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Alibhai FJ, Li RK. Rejuvenation of the Aging Heart: Molecular Determinants and Applications. Can J Cardiol 2024; 40:1394-1411. [PMID: 38460612 DOI: 10.1016/j.cjca.2024.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 02/20/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024] Open
Abstract
In Canada and worldwide, the elderly population (ie, individuals > 65 years of age) is increasing disproportionately relative to the total population. This is expected to have a substantial impact on the health care system, as increased aged is associated with a greater incidence of chronic noncommunicable diseases. Within the elderly population, cardiovascular disease is a leading cause of death, therefore developing therapies that can prevent or slow disease progression in this group is highly desirable. Historically, aging research has focused on the development of anti-aging therapies that are implemented early in life and slow the age-dependent decline in cell and organ function. However, accumulating evidence supports that late-in-life therapies can also benefit the aged cardiovascular system by limiting age-dependent functional decline. Moreover, recent studies have demonstrated that rejuvenation (ie, reverting cellular function to that of a younger phenotype) of the already aged cardiovascular system is possible, opening new avenues to develop therapies for older individuals. In this review, we first provide an overview of the functional changes that occur in the cardiomyocyte with aging and how this contributes to the age-dependent decline in heart function. We then discuss the various anti-aging and rejuvenation strategies that have been pursued to improve the function of the aged cardiomyocyte, with a focus on therapies implemented late in life. These strategies include 1) established systemic approaches (caloric restriction, exercise), 2) pharmacologic approaches (mTOR, AMPK, SIRT1, and autophagy-targeting molecules), and 3) emerging rejuvenation approaches (partial reprogramming, parabiosis/modulation of circulating factors, targeting endogenous stem cell populations, and senotherapeutics). Collectively, these studies demonstrate the exciting potential and limitations of current rejuvenation strategies and highlight future areas of investigation that will contribute to the development of rejuvenation therapies for the aged heart.
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Affiliation(s)
- Faisal J Alibhai
- Toronto General Research Hospital Institute, University Health Network, Toronto, Ontario, Canada
| | - Ren-Ke Li
- Toronto General Research Hospital Institute, University Health Network, Toronto, Ontario, Canada; Department of Surgery, Division of Cardiovascular Surgery, University of Toronto, Toronto, Ontario, Canada.
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Ghosh R, Fatahian AN, Rouzbehani OMT, Hathaway MA, Mosleh T, Vinod V, Vowles S, Stephens SL, Chung SLD, Cao ID, Jonnavithula A, Symons JD, Boudina S. Sequestosome 1 (p62) mitigates hypoxia-induced cardiac dysfunction by stabilizing hypoxia-inducible factor 1α and nuclear factor erythroid 2-related factor 2. Cardiovasc Res 2024; 120:531-547. [PMID: 38332738 PMCID: PMC11060490 DOI: 10.1093/cvr/cvae023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 09/11/2023] [Accepted: 11/03/2023] [Indexed: 02/10/2024] Open
Abstract
AIMS Heart failure due to ischaemic heart disease (IHD) is a leading cause of mortality worldwide. A major contributing factor to IHD-induced cardiac damage is hypoxia. Sequestosome 1 (p62) is a multi-functional adaptor protein with pleiotropic roles in autophagy, proteostasis, inflammation, and cancer. Despite abundant expression in cardiomyocytes, the role of p62 in cardiac physiology is not well understood. We hypothesized that cardiomyocyte-specific p62 deletion evokes hypoxia-induced cardiac pathology by impairing hypoxia-inducible factor 1α (Hif-1α) and nuclear factor erythroid 2-related factor 2 (Nrf2) signalling. METHODS AND RESULTS Adult mice with germline deletion of cardiomyocyte p62 exhibited mild cardiac dysfunction under normoxic conditions. Transcriptomic analyses revealed a selective impairment in Nrf2 target genes in the hearts from these mice. Demonstrating the functional importance of this adaptor protein, adult mice with inducible depletion of cardiomyocyte p62 displayed hypoxia-induced contractile dysfunction, oxidative stress, and cell death. Mechanistically, p62-depleted hearts exhibit impaired Hif-1α and Nrf2 transcriptional activity. Because findings from these two murine models suggested a cardioprotective role for p62, mechanisms were evaluated using H9c2 cardiomyoblasts. Loss of p62 in H9c2 cells exposed to hypoxia reduced Hif-1α and Nrf2 protein levels. Further, the lack of p62 decreased Nrf2 protein expression, nuclear translocation, and transcriptional activity. Repressed Nrf2 activity associated with heightened Nrf2-Keap1 co-localization in p62-deficient cells, which was concurrent with increased Nrf2 ubiquitination facilitated by the E3 ligase Cullin 3, followed by proteasomal-mediated degradation. Substantiating our results, a gain of p62 in H9c2 cells stabilized Nrf2 and increased the transcriptional activity of Nrf2 downstream targets. CONCLUSION Cardiac p62 mitigates hypoxia-induced cardiac dysfunction by stabilizing Hif-1α and Nrf2.
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Affiliation(s)
- Rajeshwary Ghosh
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
- Molecular Medicine Program (U2M2), University of Utah, Salt Lake City, UT 84112, USA
| | - Amir Nima Fatahian
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Omid M T Rouzbehani
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Marissa A Hathaway
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Tariq Mosleh
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Vishaka Vinod
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Sidney Vowles
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Sophie L Stephens
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Siu-Lai Desmond Chung
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Isaac D Cao
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - Anila Jonnavithula
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
| | - J David Symons
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
- Molecular Medicine Program (U2M2), University of Utah, Salt Lake City, UT 84112, USA
| | - Sihem Boudina
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT 84112, USA
- Molecular Medicine Program (U2M2), University of Utah, Salt Lake City, UT 84112, USA
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Jonnavithula A, Tandar M, Umar M, Orton SN, Woodrum MC, Mookherjee S, Boudina S, Symons JD, Ghosh R. A Fluorogenic-Based Assay to Measure Chaperone-Mediated Autophagic Activity in Cells and Tissues. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.14.571785. [PMID: 38168260 PMCID: PMC10760084 DOI: 10.1101/2023.12.14.571785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Objective Pathologies including cardiovascular diseases, cancer, and neurological disorders are caused by the accumulation of misfolded / damaged proteins. Intracellular protein degradation mechanisms play a critical role in the clearance of these disease-causing proteins. Chaperone mediated autophagy (CMA) is a protein degradation pathway that employs chaperones to bind proteins, bearing a unique KFERQ-like motif, for delivery to a CMA-specific Lysosome Associated Membrane Protein 2a (LAMP2a) receptor for lysosomal degradation. To date, steady-state CMA function has been assessed by measuring LAMP2A protein expression. However, this does not provide information regarding CMA degradation activity. To fill this dearth of tools / assays to measure CMA activity, we generated a CMA-specific fluorogenic substrate assay. Methods A KFERQ-AMC [Lys-Phe-Asp-Arg-Gln-AMC(7-amino-4-methylcou-marin)] fluorogenic CMA substrate was synthesized from Solid-Phase Peptide Synthesis. KFERQ-AMC, when cleaved via lysosomal hydrolysis, causes AMC to release and fluoresce (Excitation:355 nm, Emission:460 nm). Using an inhibitor of lysosomal proteases, i.e., E64D [L-trans-Epoxy-succinyl-leucylamido(4-guanidino)butane)], responsible for cleaving CMA substrates, the actual CMA activity was determined. Essentially, CMA activity = (substrate) fluorescence - (substrate+E64D) fluorescence . To confirm specificity of the KFERQ sequence for CMA, negative control peptides were used. Results Heart, liver, and kidney lysates containing intact lysosomes were obtained from 4-month-old adult male mice. First, lysates incubated with KFERQ-AMC displayed a time dependent (0-5 hour) increase in AMC fluorescence vs. lysates incubated with negative control peptides. These data validate the specificity of KFERQ for CMA. Of note, liver exhibited the highest CMA (6-fold; p<0.05) > kidney (2.4-fold) > heart (0.4-fold) at 5-hours. Second, E64D prevented KFERQ-AMC degradation, substantiating that KFERQ-AMC is degraded via lysosomes. Third, cleavage of KFERQ-AMC and resulting AMC fluorescence was inhibited in Human embryonic kidney (HEK) cells and H9c2 cardiac cells transfected with Lamp2a vs. control siRNA. Further, enhancing CMA using Lamp2a adenovirus upregulated KFERQ degradation. These data suggest that LAMP2A is required for KFERQ degradation. Conclusion. We have generated a novel assay for measuring CMA activity in cells and tissues in a variety of experimental contexts. Abstract Figure
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Abdellatif M, Rainer PP, Sedej S, Kroemer G. Hallmarks of cardiovascular ageing. Nat Rev Cardiol 2023; 20:754-777. [PMID: 37193857 DOI: 10.1038/s41569-023-00881-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/21/2023] [Indexed: 05/18/2023]
Abstract
Normal circulatory function is a key determinant of disease-free life expectancy (healthspan). Indeed, pathologies affecting the cardiovascular system, which are growing in prevalence, are the leading cause of global morbidity, disability and mortality, whereas the maintenance of cardiovascular health is necessary to promote both organismal healthspan and lifespan. Therefore, cardiovascular ageing might precede or even underlie body-wide, age-related health deterioration. In this Review, we posit that eight molecular hallmarks are common denominators in cardiovascular ageing, namely disabled macroautophagy, loss of proteostasis, genomic instability (in particular, clonal haematopoiesis of indeterminate potential), epigenetic alterations, mitochondrial dysfunction, cell senescence, dysregulated neurohormonal signalling and inflammation. We also propose a hierarchical order that distinguishes primary (upstream) from antagonistic and integrative (downstream) hallmarks of cardiovascular ageing. Finally, we discuss how targeting each of the eight hallmarks might be therapeutically exploited to attenuate residual cardiovascular risk in older individuals.
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Affiliation(s)
- Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria.
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.
- BioTechMed Graz, Graz, Austria.
| | - Peter P Rainer
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Equipe labellisée par la Ligue contre le cancer, Université de Paris, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.
- Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.
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Gouveia M, Schmidt C, Basilio PG, Aveiro SS, Domingues P, Xia K, Colón W, Vitorino R, Ferreira R, Santos M, Vieira SI, Ribeiro F. Exercise training decreases the load and changes the content of circulating SDS-resistant protein aggregates in patients with heart failure with reduced ejection fraction. Mol Cell Biochem 2023:10.1007/s11010-023-04884-z. [PMID: 37902886 DOI: 10.1007/s11010-023-04884-z] [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: 07/25/2023] [Accepted: 10/15/2023] [Indexed: 11/01/2023]
Abstract
BACKGROUND Heart failure (HF) often disrupts the protein quality control (PQC) system leading to protein aggregate accumulation. Evidence from tissue biopsies showed that exercise restores PQC system in HF; however, little is known about its effects on plasma proteostasis. AIM To determine the effects of exercise training on the load and composition of plasma SDS-resistant protein aggregates (SRA) in patients with HF with reduced ejection fraction (HFrEF). METHODS Eighteen patients with HFrEF (age: 63.4 ± 6.5 years; LVEF: 33.4 ± 11.6%) participated in a 12-week combined (aerobic plus resistance) exercise program (60 min/session, twice per week). The load and content of circulating SRA were assessed using D2D SDS-PAGE and mass spectrometry. Cardiorespiratory fitness, quality of life, and circulating levels of high-sensitive C-reactive protein, N-terminal pro-B-type natriuretic peptide (NT-proBNP), haptoglobin and ficolin-3, were also evaluated at baseline and after the exercise program. RESULTS The exercise program decreased the plasma SRA load (% SRA/total protein: 38.0 ± 8.9 to 36.1 ± 9.7%, p = 0.018; % SRA/soluble fraction: 64.3 ± 27.1 to 59.8 ± 27.7%, p = 0.003). Plasma SRA of HFrEF patients comprised 31 proteins, with α-2-macroglobulin and haptoglobin as the most abundant ones. The exercise training significantly increased haptoglobin plasma levels (1.03 ± 0.40 to 1.11 ± 0.46, p = 0.031), while decreasing its abundance in SRA (1.83 ± 0.54 × 1011 to 1.51 ± 0.59 × 1011, p = 0.049). Cardiorespiratory fitness [16.4(5.9) to 19.0(5.2) ml/kg/min, p = 0.002], quality of life, and circulating NT-proBNP [720.0(850.0) to 587.0(847.3) pg/mL, p = 0.048] levels, also improved after the exercise program. CONCLUSION Exercise training reduced the plasma SRA load and enhanced PQC, potentially via haptoglobin-mediated action, while improving cardiorespiratory fitness and quality of life of patients with HFrEF.
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Affiliation(s)
- Marisol Gouveia
- Department of Medical Sciences, iBiMED - Institute of Biomedicine, University of Aveiro, Building 30, Agras do Crasto - Campus Universitário de Santiago, Aveiro, 3810-193, Portugal.
| | - Cristine Schmidt
- Surgery and Physiology Department, Faculty of Medicine, University of Porto, Porto, Portugal
- Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Priscilla Gois Basilio
- Research Centre in Physical Activity, Health and Leisure, Faculty of Sport, University of Porto, Porto, Portugal
| | - Susana S Aveiro
- Mass Spectrometry Centre, Department of Chemistry, LAQV REQUIMTE, University of Aveiro, Aveiro, Portugal
- GreenCoLab - Green Ocean Association, University of Algarve, Faro, Portugal
| | - Pedro Domingues
- Mass Spectrometry Centre, Department of Chemistry, LAQV REQUIMTE, University of Aveiro, Aveiro, Portugal
| | - Ke Xia
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, USA
- Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Wilfredo Colón
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY, USA
- Centre for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Rui Vitorino
- Department of Medical Sciences, iBiMED - Institute of Biomedicine, University of Aveiro, Building 30, Agras do Crasto - Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
- Surgery and Physiology Department, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Rita Ferreira
- Department of Chemistry, QOPNA & LAQV-REQUIMTE, University of Aveiro, Aveiro, Portugal
| | - Mário Santos
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
- Serviço de Cardiologia, Hospital Santo António, Centro Hospitalar Universitário do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, UMIB, University of Porto, Porto, Portugal
| | - Sandra I Vieira
- Department of Medical Sciences, iBiMED - Institute of Biomedicine, University of Aveiro, Building 30, Agras do Crasto - Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
| | - Fernando Ribeiro
- School of Health Sciences, iBiMED - Institute of Biomedicine, University of Aveiro, Aveiro, Portugal
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Yee EM, Hauser CT, Petrocelli JJ, de Hart NMMP, Ferrara PJ, Bombyck P, Fennel ZJ, van Onselen L, Mookerjee S, Funai K, Symons JD, Drummond MJ. Treadmill training does not enhance skeletal muscle recovery following disuse atrophy in older male mice. Front Physiol 2023; 14:1263500. [PMID: 37942230 PMCID: PMC10628510 DOI: 10.3389/fphys.2023.1263500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/02/2023] [Indexed: 11/10/2023] Open
Abstract
Introduction: A hallmark of aging is poor muscle recovery following disuse atrophy. Efficacious strategies to enhance muscle recovery following disuse atrophy in aging are non-existent. Prior exercise training could result in favorable muscle morphological and cellular adaptations that may promote muscle recovery in aging. Here, we characterized the impact of exercise training on skeletal muscle inflammatory and metabolic profiles and cellular remodeling and function, together with femoral artery reactivity prior to and following recovery from disuse atrophy in aged male mice. We hypothesized that 12 weeks of treadmill training in aged male mice would improve skeletal muscle cellular remodeling at baseline and during recovery from disuse atrophy, resulting in improved muscle regrowth. Methods: Physical performance, ex vivo muscle and vascular function, tissue and organ mass, hindlimb muscle cellular remodeling (macrophage, satellite cell, capillary, myofiber size, and fibrosis), and proteolytic, inflammatory, and metabolic muscle transcripts were evaluated in aged exercise-trained and sedentary mice. Results: We found that at baseline following exercise training (vs. sedentary mice), exercise capacity and physical function increased, fat mass decreased, and endothelial function improved. However, exercise training did not alter tibialis anterior or gastrocnemius muscle transcriptional profile, macrophage, satellite cell, capillarity or collagen content, or myofiber size and only tended to increase tibialis mass during recovery from disuse atrophy. Conclusion: While exercise training in old male mice improved endothelial function, physical performance, and whole-body tissue composition as anticipated, 12 weeks of treadmill training had limited impact on skeletal muscle remodeling at baseline or in response to recovery following disuse atrophy.
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Affiliation(s)
- Elena M. Yee
- Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, United States
| | - Carson T. Hauser
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, United States
| | - Jonathan J. Petrocelli
- Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, United States
| | - Naomi M. M. P. de Hart
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, United States
| | - Patrick J. Ferrara
- Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, United States
| | - Princess Bombyck
- Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, United States
| | - Zachary J. Fennel
- Molecular Medicine Program, University of Utah, Salt Lake City, UT, United States
| | - Lisha van Onselen
- Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, United States
| | - Sohom Mookerjee
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, United States
| | - Katsuhiko Funai
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, United States
- Molecular Medicine Program, University of Utah, Salt Lake City, UT, United States
| | - J. David Symons
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, United States
- Molecular Medicine Program, University of Utah, Salt Lake City, UT, United States
| | - Micah J. Drummond
- Department of Physical Therapy and Athletic Training, University of Utah, Salt Lake City, UT, United States
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, United States
- Molecular Medicine Program, University of Utah, Salt Lake City, UT, United States
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Li J, Richmond B, Cluntun AA, Bia R, Walsh MA, Shaw K, Symons JD, Franklin S, Rutter J, Funai K, Shaw RM, Hong T. Cardiac gene therapy treats diabetic cardiomyopathy and lowers blood glucose. JCI Insight 2023; 8:e166713. [PMID: 37639557 PMCID: PMC10561727 DOI: 10.1172/jci.insight.166713] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 08/15/2023] [Indexed: 08/31/2023] Open
Abstract
Diabetic cardiomyopathy, an increasingly global epidemic and a major cause of heart failure with preserved ejection fraction (HFpEF), is associated with hyperglycemia, insulin resistance, and intracardiomyocyte calcium mishandling. Here we identify that, in db/db mice with type 2 diabetes-induced HFpEF, abnormal remodeling of cardiomyocyte transverse-tubule microdomains occurs with downregulation of the membrane scaffolding protein cardiac bridging integrator 1 (cBIN1). Transduction of cBIN1 by AAV9 gene therapy can restore transverse-tubule microdomains to normalize intracellular distribution of calcium-handling proteins and, surprisingly, glucose transporter 4 (GLUT4). Cardiac proteomics revealed that AAV9-cBIN1 normalized components of calcium handling and GLUT4 translocation machineries. Functional studies further identified that AAV9-cBIN1 normalized insulin-dependent glucose uptake in diabetic cardiomyocytes. Phenotypically, AAV9-cBIN1 rescued cardiac lusitropy, improved exercise intolerance, and ameliorated hyperglycemia in diabetic mice. Restoration of transverse-tubule microdomains can improve cardiac function in the setting of diabetic cardiomyopathy and can also improve systemic glycemic control.
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Affiliation(s)
- Jing Li
- Department of Pharmacology and Toxicology, College of Pharmacy
- Nora Eccles Harrison Cardiovascular Research and Training Institute
| | | | | | - Ryan Bia
- Nora Eccles Harrison Cardiovascular Research and Training Institute
| | - Maureen A. Walsh
- College of Health, Department of Nutrition and Integrative Physiology, Program in Molecular Medicine
| | - Kikuyo Shaw
- Department of Pharmacology and Toxicology, College of Pharmacy
| | - J. David Symons
- College of Health, Department of Nutrition and Integrative Physiology, Program in Molecular Medicine
- Diabetes & Metabolism Research Center, and
| | - Sarah Franklin
- Nora Eccles Harrison Cardiovascular Research and Training Institute
| | - Jared Rutter
- Department of Biochemistry
- College of Health, Department of Nutrition and Integrative Physiology, Program in Molecular Medicine
- Diabetes & Metabolism Research Center, and
- Howard Hughes Medical Institute, University of Utah, Salt Lake City, Utah, USA
| | - Katsuhiko Funai
- College of Health, Department of Nutrition and Integrative Physiology, Program in Molecular Medicine
- Diabetes & Metabolism Research Center, and
| | - Robin M. Shaw
- Nora Eccles Harrison Cardiovascular Research and Training Institute
| | - TingTing Hong
- Department of Pharmacology and Toxicology, College of Pharmacy
- Nora Eccles Harrison Cardiovascular Research and Training Institute
- Howard Hughes Medical Institute, University of Utah, Salt Lake City, Utah, USA
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Kramer RJ, Fatahian AN, Chan A, Mortenson J, Osher J, Sun B, Parker LE, Rosamilia MB, Potter KB, Moore K, Atkins SL, Rosenfeld JA, Birjiniuk A, Jones E, Howard TS, Kim JJ, Scott DA, Lalani S, Rouzbehani OMT, Kaplan S, Hathaway MA, Cohen JL, Asaki SY, Martinez HR, Boudina S, Landstrom AP. PRDM16 Deletion Is Associated With Sex-dependent Cardiomyopathy and Cardiac Mortality: A Translational, Multi-Institutional Cohort Study. CIRCULATION. GENOMIC AND PRECISION MEDICINE 2023; 16:390-400. [PMID: 37395136 PMCID: PMC10528350 DOI: 10.1161/circgen.122.003912] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 05/10/2023] [Indexed: 07/04/2023]
Abstract
BACKGROUND 1p36 deletion syndrome can predispose to pediatric-onset cardiomyopathy. Deletion breakpoints are variable and may delete the transcription factor PRDM16. Early studies suggest that deletion of PRDM16 may underlie cardiomyopathy in patients with 1p36 deletion; however, the prognostic impact of PRDM16 loss is unknown. METHODS This retrospective cohort included subjects with 1p36 deletion syndrome from 4 hospitals. Prevalence of cardiomyopathy and freedom from death, cardiac transplantation, or ventricular assist device were analyzed. A systematic review cohort was derived for further analysis. A cardiac-specific Prdm16 knockout mouse (Prdm16 conditional knockout) was generated. Echocardiography was performed at 4 and 6 to 7 months. Histology staining and qPCR were performed at 7 months to assess fibrosis. RESULTS The retrospective cohort included 71 patients. Among individuals with PRDM16 deleted, 34.5% developed cardiomyopathy versus 7.7% of individuals with PRDM16 not deleted (P=0.1). In the combined retrospective and systematic review cohort (n=134), PRDM16 deletion-associated cardiomyopathy risk was recapitulated and significant (29.1% versus 10.8%, P=0.03). PRDM16 deletion was associated with increased risk of death, cardiac transplant, or ventricular assist device (P=0.04). Among those PRDM16 deleted, 34.5% of females developed cardiomyopathy versus 16.7% of their male counterparts (P=0.2). We find sex-specific differences in the incidence and the severity of contractile dysfunction and fibrosis in female Prdm16 conditional knockout mice. Further, female Prdm16 conditional knockout mice demonstrate significantly elevated risk of mortality (P=0.0003). CONCLUSIONS PRDM16 deletion is associated with a significantly increased risk of cardiomyopathy and cardiac mortality. Prdm16 conditional knockout mice develop cardiomyopathy in a sex-biased way. Patients with PRDM16 deletion should be assessed for cardiac disease.
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Affiliation(s)
- Ryan J. Kramer
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Amir Nima Fatahian
- Dept of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT
| | - Alice Chan
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Jeffery Mortenson
- Dept of Pediatrics, Division of Pediatric Cardiology, University of Tennessee Health Science Center, Memphis, TN
| | - Jennifer Osher
- Dept of Pediatrics, Division of Pediatric Cardiology, University of Tennessee Health Science Center, Memphis, TN
| | - Bo Sun
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Lauren E. Parker
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Michael B. Rosamilia
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Kyra B. Potter
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Kaila Moore
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Sage L. Atkins
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
| | - Jill A. Rosenfeld
- Baylor Genetic Laboratories, Baylor College of Medicine, Houston, TX
- Dept of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX
| | - Alona Birjiniuk
- Dept of Pediatrics, Division of Pediatric Cardiology, Northwestern Feinberg School of Medicine, Chicago, IL
| | - Edward Jones
- Dept of Pediatrics, Section of Pediatric Cardiology, Baylor College of Medicine, Houston, TX
| | - Taylor S. Howard
- Dept of Pediatrics, Section of Pediatric Cardiology, Baylor College of Medicine, Houston, TX
| | - Jeffrey J. Kim
- Dept of Pediatrics, Section of Pediatric Cardiology, Baylor College of Medicine, Houston, TX
| | - Daryl A. Scott
- Dept of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX
| | - Seema Lalani
- Dept of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX
| | - Omid MT. Rouzbehani
- Dept of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT
| | - Samantha Kaplan
- Medical Center Library & Archives, Duke University School of Medicine, Durham, NC
| | - Marissa A. Hathaway
- Dept of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT
| | - Jennifer L. Cohen
- Dept of Pediatrics, Division of Medical Genetics, Duke University School of Medicine, Durham, NC
| | - S. Yukiko Asaki
- Dept of Pediatrics, Division of Pediatric Cardiology, University of Utah, Salt Lake City, UT
| | - Hugo R. Martinez
- Dept of Pediatrics, Division of Pediatric Cardiology, University of Tennessee Health Science Center, Memphis, TN
| | - Sihem Boudina
- Dept of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT
| | - Andrew P. Landstrom
- Dept of Pediatrics, Division of Pediatric Cardiology, Duke University School of Medicine, Durham, NC
- Dept of Cell Biology, Duke University School of Medicine, Durham, NC
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9
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Cho JM, Park SK, Kwon OS, Taylor La Salle D, Cerbie J, Fermoyle CC, Morgan D, Nelson A, Bledsoe A, Bharath LP, Tandar M, Kunapuli SP, Richardson RS, Anandh Babu PV, Mookherjee S, Kishore BK, Wang F, Yang T, Boudina S, Trinity JD, Symons JD. Activating P2Y1 receptors improves function in arteries with repressed autophagy. Cardiovasc Res 2023; 119:252-267. [PMID: 35420120 PMCID: PMC10236004 DOI: 10.1093/cvr/cvac061] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 02/19/2022] [Accepted: 03/23/2022] [Indexed: 11/14/2022] Open
Abstract
AIM The importance of endothelial cell (EC) autophagy to vascular homeostasis in the context of health and disease is evolving. Earlier, we reported that intact EC autophagy is requisite to maintain shear-stress-induced nitric oxide (NO) generation via glycolysis-dependent purinergic signalling to endothelial NO synthase (eNOS). Here, we illustrate the translational and functional significance of these findings. METHODS AND RESULTS First, we assessed translational relevance using older male humans and mice that exhibit blunted EC autophagy and impaired arterial function vs. adult controls. Active hyperaemia evoked by rhythmic handgrip exercise-elevated radial artery shear-rate similarly from baseline in adult and older subjects for 60 min. Compared with baseline, indexes of autophagy initiation, p-eNOSS1177 activation, and NO generation, occurred in radial artery ECs obtained from adult but not older volunteers. Regarding mice, indexes of autophagy and p-eNOSS1177 activation were robust in ECs from adult but not older animals that completed 60-min treadmill-running. Furthermore, 20 dyne • cm2 laminar shear stress × 45-min increased autophagic flux, glycolysis, ATP production, and p-eNOSS1177 in primary arterial ECs obtained from adult but not older mice. Concerning functional relevance, we next questioned whether the inability to initiate EC autophagy, glycolysis, and p-eNOSS1177in vitro precipitates arterial dysfunction ex vivo. Compromised intraluminal flow-mediated vasodilation displayed by arteries from older vs. adult mice was recapitulated in vessels from adult mice by (i) NO synthase inhibition; (ii) acute autophagy impairment using 3-methyladenine (3-MA); (iii) EC Atg3 depletion (iecAtg3KO mice); (iv) purinergic 2Y1-receptor (P2Y1-R) blockade; and (v) germline depletion of P2Y1-Rs. Importantly, P2Y1-R activation using 2-methylthio-ADP (2-Me-ADP) improved vasodilatory capacity in arteries from (i) adult mice treated with 3-MA; (ii) adult iecAtg3KO mice; and (iii) older animals with repressed EC autophagy. CONCLUSIONS Arterial dysfunction concurrent with pharmacological, genetic, and age-associated EC autophagy compromise is improved by activating P2Y1-Rs.
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Affiliation(s)
- Jae Min Cho
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Division of Endocrinology, Metabolism and Diabetes, Program in Molecular Medicine University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Seul-Ki Park
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Division of Endocrinology, Metabolism and Diabetes, Program in Molecular Medicine University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Oh Sung Kwon
- Department of Kinesiology, University of Connecticut, Storrs, CT, USA
- Department of Orthopedic Surgery & Center on Aging, University of Connecticut School of Medicine, Storrs, CT, USA
| | - David Taylor La Salle
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - James Cerbie
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - Caitlin C Fermoyle
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - David Morgan
- Department of Anesthesiology, University of Utah, Salt Lake City, UT, USA
| | - Ashley Nelson
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - Amber Bledsoe
- Department of Anesthesiology, University of Utah, Salt Lake City, UT, USA
| | - Leena P Bharath
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Division of Endocrinology, Metabolism and Diabetes, Program in Molecular Medicine University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Megan Tandar
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
| | - Satya P Kunapuli
- Sol Sherry Thrombosis Research Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA
| | - Russell S Richardson
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans Affairs Medical Center, Salt Lake City, UT, USA
- Department of Internal Medicine, Division of Geriatrics, University of Utah, Salt Lake City, UT, USA
| | | | - Sohom Mookherjee
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Division of Endocrinology, Metabolism and Diabetes, Program in Molecular Medicine University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Bellamkonda K Kishore
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Nephrology Research, George E. Whalen VA Medical Center, Salt Lake City, UT, USA
- Department of Internal Medicine, Division of Nephrology, University of Utah, Salt Lake City, UT, USA
| | - Fei Wang
- Nephrology Research, George E. Whalen VA Medical Center, Salt Lake City, UT, USA
- Department of Internal Medicine, Division of Nephrology, University of Utah, Salt Lake City, UT, USA
| | - Tianxin Yang
- Nephrology Research, George E. Whalen VA Medical Center, Salt Lake City, UT, USA
- Department of Internal Medicine, Division of Nephrology, University of Utah, Salt Lake City, UT, USA
| | - Sihem Boudina
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Division of Endocrinology, Metabolism and Diabetes, Program in Molecular Medicine University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Joel D Trinity
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans Affairs Medical Center, Salt Lake City, UT, USA
- Department of Internal Medicine, Division of Geriatrics, University of Utah, Salt Lake City, UT, USA
| | - John David Symons
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
- Division of Endocrinology, Metabolism and Diabetes, Program in Molecular Medicine University of Utah School of Medicine, Salt Lake City, UT, USA
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10
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Sebti S, Zou Z, Shiloh MU. BECN1 F121A mutation increases autophagic flux in aged mice and improves aging phenotypes in an organ-dependent manner. Autophagy 2023; 19:957-965. [PMID: 35993269 PMCID: PMC9980460 DOI: 10.1080/15548627.2022.2111852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 01/18/2023] Open
Abstract
Macroautophagy/autophagy is necessary for lifespan extension in multiple model organisms and autophagy dysfunction impacts age-related phenotypes and diseases. Introduction of an F121A mutation into the essential autophagy protein BECN1 constitutively increases basal autophagy in young mice and reduces cardiac and renal age-related changes in longer lived Becn1F121A mutant mice. However, both autophagic and lysosomal activities decline with age. Thus, whether autophagic flux is maintained during aging and whether it is enhanced in Becn1F121A mice is unknown. Here, we demonstrate that old wild-type mice maintained functional autophagic flux in heart, kidney and skeletal muscle but not liver, and old Becn1F121A mice had increased autophagic flux in those same organs compared to wild type. In parallel, Becn1F121A mice were not protected against age-associated hepatic phenotypes but demonstrated reduced skeletal muscle fiber atrophy. These findings identify an organ-specific role for the ability of autophagy to impact organ aging phenotypes.
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Affiliation(s)
- Salwa Sebti
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Zhongju Zou
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Michael U. Shiloh
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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11
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Cho JM, Ghosh R, Mookherjee S, Boudina S, Symons JD. Reduce, Reuse, Recycle, Run ! : 4 Rs to improve cardiac health in advanced age. Aging (Albany NY) 2022; 14:9388-9392. [PMID: 36470665 PMCID: PMC9792203 DOI: 10.18632/aging.204415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022]
Abstract
During the aging process damaged/dysfunctional proteins and organelles accumulate and contribute to organ dysfunction. Luckily, there is a conserved intracellular process to reuse and recycle these dysregulated cellular components termed macroautophagy (autophagy). Unfortunately, strong evidence indicates autophagy is compromised with aging, protein quality control is jeopardized, and resultant proteotoxicity can contribute significantly to age-associated organ dysfunction. Are there interventions that can re-establish autophagic flux that is otherwise impaired with aging? With particular regard to the heart, here we review evidence that caloric-restriction, the polyamine spermidine, and the mTOR inhibitor rapamycin, even when initiated late-in-life, restore cardiomyocyte autophagy to an extent that lessens age-associated cardiac dysfunction. Cho et al. provide a physiological intervention to this list i.e., regular physical exercise initiated late-in-life boosts cardiomyocyte autophagic flux and rejuvenates cardiac function in male mice. While this study provides strong evidence for a mechanism whereby heightened physical activity can lead to improved heart health in the context of aging, (i) only male mice were studied; (ii) the intensity of exercise-training might not be suitable for all; and (iii) mice with aging-associated comorbidities were not investigated. Nonetheless, Cho et al. provide robust evidence that a low-cost and simple behavioral intervention initiated late-in-life improves cardiomyocyte autophagic flux and rejuvenates cardiac function.
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Affiliation(s)
- Jae Min Cho
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA
| | - Rajeshwary Ghosh
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA
| | - Sohom Mookherjee
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA
| | - Sihem Boudina
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA,Division of Endocrinology, Metabolism and Diabetes, and Program in Molecular Medicine, University of Utah, Salt Lake City, UT 84112, USA
| | - J. David Symons
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT 84112, USA,Division of Endocrinology, Metabolism and Diabetes, and Program in Molecular Medicine, University of Utah, Salt Lake City, UT 84112, USA
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12
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Dai M, Hillmeister P. Exercise-mediated autophagy in cardiovascular diseases. Acta Physiol (Oxf) 2022; 236:e13890. [PMID: 36177522 DOI: 10.1111/apha.13890] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 09/27/2022] [Indexed: 01/29/2023]
Affiliation(s)
- Mengjun Dai
- Center for Internal Medicine 1, Department for Angiology, Faculty of Health Sciences (FGW), Deutsches Angiologie Zentrum (DAZB), Brandenburg Medical School (MHB) Theodor Fontane, University Clinic Brandenburg, Brandenburg/Havel, Germany.,Corporate member of Freie Universität Berlin, Charité - Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Philipp Hillmeister
- Center for Internal Medicine 1, Department for Angiology, Faculty of Health Sciences (FGW), Deutsches Angiologie Zentrum (DAZB), Brandenburg Medical School (MHB) Theodor Fontane, University Clinic Brandenburg, Brandenburg/Havel, Germany
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13
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Park SK, Cho JM, Mookherjee S, Pires PW, David Symons J. Recent Insights Concerning Autophagy and Endothelial Cell Nitric Oxide Generation. CURRENT OPINION IN PHYSIOLOGY 2022. [DOI: 10.1016/j.cophys.2022.100614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Liang W, Gustafsson ÅB. Recent Insights into the Role of Autophagy in the Heart. CURRENT OPINION IN PHYSIOLOGY 2022. [DOI: 10.1016/j.cophys.2022.100593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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15
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Tao H, Li W, Zhang W, Yang C, Zhang C, Liang X, Yin J, Bai J, Ge G, Zhang H, Yang X, Li H, Xu Y, Hao Y, Liu Y, Geng D. Urolithin A suppresses RANKL-induced osteoclastogenesis and postmenopausal osteoporosis by, suppresses inflammation and downstream NF-κB activated pyroptosis pathways. Pharmacol Res 2021; 174:105967. [PMID: 34740817 DOI: 10.1016/j.phrs.2021.105967] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/29/2021] [Accepted: 10/29/2021] [Indexed: 12/19/2022]
Abstract
Osteoporosis (OP) is characterized by decreased trabecular bone volume and microarchitectural deterioration in the medullary cavity. Urolithin A (UA) is a biologically active metabolite generated by the gut microbiota. UA is the measurable product considered the most relevant urolithin as the final metabolic product of polyphenolic compounds. Considering that catabolic effects mediated by the intestinal microbiota are highly involved in pathological bone disorders, exploring the biological influence and molecular mechanisms by which UA alleviates OP is crucial. Our study aimed to investigate the effect of UA administration on OP progression in the context of estrogen deficiency-induced bone loss. The in vivo results indicated that UA effectively reduced ovariectomy-induced systemic bone loss. In vitro, UA suppressed Receptor Activator for Nuclear Factor-κB Ligand (RANKL)-triggered osteoclastogenesis in a concentration-dependent manner. Signal transduction studies and sequencing analysis showed that UA significantly decreased the expression of inflammatory cytokines (e.g., IL-6 and TNF-α) in osteoclasts. Additionally, attenuation of inflammatory signaling cascades inhibited the NF-κB-activated NOD-like receptor signaling pathway, which eventually led to decreased cytoplasmic secretion of IL-1β and IL-18 and reduced expression of pyroptosis markers (NLRP3, GSDMD, and caspase-1). Consistent with this finding, an NLRP3 inflammasome inhibitor (MCC950) was employed to treat OP, and modulation of pyroptosis was found to ameliorate osteoclastogenesis and bone loss in ovariectomized (OVX) mice, suggesting that UA suppressed osteoclast formation by regulating the inflammatory signal-dependent pyroptosis pathway. Conceivably, UA administration may be a safe and promising therapeutic strategy for osteoclast-related bone diseases such as OP.
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Affiliation(s)
- Huaqiang Tao
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Wenming Li
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Wei Zhang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Chen Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Chun Zhang
- Anesthesiology Department, Suzhou Municipal Hospital (North District), Nanjing Medical University Affiliated Suzhou Hospital, 242, Guangjj Road, Suzhou, Jiangsu 215006, China
| | - Xiaolong Liang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Juan Yin
- Department of Digestive Disease and Nutrition Research Center, Suzhou Municipal Hospital (North District), Nanjing Medical University Affiliated Suzhou Hospital, 242, Guangjj Road, Suzhou, Jiangsu 215006, China
| | - Jiaxiang Bai
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Gaoran Ge
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Haifeng Zhang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Xing Yang
- Orthopedics and Sports Medicine Center, Suzhou Municipal Hospital (North District), Nanjing Medical University Affiliated Suzhou Hospital, 242, Guangji Road, Suzhou, Jiangsu 215006, China
| | - Hongxia Li
- Department of Cardiology, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Yaozeng Xu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China
| | - Yuefeng Hao
- Orthopedics and Sports Medicine Center, Suzhou Municipal Hospital (North District), Nanjing Medical University Affiliated Suzhou Hospital, 242, Guangji Road, Suzhou, Jiangsu 215006, China
| | - Yu Liu
- Departments of Orthopaedics, Wuxi Ninth People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu 214062, China.
| | - Dechun Geng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, No. 188 Shizi Street, Suzhou, Jiangsu 215006, China.
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16
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Cho JM, Park S, Ghosh R, Ly K, Ramous C, Thompson L, Hansen M, Mattera MSDLC, Pires KM, Ferhat M, Mookherjee S, Whitehead KJ, Carter K, Buffolo M, Boudina S, Symons JD. Late-in-life treadmill training rejuvenates autophagy, protein aggregate clearance, and function in mouse hearts. Aging Cell 2021; 20:e13467. [PMID: 34554626 PMCID: PMC8520717 DOI: 10.1111/acel.13467] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 07/08/2021] [Accepted: 08/05/2021] [Indexed: 01/18/2023] Open
Abstract
Protein quality control mechanisms decline during the process of cardiac aging. This enables the accumulation of protein aggregates and damaged organelles that contribute to age-associated cardiac dysfunction. Macroautophagy is the process by which post-mitotic cells such as cardiomyocytes clear defective proteins and organelles. We hypothesized that late-in-life exercise training improves autophagy, protein aggregate clearance, and function that is otherwise dysregulated in hearts from old vs. adult mice. As expected, 24-month-old male C57BL/6J mice (old) exhibited repressed autophagosome formation and protein aggregate accumulation in the heart, systolic and diastolic dysfunction, and reduced exercise capacity vs. 8-month-old (adult) mice (all p < 0.05). To investigate the influence of late-in-life exercise training, additional cohorts of 21-month-old mice did (old-ETR) or did not (old-SED) complete a 3-month progressive resistance treadmill running program. Body composition, exercise capacity, and soleus muscle citrate synthase activity improved in old-ETR vs. old-SED mice at 24 months (all p < 0.05). Importantly, protein expression of autophagy markers indicate trafficking of the autophagosome to the lysosome increased, protein aggregate clearance improved, and overall function was enhanced (all p < 0.05) in hearts from old-ETR vs. old-SED mice. These data provide the first evidence that a physiological intervention initiated late-in-life improves autophagic flux, protein aggregate clearance, and contractile performance in mouse hearts.
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Affiliation(s)
- Jae Min Cho
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Seul‐Ki Park
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Rajeshwary Ghosh
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Kellsey Ly
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Caroline Ramous
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Lauren Thompson
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Michele Hansen
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | | | - Karla Maria Pires
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Maroua Ferhat
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Sohom Mookherjee
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Kevin J. Whitehead
- Molecular Medicine Program University of Utah Salt Lake City Utah USA
- Division of Cardiovascular Medicine and Pediatric Cardiology University of Utah Salt Lake City Utah USA
- George E Wahlen VA Medical Center University of Utah Salt Lake City Utah USA
| | - Kandis Carter
- Molecular Medicine Program University of Utah Salt Lake City Utah USA
| | - Márcio Buffolo
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
| | - Sihem Boudina
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
- Molecular Medicine Program University of Utah Salt Lake City Utah USA
| | - J. David Symons
- Nutrition and Integrative Physiology University of Utah Salt Lake City Utah USA
- Molecular Medicine Program University of Utah Salt Lake City Utah USA
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