151
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Zhou B, Wang DDH, Qiu Y, Airhart S, Liu Y, Stempien-Otero A, O'Brien KD, Tian R. Boosting NAD level suppresses inflammatory activation of PBMCs in heart failure. J Clin Invest 2021; 130:6054-6063. [PMID: 32790648 PMCID: PMC7598081 DOI: 10.1172/jci138538] [Citation(s) in RCA: 115] [Impact Index Per Article: 38.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/29/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUNDWhile mitochondria play an important role in innate immunity, the relationship between mitochondrial dysfunction and inflammation in heart failure (HF) is poorly understood. In this study we aimed to investigate the mechanistic link between mitochondrial dysfunction and inflammatory activation in peripheral blood mononuclear cells (PBMCs), and the potential antiinflammatory effect of boosting the NAD level.METHODSWe compared the PBMC mitochondrial respiration of 19 hospitalized patients with stage D HF with that of 19 healthy participants. We then created an in vitro model of sterile inflammation by treating healthy PBMCs with mitochondrial damage-associated molecular patterns (MitoDAMPs) isolated from human heart tissue. Last, we enrolled patients with stage D HF and sampled their blood before and after taking 5 to 9 days of oral nicotinamide riboside (NR), a NAD precursor.RESULTSWe demonstrated that HF is associated with both reduced respiratory capacity and elevated proinflammatory cytokine gene expressions. In our in vitro model, MitoDAMP-treated PBMCs secreted IL-6 that impaired mitochondrial respiration by reducing complex I activity. Last, oral NR administration enhanced PBMC respiration and reduced proinflammatory cytokine gene expression in 4 subjects with HF.CONCLUSIONThese findings suggest that systemic inflammation in patients with HF is causally linked to mitochondrial function of the PBMCs. Increasing NAD levels may have the potential to improve mitochondrial respiration and attenuate proinflammatory activation of PBMCs in HF.TRIAL REGISTRATIONClinicalTrials.gov NCT03727646.FUNDINGThis study was funded by the NIH, the University of Washington, and the American Heart Association.
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Affiliation(s)
- Bo Zhou
- Mitochondria and Metabolism Center, Department of Anesthesiology and Pain Medicine and
| | - Dennis Ding-Hwa Wang
- Division of Cardiology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Yanhua Qiu
- Mitochondria and Metabolism Center, Department of Anesthesiology and Pain Medicine and
| | - Sophia Airhart
- Division of Cardiology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Yaxin Liu
- Mitochondria and Metabolism Center, Department of Anesthesiology and Pain Medicine and
| | - April Stempien-Otero
- Division of Cardiology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Kevin D O'Brien
- Division of Cardiology, Department of Medicine, University of Washington School of Medicine, Seattle, Washington, USA
| | - Rong Tian
- Mitochondria and Metabolism Center, Department of Anesthesiology and Pain Medicine and
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152
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Lee SYH, Yates NJ, Tye SJ. Inflammatory Mechanisms in Parkinson's Disease: From Pathogenesis to Targeted Therapies. Neuroscientist 2021; 28:485-506. [PMID: 33586516 DOI: 10.1177/1073858421992265] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Inflammation is a critical factor contributing to the progressive neurodegenerative process observed in Parkinson's disease (PD). Microglia, the immune cells of the central nervous system, are activated early in PD pathogenesis and can both trigger and propagate early disease processes via innate and adaptive immune mechanisms such as upregulated immune cells and antibody-mediated inflammation. Downstream cytokines and gene regulators such as microRNA (miRNA) coordinate later disease course and mediate disease progression. Biomarkers signifying the inflammatory and neurodegenerative processes at play within the central nervous system are of increasing interest to clinical teams. To be effective, such biomarkers must achieve the highest sensitivity and specificity for predicting PD risk, confirming diagnosis, or monitoring disease severity. The aim of this review was to summarize the current preclinical and clinical evidence that suggests that inflammatory processes contribute to the initiation and progression of neurodegenerative processes in PD. In this article, we further summarize the data about main inflammatory biomarkers described in PD to date and their potential for regulation as a novel target for disease-modifying pharmacological strategies.
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Affiliation(s)
- Stellina Y H Lee
- Queensland Brain Institute, The University of Queensland, Saint Lucia, Queensland, Australia.,Faculty of Medicine, The University of Queensland, Saint Lucia, Queensland, Australia
| | - Nathanael J Yates
- Queensland Brain Institute, The University of Queensland, Saint Lucia, Queensland, Australia.,School of Human Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Susannah J Tye
- Queensland Brain Institute, The University of Queensland, Saint Lucia, Queensland, Australia.,Department of Psychiatry & Psychology, Mayo Clinic, Rochester, MN, USA.,Department of Psychiatry, University of Minnesota, Minneapolis, MN, USA
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153
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Chong WC, Shastri MD, Peterson GM, Patel RP, Pathinayake PS, Dua K, Hansbro NG, Hsu AC, Wark PA, Shukla SD, Johansen MD, Schroder K, Hansbro PM. The complex interplay between endoplasmic reticulum stress and the NLRP3 inflammasome: a potential therapeutic target for inflammatory disorders. Clin Transl Immunology 2021; 10:e1247. [PMID: 33614031 PMCID: PMC7878118 DOI: 10.1002/cti2.1247] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 01/09/2021] [Accepted: 01/10/2021] [Indexed: 12/15/2022] Open
Abstract
Inflammation is the result of a complex network of cellular and molecular interactions and mechanisms that facilitate immune protection against intrinsic and extrinsic stimuli, particularly pathogens, to maintain homeostasis and promote tissue healing. However, dysregulation in the immune system elicits excess/abnormal inflammation resulting in unintended tissue damage and causes major inflammatory diseases including asthma, chronic obstructive pulmonary disease, atherosclerosis, inflammatory bowel diseases, sarcoidosis and rheumatoid arthritis. It is now widely accepted that both endoplasmic reticulum (ER) stress and inflammasomes play critical roles in activating inflammatory signalling cascades. Notably, evidence is mounting for the involvement of ER stress in exacerbating inflammasome-induced inflammatory cascades, which may provide a new axis for therapeutic targeting in a range of inflammatory disorders. Here, we comprehensively review the roles, mechanisms and interactions of both ER stress and inflammasomes, as well as their interconnected relationships in inflammatory signalling cascades. We also discuss novel therapeutic strategies that are being developed to treat ER stress- and inflammasome-related inflammatory disorders.
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Affiliation(s)
- Wai Chin Chong
- Department of Molecular and Translational ScienceMonash UniversityClaytonVICAustralia
- Centre for Cancer ResearchHudson Institute of Medical ResearchClaytonVICAustralia
| | - Madhur D Shastri
- School of Pharmacy and PharmacologyUniversity of TasmaniaHobartTASAustralia
| | - Gregory M Peterson
- School of Pharmacy and PharmacologyUniversity of TasmaniaHobartTASAustralia
| | - Rahul P Patel
- School of Pharmacy and PharmacologyUniversity of TasmaniaHobartTASAustralia
| | - Prabuddha S Pathinayake
- Priority Research Centre for Healthy LungsHunter Medical Research InstituteThe University of NewcastleCallaghanNSWAustralia
| | - Kamal Dua
- Discipline of PharmacyGraduate School of HealthUniversity of Technology SydneyUltimoNSWAustralia
| | - Nicole G Hansbro
- Centre for InflammationCentenary InstituteFaculty of ScienceSchool of Life SciencesUniversity of TechnologySydneyNSWAustralia
| | - Alan C Hsu
- Priority Research Centre for Healthy LungsHunter Medical Research InstituteThe University of NewcastleCallaghanNSWAustralia
| | - Peter A Wark
- Priority Research Centre for Healthy LungsHunter Medical Research InstituteThe University of NewcastleCallaghanNSWAustralia
| | - Shakti Dhar Shukla
- Priority Research Centre for Healthy LungsHunter Medical Research InstituteThe University of NewcastleCallaghanNSWAustralia
| | - Matt D Johansen
- Centre for InflammationCentenary InstituteFaculty of ScienceSchool of Life SciencesUniversity of TechnologySydneyNSWAustralia
| | - Kate Schroder
- Institute for Molecular BioscienceUniversity of QueenslandSt LuciaQLDAustralia
| | - Philip M Hansbro
- Priority Research Centre for Healthy LungsHunter Medical Research InstituteThe University of NewcastleCallaghanNSWAustralia
- Centre for InflammationCentenary InstituteFaculty of ScienceSchool of Life SciencesUniversity of TechnologySydneyNSWAustralia
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154
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Carinci M, Vezzani B, Patergnani S, Ludewig P, Lessmann K, Magnus T, Casetta I, Pugliatti M, Pinton P, Giorgi C. Different Roles of Mitochondria in Cell Death and Inflammation: Focusing on Mitochondrial Quality Control in Ischemic Stroke and Reperfusion. Biomedicines 2021; 9:biomedicines9020169. [PMID: 33572080 PMCID: PMC7914955 DOI: 10.3390/biomedicines9020169] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial dysfunctions are among the main hallmarks of several brain diseases, including ischemic stroke. An insufficient supply of oxygen and glucose in brain cells, primarily neurons, triggers a cascade of events in which mitochondria are the leading characters. Mitochondrial calcium overload, reactive oxygen species (ROS) overproduction, mitochondrial permeability transition pore (mPTP) opening, and damage-associated molecular pattern (DAMP) release place mitochondria in the center of an intricate series of chance interactions. Depending on the degree to which mitochondria are affected, they promote different pathways, ranging from inflammatory response pathways to cell death pathways. In this review, we will explore the principal mitochondrial molecular mechanisms compromised during ischemic and reperfusion injury, and we will delineate potential neuroprotective strategies targeting mitochondrial dysfunction and mitochondrial homeostasis.
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Affiliation(s)
- Marianna Carinci
- Laboratory for Technologies of Advanced Therapies, Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (M.C.); (B.V.); (S.P.); (P.P.)
| | - Bianca Vezzani
- Laboratory for Technologies of Advanced Therapies, Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (M.C.); (B.V.); (S.P.); (P.P.)
| | - Simone Patergnani
- Laboratory for Technologies of Advanced Therapies, Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (M.C.); (B.V.); (S.P.); (P.P.)
| | - Peter Ludewig
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20251 Hamburg, Germany; (P.L.); (K.L.); (T.M.)
| | - Katrin Lessmann
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20251 Hamburg, Germany; (P.L.); (K.L.); (T.M.)
| | - Tim Magnus
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20251 Hamburg, Germany; (P.L.); (K.L.); (T.M.)
| | - Ilaria Casetta
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy; (I.C.); (M.P.)
| | - Maura Pugliatti
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy; (I.C.); (M.P.)
| | - Paolo Pinton
- Laboratory for Technologies of Advanced Therapies, Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (M.C.); (B.V.); (S.P.); (P.P.)
| | - Carlotta Giorgi
- Laboratory for Technologies of Advanced Therapies, Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (M.C.); (B.V.); (S.P.); (P.P.)
- Correspondence:
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155
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Tezcan G, Garanina EE, Alsaadi M, Gilazieva ZE, Martinova EV, Markelova MI, Arkhipova SS, Hamza S, McIntyre A, Rizvanov AA, Khaiboullina SF. Therapeutic Potential of Pharmacological Targeting NLRP3 Inflammasome Complex in Cancer. Front Immunol 2021; 11:607881. [PMID: 33613529 PMCID: PMC7887322 DOI: 10.3389/fimmu.2020.607881] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 12/17/2020] [Indexed: 12/19/2022] Open
Abstract
Introduction Dysregulation of NLRP3 inflammasome complex formation can promote chronic inflammation by increased release of IL-1β. However, the effect of NLRP3 complex formation on tumor progression remains controversial. Therefore, we sought to determine the effect of NLRP3 modulation on the growth of the different types of cancer cells, derived from lung, breast, and prostate cancers as well as neuroblastoma and glioblastoma in-vitro. Method The effect of Caspase 1 inhibitor (VX765) and combination of LPS/Nigericin on NLRP3 inflammasome activity was analyzed in A549 (lung cancer), MCF-7 (breast cancer), PC3 (prostate cancer), SH-SY5Y (neuroblastoma), and U138MG (glioblastoma) cells. Human fibroblasts were used as control cells. The effect of VX765 and LPS/Nigericin on NLRP3 expression was analyzed using western blot, while IL-1β and IL-18 secretion was detected by ELISA. Tumor cell viability and progression were determined using Annexin V, cell proliferation assay, LDH assay, sphere formation assay, transmission electron microscopy, and a multiplex cytokine assay. Also, angiogenesis was investigated by a tube formation assay. VEGF and MMPs secretion were detected by ELISA and a multiplex assay, respectively. Statistical analysis was done using one-way ANOVA with Tukey’s analyses and Kruskal–Wallis one-way analysis of variance. Results LPS/Nigericin increased NRLP3 protein expression as well as IL-1β and IL-18 secretion in PC3 and U138MG cells compared to A549, MCF7, SH-SY5Y cells, and fibroblasts. In contrast, MIF expression was commonly found upregulated in A549, PC3, SH-SY5Y, and U138MG cells and fibroblasts after Nigericin treatment. Nigericin and a combination of LPS/Nigericin decreased the cell viability and proliferation. Also, LPS/Nigericin significantly increased tumorsphere size in PC3 and U138MG cells. In contrast, the sphere size was reduced in MCF7 and SH-SY5Y cells treated with LPS/Nigericin, while no effect was detected in A549 cells. VX765 increased secretion of CCL24 in A549, MCF7, PC3, and fibroblasts as well as CCL11 and CCL26 in SH-SY5Y cells. Also, VX765 significantly increased the production of VEGF and MMPs and stimulated angiogenesis in all tumor cell lines. Discussion Our data suggest that NLRP3 activation using Nigericin could be a novel therapeutic approach to control the growth of tumors producing a low level of IL-1β and IL-18.
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Affiliation(s)
- Gulcin Tezcan
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.,Department of Fundamental Sciences, Faculty of Dentistry, Bursa Uludag University, Bursa, Turkey
| | - Ekaterina E Garanina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Mohammad Alsaadi
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Zarema E Gilazieva
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Ekaterina V Martinova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Maria I Markelova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Svetlana S Arkhipova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Shaimaa Hamza
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Alan McIntyre
- Centre for Cancer Sciences, Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Albert A Rizvanov
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Svetlana F Khaiboullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.,Department of Microbiology and Immunology, University of Nevada, Reno, NV, United States
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156
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Li J, Meng Q, Fu Y, Yu X, Ji T, Chao Y, Chen Q, Li Y, Bian H. Novel insights: Dynamic foam cells derived from the macrophage in atherosclerosis. J Cell Physiol 2021; 236:6154-6167. [PMID: 33507545 DOI: 10.1002/jcp.30300] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/22/2020] [Accepted: 01/15/2021] [Indexed: 12/12/2022]
Abstract
Atherosclerosis can be regarded as a chronic disease derived from the interaction between disordered lipoproteins and an unsuitable immune response. The evolution of foam cells is not only a significant pathological change in the early stage of atherosclerosis but also a key stage in the occurrence and development of atherosclerosis. The formation of foam cells is mainly caused by the imbalance among lipids uptake, lipids treatment, and reverse cholesterol transport. Although a large number of studies have summarized the source of foam cells and the mechanism of foam cells formation, we propose a new idea about foam cells in atherosclerosis. Rather than an isolated microenvironment, the macrophage multiple lipid uptake pathways, lipid internalization, lysosome, mitochondria, endoplasmic reticulum, neutral cholesterol ester hydrolase (NCEH), acyl-coenzyme A-cholesterol acyltransferase (ACAT), and reverse cholesterol transport are mutually influential, and form a dynamic process under multi-factor regulation. The macrophage takes on different uptake lipid statuses depending on multiple uptake pathways and intracellular lipids, lipid metabolites versus pro-inflammatory factors. Except for NCEH and ACAT, the lipid internalization of macrophages also depends on multicellular organelles including the lysosome, mitochondria, and endoplasmic reticulum, which are associated with each other. A dynamic balance between esterification and hydrolysis of cholesterol for macrophages is essential for physiology and pathology. Therefore, we propose that the foam cell in the process of atherosclerosis may be dynamic under multi-factor regulation, and collate this study to provide a holistic and dynamic idea of the foam cell.
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Affiliation(s)
- Jun Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Qinghai Meng
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yu Fu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xichao Yu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tingting Ji
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ying Chao
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Qi Chen
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yu Li
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Huimin Bian
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
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157
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Morgan AJ, Galione A. Lysosomal agents inhibit store-operated Ca 2+ entry. J Cell Sci 2021; 134:224094. [PMID: 33328326 PMCID: PMC7860125 DOI: 10.1242/jcs.248658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 12/09/2020] [Indexed: 02/02/2023] Open
Abstract
Pharmacological manipulation of lysosome membrane integrity or ionic movements is a key strategy for probing lysosomal involvement in cellular processes. However, we have found an unexpected inhibition of store-operated Ca2+ entry (SOCE) by these agents. Dipeptides [glycyl-L-phenylalanine 2-naphthylamide (GPN) and L-leucyl-L-leucine methyl ester] that are inducers of lysosomal membrane permeabilization (LMP) uncoupled endoplasmic reticulum Ca2+-store depletion from SOCE by interfering with Stim1 oligomerization and/or Stim1 activation of Orai. Similarly, the K+/H+ ionophore, nigericin, that rapidly elevates lysosomal pH, also inhibited SOCE in a Stim1-dependent manner. In contrast, other strategies for manipulating lysosomes (bafilomycin A1, lysosomal re-positioning) had no effect upon SOCE. Finally, the effects of GPN on SOCE and Stim1 was reversed by a dynamin inhibitor, dynasore. Our data show that lysosomal agents not only release Ca2+ from stores but also uncouple this release from the normal recruitment of Ca2+ influx. Summary: Lysosomal agents uncouple ER Ca2+-release from store-operated Ca2+ entry, predominantly by inhibiting Stim1 oligomerization and its activation of Orai.
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Affiliation(s)
- Anthony J Morgan
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, UK
| | - Antony Galione
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, UK
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158
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Pajarillo E, Nyarko-Danquah I, Adinew G, Rizor A, Aschner M, Lee E. Neurotoxicity mechanisms of manganese in the central nervous system. ADVANCES IN NEUROTOXICOLOGY 2021; 5:215-238. [PMID: 34263091 DOI: 10.1016/bs.ant.2020.11.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Edward Pajarillo
- Department of Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Ivan Nyarko-Danquah
- Department of Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Getinet Adinew
- Department of Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Asha Rizor
- Department of Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Eunsook Lee
- Department of Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL, United States
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159
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Yang R, Yu H, Chen J, Zhu J, Song C, Zhou L, Sun Y, Zhang Q. Limonin Attenuates LPS-Induced Hepatotoxicity by Inhibiting Pyroptosis via NLRP3/Gasdermin D Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:982-991. [PMID: 33427450 DOI: 10.1021/acs.jafc.0c06775] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lipopolysaccharide (LPS)-induced liver injury is the main factor in acute liver failure. The current study aims to investigate the protection of limonin, an antioxidant compound from citrus fruit, against LPS-induced liver toxicity and elucidate the potential mechanisms. We found that limonin elevated cell viability and reduced LDH release in LPS-treated HepG2 cells. Limonin also inhibited LPS-induced pyroptosis by inhibiting membrane rupture, reducing ROS generation, and decreasing gasdermin D activation. Moreover, limonin inhibited the formation of a NOD-like receptor protein 3 (NLRP3)/Apoptosis-associated speck-like protein containing a CARD (ASC) complex by reducing the related protein expression and the colocalization cytosolic of NLRP3 and caspase-1 and then suppressed IL-1β maturation. Ultimately, we established LPS-induced hepatotoxicity in vivo by using C57BL/6 mice administrated LPS (10 mg/kg) intraperitoneally and limonin (50 and 100 mg/kg) orally. We found that limonin dereased the serum ALT and AST activity and LDH release and increased the hepatic GSH amount in LPS-treated mice. Additionally, the liver histological evaluation revealed that limonin protects against LPS-induced liver damage. We further demonstrated that limonin ameliorated LPS-induced hepatotoxicity by inhibiting pyroptosis via the NLRP3/gasdermin D signaling pathway. In summary, this study uncovered the mechanism whereby limonin mitigated LPS-induced hepatotoxicity and documented that limonin might be a promising candidate drug for LPS-induced hepatotoxicity.
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Affiliation(s)
- Runyu Yang
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Hanxi Yu
- College of Overseas Education, Nanjing Tech University (NanjingTech), Nanjing 211816, People's Republic of China
| | - Jiaxi Chen
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Jianwei Zhu
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Changqin Song
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Lvqi Zhou
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Yang Sun
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
| | - Qi Zhang
- School of Pharmaceutical Sciences, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, People's Republic of China
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160
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Liu H, Zhao Y, Xie A, Kim TY, Terentyeva R, Liu M, Shi G, Feng F, Choi BR, Terentyev D, Hamilton S, Dudley SC. Interleukin-1β, Oxidative Stress, and Abnormal Calcium Handling Mediate Diabetic Arrhythmic Risk. ACTA ACUST UNITED AC 2021; 6:42-52. [PMID: 33532665 PMCID: PMC7838050 DOI: 10.1016/j.jacbts.2020.11.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 11/03/2020] [Accepted: 11/03/2020] [Indexed: 12/14/2022]
Abstract
Diabetes-induced arrhythmic risk involved activation of innate immunity, elevation of IL-1β, mitochondrial oxidative stress, SR calcium release channel oxidation, and QT prolongation. Diabetes-induced arrhythmic risk could be inhibited by IL-1β antagonism, mitoROS scavenging, and SR calcium release stabilization. The relationship of inflammation and arrhythmic risk may account for increased susceptibility of diabetic patients to the effects of COVID-19.
Diabetes mellitus (DM) is associated with increased arrhythmia. Type 2 DM (T2DM) mice showed prolonged QT interval and increased ventricular arrhythmic inducibility, accompanied by elevated cardiac interleukin (IL)-1β, increased mitochondrial reactive oxygen species (mitoROS), and oxidation of the sarcoplasmic reticulum (SR) Ca2+ release channel (ryanodine receptor 2 [RyR2]). Inhibiting IL-1β and mitoROS reduced RyR2 oxidation and the ventricular arrhythmia in DM. Inhibiting SR Ca2+ leak by stabilizing the oxidized RyR2 channel reversed the diabetic arrhythmic risk. In conclusion, cardiac IL-1β mediated the DM-associated arrhythmia through mitoROS generation that enhances SR Ca2+ leak. The mechanistic link between inflammation and arrhythmias provides new therapeutic options.
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Key Words
- APD, action potential duration
- DM, diabetes mellitus
- EAD, early afterdepolarization
- IL, interleukin
- IL-1RA, interleukin-1 receptor antagonist
- Ito, transient outward potassium current
- RyR2, ryanodine receptor
- SR, sarcoplasmic reticulum
- T1DM, type 1 diabetes mellitus
- T2DM, type 2 diabetes mellitus
- VT, ventricular tachycardia
- calcium handling
- inflammation
- mitoROS, mitochondrial reactive oxygen species
- mitochondria
- oxidation
- sudden cardiac death
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Affiliation(s)
- Hong Liu
- Division of Cardiology, Department of Medicine, Lillehei Heart Institute, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
| | - Yang Zhao
- Division of Cardiology, Lanzhou University Second Hospital, Lanzhou University, Lanzhou, China
| | - An Xie
- Division of Cardiology, Department of Medicine, Lillehei Heart Institute, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
| | - Tae-Yun Kim
- Division of Cardiology, Cardiovascular Research Center, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Radmila Terentyeva
- Division of Cardiology, Cardiovascular Research Center, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA.,Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio, USA
| | - Man Liu
- Division of Cardiology, Department of Medicine, Lillehei Heart Institute, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
| | - Guangbin Shi
- Division of Cardiology, Cardiovascular Research Center, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Feng Feng
- Division of Cardiology, Department of Medicine, Lillehei Heart Institute, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
| | - Bum-Rak Choi
- Division of Cardiology, Cardiovascular Research Center, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Dmitry Terentyev
- Division of Cardiology, Cardiovascular Research Center, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA.,Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio, USA
| | - Shanna Hamilton
- Department of Physiology and Cell Biology, The Ohio State University, Columbus, Ohio, USA
| | - Samuel C Dudley
- Division of Cardiology, Department of Medicine, Lillehei Heart Institute, University of Minnesota Twin Cities, Minneapolis, Minnesota, USA
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161
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Luo Y, Xiong B, Liu H, Chen Z, Huang H, Yu C, Yang J. Koumine Suppresses IL-1β Secretion and Attenuates Inflammation Associated With Blocking ROS/NF-κB/NLRP3 Axis in Macrophages. Front Pharmacol 2021; 11:622074. [PMID: 33542692 PMCID: PMC7851739 DOI: 10.3389/fphar.2020.622074] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/15/2020] [Indexed: 12/21/2022] Open
Abstract
Koumine (KM), one of the primary constituents of Gelsemium elegans, has been used for the treatment of inflammatory diseases such as rheumatoid arthritis, but whether KM impacts the activation of the NOD-like receptor protein 3 (NLRP3) inflammasome remains unknown. This study aimed to explore the inhibitory effect of KM on NLRP3 inflammasome activation and the underlying mechanisms both in vitro using macrophages stimulated with LPS plus ATP, nigericin or monosodium urate (MSU) crystals and in vivo using an MSU-induced peritonitis model. We found that KM dose-dependently inhibited IL-1β secretion in macrophages after NLRP3 inflammasome activators stimulation. Furthermore, KM treatment efficiently attenuated the infiltration of neutrophils and suppressed IL-1β production in mice with MSU-induced peritonitis. These results indicated that KM inhibited NLRP3 inflammasome activation, and consistent with this finding, KM effectively inhibited caspase-1 activation, mature IL-1β secretion, NLRP3 formation and pro-IL-1β expression in LPS-primed macrophages treated with ATP, nigericin or MSU. The mechanistic study showed that, KM exerted a potent inhibitory effect on the NLRP3 priming step, which decreased the phosphorylation of IκBα and p65, the nuclear localization of p65, and the secretion of TNF-α and IL-6. Moreover, the assembly of NLRP3 was also interrupted by KM. KM blocked apoptosis-associated speck-like protein containing a CARD (ASC) speck formation and its oligomerization and hampered the NLRP3-ASC interaction. This suppression was attributed to the ability of KM to inhibit the production of reactive oxygen species (ROS). In support of this finding, the inhibitory effect of KM on ROS production was completely counteracted by H2O2, an ROS promoter. Our results provide the first indication that KM exerts an inhibitory effect on NLRP3 inflammasome activation associated with blocking the ROS/NF-κB/NLRP3 signal axis. KM might have potential clinical application in the treatment of NLRP3 inflammasome-related diseases.
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Affiliation(s)
- Yufei Luo
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Bojun Xiong
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Haiping Liu
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Zehong Chen
- Experimental Teaching Center, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Huihui Huang
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China.,Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Changxi Yu
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China.,Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Jian Yang
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China.,Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou, China
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162
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Luo D, Liu F, Zhang J, Shao Q, Tao W, Xiao R, Dai W, Qian K. Functional crosstalk between Long non-coding RNAs and the NLRP3 inflammasome in the regulation of diseases. Mol Immunol 2021; 131:191-200. [PMID: 33446392 DOI: 10.1016/j.molimm.2020.12.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 11/22/2020] [Accepted: 12/30/2020] [Indexed: 02/07/2023]
Abstract
Emerging evidence has indicated that long noncoding RNAs (lncRNAs) are involved in various pathophysiological processes of disease, such as cancer occurrence, viral invasion, and inflammatory damage. The main inflammatory body component, nod-like receptor protein 3 (NLRP3), is the trigger point of inflammatory reactions and inflammation-related diseases and coordinates the body's response to inflammation. At present, increasing evidence shows that the interaction of lncRNAs and the NLRP3 inflammasome plays an important role in the inflammatory response and different diseases. This may be involved in the development and progression of various diseases by activating signalling pathways and a variety of molecular regulatory mechanisms-this article reviews progress in research on the relationship between lncRNAs and the NLRP3 inflammasome under different conditions.
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Affiliation(s)
- Deqiang Luo
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Street, Dong Lake District, Nanchang, Jiangxi Province, 330000, China; Department of Intensive Care Unit, the Fifth People's Hospital of Shangrao City, No. 1 Jiannan Road, Xin Zhou District, Shangrao 334000, China.
| | - Fen Liu
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Street, Dong Lake District, Nanchang, Jiangxi Province, 330000, China.
| | - Jianguo Zhang
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Street, Dong Lake District, Nanchang, Jiangxi Province, 330000, China.
| | - Qiang Shao
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Street, Dong Lake District, Nanchang, Jiangxi Province, 330000, China.
| | - Wenqiang Tao
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Street, Dong Lake District, Nanchang, Jiangxi Province, 330000, China.
| | - Rui Xiao
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Street, Dong Lake District, Nanchang, Jiangxi Province, 330000, China.
| | - Wei Dai
- Department of Intensive Care Unit, the Fifth People's Hospital of Shangrao City, No. 1 Jiannan Road, Xin Zhou District, Shangrao 334000, China.
| | - Kejian Qian
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Street, Dong Lake District, Nanchang, Jiangxi Province, 330000, China.
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163
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Wu AG, Zhou XG, Qiao G, Yu L, Tang Y, Yan L, Qiu WQ, Pan R, Yu CL, Law BYK, Qin DL, Wu JM. Targeting microglial autophagic degradation in NLRP3 inflammasome-mediated neurodegenerative diseases. Ageing Res Rev 2021; 65:101202. [PMID: 33161129 DOI: 10.1016/j.arr.2020.101202] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 02/07/2023]
Abstract
Neuroinflammation is considered as a detrimental factor in neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), etc. Nucleotide-binding oligomerization domain-, leucine-rich repeat- and pyrin domain-containing 3 (NLRP3), the most well-studied inflammasome, is abundantly expressed in microglia and has gained considerable attention. Misfolded proteins are characterized as the common hallmarks of neurodegenerative diseases due to not only their induced neuronal toxicity but also their effects in over-activating microglia and the NLRP3 inflammasome. The activated NLRP3 inflammasome aggravates the pathology and accelerates the progression of neurodegenerative diseases. Emerging evidence indicates that microglial autophagy plays an important role in the maintenance of brain homeostasis and the negative regulation of NLRP3 inflammasome-mediated neuroinflammation. The excessive activation of NLRP3 inflammasome impairs microglial autophagy and further aggravates the pathogenesis of neurodegenerative diseases. In this review article, we summarize and discuss the NLRP3 inflammasome and its specific inhibitors in microglia. The crucial role of microglial autophagy and its inducers in the removal of misfolded proteins, the clearance of damaged mitochondria and reactive oxygen species (ROS), and the degradation of the NLRP3 inflammasome or its components in neurodegenerative diseases are summarized. Understanding the underlying mechanisms behind the sex differences in NLRP3 inflammasome-mediated neurodegenerative diseases will help researchers to develop more targeted therapies and increase our diagnostic and prognostic abilities. In addition, the superiority of the combined use of microglial autophagy inducers with the specific inhibitors of the NLRP3 inflammasome in the inhibition of NLRP3 inflammasome-mediated neuroinflammation requires further preclinical and clinical validations in the future.
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164
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Ke X, Lin Z, Ye Z, Leng M, Chen B, Jiang C, Jiang X, Li G. Histone Deacetylases in the Pathogenesis of Diabetic Cardiomyopathy. Front Endocrinol (Lausanne) 2021; 12:679655. [PMID: 34367065 PMCID: PMC8339406 DOI: 10.3389/fendo.2021.679655] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 07/06/2021] [Indexed: 12/20/2022] Open
Abstract
The global burden of diabetes mellitus and its complications are currently increasing. Diabetic cardiomyopathy (DCM) is the main cause of diabetes mellitus associated morbidity and mortality; therefore, a comprehensive understanding of DCM development is required for more effective treatment. A disorder of epigenetic posttranscriptional modification of histones in chromatin has been reported to be associated with the pathology of DCM. Recent studies have implicated that histone deacetylases could regulate cardiovascular and metabolic diseases in cellular processes including cardiac fibrosis, hypertrophy, oxidative stress and inflammation. Therefore in this review, we summarized the roles of histone deacetylases in the pathogenesis of DCM, aiming to provide insights into exploring potential preventative and therapeutic strategies of DCM.
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Affiliation(s)
- Xiangyu Ke
- Centre of Clinical Epidemiology and Methodology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Zhirui Lin
- Centre of Clinical Epidemiology and Methodology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Zebing Ye
- Department of Cardiology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Meifang Leng
- Department of Cardiology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Bo Chen
- Department of Endocrinology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Chunjie Jiang
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyun Jiang
- Department of Pulmonary and Critical Care Medicine, Guangdong Second Provincial General Hospital, Guangzhou, China
- *Correspondence: Xiaoyun Jiang, ; Guowei Li,
| | - Guowei Li
- Centre of Clinical Epidemiology and Methodology, Guangdong Second Provincial General Hospital, Guangzhou, China
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- *Correspondence: Xiaoyun Jiang, ; Guowei Li,
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165
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Wu D, Zhang H, Wu Q, Li F, Wang Y, Liu S, Wang J. Sestrin 2 protects against LPS-induced acute lung injury by inducing mitophagy in alveolar macrophages. Life Sci 2020; 267:118941. [PMID: 33359748 DOI: 10.1016/j.lfs.2020.118941] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/12/2020] [Accepted: 12/16/2020] [Indexed: 12/15/2022]
Abstract
AIMS Acute lung injury (ALI) / acute respiratory distress syndrome (ARDS) is a critical clinical syndrome with complex pathology and pathogenesis. Since there is no specific treatment for ALI, it is important to study the mechanism of how ALI develop. Sestrin2 (Sesn2) plays a critical role in the regulation of cellular stress response and oxidant defense. However, the potential function of Sesn2 in ALI/ARDS and the associated mechanism remains unclear. MAIN METHODS Lipopolysaccharide (LPS) induced ALI model was performed in the wild-type and Sesn2 knockout (Sesn2-/-) mice. The nod-like receptor protein 3 (NLRP3) inflammasome, cell pyroptosis and mitophagy were detected by western blots, immunofluorescent staining, flow cytometry. Lung injury were measured by histopathology and electron microscopy. KEY FINDINGS Knockout of Sesn2 enhanced LPS-induced ALI. As detailed in Sesn2-/- mice, NLRP3 inflammasome and cell pyroptosis were increased in lungs; IL-1β and IL-18 in serum and bronchoalveolar lavage fluid (BALF) were further promoted; In the isolated alveolar macrophages from Sesn2-/- mice, mitophagy induced by LPS was markedly inhibited, while reactive oxygen species (ROS), mitochondrial damage and cell pyroptosis were enhanced. Knocking down or overexpressing Sensn2 in J774.A1 cells demonstrated Sesn2 promoted Sequestosome1 (SQSTM1) expression and mitophagy by PTEN-induced putative kinase 1 (Pink1)/Parkin pathway. SIGNIFICANCE Sesn2 protected ALI by promoting mitophagy that exerts protection of AMs pyroptosis and negative regulation of NLRP3 inflammasomes. These data indicated Sesn2 might be a potential target for ALI treatment.
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Affiliation(s)
- Dongdong Wu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hui Zhang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Qiuge Wu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Fang Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Yang Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Shuai Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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166
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Schwaid AG, Spencer KB. Strategies for Targeting the NLRP3 Inflammasome in the Clinical and Preclinical Space. J Med Chem 2020; 64:101-122. [PMID: 33351619 DOI: 10.1021/acs.jmedchem.0c01307] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Inhibiting the NLRP3 inflammasome mediates inflammation in an extensive number of preclinical models. As excitement in this field has grown, several companies have recently initiated testing of direct NLRP3 inhibitors in the clinic. At the same time, the NLRP3 inflammasome is part of a larger pro-inflammatory pathway, whose modulation is also being explored. Multiple targets in this pathway are already impinged upon by molecules that have been through clinical trials. These data, informed by the growing mechanistic understanding of the NLRP3 inflammasome in the preclinical space, provide a rich backdrop to assess the current state of the field. Here we explore attempts to inhibit the NLRP3 inflammasome in light of clinical and preclinical data around efficacy and safety.
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Affiliation(s)
- Adam G Schwaid
- Chemical Biology, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
| | - Kerrie B Spencer
- Chemical Biology, Merck & Co., Inc., 33 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States
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167
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Surabhi S, Cuypers F, Hammerschmidt S, Siemens N. The Role of NLRP3 Inflammasome in Pneumococcal Infections. Front Immunol 2020; 11:614801. [PMID: 33424869 PMCID: PMC7793845 DOI: 10.3389/fimmu.2020.614801] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 11/16/2020] [Indexed: 12/11/2022] Open
Abstract
Inflammasomes are innate immune sensors that regulate caspase-1 mediated inflammation in response to environmental, host- and pathogen-derived factors. The NLRP3 inflammasome is highly versatile as it is activated by a diverse range of stimuli. However, excessive or chronic inflammasome activation and subsequent interleukin-1β (IL-1β) release are implicated in the pathogenesis of various autoimmune diseases such as rheumatoid arthritis, inflammatory bowel disease, and diabetes. Accordingly, inflammasome inhibitor therapy has a therapeutic benefit in these diseases. In contrast, NLRP3 inflammasome is an important defense mechanism against microbial infections. IL-1β antagonizes bacterial invasion and dissemination. Unfortunately, patients receiving IL-1β or inflammasome inhibitors are reported to be at a disproportionate risk to experience invasive bacterial infections including pneumococcal infections. Pneumococci are typical colonizers of immunocompromised individuals and a leading cause of community-acquired pneumonia worldwide. Here, we summarize the current limited knowledge of inflammasome activation in pneumococcal infections of the respiratory tract and how inflammasome inhibition may benefit these infections in immunocompromised patients.
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Affiliation(s)
| | | | | | - Nikolai Siemens
- Department of Molecular Genetics and Infection Biology, University of Greifswald, Greifswald, Germany
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168
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Sharma I, Behl T, Bungau S, Sachdeva M, Kumar A, Zengin G, Arora S. Understanding the role of Inflammasome in Angina Pectoris. Curr Protein Pept Sci 2020; 22:CPPS-EPUB-112184. [PMID: 33292150 DOI: 10.2174/1389203721999201208200242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 10/08/2020] [Accepted: 10/19/2020] [Indexed: 11/22/2022]
Abstract
Angina pectoris, associated with coronary artery disease, a cardiovascular disease where, pain is caused by adverse oxygen supply in myocardium, resulting in contractility and discomfort in chest. Inflammasomes, triggered by stimuli due to infection and cellular stress have identified to play a vital role in the progression of cardiovascular disorders and thus, causing various symptoms like angina pectoris. Nlrp3 inflammasome, a key contributor in the pathogenesis of angina pectoris, requires activation and primary signaling for the commencement of inflammation. Nlrp3 inflammasome elicit out an inflammatory response by emission of pro inflammatory cytokines by ROS (reactive oxygen species) production, mobilization of K+ efflux and Ca2+ and by activation of lysosome destabilization that eventually causes pyroptosis, a programmed cell death process. Thus, inflammasome are considered to be one of the factors involved in the progression of coronary artery diseases and have an intricate role in development of angina pectoris.
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Affiliation(s)
- Ishita Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine of Pharmacy, University of Oradea, Oradea,. Romania
| | - Monika Sachdeva
- Fatima College of Health Science, Al Ain,. United Arab Emirates
| | - Arun Kumar
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
| | - Gokhan Zengin
- Department of Biology, Faculty of Science, University Campus, Konya,. Turkey
| | - Sandeep Arora
- Chitkara College of Pharmacy, Chitkara University, Punjab,. India
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169
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Fan J, Martinez-Arguelles DB, Papadopoulos V. Genome-wide expression analysis of a new class of lncRNAs driven by SINE B2. Gene 2020; 768:145332. [PMID: 33278552 DOI: 10.1016/j.gene.2020.145332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/13/2020] [Accepted: 11/27/2020] [Indexed: 12/30/2022]
Abstract
Repetitive short interspersed elements B2 (SINE B2) have been shown to possess two promoters: polymerase III promoter for producing short B2-S RNAs and polymerase II promoter for driving the expression of long non-coding RNA (B2-AS lncRNAs). Using a B2-antisense (B2-AS) transcript sequence from the SINE B2 resident in mitochondrial translocator protein gene (Tspo) locus, we constructed a B2-AS specific RNA library and identified 96,862 sequences encoding potential B2-mediated lncRNAs, of which 55,592 lncRNAs with more than 390 nt in length possess a feature of potential genomic locus-specific effect. In addition, small RNA-Northern hybridization showed that the new B2-AS lncRNAs are constantly degraded by the Dicer1 enzyme, a finding further confirmed by in vitro Dicer1 enzyme digestion. B2-AS lncRNAs regulate the expression of target genes in a different fashion than B2-S RNAs. Genome-wide cross-comparison with mRNA mapping showed a total of 904 mRNA loci directly targeted by B2-AS lncRNAs, suggesting a locus-specific effect of the B2-AS lncRNAs and a general effect of B2-S RNAs.
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Affiliation(s)
- Jinjiang Fan
- The Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Department of Medicine, McGill University, Montreal, Quebec, Canada
| | | | - Vassilios Papadopoulos
- The Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Department of Medicine, McGill University, Montreal, Quebec, Canada; Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, United States.
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170
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Tian H, Wu J, Ma M. Implications of macrophage polarization in corneal transplantation rejection. Transpl Immunol 2020; 64:101353. [PMID: 33238187 DOI: 10.1016/j.trim.2020.101353] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/20/2020] [Accepted: 11/20/2020] [Indexed: 02/07/2023]
Abstract
Corneal transplantation rejection remains an urgent problem threatening the success rate of high-risk patients. Macrophages are involved in the rejection of corneal transplants. Macrophages have M1 and M2 phenotypes, classified according their response to external stimuli. Macrophage polarization, through which these distinct forms are activated, is not only involved in the occurrence and development of inflammation, tumors, and autoimmune and other diseases, but also participates in graft rejection. This study provides an overview of the types of macrophages and mechanisms of their polarization, and review current knowledge regarding their involvement in corneal transplantation and potential therapeutic applications. Consideration of the relationship between the direction of macrophage polarization and the determination of graft survival and how it can be modified, is important for the development of novel corneal anti-rejection therapies.
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Affiliation(s)
- Huiwen Tian
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Jing Wu
- Department of Huiqiao Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
| | - Ming Ma
- Department of Ophthalmology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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171
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Williamson J, Davison G. Targeted Antioxidants in Exercise-Induced Mitochondrial Oxidative Stress: Emphasis on DNA Damage. Antioxidants (Basel) 2020; 9:E1142. [PMID: 33213007 PMCID: PMC7698504 DOI: 10.3390/antiox9111142] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 12/13/2022] Open
Abstract
Exercise simultaneously incites beneficial (e.g., signal) and harming (e.g., damage to macromolecules) effects, likely through the generation of reactive oxygen and nitrogen species (RONS) and downstream changes to redox homeostasis. Given the link between nuclear DNA damage and human longevity/pathology, research attempting to modulate DNA damage and restore redox homeostasis through non-selective pleiotropic antioxidants has yielded mixed results. Furthermore, until recently the role of oxidative modifications to mitochondrial DNA (mtDNA) in the context of exercising humans has largely been ignored. The development of antioxidant compounds which specifically target the mitochondria has unveiled a number of exciting avenues of exploration which allow for more precise discernment of the pathways involved with the generation of RONS and mitochondrial oxidative stress. Thus, the primary function of this review, and indeed its novel feature, is to highlight the potential roles of mitochondria-targeted antioxidants on perturbations to mitochondrial oxidative stress and the implications for exercise, with special focus on mtDNA damage. A brief synopsis of the current literature addressing the sources of mitochondrial superoxide and hydrogen peroxide, and available mitochondria-targeted antioxidants is also discussed.
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Affiliation(s)
- Josh Williamson
- Sport and Exercise Sciences Research Institute, Ulster University, Jordanstown Campus, Newtownabbey BT37 0QB, Northern Ireland, UK;
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172
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Yang L, Zhou L, Wang X, Wang W, Wang J. Inhibition of HMGB1 involved in the protective of salidroside on liver injury in diabetes mice. Int Immunopharmacol 2020; 89:106987. [PMID: 33217691 DOI: 10.1016/j.intimp.2020.106987] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/04/2020] [Accepted: 09/05/2020] [Indexed: 12/22/2022]
Abstract
High mobility group box 1 (HMGB1) is a nuclear protein that is released on injury triggers inflammation. This study aims to elucidate the effects of salidroside on diabetes-induced liver inflammation. The levels of glucose, inflammatory cytokines and hepatic functional parameters in serum and liver of type 2 diabetic db/db mice were examined. Immunohistochemistry, immunofluorescence and western blot tests were performed to determine the mechanisms underlying the action. Palmitic acid (PA) or HMGB1-stimulated was adopted as an in vitro cell model. Salidroside treatment improved glucose tolerance, lipid profiles while decreased the production of inflammatory cytokines. It also reduced the levels of serum biochemical markers. In addition, salidroside inhibited HMGB1 signaling pathway in db/db mice. In the salidroside treatment significantly inhibited PA or HMGB1 induced inflammatory signaling pathway, too. HMGB1 inhibitors and HMGB1 knockdown both hindered PA-induced HMGB1 signaling pathway, showing the same effect as salidroside. Salidroside treatment significantly alleviates insulin resistance, hyperglycemia and hepatic inflammation in db/db mice, and also showed beneficial to PA-stimulated. Salidroside proves to control hyperglycemia and hepatic inflammation via inhibiting HMGB1/RAGE/NF-κB and HMGB1/TLR4/NLRP3 signaling pathways.
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Affiliation(s)
- Limin Yang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, PR China.
| | - Lin Zhou
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, PR China.
| | - Xiaohui Wang
- Department of Ultrasonography, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, PR China.
| | - Wang Wang
- Department of Physiology and Neurobiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, Henan, PR China.
| | - Jin Wang
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jianshe East Road, Zhengzhou, Henan Province 450052, PR China.
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173
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Haritha VH, George A, Shaji BV, Anie Y. NET-associated citrullinated histones promote LDL aggregation and foam cell formation in vitro. Exp Cell Res 2020; 396:112320. [PMID: 33058833 DOI: 10.1016/j.yexcr.2020.112320] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/06/2020] [Accepted: 10/08/2020] [Indexed: 11/16/2022]
Abstract
Neutrophils have been recently identified in the atherosclerotic lesion and they can release neutrophil extracellular trap (NET) under the pro-inflammatory conditions prevailing in the lesion. Citrullinated histones (Cit-histones) are the major type of citrullinated proteins associated with NET release. Since elevated levels of citrullinated proteins have been detected in inflammatory diseases including atherosclerosis, this study analysed the role played by NET and Cit-histones in different atherogenic events in vitro. First, neutrophil recruitment and NET release in the presence of low-density lipoprotein (LDL) and oxidised LDL (Ox-LDL) were analysed by Boyden's chamber method and microscopy respectively. Then, LDL oxidation and LDL aggregation in the presence of NET and Cit-histones were analysed spectroscopically. Foam cell formation in the presence of NET or Cit-histone was studied by both microscopic and spectroscopic methods. While neutrophil recruitment was facilitated by Ox-LDL and not by LDL, the extent of NET release was significantly increased in the presence of both LDL and Ox-LDL. In the presence of NET, LDL oxidation, aggregation and foam cell formation were found to be increased. Cit-histones were found to accelerate LDL aggregation and foam cell formation at higher citrulline levels. Altogether, the results suggest that both NET and NET-associated Cit-histone released at the lesion can play major roles as pro-atherogenic mediators. Inhibiting the action of NET or Cit-histone would, therefore, be beneficial in slowing down atherosclerotic progression.
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Affiliation(s)
- V H Haritha
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India.
| | - Anjana George
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India.
| | - Binchu V Shaji
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India.
| | - Y Anie
- School of Biosciences, Mahatma Gandhi University, Kottayam, Kerala, 686560, India.
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174
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Zhang M, He Q, Chen G, Li PA. Suppression of NLRP3 Inflammasome, Pyroptosis, and Cell Death by NIM811 in Rotenone-Exposed Cells as an in vitro Model of Parkinson's Disease. NEURODEGENER DIS 2020; 20:73-83. [PMID: 33176317 DOI: 10.1159/000511207] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 08/28/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) is characterized by the selective death of dopaminergic neurons in the substantia nigra. Recently, NLRP3 inflammasome and pyroptosis were found to be associated with PD. Cyclosporine A (CsA), an immunosuppressant, reduces neuronal death in PD. However, CsA could hardly pass through the blood-brain barrier (BBB) and high dose is associated with severe side effects and toxicity. N-methyl-4-isoleucine-cyclosporine (NIM811) is a CsA derivate that can pass through the BBB. However, little is known about its effect on PD. OBJECTIVE The objectives of this study were to explore the mechanism of rotenone-induced cell damage and to examine the protective effects of NIM811 on the neurotoxicity of a Parkinson-like in vitro model induced by rotenone. METHODS Murine hippocampal HT22 cells were cultured with the mitochondrial complex I inhibitor rotenone, a widely used pesticide that has been used for many years as a tool to induce a PD model in vitro and in vivo and proven to be reproducible. NIM811 was added to the culture media 3 h prior to the rotenone incubation. Cell viability was determined by resazurin assay, reactive oxygen species (ROS) production by dihydroethidine (DHE), and mitochondrial membrane potential by tetramethyl rhodamine methyl ester (TMRM). TUNEL and caspase-1 immunofluorescent double staining was used to detect pyroptosis. NLRP3, caspase-1, pro-caspase-1, GSDMD, and interleukin-18 (IL-18) were measured using Western blotting after 24 h of rotenone incubation. The reactivity of interleukin-1β (IL-1β) was determined by ELISA. RESULTS Our results demonstrated that rotenone caused more than 40% of cell death, increased ROS production, and reduced mitochondrial membrane potential, while NIM811 reversed these alterations. Immunofluorescent double staining showed that rotenone increased the percentage of caspase-1 and TUNEL double-labelled cells, an indication of pyroptosis, after 24 h of incubation. The protein expression of NLRP3, caspase-1, pro-caspase-1, GSDMD, IL-18, and IL-1β was significantly increased after 24 h of rotenone incubation. NIM811 suppressed rotenone-induced pyroptosis and downregulated the protein expression of NLRP3, caspase-1, pro-caspase-1, GSDMD, IL-1β, and IL-18. CONCLUSION These results provide evidence that rotenone activates the NLRP3 inflammomere and induces pyroptosis. NIM811 protects the cell from rotenone-induced damage and inhibits NLRP3 inflammasome and pyroptosis. NIM811 might serve as a potential therapeutic drug in the treatment of PD.
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Affiliation(s)
- Minghao Zhang
- Department of Pathophysiology, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China.,Department of Pharmaceutical Sciences, Biomanufacturing Research Institute Biotechnology Enterprise (BRITE), College of Arts and Sciences, North Carolina Central University, Durham, North Carolina, USA.,Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Qingping He
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute Biotechnology Enterprise (BRITE), College of Arts and Sciences, North Carolina Central University, Durham, North Carolina, USA
| | - Guisheng Chen
- Department of Neurology, Neuroscience Center, General Hospital of Ningxia Medical University, Key Laboratory of Craniocerebral Diseases, Yinchuan, China
| | - P Andy Li
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute Biotechnology Enterprise (BRITE), College of Arts and Sciences, North Carolina Central University, Durham, North Carolina, USA,
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175
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Daiber A, Kuntic M, Hahad O, Delogu LG, Rohrbach S, Di Lisa F, Schulz R, Münzel T. Effects of air pollution particles (ultrafine and fine particulate matter) on mitochondrial function and oxidative stress - Implications for cardiovascular and neurodegenerative diseases. Arch Biochem Biophys 2020; 696:108662. [PMID: 33159890 DOI: 10.1016/j.abb.2020.108662] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 02/06/2023]
Abstract
Environmental pollution is a major cause of global mortality and burden of disease. All chemical pollution forms together may be responsible for up to 12 million annual excess deaths as estimated by the Lancet Commission on pollution and health as well as the World Health Organization. Ambient air pollution by particulate matter (PM) and ozone was found to be associated with an all-cause mortality rate of up to 9 million in the year 2015, with the majority being of cerebro- and cardiovascular nature (e.g. stroke and ischemic heart disease). Recent evidence suggests that exposure to airborne particles and gases contributes to and accelerates neurodegenerative diseases. Especially, airborne toxic particles contribute to these adverse health effects. Whereas it is well established that air pollution in the form of PM may lead to dysregulation of neurohormonal stress pathways and may trigger inflammation as well as oxidative stress, leading to secondary damage of cardiovascular structures, the mechanistic impact of PM-induced mitochondrial damage and dysfunction is not well established. With the present review we will discuss similarities between mitochondrial damage and dysfunction observed in the development and progression of cardiovascular disease and neurodegeneration as well as those adverse mitochondrial pathomechanisms induced by airborne PM.
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Affiliation(s)
- Andreas Daiber
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany.
| | - Marin Kuntic
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Germany
| | - Omar Hahad
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Lucia G Delogu
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
| | - Susanne Rohrbach
- Institute of Physiology, Justus-Liebig University, Giessen, Germany
| | - Fabio Di Lisa
- Department of Biomedical Sciences, University of Padova, 35131, Padova, Italy
| | - Rainer Schulz
- Institute of Physiology, Justus-Liebig University, Giessen, Germany
| | - Thomas Münzel
- Department of Cardiology, University Medical Center Mainz, Johannes Gutenberg University, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany.
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176
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Brand MD. Riding the tiger - physiological and pathological effects of superoxide and hydrogen peroxide generated in the mitochondrial matrix. Crit Rev Biochem Mol Biol 2020; 55:592-661. [PMID: 33148057 DOI: 10.1080/10409238.2020.1828258] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Elevated mitochondrial matrix superoxide and/or hydrogen peroxide concentrations drive a wide range of physiological responses and pathologies. Concentrations of superoxide and hydrogen peroxide in the mitochondrial matrix are set mainly by rates of production, the activities of superoxide dismutase-2 (SOD2) and peroxiredoxin-3 (PRDX3), and by diffusion of hydrogen peroxide to the cytosol. These considerations can be used to generate criteria for assessing whether changes in matrix superoxide or hydrogen peroxide are both necessary and sufficient to drive redox signaling and pathology: is a phenotype affected by suppressing superoxide and hydrogen peroxide production; by manipulating the levels of SOD2, PRDX3 or mitochondria-targeted catalase; and by adding mitochondria-targeted SOD/catalase mimetics or mitochondria-targeted antioxidants? Is the pathology associated with variants in SOD2 and PRDX3 genes? Filtering the large literature on mitochondrial redox signaling using these criteria highlights considerable evidence that mitochondrial superoxide and hydrogen peroxide drive physiological responses involved in cellular stress management, including apoptosis, autophagy, propagation of endoplasmic reticulum stress, cellular senescence, HIF1α signaling, and immune responses. They also affect cell proliferation, migration, differentiation, and the cell cycle. Filtering the huge literature on pathologies highlights strong experimental evidence that 30-40 pathologies may be driven by mitochondrial matrix superoxide or hydrogen peroxide. These can be grouped into overlapping and interacting categories: metabolic, cardiovascular, inflammatory, and neurological diseases; cancer; ischemia/reperfusion injury; aging and its diseases; external insults, and genetic diseases. Understanding the involvement of mitochondrial matrix superoxide and hydrogen peroxide concentrations in these diseases can facilitate the rational development of appropriate therapies.
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177
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Killackey SA, Philpott DJ, Girardin SE. Mitophagy pathways in health and disease. J Cell Biol 2020; 219:e202004029. [PMID: 32926082 PMCID: PMC7594502 DOI: 10.1083/jcb.202004029] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 02/07/2023] Open
Abstract
Mitophagy is an evolutionarily conserved process involving the autophagic targeting and clearance of mitochondria destined for removal. Recent insights into the complex nature of the overlapping pathways regulating mitophagy illustrate mitophagy's essential role in maintaining the health of the mitochondrial network. In this review, we highlight recent studies that have changed the way mitophagy is understood, from initiation through lysosomal degradation. We outline the numerous mitophagic receptors and triggers, with a focus on basal and physiologically relevant cues, offering insight into why they lead to mitochondrial removal. We also explore how mitophagy maintains mitochondrial homeostasis at the organ and system levels and how a loss of mitophagy may play a role in a diverse group of diseases, including cardiovascular, metabolic, and neurodegenerative diseases. With disrupted mitophagy affecting such a wide array of physiological processes, a deeper understanding of how to modulate mitophagy could provide avenues for numerous therapies.
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Affiliation(s)
- Samuel A. Killackey
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Dana J. Philpott
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Stephen E. Girardin
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
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178
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Huang T, Pu Q, Zhou C, Lin P, Gao P, Zhang X, Chu Y, Yue B, Wu M. MicroRNA-302/367 Cluster Impacts Host Antimicrobial Defense via Regulation of Mitophagic Response Against Pseudomonas aeruginosa Infection. Front Immunol 2020; 11:569173. [PMID: 33117356 PMCID: PMC7576609 DOI: 10.3389/fimmu.2020.569173] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/21/2020] [Indexed: 02/05/2023] Open
Abstract
Mitophagy has recently been implicated in bacterial infection but the underlying mechanism remains largely unknown. Here, we uncover a role of microRNA-302/367 cluster in regulating mitophagy and its associated host response against bacterial infection. We demonstrate that miR-302/367 cluster expression was significantly increased after Pseudomonas aeruginosa infection. Enhanced expression of miR-302/367 cluster accelerated the mitophagic response in macrophages, thus increasing clearance of invading P. aeruginosa by regulating production of reactive oxygen species (ROS), while application of miR-302/367 cluster inhibitors decreased bacterial clearance. Blocking mitophagy with siRNA against mitophagy receptor prohibitin 2 (PHB2) reduced the effect of miR-302/367 cluster on induction of mitophagy and its-associated P. aeruginosa elimination. In addition, we found that miR-302/367 cluster also increased bacterial clearance in mouse model. Mechanistically, we illustrate that miR-302/367 cluster binds to the 3′-untranslated region of nuclear factor kappa B (NF-κB), a negative regulator of mitophagy, accelerated the process of mitophagy by inhibiting NF-κB. Furthermore, inhibition of NF-κB in macrophages attenuated the ROS or cytokines production and may reduce cell injury by P. aeruginosa infection to maintain cellular homeostasis. Collectively, our findings elucidate that miR-302/367 cluster functions as potent regulators in mitophagy-mediated P. aeruginosa elimination and pinpoint an unexpected functional link between miRNAs and mitophagy.
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Affiliation(s)
- Ting Huang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China.,Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China.,Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, United States
| | - Qinqin Pu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, United States.,State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Chuanmin Zhou
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, United States
| | - Ping Lin
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, United States
| | - Pan Gao
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, United States.,State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xiuyue Zhang
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Yiwen Chu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Bisong Yue
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, China
| | - Min Wu
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND, United States
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179
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Huang XH, Ma Y, Zheng MM, Chen N, Hu MN, Wu LY, Zheng Y, Lou YL, Xie DL. NLRP3 and mTOR Reciprocally Regulate Macrophage Phagolysosome Formation and Acidification Against Vibrio vulnificus Infection. Front Cell Dev Biol 2020; 8:587961. [PMID: 33117816 PMCID: PMC7578225 DOI: 10.3389/fcell.2020.587961] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/07/2020] [Indexed: 12/19/2022] Open
Abstract
The marine bacterium Vibrio vulnificus causes potentially fatal bloodstream infections, typically in patients with chronic liver diseases. The inflammatory response and anti-bacterial function of phagocytes are crucial for limiting bacterial infection in the human hosts. How V. vulnificus affects macrophages after phagocytosis is unclear. In this report, we found that the bactericidal activity of macrophages to internalize V. vulnificus was dependent on mammalian target of rapamycin (mTOR) and NOD-like receptor (NLR) family pyrin domain containing 3 (NLRP3) interaction. Additionally, the NLRP3 expression was dependent on mTORC1 activation. Inhibited mTORC1 or absence of NLRP3 in macrophages impaired V. vulnificus-induced phagosome acidification and phagolysosome formation, leading to a reduction of intracellular bacterial clearance. mTORC1 signaling overactivation could increase NLRP3 expression and restore insufficient phagosome acidification. Together, these findings indicate that the intracellular bactericidal activity of macrophages responding to V. vulnificus infection is tightly controlled by the crosstalk of NLRP3 and mTOR and provide critical insight into the host bactericidal activity basis of clearance of V. vulnificus through lyso/phagosome.
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Affiliation(s)
- Xian-Hui Huang
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Yao Ma
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Meng-Meng Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Na Chen
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Mei-Na Hu
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Liu-Ying Wu
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China
| | - Yi Zheng
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Yong-Liang Lou
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
| | - Dan-Li Xie
- Department of Microbiology and Immunology, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, China.,Key Laboratory of Laboratory Medicine, Ministry of Education of China, Wenzhou, China.,Wenzhou Key Laboratory of Sanitary Microbiology, Wenzhou, China
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180
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Wang H, Zhang Y, Ma X, Wang W, Xu X, Huang M, Xu L, Shi H, Yuan T, Jiang W, Wang A, Xu T. Spinal TLR4/P2X7 Receptor-Dependent NLRP3 Inflammasome Activation Contributes to the Development of Tolerance to Morphine-Induced Antinociception. J Inflamm Res 2020; 13:571-582. [PMID: 33061523 PMCID: PMC7522404 DOI: 10.2147/jir.s266995] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/04/2020] [Indexed: 12/14/2022] Open
Abstract
Background Long-term use of morphine induces antinociceptive tolerance and limits its clinical efficacy. Neuroinflammation in the spinal cord is thought to play a pivotal role in the development of morphine tolerance. Toll-like receptor 4 (TLR4) and P2X7 receptor (P2X7R) are key modulators of neuroinflammation. Recent studies show that the Nod-like receptor protein 3 (NLRP3) inflammasome play a crucial role in microglia-mediated neuroinflammation. Thus far, the mechanism underlying NLRP3 inflammasome activation during morphine-induced tolerance is not yet fully understood. Therefore, we sought to investigate the mechanisms of NLRP3 inflammasome activation and its role in the development of morphine-induced tolerance. Methods Repeated morphine treatment through intrathecal injection (15 μg once daily for 7 days) was given to establish antinociceptive tolerance in mice. Tail-flick latency was used to evaluate morphine-induced antinociception. NLRP3 knockout mice were used to assess the role of NLRP3 inflammasome in morphine tolerance. TLR4 knockout mice and A438079, a P2X7R antagonist, were used to assess the role of TLR4 and P2X7R in chronic morphine-induced NLRP3 inflammasome activation. Western blot and immunofluorescence were used for quantitative comparison. Results Repeated morphine treatment increased the expression of NLRP3. Knockout of NLRP3 attenuated morphine-induced tolerance and suppressed morphine-induced activation of microglia. Knockout of TLR4 alleviated morphine tolerance and chronic morphine-induced upregulation of spinal NLRP3. Inhibition of spinal P2X7R with A438079 not only prevented the development of morphine-induced tolerance but also inhibited repeated morphine treatment-induced upregulation of spinal NLRP3. Furthermore, spinal NLRP3, TLR4 and P2X7R were collectively colocalized with the microglia marker Iba1. Conclusion This study demonstrates that the NLRP3 inflammasome in microglia plays a crucial role in morphine tolerance and that both TLR4- and P2X7R-dependent pathways are required for NLRP3 inflammasome activation over the course of the development of morphine-induced tolerance. Our results provide a new perspective for the targeted treatment of morphine-induced tolerance.
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Affiliation(s)
- Haiyan Wang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Yu Zhang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Xiaqing Ma
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Wenying Wang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Xiaotao Xu
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Min Huang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Liang Xu
- Heart Health Center, East Hospital, Tongji University School of Medicine, Shanghai 200120, People's Republic of China
| | - Haibo Shi
- Shanghai Key Laboratory of Sleep Disordered Breathing, Shanghai 200233, People's Republic of China
| | - Tifei Yuan
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, People's Republic of China
| | - Wei Jiang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Aizhong Wang
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China
| | - Tao Xu
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, People's Republic of China.,Department of Anesthesiology, Tongzhou People's Hospital, Nantong 226300, People's Republic of China
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181
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Zhang Y, Zhao Y, Zhang J, Yang G. Mechanisms of NLRP3 Inflammasome Activation: Its Role in the Treatment of Alzheimer's Disease. Neurochem Res 2020; 45:2560-2572. [PMID: 32929691 DOI: 10.1007/s11064-020-03121-z] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 08/27/2020] [Accepted: 08/30/2020] [Indexed: 12/24/2022]
Abstract
Alzheimer's disease (AD) is a common neurodegenerative disease of progressive dementia which is characterized pathologically by extracellular neuritic plaques containing aggregated amyloid beta (Aβ) and intracellular hyperphosphorylated tau protein tangles in cerebrum. It has been confirmed that microglia-specific nucleotide-binding oligomerization domain (NOD)-like receptor protein 3 (NLRP3) inflammasome-mediated chronic neuroinflammation plays a crucial role in the pathogenesis of AD. Stimulated by Aβ deposition, NLRP3 assembles and activates within microglia in the AD brain, leading to caspase-1 activation along with downstream interleukin (IL)-1β secretion, and subsequent inflammatory events. Activation of the NLRP3 inflammasome mediates microglia to exhibit inflammatory M1 phenotype, with high expression of caspase-1 and IL-1β. This leads to Aβ deposition and neuronal loss in the amyloid precursor protein (APP)/human presenilin-1 (PS1) mouse model of AD. However, NLRP3 or caspase-1 deletion in APP/PS1 mice promotes microglia to transform to an anti-inflammatory M2 phenotype, with decreased secretion of caspase-1 and IL-1β. It also results in improved cognition, enhanced Aβ clearance, and a lower cerebral inflammatory response. This result suggests that the NLRP3 inflammasome may be an appropriate target for reducing neuroinflammation and alleviating pathological processes in AD. In the present review, we summarize the generally accepted regulatory mechanisms of NLRP3 inflammasome activation, and explore its role in neuroinflammation. Furthermore, we speculate on the possible roles of microglia-specific NLRP3 activation in AD pathogenesis and consider potential therapeutic interventions targeting the NLRP3 inflammasome in AD.
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Affiliation(s)
- Yidan Zhang
- Department of Geriatrics, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, Hebei, 050000, People's Republic of China
| | - Yuan Zhao
- Department of Geriatrics, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, Hebei, 050000, People's Republic of China
| | - Jian Zhang
- Department of Geriatrics, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, Hebei, 050000, People's Republic of China
| | - Guofeng Yang
- Department of Geriatrics, Second Hospital of Hebei Medical University, 215 Hepingxi Road, Shijiazhuang, Hebei, 050000, People's Republic of China.
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182
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Nagakannan P, Tabeshmehr P, Eftekharpour E. Oxidative damage of lysosomes in regulated cell death systems: Pathophysiology and pharmacologic interventions. Free Radic Biol Med 2020; 157:94-127. [PMID: 32259579 DOI: 10.1016/j.freeradbiomed.2020.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 12/16/2022]
Abstract
Lysosomes are small specialized organelles containing a variety of different hydrolase enzymes that are responsible for degradation of all macromolecules, entering the cells through the endosomal system or originated from the internal sources. This allows for transport and recycling of nutrients and internalization of surface proteins for antigen presentation as well as maintaining cellular homeostasis. Lysosomes are also important storage compartments for metal ions and nutrients. The integrity of lysosomal membrane is central to maintaining their normal function, but like other cellular membranes, lysosomal membrane is subject to damage mediated by reactive oxygen species. This results in spillage of lysosomal enzymes into the cytoplasm, leading to proteolytic damage to cellular systems and organelles. Several forms of lysosomal dependent cell death have been identified in diseases. Examination of these events are important for finding treatment strategies relevant to cancer or neurodegenerative diseases as well as autoimmune deficiencies. In this review, we have examined the current literature on involvement of lysosomes in induction of programed cell death and have provided an extensive list of therapeutic approaches that can modulate cell death. Exploitation of these mechanisms can lead to novel therapies for cancer and neurodegenerative diseases.
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Affiliation(s)
- Pandian Nagakannan
- Regenerative Medicine Program and Spinal Cord Research Centre, Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Parisa Tabeshmehr
- Regenerative Medicine Program and Spinal Cord Research Centre, Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Eftekhar Eftekharpour
- Regenerative Medicine Program and Spinal Cord Research Centre, Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada.
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183
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Abusalamah H, Reel JM, Lupfer CR. Pyruvate affects inflammatory responses of macrophages during influenza A virus infection. Virus Res 2020; 286:198088. [PMID: 32634445 PMCID: PMC7345311 DOI: 10.1016/j.virusres.2020.198088] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/26/2020] [Accepted: 07/01/2020] [Indexed: 12/15/2022]
Abstract
Pyruvate is the end product of glycolysis and transported into the mitochondria for use in the tricarboxylic acid (TCA) cycle. It is also a common additive in cell culture media. We discovered that inclusion of sodium pyruvate in culture media during infection of mouse bone marrow derived macrophages with influenza A virus impaired cytokine production (IL-6, IL-1β, and TNF-α). Sodium pyruvate did not inhibit viral RNA replication. Instead, the addition of sodium pyruvate alters cellular metabolism and diminished mitochondrial reactive oxygen species (ROS) production and lowered immune signaling. Overall, sodium pyruvate affects the immune response produced by macrophages but does not inhibit virus replication.
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Affiliation(s)
- Hazar Abusalamah
- Department of Biology, Missouri State University, 901 S. National Ave. Springfield, MO, 65897, USA
| | - Jessica M Reel
- Department of Biology, Missouri State University, 901 S. National Ave. Springfield, MO, 65897, USA
| | - Christopher R Lupfer
- Department of Biology, Missouri State University, 901 S. National Ave. Springfield, MO, 65897, USA.
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184
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Xu Z, Huang J, Kong D, Yang Y, Guo L, Jia X, Zhong G, Liu Z. Potent half-sandwich Ru(Ⅱ) N^N (aryl-BIAN) complexes: Lysosome-mediated apoptosis, in vitro and in vivo anticancer activities. Eur J Med Chem 2020; 207:112763. [PMID: 32882612 DOI: 10.1016/j.ejmech.2020.112763] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/09/2020] [Accepted: 08/15/2020] [Indexed: 12/22/2022]
Abstract
Herein a new series of organometallic half-sandwich Ru(Ⅱ) complexes bearing aryl-BIAN chelating ligands with various electron-withdrawing and electron-donating substituents have been developed as theranostic agents. All the complexes display much higher anti-proliferative potency than the clinical chemotherapeutic drug cisplatin towards seven cancer cell lines. The anti-proliferative efficacy of these complexes is correlated to their electron-withdrawing ability. Interestingly, complex Ru1 also potently suppresses cancer cell migration in vitro and effectively inhibit tumor growth in vivo in a CT26 colon cancer mouse xenograft model. Mechanisms of action studies display that Ru1 can favorably accumulate in lysosome and exerts anti-cancer potency by inducing a series of events related to lysosomal dysfunction in CT26 cells. Interestingly, inhibition of lysosomal enzymes leads to suppression of cytotoxicity and apoptosis induced by Ru1. Our results elucidate that complex Ru1 can elicit cytotoxicity through lysosome-mediated apoptosis in vitro and suppress tumor growth in vivo.
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Affiliation(s)
- Zhishan Xu
- College of Chemistry, Chemistry Engineering and Materials Science, Shandong Normal University, Jinan, 250014, China; Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China
| | - Jie Huang
- Qingdao University of Science and Technology, Qingdao, 266061, China.
| | - Deliang Kong
- Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China
| | - Yuliang Yang
- Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China
| | - Lihua Guo
- Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China
| | - Xianglei Jia
- Henan Key Laboratory of Neural Regeneration, The First Affiliated Hospital of Xinxiang Medical University, Weihui, 453100, China
| | - Genshen Zhong
- Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, China
| | - Zhe Liu
- Institute of Anticancer Agents Development and Theranostic Application, The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China.
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185
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Interaction of Macrophages and Cholesterol-Dependent Cytolysins: The Impact on Immune Response and Cellular Survival. Toxins (Basel) 2020; 12:toxins12090531. [PMID: 32825096 PMCID: PMC7551085 DOI: 10.3390/toxins12090531] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/13/2020] [Accepted: 08/15/2020] [Indexed: 02/07/2023] Open
Abstract
Cholesterol-dependent cytolysins (CDCs) are key virulence factors involved in many lethal bacterial infections, including pneumonia, necrotizing soft tissue infections, bacterial meningitis, and miscarriage. Host responses to these diseases involve myeloid cells, especially macrophages. Macrophages use several systems to detect and respond to cholesterol-dependent cytolysins, including membrane repair, mitogen-activated protein (MAP) kinase signaling, phagocytosis, cytokine production, and activation of the adaptive immune system. However, CDCs also promote immune evasion by silencing and/or destroying myeloid cells. While there are many common themes between the various CDCs, each CDC also possesses specific features to optimally benefit the pathogen producing it. This review highlights host responses to CDC pathogenesis with a focus on macrophages. Due to their robust plasticity, macrophages play key roles in the outcome of bacterial infections. Understanding the unique features and differences within the common theme of CDCs bolsters new tools for research and therapy.
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186
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Feng S, Zhang Z, Mo Y, Tong R, Zhong Z, Chen Z, He D, Wan R, Gao M, Mo Y, Zhang Q, Huang Y. Activation of NLRP3 inflammasome in hepatocytes after exposure to cobalt nanoparticles: The role of oxidative stress. Toxicol In Vitro 2020; 69:104967. [PMID: 32805375 DOI: 10.1016/j.tiv.2020.104967] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/21/2020] [Accepted: 08/09/2020] [Indexed: 12/21/2022]
Abstract
With the increased use of nanomaterials and increased exposure of humans to various nanomaterials, the potential health effects of nanomaterials cannot be ignored. The hepatotoxicity of cobalt nanoparticles (Nano-Co) is largely unknown and the underlying mechanisms remain obscure. The purpose of this study was to exam the hepatotoxicity induced by Nano-Co and its potential mechanisms. Our results showed that exposure of human fetal hepatocytes L02 to Nano-Co caused a dose- and a time-dependent cytotoxicity. Besides the generation of reactive oxygen species (ROS) and mitochondrial reactive oxygen species (mtROS), exposure to Nano-Co also caused activation of NOD-like receptor protein 3 (NLRP3) inflammasome in hepatocytes. After silencing NLRP3, one component of NLRP3 inflammasome, expression by siRNA strategy, we found that upregulation of NLRP3-related proteins was abolished in hepatocytes exposed to Nano-Co. Using antioxidants to scavenge ROS and mtROS, we demonstrated that Nano-Co-induced mtROS generation was related to Nano-Co-induced NLRP3 inflammasome activation. Our findings demonstrated that Nano-Co exposure may promote intracellular oxidative stress damage, and mtROS may mediate the activation of NLRP3 inflammasome in hepatocytes exposed to Nano-Co, suggesting an important role of ROS/NLRP3 pathway in Nano-Co-induced hepatotoxicity. These results provide scientific insights into the hepatotoxicity of Nano-Co and a basis for the prevention and treatment of Nano-Co-induced cytotoxicity.
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Affiliation(s)
- Sisi Feng
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, PR China
| | - Zhenyu Zhang
- Department of Emergency, Xiang'An Hospital of Xiamen University, Xiamen, Fujian, PR China
| | - Yiqing Mo
- Community Health Care Center, Changqing Chaoming Street, Xiacheng District, Hangzhou, Zhejiang, PR China
| | - Ruirui Tong
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, PR China
| | - Zexiang Zhong
- Department of Spine Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, PR China
| | - Zhong Chen
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, PR China
| | - Dan He
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, PR China
| | - Rong Wan
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, PR China; Institute of Oncology, Fujian Medical University, Fuzhou, Fujian, PR China; Diagnostic Pathology Center, Fujian Medical University, Fuzhou, Fujian, PR China
| | - Meiqin Gao
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, PR China; Institute of Oncology, Fujian Medical University, Fuzhou, Fujian, PR China; Diagnostic Pathology Center, Fujian Medical University, Fuzhou, Fujian, PR China
| | - Yiqun Mo
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Qunwei Zhang
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Yang Huang
- Department of Pathology, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, PR China; Institute of Oncology, Fujian Medical University, Fuzhou, Fujian, PR China; Diagnostic Pathology Center, Fujian Medical University, Fuzhou, Fujian, PR China.
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187
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Zuo Y, Yin L, Cheng X, Li J, Wu H, Liu X, Gu E, Wu J. Elamipretide Attenuates Pyroptosis and Perioperative Neurocognitive Disorders in Aged Mice. Front Cell Neurosci 2020; 14:251. [PMID: 32903868 PMCID: PMC7439217 DOI: 10.3389/fncel.2020.00251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/20/2020] [Indexed: 12/16/2022] Open
Abstract
Pyroptosis is a recently characterized inflammatory form of programmed cell death that is thought to be involved in the pathogenesis of perioperative neurocognitive disorders (PND). Elamipretide (SS-31), a mitochondrial-targeted peptide with multiple pharmacological properties, including anti-inflammatory activity, has been demonstrated to protect against many neurological diseases. However, the effect of elamipretide on pyroptosis in PND has not been studied. We established an animal model of PND by performing an exploratory laparotomy on mice under isoflurane anesthesia and examined the effects of elamipretide on cognitive function, synaptic integrity, neuroinflammation, mitochondrial function, and signaling controlling pyroptosis. Our results showed that anesthesia and surgery caused mitochondrial dysfunction and abnormal morphology, activation of canonicalnod-like receptor pyrin domain-containing 3 (NLRP3) inflammasome-caspase-1 dependent pyroptosis, and downregulation of synaptic integrity-related proteins in the hippocampus in aged mice, thus leading to learning and memory deficits in behavioral tests. Remarkably, treatment with the mitochondrial-targeted peptide elamipretide not only had protective effects against mitochondrial dysfunction but also attenuated surgery-induced pyroptosis and cognitive deficits. Our results provide a promising strategy for the treatment of PND involving mitochondrial dysfunction and pyroptosis.
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Affiliation(s)
- Youmei Zuo
- Department of Anesthesiology, First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Lei Yin
- Department of Anesthesiology, Subei People's Hospital of Jiangsu Province, Yangzhou, China
| | - Xinqi Cheng
- Department of Anesthesiology, First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Jun Li
- Department of Anesthesiology, First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Hao Wu
- Department of Anesthesiology, First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Xuesheng Liu
- Department of Anesthesiology, First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Erwei Gu
- Department of Anesthesiology, First Affiliated Hospital of Anhui Medical University, Hefei, China.,Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Jing Wu
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
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188
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Burgener SS, Leborgne NGF, Snipas SJ, Salvesen GS, Bird PI, Benarafa C. Cathepsin G Inhibition by Serpinb1 and Serpinb6 Prevents Programmed Necrosis in Neutrophils and Monocytes and Reduces GSDMD-Driven Inflammation. Cell Rep 2020; 27:3646-3656.e5. [PMID: 31216481 DOI: 10.1016/j.celrep.2019.05.065] [Citation(s) in RCA: 167] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 01/31/2019] [Accepted: 05/17/2019] [Indexed: 12/20/2022] Open
Abstract
Neutrophil granule serine proteases contribute to immune responses through cleavage of microbial toxins and structural proteins. They induce tissue damage and modulate inflammation if levels exceed their inhibitors. Here, we show that the intracellular protease inhibitors Serpinb1a and Serpinb6a contribute to monocyte and neutrophil survival in steady-state and inflammatory settings by inhibiting cathepsin G (CatG). Importantly, we found that CatG efficiently cleaved gasdermin D (GSDMD) to generate the signature N-terminal domain GSDMD-p30 known to induce pyroptosis. Yet GSDMD deletion did not rescue neutrophil survival in Sb1a.Sb6a-/- mice. Furthermore, Sb1a.Sb6a-/- mice released high levels of pro-inflammatory cytokines upon endotoxin challenge in vivo in a CatG-dependent manner. Canonical inflammasome activation in Sb1a.Sb6a-/- macrophages showed increased IL-1β release that was dependent on CatG and GSDMD. Together, our findings demonstrate that cytosolic serpins expressed in myeloid cells prevent cell death and regulate inflammatory responses by inhibiting CatG and alternative activation of GSDMD.
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Affiliation(s)
- Sabrina Sofia Burgener
- Institute of Virology and Immunology, 3147 Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Nathan Georges François Leborgne
- Institute of Virology and Immunology, 3147 Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Scott J Snipas
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Guy S Salvesen
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037, USA
| | - Phillip Ian Bird
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC 3800, Australia
| | - Charaf Benarafa
- Institute of Virology and Immunology, 3147 Mittelhäusern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland.
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189
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Verma V, Kumar P, Gupta S, Yadav S, Dhanda RS, Thorlacius H, Yadav M. α-Hemolysin of uropathogenic E. coli regulates NLRP3 inflammasome activation and mitochondrial dysfunction in THP-1 macrophages. Sci Rep 2020; 10:12653. [PMID: 32724079 PMCID: PMC7387347 DOI: 10.1038/s41598-020-69501-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 07/07/2020] [Indexed: 12/16/2022] Open
Abstract
Hemolysin expressing UPEC strains have been associated with severe advanced kidney pathologies, such as cystitis and pyelonephritis, which are associated with an inflammatory response. Macrophages play an important role in regulating an inflammatory response during a urinary tract infection. We have studied the role of purified recombinant α-hemolysin in inducing inflammatory responses and cell death in macrophages. Acylation at lysine residues through HlyC is known to activate proHlyA into a fully functional pore-forming toxin, HlyA. It was observed that active α-hemolysin (HlyA) induced cleavage of caspase-1 leading to the maturation of IL-1β, while inactive α-hemolysin (proHlyA) failed to do so in THP-1 derived macrophages. HlyA also promotes deubiquitination, oligomerization, and activation of the NLRP3 inflammasome, which was found to be dependent on potassium efflux. We have also observed the co-localization of NLRP3 within mitochondria during HlyA stimulations. Moreover, blocking of potassium efflux improved the mitochondrial health in addition to a decreased inflammatory response. Our study demonstrates that HlyA stimulation caused perturbance in potassium homeostasis, which led to the mitochondrial dysfunction followed by an acute inflammatory response, resulting in cell death. However, the repletion of intracellular potassium stores could avoid HlyA induced macrophage cell death. The findings of this study will help to understand the mechanism of α-hemolysin induced inflammatory response and cell death.
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Affiliation(s)
- Vivek Verma
- Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi (North Campus), Delhi, 110007, India
| | - Parveen Kumar
- Department of Urology, University of Alabama At Birmingham, Hugh Kaul Genetics Building, Birmingham, AL, USA
| | - Surbhi Gupta
- Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi (North Campus), Delhi, 110007, India
| | - Sonal Yadav
- Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi (North Campus), Delhi, 110007, India
| | - Rakesh Singh Dhanda
- Stem Cell Laboratory, Longboat Explorers AB, SMiLE Incubator, Scheelevägen 2, Lund, Sweden
| | - Henrik Thorlacius
- Department of Clinical Sciences, Section of Surgery, Malmö, Skåne University Hospital, Lund University, Malmö, Sweden
| | - Manisha Yadav
- Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi (North Campus), Delhi, 110007, India.
- Department of Clinical Sciences, Section of Surgery, Malmö, Skåne University Hospital, Lund University, Malmö, Sweden.
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190
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Zhao N, Li CC, Di B, Xu LL. Recent advances in the NEK7-licensed NLRP3 inflammasome activation: Mechanisms, role in diseases and related inhibitors. J Autoimmun 2020; 113:102515. [PMID: 32703754 DOI: 10.1016/j.jaut.2020.102515] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/30/2020] [Accepted: 07/07/2020] [Indexed: 12/21/2022]
Abstract
The nucleotide-binding oligomerization domain (NOD)-like receptor containing pyrin domain 3 (NLRP3) inflammasome is a high-molecular-weight complex mediated by the activation of pattern-recognition receptors (PRRs) seed in innate immunity. Once NLRP3 is activated, the following recruitment of the adapter apoptosis-associated speck-like protein containing a caspase recruitment domain (CARD) (ASC) and procaspase-1 would be initiated. Cleavage of procaspase-1 into active caspase-1 then leads to the maturation of the precursor forms of interleukin (IL)-1β and IL-18 into biologically active IL-1β and IL-18. The activation of NLRP3 inflammasome is thought to be tightly associated with a regulator never in mitosis A (NIMA)-related kinase 7 (NEK7), apart from other signaling events such as K+ efflux and reactive oxygen species (ROS). Plus, the NLRP3 inflammasome has been linked to various metabolic disorders, chronic inflammation and other diseases. In this review, we firstly describe the cellular/molecular mechanisms of the NEK7-licensed NLRP3 inflammasome activation. Then we detail the potential inhibitors that can selectively and effectively modulate either the NEK7-NLRP3 complex itself or the related molecular/cellular events. Finally, we describe some inhibitors as promising therapeutic strategies for diverse diseases driven by NLRP3 inflammasome.
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Affiliation(s)
- Ni Zhao
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, China
| | - Cui-Cui Li
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, China
| | - Bin Di
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, China.
| | - Li-Li Xu
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing, 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, China.
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191
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Cbl Negatively Regulates NLRP3 Inflammasome Activation through GLUT1-Dependent Glycolysis Inhibition. Int J Mol Sci 2020; 21:ijms21145104. [PMID: 32707731 PMCID: PMC7404051 DOI: 10.3390/ijms21145104] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/11/2020] [Accepted: 07/17/2020] [Indexed: 01/14/2023] Open
Abstract
Activation of the nod-like receptor 3 (NLRP3) inflammasomes is crucial for immune defense, but improper and excessive activation causes inflammatory diseases. We previously reported that Cbl plays a pivotal role in suppressing NLRP3 inflammasome activation by inhibiting Pyk2-mediated apoptosis-associated speck-like protein containing a CARD (ASC) oligomerization. Here, we showed that Cbl dampened NLRP3 inflammasome activation by inhibiting glycolysis, as demonstrated with Cbl knockout cells and treatment with the Cbl inhibitor hydrocotarnine. We revealed that the inhibition of Cbl promoted caspase-1 cleavage and interleukin (IL)-1β secretion through a glycolysis-dependent mechanism. Inhibiting Cbl increased cellular glucose uptake, glycolytic capacity, and mitochondrial oxidative phosphorylation capacity. Upon NLRP3 inflammasome activation, inhibiting Cbl increased glycolysis-dependent activation of mitochondrial respiration and increased the production of reactive oxygen species, which contributes to NLRP3 inflammasome activation and IL-1β secretion. Mechanistically, inhibiting Cbl increased surface expression of glucose transporter 1 (GLUT1) protein through post-transcriptional regulation, which increased cellular glucose uptake and consequently raised glycolytic capacity, and in turn enhanced NLRP3 inflammasome activation. Together, our findings provide new insights into the role of Cbl in NLRP3 inflammasome regulation through GLUT1 downregulation. We also show that a novel Cbl inhibitor, hydrocortanine, increased NLRP3 inflammasome activity via its effect on glycolysis.
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192
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Söderbom G, Zeng BY. The NLRP3 inflammasome as a bridge between neuro-inflammation in metabolic and neurodegenerative diseases. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2020; 154:345-391. [PMID: 32739011 DOI: 10.1016/bs.irn.2020.03.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Evidence increasingly suggests that type 2 diabetes mellitus (T2DM) is a risk factor for neurodegenerative diseases (NDDs), such as Alzheimer's disease (AD) and Parkinson's disease (PD). These diseases share many pathological processes, including oxidative stress, local inflammation/neuroinflammation and chronic, low-grade (systemic) inflammation, which are exacerbated by aging, a common risk factor for T2DM and NDDs. Here, we focus on the link between chronic inflammation driven by peripheral metabolic disease and how this may impact neurodegeneration in AD and PD. We review the relationship between these common pathological processes in AD and PD from the perspective of the "pro-inflammatory" signaling of the nucleotide-binding oligomerization domain (NOD)-, leucine-rich repeat- (LRR)-, and pyrin domain-containing protein 3 (NLRP3) inflammasome complex. Since the need for effective disease-modifying therapies in T2DM, AD and PD is significant, the relationship between these diseases is important as a positive clinical impact on one may benefit the others. We briefly consider how novel strategies may target neuro-inflammation and provide potential therapies for AD and PD.
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Affiliation(s)
| | - Bai-Yun Zeng
- Institute of Pharmaceutical Science, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
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193
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Noguchi M, Hirata N, Tanaka T, Suizu F, Nakajima H, Chiorini JA. Autophagy as a modulator of cell death machinery. Cell Death Dis 2020; 11:517. [PMID: 32641772 PMCID: PMC7343815 DOI: 10.1038/s41419-020-2724-5] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 05/08/2020] [Accepted: 05/11/2020] [Indexed: 01/07/2023]
Abstract
The balance between cell death and survival is a critical parameter in the regulation of cells and the maintenance of homeostasis in vivo. Three major mechanisms for cell death have been identified in mammalian cells: apoptosis (type I), autophagic cell death (type II), and necrosis (type III). These three mechanisms have been suggested to engage in cross talk with each other. Among them, autophagy was originally characterized as a cell survival mechanism for amino acid recycling during starvation. Whether autophagy functions primarily in cell survival or cell death is a critical question yet to be answered. Here, we present a comprehensive review of the cell death-related events that take place during autophagy and their underlying mechanisms in cancer and autoimmune disease development.
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Affiliation(s)
- Masayuki Noguchi
- grid.39158.360000 0001 2173 7691Division of Cancer Biology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
| | - Noriyuki Hirata
- grid.39158.360000 0001 2173 7691Division of Cancer Biology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
| | - Tsutomu Tanaka
- grid.94365.3d0000 0001 2297 5165National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD USA
| | - Futoshi Suizu
- grid.39158.360000 0001 2173 7691Division of Cancer Biology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroshi Nakajima
- grid.136304.30000 0004 0370 1101Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - John A. Chiorini
- grid.94365.3d0000 0001 2297 5165National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD USA
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194
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Kim NH, Kim HK, Lee JH, Jo SI, Won HM, Lee GS, Lee HS, Nam KW, Kim WJ, Han MD. Juglone Suppresses LPS-induced Inflammatory Responses and NLRP3 Activation in Macrophages. Molecules 2020; 25:molecules25133104. [PMID: 32646056 PMCID: PMC7412499 DOI: 10.3390/molecules25133104] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/02/2020] [Accepted: 07/05/2020] [Indexed: 02/07/2023] Open
Abstract
The NLRP3 (NACHT, LRR and PYD domains-containing protein 3) inflammasome has been implicated in a variety of diseases, including atherosclerosis, neurodegenerative diseases, and infectious diseases. Thus, inhibitors of NLRP3 inflammasome have emerged as promising approaches to treat inflammation-related diseases. The aim of this study was to explore the effects of juglone (5-hydroxyl-1,4-naphthoquinone) on NLRP3 inflammasome activation. The inhibitory effects of juglone on nitric oxide (NO) production were assessed in lipopolysaccharide (LPS)-stimulated J774.1 cells by Griess assay, while its effects on reactive oxygen species (ROS) and NLRP3 ATPase activity were assessed. The expression levels of NLRP3, caspase-1, and pro-inflammatory cytokines (IL-1β, IL-18) and cytotoxicity of juglone in J774.1 cells were also determined. Juglone was non-toxic in J774.1 cells when used at 10 μM (p < 0.01). Juglone treatment inhibited the production of ROS and NO. The levels of NLRP3 and cleaved caspase-1, as well as the secretion of IL-1β and IL-18, were decreased by treatment with juglone in a concentration-dependent manner. Juglone also inhibited the ATPase activities of NLRP3 in LPS/ATP-stimulated J774.1 macrophages. Our results suggested that juglone could inhibit inflammatory cytokine production and NLRP3 inflammasome activation in macrophages, and should be considered as a therapeutic strategy for inflammation-related diseases.
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195
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Marleaux M, Anand K, Latz E, Geyer M. Crystal structure of the human NLRP9 pyrin domain suggests a distinct mode of inflammasome assembly. FEBS Lett 2020; 594:2383-2395. [PMID: 32542665 DOI: 10.1002/1873-3468.13865] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/17/2020] [Accepted: 06/01/2020] [Indexed: 12/18/2022]
Abstract
Inflammasomes are cytosolic multimeric signaling complexes of the innate immune system that induce activation of caspases. The NOD-like receptor NLRP9 recruits the adaptor protein ASC to form an ASC-dependent inflammasome to limit rotaviral replication in intestinal epithelial cells, but only little is known about the molecular mechanisms regulating and driving its assembly. Here, we present the crystal structure of the human NLRP9 pyrin domain (PYD). We show that NLRP9PYD is not able to self-polymerize nor to nucleate ASC specks in HEK293T cells. A comparison with filament-forming PYDs revealed that NLRP9PYD adopts a conformation compatible with filament formation, but several charge inversions of interfacing residues might cause repulsive effects that prohibit self-oligomerization. These results propose that inflammasome assembly of NLRP9 might differ largely from what we know of other inflammasomes.
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Affiliation(s)
- Michael Marleaux
- Institute of Structural Biology, University of Bonn, Bonn, Germany
| | - Kanchan Anand
- Institute of Structural Biology, University of Bonn, Bonn, Germany
| | - Eicke Latz
- Institute of Innate Immunity, University of Bonn, Bonn, Germany
| | - Matthias Geyer
- Institute of Structural Biology, University of Bonn, Bonn, Germany
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196
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Tian C, Han X, He L, Tang F, Huang R, Lin Z, Li S, Deng S, Xu J, Huang H, Zhao H, Li Z. Transient receptor potential ankyrin 1 contributes to the ATP-elicited oxidative stress and inflammation in THP-1-derived macrophage. Mol Cell Biochem 2020; 473:179-192. [PMID: 32627113 DOI: 10.1007/s11010-020-03818-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/27/2020] [Indexed: 12/28/2022]
Abstract
P2X7 receptor (P2X7R) is an ATP-gated non-selective cation channel which mediates ATP-induced inflammation in macrophages. Transient receptor potential (TRP) receptors are nociceptors in cellular membrane which can perceive the stimuli of environmental irritant. The interaction between TRP channels and P2X7R has been found while the details about inflammation are still unclear. In this study, we suggested that transient receptor potential ankyrin 1 (TRPA1), a member of TRP superfamily, participates in ATP-induced oxidative stress and inflammation in human acute monocytic leukemia cell line (THP-1)-derived macrophage. The co-localization between TRPA1 and P2X7R was detected using immunofluorescence in THP-1-derived macrophage and transfected human embryonic kidney cell line (HEK293T). The mechanism by which ATP or 3'-O-(4-Benzoylbenzoyl)-ATP (BzATP) induces the activation of macrophages was verified by calcium imaging, mitochondrial reactive oxygen species (mtROS) detection, mitochondrial membrane potential (∆Ψm) measurement, flow cytometry, enzyme-linked immunosorbent assay (ELISA), western blotting, CCK-8 assay, and the lactate dehydrogenase (LDH) release cytotoxic assay. The BzATP and ATP induced calcium overload, mitochondria injury, interleukin-1β (IL-1β) secretion, and cytotoxicity can be inhibited by TRPA1 antagonists. These results indicated that TRPA1 can co-localize with P2X7R and mediate ATP-induced oxidative stress and inflammation. Therefore, the inhibition of TRPA1 may provide a potential therapy for ATP-elicited inflammatory diseases, including atherosclerosis.
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Affiliation(s)
- Chao Tian
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou JYK Biotechnology Company Limited, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Xiaobo Han
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Lang He
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Feng Tang
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou JYK Biotechnology Company Limited, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Rongqi Huang
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Zuoxian Lin
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Shuai Li
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Sihao Deng
- Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Junjie Xu
- Guangzhou JYK Biotechnology Company Limited, Guangzhou, Guangdong, China
| | - Hualin Huang
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Huifang Zhao
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China
| | - Zhiyuan Li
- Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China. .,Department of Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China. .,Guangzhou JYK Biotechnology Company Limited, Guangzhou, Guangdong, China. .,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, Guangdong, China. .,GZMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, Guangdong, China.
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197
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Claycombe-Larson KJ, Alvine T, Wu D, Kalupahana NS, Moustaid-Moussa N, Roemmich JN. Nutrients and Immunometabolism: Role of Macrophage NLRP3. J Nutr 2020; 150:1693-1704. [PMID: 32271912 DOI: 10.1093/jn/nxaa085] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/27/2020] [Accepted: 03/10/2020] [Indexed: 12/19/2022] Open
Abstract
Inflammation is largely mediated by immune cells responding to invading pathogens, whereas metabolism is oriented toward producing usable energy for vital cell functions. Immunometabolic alterations are considered key determinants of chronic inflammation, which leads to the development of chronic diseases. Studies have demonstrated that macrophages and the NOD-, LRR-, and pyrin domain-containing protein 3 (NLRP3) inflammasome are activated in key metabolic tissues to contribute to increased risk for type 2 diabetes mellitus, Alzheimer disease, and liver diseases. Thus, understanding the tissue-/cell-type-specific regulation of the NLRP3 inflammasome is crucial for developing intervention strategies. Currently, most of the nutrients and bioactive compounds tested to determine their inflammation-reducing effects are limited to animal models. Future studies need to address how dietary compounds regulate immune and metabolic cell reprograming in humans.
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Affiliation(s)
- Kate J Claycombe-Larson
- Grand Forks Human Nutrition Research Center, USDA Agricultural Research Service, Grand Forks, ND, USA
| | - Travis Alvine
- Grand Forks Human Nutrition Research Center, USDA Agricultural Research Service, Grand Forks, ND, USA
| | - Dayong Wu
- The Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | | | - Naima Moustaid-Moussa
- Nutritional Science Department and Obesity Research Institute, Texas Tech University, Lubbock, TX, USA
| | - James N Roemmich
- Grand Forks Human Nutrition Research Center, USDA Agricultural Research Service, Grand Forks, ND, USA
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198
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Weatherly LM, Shane HL, Friend SA, Lukomska E, Baur R, Anderson SE. Topical Application of the Antimicrobial Agent Triclosan Induces NLRP3 Inflammasome Activation and Mitochondrial Dysfunction. Toxicol Sci 2020; 176:147-161. [PMID: 32321163 PMCID: PMC7367438 DOI: 10.1093/toxsci/kfaa056] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
5-Chloro-2-(2,4-dichlorophenoxy)phenol (triclosan) is an antimicrobial chemical widely used in consumer household and clinical healthcare products. Human and animal studies have associated triclosan exposure with allergic disease. Mechanistic studies have identified triclosan as a mitochondrial uncoupler; recent studies suggest that mitochondria play an important role in immune cell function and are involved in activation of the NLRP3 inflammasome. In this study, early immunological effects were evaluated via NLRP3 activation following dermal triclosan application in a BALB/c murine model. These investigations revealed rapid caspase-1 activation and mature IL-1β secretion in the skin and draining lymph nodes (dLNs) after 1.5% and 3% triclosan exposure. Correspondingly, pro-Il-1b and S100a8 gene expression increased along with extracellular ATP in the skin. Peak gene expression of chemokines associated with caspase-1 activation occurred after 2 days of exposure in both skin tissue and dLNs. Phenotypic analysis showed an increase in neutrophils and macrophages in the dLN and myeloid and inflammatory monocytes in the skin tissue. Triclosan also caused mitochondrial dysfunction shown through effects on mitochondrial reactive oxygen species, mass, mitochondrial membrane potential, and mitochondrial morphology. These results indicate that following triclosan exposure, activation of the NLRP3 inflammasome occurs in both the skin tissue and dLNs, providing a possible mechanism for triclosan's effects on allergic disease and further support a connection between mitochondrial involvements in immunological responses.
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Affiliation(s)
- Lisa M. Weatherly
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505
| | - Hillary L. Shane
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505
| | - Sherri A. Friend
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505
| | - Ewa Lukomska
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505
| | - Rachel Baur
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505
| | - Stacey E. Anderson
- Allergy and Clinical Immunology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505
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199
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Han Q, Han L, Tie F, Wang Z, Ma C, Li J, Wang H, Li G. (20S)-Protopanaxadiol Ginsenosides Induced Cytotoxicity via Blockade of Autophagic Flux in HGC-27 Cells. Chem Biodivers 2020; 17:e2000187. [PMID: 32384197 DOI: 10.1002/cbdv.202000187] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022]
Abstract
(20S)-Protopanaxadiol ginsenosides Rg3, Rh2 and PPD have been demonstrated for their anticancer activity. However, the underlying mechanism of their antitumor activity remains unclear. In the present study, we investigated the role of these three ginsenosides on cell proliferation and death of human gastric cancer cells (HGC-27 cells). The sulforhodamine B (SRB) assay, Western blot analysis, fluorescence microscopy, confocal microscopy, high performance liquid chromatography (HPLC) analysis, flow cytometry, and transmission electron microscopy (TEM) were used to evaluate cell proliferation, apoptosis, and autophagy. The results showed that both Rh2 and PPD were more effective than Rg3 in inhibiting HGC-27 cell proliferation and inducing cytoplasmic vacuolation, while no significant changes in apoptosis were observed. Interestingly, cytoplasmic vacuolation and blockade of autophagy flux were observed after treatment with Rh2 and PPD. Rh2 obviously up-regulated the expression of the LC3II and p62. Furthermore, the increase in lysosomal pH and membrane rupture was observed in Rh2-treated and PPD-treated cells. When HGC-27 cells were pretreated with bafilomycin A1, a specific inhibitor of endosomal acidification, cellular vacuolization was increased, and the cell viability was significantly decreased, which indicated that Rh2-induced lysosome-damage accelerated cell death. Furthermore, data derived from mitochondrial analysis showed that excessive mitochondrial reactive oxygen species (ROS) and dysregulation of mitochondrial energy metabolism were caused by Rh2 and PPD treatment in HGC-27 cells. Taken together, these phenomena indicated that Rh2 and PPD inhibited HCG-27 cells proliferation by inducing mitochondria damage, dysfunction of lysosomes, and blockade of autophagy flux. The number of glycosyl groups at C-3 position could have an important effect on the cytotoxicity of Rg3, Rh2 and PPD.
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Affiliation(s)
- Qingqing Han
- Center for Mitochondria and Healthy Aging, College of Life Sciences, Yantai University, Yantai, 264005, P. R. China
| | - Lijuan Han
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, P. R. China
| | - Fangfang Tie
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810008, P. R. China
| | - Zhenhua Wang
- Center for Mitochondria and Healthy Aging, College of Life Sciences, Yantai University, Yantai, 264005, P. R. China
| | - Chengjun Ma
- Center for Mitochondria and Healthy Aging, College of Life Sciences, Yantai University, Yantai, 264005, P. R. China
| | - Ji Li
- Center for Mitochondria and Healthy Aging, College of Life Sciences, Yantai University, Yantai, 264005, P. R. China
| | - Honglun Wang
- Center for Mitochondria and Healthy Aging, College of Life Sciences, Yantai University, Yantai, 264005, P. R. China.,Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810008, P. R. China
| | - Gang Li
- Center for Mitochondria and Healthy Aging, College of Life Sciences, Yantai University, Yantai, 264005, P. R. China
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200
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Sebastian-Valverde M, Pasinetti GM. The NLRP3 Inflammasome as a Critical Actor in the Inflammaging Process. Cells 2020; 9:cells9061552. [PMID: 32604771 PMCID: PMC7348816 DOI: 10.3390/cells9061552] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/12/2020] [Accepted: 06/23/2020] [Indexed: 02/06/2023] Open
Abstract
As a consequence of the considerable increase in the human lifespan over the last century, we are experiencing the appearance and impact of new age-related diseases. The causal relationships between aging and an enhanced susceptibility of suffering from a broad spectrum of diseases need to be better understood. However, one specific shared feature seems to be of capital relevance for most of these conditions: the low-grade chronic inflammatory state inherently associated with aging, i.e., inflammaging. Here, we review the molecular and cellular mechanisms that link aging and inflammaging, focusing on the role of the innate immunity and more concretely on the nucleotide-binding oligomerization domain (NOD)-like receptor family pyrin domain containing 3 (NLRP3) inflammasome, as well as how the chronic activation of this inflammasome has a detrimental effect on different age-related disorders.
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Affiliation(s)
| | - Giulio M. Pasinetti
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA;
- James J. Peters Veterans Affairs Medical Center, Bronx, New York, NY 10468, USA
- Correspondence: ; Tel.: +1-212-241-1952
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