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Espadas I, Cáliz-Molina MÁ, López-Fernández-Sobrino R, Panadero-Morón C, Sola-García A, Soriano-Navarro M, Martínez-Force E, Venegas-Calerón M, Salas JJ, Martín F, Gauthier BR, Alfaro-Cervelló C, Martí-Aguado D, Capilla-González V, Martín-Montalvo A. Hydroxycitrate delays early mortality in mice and promotes muscle regeneration while inducing a rich hepatic energetic status. Aging Cell 2024:e14205. [PMID: 38760909 DOI: 10.1111/acel.14205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/09/2024] [Accepted: 05/06/2024] [Indexed: 05/20/2024] Open
Abstract
ATP citrate lyase (ACLY) inhibitors have the potential of modulating central processes in protein, carbohydrate, and lipid metabolism, which can have relevant physiological consequences in aging and age-related diseases. Here, we show that hepatic phospho-active ACLY correlates with overweight and Model for End-stage Liver Disease score in humans. Wild-type mice treated chronically with the ACLY inhibitor potassium hydroxycitrate exhibited delayed early mortality. In AML12 hepatocyte cultures, the ACLY inhibitors potassium hydroxycitrate, SB-204990, and bempedoic acid fostered lipid accumulation, which was also observed in the liver of healthy-fed mice treated with potassium hydroxycitrate. Analysis of soleus tissue indicated that potassium hydroxycitrate produced the modulation of wound healing processes. In vivo, potassium hydroxycitrate modulated locomotor function toward increased wire hang performance and reduced rotarod performance in healthy-fed mice, and improved locomotion in mice exposed to cardiotoxin-induced muscle atrophy. Our findings implicate ACLY and ACLY inhibitors in different aspects of aging and muscle regeneration.
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Affiliation(s)
- Isabel Espadas
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - María Ángeles Cáliz-Molina
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Raúl López-Fernández-Sobrino
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Concepción Panadero-Morón
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Alejandro Sola-García
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Mario Soriano-Navarro
- Electron Microscopy Core Facility, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain
| | | | | | - Joaquin J Salas
- Instituto de la Grasa (CSIC), Universidad Pablo de Olavide, Sevilla, Spain
| | - Franz Martín
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
- Biomedical Research Network on Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain
| | - Benoit R Gauthier
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
- Biomedical Research Network on Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain
| | - Clara Alfaro-Cervelló
- Pathology Department, INCLIVA Health Research Institute, Clinic University Hospital, University of Valencia, Valencia, Spain
| | - David Martí-Aguado
- Digestive Disease Department, Clinic University Hospital, INCLIVA Health Research Institute, Valencia, Spain
- Division of Gastroenterology, Hepatology and Nutrition, Center for Liver Diseases
| | - Vivian Capilla-González
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
| | - Alejandro Martín-Montalvo
- Andalusian Molecular Biology and Regenerative Medicine Centre-CABIMER, Universidad de Sevilla-CSIC-Universidad Pablo de Olavide, Seville, Spain
- Biomedical Research Network on Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain
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Benej M, Papandreou I, Denko NC. Hypoxic adaptation of mitochondria and its impact on tumor cell function. Semin Cancer Biol 2024; 100:28-38. [PMID: 38556040 DOI: 10.1016/j.semcancer.2024.03.004] [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: 01/09/2024] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 04/02/2024]
Abstract
Mitochondria are the major sink for oxygen in the cell, consuming it during ATP production. Therefore, when environmental oxygen levels drop in the tumor, significant adaptation is required. Mitochondrial activity is also a major producer of biosynthetic precursors and a regulator of cellular oxidative and reductive balance. Because of the complex biochemistry, mitochondrial adaptation to hypoxia occurs through multiple mechanisms and has significant impact on other cellular processes such as macromolecule synthesis and gene regulation. In tumor hypoxia, mitochondria shift their location in the cell and accelerate the fission and quality control pathways. Hypoxic mitochondria also undergo significant changes to fundamental metabolic pathways of carbon metabolism and electron transport. These metabolic changes further impact the nuclear epigenome because mitochondrial metabolites are used as enzymatic substrates for modifying chromatin. This coordinated response delivers physiological flexibility and increased tumor cell robustness during the environmental stress of low oxygen.
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Affiliation(s)
- Martin Benej
- Department of Radiation Oncology, OSU Wexner Medical Center, James Cancer Hospital and Solove Research Institute, Ohio State University, Columbus, OH, USA
| | - Ioanna Papandreou
- Department of Radiation Oncology, OSU Wexner Medical Center, James Cancer Hospital and Solove Research Institute, Ohio State University, Columbus, OH, USA; Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA
| | - Nicholas C Denko
- Department of Radiation Oncology, OSU Wexner Medical Center, James Cancer Hospital and Solove Research Institute, Ohio State University, Columbus, OH, USA; Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA.
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3
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Godoy Coto J, Pereyra EV, Cavalli FA, Valverde CA, Caldiz CI, Maté SM, Yeves AM, Ennis IL. Exercise-induced cardiac mitochondrial reorganization and enhancement in spontaneously hypertensive rats. Pflugers Arch 2024:10.1007/s00424-024-02956-7. [PMID: 38625371 DOI: 10.1007/s00424-024-02956-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/22/2024] [Accepted: 03/28/2024] [Indexed: 04/17/2024]
Abstract
The myocardium is a highly oxidative tissue in which mitochondria are essential to supply the energy required to maintain pump function. When pathological hypertrophy develops, energy consumption augments and jeopardizes mitochondrial capacity. We explored the cardiac consequences of chronic swimming training, focusing on the mitochondrial network, in spontaneously hypertensive rats (SHR). Male adult SHR were randomized to sedentary or trained (T: 8-week swimming protocol). Blood pressure and echocardiograms were recorded, and hearts were removed at the end of the training period to perform molecular, imaging, or isolated mitochondria studies. Swimming improved cardiac midventricular shortening and decreased the pathological hypertrophic marker atrial natriuretic peptide. Oxidative stress was reduced, and even more interesting, mitochondrial spatial distribution, dynamics, function, and ATP were significantly improved in the myocardium of T rats. In the signaling pathway triggered by training, we detected an increase in the phosphorylation level of both AKT and glycogen synthase kinase-3 β, key downstream targets of insulin-like growth factor 1 signaling that are crucially involved in mitochondria biogenesis and integrity. Aerobic exercise training emerges as an effective approach to improve pathological cardiac hypertrophy and bioenergetics in hypertension-induced cardiac hypertrophy.
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Affiliation(s)
- Joshua Godoy Coto
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina
| | - Erica V Pereyra
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina
| | - Fiorella A Cavalli
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina
| | - Carlos A Valverde
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina
| | - Claudia I Caldiz
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina
| | - Sabina M Maté
- Instituto de Investigaciones Bioquímicas de La Plata "Prof. Dr. Rodolfo R. Brenner" - Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina
| | - Alejandra M Yeves
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina.
| | - Irene L Ennis
- Centro de Investigaciones Cardiovasculares "Dr. Horacio E. Cingolani", Facultad de Ciencias Médicas, Universidad Nacional de La Plata (UNLP) - CONICET, La Plata, Argentina.
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Zádor E. Paradoxical Effect of Caloric Restriction on Overload-Induced Muscle Growth in Diastolic Heart Failure. JACC Basic Transl Sci 2024; 9:241-243. [PMID: 38510718 PMCID: PMC10950397 DOI: 10.1016/j.jacbts.2023.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Affiliation(s)
- Ernő Zádor
- Department of Biochemistry, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
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Espino-Gonzalez E, Tickle PG, Altara R, Gallagher H, Cheng CW, Engman V, Wood N, Justo da Silva GJ, Scalabrin M, Yu X, Zhong Z, Colman MA, Yuldasheva NY, Booz GW, Adams V, Pereira MG, Cataliotti A, Roberts LD, Egginton S, Bowen TS. Caloric Restriction Rejuvenates Skeletal Muscle Growth in Heart Failure With Preserved Ejection Fraction. JACC Basic Transl Sci 2024; 9:223-240. [PMID: 38510717 PMCID: PMC10950401 DOI: 10.1016/j.jacbts.2023.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 03/22/2024]
Abstract
Heart failure with preserved ejection fraction (HFpEF) is a major clinical problem, with limited treatments. HFpEF is characterized by a distinct, but poorly understood, skeletal muscle pathology, which could offer an alternative therapeutic target. In a rat model, we identified impaired myonuclear accretion as a mechanism for low myofiber growth in HFpEF following resistance exercise. Acute caloric restriction rescued skeletal muscle pathology in HFpEF, whereas cardiac therapies had no effect. Mechanisms regulating myonuclear accretion were dysregulated in patients with HFpEF. Overall, these findings may have widespread implications in HFpEF, indicating combined dietary with exercise interventions as a beneficial approach to overcome skeletal muscle pathology.
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Affiliation(s)
- Ever Espino-Gonzalez
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Peter G. Tickle
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Raffaele Altara
- Department of Anatomy & Embryology, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
- Department of Pathology, School of Medicine, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Harrison Gallagher
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Chew W. Cheng
- Leeds Institute of Cardiovascular and Metabolic Medicine, Faculty of Medicine, University of Leeds, Leeds, United Kingdom
| | - Viktor Engman
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Nathanael Wood
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | | | - Mattia Scalabrin
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Xinyue Yu
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Ziyi Zhong
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Michael A. Colman
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Nadira Y. Yuldasheva
- Leeds Institute of Cardiovascular and Metabolic Medicine, Faculty of Medicine, University of Leeds, Leeds, United Kingdom
| | - George W. Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Volker Adams
- Heart Center Dresden, TU-Dresden, Dresden, Germany
| | - Marcelo G. Pereira
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Alessandro Cataliotti
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Lee D. Roberts
- Leeds Institute of Cardiovascular and Metabolic Medicine, Faculty of Medicine, University of Leeds, Leeds, United Kingdom
| | - Stuart Egginton
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - T. Scott Bowen
- School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, United Kingdom
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6
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Dawuti A, Ma L, An X, Guan J, Zhou C, He L, Xu Y, Han B, Abulizi A. Exploring the effect and mechanism of Aloin A against cancer cachexia-induced muscle atrophy via network pharmacology, molecular docking, molecular dynamics and experimental validation. Aging (Albany NY) 2023; 15:15557-15577. [PMID: 38180061 PMCID: PMC10781478 DOI: 10.18632/aging.205416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/06/2023] [Indexed: 01/06/2024]
Abstract
80% of advanced cancer patients suffer from cachexia, but there are no FDA-approved drugs. Therefore, it is imperative to discover potential drugs. OBJECTIVE This study aims at exploring the effect and targets of Aloin A against cancer cachexia (CC)-induced muscle atrophy. METHODS Network pharmacology, molecular docking, molecular dynamics (MD) and animal model of CC-induced muscle atrophy with a series of behavior tests, muscle quality, HE staining and RT-PCR were performed to investigate the anticachectic effects and targets of Aloin A and its molecular mechanism. RESULTS Based on network pharmacology, 51 potential targets of Aloin A on CC-induced muscle atrophy were found, and then 10 hub genes were predicted by the PPI network. Next, KEGG and GO enrichment analysis showed that the anticachectic effect of Aloin A is associated with PI3K-AKT, MAPK, TNF, TLR, etc., pathways, and biological processes like inflammation, apoptosis and cell proliferation. Molecular docking and MD results showed good binding ability between the Aloin A and key targets. Moreover, experiments in vivo demonstrated that Aloin A effectively rescued muscle function and wasting by improving muscle quality, mean CSA, and distribution of muscle fibers by regulating HSP90AA1/AKT signaling in tumor-bearing mice. CONCLUSION This study offers new insights for researchers to understand the effect and mechanism of Aloin A against CC using network pharmacology, molecular docking, MD and experimental validation, and Aloin A retards CC-induced muscle wasting through multiple targets and pathways, including HSP90AA1/AKT signaling, which provides evidence for Aloin A as a potential therapy for cancer cachexia in clinic.
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Affiliation(s)
- Awaguli Dawuti
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Lisha Ma
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
| | - Xueyan An
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
| | - Jiawei Guan
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
| | - Changdong Zhou
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
| | - Linyun He
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
| | - Yue Xu
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Bo Han
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
| | - Abudumijiti Abulizi
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, College of Pharmacy, Shihezi University, Shihezi 832002, China
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
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Nghi HT, Shahmohammadi S, Ebrahimi KH. Ancient complexes of iron and sulfur modulate oncogenes and oncometabolism. Curr Opin Chem Biol 2023; 76:102338. [PMID: 37295349 DOI: 10.1016/j.cbpa.2023.102338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 06/12/2023]
Abstract
Inorganic complexes of iron and sulfur, that is, iron-sulfur [FeS] clusters, have played a fundamental role in life on Earth since the prebiotic period. These clusters were involved in elementary reactions leading to the emergence of life and, since then, gained function in processes, such as respiration, replication, transcription, and the immune response. We discuss how three [FeS] proteins involved in the innate immune response play a role in oncogene expression/function and oncometabolism. Our analysis highlights the importance of future research into understanding the [FeS] clusters' roles in cancer progression and proliferation. The outcomes of these studies will help identify new targets and develop new anticancer therapeutics.
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Affiliation(s)
- Hoang Thao Nghi
- Institute of Pharmaceutical Science, School of Cancer & Pharmaceutical Sciences, King's College London, London, United Kingdom
| | - Sayeh Shahmohammadi
- Institute of Pharmaceutical Chemistry, Interdisciplinary Excellence Center and Stereochemistry Research Group, Eötvös Loránd Research Network, Faculty of Pharmacy, University of Szeged, H-6720, Szeged, Hungary
| | - Kourosh H Ebrahimi
- Institute of Pharmaceutical Science, School of Cancer & Pharmaceutical Sciences, King's College London, London, United Kingdom.
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8
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Bennett CF, Latorre-Muro P, Puigserver P. Mechanisms of mitochondrial respiratory adaptation. Nat Rev Mol Cell Biol 2022; 23:817-835. [PMID: 35804199 PMCID: PMC9926497 DOI: 10.1038/s41580-022-00506-6] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2022] [Indexed: 02/07/2023]
Abstract
Mitochondrial energetic adaptations encompass a plethora of conserved processes that maintain cell and organismal fitness and survival in the changing environment by adjusting the respiratory capacity of mitochondria. These mitochondrial responses are governed by general principles of regulatory biology exemplified by changes in gene expression, protein translation, protein complex formation, transmembrane transport, enzymatic activities and metabolite levels. These changes can promote mitochondrial biogenesis and membrane dynamics that in turn support mitochondrial respiration. The main regulatory components of mitochondrial energetic adaptation include: the transcription coactivator peroxisome proliferator-activated receptor-γ (PPARγ) coactivator 1α (PGC1α) and associated transcription factors; mTOR and endoplasmic reticulum stress signalling; TOM70-dependent mitochondrial protein import; the cristae remodelling factors, including mitochondrial contact site and cristae organizing system (MICOS) and OPA1; lipid remodelling; and the assembly and metabolite-dependent regulation of respiratory complexes. These adaptive molecular and structural mechanisms increase respiration to maintain basic processes specific to cell types and tissues. Failure to execute these regulatory responses causes cell damage and inflammation or senescence, compromising cell survival and the ability to adapt to energetically demanding conditions. Thus, mitochondrial adaptive cellular processes are important for physiological responses, including to nutrient availability, temperature and physical activity, and their failure leads to diseases associated with mitochondrial dysfunction such as metabolic and age-associated diseases and cancer.
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Affiliation(s)
- Christopher F Bennett
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Pedro Latorre-Muro
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Pere Puigserver
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.
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9
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Decrotonylation of AKT1 promotes AKT1 phosphorylation and activation during myogenic differentiation. J Adv Res 2022:S2090-1232(22)00235-1. [PMID: 36265762 PMCID: PMC10403674 DOI: 10.1016/j.jare.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/13/2022] [Accepted: 10/11/2022] [Indexed: 11/08/2022] Open
Abstract
INTRODUCTION Myogenic differentiation plays an important role in pathophysiological processes including muscle injury and regeneration, as well as muscle atrophy. A novel type of posttranslational modification, crotonylation, has been reported to play a role in stem cell differentiation and disease. However, the role of crotonylation in myogenic differentiation has not been clarified. OBJECTIVES This study aims to find the role of crotonylation during myogenic differentiation and explore whether it is a potential target in myogenic dysfunction disease. METHODS C2C12 cell line and skeletal muscle mesenchymal progenitors of Mus musculus were used for myogenic process study in vitro, while muscle injury model of mice was used for in vivo muscle regeneration study. Mass spectrometry favored in discovery of potential target protein of crotonylation and its specific sites. RESULTS We confirmed the gradual decrease in total protein crotonylation level during muscle differentiation and found decreased crotonylation of AKT1, which facilitated an increase in AKT1 phosphorylation. Then we verified that crotonylation of AKT1 at specific sites weakened its binding with PDK1 and impaired its phosphorylation. In addition, we found that increased expression of the crotonylation eraser HDAC3 decreased AKT1 crotonylation levels during myogenic differentiation, jointly promoting myogenic differentiation. CONCLUSION Our study highlights the important role of decrotonylation of AKT1 in the process of muscle differentiation, where it aids the phosphorylation and activation of AKT1 and promotes myogenic differentiation. This is of great significance for exploring the pathophysiological process of muscle injury repair and sarcopenia.
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10
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Barbosa H, Ramadan W, Matzenbacher dos Santos J, Benite-Ribeiro SA. Effects of Physical Exercise on Mitochondrial Biogenesis of Skeletal Muscle Modulated by Histones Modifications in Type 2 Diabetes. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.10095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Epigenetic modification in skeletal muscle induced by environmental factors seems to modulate several metabolic pathways that underlie Type 2 Diabetes Mellitus (T2DM) development. Mitochondrial biogenesis is an important process for maintaining lipid metabolism homeostasis, as well as epigenetic modifications in proteins that regulate this pathway have been observed in the skeletal muscle of T2DM subjects. Moreover, physical exercise affects several metabolic pathways attenuating metabolic deregulation observed in T2DM. The pathways that regulate mitochondrial homeostasis are one of the key components for understanding such physical exercise beneficial effects. Thus, in this study, we investigate the epigenetic mechanisms underlying mitochondrial biogenesis in the skeletal muscle in T2DM, focusing on histone modifications and the possible mechanisms by which physical exercise delay or inhibit T2DM onset. The results indicate that exercise promotes improvements in cellular metabolism through increasing enzymes of the antioxidant system, AMPK and ATP-citrate lyase activity, Acetyl-CoA concentration, and enhancing the acetylation of histones. A key mediator of mitochondrial biogenesis such as peroxisome proliferator-activated receptor γ coactivator-1α (PGC1) seems to be upregulated by exercise in T2DM and such factor positively regulates the skeletal muscle mitochondrial biogenesis, which improves energy metabolism and glucose homeostasis inhibiting or delaying insulin resistance and further T2DM.
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11
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Harley BK, Amponsah IK, Ben IO, Mireku-Gyimah NA, Anokwah D, Neglo D, Amengor CDK, Fleischer TC. Hypoglycaemic activity of Oleanonic acid, a 3-oxotriterpenoid isolated from Aidia Genipiflora (DC.) Dandy, involves inhibition of carbohydrate metabolic enzymes and promotion of glucose uptake. Biomed Pharmacother 2022; 149:112833. [PMID: 35316751 DOI: 10.1016/j.biopha.2022.112833] [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: 01/31/2022] [Revised: 03/11/2022] [Accepted: 03/16/2022] [Indexed: 11/02/2022] Open
Abstract
The present study evaluated the antidiabetic activities of the 70% ethanol stem bark extract of Aidia genipiflora (AGB) and one of its constituents, oleanonic acid in streptozotocin (40 mg/kg)-induced diabetic rats. In vitro assays of glucose uptake and inhibition of carbohydrate metabolizing enzymes were then used to investigate their mechanism(s) of hypoglycaemic action. In silico evaluation of the pharmacokinetic and toxicity properties of the compound was also carried out. Administration of AGB (100-400 mg/kg) and oleanonic acid (15 - 60 mg/kg) resulted in significant reductions (p < 0.001) in the blood glucose and considerable decrease (p < 0.05) in the elevated lipid parameters of the diabetic animals. AGB activity at 200 and 400 mg/kg; and oleanonic acid at 60 mg/kg were comparable to glibenclamide (5 mg/kg). The extract and its isolate strongly inhibited α-glucosidase and α-amylase activity with IC50 values of (10.48 ± 1.39 µg/mL and 14.51 ± 1.26 µg/mL) and (36.52 ± 1.95 µM and 105.84 ± 1.08 µM) respectively. The glucose uptake assays showed that AGB and oleanonic acid exerted both insulin-dependent and independent promotional effect of glucose transport into the periphery by upregulating the expression of PI3K and PPARγ transcripts with a concomitant increase in GLUT-4 transcripts. Although oleanonic acid was predicted to be teratogenic, it was found to be generally non-lethal with favourable pharmacokinetics properties making it suitable for further studies. The study has shown that the stem bark of A. genipiflora is a source of new hypoglycaemic agents and that oleanonic acid possesses hypoglycaemic and anti-hyperlipidaemic activities.
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Affiliation(s)
- Benjamin Kingsley Harley
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana.
| | - Isaac Kingsley Amponsah
- Department of Pharmacognosy, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Inemesit Okon Ben
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
| | - Nana Ama Mireku-Gyimah
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy, University of Ghana, Accra, Ghana
| | - Daniel Anokwah
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy, University of Cape-Coast, Cape-Coast, Ghana
| | - David Neglo
- Department of Basic Science, School of Basic and Biomedical Sciences, University of Health and Allied Sciences, Ho, Ghana
| | - Cedric Dzidzor K Amengor
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
| | - Theophilus Christian Fleischer
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
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12
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de França E, dos Santos RVT, Baptista LC, Da Silva MAR, Fukushima AR, Hirota VB, Martins RA, Caperuto EC. Potential Role of Chronic Physical Exercise as a Treatment in the Development of Vitiligo. Front Physiol 2022; 13:843784. [PMID: 35360245 PMCID: PMC8960951 DOI: 10.3389/fphys.2022.843784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 02/08/2022] [Indexed: 02/04/2023] Open
Abstract
Vitiligo is an autoimmune disease characterized by progressive skin depigmentation and the appearance of white patches throughout the body caused by significant apoptosis of epidermal melanocytes. Despite not causing any physical pain, vitiligo can originate several psychosocial disorders, drastically reducing patients' quality of life. Emerging evidence has shown that vitiligo is associated with several genetic polymorphisms related to auto-reactivity from the immune system to melanocytes. Melanocytes from vitiligo patients suffer from excess reactive oxygen species (ROS) produced by defective mitochondria besides a poor endogenous antioxidant system (EAS). This redox imbalance results in dramatic melanocyte oxidative stress (OS), causing significant damage in proteins, lipid membranes, and DNA. The damaged melanocytes secret damage-associated molecular pattern (DAMPs), inducing and increasing inflammatory gene expression response that ultimately leads to melanocytes apoptosis. Vitiligo severity has been also associated with increasing the prevalence and incidence of metabolic syndrome (MetS) or associated disorders such as insulin resistance and hypercholesterolemia. Thus, suggesting that in genetically predisposed individuals, the environmental context that triggers MetS (i.e., sedentary lifestyle) may also be an important trigger for the development and severity of vitiligo disease. This paper will discuss the relationship between the immune system and epidermal melanocytes and their interplay with the redox system. Based on state-of-the-art evidence from the vitiligo research, physical exercise (PE) immunology, and redox system literature, we will also propose chronic PE as a potential therapeutic strategy to treat and prevent vitiligo disease progression. We will present evidence that chronic PE can change the balance of inflammatory to an anti-inflammatory state, improve both EAS and the mitochondrial structure and function (resulting in the decrease of OS). Finally, we will highlight clinically relevant markers that can be analyzed in a new research avenue to test the potential applicability of chronic PE in vitiligo disease.
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Affiliation(s)
- Elias de França
- Human Movement Laboratory, São Judas University, São Paulo, Brazil
- Departamento de Biociências, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Liliana C. Baptista
- Faculty of Sport, Research Centre in Physical Activity, Health and Leisure, University of Porto, Porto, Portugal
- Center for Exercise Medicine, University of Alabama at Birmingham, Birmingham, AL United States
- Targeted Exercise, Microbiome and Aging Laboratory, University of Alabama, Birmingham, AL United States
| | - Marco A. R. Da Silva
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal
- Department of Physical Education, Universidade da Amazônia, Belém, Brazil
| | - André R. Fukushima
- Centro Universitário das Américas – FAM, São Paulo, Brazil
- Faculdade de Ciências da Saúde – IGESP – FASIG, São Paulo, Brazil
| | | | - Raul A. Martins
- Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal
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13
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Salamone IM, Quattrocelli M, Barefield DY, Page PG, Tahtah I, Hadhazy M, Tomar G, McNally EM. Intermittent glucocorticoid treatment enhances skeletal muscle performance through sexually dimorphic mechanisms. J Clin Invest 2022; 132:149828. [PMID: 35143417 PMCID: PMC8920338 DOI: 10.1172/jci149828] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 02/02/2022] [Indexed: 11/17/2022] Open
Abstract
Glucocorticoid steroids are commonly prescribed for many inflammatory conditions, but chronic daily use produces adverse effects, including muscle wasting and weakness. In contrast, shorter glucocorticoid pulses may improve athletic performance, although the mechanisms remain unclear. Muscle is sexually dimorphic and comparatively little is known about how male and female muscles respond to glucocorticoids. We investigated the impact of once-weekly glucocorticoid exposure on skeletal muscle performance comparing male and female mice. One month of once-weekly glucocorticoid dosing improved muscle specific force in both males and females. Transcriptomic profiling of isolated myofibers identified a striking sexually dimorphic response to weekly glucocorticoids. Male myofibers had increased expression of genes in the IGF1/PI3K pathway and calcium handling, while female myofibers had profound upregulation of lipid metabolism genes. Muscles from weekly prednisone–treated males had improved calcium handling, while comparably treated female muscles had reduced intramuscular triglycerides. Consistent with altered lipid metabolism, weekly prednisone–treated female mice had greater endurance relative to controls. Using chromatin immunoprecipitation, we defined a sexually dimorphic chromatin landscape after weekly prednisone. These results demonstrate that weekly glucocorticoid exposure elicits distinct pathways in males versus females, resulting in enhanced performance.
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Affiliation(s)
- Isabella M Salamone
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, United States of America
| | - Mattia Quattrocelli
- Department of Pediatrics, Cinicinnati Children's Hospital, Cincinnati, United States of America
| | - David Y Barefield
- Cell and Molecular Physiology, Loyola University Stritch School of Medicine, Maywood, United States of America
| | - Patrick G Page
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, United States of America
| | - Ibrahim Tahtah
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, United States of America
| | - Michele Hadhazy
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, United States of America
| | - Garima Tomar
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, United States of America
| | - Elizabeth M McNally
- Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, United States of America
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14
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Jaiswal N, Gavin M, Loro E, Sostre‐Colón J, Roberson PA, Uehara K, Rivera‐Fuentes N, Neinast M, Arany Z, Kimball SR, Khurana TS, Titchenell PM. AKT controls protein synthesis and oxidative metabolism via combined mTORC1 and FOXO1 signalling to govern muscle physiology. J Cachexia Sarcopenia Muscle 2022; 13:495-514. [PMID: 34751006 PMCID: PMC8818654 DOI: 10.1002/jcsm.12846] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 09/14/2021] [Accepted: 10/05/2021] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Skeletomuscular diseases result in significant muscle loss and decreased performance, paralleled by a loss in mitochondrial and oxidative capacity. Insulin and insulin-like growth factor-1 (IGF-1) are two potent anabolic hormones that activate a host of signalling intermediates including the serine/threonine kinase AKT to influence skeletal muscle physiology. Defective AKT signalling is associated with muscle pathology, including cachexia, sarcopenia, and disuse; however, the mechanistic underpinnings remain unresolved. METHODS To elucidate the role of AKT signalling in muscle mass and physiology, we generated both congenital and inducible mouse models of skeletal muscle-specific AKT deficiency. To understand the downstream mechanisms mediating AKT's effects on muscle biology, we generated mice lacking AKT1/2 and FOXO1 (M-AKTFOXO1TKO and M-indAKTFOXO1TKO) to inhibit downstream FOXO1 signalling, AKT1/2 and TSC1 (M-AKTTSCTKO and M-indAKTTSCTKO) to activate mTORC1, and AKT1/2, FOXO1, and TSC1 (M-QKO and M-indQKO) to simultaneously activate mTORC1 and inhibit FOXO1 in AKT-deficient skeletal muscle. Muscle proteostasis and physiology were assessed using multiple assays including metabolic labelling, mitochondrial function, fibre typing, ex vivo physiology, and exercise performance. RESULTS Here, we show that genetic ablation of skeletal muscle AKT signalling resulted in decreased muscle mass and a loss of oxidative metabolism and muscle performance. Specifically, deletion of muscle AKT activity during development or in adult mice resulted in a significant reduction in muscle growth by 30-40% (P < 0.0001; n = 12-20) and 15% (P < 0.01 and P < 0.0001; n = 20-30), respectively. Interestingly, this reduction in muscle mass was primarily due to an ~40% reduction in protein synthesis in both M-AKTDKO and M-indAKTDKO muscles (P < 0.05 and P < 0.01; n = 12-20) without significant changes in proteolysis or autophagy. Moreover, a significant reduction in oxidative capacity was observed in both M-AKTDKO (P < 0.05, P < 0.01 and P < 0.001; n = 5-12) and M-indAKTDKO (P < 0.05 and P < 0.01; n = 4). Mechanistically, activation and inhibition of mTORC1/FOXO1, respectively, but neither alone, were sufficient to restore protein synthesis, muscle oxidative capacity, and muscle function in the absence of AKT in vivo. In a mouse model of disuse-induced muscle loss, simultaneous activation of mTORC1 and inhibition of FOXO1 preserved muscle mass following immobilization (~5-10% reduction in casted M-indFOXO1TSCDKO muscles vs. ~30-40% casted M-indControl muscles, P < 0.05 and P < 0.0001; n = 8-16). CONCLUSIONS Collectively, this study provides novel insights into the AKT-dependent mechanisms that underlie muscle protein homeostasis, function, and metabolism in both normal physiology and disuse-induced muscle wasting.
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Affiliation(s)
- Natasha Jaiswal
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Matthew Gavin
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Emanuele Loro
- Department of PhysiologyPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
- Penn Muscle Institute, Department of PhysiologyPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Jaimarie Sostre‐Colón
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Paul A. Roberson
- Department of Cellular and Molecular PhysiologyPenn State College of MedicineHersheyPAUSA
| | - Kahealani Uehara
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Nicole Rivera‐Fuentes
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Michael Neinast
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
- Cardiovascular InstitutePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Zoltan Arany
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
- Cardiovascular InstitutePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Scot R. Kimball
- Department of Cellular and Molecular PhysiologyPenn State College of MedicineHersheyPAUSA
| | - Tejvir S. Khurana
- Department of PhysiologyPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
- Penn Muscle Institute, Department of PhysiologyPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
| | - Paul M. Titchenell
- Institute for Diabetes, Obesity, and MetabolismPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
- Department of PhysiologyPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPAUSA
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15
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Batchuluun B, Pinkosky SL, Steinberg GR. Lipogenesis inhibitors: therapeutic opportunities and challenges. Nat Rev Drug Discov 2022; 21:283-305. [PMID: 35031766 PMCID: PMC8758994 DOI: 10.1038/s41573-021-00367-2] [Citation(s) in RCA: 105] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/03/2021] [Indexed: 12/12/2022]
Abstract
Fatty acids are essential for survival, acting as bioenergetic substrates, structural components and signalling molecules. Given their vital role, cells have evolved mechanisms to generate fatty acids from alternative carbon sources, through a process known as de novo lipogenesis (DNL). Despite the importance of DNL, aberrant upregulation is associated with a wide variety of pathologies. Inhibiting core enzymes of DNL, including citrate/isocitrate carrier (CIC), ATP-citrate lyase (ACLY), acetyl-CoA carboxylase (ACC) and fatty acid synthase (FAS), represents an attractive therapeutic strategy. Despite challenges related to efficacy, selectivity and safety, several new classes of synthetic DNL inhibitors have entered clinical-stage development and may become the foundation for a new class of therapeutics. De novo lipogenesis (DNL) is vital for the maintenance of whole-body and cellular homeostasis, but aberrant upregulation of the pathway is associated with a broad range of conditions, including cardiovascular disease, metabolic disorders and cancers. Here, Steinberg and colleagues provide an overview of the physiological and pathological roles of the core DNL enzymes and assess strategies and agents currently in development to therapeutically target them.
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Affiliation(s)
- Battsetseg Batchuluun
- Centre for Metabolism, Obesity and Diabetes Research, Department of Medicine and Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | - Gregory R Steinberg
- Centre for Metabolism, Obesity and Diabetes Research, Department of Medicine and Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada.
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16
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Interception of host fatty acid metabolism by mycobacteria under hypoxia to suppress anti-TB immunity. Cell Discov 2021; 7:90. [PMID: 34608123 PMCID: PMC8490369 DOI: 10.1038/s41421-021-00301-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 07/01/2021] [Indexed: 02/08/2023] Open
Abstract
Pathogenic mycobacteria induce the formation of hypoxic granulomas during latent tuberculosis (TB) infection, in which the immune system contains, but fails to eliminate the mycobacteria. Fatty acid metabolism-related genes are relatively overrepresented in the mycobacterial genome and mycobacteria favor host-derived fatty acids as nutrient sources. However, whether and how mycobacteria modulate host fatty acid metabolism to drive granuloma progression remains unknown. Here, we report that mycobacteria under hypoxia markedly secrete the protein Rv0859/MMAR_4677 (Fatty-acid degradation A, FadA), which is also enriched in tuberculous granulomas. FadA acts as an acetyltransferase that converts host acetyl-CoA to acetoacetyl-CoA. The reduced acetyl-CoA level suppresses H3K9Ac-mediated expression of the host proinflammatory cytokine Il6, thus promoting granuloma progression. Moreover, supplementation of acetate increases the level of acetyl-CoA and inhibits the formation of granulomas. Our findings suggest an unexpected mechanism of a hypoxia-induced mycobacterial protein suppressing host immunity via modulation of host fatty acid metabolism and raise the possibility of a novel therapeutic strategy for TB infection.
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17
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Guo Q, Kang H, Wang J, Dong Y, Peng R, Zhao H, Wu W, Guan H, Li F. Inhibition of ACLY Leads to Suppression of Osteoclast Differentiation and Function Via Regulation of Histone Acetylation. J Bone Miner Res 2021; 36:2065-2080. [PMID: 34155695 DOI: 10.1002/jbmr.4399] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 12/17/2022]
Abstract
ATP-citrate lyase (ACLY), generating most of the nucleocytosolic acetyl coenzyme A (acetyl-CoA) for histone acetylation, links cell metabolism to epigenetic regulation. Recent investigations demonstrated that ACLY activated by metabolic reprogramming played an essential role in both M1 and M2 macrophage activation via histone acetylation. Previous studies also revealed that histone methylation and acetylation were critical for transcriptional regulation of osteoclast-specific genes. Considering that osteoclast differentiation also undergoes metabolic reprogramming and the activity of ACLY is always Akt-dependent, we inferred that receptor activator of NF-κB (RANK) activation might enhance the activity of ACLY through downstream pathways and ACLY might play a role in osteoclast formation. In the current study, we found that ACLY was gradually activated during RANK ligand (RANKL)-induced osteoclast differentiation from bone marrow-derived macrophages (BMMs). Both ACLY knock-down and small molecular ACLY inhibitor BMS-303141 significantly decreased nucleocytosolic acetyl-CoA in BMMs and osteoclasts and suppressed osteoclast formation in vitro. BMS-303141 also suppressed osteoclast formation in vivo and prevents ovariectomy (OVX)-induced bone loss. Further investigations showed that RANKL triggered ACLY translocation into nucleus, consistent with increasing histone H3 acetylation, which was correlated to ACLY. The H3 lysine residues influenced by ACLY were in accordance with GCN5 targets. Using GCN5 knock-down and overexpression, we showed that ACLY and GCN5 functioned in the same pathway for histone H3 acetylation. Analysis of pathways downstream of RANK activation revealed that ACLY was Akt-dependent and predominately affected Akt pathway. With the help of RNA-sequencing, we discovered Rac1 as a downstream regulator of ACLY, which was involved in shACLY-mediated suppression of osteoclast differentiation, cytoskeleton organization, and signal transduction and was transcriptionally regulated by ACLY via histone H3 acetylation. To summarize, our results proved that inhibition of ATP-citrate lyase led to suppression of osteoclast differentiation and function via regulation of histone acetylation. Rac1 could be a downstream regulator of ACLY. © 2021 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Qian Guo
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Honglei Kang
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia Wang
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yimin Dong
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Renpeng Peng
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongjian Zhao
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Wu
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hanfeng Guan
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Feng Li
- Department of Orthopedic Surgery and Biological Engineering and Regenerative Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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18
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Tian M, Hao F, Jin X, Sun X, Jiang Y, Wang Y, Li D, Chang T, Zou Y, Peng P, Xia C, Liu J, Li Y, Wang P, Feng Y, Wei M. ACLY ubiquitination by CUL3-KLHL25 induces the reprogramming of fatty acid metabolism to facilitate iTreg differentiation. eLife 2021; 10:62394. [PMID: 34491895 PMCID: PMC8423445 DOI: 10.7554/elife.62394] [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: 08/23/2020] [Accepted: 08/22/2021] [Indexed: 12/25/2022] Open
Abstract
Inducible regulatory T (iTreg) cells play a central role in immune suppression. As iTreg cells are differentiated from activated T (Th0) cells, cell metabolism undergoes dramatic changes, including a shift from fatty acid synthesis (FAS) to fatty acid oxidation (FAO). Although the reprogramming in fatty acid metabolism is critical, the mechanism regulating this process during iTreg differentiation is still unclear. Here we have revealed that the enzymatic activity of ATP-citrate lyase (ACLY) declined significantly during iTreg differentiation upon transforming growth factor β1 (TGFβ1) stimulation. This reduction was due to CUL3-KLHL25-mediated ACLY ubiquitination and degradation. As a consequence, malonyl-CoA, a metabolic intermediate in FAS that is capable of inhibiting the rate-limiting enzyme in FAO, carnitine palmitoyltransferase 1 (CPT1), was decreased. Therefore, ACLY ubiquitination and degradation facilitate FAO and thereby iTreg differentiation. Together, we suggest TGFβ1-CUL3-KLHL25-ACLY axis as an important means regulating iTreg differentiation and bring insights into the maintenance of immune homeostasis for the prevention of immune diseases.
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Affiliation(s)
- Miaomiao Tian
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Fengqi Hao
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Xin Jin
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Xue Sun
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Ying Jiang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Yang Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Dan Li
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tianyi Chang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Yingying Zou
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Pinghui Peng
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Chaoyi Xia
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Jia Liu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Yuanxi Li
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Ping Wang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yunpeng Feng
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Min Wei
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
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19
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Qu Z, Zhou S, Li P, Liu C, Yuan B, Zhang S, Liu A. Natural products and skeletal muscle health. J Nutr Biochem 2021; 93:108619. [DOI: 10.1016/j.jnutbio.2021.108619] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 11/26/2020] [Accepted: 02/01/2021] [Indexed: 12/17/2022]
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20
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Lee J, Vijayakumar A, White PJ, Xu Y, Ilkayeva O, Lynch CJ, Newgard CB, Kahn BB. BCAA Supplementation in Mice with Diet-induced Obesity Alters the Metabolome Without Impairing Glucose Homeostasis. Endocrinology 2021; 162:6188397. [PMID: 33765118 PMCID: PMC8183497 DOI: 10.1210/endocr/bqab062] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Indexed: 12/26/2022]
Abstract
Circulating branched chain amino acid (BCAA) levels are elevated in obese humans and genetically obese rodents. However, the relationship of BCAAs to insulin resistance in diet-induced obese mice, a commonly used model to study glucose homeostasis, is still ill-defined. Here we examined how high-fat high-sucrose (HFHS) or high-fat diet (HFD) feeding, with or without BCAA supplementation in water, alters the metabolome in serum/plasma and tissues in mice and whether raising circulating BCAA levels worsens insulin resistance and glucose intolerance. Neither HFHS nor HFD feeding raised circulating BCAA levels in insulin-resistant diet-induced obese mice. BCAA supplementation raised circulating BCAA and branched-chain α-keto acid levels and C5-OH/C3-DC acylcarnitines (AC) in muscle from mice fed an HFHS diet or HFD, but did not worsen insulin resistance. A set of short- and long-chain acyl CoAs were elevated by diet alone in muscle, liver, and white adipose tissue (WAT), but not increased further by BCAA supplementation. HFD feeding reduced valine and leucine oxidation in WAT but not in muscle. BCAA supplementation markedly increased valine oxidation in muscle from HFD-fed mice, while leucine oxidation was unaffected by diet or BCAA treatment. Here we establish an extensive metabolome database showing tissue-specific changes in mice on 2 different HFDs, with or without BCAA supplementation. We conclude that mildly elevating circulating BCAAs and a subset of ACs by BCAA supplementation does not worsen insulin resistance or glucose tolerance in mice. This work highlights major differences in the effects of BCAAs on glucose homeostasis in diet-induced obese mice versus data reported in obese rats and in humans.
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Affiliation(s)
- Jennifer Lee
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
| | - Archana Vijayakumar
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
- Current Affiliation: Archana Vijayakumar, Gilead Sciences, Inc, Foster City, CA 94404, USA; Christopher J. Lynch, Office of Nutrition Research, National Institutes of Diabetes and Digestive and Kidney Diseases, Bethesda, MD 20892, USA
| | - Phillip J White
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC 27710, USA
- 3Department of Pharmacology and Cancer Biology, and Department of Medicine, Endocrine Division, Duke University Medical Center, Durham, NC 27701, USA
| | - Yuping Xu
- Cellular and Molecular Physiology Department, Pennsylvania State University, Hershey, PA 17033, USA
| | - Olga Ilkayeva
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC 27710, USA
- 3Department of Pharmacology and Cancer Biology, and Department of Medicine, Endocrine Division, Duke University Medical Center, Durham, NC 27701, USA
| | - Christopher J Lynch
- Cellular and Molecular Physiology Department, Pennsylvania State University, Hershey, PA 17033, USA
| | - Christopher B Newgard
- Sarah W. Stedman Nutrition and Metabolism Center, Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC 27710, USA
- 3Department of Pharmacology and Cancer Biology, and Department of Medicine, Endocrine Division, Duke University Medical Center, Durham, NC 27701, USA
| | - Barbara B Kahn
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
- Correspondence: Barbara B Kahn, MD, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA. E-mail:
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21
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Bennett CF, O’Malley KE, Perry EA, Balsa E, Latorre-Muro P, Riley CL, Luo C, Jedrychowski M, Gygi SP, Puigserver P. Peroxisomal-derived ether phospholipids link nucleotides to respirasome assembly. Nat Chem Biol 2021; 17:703-710. [PMID: 33723432 PMCID: PMC8159895 DOI: 10.1038/s41589-021-00772-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/11/2021] [Indexed: 02/07/2023]
Abstract
The protein complexes of the mitochondrial electron transport chain exist in isolation and in higher order assemblies termed supercomplexes (SCs) or respirasomes (SC I+III2+IV). The association of complexes I, III and IV into the respirasome is regulated by unknown mechanisms. Here, we designed a nanoluciferase complementation reporter for complex III and IV proximity to determine in vivo respirasome levels. In a chemical screen, we found that inhibitors of the de novo pyrimidine synthesis enzyme dihydroorotate dehydrogenase (DHODH) potently increased respirasome assembly and activity. By-passing DHODH inhibition via uridine supplementation decreases SC assembly by altering mitochondrial phospholipid composition, specifically elevated peroxisomal-derived ether phospholipids. Cell growth rates upon DHODH inhibition depend on ether lipid synthesis and SC assembly. These data reveal that nucleotide pools signal to peroxisomes to modulate synthesis and transport of ether phospholipids to mitochondria for SC assembly, which are necessary for optimal cell growth in conditions of nucleotide limitation.
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Affiliation(s)
- Christopher F. Bennett
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Katherine E. O’Malley
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Elizabeth A. Perry
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Eduardo Balsa
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Pedro Latorre-Muro
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Christopher L. Riley
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Chi Luo
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Mark Jedrychowski
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Steven P. Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Pere Puigserver
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA,Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA,Correspondence:
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22
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Harley BK, Amponsah IK, Ben IO, Adongo DW, Mireku-Gyimah NA, Baah MK, Mensah AY, Fleischer TC. Myrianthus libericus: Possible mechanisms of hypoglycaemic action and in silico prediction of pharmacokinetics and toxicity profile of its bioactive metabolite, friedelan-3-one. Biomed Pharmacother 2021; 137:111379. [PMID: 33761602 DOI: 10.1016/j.biopha.2021.111379] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/24/2021] [Accepted: 02/08/2021] [Indexed: 11/28/2022] Open
Abstract
The hypoglycaemic and anti-hyperlipidaemic effects of the 70% ethanol stem bark extract of Myrianthus libericus (MLB), used traditionally in the management of diabetes in Ghana, was evaluated in this study using streptozotocin (45 mg/kg)-induced diabetic rats. In vitro hypoglycaemic activities of the extract and one of its principal compounds, friedelan-3-one were then investigated using α-amylase inhibitory and glucose uptake assay in C2C12 myotubes. In silico analysis of the pharmacokinetic and toxicity properties of the compound was also performed. MLB significantly (p < 0.001) reduced the elevated blood glucose levels and corrected considerably (p < 0.01) the altered serum lipid profiles of the diabetic rats which was comparable to glibenclamide (5 mg/kg). Together with friedelan-3-one, the extract markedly inhibited the activity of α-amylase and promoted glucose uptake in C2C12 cells. Whereas MLB significantly (p < 0.001) up-regulated PI3K and PPARγ transcripts with a corresponding increase in GLUT-4 transcripts within the muscle cells, friedelan-3-one only up-regulated PI3K and GLUT-4 transcripts to promote glucose transport. Friedelan-3-one was shown to be non-carcinogenic, non-hepatotoxic, has decent oral bioavailability and a good compound for optimisation into a drug candidate. The study has demonstrated that MLB possess hypoglycaemic and anti-hyperlipidaemic activities and could be used as a therapeutic agent in the management of diabetes mellitus.
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Affiliation(s)
- Benjamin Kingsley Harley
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana.
| | - Isaac Kingsley Amponsah
- Department of Pharmacognosy, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Inemesit Okon Ben
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
| | - Donatus Wewura Adongo
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
| | - Nana Ama Mireku-Gyimah
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy, University of Ghana, Legon, Ghana
| | - Michael Kwesi Baah
- Department of Herbal Medicine, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Abraham Yeboah Mensah
- Department of Pharmacognosy, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Theophilus Christian Fleischer
- Department of Pharmacognosy and Herbal Medicine, School of Pharmacy, University of Health and Allied Sciences, Ho, Ghana
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23
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Sartori R, Romanello V, Sandri M. Mechanisms of muscle atrophy and hypertrophy: implications in health and disease. Nat Commun 2021; 12:330. [PMID: 33436614 PMCID: PMC7803748 DOI: 10.1038/s41467-020-20123-1] [Citation(s) in RCA: 324] [Impact Index Per Article: 108.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 11/16/2020] [Indexed: 02/07/2023] Open
Abstract
Skeletal muscle is the protein reservoir of our body and an important regulator of glucose and lipid homeostasis. Consequently, the growth or the loss of muscle mass can influence general metabolism, locomotion, eating and respiration. Therefore, it is not surprising that excessive muscle loss is a bad prognostic index of a variety of diseases ranging from cancer, organ failure, infections and unhealthy ageing. Muscle function is influenced by different quality systems that regulate the function of contractile proteins and organelles. These systems are controlled by transcriptional dependent programs that adapt muscle cells to environmental and nutritional clues. Mechanical, oxidative, nutritional and energy stresses, as well as growth factors or cytokines modulate signaling pathways that, ultimately, converge on protein and organelle turnover. Novel insights that control and orchestrate such complex network are continuously emerging and will be summarized in this review. Understanding the mechanisms that control muscle mass will provide therapeutic targets for the treatment of muscle loss in inherited and non-hereditary diseases and for the improvement of the quality of life during ageing. Loss of muscle mass is associated with ageing and with a number of diseases such as cancer. Here, the authors review the signaling pathways that modulate protein synthesis and degradation and gain or loss of muscle mass, and discuss therapeutic implications and future directions for the field.
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Affiliation(s)
- Roberta Sartori
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/b, 35121, Padova, Italy.,Veneto Institute of Molecular Medicine, via Orus 2, 35129, Padova, Italy
| | - Vanina Romanello
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/b, 35121, Padova, Italy. .,Veneto Institute of Molecular Medicine, via Orus 2, 35129, Padova, Italy.
| | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/b, 35121, Padova, Italy. .,Veneto Institute of Molecular Medicine, via Orus 2, 35129, Padova, Italy. .,Myology Center, University of Padova, via Ugo Bassi 58/b, 35121, Padova, Italy. .,Department of Medicine, McGill University, Montreal, Canada.
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24
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Wang Y, Tang B, Long L, Luo P, Xiang W, Li X, Wang H, Jiang Q, Tan X, Luo S, Li H, Wang Z, Chen Z, Leng Y, Jiang Z, Wang Y, Ma L, Wang R, Zeng C, Liu Z, Wang Y, Miao H, Shi C. Improvement of obesity-associated disorders by a small-molecule drug targeting mitochondria of adipose tissue macrophages. Nat Commun 2021; 12:102. [PMID: 33397994 PMCID: PMC7782823 DOI: 10.1038/s41467-020-20315-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 11/25/2020] [Indexed: 12/20/2022] Open
Abstract
Pro-inflammatory activation of adipose tissue macrophages (ATMs) is causally linked to obesity and obesity-associated disorders. A number of studies have demonstrated the crucial role of mitochondrial metabolism in macrophage activation. However, there is a lack of pharmaceutical agents to target the mitochondrial metabolism of ATMs for the treatment of obesity-related diseases. Here, we characterize a near-infrared fluorophore (IR-61) that preferentially accumulates in the mitochondria of ATMs and has a therapeutic effect on diet-induced obesity as well as obesity-associated insulin resistance and fatty liver. IR-61 inhibits the classical activation of ATMs by increasing mitochondrial complex levels and oxidative phosphorylation via the ROS/Akt/Acly pathway. Taken together, our findings indicate that specific enhancement of ATMs oxidative phosphorylation improves chronic inflammation and obesity-related disorders. IR-61 might be an anti-inflammatory agent useful for the treatment of obesity-related diseases by targeting the mitochondria of ATMs. Adipose tissue macrophages are central to controlling inflammation in the context of obesity. Here the authors present a new infrared dye (IR-61) that accumulates in the mitochondria of these cells resulting in anti-inflammatory effects that counter obesity-associated pathology in mice.
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Affiliation(s)
- Yawei Wang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Binlin Tang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China.,Oncology Department, The General Hospital of Western Theater Command, Chengdu, Sichuan, 610083, China
| | - Lei Long
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Peng Luo
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Wei Xiang
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, 400038, China
| | - Xueru Li
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Huilan Wang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China.,Department of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Qingzhi Jiang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China.,Department of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Xu Tan
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Shenglin Luo
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Huijuan Li
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Ziwen Wang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Zelin Chen
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Yu Leng
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Zhongyong Jiang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Yang Wang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Le Ma
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Rui Wang
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Zujuan Liu
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China
| | - Yu Wang
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China.
| | - Hongming Miao
- Department of Biochemistry and Molecular Biology, Third Military Medical University, Chongqing, 400038, China.
| | - Chunmeng Shi
- Institute of Rocket Force Medicine, State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, 400038, China.
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25
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Pinto PR, Yoshinaga MY, Del Bianco V, Bochi AP, Ferreira GS, Pinto IFD, Rodrigues LG, Nakandakare ER, Okamoto MM, Machado UF, Miyamoto S, Catanozi S, Passarelli M. Dietary sodium restriction alters muscle lipidomics that relates to insulin resistance in mice. J Biol Chem 2021; 296:100344. [PMID: 33524391 PMCID: PMC7949138 DOI: 10.1016/j.jbc.2021.100344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 12/15/2022] Open
Abstract
A low-sodium (LS) diet has been shown to reduce blood pressure (BP) and the incidence of cardiovascular diseases. However, severe dietary sodium restriction promotes insulin resistance (IR) and dyslipidemia in animal models and humans. Thus, further clarification of the long-term consequences of LS is needed. Here, we investigated the effects of chronic LS on gastrocnemius gene and protein expression and lipidomics and its association with IR and plasma lipids in LDL receptor knockout mice. Three-month-old male mice were fed a normal sodium diet (NS; 0.5% Na; n = 12-19) or LS (0.06% Na; n = 14-20) over 90 days. Body mass (BM), BP, plasma total cholesterol, triacylglycerol (TG), glucose, hematocrit, and IR were evaluated. LS increased BM (9%), plasma TG (51%), blood glucose (19%), and IR (46%) when compared with the NS. RT-qPCR analysis revealed that genes involved in lipid uptake and oxidation were increased by the LS: Fabp3 (106%), Prkaa1 (46%), and Cpt1 (74%). Genes and proteins (assessed by Western blotting) involved in insulin signaling were not changed by the LS. Similarly, lipid species classically involved in muscle IR, such as diacylglycerols and ceramides detected by ultra-high-performance liquid chromatography coupled to mass spectrometry, were also unchanged by LS. Species of phosphatidylcholines (68%), phosphatidylinositol (90%), and free fatty acids (59%) increased while cardiolipins (41%) and acylcarnitines (9%) decreased in gastrocnemius in response to LS and were associated with glucose disposal rate. Together these results suggest that chronic LS alters glycerophospholipid and fatty acids species in gastrocnemius that may contribute to glucose and lipid homeostasis derangements in mice.
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Affiliation(s)
- Paula Ramos Pinto
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marcos Y Yoshinaga
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Vanessa Del Bianco
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ana Paula Bochi
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Guilherme S Ferreira
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Isabella F D Pinto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Letícia G Rodrigues
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Edna R Nakandakare
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Maristela M Okamoto
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Ubiratan F Machado
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Sayuri Miyamoto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Sergio Catanozi
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marisa Passarelli
- Laboratório de Lípides (LIM-10), Hospital das Clínicas (HCFMUSP) da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil; Programa de Pós-Graduação em Medicina, Universidade Nove de Julho, São Paulo, Brazil.
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26
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Wang C, Zhu X, Cui Y, Miao H, Xu Y, Xiong X, Tang X, Shao L, Zhang Y. Serum proteome-wide identified ATP citrate lyase as a novel informative diagnostic and prognostic biomarker in pediatric sepsis: A pilot study. IMMUNITY INFLAMMATION AND DISEASE 2020; 9:389-397. [PMID: 33378581 PMCID: PMC8127565 DOI: 10.1002/iid3.399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 12/29/2022]
Abstract
Introduction ATP citrate lyase (ACLY) is involved in lipid metabolism and inflammatory response in immune cells. However, the serum level of ACLY and its clinical relevance in sepsis is totally unknown. Methods We conducted a prospective pilot study in patients with sepsis admitted to pediatric intensive care unit (PICU) from January 2018 to December 2018. Results Higher levels of ACLY were detected in sera of pediatric patients with sepsis than that of healthy children. The area under the receiver operating characteristic curve (AUC) of ACLY for diagnosis of sepsis was 0.855 (95% confidence interval [CI]: 0757–0.952), and an AUC of ACLY for predicting PICU mortality was 0.770 (95% CI: 0.626–0.915). ACLY levels ≤21 ng/ml on PICU admission predicted an unfavorable prognosis among patients with sepsis with a sensitivity of 87.5% and a specificity of 67.6%. Moreover, serum ACLY levels were correlated to platelet count, IL‐18 levels, and monocyte counts in pediatric patients with sepsis, implying the potential roles of ACLY in immunometabolic regulation in sepsis. Conclusions ACLY is firstly identified in sera of patients with sepsis. Serum ACLY level is an additional diagnostic and prognostic biomarker in pediatric patients with sepsis.
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Affiliation(s)
- Chunxia Wang
- Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, China.,Clinical Research Unit, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaodong Zhu
- Department of Pediatric Critical Care Medicine, Xinhua Hospital Affiliated to the Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - Yun Cui
- Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Huijie Miao
- Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yaya Xu
- Department of Pediatric Critical Care Medicine, Xinhua Hospital Affiliated to the Medical School of Shanghai Jiao Tong University, Shanghai, China
| | - Xi Xiong
- Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaomeng Tang
- Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, China
| | - Lujing Shao
- Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, China
| | - Yucai Zhang
- Department of Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Pediatric Critical Care, Shanghai Jiao Tong University, Shanghai, China.,Institute of Pediatric Infection, Immunity, and Critical Care Medicine, Shanghai Children's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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27
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Scherbakov D, Duscha S, Juskeviciene R, Restelli L, Frank S, Laczko E, Boettger EC. Mitochondrial misreading in skeletal muscle accelerates metabolic aging and confers lipid accumulation and increased inflammation. RNA (NEW YORK, N.Y.) 2020; 27:rna.077347.120. [PMID: 33262249 PMCID: PMC7901843 DOI: 10.1261/rna.077347.120] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
We have recently reported on an experimental model of mitochondrial mistranslation conferred by amino acid exchange V338Y in the mitochondrial ribosomal protein MrpS5. Here we used a combination of RNA-Seq and metabolic profiling of homozygous transgenic MrpS5V338Y/V338Y mice to analyze the changes associated with the V338Y mutation in post-mitotic skeletal muscle. Metabolic profiling demonstrated age-dependent metabolic changes in the mutant V338Y animals, which included enhanced levels of age-associated metabolites and which were accompanied by increased glycolysis, lipid desaturation and eicosanoid biosynthesis, and alterations of the pentose phosphate pathway. In addition, transcriptome signatures of aged V338Y mutant muscle pointed to elevated inflammation, likely reflecting the increased levels of bioactive lipids. Our findings indicate that mistranslation-mediated chronic impairment of mitochondrial function affects specific bioenergetic processes in muscle in an age-dependent manner.
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28
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Vainshtein A, Sandri M. Signaling Pathways That Control Muscle Mass. Int J Mol Sci 2020; 21:ijms21134759. [PMID: 32635462 PMCID: PMC7369702 DOI: 10.3390/ijms21134759] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/23/2020] [Accepted: 07/01/2020] [Indexed: 12/12/2022] Open
Abstract
The loss of skeletal muscle mass under a wide range of acute and chronic maladies is associated with poor prognosis, reduced quality of life, and increased mortality. Decades of research indicate the importance of skeletal muscle for whole body metabolism, glucose homeostasis, as well as overall health and wellbeing. This tissue’s remarkable ability to rapidly and effectively adapt to changing environmental cues is a double-edged sword. Physiological adaptations that are beneficial throughout life become maladaptive during atrophic conditions. The atrophic program can be activated by mechanical, oxidative, and energetic distress, and is influenced by the availability of nutrients, growth factors, and cytokines. Largely governed by a transcription-dependent mechanism, this program impinges on multiple protein networks including various organelles as well as biosynthetic and quality control systems. Although modulating muscle function to prevent and treat disease is an enticing concept that has intrigued research teams for decades, a lack of thorough understanding of the molecular mechanisms and signaling pathways that control muscle mass, in addition to poor transferability of findings from rodents to humans, has obstructed efforts to develop effective treatments. Here, we review the progress made in unraveling the molecular mechanisms responsible for the regulation of muscle mass, as this continues to be an intensive area of research.
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Affiliation(s)
| | - Marco Sandri
- Veneto Institute of Molecular Medicine, via Orus 2, 35129 Padua, Italy
- Department of Biomedical Science, University of Padua, via G. Colombo 3, 35100 Padua, Italy
- Myology Center, University of Padua, via G. Colombo 3, 35100 Padova, Italy
- Department of Medicine, McGill University, Montreal, QC H3A 0G4, Canada
- Correspondence:
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29
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Chen W, Zai W, Fan J, Zhang X, Zeng X, Luan J, Wang Y, Shen Y, Wang Z, Dai S, Fang S, Zhao Z, Ju D. Interleukin-22 drives a metabolic adaptive reprogramming to maintain mitochondrial fitness and treat liver injury. Theranostics 2020; 10:5879-5894. [PMID: 32483425 PMCID: PMC7254999 DOI: 10.7150/thno.43894] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/15/2020] [Indexed: 12/13/2022] Open
Abstract
Rationale: Interleukin 22 (IL-22) is an epithelial survival cytokine that is at present being explored as therapeutic agents for acute and chronic liver injury. However, its molecular basis of protective activities remains poorly understood. Methods: Here we demonstrate that IL-22 inhibits the deteriorating metabolic states induced by stimuli in hepatocytes. Utilizing cell biological, molecular, and biochemical approaches, we provide evidence that IL-22 promotes oxidative phosphorylation (OXPHOS) and glycolysis and regulates the metabolic reprogramming related transcriptional responses. Results: IL-22 controls metabolic regulators and enzymes activity through the induction of AMP-activated protein kinase (AMPK), AKT and mammalian target of rapamycin (mTOR), thereby ameliorating mitochondrial dysfunction. The upstream effector lncRNA H19 also participates in the controlling of these metabolic processes in hepatocytes. Importantly, amelioration of liver injury by IL-22 through activation of metabolism relevant signaling and regulation of mitochondrial function are further demonstrated in cisplatin-induced liver injury and steatohepatitis. Conclusions: Collectively, our results reveal a novel mechanism underscoring the regulation of metabolic profiles of hepatocytes by IL-22 during liver injury, which might provide useful insights from the bench to the clinic in treating and preventing liver diseases.
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Affiliation(s)
- Wei Chen
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
- Department of Ophthalmology, Stanford University School of Medicine, Palo Alto CA 94304, USA
| | - Wenjing Zai
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
- Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences, Shanghai Medical College of Fudan University
| | - Jiajun Fan
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
| | - Xuyao Zhang
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
| | - Xian Zeng
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
| | - Jingyun Luan
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
| | - Yichen Wang
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
| | - Yilan Shen
- Department of Nephrology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Ziyu Wang
- Department of Pharmacy, Huadong Hospital, Fudan University, Shanghai, China
| | - Shixuan Dai
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
| | - Si Fang
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
- Tongcheng Hospital of Traditional Chinese Medicine, Anhui 231400, P. R. China
| | - Zhen Zhao
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
| | - Dianwen Ju
- Minhang Hospital & Shanghai Engineering Research Center of Immunotherapeutics, School of Pharmacy, Fudan University, Shanghai, China
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30
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Kestenbaum B, Gamboa J, Liu S, Ali AS, Shankland E, Jue T, Giulivi C, Smith LR, Himmelfarb J, de Boer IH, Conley K, Roshanravan B. Impaired skeletal muscle mitochondrial bioenergetics and physical performance in chronic kidney disease. JCI Insight 2020; 5:133289. [PMID: 32161192 PMCID: PMC7141399 DOI: 10.1172/jci.insight.133289] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 12/10/2019] [Indexed: 11/17/2022] Open
Abstract
The maintenance of functional independence is the top priority of patients with chronic kidney disease (CKD). Defects in mitochondrial energetics may compromise physical performance and independence. We investigated associations of the presence and severity of kidney disease with in vivo muscle energetics and the association of muscle energetics with physical performance. We performed measures of in vivo leg and hand muscle mitochondrial capacity (ATPmax) and resting ATP turnover (ATPflux) using 31phosphorus magnetic resonance spectroscopy and oxygen uptake (O2 uptake) by optical spectroscopy in 77 people (53 participants with CKD and 24 controls). We measured physical performance using the 6-minute walk test. Participants with CKD had a median estimated glomerular filtration rate (eGFR) of 33 ml/min per 1.73 m2. Participants with CKD had a -0.19 mM/s lower leg ATPmax compared with controls but no difference in hand ATPmax. Resting O2 uptake was higher in CKD compared with controls, despite no difference in ATPflux. ATPmax correlated with eGFR and serum bicarbonate among participants with GFR <60. ATPmax of the hand and leg correlated with 6-minute walking distance. The presence and severity of CKD associate with muscle mitochondrial capacity. Dysfunction of muscle mitochondrial energetics may contribute to reduced physical performance in CKD.
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Affiliation(s)
- Bryan Kestenbaum
- Division of Nephrology, Department of Medicine, and
- Kidney Research Institute, University of Washington, Seattle, Washington, USA
| | - Jorge Gamboa
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Sophia Liu
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Amir S. Ali
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Eric Shankland
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Thomas Jue
- Department of Biochemistry and Molecular Medicine, School of Medicine
| | - Cecilia Giulivi
- Department of Molecular Biosciences, School of Veterinary Medicine, and
| | - Lucas R. Smith
- Department of Physical Medicine and Rehabilitation, School of Medicine, UCD, Davis, California, USA
| | - Jonathan Himmelfarb
- Division of Nephrology, Department of Medicine, and
- Kidney Research Institute, University of Washington, Seattle, Washington, USA
| | - Ian H. de Boer
- Division of Nephrology, Department of Medicine, and
- Kidney Research Institute, University of Washington, Seattle, Washington, USA
- Puget Sound Veterans Administration Healthcare System, Seattle, Washington, USA
| | - Kevin Conley
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Baback Roshanravan
- Division of Nephrology, Department of Medicine, School of Medicine, UCD, Sacramento, California, USA
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31
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Funai K, Summers SA, Rutter J. Reign in the membrane: How common lipids govern mitochondrial function. Curr Opin Cell Biol 2020; 63:162-173. [PMID: 32106003 DOI: 10.1016/j.ceb.2020.01.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 12/09/2019] [Accepted: 01/07/2020] [Indexed: 12/12/2022]
Abstract
The lipids that make up biological membranes tend to be the forgotten molecules of cell biology. The paucity of data on these important entities likely reflects the difficulties of studying and understanding their biological roles, rather than revealing a lack of importance. Indeed, the lipid composition of biological membranes has a profound impact on a diverse array of cellular processes. The focus of this review is on the effects of different lipid classes on the function of mitochondria, particularly bioenergetics, in health and disease.
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Affiliation(s)
- Katsuhiko Funai
- Diabetes & Metabolism Research Center, University of Utah, Salt Lake City, UT, USA; Department of Physical Therapy & Athletic Training, University of Utah, Salt Lake City, UT, USA; Department of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT, USA.
| | - Scott A Summers
- Diabetes & Metabolism Research Center, University of Utah, Salt Lake City, UT, USA; Department of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT, USA; Department of Biochemistry, University of Utah, Salt Lake City, UT, USA.
| | - Jared Rutter
- Diabetes & Metabolism Research Center, University of Utah, Salt Lake City, UT, USA; Department of Nutrition & Integrative Physiology, University of Utah, Salt Lake City, UT, USA; Department of Biochemistry, University of Utah, Salt Lake City, UT, USA; Howard Hughes Medical Institute, University of Utah, Salt Lake City, UT, USA.
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32
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El-Hafidi M, Correa F, Zazueta C. Mitochondrial dysfunction in metabolic and cardiovascular diseases associated with cardiolipin remodeling. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165744. [PMID: 32105822 DOI: 10.1016/j.bbadis.2020.165744] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/21/2020] [Accepted: 02/20/2020] [Indexed: 02/07/2023]
Abstract
Cardiolipin (CL) is an acidic phospholipid almost exclusively found in the inner mitochondrial membrane, that not only stabilizes the structure and function of individual components of the mitochondrial electron transport chain, but regulates relevant mitochondrial processes, like mitochondrial dynamics and cristae structure maintenance among others. Alterations in CL due to peroxidation, correlates with loss of such mitochondrial activities and disease progression. In this review it is recapitulated the current state of knowledge of the role of cardiolipin remodeling associated with mitochondrial dysfunction in metabolic and cardiovascular diseases.
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Affiliation(s)
- Mohammed El-Hafidi
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología I. Ch. 14080, Ciudad de México, México
| | - Francisco Correa
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología I. Ch. 14080, Ciudad de México, México
| | - Cecilia Zazueta
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología I. Ch. 14080, Ciudad de México, México.
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33
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Guo W, Ma J, Yang Y, Guo S, Zhang W, Zhao T, Yi X, Wang H, Wang S, Liu Y, Dai W, Chen X, Shi Q, Wang G, Gao T, Li C. ATP-Citrate Lyase Epigenetically Potentiates Oxidative Phosphorylation to Promote Melanoma Growth and Adaptive Resistance to MAPK Inhibition. Clin Cancer Res 2020; 26:2725-2739. [PMID: 32034077 DOI: 10.1158/1078-0432.ccr-19-1359] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 09/12/2019] [Accepted: 02/04/2020] [Indexed: 11/16/2022]
Affiliation(s)
- Weinan Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jinyuan Ma
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yuqi Yang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Weigang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Tao Zhao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Huina Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Shiyu Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yu Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wei Dai
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xuguang Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Qiong Shi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
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34
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Duan Y, Zhong Y, Song B, Zheng C, Xu K, Kong X, Li F. Suppression of protein degradation by leucine requires its conversion to β-hydroxy-β-methyl butyrate in C2C12 myotubes. Aging (Albany NY) 2019; 11:11922-11936. [PMID: 31881014 PMCID: PMC6949090 DOI: 10.18632/aging.102509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 11/18/2019] [Indexed: 05/05/2023]
Abstract
The aims of this study were to investigate whether the inhibitory effect of Leucine (Leu) on starvation-induced protein degradation was mediated by its metabolite β-hydroxy-β-methyl butyrate (HMB), and to explore the mechanisms involved. The results showed that the beneficial effects of Leu on protein degradation and the oxygen consumption rate (OCR) of cells were observed at low levels (0.5 mM) rather than at high levels (10 mM). However, these effects were inferior to those of HMB. Moreover, HMB was able to increase/decrease the proportion of MyHC I/MyHC IIb protein expression, respectively. In these KICD-transfected cells, Leu was approximately as effective as HMB in inhibiting protein degradation and increasing the OCR as well as MyHC I protein expression of cells, and these effects of Leu were reverted to a normal state by mesotrione, a specific suppressor of KICD. In conclusion, HMB seems to be an active metabolite of Leu to suppress muscle protein degradation in a starvation model, and the mechanisms may be associated with improved mitochondrial oxidative capacity in muscle cells.
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Affiliation(s)
- Yehui Duan
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Yinzhao Zhong
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Bo Song
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Changbing Zheng
- Guangdong Provincial Key Laboratory of Animal Nutrition Regulation, South China Agricultural University, Guangzhou, Guangdong, China
| | - Kang Xu
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Xiangfeng Kong
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, P. R. China
| | - Fengna Li
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Changsha, Hunan, P. R. China
- Hunan Co-Innovation Center of Animal Production Safety, CICAPS, Hunan Collaborative Innovation Center for Utilization of Botanical Functional Ingredients, Changsha, Hunan, China
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35
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The vital role of ATP citrate lyase in chronic diseases. J Mol Med (Berl) 2019; 98:71-95. [PMID: 31858156 DOI: 10.1007/s00109-019-01863-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 02/07/2023]
Abstract
Chronic or non-communicable diseases are the leading cause of death worldwide; they usually result in long-term illnesses and demand long-term care. Despite advances in molecular therapeutics, specific biomarkers and targets for the treatment of these diseases are required. The dysregulation of de novo lipogenesis has been found to play an essential role in cell metabolism and is associated with the development and progression of many chronic diseases; this confirms the link between obesity and various chronic diseases. The main enzyme in this pathway-ATP-citrate lyase (ACLY), a lipogenic enzyme-catalyzes the critical reaction linking cellular glucose catabolism and lipogenesis. Increasing lines of evidence suggest that the modulation of ACLY expression correlates with the development and progressions of various chronic diseases such as neurodegenerative diseases, cardiovascular diseases, diabetes, obesity, inflammation, and cancer. Recent studies suggest that the inhibition of ACLY activity modulates the glycolysis and lipogenesis processes and stimulates normal physiological functions. This comprehensive review aimed to critically evaluate the role of ACLY in the development and progression of different diseases and the effects of its downregulation in the prevention and treatment of these diseases.
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36
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Purohit G, Dhawan J. Adult Muscle Stem Cells: Exploring the Links Between Systemic and Cellular Metabolism. Front Cell Dev Biol 2019; 7:312. [PMID: 31921837 PMCID: PMC6915107 DOI: 10.3389/fcell.2019.00312] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 11/15/2019] [Indexed: 12/13/2022] Open
Abstract
Emerging evidence suggests that metabolites are important regulators of skeletal muscle stem cell (MuSC) function and fate. While highly proliferative in early life, MuSCs reside in adult skeletal muscle tissue in a quiescent and metabolically depressed state, but are critical for the homeostatic maintenance and regenerative response of the tissue to damage. It is well established that metabolic activity in MuSC changes with their functional activation, but the spatiotemporal links between physiological metabolism and stem cell metabolism require explicit delineation. The quiescent MuSC is defined by a specific metabolic state, which is controlled by intrinsic and extrinsic factors during physiological and pathological tissue dynamics. However, the extent of tissue and organismal level changes driven by alteration in metabolic state of quiescent MuSC is currently not well defined. In addition to their role as biosynthetic precursors and signaling molecules, metabolites are key regulators of epigenetic mechanisms. Emerging evidence points to metabolic control of epigenetic mechanisms in MuSC and their impact on muscle regenerative capacity. In this review, we explore the links between cell-intrinsic, tissue level, and systemic metabolic state in the context of MuSC metabolic state, quiescence, and tissue homeostasis to highlight unanswered questions.
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Affiliation(s)
- Gunjan Purohit
- Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Jyotsna Dhawan
- Centre for Cellular and Molecular Biology, Hyderabad, India
- Institute for Stem Cell Science and Regenerative Medicine, Bengaluru, India
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37
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Sidoli S, Trefely S, Garcia BA, Carrer A. Integrated Analysis of Acetyl-CoA and Histone Modification via Mass Spectrometry to Investigate Metabolically Driven Acetylation. Methods Mol Biol 2019; 1928:125-147. [PMID: 30725455 DOI: 10.1007/978-1-4939-9027-6_9] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Acetylation is a highly abundant and dynamic post-translational modification (PTM) on histone proteins which, when present on chromatin-bound histones, facilitates the accessibility of DNA for gene transcription. The central metabolite, acetyl-CoA, is a substrate for acetyltransferases, which catalyze protein acetylation. Acetyl-CoA is an essential intermediate in diverse metabolic pathways, and cellular acetyl-CoA levels fluctuate according to extracellular nutrient availability and the metabolic state of the cell. The Michaelis constant (Km) of most histone acetyltransferases (HATs), which specifically target histone proteins, falls within the range of cellular acetyl-CoA concentrations. As a consequence, global levels of histone acetylation are often restricted by availability of acetyl-CoA. Such metabolic regulation of histone acetylation is important for cell proliferation, differentiation, and a variety of cellular functions. In cancer, numerous oncogenic signaling events hijack cellular metabolism, ultimately inducing an extensive rearrangement of the epigenetic state of the cell. Understanding metabolic control of the epigenome through histone acetylation is essential to illuminate the molecular mechanisms by which cells sense, adapt, and occasionally disengage nutrient fluctuations and environmental cues from gene expression. In particular, targeting metabolic regulators or even dietary interventions to impact acetyl-CoA availability and histone acetylation is a promising target in cancer therapy. Liquid chromatography coupled to mass spectrometry (LC-MS) is the most accurate methodology to quantify protein PTMs and metabolites. In this chapter, we present state-of-the-art protocols to analyze histone acetylation and acetyl-CoA. Histones are extracted and digested into short peptides (4-20 aa) prior to LC-MS. Acetyl-CoA is extracted from cells and analyzed using an analogous mass spectrometry-based procedure. Model systems can be fed with isotopically labeled substrates to investigate the metabolic preference for acetyl-CoA production and the metabolic dependence and turnover of histone acetylation. We also present an example of data integration to correlate changes in acetyl-CoA production with histone acetylation.
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Affiliation(s)
- Simone Sidoli
- Department of Biochemistry and Biophysics, Perelman School of Medicine, Epigenetics Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Sophie Trefely
- Department of Cancer Biology, Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA, USA.,A. J. Drexel Autism Institute, Drexel University, Philadelphia, PA, USA
| | - Benjamin A Garcia
- Department of Biochemistry and Biophysics, Perelman School of Medicine, Epigenetics Institute, University of Pennsylvania, Philadelphia, PA, USA
| | - Alessandro Carrer
- Department of Cancer Biology, Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA, USA.
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38
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Morciano P, Di Giorgio ML, Porrazzo A, Licursi V, Negri R, Rong Y, Cenci G. Depletion of ATP-Citrate Lyase (ATPCL) Affects Chromosome Integrity Without Altering Histone Acetylation in Drosophila Mitotic Cells. Front Physiol 2019; 10:383. [PMID: 31019471 PMCID: PMC6458238 DOI: 10.3389/fphys.2019.00383] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 03/21/2019] [Indexed: 12/13/2022] Open
Abstract
The Citrate Lyase (ACL) is the main cytosolic enzyme that converts the citrate exported from mitochondria by the SLC25A1 carrier in Acetyl Coenzyme A (acetyl-CoA) and oxaloacetate. Acetyl-CoA is a high-energy intermediate common to a large number of metabolic processes including protein acetylation reactions. This renders ACL a key regulator of histone acetylation levels and gene expression in diverse organisms including humans. We have found that depletion of ATPCL, the Drosophila ortholog of human ACL, reduced levels of Acetyl CoA but, unlike its human counterpart, does not affect global histone acetylation and gene expression. Nevertheless, reduced ATPCL levels caused evident, although moderate, mitotic chromosome breakage suggesting that this enzyme plays a partial role in chromosome stability. These defects did not increase upon X-ray irradiation, indicating that they are not dependent on an impairment of DNA repair. Interestingly, depletion of ATPCL drastically increased the frequency of chromosome breaks (CBs) associated to mutations in scheggia, which encodes the ortholog of the mitochondrial citrate carrier SLC25A1 that is also required for chromosome integrity and histone acetylation. Our results indicate that ATPCL has a dispensable role in histone acetylation and prevents massive chromosome fragmentation when citrate efflux is altered.
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Affiliation(s)
- Patrizia Morciano
- Dipartimento di Biologia e Biotecnologie "Charles Darwin", Sapienza - Università di Roma, Rome, Italy
| | - Maria Laura Di Giorgio
- Dipartimento di Biologia e Biotecnologie "Charles Darwin", Sapienza - Università di Roma, Rome, Italy
| | - Antonella Porrazzo
- Dipartimento di Biologia e Biotecnologie "Charles Darwin", Sapienza - Università di Roma, Rome, Italy.,Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy
| | - Valerio Licursi
- Istituto di Analisi dei Sistemi ed Informatica "Antonio Ruberti", Consiglio Nazionale delle Ricerche, Rome, Italy
| | - Rodolfo Negri
- Dipartimento di Biologia e Biotecnologie "Charles Darwin", Sapienza - Università di Roma, Rome, Italy.,Istituto di Biologia e Patologia Molecolari (IBPM) del CNR, Rome, Italy
| | - Yikang Rong
- School of Life Sciences, State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, China
| | - Giovanni Cenci
- Dipartimento di Biologia e Biotecnologie "Charles Darwin", Sapienza - Università di Roma, Rome, Italy.,Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy
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39
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Fornes R, Manti M, Qi X, Vorontsov E, Sihlbom C, Nyström J, Jerlhag E, Maliqueo M, Hirschberg AL, Carlström M, Benrick A, Stener-Victorin E. Mice exposed to maternal androgen excess and diet-induced obesity have altered phosphorylation of catechol-O-methyltransferase in the placenta and fetal liver. Int J Obes (Lond) 2019; 43:2176-2188. [PMID: 30670847 DOI: 10.1038/s41366-018-0314-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 11/19/2018] [Accepted: 12/19/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND/OBJECTIVES Maternal obesity together with androgen excess in mice negatively affects placental function and maternal and fetal liver function as demonstrated by increased triglyceride content with dysfunctional expression of enzymes and transcription factors involved in de novo lipogenesis and fat storage. To identify changes in molecular pathways that might promote diseases in adulthood, we performed a global proteomic analysis using a liquid-chromatography/mass-spectrometry system to investigate total and phosphorylated proteins in the placenta and fetal liver in a mouse model that combines maternal obesity with maternal androgen excess. METHODS After ten weeks on a control diet (CD) or high fat/high sugar-diet, dams were mated with males fed the CD. Between gestational day (GD) 16.5 and GD 18.5, mice were injected with vehicle or dihydrotestosterone (DHT) and sacrificed at GD 18.5 prior to dissection of the placentas and fetal livers. Four pools of female placentas and fetal livers were subjected to a global proteomic analysis. Total and phosphorylated proteins were filtered by ANOVA q < 0.05, and this was followed by two-way ANOVA to determine the effect of maternal obesity and/or androgen exposure. RESULTS In placenta, phosphorylated ATP-citrate synthase was decreased due to maternal obesity, and phosphorylated catechol-O-methyltransferase (COMT) was differentially expressed due to the interaction between maternal diet and DHT exposure. In fetal liver, five total proteins and 48 proteins phosphorylated in one or more sites, were differentially expressed due to maternal obesity or androgen excess. In fetal liver, phosphorylated COMT expression was higher in fetus exposed to maternal obesity. CONCLUSION These results suggest a common regulatory mechanism of catecholamine metabolism in the placenta and the fetal liver as demonstrated by higher phosphorylated COMT expression in the placenta and fetal liver from animals exposed to diet-induced maternal obesity and lower expression of phosphorylated COMT in animals exposed to maternal androgen excess.
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Affiliation(s)
- Romina Fornes
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - Maria Manti
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - Xiaojuan Qi
- Department of Physiology, Qiqihar Medical University, Qiqihar, China
| | - Egor Vorontsov
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Gothenburg, Sweden
| | - Jenny Nyström
- Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Elisabet Jerlhag
- Department of Pharmacology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Manuel Maliqueo
- Endocrinology and Metabolism, Faculty of Medicine, West division, University of Chile, Santiago, Chile
| | | | - Mattias Carlström
- Department of Physiology and Pharmacology, Karolinska Institutet, Solna, Sweden
| | - Anna Benrick
- Department of Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,School of Health and Education, University of Skövde, Skövde, Sweden
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40
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Abstract
Cancer cachexia is a metabolic disease characterized by a negative energy balance associated with systemic weight loss and poor quality of life.In particular, skeletal muscle, which represents almost 50% of the total body mass, is strongly affected, and metabolic alterations therein (e.g., insulin resistance and mitochondrial dysfunction) can eventually support tumor growth by facilitating nutrient scavenging by the growing mass. Interestingly, metabolic interventions on wasting muscle have been proven to be protective, advocating for the importance of metabolic regulation in the wasting muscle.Here, we will briefly define the current knowledge of metabolic regulation in cachexia and provide a protocol to grow and differentiate in vitro myotubes for the assessment of mitochondrial metabolism during cachexia.
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Affiliation(s)
- Myriam Y Hsu
- Department of Molecular Biotechnology and Health Science, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Paolo E Porporato
- Department of Molecular Biotechnology and Health Science, Molecular Biotechnology Center, University of Torino, Torino, Italy.
| | - Elisabeth Wyart
- Department of Molecular Biotechnology and Health Science, Molecular Biotechnology Center, University of Torino, Torino, Italy
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41
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Das S, Morvan F, Morozzi G, Jourde B, Minetti GC, Kahle P, Rivet H, Brebbia P, Toussaint G, Glass DJ, Fornaro M. ATP Citrate Lyase Regulates Myofiber Differentiation and Increases Regeneration by Altering Histone Acetylation. Cell Rep 2018; 21:3003-3011. [PMID: 29241530 DOI: 10.1016/j.celrep.2017.11.038] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 09/07/2017] [Accepted: 11/10/2017] [Indexed: 01/08/2023] Open
Abstract
ATP citrate lyase (ACL) plays a key role in regulating mitochondrial function, as well as glucose and lipid metabolism in skeletal muscle. We report here that ACL silencing impairs myoblast and satellite cell (SC) differentiation, and it is accompanied by a decrease in fast myosin heavy chain isoforms and MYOD. Conversely, overexpression of ACL enhances MYOD levels and promotes myogenesis. Myogenesis is dependent on transcriptional but also other mechanisms. We show that ACL regulates the net amount of acetyl groups available, leading to alterations in acetylation of H3(K9/14) and H3(K27) at the MYOD locus, thus increasing MYOD expression. ACL overexpression in murine skeletal muscle leads to improved regeneration after cardiotoxin-mediated damage. Thus, our findings suggest a mechanism for regulating SC differentiation and enhancing regeneration, which might be exploited for devising therapeutic approaches for treating skeletal muscle disease.
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Affiliation(s)
- Suman Das
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Frederic Morvan
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Giulio Morozzi
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Benjamin Jourde
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Giulia C Minetti
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Peter Kahle
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Helene Rivet
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Pascale Brebbia
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - Gauthier Toussaint
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland
| | - David J Glass
- Novartis Institutes for Biomedical Research, 181 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Mara Fornaro
- Novartis Institutes for Biomedical Research, Forum 1, Novartis Campus, 4056 Basel, Switzerland.
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42
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Chen LY, Lotz M, Terkeltaub R, Liu-Bryan R. Modulation of matrix metabolism by ATP-citrate lyase in articular chondrocytes. J Biol Chem 2018; 293:12259-12270. [PMID: 29929979 DOI: 10.1074/jbc.ra118.002261] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 06/04/2018] [Indexed: 02/04/2023] Open
Abstract
Certain dysregulated chondrocyte metabolic adaptive responses such as decreased activity of the master regulator of energy metabolism AMP-activated protein kinase (AMPK) promote osteoarthritis (OA). Metabolism intersects with epigenetic and transcriptional responses. Hence, we studied chondrocyte ATP-citrate lyase (ACLY), which generates acetyl-CoA from mitochondrial-derived citrate, and modulates acetylation of histones and transcription factors. We assessed ACLY in normal and OA human knee chondrocytes and cartilages by Western blotting and immunohistochemistry, and quantified acetyl-CoA fluorometrically. We examined histone and transcription factor lysine acetylation by Western blotting, and assessed histone H3K9 and H3K27 occupancy of iNOS, MMP3, and MMP13 promoters by chromatin immunoprecipitation (ChIP) and quantitative PCR (qPCR). We analyzed iNOS, MMP3, MMP13, aggrecan (ACAN), and Col2a1 gene expression by RT-qPCR. Glucose availability regulated ACLY expression and function, nucleocytosolic acetyl-CoA, and histone acetylation. Human knee OA chondrocytes exhibited increased ACLY activation (assessed by Ser-455 phosphorylation), associated with increased H3K9 and H3K27 acetylation. Inhibition of ACLY attenuated IL-1β-induced transcription of iNOS, MMP3, and MMP13 by suppressing acetylation of p65 NF-κB, H3K9, and H3K27, blunted release of NO, MMP3, and MMP13, and also reduced SOX9 acetylation that promoted SOX9 nuclear translocation, leading to increased aggrecan and Col2a1 mRNA expression. ACLY is a novel player involved in regulation of cartilage matrix metabolism. Increased ACLY activity in OA chondrocytes increased nucleocytosolic acetyl-CoA, leading to increased matrix catabolism via dysregulated histone and transcription factor acetylation. Pharmacologic ACLY inhibition in OA chondrocytes globally reverses these changes and stimulates matrix gene expression and AMPK activation, supporting translational investigation in OA.
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Affiliation(s)
- Liang-Yu Chen
- Veterans Affairs San Diego Healthcare System, San Diego, California 92161
| | - Martin Lotz
- The Scripps Research Institute, La Jolla, California 92037
| | - Robert Terkeltaub
- Veterans Affairs San Diego Healthcare System, San Diego, California 92161; Department of Medicine, University of California San Diego, La Jolla, California 92037
| | - Ru Liu-Bryan
- Veterans Affairs San Diego Healthcare System, San Diego, California 92161; Department of Medicine, University of California San Diego, La Jolla, California 92037.
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43
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Li H, Sartorelli V. ATP Citrate Lyase: A New Player Linking Skeletal Muscle Metabolism and Epigenetics. Trends Endocrinol Metab 2018; 29:202-204. [PMID: 29395431 PMCID: PMC5866763 DOI: 10.1016/j.tem.2018.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 01/18/2018] [Indexed: 12/31/2022]
Abstract
Intermediates generated in several metabolic processes are used to regulate transcription through covalent histone and DNA modifications. In Cell Reports, Das et al. show that acetyl-coenzyme A (acetyl-CoA) generated by ATP citrate lyase (ACL) is utilized to acetylate histone H3 at MyoD regulatory regions, resulting in increased MyoD expression and improved muscle regeneration after injury.
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Affiliation(s)
- Haisen Li
- Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis, Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health, Bethesda, MD 20892, USA
| | - Vittorio Sartorelli
- Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis, Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health, Bethesda, MD 20892, USA.
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44
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Update on mitochondria and muscle aging: all wrong roads lead to sarcopenia. Biol Chem 2018; 399:421-436. [DOI: 10.1515/hsz-2017-0331] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 01/19/2018] [Indexed: 12/21/2022]
Abstract
Abstract
Sarcopenia is a well-known geriatric syndrome that has been endorsed over the years as a biomarker allowing for the discrimination, at a clinical level, of biological from chronological age. Multiple candidate mechanisms have been linked to muscle degeneration during sarcopenia. Among them, there is wide consensus on the central role played by the loss of mitochondrial integrity in myocytes, secondary to dysfunctional quality control mechanisms. Indeed, mitochondria establish direct or indirect contacts with other cellular components (e.g. endoplasmic reticulum, peroxisomes, lysosomes/vacuoles) as well as the extracellular environment through the release of several biomolecules. The functional implications of these interactions in the context of muscle physiology and sarcopenia are not yet fully appreciated and represent a promising area of investigation. Here, we present an overview of recent findings concerning the interrelation between mitochondrial quality control processes, inflammation and the metabolic regulation of muscle mass in the pathogenesis of sarcopenia highlighting those pathways that may be exploited for developing preventive and therapeutic interventions against muscle aging.
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45
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Li Y, Jiang Q, Ding Z, Liu G, Yu P, Jiang G, Yu Z, Yang C, Qian J, Jiang H, Zou Y. Identification of a Common Different Gene Expression Signature in Ischemic Cardiomyopathy. Genes (Basel) 2018; 9:genes9010056. [PMID: 29361784 PMCID: PMC5793207 DOI: 10.3390/genes9010056] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/09/2018] [Accepted: 01/16/2018] [Indexed: 01/25/2023] Open
Abstract
The molecular mechanisms underlying the development of ischemic cardiomyopathy (ICM) remain poorly understood. Gene expression profiling is helpful to discover the molecular changes taking place in ICM. The aim of this study was to identify the genes that are significantly changed during the development of heart failure caused by ICM. The differentially expressed genes (DEGs) were identified from 162 control samples and 227 ICM patients. PANTHER was used to perform gene ontology (GO), and Reactome for pathway enrichment analysis. A protein–protein interaction network was established using STRING and Cytoscape. A further validation was performed by real-time polymerase chain reaction (RT-PCR). A total of 255 common DEGs was found. Gene ontology, pathway enrichment, and protein–protein interaction analysis showed that nucleic acid-binding proteins, enzymes, and transcription factors accounted for a great part of the DEGs, while immune system signaling and cytokine signaling displayed the most significant changes. Furthermore, seven hub genes and nine transcription factors were identified. Interestingly, the top five upregulated DEGs were located on chromosome Y, and four of the top five downregulated DEGs were involved in immune and inflammation signaling. Further, the top DEGs were validated by RT-PCR in human samples. Our study explored the possible molecular mechanisms of heart failure caused by ischemic heart disease.
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Affiliation(s)
- Yana Li
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Qiu Jiang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Zhiwen Ding
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Guijian Liu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Peng Yu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Guoliang Jiang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Ziqing Yu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Chunjie Yang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Juying Qian
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Hong Jiang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
- Shanghai Institute of clinical bioinformatics, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
| | - Yunzeng Zou
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital and Institutes of Biomedical Sciences, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
- Institutes of Biomedical Sciences, Fudan University, 130 Dong'an Road, Shanghai 200032, China.
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46
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Guri Y, Colombi M, Dazert E, Hindupur SK, Roszik J, Moes S, Jenoe P, Heim MH, Riezman I, Riezman H, Hall MN. mTORC2 Promotes Tumorigenesis via Lipid Synthesis. Cancer Cell 2017; 32:807-823.e12. [PMID: 29232555 DOI: 10.1016/j.ccell.2017.11.011] [Citation(s) in RCA: 245] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 08/06/2017] [Accepted: 11/14/2017] [Indexed: 12/22/2022]
Abstract
Dysregulated mammalian target of rapamycin (mTOR) promotes cancer, but underlying mechanisms are poorly understood. We describe an mTOR-driven mouse model that displays hepatosteatosis progressing to hepatocellular carcinoma (HCC). Longitudinal proteomic, lipidomics, and metabolomic analyses revealed that hepatic mTORC2 promotes de novo fatty acid and lipid synthesis, leading to steatosis and tumor development. In particular, mTORC2 stimulated sphingolipid (glucosylceramide) and glycerophospholipid (cardiolipin) synthesis. Inhibition of fatty acid or sphingolipid synthesis prevented tumor development, indicating a causal effect in tumorigenesis. Increased levels of cardiolipin were associated with tubular mitochondria and enhanced oxidative phosphorylation. Furthermore, increased lipogenesis correlated with elevated mTORC2 activity and HCC in human patients. Thus, mTORC2 promotes cancer via formation of lipids essential for growth and energy production.
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Affiliation(s)
- Yakir Guri
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | - Marco Colombi
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | - Eva Dazert
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | | | - Jason Roszik
- Departments of Melanoma Medical Oncology and Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Suzette Moes
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | - Paul Jenoe
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | - Markus H Heim
- Department of Biomedicine, University Hospital Basel, 4031 Basel, Switzerland
| | - Isabelle Riezman
- NCCR Chemical Biology, Department of Biochemistry, University of Geneva, 1211 Geneva, Switzerland
| | - Howard Riezman
- NCCR Chemical Biology, Department of Biochemistry, University of Geneva, 1211 Geneva, Switzerland
| | - Michael N Hall
- Biozentrum, University of Basel, 4056 Basel, Switzerland.
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47
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Pinkosky SL, Groot PHE, Lalwani ND, Steinberg GR. Targeting ATP-Citrate Lyase in Hyperlipidemia and Metabolic Disorders. Trends Mol Med 2017; 23:1047-1063. [PMID: 28993031 DOI: 10.1016/j.molmed.2017.09.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 09/06/2017] [Accepted: 09/10/2017] [Indexed: 12/17/2022]
Abstract
Chronic overnutrition and a sedentary lifestyle promote imbalances in metabolism, often manifesting as risk factors for life-threating diseases such as atherosclerotic cardiovascular disease (ASCVD) and nonalcoholic fatty liver disease (NAFLD). Nucleocytosolic acetyl-coenzyme A (CoA) has emerged as a central signaling node used to coordinate metabolic adaptations in response to a changing nutritional status. ATP-citrate lyase (ACL) is the enzyme primarily responsible for the production of extramitochondrial acetyl-CoA and is thus strategically positioned at the intersection of nutrient catabolism and lipid biosynthesis. Here, we discuss recent findings from preclinical studies, as well as Mendelian and clinical randomized trials, demonstrating the importance of ACL activity in metabolism, and supporting its inhibition as a potential therapeutic approach to treating ASCVD, NAFLD, and other metabolic disorders.
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Affiliation(s)
- Stephen L Pinkosky
- Division of Endocrinology and Metabolism, Department of Medicine, 1280 Main Street West, Hamilton, ON, L8N 3Z5, Canada; Esperion Therapeutics, Inc. 3891 Ranchero Drive, Suite 150, Ann Arbor, MI, 48108, USA
| | - Pieter H E Groot
- Esperion Therapeutics, Inc. 3891 Ranchero Drive, Suite 150, Ann Arbor, MI, 48108, USA
| | - Narendra D Lalwani
- Esperion Therapeutics, Inc. 3891 Ranchero Drive, Suite 150, Ann Arbor, MI, 48108, USA
| | - Gregory R Steinberg
- Division of Endocrinology and Metabolism, Department of Medicine, 1280 Main Street West, Hamilton, ON, L8N 3Z5, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8N 3Z5, Canada.
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48
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Theeuwes WF, Gosker HR, Langen RCJ, Verhees KJP, Pansters NAM, Schols AMWJ, Remels AHV. Inactivation of glycogen synthase kinase-3β (GSK-3β) enhances skeletal muscle oxidative metabolism. Biochim Biophys Acta Mol Basis Dis 2017; 1863:3075-3086. [PMID: 28943449 DOI: 10.1016/j.bbadis.2017.09.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/15/2017] [Accepted: 09/19/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND Aberrant skeletal muscle mitochondrial oxidative metabolism is a debilitating feature of chronic diseases such as chronic obstructive pulmonary disease, type 2 diabetes and chronic heart failure. Evidence in non-muscle cells suggests that glycogen synthase kinase-3β (GSK-3β) represses mitochondrial biogenesis and inhibits PPAR-γ co-activator 1 (PGC-1), a master regulator of cellular oxidative metabolism. The role of GSK-3β in the regulation of skeletal muscle oxidative metabolism is unknown. AIMS We hypothesized that inactivation of GSK-3β stimulates muscle oxidative metabolism by activating PGC-1 signaling and explored if GSK-3β inactivation could protect against physical inactivity-induced alterations in skeletal muscle oxidative metabolism. METHODS GSK-3β was modulated genetically and pharmacologically in C2C12 myotubes in vitro and in skeletal muscle in vivo. Wild-type and muscle-specific GSK-3β knock-out (KO) mice were subjected to hind limb suspension for 14days. Key constituents of oxidative metabolism and PGC-1 signaling were investigated. RESULTS In vitro, knock-down of GSK-3β increased mitochondrial DNA copy number, protein and mRNA abundance of oxidative phosphorylation (OXPHOS) complexes and activity of oxidative metabolic enzymes but also enhanced protein and mRNA abundance of key PGC-1 signaling constituents. Similarly, pharmacological inhibition of GSK-3β increased transcript and protein abundance of key constituents and regulators of mitochondrial energy metabolism. Furthermore, GSK-3β KO animals were protected against unloading-induced decrements in expression levels of these constituents. CONCLUSION Inactivation of GSK-3β up-regulates skeletal muscle mitochondrial metabolism and increases expression levels of PGC-1 signaling constituents. In vivo, GSK-3β KO protects against inactivity-induced reductions in muscle metabolic gene expression.
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Affiliation(s)
- W F Theeuwes
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands.
| | - H R Gosker
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - R C J Langen
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - K J P Verhees
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - N A M Pansters
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - A M W J Schols
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Respiratory Medicine, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - A H V Remels
- NUTRIM School of Nutrition and Translational Research in Metabolism, Department of Pharmacology and Toxicology, Maastricht University Medical Center+, Maastricht, The Netherlands
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49
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Qi Z, Xia J, Xue X, Liu J, Liu W, Ding S. Targeting viperin improves diet-induced glucose intolerance but not adipose tissue inflammation. Oncotarget 2017; 8:101418-101436. [PMID: 29254175 PMCID: PMC5731885 DOI: 10.18632/oncotarget.20724] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/02/2017] [Indexed: 12/20/2022] Open
Abstract
Viperin is an interferon-inducible antiviral protein, responsible for antiviral response to a variety of viral infections. Here, we show that silencing viperin by antisense oligonucleotides (ASO) protects against diet-induced glucose intolerance, and yet exacerbates adipose tissue inflammation. In high-fat diet-fed mice, viperin ASO improves glucose homeostasis, reduces plasma triglyceride concentrations and ameliorates diet-induced hepatic steatosis. Peripheral delivery of viperin by adeno-associated virus elevates fasting plasma glucose and insulin concentrations and reduces insulin-stimulated glucose uptake in skeletal muscle. Viperin overexpression reduces epinephrine- stimulated lipolysis in white adipose tissue, whereas viperin ASO increases expression of lipolytic genes. Targeting viperin by antisense oligonucleotides promotes reciprocal regulation of hepatic and adipose lipogenesis by reducing hepatic lipid content and increasing triacylglycerol content in adipose tissue. These findings reveal viperin as an important target to improve glucose metabolism, and suggest that suppressing antiviral potential may improve the metabolic adaptability to high-fat diet.
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Affiliation(s)
- Zhengtang Qi
- The Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai 200241, China.,College of Physical Education and Health, East China Normal University, Shanghai 200241, China
| | - Jie Xia
- The Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai 200241, China.,College of Physical Education and Health, East China Normal University, Shanghai 200241, China
| | - Xiangli Xue
- The Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai 200241, China.,College of Physical Education and Health, East China Normal University, Shanghai 200241, China
| | - Jiatong Liu
- The Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai 200241, China.,College of Physical Education and Health, East China Normal University, Shanghai 200241, China
| | - Weina Liu
- The Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai 200241, China.,College of Physical Education and Health, East China Normal University, Shanghai 200241, China
| | - Shuzhe Ding
- The Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai 200241, China.,College of Physical Education and Health, East China Normal University, Shanghai 200241, China
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50
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McBride MJ, Foley KP, D'Souza DM, Li YE, Lau TC, Hawke TJ, Schertzer JD. The NLRP3 inflammasome contributes to sarcopenia and lower muscle glycolytic potential in old mice. Am J Physiol Endocrinol Metab 2017; 313:E222-E232. [PMID: 28536183 PMCID: PMC5582883 DOI: 10.1152/ajpendo.00060.2017] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/17/2017] [Accepted: 05/18/2017] [Indexed: 01/09/2023]
Abstract
The mechanisms underpinning decreased skeletal muscle strength and slowing of movement during aging are ill-defined. "Inflammaging," increased inflammation with advancing age, may contribute to aspects of sarcopenia, but little is known about the participatory immune components. We discovered that aging was associated with increased caspase-1 activity in mouse skeletal muscle. We hypothesized that the caspase-1-containing NLRP3 inflammasome contributes to sarcopenia in mice. Male C57BL/6J wild-type (WT) and NLRP3-/- mice were aged to 10 (adult) and 24 mo (old). NLRP3-/- mice were protected from decreased muscle mass (relative to body mass) and decreased size of type IIB and IIA myofibers, which occurred between 10 and 24 mo of age in WT mice. Old NLRP3-/- mice also had increased relative muscle strength and endurance and were protected from age-related increases in the number of myopathic fibers. We found no evidence of age-related or NLRP3-dependent changes in markers of systemic inflammation. Increased caspase-1 activity was associated with GAPDH proteolysis and reduced GAPDH enzymatic activity in skeletal muscles from old WT mice. Aging did not alter caspase-1 activity, GAPDH proteolysis, or GAPDH activity in skeletal muscles of NLRP3-/- mice. Our results show that the NLRP3 inflammasome participates in age-related loss of muscle glycolytic potential. Deletion of NLRP3 mitigates both the decline in glycolytic myofiber size and the reduced activity of glycolytic enzymes in muscle during aging. We propose that the etiology of sarcopenia involves direct communication between immune responses and metabolic flux in skeletal muscle.
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Affiliation(s)
- Marin Jane McBride
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Kevin P Foley
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada; and
| | - Donna M D'Souza
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Yujin E Li
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Trevor C Lau
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada; and
| | - Thomas J Hawke
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Jonathan D Schertzer
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada;
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada; and
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