coimbra School of Agriculture, Coimbra, Portugal
| | - A Galvão
- Coimbra School of Agriculture, Coimbra, Portugal; Institute of Animal Reproduction and Food Research of PAS, Olsztyn, Poland
| | - M R Rebordão
- C.I.I.S.A., Faculty of Veterinary Medicine, University of Lisbon, Portugal; Coimbra School of Agriculture, Coimbra, Portugal
| | - A Amaral
- C.I.I.S.A., Faculty of Veterinary Medicine, University of Lisbon, Portugal
| | - D Ramilo
- C.I.I.S.A., Faculty of Veterinary Medicine, University of Lisbon, Portugal
| | - E Silva
- C.I.I.S.A., Faculty of Veterinary Medicine, University of Lisbon, Portugal
| | | | - G Alexandre-Pires
- C.I.I.S.A., Faculty of Veterinary Medicine, University of Lisbon, Portugal
| | | | - D J Skarzynski
- Institute of Animal Reproduction and Food Research of PAS, Olsztyn, Poland
| | - G Ferreira-Dias
- C.I.I.S.A., Faculty of Veterinary Medicine, University of Lisbon, Portugal.
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Ramakrishnan VR, Gonzalez JR, Cooper SE, Barham HP, Anderson CB, Larson ED, Cool CD, Diller JD, Jones K, Kinnamon SC. RNA sequencing and pathway analysis identify tumor necrosis factor alpha driven small proline-rich protein dysregulation in chronic rhinosinusitis. Am J Rhinol Allergy 2017; 31:283-288. [PMID: 28859701 PMCID: PMC5590176 DOI: 10.2500/ajra.2017.31.4457] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) is a heterogeneous inflammatory disorder in which many pathways contribute to end-organ disease. Small proline-rich proteins (SPRR) are polypeptides that have recently been shown to contribute to epithelial biomechanical properties relevant in T-helper type 2 inflammation. There is evidence that genetic polymorphism in SPRR genes may predict the development of asthma in children with atopy and, correlatively, that expression of SPRRs is increased under allergic conditions, which leads to epithelial barrier dysfunction in atopic disease. METHODS RNAs from uncinate tissue specimens from patients with CRS and control subjects were compared by RNA sequencing by using Ingenuity Pathway Analysis (n = 4 each), and quantitative polymerase chain reaction (PCR) (n = 15). A separate cohort of archived sinus tissue was examined by immunohistochemistry (n = 19). RESULTS A statistically significant increase of SPRR expression in CRS sinus tissue was identified that was not a result of atopic presence. SPRR1 and SPRR2A expressions were markedly increased in patients with CRS (p < 0.01) on RNA sequencing, with confirmation by using real-time PCR. Immunohistochemistry of archived surgical samples demonstrated staining of SPRR proteins within squamous epithelium of both groups. Pathway analysis indicated tumor necrosis factor (TNF) alpha as a master regulator of the SPRR gene products. CONCLUSION Expression of SPRR1 and of SPRR2A is increased in mucosal samples from patients with CRS and appeared as a downstream result of TNF alpha modulation, which possibly resulted in epithelial barrier dysfunction.
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Affiliation(s)
- Vijay R. Ramakrishnan
- From the Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Joseph R. Gonzalez
- From the Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Sarah E. Cooper
- From the Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Henry P. Barham
- From the Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
| | - Catherine B. Anderson
- Rocky Mountain Taste and Smell Center, Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, Colorado
| | - Eric D. Larson
- Rocky Mountain Taste and Smell Center, Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, Colorado
| | - Carlyne D. Cool
- Department of Pathology, University of Colorado School of Medicine, Aurora, Colorado, and
| | - John D. Diller
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado
| | - Kenneth Jones
- Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado
| | - Sue C. Kinnamon
- From the Department of Otolaryngology, University of Colorado School of Medicine, Aurora, Colorado
- Rocky Mountain Taste and Smell Center, Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, Colorado
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Chao G, Tian X, Zhang W, Ou X, Cong F, Song T. Blocking Smad2 signalling with loganin attenuates SW10 cell cycle arrest induced by TNF-α. PLoS One 2017; 12:e0176965. [PMID: 28475649 PMCID: PMC5419568 DOI: 10.1371/journal.pone.0176965] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/19/2017] [Indexed: 11/19/2022] Open
Abstract
The activity of Schwann cells (SWCs) is very important in trauma-induced nerve repair, and tumour necrosis factor-α (TNF-α) produced during tissue injury inhibits the viability of SWCs, which delays the repair of peripheral nerves. Loganin is an iridoid glycoside that has been shown to alleviate a variety of cytotoxic effects. In the current study, we evaluated the potential efficacy and the mechanism of action of loganin in TNF-α-induced cytotoxicity in SW10 cells. The experimental results indicated that loganin blocked TNF-α-mediated Smad2 activation, downregulated the expression of the G1 phase cell cycle inhibitor p15IN4KB, and upregulated the expression of the G1 phase cell cycle activator cyclin D1-CDK4/6, which upregulated E2F-1-dependent survivin expression and relieved TNF-α-induced apoptosis in SW10 cells. The protective effect of loganin on SWCs has potential medicinal value in the promotion of peripheral nerve repair and is significant for studies in the field of tissue regeneration.
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Affiliation(s)
- Gao Chao
- Department of Bone Microsurgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Xiaoning Tian
- Department of Bone Microsurgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Wentao Zhang
- Department of Bone Microsurgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Xuehai Ou
- Department of Bone Microsurgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Fei Cong
- Department of Bone Microsurgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Tao Song
- Department of Bone Microsurgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
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Wei ZJ, Liu J, Qin J. miR-138 suppressed the progression of osteoarthritis mainly through targeting p65. Eur Rev Med Pharmacol Sci 2017; 21:2177-2184. [PMID: 28537665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE MicroRNAs are reported to play key roles in regulating the main risk factors for osteoarthritis (OA) chondrogenesis. In the current study, we focused on miR-138, which has never been explored in OA. PATIENTS AND METHODS The expression of miR-138 and p65 was explored in the cartilage tissues of OA patients and compared with those of normal controls. We then explored the effects of miR-138 on NF-κB signaling activation in both human OA chondrocytes and chondrogenic SW1353 cells in the presence of 10 nM TNFα. The protein levels of p65, COX-2 and IL6 were determined using Western blot analysis. To validate the target gene of miR-138, a dual luciferase reporter assay was performed. RESULTS The level of miR-138 was markedly reduced in the OA cartilage tissues compared with those of normal controls. Real-time PCR analysis demonstrated that the level of miR-138 decreased after TNFα treatment for 3, 6, and 12 h in the normal chondrocytes and OA chondrocytes. Furthermore, overexpression of miR-138 suppressed the protein levels of p65, COX-2 and IL6 in human OA chondrocytes and chondrogenic SW1353 cells. A dual luciferase reporter assay demonstrated that miR-138 significantly suppressed the relative luciferase activity of pmirGLO-p65-3'UTR. More importantly, treatment with TNFα significantly enhanced the protein levels of p65, COX-2 and IL6. However, overexpression of miR-138 could partially abolish such effects. CONCLUSIONS We demonstrated that reduced miR-138 expression enhanced the destruction of the cartilage tissues among OA patients, mainly through targeting p65.
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Affiliation(s)
- Z-J Wei
- Department of Orthopaedics, Sir Run Run Hospital Nanjing Medical University, Nanjing, Jiangsu Province, China.
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Kim A, Nam YJ, Shin YK, Lee MS, Sohn DS, Lee CS. Rotundarpene inhibits TNF-α-induced activation of the Akt, mTOR, and NF-κB pathways, and the JNK and p38 associated with production of reactive oxygen species. Mol Cell Biochem 2017; 434:113-125. [PMID: 28432555 DOI: 10.1007/s11010-017-3041-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 04/17/2017] [Indexed: 11/26/2022]
Abstract
Ilex Rotunda Thunb has been shown to have anti-inflammatory and antioxidant effects. In human keratinocytes, we investigated the effect of rotundarpene (4-caffeoyl-3-methyl-but-2-ene-1,4-diol) on the TNF-α-stimulated production of inflammatory mediators in relation to the Akt, mTOR, and NF-κB pathways, and the JNK and p38-MAPK. Rotundarpene, Akt inhibitor, Bay 11-7085, rapamycin, and N-acetylcysteine inhibited the TNF-α-stimulated production of cytokines and chemokines, increase in the levels of p-Akt and mTOR, activation of NF-κB, and production of reactive oxygen species in keratinocytes. TNF-α treatment induced phosphorylation of the JNK and p38-MAPK. Inhibitors of the c-JNK (SP600125) and p38-MAPK (SB203580) reduced the TNF-α-induced production of inflammatory mediators, binding of NF-κB to DNA, and activation of the JNK and p38-MAPK in keratinocytes. The results show that rotundarpene may reduce the TNF-α-stimulated inflammatory mediator production by suppressing the reactive oxygen species-dependent activation of the Akt, mTOR, and NF-κB pathways, and activation of the JNK and p38-MAPK in human keratinocytes. Additionally, rotundarpene appears to attenuate the Akt, mTOR, and NF-κB pathways and the JNK and p38-MAPK-mediated inflammatory skin diseases.
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Affiliation(s)
- Arum Kim
- Department of Pharmacology, College of Medicine, and The BK21plus Skin Barrier Network Human Resources Development Team, Chung-Ang University, Seoul, 156-756, South Korea
| | - Yoon Jeong Nam
- Department of Pharmacology, College of Medicine, and The BK21plus Skin Barrier Network Human Resources Development Team, Chung-Ang University, Seoul, 156-756, South Korea
| | - Yong Kyoo Shin
- Department of Pharmacology, College of Medicine, and The BK21plus Skin Barrier Network Human Resources Development Team, Chung-Ang University, Seoul, 156-756, South Korea
| | - Min Sung Lee
- Department of Internal Medicine, SoonChunHyang University Hospital, Bucheon, Kyung-Gi-Do, 420-767, South Korea
| | - Dong Suep Sohn
- Department of Thoracic and Cardiovascular Surgery, Chung-Ang University Hospital, Seoul, 156-755, South Korea
| | - Chung Soo Lee
- Department of Pharmacology, College of Medicine, and The BK21plus Skin Barrier Network Human Resources Development Team, Chung-Ang University, Seoul, 156-756, South Korea.
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Zhang L, Gan X, He Y, Zhu Z, Zhu J, Yu H. Drp1-dependent mitochondrial fission mediates osteogenic dysfunction in inflammation through elevated production of reactive oxygen species. PLoS One 2017; 12:e0175262. [PMID: 28388678 PMCID: PMC5384744 DOI: 10.1371/journal.pone.0175262] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/23/2017] [Indexed: 02/05/2023] Open
Abstract
Although previous studies have implicated pro-inflammatory cytokines, such as tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), to be detrimental for osteogenic activity, the related regulatory mechanisms are not yet fully validated. Since mitochondria host several essential metabolic processes and play a pivotal role in cellular functions, whether and how mitochondrial function contributes to inflammation-induced bone destruction needs further exploration. Our findings revealed that TNF-α impaired osteoblast function, including decreased mRNA levels of osteogenic markers, suppressed ALP expression and activity, and compromised cellular viability. Moreover, increased reactive oxygen species (ROS)-mediated oxidative stress in the TNF-α-treated group enhanced excessive mitochondrial fragmentation and disrupted mitochondrial function. However, treatment with antioxidant N-acetyl cysteine (NAC) or mitochondrial division inhibitor Mdivi-1 protected the cells from these adverse phenomena. These findings provide new insights into the role of the Drp1-dependent mitochondrial pathway in the osteogenic dysfunction during inflammation, indicating that this pathway may be a target for the development of new therapeutic approaches for the prevention and treatment of inflammation-induced bone destruction.
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Affiliation(s)
- Ling Zhang
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xueqi Gan
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuting He
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhuoli Zhu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Junfei Zhu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Haiyang Yu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- * E-mail:
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Smits NC, Kobayashi T, Srivastava PK, Skopelja S, Ivy JA, Elwood DJ, Stan RV, Tsongalis GJ, Sellke FW, Gross PL, Cole MD, DeVries JT, Kaplan AV, Robb JF, Williams SM, Shworak NW. HS3ST1 genotype regulates antithrombin's inflammomodulatory tone and associates with atherosclerosis. Matrix Biol 2017; 63:69-90. [PMID: 28126521 DOI: 10.1016/j.matbio.2017.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 01/19/2017] [Accepted: 01/20/2017] [Indexed: 12/21/2022]
Abstract
The HS3ST1 gene controls endothelial cell production of HSAT+ - a form of heparan sulfate containing a specific pentasaccharide motif that binds the anticoagulant protein antithrombin (AT). HSAT+ has long been thought to act as an endogenous anticoagulant; however, coagulation was normal in Hs3st1-/- mice that have greatly reduced HSAT+ (HajMohammadi et al., 2003). This finding indicates that HSAT+ is not essential for AT's anticoagulant activity. To determine if HSAT+ is involved in AT's poorly understood inflammomodulatory activities, Hs3st1-/- and Hs3st1+/+ mice were subjected to a model of acute septic shock. Compared with Hs3st1+/+ mice, Hs3st1-/- mice were more susceptible to LPS-induced death due to an increased sensitivity to TNF. For Hs3st1+/+ mice, AT treatment reduced LPS-lethality, reduced leukocyte firm adhesion to endothelial cells, and dilated isolated coronary arterioles. Conversely, for Hs3st1-/- mice, AT induced the opposite effects. Thus, in the context of acute inflammation, HSAT+ selectively mediates AT's anti-inflammatory activity; in the absence of HSAT+, AT's pro-inflammatory effects predominate. To explore if the anti-inflammatory action of HSAT+ also protects against a chronic vascular-inflammatory disease, atherosclerosis, we conducted a human candidate-gene association study on >2000 coronary catheterization patients. Bioinformatic analysis of the HS3ST1 gene identified an intronic SNP, rs16881446, in a putative transcriptional regulatory region. The rs16881446G/G genotype independently associated with the severity of coronary artery disease and atherosclerotic cardiovascular events. In primary endothelial cells, the rs16881446G allele associated with reduced HS3ST1 expression. Together with the mouse data, this leads us to conclude that the HS3ST1 gene is required for AT's anti-inflammatory activity that appears to protect against acute and chronic inflammatory disorders.
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Affiliation(s)
- Nicole C Smits
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Takashi Kobayashi
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Pratyaksh K Srivastava
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Sladjana Skopelja
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Julianne A Ivy
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Dustin J Elwood
- Department of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - Radu V Stan
- Department of Pathology, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Gregory J Tsongalis
- Department of Pathology, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Frank W Sellke
- Division of Cardiothoracic Surgery, Brown Medical School, Providence, RI, USA
| | - Peter L Gross
- Department of Medicine, Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Michael D Cole
- Department of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH, USA; Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - James T DeVries
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Aaron V Kaplan
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - John F Robb
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Scott M Williams
- Department of Genetics, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - Nicholas W Shworak
- Section of Cardiology, Department of Medicine, Heart and Vascular Center, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA; Department of Pharmacology and Toxicology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA.
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48
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Wang C, Yu X, Yan Y, Yang W, Zhang S, Xiang Y, Zhang J, Wang W. Tumor necrosis factor-α: a key contributor to intervertebral disc degeneration. Acta Biochim Biophys Sin (Shanghai) 2017; 49:1-13. [PMID: 27864283 DOI: 10.1093/abbs/gmw112] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/13/2016] [Indexed: 12/11/2022] Open
Abstract
Intervertebral disc (IVD) degeneration (IDD) is the most common cause leading to low back pain (LBP), which is a highly prevalent, costly, and crippling condition worldwide. Current treatments for IDD are limited to treat the symptoms and do not target the pathophysiology. Tumor necrosis factor-α (TNF-α) is one of the most potent pro-inflammatory cytokines and signals through its receptors TNFR1 and TNFR2. TNF-α is highly expressed in degenerative IVD tissues, and it is deeply involved in multiple pathological processes of disc degeneration, including matrix destruction, inflammatory responses, apoptosis, autophagy, and cell proliferation. Importantly, anti-TNF-α therapy has shown promise for mitigating disc degeneration and relieving LBP. In this review, following a brief description of TNF-α signal transduction, we mainly focus on the expression pattern and roles of TNF-α in IDD, and summarize the emerging progress regarding its inhibition as a promising biological therapeutic approach to disc degeneration and associated LBP. A better understanding will help to develop novel TNF-α-centered therapeutic interventions for degenerative disc disease.
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Affiliation(s)
- Cheng Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Xiaohua Yu
- Medical Research Center, University of South China, Hengyang 421001, China
| | - Yiguo Yan
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Wei Yang
- Department of Hand and Micro-surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Shujun Zhang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Yongxiao Xiang
- Department of Hand and Micro-surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Jian Zhang
- Department of Hand and Micro-surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
| | - Wenjun Wang
- Department of Spine Surgery, The First Affiliated Hospital, University of South China, Hengyang 421001, China
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49
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Póvoa TF, Oliveira ERA, Basílio-de-Oliveira CA, Nuovo GJ, Chagas VLA, Salomão NG, Mota EM, Paes MV. Peripheral Organs of Dengue Fatal Cases Present Strong Pro-Inflammatory Response with Participation of IFN-Gamma-, TNF-Alpha- and RANTES-Producing Cells. PLoS One 2016; 11:e0168973. [PMID: 28006034 PMCID: PMC5179082 DOI: 10.1371/journal.pone.0168973] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 12/10/2016] [Indexed: 12/26/2022] Open
Abstract
Dengue disease is an acute viral illness caused by dengue virus (DENV) that can progress to hemorrhagic stages leading to about 20000 deaths every year worldwide. Despite many clinical investigations regarding dengue, the immunopathogenic process by which infected patients evolve to the severe forms is not fully understood. Apart from differences in virulence and the antibody cross reactivity that can potentially augment virus replication, imbalanced cellular immunity is also seen as a major concern in the establishment of severe dengue. In this context, the investigation of cellular immunity and its products in dengue fatal cases may provide valuable data to help revealing dengue immunopathogenesis. Here, based in four dengue fatal cases infected by the serotype 3 in Brazil, different peripheral organs (livers, lungs and kidneys) were studied to evaluate the presence of cell infiltrates and the patterns of local cytokine response. The overall scenario of the studied cases revealed a considerable systemic involvement of infection with mononuclear cells targeted to all of the evaluated organs, as measured by immunohistochemistry (IHC). Quantification of cytokine-expressing cells in peripheral tissues was also performed to characterize the ongoing inflammatory process by the severe stage of the disease. Increased levels of IFN-γ- and TNF-α-expressing cells in liver, lung and kidney samples of post-mortem subjects evidenced a strong pro-inflammatory induction in these tissues. The presence of increased RANTES-producing cell numbers in all analyzed organs suggested a possible link between the clinical status and altered vascular permeability. Co-staining of DENV RNA and IFN-γ or TNF-α using in situ hibridization and IHC confirmed the virus-specific trigger of the pro-inflammatory response. Taken together, this work provided additional evidences that corroborated with the traditional theories regarding the “cytokine storm” and the occurrence of uneven cellular immunity in response to DENV as major reasons for progress to severe disease.
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Affiliation(s)
- Tiago F. Póvoa
- Laboratory of Biotechnology and Physiology of Viral Infections, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Edson R. A. Oliveira
- Laboratory of Molecular Modeling, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Gerard J. Nuovo
- Ohio State University Comprehensive Cancer Center, Columbus, Ohio, United States of America
- Phylogeny Inc, Powell, Ohio, United States of America
| | - Vera L. A. Chagas
- Pathological Anatomy, Clementino Fraga Filho University Hospital, Rio de Janeiro, Brazil
| | - Natália G. Salomão
- Interdisciplinary Laboratory of Medical Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Ester M. Mota
- Laboratory of Pathology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Marciano V. Paes
- Interdisciplinary Laboratory of Medical Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
- * E-mail:
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50
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Abstract
Osteoprotegerin (OPG), receptor activator of nuclear factor-κB (RANK), and RANK ligand (RANKL) are mediators of various cellular interactions, including bone metabolism. We analyzed expression of these three genes during murine odontogenesis from epithelial thickening to cytodifferentiation stages. Opg showed expression in the thickening and bud epithelium. Expression of Opg and Rank was observed in both the internal and the external enamel epithelium as well as in the dental papilla mesenchyme. Although Rankl expression was not detected in tooth epithelium or mesenchyme, it was expressed in pre-osteogenic mesenchymal cells close to developing tooth germs. All three genes were detected in developing dentary bone at P0. The addition of exogenous OPG to explant cultures of tooth primordia produced a delay in tooth development that resulted in reduced mineralization. We propose that the spatiotemporal expression of these molecules in early tooth and bone primordia cells has a role in co-ordinating bone and tooth development.
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Affiliation(s)
- A Ohazama
- Department of Craniofacial Development, Floor 28, Guy's Tower, GKT Dental Institute, King's College London, Guy's Hospital, London Bridge, London SE1 9RT, UK
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