51
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Downton P, Sanna F, Maidstone R, Poolman TM, Hayter EA, Dickson SH, Ciccone NA, Early JO, Adamson A, Spiller DG, Simpkins DA, Baxter M, Fischer R, Rattray M, Loudon ASI, Gibbs JE, Bechtold DA, Ray DW. Chronic inflammatory arthritis drives systemic changes in circadian energy metabolism. Proc Natl Acad Sci U S A 2022; 119:e2112781119. [PMID: 35482925 PMCID: PMC9170023 DOI: 10.1073/pnas.2112781119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 03/01/2022] [Indexed: 11/22/2022] Open
Abstract
Chronic inflammation underpins many human diseases. Morbidity and mortality associated with chronic inflammation are often mediated through metabolic dysfunction. Inflammatory and metabolic processes vary through circadian time, suggesting an important temporal crosstalk between these systems. Using an established mouse model of rheumatoid arthritis, we show that chronic inflammatory arthritis results in rhythmic joint inflammation and drives major changes in muscle and liver energy metabolism and rhythmic gene expression. Transcriptional and phosphoproteomic analyses revealed alterations in lipid metabolism and mitochondrial function associated with increased EGFR-JAK-STAT3 signaling. Metabolomic analyses confirmed rhythmic metabolic rewiring with impaired β-oxidation and lipid handling and revealed a pronounced shunt toward sphingolipid and ceramide accumulation. The arthritis-related production of ceramides was most pronounced during the day, which is the time of peak inflammation and increased reliance on fatty acid oxidation. Thus, our data demonstrate that localized joint inflammation drives a time-of-day–dependent build-up of bioactive lipid species driven by rhythmic inflammation and altered EGFR-STAT signaling.
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Affiliation(s)
- Polly Downton
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Fabio Sanna
- National Institute for Health Research Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, OX3 9DU, United Kingdom
| | - Robert Maidstone
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
- National Institute for Health Research Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, OX3 9DU, United Kingdom
| | - Toryn M. Poolman
- National Institute for Health Research Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, OX3 9DU, United Kingdom
| | - Edward A. Hayter
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Suzanna H. Dickson
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Nick A. Ciccone
- National Institute for Health Research Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, OX3 9DU, United Kingdom
| | - James O. Early
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Antony Adamson
- Genome Editing Unit, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - David G. Spiller
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Devin A. Simpkins
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Matthew Baxter
- National Institute for Health Research Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, OX3 9DU, United Kingdom
| | - Roman Fischer
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, OX3 7FZ, United Kingdom
| | - Magnus Rattray
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Andrew S. I. Loudon
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - Julie E. Gibbs
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - David A. Bechtold
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT, United Kingdom
| | - David W. Ray
- National Institute for Health Research Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, OX3 9DU, United Kingdom
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, OX3 9DU, United Kingdom
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Oyama Y, Shuff SR, Burns N, Vohwinkel CU, Eckle T. Intense light-elicited alveolar type 2-specific circadian PER2 protects from bacterial lung injury via BPIFB1. Am J Physiol Lung Cell Mol Physiol 2022; 322:L647-L661. [PMID: 35272486 PMCID: PMC9037706 DOI: 10.1152/ajplung.00301.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Circadian amplitude enhancement has the potential to be organ protective but has not been studied in acute lung injury (ALI). Consistent light and dark cycles are crucial for the amplitude regulation of the circadian rhythm protein Period2 (PER2). Housing mice under intense instead of ambient light for 1 wk (light: dark cycle:14h:10h), we demonstrated a robust increase of pulmonary PER2 trough and peak levels, which is consistent with circadian amplitude enhancement. A search for the affected lung cell type suggested alveolar type 2 (ATII) cells as strong candidates for light induction of PER2. A head-to-head comparison of mice with cell-type-specific deletion of Per2 in ATII, endothelial, or myeloid cells uncovered a dramatic phenotype in mice with an ATII-specific deletion of Per2. During Pseudomonas aeruginosa-induced ALI, mice with Per2 deletion in ATII cells showed 0% survival, whereas 85% of control mice survived. Subsequent studies demonstrated that intense light therapy dampened lung inflammation or improved the alveolar barrier function during P. aeruginosa-induced ALI, which was abolished in mice with an ATII-specific deletion of Per2. A genome-wide mRNA array uncovered bactericidal/permeability-increasing fold-containing family B member 1 (BPIFB1) as a downstream target of intense light-elicited ATII-PER2 mediated lung protection. Using the flavonoid and PER2 amplitude enhancer nobiletin, we recapitulated the lung-protective and anti-inflammatory effects of light and BPIFB1, respectively. Together, our studies demonstrate that light-elicited amplitude enhancement of ATII-specific PER2 is a critical control point of inflammatory pathways during bacterial ALI.
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Affiliation(s)
- Yoshimasa Oyama
- 1Department of Anesthesiology, University of Colorado Denver School of Medicine, Aurora, Colorado,2Department of Anesthesiology and Intensive Care Medicine, Oita University Faculty of Medicine, Oita, Japan
| | - Sydney R. Shuff
- 1Department of Anesthesiology, University of Colorado Denver School of Medicine, Aurora, Colorado
| | - Nana Burns
- 3Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, Division of Pediatric Critical Care, Department of Medicine and Pediatrics, University of Colorado, Aurora, Colorado
| | - Christine U. Vohwinkel
- 3Developmental Lung Biology, Cardiovascular Pulmonary Research Laboratories, Division of Pediatric Critical Care, Department of Medicine and Pediatrics, University of Colorado, Aurora, Colorado
| | - Tobias Eckle
- 1Department of Anesthesiology, University of Colorado Denver School of Medicine, Aurora, Colorado,4Department of Cell and Developmental Biology, University of Colorado Denver School of Medicine, Aurora, Colorado
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53
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Giri A, Wang Q, Rahman I, Sundar IK. Circadian molecular clock disruption in chronic pulmonary diseases. Trends Mol Med 2022; 28:513-527. [DOI: 10.1016/j.molmed.2022.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 03/25/2022] [Accepted: 04/01/2022] [Indexed: 12/31/2022]
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Targeting Nuclear Receptors for T H17-Mediated Inflammation: REV-ERBerations of Circadian Rhythm and Metabolism. IMMUNOMETABOLISM 2022; 4:e220006. [PMID: 35475255 PMCID: PMC9038092 DOI: 10.20900/immunometab20220006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Since their discovery, a significant amount of progress has been made understanding T helper 17 (TH17) cells' roles in immune homeostasis and disease. Outside of classical cytokine signaling, environmental and cellular intrinsic factors, including metabolism, have proven to be critical for non-pathogenic vs pathogenic TH17 cell development, clearance of infections, and disease. The nuclear receptor RORγt has been identified as a key regulator of TH17-mediated inflammation. Nuclear receptors regulate a variety of physiological processes, ranging from reproduction to the circadian rhythm, immunity to metabolism. Outside of RORγt, the roles of other nuclear receptors in TH17-mediated immunity are not as well established. In this mini-review we describe recent studies that revealed a role for a different member of the nuclear receptor superfamily, REV-ERBα, in the regulation of TH17 cells and autoimmunity. We highlight similarities and differences between reports, potential roles beyond TH17-mediated cytokine regulation, unresolved questions in the field, as well as the translational potential of targeting REV-ERBα.
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55
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Gray KJ, Gibbs JE. Adaptive immunity, chronic inflammation and the clock. Semin Immunopathol 2022; 44:209-224. [PMID: 35233691 PMCID: PMC8901482 DOI: 10.1007/s00281-022-00919-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 01/28/2022] [Indexed: 12/17/2022]
Abstract
The adaptive arm of the immune system facilitates recognition of specific foreign pathogens and, via the action of T and B lymphocytes, induces a fine-tuned response to target the pathogen and develop immunological memory. The functionality of the adaptive immune system exhibits daily 24-h variation both in homeostatic processes (such as lymphocyte trafficking and development of T lymphocyte subsets) and in responses to challenge. Here, we discuss how the circadian clock exerts influence over the function of the adaptive immune system, considering the roles of cell intrinsic clockwork machinery and cell extrinsic rhythmic signals. Inappropriate or misguided actions of the adaptive immune system can lead to development of autoimmune diseases such as rheumatoid arthritis, ulcerative colitis and multiple sclerosis. Growing evidence indicates that disturbance of the circadian clock has negative impact on development and progression of these chronic inflammatory diseases and we examine current understanding of clock-immune interactions in the setting of these inflammatory conditions. A greater appreciation of circadian control of adaptive immunity will facilitate further understanding of mechanisms driving daily variation in disease states and drive improvements in the diagnosis and treatment of chronic inflammatory diseases.
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Affiliation(s)
- Kathryn J Gray
- Centre for Biological Timing, Faculty of Biology Medicine and Health, University of Manchester, Manchester, M13 9PT, UK
| | - Julie E Gibbs
- Centre for Biological Timing, Faculty of Biology Medicine and Health, University of Manchester, Manchester, M13 9PT, UK.
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56
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Shirato K, Sato S. Macrophage Meets the Circadian Clock: Implication of the Circadian Clock in the Role of Macrophages in Acute Lower Respiratory Tract Infection. Front Cell Infect Microbiol 2022; 12:826738. [PMID: 35281442 PMCID: PMC8904936 DOI: 10.3389/fcimb.2022.826738] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/01/2022] [Indexed: 12/13/2022] Open
Abstract
The circadian rhythm is a biological system that creates daily variations of physiology and behavior with a 24-h cycle, which is precisely controlled by the molecular circadian clock. The circadian clock dominates temporal activity of physiological homeostasis at the molecular level, including endocrine secretion, metabolic, immune response, coupled with extrinsic environmental cues (e.g., light/dark cycles) and behavioral cues (e.g., sleep/wake cycles and feeding/fasting cycles). The other side of the clock is that the misaligned circadian rhythm contributes to the onset of a variety of diseases, such as cancer, metabolic diseases, and cardiovascular diseases, the acceleration of aging, and the development of systemic inflammation. The role played by macrophages is a key mediator between circadian disruption and systemic inflammation. At the molecular level, macrophage functions are under the direct control of the circadian clock, and thus the circadian misalignment remodels the phenotype of macrophages toward a ‘killer’ mode. Remarkably, the inflammatory macrophages induce systemic and chronic inflammation, leading to the development of inflammatory diseases and the dampened immune defensive machinery against infectious diseases such as COVID-19. Here, we discuss how the circadian clock regulates macrophage immune functions and provide the potential risk of misaligned circadian rhythms against inflammatory and infectious diseases.
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Affiliation(s)
- Ken Shirato
- Department of Molecular Predictive Medicine and Sport Science, Kyorin University School of Medicine, Mitaka, Japan
| | - Shogo Sato
- Center for Biological Clocks Research, Department of Biology, Texas A&M University, College Station, TX, United States
- *Correspondence: Shogo Sato,
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57
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Evaluation of stable reference genes for qPCR normalization in circadian studies related to lung inflammation and injury in mouse model. Sci Rep 2022; 12:1764. [PMID: 35110670 PMCID: PMC8810972 DOI: 10.1038/s41598-022-05836-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 01/05/2022] [Indexed: 12/21/2022] Open
Abstract
Circadian rhythms have a profound effect on lung function and immune-inflammatory response in chronic airway diseases. Thus, understanding the molecular mechanisms of circadian gene expression of core clock-controlled genes (CCGs) may help better understand how it contributes to the physiology and pathology of lung diseases. Ongoing studies have been analyzing gene expression levels of CCGs in mouse lungs using quantitative real-time PCR (qRT-PCR). However, to date, there are no reports on the most stable reference gene in the mouse lung for circadian studies. Herein, we utilized an acute house dust mite (HDM)-sensitization mouse model to evaluate the stability of 10 reference genes commonly used for qRT-PCR normalization using 5 unique algorithms: GeNorm, NormFinder, BestKeeper, RefFinder and Qbase+. Rn18s was determined as the most stable reference gene across all samples evaluated, and Actb, the least stable reference gene. Furthermore, CircWave analysis showed no diurnal variation in the expression pattern for Rn18s but Actb showed strong diurnal changes in the lungs of both PBS (control) and HDM groups. We demonstrate systematically how using Actb as a housekeeping gene offsets the diurnal expression patterns of the CCGs and leads to statistically significant results which may not be the true reflection of the qRT-PCR analysis.
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58
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Huang S, Liu CH, Wang Z, Fu Z, Britton WR, Blomfield AK, Kamenecka TM, Dunaief JL, Solt LA, Chen J. REV-ERBα regulates age-related and oxidative stress-induced degeneration in retinal pigment epithelium via NRF2. Redox Biol 2022; 51:102261. [PMID: 35176707 PMCID: PMC8851379 DOI: 10.1016/j.redox.2022.102261] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/02/2022] [Accepted: 02/05/2022] [Indexed: 11/21/2022] Open
Abstract
Retinal pigment epithelium (RPE) dysfunction and atrophy occur in dry age-related macular degeneration (AMD), often leading to photoreceptor degeneration and vision loss. Accumulated oxidative stress during aging contributes to RPE dysfunction and degeneration. Here we show that the nuclear receptor REV-ERBα, a redox sensitive transcription factor, protects RPE from age-related degeneration and oxidative stress-induced damage. Genetic deficiency of REV-ERBα leads to accumulated oxidative stress, dysfunction and degeneration of RPE, and AMD-like ocular pathologies in aging mice. Loss of REV-ERBα exacerbates chemical-induced RPE damage, and pharmacological activation of REV-ERBα protects RPE from oxidative damage both in vivo and in vitro. REV-ERBα directly regulates transcription of nuclear factor erythroid 2-related factor 2 (NRF2) and its downstream antioxidant enzymes superoxide dismutase 1 (SOD1) and catalase to counter oxidative damage. Moreover, aged mice with RPE specific knockout of REV-ERBα also exhibit accumulated oxidative stress and fundus and RPE pathologies. Together, our results suggest that REV-ERBα is a novel intrinsic protector of the RPE against age-dependent oxidative stress and a new molecular target for developing potential therapies to treat age-related retinal degeneration.
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59
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Bryant AJ, Ebrahimi E, Nguyen A, Wolff CA, Gumz ML, Liu AC, Esser KA. A wrinkle in time: circadian biology in pulmonary vascular health and disease. Am J Physiol Lung Cell Mol Physiol 2022; 322:L84-L101. [PMID: 34850650 PMCID: PMC8759967 DOI: 10.1152/ajplung.00037.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
An often overlooked element of pulmonary vascular disease is time. Cellular responses to time, which are regulated directly by the core circadian clock, have only recently been elucidated. Despite an extensive collection of data regarding the role of rhythmic contribution to disease pathogenesis (such as systemic hypertension, coronary artery, and renal disease), the roles of key circadian transcription factors in pulmonary hypertension remain understudied. This is despite a large degree of overlap in the pulmonary hypertension and circadian rhythm fields, not only including shared signaling pathways, but also cell-specific effects of the core clock that are known to result in both protective and adverse lung vessel changes. Therefore, the goal of this review is to summarize the current dialogue regarding common pathways in circadian biology, with a specific emphasis on its implications in the progression of pulmonary hypertension. In this work, we emphasize specific proteins involved in the regulation of the core molecular clock while noting the circadian cell-specific changes relevant to vascular remodeling. Finally, we apply this knowledge to the optimization of medical therapy, with a focus on sleep hygiene and the role of chronopharmacology in patients with this disease. In dissecting the unique relationship between time and cellular biology, we aim to provide valuable insight into the practical implications of considering time as a therapeutic variable. Armed with this information, physicians will be positioned to more efficiently use the full four dimensions of patient care, resulting in improved morbidity and mortality of pulmonary hypertension patients.
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Affiliation(s)
- Andrew J. Bryant
- 1Department of Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Elnaz Ebrahimi
- 1Department of Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Amy Nguyen
- 1Department of Medicine, University of Florida College of Medicine, Gainesville, Florida
| | - Christopher A. Wolff
- 2Department of Physiology, University of Florida College of Medicine, Gainesville, Florida
| | - Michelle L. Gumz
- 2Department of Physiology, University of Florida College of Medicine, Gainesville, Florida
| | - Andrew C. Liu
- 2Department of Physiology, University of Florida College of Medicine, Gainesville, Florida
| | - Karyn A. Esser
- 2Department of Physiology, University of Florida College of Medicine, Gainesville, Florida
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60
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Carvalho Cabral P, Tekade K, Stegeman SK, Olivier M, Cermakian N. The involvement of host circadian clocks in the regulation of the immune response to parasitic infections in mammals. Parasite Immunol 2021; 44:e12903. [PMID: 34964129 DOI: 10.1111/pim.12903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 11/29/2022]
Abstract
Circadian rhythms are recurring variations of physiology with a period of ~24 hours, generated by circadian clocks located throughout the body. Studies have shown a circadian regulation of many aspects of immunity. Immune cells have intrinsic clock mechanisms, and innate and adaptive immune responses - such as leukocyte migration, magnitude of inflammation, cytokine production and cell differentiation - are under circadian control. This circadian regulation has consequences for infections including parasitic infections. In the context of Leishmania infection, the circadian clock within host immune cells modulates the magnitude of the infection and the inflammatory response triggered by the parasite. As for malaria, rhythms within the immune system were shown to impact the developmental cycles of Plasmodium parasites within red blood cells. Further, host circadian rhythms impact infections by multicellular parasites; for example, infection with helminth Trichuris muris shows different kinetics of worm expulsion depending on time of day of infection, a variation that depends on the dendritic cell clock. Although the research on the circadian control of immunity in the context of parasitic infections is in its infancy, the research reviewed here suggests a crucial involvement of host circadian rhythms in immunity on the development and progression of parasitic infections.
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Affiliation(s)
| | - Kimaya Tekade
- Douglas Research Centre, McGill University, Montreal, QC, H4H 1R3, Canada
| | - Sophia K Stegeman
- Douglas Research Centre, McGill University, Montreal, QC, H4H 1R3, Canada
| | - Martin Olivier
- Research Institute of the McGill University Health Center, McGill University, Montreal, QC, H4A 3J1, Canada
| | - Nicolas Cermakian
- Douglas Research Centre, McGill University, Montreal, QC, H4H 1R3, Canada
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61
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Holl HM, Armstrong C, Galantino-Homer H, Brooks SA. Transcriptome diversity and differential expression in supporting limb laminitis. Vet Immunol Immunopathol 2021; 243:110353. [PMID: 34839133 DOI: 10.1016/j.vetimm.2021.110353] [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: 09/08/2021] [Revised: 11/03/2021] [Accepted: 11/07/2021] [Indexed: 10/19/2022]
Abstract
Laminitis results in impaired tissue integrity and Inflammation of the epidermal and dermal lamellae connecting the hoof capsule to the underlying distal phalanx and causes loss-of-use, poor quality of life and euthanasia in horses. Historically, studies to better understand the etiology of laminitis by documenting changes in gene expression were hampered by the paucity of gene annotation specific to hoof tissues. Next-generation sequencing enables improvements to annotation by incorporating equine- and hoof-specific transcripts. Here we characterize the hoof lamellar tissue transcriptome of naturally occurring supporting limb laminitis (SLL) using archived lamellar tissue from Thoroughbred racehorses consisting of 13 SLL hospital cases and seven age-matched control horses. This was achieved using: 1) Applied transcriptome annotation by long-read sequencing to document transcript diversity and 2) short-read RNA sequencing to document changes in gene expression correlating to the developmental and acute stages of naturally occurring SLL. 1.99Gbp of long-read transcriptome sequencing deeply documented 5067 unique loci, while short read RNA-seq under very stringent quality filters described 66 differentially expressed loci. Functional analysis of these loci revealed alterations in cell replication and growth, stress response and leukocyte recruitment and activation pathways. Differential expression of the Ezrin and TIMP3 genes suggests they may have utility as biomarkers for laminitis disease, while NR1D1 and genes relevant to the inflammasome are promising targets for novel pharmacological treatments.
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Affiliation(s)
- Heather M Holl
- Department of Animal Sciences, UF Genetics Institute, University of Florida, Gainesville, FL, United States
| | - Caitlin Armstrong
- Department of Clinical Studies/New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, PA, United States
| | - Hannah Galantino-Homer
- Department of Clinical Studies/New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, PA, United States
| | - Samantha A Brooks
- Department of Animal Sciences, UF Genetics Institute, University of Florida, Gainesville, FL, United States.
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62
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Gao L, Wang K, Cheng M, Zeng Z, Wang T, Wen F, Chen J. Circadian clock dysfunction of epithelial cells in pulmonary diseases. Int J Biochem Cell Biol 2021; 141:106110. [PMID: 34699979 DOI: 10.1016/j.biocel.2021.106110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/17/2021] [Accepted: 10/21/2021] [Indexed: 02/05/2023]
Abstract
Highly-differentiated pulmonary epithelial cells are essential for maintaining lung homeostasis by exerting various physiological functions, which are regulated by circadian clock consisted of an autoregulatory feedback loop of clock genes, including Brain-Muscle Aryl-hydrocarbon Receptor Nuclear Translocator-Like 1 (BMAL1) and Nuclear Heme Receptor Reverse Erythroblastosis Virus α (REV-ERB-α). The circadian clock dysfunction of epithelial cells has been increasingly associated with the pulmonary diseases: BMAL1 and REV-ERB-α regulates inflammatory response of club cells induced by lipopolysaccharide and cigarette smoke (CS) respectively; the clock disfunction in alveolar epithelial type2 cells (AEC-II) has been implicated in CS-induced airway inflammation and early-life hyperoxia-related susceptibility to influenza infection; the ciliary beat frequency of ciliated cells also shows circadian rhythms. Here, we review the current knowledge on the circadian regulation of different epithelial-cell subtypes, attempting to provide insights into how clock dysfunction contributes to pulmonary diseases, and explore possible pharmacological therapies and future directions for fundamental studies.
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Affiliation(s)
- Lijuan Gao
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy, and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China
| | - Ke Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy, and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China
| | - Mengxin Cheng
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy, and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zijian Zeng
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy, and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China
| | - Tao Wang
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy, and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China
| | - Fuqiang Wen
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy, and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China.
| | - Jun Chen
- Division of Pulmonary Diseases, State Key Laboratory of Biotherapy, and Department of Respiratory and Critical Care Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, Sichuan 610041, China.
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63
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Hu Y, He T, Zhu J, Wang X, Tong J, Li Z, Dong J. The Link between Circadian Clock Genes and Autophagy in Chronic Obstructive Pulmonary Disease. Mediators Inflamm 2021; 2021:2689600. [PMID: 34733115 PMCID: PMC8560276 DOI: 10.1155/2021/2689600] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 10/08/2021] [Indexed: 11/29/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD), a progressive respiratory disease, is characterized by the alveolar epithelium injury and persistent airway inflammation. It is documented that oscillation and dysregulated expression of circadian clock genes, like Bmal1, Per1, and Per2, involved in COPD pathogenies, including chronic inflammation and imbalanced autophagy level, and targeting the associations of circadian rhythm and autophagy is promising strategies in the management and treatment of COPD. Herein, we reviewed the mechanisms of the circadian clock and the unbalance of the autophagic level in COPD, as well as the link between the two, so as to provide further theoretical bases for the study on the pathogenesis of COPD.
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Affiliation(s)
- Yuedi Hu
- College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, No. 1, Qianjiang Road, Hefei City, Anhui Province, China
| | - Tiantian He
- College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, No. 1, Qianjiang Road, Hefei City, Anhui Province, China
| | - Jie Zhu
- College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, No. 1, Qianjiang Road, Hefei City, Anhui Province, China
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
- Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei City, Anhui Province, China
| | - Xiaole Wang
- Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei City, Anhui Province, China
| | - Jiabing Tong
- Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei City, Anhui Province, China
- Department of Respiratory Medicine, First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Meishan Road, Hefei City, Anhui Province, China
| | - Zegeng Li
- Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei City, Anhui Province, China
- Department of Respiratory Medicine, First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Meishan Road, Hefei City, Anhui Province, China
| | - Jingcheng Dong
- Institutes of Integrative Medicine, Fudan University, Shanghai, China
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Zhuang X, Tsukuda S, Wrensch F, Wing PA, Schilling M, Harris JM, Borrmann H, Morgan SB, Cane JL, Mailly L, Thakur N, Conceicao C, Sanghani H, Heydmann L, Bach C, Ashton A, Walsh S, Tan TK, Schimanski L, Huang KYA, Schuster C, Watashi K, Hinks TS, Jagannath A, Vausdevan SR, Bailey D, Baumert TF, McKeating JA. The circadian clock component BMAL1 regulates SARS-CoV-2 entry and replication in lung epithelial cells. iScience 2021; 24:103144. [PMID: 34545347 PMCID: PMC8443536 DOI: 10.1016/j.isci.2021.103144] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 09/11/2021] [Accepted: 09/13/2021] [Indexed: 12/15/2022] Open
Abstract
The coronavirus disease 2019 pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coronavirus, is a global health issue with unprecedented challenges for public health. SARS-CoV-2 primarily infects cells of the respiratory tract via spike glycoprotein binding to angiotensin-converting enzyme (ACE2). Circadian rhythms coordinate an organism's response to its environment and can regulate host susceptibility to virus infection. We demonstrate that silencing the circadian regulator Bmal1 or treating lung epithelial cells with the REV-ERB agonist SR9009 reduces ACE2 expression and inhibits SARS-CoV-2 entry and replication. Importantly, treating infected cells with SR9009 limits SARS-CoV-2 replication and secretion of infectious particles, showing that post-entry steps in the viral life cycle are influenced by the circadian system. Transcriptome analysis revealed that Bmal1 silencing induced interferon-stimulated gene transcripts in Calu-3 lung epithelial cells, providing a mechanism for the circadian pathway to limit SARS-CoV-2 infection. Our study highlights alternative approaches to understand and improve therapeutic targeting of SARS-CoV-2.
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Affiliation(s)
- Xiaodong Zhuang
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Senko Tsukuda
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Florian Wrensch
- Université de Strasbourg, Strasbourg, France and INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
| | - Peter A.C. Wing
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute (COI), University of Oxford, Oxford, UK
| | - Mirjam Schilling
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - James M. Harris
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Helene Borrmann
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Sophie B. Morgan
- Respiratory Medicine Unit and National Institute for Health Research Oxford Biomedical Research Centre, Nuffield Department of Medicine, Experimental Medicine, University of Oxford, UK
| | - Jennifer L. Cane
- Respiratory Medicine Unit and National Institute for Health Research Oxford Biomedical Research Centre, Nuffield Department of Medicine, Experimental Medicine, University of Oxford, UK
| | - Laurent Mailly
- Université de Strasbourg, Strasbourg, France and INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
| | - Nazia Thakur
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, UK
| | - Carina Conceicao
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, UK
| | - Harshmeena Sanghani
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Laura Heydmann
- Université de Strasbourg, Strasbourg, France and INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
| | - Charlotte Bach
- Université de Strasbourg, Strasbourg, France and INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
| | - Anna Ashton
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Steven Walsh
- Department of Pharmacology, University of Oxford, Oxford, UK
| | - Tiong Kit Tan
- MRC Human Immunology Unit, MRC Weatherall Institute, John Radcliffe Hospital, Oxford 17 OX3 9DS, UK
| | - Lisa Schimanski
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute (COI), University of Oxford, Oxford, UK
- MRC Human Immunology Unit, MRC Weatherall Institute, John Radcliffe Hospital, Oxford 17 OX3 9DS, UK
| | - Kuan-Ying A. Huang
- Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University and Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Catherine Schuster
- Université de Strasbourg, Strasbourg, France and INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
| | - Koichi Watashi
- Department of Virology II, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
- Department of Applied Biological Science, Tokyo University of Science, Noda 278-8510, Japan
| | - Timothy S.C. Hinks
- Respiratory Medicine Unit and National Institute for Health Research Oxford Biomedical Research Centre, Nuffield Department of Medicine, Experimental Medicine, University of Oxford, UK
| | - Aarti Jagannath
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | | | - Dalan Bailey
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, UK
| | - Thomas F. Baumert
- Université de Strasbourg, Strasbourg, France and INSERM, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
- Pole Hépato-digestif, IHU, Hopitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jane A. McKeating
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Chinese Academy of Medical Sciences (CAMS) Oxford Institute (COI), University of Oxford, Oxford, UK
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65
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Ma D, Li X, Wang Y, Cai L, Wang Y. Excessive fat expenditure in cachexia is associated with dysregulated circadian rhythm: a review. Nutr Metab (Lond) 2021; 18:89. [PMID: 34627306 PMCID: PMC8502262 DOI: 10.1186/s12986-021-00616-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 09/20/2021] [Indexed: 01/06/2023] Open
Abstract
Cachexia is a progressive metabolic disorder characterized by the excessive depletion of adipose tissue. This hypermetabolic condition has catastrophic impacts on the survival and quality of life for patients suffering from critical illness. However, efficient therapies to prevent adipose expenditure have not been discovered. It has been established that the circadian clock plays an important role in modulating fat metabolic processes. Recently, an increasing number of studies had provided evidence showing that disrupted circadian rhythm leads to insulin resistance and obesity; however, studies analyzing the relationship between circadian misalignment and adipose tissue expenditure in cachexia are scarce. In the present review, we cover the involvement of the circadian clocks in the regulation of adipogenesis, lipid metabolism and thermogenesis as well as inflammation in white and brown adipose tissue. According to the present review, we conclude that circadian clock disruption is associated with lipid metabolism imbalance and elevated adipose tissue inflammation. Moreover, under cachexia conditions, lipid synthesis and storage processes lost rhythm and decreased, while lipolysis and thermogenesis activities remained high for 24 h. Therefore, disordered circadian clock may be responsible for fat expenditure in cachexia by adversely influencing lipid synthesis/ storage/lipolysis/utilization. Further study needs to be performed to explore the direct interaction between circadian clock and fat expenditure in cachexia, it will likely provide potential efficient drugs for the treatment of fat expenditure in cachexia.
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Affiliation(s)
- Dufang Ma
- Department of Cardiology, Shandong University of Traditional Chinese Medicine Affiliated Hospital, Jinan, 250014, Shandong, China
| | - Xiao Li
- Department of Cardiology, Shandong University of Traditional Chinese Medicine Affiliated Hospital, Jinan, 250014, Shandong, China
| | - Yongcheng Wang
- Department of Cardiology, Shandong University of Traditional Chinese Medicine Affiliated Hospital, Jinan, 250014, Shandong, China
| | - Lu Cai
- Department of Cardiology, Shandong University of Traditional Chinese Medicine Affiliated Hospital, Jinan, 250014, Shandong, China
| | - Yong Wang
- Department of Cardiology, Shandong University of Traditional Chinese Medicine Affiliated Hospital, Jinan, 250014, Shandong, China.
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66
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Wang XL, Li L. Circadian Clock Regulates Inflammation and the Development of Neurodegeneration. Front Cell Infect Microbiol 2021; 11:696554. [PMID: 34595127 PMCID: PMC8476957 DOI: 10.3389/fcimb.2021.696554] [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: 04/19/2021] [Accepted: 08/18/2021] [Indexed: 12/15/2022] Open
Abstract
The circadian clock regulates numerous key physiological processes and maintains cellular, tissue, and systemic homeostasis. Disruption of circadian clock machinery influences key activities involved in immune response and brain function. Moreover, Immune activation has been closely linked to neurodegeneration. Here, we review the molecular clock machinery and the diurnal variation of immune activity. We summarize the circadian control of immunity in both central and peripheral immune cells, as well as the circadian regulation of brain cells that are implicated in neurodegeneration. We explore the important role of systemic inflammation on neurodegeneration. The circadian clock modulates cellular metabolism, which could be a mechanism underlying circadian control. We also discuss the circadian interventions implicated in inflammation and neurodegeneration. Targeting circadian clocks could be a potential strategy for the prevention and treatment of inflammation and neurodegenerative diseases.
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Affiliation(s)
- Xiao-Lan Wang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lianjian Li
- Department of Surgery, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China.,Hubei Province Academy of Traditional Chinese Medicine, Wuhan, China
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67
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Kitchen GB, Hopwood T, Gali Ramamoorthy T, Downton P, Begley N, Hussell T, Dockrell DH, Gibbs JE, Ray DW, Loudon ASI. The histone methyltransferase Ezh2 restrains macrophage inflammatory responses. FASEB J 2021; 35:e21843. [PMID: 34464475 PMCID: PMC8573545 DOI: 10.1096/fj.202100044rrr] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 07/06/2021] [Accepted: 07/23/2021] [Indexed: 01/02/2023]
Abstract
Robust inflammatory responses are critical to survival following respiratory infection, with current attention focused on the clinical consequences of the Coronavirus pandemic. Epigenetic factors are increasingly recognized as important determinants of immune responses, and EZH2 is a prominent target due to the availability of highly specific and efficacious antagonists. However, very little is known about the role of EZH2 in the myeloid lineage. Here, we show EZH2 acts in macrophages to limit inflammatory responses to activation, and in neutrophils for chemotaxis. Selective genetic deletion in macrophages results in a remarkable gain in protection from infection with the prevalent lung pathogen, pneumococcus. In contrast, neutrophils lacking EZH2 showed impaired mobility in response to chemotactic signals, and resulted in increased susceptibility to pneumococcus. In summary, EZH2 shows complex, and divergent roles in different myeloid lineages, likely contributing to the earlier conflicting reports. Compounds targeting EZH2 are likely to impair mucosal immunity; however, they may prove useful for conditions driven by pulmonary neutrophil influx, such as adult respiratory distress syndrome.
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Affiliation(s)
- Gareth B. Kitchen
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
- Manchester University NHS Foundation Trust, Manchester Academic Health Science CentreManchesterUK
| | - Thomas Hopwood
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Thanuja Gali Ramamoorthy
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Polly Downton
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Nicola Begley
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Tracy Hussell
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - David H. Dockrell
- Department of Infection Medicine and MRC Centre for Inflammation ResearchUniversity of EdinburghEdinburghUK
| | - Julie E. Gibbs
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - David W. Ray
- NIHR Oxford Biomedical Research Centre, John Radcliffe HospitalOxfordUK
- Oxford Centre for Diabetes, Endocrinology and MetabolismUniversity of OxfordOxfordUK
| | - Andrew S. I. Loudon
- Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
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68
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Hong H, Cheung YM, Cao X, Wu Y, Li C, Tian XY. REV-ERBα agonist SR9009 suppresses IL-1β production in macrophages through BMAL1-dependent inhibition of inflammasome. Biochem Pharmacol 2021; 192:114701. [PMID: 34324866 DOI: 10.1016/j.bcp.2021.114701] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 12/24/2022]
Abstract
The circadian clock plays an important role in adapting organisms to the daily light/dark cycling environment. Recent research findings reveal the involvement of the circadian clock not only in physiological functions but also in regulating inflammatory responses under pathological situations. Previous studies showed that the time-of-day variance of leucocyte circulation and pro-inflammatory cytokines secretion could be directly regulated by the clock-related proteins, including BMAL1 and REV-ERBα in a 24-hour oscillation pattern. To investigate the molecular mechanism behind the regulation of inflammation by the core clock components, we focus on the inflammatory responses in macrophages. Using bone marrow-derived macrophages from wild type and myeloid selective BMAL1-knockout mice, we found that the production of inflammatory cytokines, particularly IL-1β, was dependent on the timing of the lipopolysaccharide (LPS) stimulation in macrophages. Pharmacological activation of REV-ERBα with SR9009 significantly suppressed the LPS-induced inflammation in vitro and in vivo. Particularly, the effect of SR9009 on inhibiting NLRP3-mediated IL-1β and IL-18 production in macrophages was dependent on BMAL1 expression. Further analysis of the metabolic activity in LPS-treated mice showed that knockout of BMAL1 in macrophages exacerbated the hypometabolic state and delayed the recovery from LPS-induced endotoxemia even in the presence of SR9009. These results demonstrated an anti-inflammatory role of REV-ERBα in endotoxin-induced inflammation, during which the secretion of IL-1β through the NLRP3 inflammasome pathway inhibited by SR9009 was regulated by BMAL1.
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Affiliation(s)
- Huiling Hong
- School of Biomedical Sciences, CUHK Shenzhen Research Institute, Heart and Vascular Institute, Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Yiu Ming Cheung
- School of Life Sciences, Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Xiaoyun Cao
- School of Biomedical Sciences, CUHK Shenzhen Research Institute, Heart and Vascular Institute, Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Yalan Wu
- School of Biomedical Sciences, CUHK Shenzhen Research Institute, Heart and Vascular Institute, Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Chenyang Li
- Department of Pharmacy, School of Medicine, Health Science Center, Shenzhen University, Shenzhen, Guangdong, China
| | - Xiao Yu Tian
- School of Biomedical Sciences, CUHK Shenzhen Research Institute, Heart and Vascular Institute, Chinese University of Hong Kong, Hong Kong Special Administrative Region.
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69
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Palomino-Segura M, Hidalgo A. Circadian immune circuits. J Exp Med 2021; 218:211639. [PMID: 33372990 PMCID: PMC7774593 DOI: 10.1084/jem.20200798] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/30/2022] Open
Abstract
Immune responses are gated to protect the host against specific antigens and microbes, a task that is achieved through antigen- and pattern-specific receptors. Less appreciated is that in order to optimize responses and to avoid collateral damage to the host, immune responses must be additionally gated in intensity and time. An evolutionary solution to this challenge is provided by the circadian clock, an ancient time-keeping mechanism that anticipates environmental changes and represents a fundamental property of immunity. Immune responses, however, are not exclusive to immune cells and demand the coordinated action of nonhematopoietic cells interspersed within the architecture of tissues. Here, we review the circadian features of innate immunity as they encompass effector immune cells as well as structural cells that orchestrate their responses in space and time. We finally propose models in which the central clock, structural elements, and immune cells establish multidirectional circadian circuits that may shape the efficacy and strength of immune responses and other physiological processes.
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Affiliation(s)
- Miguel Palomino-Segura
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Andrés Hidalgo
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
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70
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Nuclear Receptors and Clock Components in Cardiovascular Diseases. Int J Mol Sci 2021; 22:ijms22189721. [PMID: 34575881 PMCID: PMC8468608 DOI: 10.3390/ijms22189721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 12/21/2022] Open
Abstract
Cardiovascular diseases (CVD) are still the first cause of death worldwide. Their main origin is the development of atherosclerotic plaque, which consists in the accumulation of lipids and inflammatory leucocytes within the vascular wall of large vessels. Beyond dyslipidemia, diabetes, obesity, hypertension and smoking, the alteration of circadian rhythms, in shift workers for instance, has recently been recognized as an additional risk factor. Accordingly, targeting a pro-atherogenic pathway at the right time window, namely chronotherapy, has proven its efficiency in reducing plaque progression without affecting healthy tissues in mice, thus providing the rationale of such an approach to treat CVD and to reduce drug side effects. Nuclear receptors are transcriptional factors involved in the control of many physiological processes. Among them, Rev-erbs and RORs control metabolic homeostasis, inflammatory processes and the biological clock. In this review, we discuss the opportunity to dampen atherosclerosis progression by targeting such ligand-activated core clock components in a (chrono-)therapeutic approach in order to treat CVD.
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71
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Potus F, Frump AL, Umar S, R. Vanderpool R, Al Ghouleh I, Lai YC. Recent advancements in pulmonary arterial hypertension and right heart failure research: overview of selected abstracts from ATS2020 and emerging COVID-19 research. Pulm Circ 2021; 11:20458940211037274. [PMID: 34434543 PMCID: PMC8381443 DOI: 10.1177/20458940211037274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 07/15/2021] [Indexed: 01/10/2023] Open
Abstract
Each year the American Thoracic Society (ATS) Conference brings together scientists who conduct basic, translational and clinical research to present on the recent advances in the field of respirology. Due to the Coronavirus Disease of 2019 (COVID-19) pandemic, the ATS2020 Conference was held online in a series of virtual meetings. In this review, we focus on the breakthroughs in pulmonary hypertension research. We have selected 11 of the best basic science abstracts which were presented at the ATS2020 Assembly on Pulmonary Circulation mini-symposium "What's New in Pulmonary Arterial Hypertension (PAH) and Right Ventricular (RV) Signaling: Lessons from the Best Abstracts," reflecting the current state of the art and associated challenges in PH. Particular emphasis is placed on understanding the mechanisms underlying RV failure, the regulation of inflammation, and the novel therapeutic targets that emerged from preclinical research. The pathologic interactions between pulmonary hypertension, right ventricular function and COVID-19 are also discussed.
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Affiliation(s)
- Francois Potus
- Pulmonary Hypertension Research Group, Centre de Recherche de
l'Institut Universitaire de Cardiologie et Pneumologie de Quebec City, Quebec,
Canada
| | - Andrea L. Frump
- Division of Pulmonary, Critical Care, Sleep and Occupational
Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Soban Umar
- Department of Anesthesiology and Perioperative Medicine, Division of
Molecular Medicine, David Geffen School of Medicine at University of California Los
Angeles, Los Angeles, CA, USA
| | - Rebecca R. Vanderpool
- Division of Translational and Regenerative Medicine, University of
Arizona, Tucson, AZ, USA
| | - Imad Al Ghouleh
- Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, and
Division of Cardiology, Department of Medicine, University of Pittsburgh School of
Medicine, Pittsburgh, PA, USA
| | - Yen-Chun Lai
- Division of Pulmonary, Critical Care, Sleep and Occupational
Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
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72
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Zhuang X, Tsukuda S, Wrensch F, Wing PA, Schilling M, Harris JM, Borrmann H, Morgan SB, Cane JL, Mailly L, Thakur N, Conceicao C, Sanghani H, Heydmann L, Bach C, Ashton A, Walsh S, Tan TK, Schimanski L, Huang KYA, Schuster C, Watashi K, Hinks TS, Jagannath A, Vausdevan SR, Bailey D, Baumert TF, McKeating JA. The circadian clock component BMAL1 regulates SARS-CoV-2 entry and replication in lung epithelial cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021:2021.03.20.436163. [PMID: 33758862 PMCID: PMC7987021 DOI: 10.1101/2021.03.20.436163] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The COVID-19 pandemic, caused by SARS-CoV-2 coronavirus, is a global health issue with unprecedented challenges for public health. SARS-CoV-2 primarily infects cells of the respiratory tract, via Spike glycoprotein binding angiotensin-converting enzyme (ACE2). Circadian rhythms coordinate an organism’s response to its environment and can regulate host susceptibility to virus infection. We demonstrate a circadian regulation of ACE2 in lung epithelial cells and show that silencing BMAL1 or treatment with a synthetic REV-ERB agonist SR9009 reduces ACE2 expression and inhibits SARS-CoV-2 entry. Treating infected cells with SR9009 limits viral replication and secretion of infectious particles, showing that post-entry steps in the viral life cycle are influenced by the circadian system. Transcriptome analysis revealed that Bmal1 silencing induced a wide spectrum of interferon stimulated genes in Calu-3 lung epithelial cells, providing a mechanism for the circadian pathway to dampen SARS-CoV-2 infection. Our study suggests new approaches to understand and improve therapeutic targeting of SARS-CoV-2.
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73
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Wang Q, Sundar IK, Lucas JH, Muthumalage T, Rahman I. Molecular clock REV-ERBα regulates cigarette smoke-induced pulmonary inflammation and epithelial-mesenchymal transition. JCI Insight 2021; 6:145200. [PMID: 34014841 PMCID: PMC8262497 DOI: 10.1172/jci.insight.145200] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 05/17/2021] [Indexed: 01/20/2023] Open
Abstract
Cigarette smoke (CS) is the main etiological factor in the pathogenesis of emphysema/chronic obstructive pulmonary disease (COPD), which is associated with abnormal epithelial-mesenchymal transition (EMT). Previously, we have shown an association among circadian rhythms, CS-induced lung inflammation, and nuclear heme receptor α (REV-ERBα), acting as an antiinflammatory target in both pulmonary epithelial cells and fibroblasts. We hypothesized that molecular clock REV-ERBα plays an important role in CS-induced circadian dysfunction and EMT alteration. C57BL/6J WT and REV-ERBα heterozygous (Het) and –KO mice were exposed to CS for 30 days (subchronic) and 4 months (chronic), and WT mice were exposed to CS for 10 days with or without REV-ERBα agonist (SR9009) administration. Subchronic/chronic CS exposure caused circadian disruption and dysregulated EMT in the lungs of WT and REV-ERBα–KO mice; both circadian and EMT dysregulation were exaggerated in the REV-ERBα–KO condition. REV-ERBα agonist, SR9009 treatment reduced acute CS-induced inflammatory response and abnormal EMT in the lungs. Moreover, REV-ERBα agonist (GSK4112) inhibited TGF-β/CS–induced fibroblast differentiation in human fetal lung fibroblast 1 (HFL-1). Thus, CS-induced circadian gene alterations and EMT activation are mediated through a Rev-erbα–dependent mechanism, which suggests activation of REV-ERBα as a novel therapeutic approach for smoking-induced chronic inflammatory lung diseases.
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Affiliation(s)
- Qixin Wang
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA
| | - Isaac K Sundar
- Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Joseph H Lucas
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA
| | - Thivanka Muthumalage
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA
| | - Irfan Rahman
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA
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74
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Kinouchi K, Mikami Y, Kanai T, Itoh H. Circadian rhythms in the tissue-specificity from metabolism to immunity; insights from omics studies. Mol Aspects Med 2021; 80:100984. [PMID: 34158177 DOI: 10.1016/j.mam.2021.100984] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/04/2021] [Accepted: 06/07/2021] [Indexed: 12/31/2022]
Abstract
Creatures on earth have the capacity to preserve homeostasis in response to changing environments. The circadian clock enables organisms to adapt to daily predictable rhythms in surrounding conditions. In mammals, circadian clocks constitute hierarchical network, where the central pacemaker in hypothalamic suprachiasmatic nucleus (SCN) serves as a time-keeping machinery and governs peripheral clocks in every other organ through descending neural and humoral factors. The central clock in SCN is reset by light, whilst peripheral clocks are entrained by feeding-fasting rhythms, emphasizing the point that temporal patterns of nutrient availability specifies peripheral clock functions. Indeed, emerging evidence revealed various types of diets or timing of food intake reprogram circadian rhythms in a tissue specific manner. This advancement in understanding of mechanisms underlying tissue specific responsiveness of circadian oscillators to nutrients at the genomic and epigenomic levels is largely owing to employment of state-of-the-art technologies. Specifically, high-throughput transcriptome, proteome, and metabolome have provided insights into how genes, proteins, and metabolites behave over circadian cycles in a given tissue under a certain dietary condition in an unbiased fashion. Additionally, combinations with specialized types of sequencing such as nascent-seq and ribosomal profiling allow us to dissect how circadian rhythms are generated or obliterated at each step of gene regulation. Importantly, chromatin immunoprecipitation followed by deep sequencing methods provide chromatin landscape in terms of regulatory mechanisms of circadian gene expression. In this review, we outline recent discoveries on temporal genomic and epigenomic regulation of circadian rhythms, discussing entrainment of the circadian rhythms by feeding as a fundamental new comprehension of metabolism and immune response, and as a potential therapeutic strategy of metabolic and inflammatory diseases.
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Affiliation(s)
- Kenichiro Kinouchi
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, 160-8582, Japan.
| | - Yohei Mikami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan.
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroshi Itoh
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, 160-8582, Japan
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Mitochondrial-Targeting Antioxidant SS-31 Suppresses Airway Inflammation and Oxidative Stress Induced by Cigarette Smoke. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6644238. [PMID: 34221235 PMCID: PMC8219423 DOI: 10.1155/2021/6644238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/21/2021] [Accepted: 04/26/2021] [Indexed: 02/05/2023]
Abstract
This study investigated whether the mitochondrial-targeted peptide SS-31 can protect against cigarette smoke- (CS-) induced airway inflammation and oxidative stress in vitro and in vivo. Mice were exposed to CS for 4 weeks to establish a CS-induced airway inflammation model, and those in the experimental group were pretreated with SS-31 1 h before CS exposure. Pathologic changes and oxidative stress in lung tissue, inflammatory cell counts, and proinflammatory cytokine levels in bronchoalveolar lavage fluid (BALF) were examined. The mechanistic basis for the effects of SS-31 on CS extract- (CSE-) induced airway inflammation and oxidative stress was investigated using BEAS-2B bronchial epithelial cells and by RNA sequencing and western blot analysis of lung tissues. SS-31 attenuated CS-induced inflammatory injury of the airway and reduced total cell, neutrophil, and macrophage counts and tumor necrosis factor- (TNF-) α, interleukin- (IL-) 6, and matrix metalloproteinase (MMP) 9 levels in BALF. SS-31 also attenuated CS-induced oxidative stress by decreasing malondialdehyde (MDA) and myeloperoxidase (MPO) activities and increasing that of superoxide dismutase (SOD). It also reversed CS-induced changes in the expression of mitochondrial fission protein (MFF) and optic atrophy (OPA) 1 and reduced the amount of cytochrome c released into the cytosol. Pretreatment with SS-31 normalized TNF-α, IL-6, and MMP9 expression, MDA and SOD activities, and ROS generation in CSE-treated BEAS-2B cells and reversed the changes in MFF and OPA1 expression. RNA sequencing and western blot analysis showed that SS-31 inhibited CS-induced activation of the mitogen-activated protein kinase (MAPK) signaling pathway in vitro and in vivo. Thus, SS-31 alleviates CS-induced airway inflammation and oxidative stress via modulation of mitochondrial function and regulation of MAPK signaling and thus has therapeutic potential for the treatment of airway disorders caused by smoking.
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76
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Marottoli FM, Trevino TN, Geng X, Arbieva Z, Kanabar P, Maienschein-Cline M, Lee JC, Lutz SE, Tai LM. Autocrine Effects of Brain Endothelial Cell-Produced Human Apolipoprotein E on Metabolism and Inflammation in vitro. Front Cell Dev Biol 2021; 9:668296. [PMID: 34178992 PMCID: PMC8225247 DOI: 10.3389/fcell.2021.668296] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/11/2021] [Indexed: 11/13/2022] Open
Abstract
Reports of APOE4-associated neurovascular dysfunction during aging and in neurodegenerative disorders has led to ongoing research to identify underlying mechanisms. In this study, we focused on whether the APOE genotype of brain endothelial cells modulates their own phenotype. We utilized a modified primary mouse brain endothelial cell isolation protocol that enabled us to perform experiments without subculture. Through initial characterization we found, that compared to APOE3, APOE4 brain endothelial cells produce less apolipoprotein E (apoE) and have altered metabolic and inflammatory gene expression profiles. Further analysis revealed APOE4 brain endothelial cultures have higher preference for oxidative phosphorylation over glycolysis and, accordingly, higher markers of mitochondrial activity. Mitochondrial activity generates reactive oxygen species, and, with APOE4, there were higher mitochondrial superoxide levels, lower levels of antioxidants related to heme and glutathione and higher markers/outcomes of oxidative damage to proteins and lipids. In parallel, or resulting from reactive oxygen species, there was greater inflammation in APOE4 brain endothelial cells including higher chemokine levels and immune cell adhesion under basal conditions and after low-dose lipopolysaccharide (LPS) treatment. In addition, paracellular permeability was higher in APOE4 brain endothelial cells in basal conditions and after high-dose LPS treatment. Finally, we found that a nuclear receptor Rev-Erb agonist, SR9009, improved functional metabolic markers, lowered inflammation and modulated paracellular permeability at baseline and following LPS treatment in APOE4 brain endothelial cells. Together, our data suggest that autocrine signaling of apoE in brain endothelial cells represents a novel cellular mechanism for how APOE regulates neurovascular function.
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Affiliation(s)
- Felecia M Marottoli
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, United States
| | - Troy N Trevino
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, United States
| | - Xue Geng
- Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States
| | - Zarema Arbieva
- Genome Research Core, Research Resources Center, University of Illinois at Chicago, Chicago, IL, United States
| | - Pinal Kanabar
- Research Informatics Core, Research Resources Center, University of Illinois at Chicago, Chicago, IL, United States
| | - Mark Maienschein-Cline
- Research Informatics Core, Research Resources Center, University of Illinois at Chicago, Chicago, IL, United States
| | - James C Lee
- Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States
| | - Sarah E Lutz
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, United States
| | - Leon M Tai
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, United States
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77
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Xiang K, Xu Z, Hu YQ, He YS, Wu GC, Li TY, Wang XR, Ding LH, Zhang Q, Tao SS, Ye DQ, Pan HF, Wang DG. Circadian clock genes as promising therapeutic targets for autoimmune diseases. Autoimmun Rev 2021; 20:102866. [PMID: 34118460 DOI: 10.1016/j.autrev.2021.102866] [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: 03/22/2021] [Accepted: 03/30/2021] [Indexed: 12/31/2022]
Abstract
Circadian rhythm is a natural, endogenous process whose physiological functions are controlled by a set of clock genes. Disturbance of the clock genes have detrimental effects on both innate and adaptive immunity, which significantly enhance pro-inflammatory responses and susceptibility to autoimmune diseases via strictly controlling the individual cellular components of the immune system that initiate and perpetuate the inflammation pathways. Autoimmune diseases, especially rheumatoid arthritis (RA), often exhibit substantial circadian oscillations, and circadian rhythm is involved in the onset and progression of autoimmune diseases. Mounting evidence indicate that the synthetic ligands of circadian clock genes have the property of reducing the susceptibility and clinical severity of subjects. This review supplies an overview of the roles of circadian clock genes in the pathology of autoimmune diseases, including BMAL1, CLOCK, PER, CRY, REV-ERBα, and ROR. Furthermore, summarized some circadian clock genes as candidate genes for autoimmune diseases and current advancement on therapy of autoimmune diseases with synthetic ligands of circadian clock genes. The existing body of knowledge demonstrates that circadian clock genes are inextricably linked to autoimmune diseases. Future research should pay attention to improve the quality of life of patients with autoimmune diseases and reduce the effects of drug preparation on the normal circadian rhythms.
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Affiliation(s)
- Kun Xiang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Zhiwei Xu
- School of Public Health, Faculty of Medicine, University of Queensland, 288 Herston Road, Herston, QLD, 4006, Brisbane, Australia
| | - Yu-Qian Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Yi-Sheng He
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Guo-Cui Wu
- School of Nursing, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China
| | - Tian-Yu Li
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xue-Rong Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Li-Hong Ding
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Qin Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Sha-Sha Tao
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Dong-Qing Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China.
| | - De-Guang Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
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78
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Wang R, Murray CS, Fowler SJ, Simpson A, Durrington HJ. Asthma diagnosis: into the fourth dimension. Thorax 2021; 76:624-631. [PMID: 33504564 PMCID: PMC8223645 DOI: 10.1136/thoraxjnl-2020-216421] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/18/2020] [Accepted: 12/31/2020] [Indexed: 02/06/2023]
Abstract
Asthma is the most common chronic respiratory disease in the UK; however, the misdiagnosis rate is substantial. The lack of consistency in national guidelines and the paucity of data on the performance of diagnostic algorithms compound the challenges in asthma diagnosis. Asthma is a highly rhythmic disease, characterised by diurnal variability in clinical symptoms and pathogenesis. Asthma also varies day to day, seasonally and from year to year. As much as it is a hallmark for asthma, this variability also poses significant challenges to asthma diagnosis. Almost all established asthma diagnostic tools demonstrate diurnal variation, yet few are performed with standardised timing of measurements. The dichotomous interpretation of diagnostic outcomes using fixed cut-off values may further limit the accuracy of the tests, particularly when diurnal variability straddles cut-off values within a day, and careful interpretation beyond the 'positive' and 'negative' outcome is needed. The day-to-day and more long-term variations are less predictable and it is unclear whether performing asthma diagnostic tests during asymptomatic periods may influence diagnostic sensitivities. With the evolution of asthma diagnostic tools, home monitoring and digital apps, novel strategies are needed to bridge these gaps in knowledge, and circadian variability should be considered during the standardisation process. This review summarises the biological mechanisms of circadian rhythms in asthma and highlights novel data on the significance of time (the fourth dimension) in asthma diagnosis.
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Affiliation(s)
- Ran Wang
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK,Manchester Academic Health Science Centre and NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Clare S Murray
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK,Manchester Academic Health Science Centre and NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Stephen J Fowler
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK,Manchester Academic Health Science Centre and NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Angela Simpson
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK,Manchester Academic Health Science Centre and NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Hannah Jane Durrington
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK .,Manchester Academic Health Science Centre and NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
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79
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Moustafa A. Chronic Exposure to Continuous Brightness or Darkness Modulates Immune Responses and Ameliorates the Antioxidant Enzyme System in Male Rats. Front Vet Sci 2021; 8:621188. [PMID: 33937367 PMCID: PMC8081841 DOI: 10.3389/fvets.2021.621188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/22/2021] [Indexed: 01/02/2023] Open
Abstract
Circadian rhythms are considered vital regulators of immune functions. This study aims to elucidate the effects of chronic circadian disruption on immune functions, clock genes expression, and antioxidant enzymes levels in lymphoid tissues. Adult male Sprague-Dawley rats were subjected to a normal light/dark cycle or either continuous light (LL) or continuous dark (DD) for 8 weeks. The results demonstrated (1) significant decreases in the circulating levels of interleukin 1β, interleukin 6 and tumor necrosis factor alpha (TNF-α) and significant increases in the levels of interleukin 10, interleukin 12, C-reactive protein (CRP) and corticosterone in both LL and DD groups; (2) upregulation in mRNA expression of core clock genes Cry1, Cry2, Per1, Per2, and Per3 in the spleen of the DD group and downregulation in Cry1 and Cry2 genes in the LL group; (3) elevation of total antioxidant capacity (TAC), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), nitric oxide (NO) and the lipid peroxidation marker malondialdehyde (MDA) in the spleen, lymph node and bone marrow of both the LL and DD groups and decreases in the levels of the same markers in the thymus of the LL group; (4) decreased numbers of CD4+ and CD8+ cells in lymphoid tissues of both the LL and the DD groups; (5) reduced platelets count and suppressed immunoglobulin (IgM, IgE) in the LL and DD groups with marked erythropenia and leukocytosis in the DD group. Taken together, circadian misalignment leads to hematological disruptions, dysregulation of clock genes, and inflammatory mediators, which further enhances the antioxidant enzyme system that is crucial for an organism's adaptation to stresses.
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Affiliation(s)
- Amira Moustafa
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
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80
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Mao FY, Lv YP, Hao CJ, Teng YS, Liu YG, Cheng P, Yang SM, Chen W, Liu T, Zou QM, Xie R, Xu JY, Zhuang Y. Helicobacter pylori-Induced Rev-erbα Fosters Gastric Bacteria Colonization by Impairing Host Innate and Adaptive Defense. Cell Mol Gastroenterol Hepatol 2021; 12:395-425. [PMID: 33676046 PMCID: PMC8255816 DOI: 10.1016/j.jcmgh.2021.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Rev-erbα represents a powerful transcriptional repressor involved in immunity. However, the regulation, function, and clinical relevance of Rev-erbα in Helicobacter pylori infection are presently unknown. METHODS Rev-erbα was examined in gastric samples from H pylori-infected patients and mice. Gastric epithelial cells (GECs) were isolated and infected with H pylori for Rev-erbα regulation assays. Gastric tissues from Rev-erbα-/- and wild-type (littermate control) mice or these mice adoptively transferred with CD4+ T cells from IFN-γ-/- and wild-type mice, bone marrow chimera mice and mice with in vivo pharmacological activation or inhibition of Rev-erbα were examined for bacteria colonization. GECs, CD45+CD11c-Ly6G-CD11b+CD68- myeloid cells and CD4+ T cells were isolated, stimulated and/or cultured for Rev-erbα function assays. RESULTS Rev-erbα was increased in gastric mucosa of H pylori-infected patients and mice. H pylori induced GECs to express Rev-erbα via the phosphorylated cagA that activated ERK signaling pathway to mediate NF-κB directly binding to Rev-erbα promoter, which resulted in increased bacteria colonization within gastric mucosa. Mechanistically, Rev-erbα in GECs not only directly suppressed Reg3b and β-defensin-1 expression, which resulted in impaired bactericidal effects against H pylori of these antibacterial proteins in vitro and in vivo; but also directly inhibited chemokine CCL21 expression, which led to decreased gastric influx of CD45+CD11c-Ly6G-CD11b+CD68- myeloid cells by CCL21-CCR7-dependent migration and, as a direct consequence, reduced bacterial clearing capacity of H pylori-specific Th1 cell response. CONCLUSIONS Overall, this study identifies a model involving Rev-erbα, which collectively ensures gastric bacterial persistence by suppressing host gene expression required for local innate and adaptive defense against H pylori.
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Affiliation(s)
- Fang-Yuan Mao
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Yi-Pin Lv
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Chuan-Jie Hao
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Yong-Sheng Teng
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Yu-Gang Liu
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Ping Cheng
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Shi-Ming Yang
- Department of Gastroenterology, XinQiao Hospital, Third Military Medical University, Chongqing, China
| | - Weisan Chen
- La Trobe Institute of Molecular Science, La Trobe University, Bundoora, Australia
| | - Tao Liu
- Department of Pharmacology, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Quan-Ming Zou
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Rui Xie
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Jing-Yu Xu
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yuan Zhuang
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China,Department of Gastroenterology, the Affiliated Hospital of Southwest Medical University, Luzhou, China,Correspondence Address correspondence to: Yuan Zhuang, National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, No.30 Gaotanyan Street, Chongqing 400038, China.fax: (86)023-68752315.
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81
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Abo SMC, Layton AT. Modeling the circadian regulation of the immune system: Sexually dimorphic effects of shift work. PLoS Comput Biol 2021; 17:e1008514. [PMID: 33788832 PMCID: PMC8041207 DOI: 10.1371/journal.pcbi.1008514] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 04/12/2021] [Accepted: 03/06/2021] [Indexed: 12/31/2022] Open
Abstract
The circadian clock exerts significance influence on the immune system and disruption of circadian rhythms has been linked to inflammatory pathologies. Shift workers often experience circadian misalignment as their irregular work schedules disrupt the natural light-dark cycle, which in turn can cause serious health problems associated with alterations in genetic expressions of clock genes. In particular, shift work is associated with impairment in immune function, and those alterations are sex-specific. The goal of this study is to better understand the mechanisms that explain the weakened immune system in shift workers. To achieve that goal, we have constructed a mathematical model of the mammalian pulmonary circadian clock coupled to an acute inflammation model in the male and female rats. Shift work was simulated by an 8h-phase advance of the circadian system with sex-specific modulation of clock genes. The model reproduces the clock gene expression in the lung and the immune response to various doses of lipopolysaccharide (LPS). Under normal conditions, our model predicts that a host is more sensitive to LPS at circadian time (CT) CT12 versus CT0 due to a dynamic change of Interleukin 10 (IL-10), an anti-inflammatory cytokine. We identify REV-ERB as a key modulator of IL-10 activity throughout the circadian day. The model also predicts a reversal of the times of lowest and highest sensitivity to LPS, with males and females exhibiting an exaggerated response to LPS at CT0, which is countered by a blunted immune response at CT12. Overall, females produce fewer pro-inflammatory cytokines than males, but the extent of sequelae experienced by males and females varies across the circadian day. This model can serve as an essential component in an integrative model that will yield mechanistic understanding of how shift work-mediated circadian disruptions affect the inflammatory and other physiological responses.
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Affiliation(s)
- Stéphanie M. C. Abo
- Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario, Canada
| | - Anita T. Layton
- Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario, Canada
- Department of Biology, Cheriton School of Computer Science, and School of Pharmacology, University of Waterloo, Waterloo, Ontario, Canada
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82
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Khor YH, Ryerson CJ, Landry SA, Howard ME, Churchward TJ, Edwards BA, Hamilton GS, Joosten SA. Interstitial lung disease and obstructive sleep apnea. Sleep Med Rev 2021; 58:101442. [PMID: 33561604 DOI: 10.1016/j.smrv.2021.101442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/30/2020] [Accepted: 10/29/2020] [Indexed: 12/11/2022]
Abstract
Obstructive sleep apnea (OSA) is one of the most common comorbidities in patients with interstitial lung disease (ILD). Growing evidence highlights the significance of sleep disturbance on health outcomes in this population. The relationships between ILD and OSA are complex and possibly bidirectional, with multiple mechanisms postulated for the pathogenic and physiologic links. This review synthesizes current evidence and hypotheses regarding different aspects of the relationships between ILD and OSA, emphasizing the interactions between epidemiology, pathogenesis, and pathophysiology.
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Affiliation(s)
- Yet H Khor
- Department of Respiratory and Sleep Medicine, Austin Health, Heidelberg, Victoria, Australia; Institute for Breathing and Sleep, Heidelberg, Victoria, Australia; Faculty of Medicine, University of Melbourne, Melbourne, Victoria, Australia
| | - Christopher J Ryerson
- Centre for Heart Lung Innovation, Providence Health Care, Vancouver, BC, Canada; Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Shane A Landry
- Sleep and Circadian Medicine Laboratory, Department of Physiology, Monash University, Victoria, Australia; School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Australia
| | - Mark E Howard
- Department of Respiratory and Sleep Medicine, Austin Health, Heidelberg, Victoria, Australia; Institute for Breathing and Sleep, Heidelberg, Victoria, Australia; Faculty of Medicine, University of Melbourne, Melbourne, Victoria, Australia; School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Australia
| | - Thomas J Churchward
- Department of Respiratory and Sleep Medicine, Austin Health, Heidelberg, Victoria, Australia; Institute for Breathing and Sleep, Heidelberg, Victoria, Australia
| | - Bradley A Edwards
- Sleep and Circadian Medicine Laboratory, Department of Physiology, Monash University, Victoria, Australia; School of Psychological Sciences and Turner Institute for Brain and Mental Health, Monash University, Australia
| | - Garun S Hamilton
- Monash Lung and Sleep, Victoria, Australia; School of Clinical Sciences, Monash University, Victoria, Australia
| | - Simon A Joosten
- Monash Lung and Sleep, Victoria, Australia; School of Clinical Sciences, Monash University, Victoria, Australia.
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83
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Sengupta S, Ince L, Sartor F, Borrmann H, Zhuang X, Naik A, Curtis A, McKeating JA. Clocks, Viruses, and Immunity: Lessons for the COVID-19 Pandemic. J Biol Rhythms 2021; 36:23-34. [PMID: 33480287 PMCID: PMC7970201 DOI: 10.1177/0748730420987669] [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] [Indexed: 02/06/2023]
Abstract
Circadian rhythms are evolutionarily conserved anticipatory systems that
allow the host to prepare and respond to threats in its environment.
This article summarizes a European Biological Rhythms Society (EBRS)
workshop held in July 2020 to review current knowledge of the
interplay between the circadian clock and viral infections to inform
therapeutic strategies against SARS-CoV-2 and COVID-19. A large body
of work supports the role of the circadian clock in regulating various
aspects of viral replication, host responses, and associated
pathogenesis. We review the evidence describing the multifaceted role
of the circadian clock, spanning host susceptibility, antiviral
mechanisms, and host resilience. Finally, we define the most pressing
research questions and how our knowledge of chronobiology can inform
key translational research priorities.
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Affiliation(s)
- Shaon Sengupta
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Institute of Translational Medicine and Therapeutics, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Chronobiology and Sleep Institute, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Louise Ince
- Departement de Pathologie et Immunologie, Geneva, Switzerland
| | - Francesca Sartor
- Institute of Medical Psychology, Medical Faculty, Ludwig Maximilian University of Munich, Munich, Germany
| | - Helene Borrmann
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Xiaodong Zhuang
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Amruta Naik
- Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Annie Curtis
- School of Pharmacy and Biomolecular Sciences, Tissue Engineering Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Jane A McKeating
- Nuffield Department of Medicine, University of Oxford, Oxford, UK.,Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, UK
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84
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Abstract
The community of cells lining our airways plays a collaborative role in the preservation of immune homeostasis in the lung and provides protection from the pathogens and pollutants in the air we breathe. In addition to its structural attributes that provide effective mucociliary clearance of the lower airspace, the airway epithelium is an immunologically active barrier surface that senses changes in the airway environment and interacts with resident and recruited immune cells. Single-cell RNA-sequencing is illuminating the cellular heterogeneity that exists in the airway wall and has identified novel cell populations with unique molecular signatures, trajectories of differentiation and diverse functions in health and disease. In this Review, we discuss how our view of the airway epithelial landscape has evolved with the advent of transcriptomic approaches to cellular phenotyping, with a focus on epithelial interactions with the local neuronal and immune systems.
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85
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Durrington HJ, Krakowiak K, Meijer P, Begley N, Maidstone R, Goosey L, Gibbs JE, Blaikley JF, Gregory LG, Lloyd CM, Loudon ASI, Ray DW. Circadian asthma airway responses are gated by REV-ERBα. Eur Respir J 2020; 56:13993003.02407-2019. [PMID: 32586876 PMCID: PMC7613655 DOI: 10.1183/13993003.02407-2019] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 06/06/2020] [Indexed: 11/05/2022]
Abstract
BACKGROUND The circadian clock powerfully regulates inflammation and the clock protein REV-ERBα is known to play a key role as a repressor of the inflammatory response. Asthma is an inflammatory disease of the airways with a strong time of day rhythm. Airway hyper-responsiveness (AHR) is a dominant feature of asthma; however, it is not known if this is under clock control. OBJECTIVES To determine if allergy-mediated AHR is gated by the clock protein REV-ERBα. METHODS After exposure to the intra-nasal house dust mite (HDM) allergen challenge model at either dawn or dusk, AHR to methacholine was measured invasively in mice. MAIN RESULTS Wild-type (WT) mice show markedly different time of day AHR responses (maximal at dusk/start of the active phase), both in vivo and ex vivo, in precision cut lung slices. Time of day effects on AHR were abolished in mice lacking the clock gene Rev-erbα, indicating that such effects on asthma response are likely to be mediated via the circadian clock. We suggest that muscarinic receptors one (Chrm 1) and three (Chrm 3) may play a role in this pathway. CONCLUSIONS We identify a novel circuit regulating a core process in asthma, potentially involving circadian control of muscarinic receptor expression, in a REV-ERBα dependent fashion. CLINICAL IMPLICATION These insights suggest the importance of considering the timing of drug administration in clinic trials and in clinical practice (chronotherapy).
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Affiliation(s)
- Hannah J Durrington
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Wythenshawe Hospital, University Hospital of South Manchester, Manchester University NHS Foundation Trust (MFT), Manchester, UK
| | - Karolina Krakowiak
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Peter Meijer
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Nicola Begley
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Robert Maidstone
- Division of Informatics, Imaging and Data Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Laurence Goosey
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Julie E Gibbs
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - John F Blaikley
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Wythenshawe Hospital, University Hospital of South Manchester, Manchester University NHS Foundation Trust (MFT), Manchester, UK
| | - Lisa G Gregory
- National Heart and Lung Institute, Imperial College, London, UK
| | - Clare M Lloyd
- National Heart and Lung Institute, Imperial College, London, UK
| | - Andrew S I Loudon
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - David W Ray
- Division of Diabetes, Endocrinology and Gastroenterology, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
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86
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Huang S, Jiao X, Lu D, Pei X, Qi D, Li Z. Recent advances in modulators of circadian rhythms: an update and perspective. J Enzyme Inhib Med Chem 2020; 35:1267-1286. [PMID: 32506972 PMCID: PMC7717701 DOI: 10.1080/14756366.2020.1772249] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/29/2020] [Accepted: 05/08/2020] [Indexed: 12/23/2022] Open
Abstract
Circadian rhythm is a universal life phenomenon that plays an important role in maintaining the multiple physiological functions and regulating the adaptability to internal and external environments of flora and fauna. Circadian alignment in humans has the greatest effect on human health, and circadian misalignment is closely associated with increased risk for metabolic syndrome, cardiovascular diseases, neurological diseases, immune diseases, cancer, sleep disorders, and ophthalmic diseases. The recent description of clock proteins and related post-modification targets was involved in several diseases, and numerous lines of evidence are emerging that small molecule modulators of circadian rhythms can be used to rectify circadian disorder. Herein, we attempt to update the disclosures about the modulators targeting core clock proteins and related post-modification targets, as well as the relationship between circadian rhythm disorders and human health as well as the therapeutic role and prospect of these small molecule modulators in circadian rhythm related disease.
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Affiliation(s)
- Shenzhen Huang
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Xinwei Jiao
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Dingli Lu
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Xiaoting Pei
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Di Qi
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
| | - Zhijie Li
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, People’s Hospital of Henan University, Zhengzhou, China
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87
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The circadian machinery links metabolic disorders and depression: A review of pathways, proteins and potential pharmacological interventions. Life Sci 2020; 265:118809. [PMID: 33249097 DOI: 10.1016/j.lfs.2020.118809] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/11/2020] [Accepted: 11/18/2020] [Indexed: 12/16/2022]
Abstract
Circadian rhythms are responsible for regulating a number of physiological processes. The central oscillator is located within the suprachiasmatic nucleus (SCN) of the hypothalamus and the SCN synchronises the circadian clocks that are found in our peripheral organs through neural and humoral signalling. At the molecular level, biological clocks consist of transcription-translation feedback loops (TTFLs) and these pathways are influenced by transcription factors, post-translational modifications, signalling pathways and epigenetic modifiers. When disruptions occur in the circadian machinery, the activities of the proteins implicated in this network and the expression of core clock or clock-controlled genes (CCGs) can be altered. Circadian misalignment can also arise when there is desychronisation between our internal clocks and environmental stimuli. There is evidence in the literature demonstrating that disturbances in the circadian rhythm contribute to the pathophysiology of several diseases and disorders. This includes the metabolic syndrome and recently, it has been suggested that the 'circadian syndrome' may be a more appropriate term to use to not only describe the cardio-metabolic risk factors but also the associated comorbidities. Here we overview the molecular architecture of circadian clocks in mammals and provide insight into the effects of shift work, exposure to artificial light, food intake and stress on the circadian rhythm. The relationship between circadian rhythms, metabolic disorders and depression is reviewed and this is a topic that requires further investigation. We also describe how particular proteins involved in the TTFLs can be potentially modulated by small molecules, including pharmacological interventions and dietary compounds.
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88
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The circadian clock and inflammation: A new insight. Clin Chim Acta 2020; 512:12-17. [PMID: 33242468 DOI: 10.1016/j.cca.2020.11.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/14/2022]
Abstract
The circadian clock is a complex cellular mechanism that controls a series of physiological processes, including inflammation. It can directly interact physically with the components of the key inflammatory pathway. Similarly, inflammation can also lead to circadian rhythm disorders, which may further amplify the inflammatory response and aggravate tissue damage. This review offers a structured overview that focusses on the core proteins of the circadian clock and their interactions with inflammatory players, and provides a potential mechanism for the pathological rhythms observed under inflammatory conditions.
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89
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Fischl H, McManus D, Oldenkamp R, Schermelleh L, Mellor J, Jagannath A, Furger A. Cold-induced chromatin compaction and nuclear retention of clock mRNAs resets the circadian rhythm. EMBO J 2020; 39:e105604. [PMID: 33034091 PMCID: PMC7667876 DOI: 10.15252/embj.2020105604] [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: 05/12/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 12/22/2022] Open
Abstract
Cooling patients to sub‐physiological temperatures is an integral part of modern medicine. We show that cold exposure induces temperature‐specific changes to the higher‐order chromatin and gene expression profiles of human cells. These changes are particularly dramatic at 18°C, a temperature synonymous with that experienced by patients undergoing controlled deep hypothermia during surgery. Cells exposed to 18°C exhibit largely nuclear‐restricted transcriptome changes. These include the nuclear accumulation of mRNAs encoding components of the negative limbs of the core circadian clock, most notably REV‐ERBα. This response is accompanied by compaction of higher‐order chromatin and hindrance of mRNPs from engaging nuclear pores. Rewarming reverses chromatin compaction and releases the transcripts into the cytoplasm, triggering a pulse of negative limb gene proteins that reset the circadian clock. We show that cold‐induced upregulation of REV‐ERBα is sufficient to trigger this reset. Our findings uncover principles of the cellular cold response that must be considered for current and future applications involving therapeutic deep hypothermia.
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Affiliation(s)
- Harry Fischl
- Department of Biochemistry, University of Oxford, Oxford, UK
| | - David McManus
- Department of Biochemistry, University of Oxford, Oxford, UK
| | - Roel Oldenkamp
- Department of Biochemistry, University of Oxford, Oxford, UK
| | | | - Jane Mellor
- Department of Biochemistry, University of Oxford, Oxford, UK
| | - Aarti Jagannath
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - André Furger
- Department of Biochemistry, University of Oxford, Oxford, UK
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90
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Griffett K, Bedia-Diaz G, Elgendy B, Burris TP. REV-ERB agonism improves liver pathology in a mouse model of NASH. PLoS One 2020; 15:e0236000. [PMID: 33002003 PMCID: PMC7529425 DOI: 10.1371/journal.pone.0236000] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 09/17/2020] [Indexed: 12/12/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) affects a significant number of people worldwide and currently there are no pharmacological treatments. NAFLD often presents with obesity, insulin resistance, and in some cases cardiovascular diseases. There is a clear need for treatment options to alleviate this disease since it often progresses to much more the much more severe non-alcoholic steatohepatitis (NASH). The REV-ERB nuclear receptor is a transcriptional repressor that regulates physiological processes involved in the development of NAFLD including lipogenesis and inflammation. We hypothesized that pharmacologically activating REV-ERB would suppress the progression of fatty liver in a mouse model of NASH. Using REV-ERB agonist SR9009 in a mouse NASH model, we demonstrate the beneficial effects of REV-ERB activation that led to an overall improvement of hepatic health by suppressing hepatic fibrosis and inflammatory response.
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Affiliation(s)
- Kristine Griffett
- Center for Clinical Pharmacology, Washington University School of Medicine and St. Louis College of Pharmacy, St. Louis, MO, United States of America
- * E-mail:
| | - Gonzalo Bedia-Diaz
- Center for Clinical Pharmacology, Washington University School of Medicine and St. Louis College of Pharmacy, St. Louis, MO, United States of America
| | - Bahaa Elgendy
- Center for Clinical Pharmacology, Washington University School of Medicine and St. Louis College of Pharmacy, St. Louis, MO, United States of America
| | - Thomas P. Burris
- Center for Clinical Pharmacology, Washington University School of Medicine and St. Louis College of Pharmacy, St. Louis, MO, United States of America
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91
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Wang S, Lin Y, Li F, Qin Z, Zhou Z, Gao L, Yang Z, Wang Z, Wu B. An NF-κB-driven lncRNA orchestrates colitis and circadian clock. SCIENCE ADVANCES 2020; 6:6/42/eabb5202. [PMID: 33055157 PMCID: PMC7556837 DOI: 10.1126/sciadv.abb5202] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 08/24/2020] [Indexed: 05/07/2023]
Abstract
We uncover a cycling and NF-κB-driven lncRNA (named Lnc-UC) that epigenetically modifies transcription of circadian clock gene Rev-erbα, thereby linking circadian clock to colitis. Cycling expression of Lnc-UC is generated by the central clock protein Bmal1 via an E-box element. NF-κB activation in experimental colitis transcriptionally drives Lnc-UC through direct binding to two κB sites. Lnc-UC ablation disrupts colonic expressions of clock genes in mice; particularly, Rev-erbα is down-regulated and its diurnal rhythm is blunted. Consistently, Lnc-UC promotes expression of Rev-erbα (a known dual NF-κB/Nlrp3 repressor) to inactivate NF-κB signaling and Nlrp3 inflammasome in macrophages. Furthermore, Lnc-UC ablation sensitizes mice to experimental colitis and abolishes the diurnal rhythmicity in disease severity. Mechanistically, Lnc-UC physically interacts with Cbx1 protein to reduce its gene silencing activity via H3K9me3, thereby enhancing Rev-erbα transcription and expression. In addition, we identify a human Lnc-UC that has potential to promote Rev-erbα expression and restrain inflammations.
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Affiliation(s)
- Shuai Wang
- College of Pharmacy, Jinan University, Guangzhou 510632, China
- Integrated Chinese and Western Medicine Postdoctoral research station, Jinan University, Guangzhou 510632, China
| | - Yanke Lin
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Feng Li
- Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou 510632, China
| | - Zifei Qin
- Department of Pharmacy, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Ziyue Zhou
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Lu Gao
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Zemin Yang
- College of Pharmacy, Jinan University, Guangzhou 510632, China
| | - Zhigang Wang
- Department of Intensive Care Unit, First Affiliated Hospital of Jinan University, Guangzhou 510632, China
| | - Baojian Wu
- College of Pharmacy, Jinan University, Guangzhou 510632, China.
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, China
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92
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Abstract
The circadian clock protein REVERBα is proposed to be a key regulator of liver metabolism. We now show that REVERBα action is critically dependent on metabolic state. Using transgenic mouse models, we show that the true role of REVERBα is to buffer against aberrant responses to metabolic perturbation, rather than confer rhythmic regulation to programs of lipid synthesis and storage, as has been thought previously. Thus, in the case of liver metabolism, the clock does not so much drive rhythmic processes, as provide protection against mistimed feeding cues. Understanding how the clock is coupled to metabolism is critical for understanding metabolic disease and the impacts of circadian disruptors such as shift work and 24-h lifestyles. The nuclear receptor REVERBα is a core component of the circadian clock and proposed to be a dominant regulator of hepatic lipid metabolism. Using antibody-independent ChIP-sequencing of REVERBα in mouse liver, we reveal a high-confidence cistrome and define direct target genes. REVERBα-binding sites are highly enriched for consensus RORE or RevDR2 motifs and overlap with corepressor complex binding. We find no evidence for transcription factor tethering and DNA-binding domain-independent action. Moreover, hepatocyte-specific deletion of Reverbα drives only modest physiological and transcriptional dysregulation, with derepressed target gene enrichment limited to circadian processes. Thus, contrary to previous reports, hepatic REVERBα does not repress lipogenesis under basal conditions. REVERBα control of a more extensive transcriptional program is only revealed under conditions of metabolic perturbation (including mistimed feeding, which is a feature of the global Reverbα−/− mouse). Repressive action of REVERBα in the liver therefore serves to buffer against metabolic challenge, rather than drive basal rhythmicity in metabolic activity.
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93
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Srikanta SB, Cermakian N. To Ub or not to Ub: Regulation of circadian clocks by ubiquitination and deubiquitination. J Neurochem 2020; 157:11-30. [PMID: 32717140 DOI: 10.1111/jnc.15132] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 12/28/2022]
Abstract
Circadian clocks are internal timing systems that enable organisms to adjust their behavioral and physiological rhythms to the daily changes of their environment. These clocks generate self-sustained oscillations at the cellular, tissue, and behavioral level. The rhythm-generating mechanism is based on a gene expression network with a delayed negative feedback loop that causes the transcripts to oscillate with a period of approximately 24 hr. This oscillatory nature of the proteins involved in this network necessitates that they are intrinsically unstable, with a short half-life. Hence, post-translational modifications (PTMs) are important to precisely time the presence, absence, and interactions of these proteins at appropriate times of the day. Ubiquitination and deubiquitination are counter-balancing PTMs which play a key role in this regulatory process. In this review, we take a comprehensive look at the roles played by the processes of ubiquitination and deubiquitination in the clock machinery of the most commonly studied eukaryotic models of the circadian clock: plants, fungi, fruit flies, and mammals. We present the effects exerted by ubiquitinating and deubiquitinating enzymes on the stability, but also the activity, localization, and interactions of clock proteins. Overall, these PTMs have key roles in regulating not only the pace of the circadian clocks but also their response to external cues and their control of cellular functions.
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Affiliation(s)
- Shashank Bangalore Srikanta
- Integrated Program in Neuroscience, McGill University, Montréal, QC, Canada.,Laboratory of Molecular Chronobiology, Douglas Research Centre, Montréal, QC, Canada
| | - Nicolas Cermakian
- Laboratory of Molecular Chronobiology, Douglas Research Centre, Montréal, QC, Canada.,Department of Psychiatry, McGill University, Montréal, QC, Canada
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94
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Uriz-Huarte A, Date A, Ang H, Ali S, Brady HJM, Fuchter MJ. The transcriptional repressor REV-ERB as a novel target for disease. Bioorg Med Chem Lett 2020; 30:127395. [PMID: 32738989 DOI: 10.1016/j.bmcl.2020.127395] [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] [Received: 06/01/2020] [Revised: 07/03/2020] [Accepted: 07/04/2020] [Indexed: 12/16/2022]
Abstract
REV-ERB is a member of the nuclear receptor superfamily of transcription factors involved in the regulation of many physiological processes, from circadian rhythm, to immune function and metabolism. Accordingly, REV-ERB has been considered as a promising, but difficult drug target for the treatment of numerous diseases. Here, we concisely review current understanding of the function of REV-ERB, modulation by endogenous factors and synthetic ligands, and the involvement of REV-ERB in select human diseases. Particular focus is placed on the medicinal chemistry of synthetic REV-ERB ligands, which demonstrates the need for higher quality ligands to aid in robust validation of this exciting target.
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Affiliation(s)
- Amaia Uriz-Huarte
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, UK
| | - Amrita Date
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, UK
| | - Heather Ang
- Department of Life Sciences, Imperial College London, South Kensington, London SW7 2AZ, UK
| | - Simak Ali
- Division of Cancer, Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital Campus, London W12 0NN, UK
| | - Hugh J M Brady
- Department of Life Sciences, Imperial College London, South Kensington, London SW7 2AZ, UK
| | - Matthew J Fuchter
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, UK.
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95
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Ryan S, Cummins EP, Farre R, Gileles-Hillel A, Jun JC, Oster H, Pepin JL, Ray DW, Reutrakul S, Sanchez-de-la-Torre M, Tamisier R, Almendros I. Understanding the pathophysiological mechanisms of cardiometabolic complications in obstructive sleep apnoea: towards personalised treatment approaches. Eur Respir J 2020; 56:13993003.02295-2019. [PMID: 32265303 DOI: 10.1183/13993003.02295-2019] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/15/2020] [Indexed: 12/19/2022]
Abstract
In January 2019, a European Respiratory Society research seminar entitled "Targeting the detrimental effects of sleep disturbances and disorders" was held in Dublin, Ireland. It provided the opportunity to critically review the current evidence of pathophysiological responses of sleep disturbances, such as sleep deprivation, sleep fragmentation or circadian misalignment and of abnormalities in physiological gases such as oxygen and carbon dioxide, which occur frequently in respiratory conditions during sleep. A specific emphasis of the seminar was placed on the evaluation of the current state of knowledge of the pathophysiology of cardiovascular and metabolic diseases in obstructive sleep apnoea (OSA). Identification of the detailed mechanisms of these processes is of major importance to the field and this seminar offered an ideal platform to exchange knowledge, and to discuss pitfalls of current models and the design of future collaborative studies. In addition, we debated the limitations of current treatment strategies for cardiometabolic complications in OSA and discussed potentially valuable alternative approaches.
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Affiliation(s)
- Silke Ryan
- Pulmonary and Sleep Disorders Unit, St Vincent's University Hospital, Dublin, Ireland .,School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Eoin P Cummins
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Ramon Farre
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBAPS, and CIBER Enfermedades Respiratorias, Barcelona, Spain
| | - Alex Gileles-Hillel
- Pediatric Pulmonology and Sleep Unit, Dept of Pediatrics, and The Wohl Institute for Translational Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Jonathan C Jun
- Pulmonary and Critical Care Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Henrik Oster
- Institute of Neurobiology, University of Lübeck, Lübeck, Germany
| | | | - David W Ray
- NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK.,Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - Sirimon Reutrakul
- Division of Endocrinology, Diabetes, and Metabolism, Dept of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Manuel Sanchez-de-la-Torre
- Group of Precision Medicine in Chronic Diseases, Hospital Arnau de Vilanova-Santa Maria, IRBLleida, Lleida, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Renaud Tamisier
- HP2 INSERM U1042, Université Grenoble Alpes, Grenoble, France
| | - Isaac Almendros
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona-IDIBAPS, and CIBER Enfermedades Respiratorias, Barcelona, Spain
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96
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Timmons GA, O'Siorain JR, Kennedy OD, Curtis AM, Early JO. Innate Rhythms: Clocks at the Center of Monocyte and Macrophage Function. Front Immunol 2020; 11:1743. [PMID: 32849621 PMCID: PMC7417365 DOI: 10.3389/fimmu.2020.01743] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/30/2020] [Indexed: 12/18/2022] Open
Abstract
The circadian cycle allows organisms to track external time of day and predict/respond to changes in the external environment. In higher order organisms, circadian rhythmicity is a central feature of innate and adaptive immunity. We focus on the role of the molecular clock and circadian rhythmicity specifically in monocytes and macrophages of the innate immune system. These cells display rhythmicity in their internal functions, such as metabolism and inflammatory mediator production as well as their external functions in pathogen sensing, phagocytosis, and migration. These inflammatory mediators are of clinical interest as many are therapeutic targets in inflammatory disease such as cardiovascular disease, diabetes, and rheumatoid arthritis. Moreover, circadian rhythm disruption is closely linked with increased prevalence of these conditions. Therefore, understanding the mechanisms by which circadian disruption affects monocyte/macrophage function will provide insights into novel therapeutic opportunities for these chronic inflammatory diseases.
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Affiliation(s)
- George A Timmons
- School of Pharmacy and Biomolecular Sciences and Tissue Engineering Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - James R O'Siorain
- School of Pharmacy and Biomolecular Sciences and Tissue Engineering Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Oran D Kennedy
- Department of Anatomy and Regenerative Medicine and Tissue Engineering Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Annie M Curtis
- School of Pharmacy and Biomolecular Sciences and Tissue Engineering Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - James O Early
- Department of Anatomy and Regenerative Medicine and Tissue Engineering Research Group, Royal College of Surgeons in Ireland, Dublin, Ireland
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97
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De Bosscher K, Desmet SJ, Clarisse D, Estébanez-Perpiña E, Brunsveld L. Nuclear receptor crosstalk - defining the mechanisms for therapeutic innovation. Nat Rev Endocrinol 2020; 16:363-377. [PMID: 32303708 DOI: 10.1038/s41574-020-0349-5] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/12/2020] [Indexed: 02/06/2023]
Abstract
Nuclear receptor crosstalk can be defined as the interplay between different nuclear receptors or between their overlapping signalling pathways. A subset of nuclear receptors (such as PPARs and RARs) engage in the formation of well-characterized 'typical' heterodimers with RXR. 'Atypical' heterodimers (such as GR with PPARs, or PPAR with ERR) might form a novel class of physical complexes that might be more transient in nature. These heterodimers might harbour strong transcriptional flexibility, with no strict need for DNA binding of both partners. Direct crosstalk could stem from a pairwise physical association between atypical nuclear receptor heterodimers, either via pre-existing interaction pairs or via interactions that are newly induced with small molecules; such crosstalk might constitute an uncharted space to target nuclear receptor physiological and/or pathophysiological actions. In this Review, we discuss the emerging aspects of crosstalk in the nuclear receptor field and present various mechanistic crosstalk modes with examples that support applicability of the atypical heterodimer concept. Stabilization or disruption, in a context-dependent or cell type-dependent manner, of these more transient heterodimers is expected to fuel unprecedented translational approaches to yield novel therapeutic agents to treat major human diseases with higher precision.
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Affiliation(s)
- Karolien De Bosscher
- Translational Nuclear Receptor Research, VIB Center for Medical Biotechnology, UGent Department of Biomolecular Medicine, Gent, Belgium.
| | - Sofie J Desmet
- Translational Nuclear Receptor Research, VIB Center for Medical Biotechnology, UGent Department of Biomolecular Medicine, Gent, Belgium
| | - Dorien Clarisse
- Translational Nuclear Receptor Research, VIB Center for Medical Biotechnology, UGent Department of Biomolecular Medicine, Gent, Belgium
| | - Eva Estébanez-Perpiña
- Laboratory of Structural Biology, Department of Biochemistry and Molecular Biomedicine, Institute of Biomedicine (IBUB) of the University of Barcelona (UB), Barcelona, Spain
| | - Luc Brunsveld
- Laboratory of Chemical Biology, Department of Biomedical Engineering and Institute for Complex Molecular Systems, Technische Universiteit Eindhoven, Eindhoven, Netherlands
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98
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Nakao A. Circadian Regulation of the Biology of Allergic Disease: Clock Disruption Can Promote Allergy. Front Immunol 2020; 11:1237. [PMID: 32595651 PMCID: PMC7304491 DOI: 10.3389/fimmu.2020.01237] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/18/2020] [Indexed: 12/19/2022] Open
Abstract
Allergic diseases such as allergic rhinitis, asthma, atopic dermatitis, and food allergy are characterized by epithelial barrier dysfunction and deregulated immune responses. Components of the circadian clock interact with critical elements of epithelial barrier function and immune responses, and regulate the biological processes on a 24-h cycle at steady state. This may represent an anticipatory defense response to day-night fluctuation of attack by noxious stimuli such as pathogens in the environment. This review will summarize clock control of epithelial barrier function and immune responses associated with allergic disease and offer novel insights and opportunities into how clock dysfunction impacts allergic disease. Importantly, perturbation of normal clock activity by genetic and environmental disturbances, such as chronic light cycle perturbations or irregular eating habits, deregulates epithelial barrier function and immune responses. This implies that the circadian clock is strongly linked to the fundamental biology of allergic disease, and that clock disruption can precipitate allergic disease by altering the epithelial barrier and immune functions. Given that contemporary lifestyles often involve chronic circadian disruptions such as shift work, we propose that lifestyle or therapeutic interventions that align the endogenous circadian clock with environmental cycles should be a part of the efforts to prevent or treat allergic disease in modern society.
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Affiliation(s)
- Atsuhito Nakao
- Department of Immunology, Faculty of Medicine, University of Yamanashi, Kofu, Japan.,Atopy Research Center, Juntendo University School of Medicine, Tokyo, Japan
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99
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Crespo I, Fernández-Palanca P, San-Miguel B, Álvarez M, González-Gallego J, Tuñón MJ. Melatonin modulates mitophagy, innate immunity and circadian clocks in a model of viral-induced fulminant hepatic failure. J Cell Mol Med 2020; 24:7625-7636. [PMID: 32468679 PMCID: PMC7339179 DOI: 10.1111/jcmm.15398] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/23/2020] [Accepted: 04/27/2020] [Indexed: 12/12/2022] Open
Abstract
The haemorrhagic disease virus (RHDV) is a non‐cultivable virus that promotes in rabbits an acute disease which accomplishes many characteristics of an animal model of fulminant hepatic failure (FHF). Beneficial effects of melatonin have been reported in RHDV‐infected rabbits. This study investigated whether protection against viral‐derived liver injury by melatonin is associated with modulation of mitophagy, innate immunity and clock signalling. Rabbits were experimentally infected with 2 × 104 haemagglutination units of a RHDV isolate and killed at 18, 24 and 30 hours after infection (hpi). Melatonin (20 mg/kg body weight ip) was administered at 0, 12 and 24 hpi. RHDV infection induced mitophagy, with the presence of a high number of mitophagosomes in hepatocytes and increased expression of mitophagy genes. Greater expression of main innate immune intermediaries and inflammasome components was also found in livers with RHDV‐induced FHF. Both mitophagy and innate immunity activation was significantly hindered by melatonin. FHF induction also elicited an early dysregulation in clock signalling, and melatonin was able to prevent such circadian disruption. Our study discloses novel molecular routes contributing to RHDV‐induced damage progression and supports the potential of melatonin as a promising therapeutic option in human FHF.
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Affiliation(s)
- Irene Crespo
- Institute of Biomedicine (IBIOMED), University of León, León, Spain.,Department of Functional Biology, University of Oviedo, Oviedo, Spain
| | | | | | | | - Javier González-Gallego
- Institute of Biomedicine (IBIOMED), University of León, León, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), León, Spain
| | - María Jesús Tuñón
- Institute of Biomedicine (IBIOMED), University of León, León, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), León, Spain
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100
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Hand LE, Gray KJ, Dickson SH, Simpkins DA, Ray DW, Konkel JE, Hepworth MR, Gibbs JE. Regulatory T cells confer a circadian signature on inflammatory arthritis. Nat Commun 2020; 11:1658. [PMID: 32245954 PMCID: PMC7125185 DOI: 10.1038/s41467-020-15525-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 02/26/2020] [Indexed: 12/12/2022] Open
Abstract
The circadian clock is an intrinsic oscillator that imparts 24 h rhythms on immunity. This clock drives rhythmic repression of inflammatory arthritis during the night in mice, but mechanisms underlying this effect are not clear. Here we show that the amplitude of intrinsic oscillators within macrophages and neutrophils is limited by the chronic inflammatory environment, suggesting that rhythms in inflammatory mediators might not be a direct consequence of intrinsic clocks. Anti-inflammatory regulatory T (Treg) cells within the joints show diurnal variation, with numbers peaking during the nadir of inflammation. Furthermore, the anti-inflammatory action of Treg cells on innate immune cells contributes to the night-time repression of inflammation. Treg cells do not seem to have intrinsic circadian oscillators, suggesting that rhythmic function might be a consequence of external signals. These data support a model in which non-rhythmic Treg cells are driven to rhythmic activity by systemic signals to confer a circadian signature to chronic arthritis.
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Affiliation(s)
- L E Hand
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - K J Gray
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - S H Dickson
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - D A Simpkins
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - D W Ray
- NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK and Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - J E Konkel
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Oxford Road, Manchester, UK
| | - M R Hepworth
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Oxford Road, Manchester, UK
| | - J E Gibbs
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK.
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Oxford Road, Manchester, UK.
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