1
|
Santos TDO, Cruz-Filho JD, Costa DM, Silva RPD, Anjos-Santos HCD, Santos JRD, Reis LC, Kettelhut ÍDC, Navegantes LC, Camargo EA, Lauton-Santos S, Badauê-Passos D, Mecawi ADS, Lustrino D. Non-canonical Ca 2+- Akt signaling pathway mediates the antiproteolytic effects induced by oxytocin receptor stimulation in skeletal muscle. Biochem Pharmacol 2023; 217:115850. [PMID: 37832795 DOI: 10.1016/j.bcp.2023.115850] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/15/2023]
Abstract
Although it has been previously demonstrated that oxytocin (OXT) receptor stimulation can control skeletal muscle mass in vivo, the intracellular mechanisms that mediate this effect are still poorly understood. Thus, rat oxidative skeletal muscles were isolated and incubated with OXT or WAY-267,464, a non-peptide selective OXT receptor (OXTR) agonist, in the presence or absence of atosiban (ATB), an OXTR antagonist, and overall proteolysis was evaluated. The results indicated that both OXT and WAY-267,464 suppressed muscle proteolysis, and this effect was blocked by the addition of ATB. Furthermore, the WAY-induced anti-catabolic action on protein metabolism did not involve the coupling between OXTR and Gαi since it was insensitive to pertussis toxin (PTX). The decrease in overall proteolysis induced by WAY was probably due to the inhibition of the autophagic/lysosomal system, as estimated by the decrease in LC3 (an autophagic/lysosomal marker), and was accompanied by an increase in the content of Ca2+-dependent protein kinase (PKC)-phosphorylated substrates, pSer473-Akt, and pSer256-FoxO1. Most of these effects were blocked by the inhibition of inositol triphosphate receptors (IP3R), which mediate Ca2+ release from the sarcoplasmic reticulum to the cytoplasm, and triciribine, an Akt inhibitor. Taken together, these findings indicate that the stimulation of OXTR directly induces skeletal muscle protein-sparing effects through a Gαq/IP3R/Ca2+-dependent pathway and crosstalk with Akt/FoxO1 signaling, which consequently decreases the expression of genes related to atrophy, such as LC3, as well as muscle proteolysis.
Collapse
Affiliation(s)
- Tatiane de Oliveira Santos
- Laboratory of Basic and Behavioral Neuroendocrinology (LANBAC), Department of Physiology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil; Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - João da Cruz-Filho
- Laboratory of Basic and Behavioral Neuroendocrinology (LANBAC), Department of Physiology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil; Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Daniely Messias Costa
- Laboratory of Basic and Behavioral Neuroendocrinology (LANBAC), Department of Physiology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil; Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Raquel Prado da Silva
- Laboratory of Basic and Behavioral Neuroendocrinology (LANBAC), Department of Physiology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil; Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Hevely Catharine Dos Anjos-Santos
- Laboratory of Basic and Behavioral Neuroendocrinology (LANBAC), Department of Physiology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil; Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - José Ronaldo Dos Santos
- Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Luís Carlos Reis
- Department of Physiological Sciences, Center for Biological and Health Sciences, Rural Federal University of Rio de Janeiro, Seropédica, RJ, Brazil
| | - Ísis do Carmo Kettelhut
- Department of Physiology and Biochemistry & Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Luiz Carlos Navegantes
- Department of Physiology and Biochemistry & Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Enilton Aparecido Camargo
- Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Sandra Lauton-Santos
- Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - Daniel Badauê-Passos
- Laboratory of Basic and Behavioral Neuroendocrinology (LANBAC), Department of Physiology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil
| | - André de Souza Mecawi
- Department of Biophysics, São Paulo Medical School, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Danilo Lustrino
- Laboratory of Basic and Behavioral Neuroendocrinology (LANBAC), Department of Physiology, Center for Biological and Health Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil; Graduate Program in Physiological Sciences, Federal University of Sergipe, São Cristóvão, SE, Brazil.
| |
Collapse
|
2
|
Santovito D, Steffens S, Barachini S, Madonna R. Autophagy, innate immunity, and cardiac disease. Front Cell Dev Biol 2023; 11:1149409. [PMID: 37234771 PMCID: PMC10206260 DOI: 10.3389/fcell.2023.1149409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Autophagy is an evolutionarily conserved mechanism of cell adaptation to metabolic and environmental stress. It mediates the disposal of protein aggregates and dysfunctional organelles, although non-conventional features have recently emerged to broadly extend the pathophysiological relevance of autophagy. In baseline conditions, basal autophagy critically regulates cardiac homeostasis to preserve structural and functional integrity and protect against cell damage and genomic instability occurring with aging. Moreover, autophagy is stimulated by multiple cardiac injuries and contributes to mechanisms of response and remodeling following ischemia, pressure overload, and metabolic stress. Besides cardiac cells, autophagy orchestrates the maturation of neutrophils and other immune cells, influencing their function. In this review, we will discuss the evidence supporting the role of autophagy in cardiac homeostasis, aging, and cardioimmunological response to cardiac injury. Finally, we highlight possible translational perspectives of modulating autophagy for therapeutic purposes to improve the care of patients with acute and chronic cardiac disease.
Collapse
Affiliation(s)
- Donato Santovito
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany
- Unit of Milan, Institute for Genetic and Biomedical Research (IRGB), National Research Council, Milan, Italy
| | - Sabine Steffens
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany
| | - Serena Barachini
- Hematology Division, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Rosalinda Madonna
- Cardiology Division, Cardio-Thoracic and Vascular Department, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
- Department of Surgical, Medical, Molecular Pathology & Critical Care Sciences, University of Pisa, Pisa, Italy
| |
Collapse
|
3
|
Peng C, Yang S, Yang F, Xiong Z, Liu Q, Liao S, Huang K, Wan W, Cao H. Crosstalk between Mfn2-mediated mitochondria associated membranes disorder and autophagy induced by molybdenum and cadmium in sheep heart. Food Chem Toxicol 2023; 174:113660. [PMID: 36803920 DOI: 10.1016/j.fct.2023.113660] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023]
Abstract
To investigate the crosstalk of mitochondria associated membranes (MAMs) disorder and autophagy co-induced by molybdenum (Mo) and cadmium (Cd) in sheep hearts. A total of 48 sheep were randomly divided into 4 groups: control group, Mo group, Cd group and Mo + Cd group. The intragastric administration lasted for 50 days. The results showed that Mo or/and Cd exposure could cause morphological damage, imbalance of trace elements and antioxidant function, Ca2+ concentration decreased markedly, and significantly increase the contents of Mo or/and Cd in myocardium. Additionally, the mRNA and protein levels of endoplasmic reticulum stress (ERS) related factors and mitochondrial biogenesis related factors were altered by Mo or/and Cd, as well as the content of ATP, inducing ERS and mitochondrial dysfunction. Meanwhile, Mo or/and Cd could lead to the alteration of expression level of MAMs-related genes and proteins, and the distance between mitochondria and endoplasmic reticulum (ER), resulting in MAMs disorder. Moreover, Mo or/and Cd exposure upregulated the mRNA and protein levels of autophagy related factors. In conclusion, our results revealed that Mo or/and Cd exposure caused ERS, mitochondrial dysfunction and structural MAMs disruption, ultimately leading to autophagy in sheep hearts, and the effects of Mo and Cd co-exposure were more obvious.
Collapse
Affiliation(s)
- Chengcheng Peng
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, PR China; Department of Pharmacy, School of Medicine, Guangxi University of Science and Technology, 257 Liu-shi Road, Liuzhou, 545005, Guangxi, PR China
| | - Shuqiu Yang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, PR China
| | - Fan Yang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, PR China
| | - Zhiwei Xiong
- Jiangxi Biotech Vocational College, Nanchang, 330045, Jiangxi, PR China
| | - Qiang Liu
- Zhangshu Agriculture and Rural Affars Bureau, Zhangshu, PR China
| | - Shuxian Liao
- Fengxin County Modern Agricultural Technology Service Center, Fengxin, PR China
| | - Kai Huang
- Jiangxi Agricultural Engineering College, Zhangshu, PR China
| | - Wengen Wan
- Jiangxi Agricultural Technology Extension Center, Nanchang, PR China
| | - Huabin Cao
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang, 330045, Jiangxi, PR China.
| |
Collapse
|
4
|
Hou W, Hao Y, Sun L, Zhao Y, Zheng X, Song L. The dual roles of autophagy and the GPCRs-mediating autophagy signaling pathway after cerebral ischemic stroke. Mol Brain 2022; 15:14. [PMID: 35109896 PMCID: PMC8812204 DOI: 10.1186/s13041-022-00899-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/20/2022] [Indexed: 12/17/2022] Open
Abstract
Ischemic stroke, caused by a lack of blood supply in brain tissues, is the third leading cause of human death and disability worldwide, and usually results in sensory and motor dysfunction, cognitive impairment, and in severe cases, even death. Autophagy is a highly conserved lysosome-dependent process in which eukaryotic cells removal misfolded proteins and damaged organelles in cytoplasm, which is critical for energy metabolism, organelle renewal, and maintenance of intracellular homeostasis. Increasing evidence suggests that autophagy plays important roles in pathophysiological mechanisms under ischemic conditions. However, there are still controversies about whether autophagy plays a neuroprotective or damaging role after ischemia. G-protein-coupled receptors (GPCRs), one of the largest protein receptor superfamilies in mammals, play crucial roles in various physiological and pathological processes. Statistics show that GPCRs are the targets of about one-fifth of drugs known in the world, predicting potential values as targets for drug research. Studies have demonstrated that nutritional deprivation can directly or indirectly activate GPCRs, mediating a series of downstream biological processes, including autophagy. It can be concluded that there are interactions between autophagy and GPCRs signaling pathway, which provides research evidence for regulating GPCRs-mediated autophagy. This review aims to systematically discuss the underlying mechanism and dual roles of autophagy in cerebral ischemia, and describe the GPCRs-mediated autophagy, hoping to probe promising therapeutic targets for ischemic stroke through in-depth exploration of the GPCRs-mediated autophagy signaling pathway.
Collapse
Affiliation(s)
- Weichen Hou
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Yulei Hao
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Li Sun
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Yang Zhao
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China
| | - Xiangyu Zheng
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
| | - Lei Song
- Department of Respiratory Medicine, Center for Pathogen Biology and Infectious Diseases, Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, The First Hospital of Jilin University, Xinmin Street 71#, Changchun, 130021, China.
| |
Collapse
|
5
|
Guan PP, Cao LL, Yang Y, Wang P. Calcium Ions Aggravate Alzheimer's Disease Through the Aberrant Activation of Neuronal Networks, Leading to Synaptic and Cognitive Deficits. Front Mol Neurosci 2021; 14:757515. [PMID: 34924952 PMCID: PMC8674839 DOI: 10.3389/fnmol.2021.757515] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 11/04/2021] [Indexed: 12/11/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease that is characterized by the production and deposition of β-amyloid protein (Aβ) and hyperphosphorylated tau, leading to the formation of β-amyloid plaques (APs) and neurofibrillary tangles (NFTs). Although calcium ions (Ca2+) promote the formation of APs and NFTs, no systematic review of the mechanisms by which Ca2+ affects the development and progression of AD has been published. Therefore, the current review aimed to fill the gaps between elevated Ca2+ levels and the pathogenesis of AD. Specifically, we mainly focus on the molecular mechanisms by which Ca2+ affects the neuronal networks of neuroinflammation, neuronal injury, neurogenesis, neurotoxicity, neuroprotection, and autophagy. Furthermore, the roles of Ca2+ transporters located in the cell membrane, endoplasmic reticulum (ER), mitochondria and lysosome in mediating the effects of Ca2+ on activating neuronal networks that ultimately contribute to the development and progression of AD are discussed. Finally, the drug candidates derived from herbs used as food or seasoning in Chinese daily life are summarized to provide a theoretical basis for improving the clinical treatment of AD.
Collapse
Affiliation(s)
- Pei-Pei Guan
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Long-Long Cao
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Yi Yang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Pu Wang
- College of Life and Health Sciences, Northeastern University, Shenyang, China
| |
Collapse
|
6
|
Ca 2+ transfer via the ER-mitochondria tethering complex in neuronal cells contribute to cadmium-induced autophagy. Cell Biol Toxicol 2021; 38:469-485. [PMID: 34308505 DOI: 10.1007/s10565-021-09623-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 06/10/2021] [Indexed: 10/20/2022]
Abstract
Mitochondrial-associated endoplasmic reticulum (ER) membranes (MAMs) play a key role in several physiological functions, including calcium ion (Ca2+) transfer and autophagy; however, the molecular mechanism controlling this interaction in cadmium (Cd)-induced neurotoxicity is unknown. This study shows that Cd induces alterations in MAMs and mitochondrial Ca2+ levels in PC12 cells and primary neurons. Ablation or silencing of mitofusin 2 (Mfn2) in PC12 cells or primary neurons blocks the colocalization of ER and mitochondria while reducing the efficiency of mitochondrial Ca2+ uptake. Moreover, Mfn2 defects reduce interactions or colocalization between GRP75 and VDAC1. Interestingly, the enhancement of autophagic protein levels, colocalization of LC3 and Lamp2, and GFP-LC3 puncta induced by Cd decreased in Mfn2-/- or Grp75-/- PC12 cells and Mfn2- or Grp75-silenced primary neurons. Notably, the specific Ca2+ uniporter inhibitor RuR blocked both mitochondrial Ca2+ uptake and autophagy induced by Cd. Finally, this study proves that the mechanism by which IP3R-Grp75-VDAC1 tethers in MAMs is associated with the regulation of autophagy by Mfn2 and involves their role in mediating mitochondrial Ca2+ uptake from ER stores. These results give new evidence into the organelle metabolic process by demonstrating that Ca2+ transport between ER-mitochondria is important in autophagosome formation in Cd-induced neurodegeneration.
Collapse
|
7
|
Danese A, Leo S, Rimessi A, Wieckowski MR, Fiorica F, Giorgi C, Pinton P. Cell death as a result of calcium signaling modulation: A cancer-centric prospective. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1868:119061. [PMID: 33991539 DOI: 10.1016/j.bbamcr.2021.119061] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/19/2021] [Accepted: 04/26/2021] [Indexed: 12/14/2022]
Abstract
Calcium ions (Ca2+) and the complex regulatory system governed by Ca2+ signaling have been described to be of crucial importance in numerous aspects related to cell life and death decisions, especially in recent years. The growing attention given to this second messenger is justified by the pleiotropic nature of Ca2+-binding proteins and transporters and their consequent involvement in cell fate decisions. A growing number of works highlight that deregulation of Ca2+ signaling and homoeostasis is often deleterious and drives pathological conditions; in particular, a disruption of the main Ca2+-mediated death mechanisms may lead to uncontrolled cell growth that results in cancer. In this work, we review the latest useful evidence to better understand the complex network of pathways by which Ca2+ regulates cell life and death decisions.
Collapse
Affiliation(s)
- Alberto Danese
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies, University of Ferrara, 44121 Ferrara, Italy
| | - Sara Leo
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies, University of Ferrara, 44121 Ferrara, Italy
| | - Alessandro Rimessi
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies, University of Ferrara, 44121 Ferrara, Italy
| | - Mariusz R Wieckowski
- Laboratory of Mitochondrial Biology and Metabolism, Nencki Institute of Experimental Biology, Pasteur 3 Str., 02-093 Warsaw, Poland
| | | | - Carlotta Giorgi
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies, University of Ferrara, 44121 Ferrara, Italy.
| | - Paolo Pinton
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies, University of Ferrara, 44121 Ferrara, Italy.
| |
Collapse
|
8
|
Serwach K, Gruszczynska-Biegala J. Target Molecules of STIM Proteins in the Central Nervous System. Front Mol Neurosci 2020; 13:617422. [PMID: 33424550 PMCID: PMC7786003 DOI: 10.3389/fnmol.2020.617422] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/02/2020] [Indexed: 12/16/2022] Open
Abstract
Stromal interaction molecules (STIMs), including STIM1 and STIM2, are single-pass transmembrane proteins that are located predominantly in the endoplasmic reticulum (ER). They serve as calcium ion (Ca2+) sensors within the ER. In the central nervous system (CNS), they are involved mainly in Orai-mediated store-operated Ca2+ entry (SOCE). The key molecular components of the SOCE pathway are well-characterized, but the molecular mechanisms that underlie the regulation of this pathway need further investigation. Numerous intracellular target proteins that are located in the plasma membrane, ER, cytoskeleton, and cytoplasm have been reported to play essential roles in concert with STIMs, such as conformational changes in STIMs, their translocation, the stabilization of their interactions with Orai, and the activation of other channels. The present review focuses on numerous regulators, such as Homer, SOCE-associated regulatory factor (SARAF), septin, synaptopodin, golli proteins, partner of STIM1 (POST), and transcription factors and proteasome inhibitors that regulate STIM-Orai interactions in the CNS. Further we describe novel roles of STIMs in mediating Ca2+ influx via other than Orai pathways, including TRPC channels, VGCCs, AMPA and NMDA receptors, and group I metabotropic glutamate receptors. This review also summarizes recent findings on additional molecular targets of STIM proteins including SERCA, IP3Rs, end-binding proteins (EB), presenilin, and CaMKII. Dysregulation of the SOCE-associated toolkit, including STIMs, contributes to the development of neurodegenerative disorders (e.g., Alzheimer's disease, Parkinson's disease, and Huntington's disease), traumatic brain injury, epilepsy, and stroke. Emerging evidence points to the role of STIM proteins and several of their molecular effectors and regulators in neuronal and glial physiology and pathology, suggesting their potential application for future therapeutic strategies.
Collapse
Affiliation(s)
- Karolina Serwach
- Molecular Biology Unit, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
| | | |
Collapse
|
9
|
Abstract
Cardiovascular diseases are the most prominent maladies in aging societies. Indeed, aging promotes the structural and functional declines of both the heart and the blood circulation system. In this review, we revise the contribution of known longevity pathways to cardiovascular health and delineate the possibilities to interfere with them. In particular, we evaluate autophagy, the intracellular catabolic recycling system associated with life- and health-span extension. We present genetic models, pharmacological interventions, and dietary strategies that block, reduce, or enhance autophagy upon age-related cardiovascular deterioration. Caloric restriction or caloric restriction mimetics like metformin, spermidine, and rapamycin (all of which trigger autophagy) are among the most promising cardioprotective interventions during aging. We conclude that autophagy is a fundamental process to ensure cardiac and vascular health during aging and outline its putative therapeutic importance.
Collapse
Affiliation(s)
- Mahmoud Abdellatif
- From the Department of Cardiology, Medical University of Graz, Austria (M.A., S.S.)
| | - Simon Sedej
- From the Department of Cardiology, Medical University of Graz, Austria (M.A., S.S.).,BioTechMed Graz, Austria (S.S., D.C.-G., F.M.)
| | - Didac Carmona-Gutierrez
- BioTechMed Graz, Austria (S.S., D.C.-G., F.M.).,Institute of Molecular Biosciences, NAWI Graz, University of Graz, Austria (D.C.-G., F.M.)
| | - Frank Madeo
- BioTechMed Graz, Austria (S.S., D.C.-G., F.M.).,Institute of Molecular Biosciences, NAWI Graz, University of Graz, Austria (D.C.-G., F.M.)
| | - Guido Kroemer
- Equipe 11 Labellisée Ligue Contre le Cancer, Centre de Recherche des Cordeliers, Paris, France (G.K.).,Cell Biology and Metabolomics Platforms, Gustave Roussy Comprehensive Cancer Center, Villejuif, France (G.K.).,INSERM, U1138, Paris, France (G.K.).,Université Paris Descartes, Sorbonne Paris Cité, France (G.K.).,Université Pierre et Marie Curie, Paris, France (G.K.).,Pôle de Biologie, Hôpital Européen Georges Pompidou, Paris, France (G.K.).,Department of Women's and Children's Health, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden (G.K.)
| |
Collapse
|
10
|
Gómez-Suaga P, Bravo-San Pedro JM, González-Polo RA, Fuentes JM, Niso-Santano M. ER-mitochondria signaling in Parkinson's disease. Cell Death Dis 2018; 9:337. [PMID: 29497039 PMCID: PMC5832754 DOI: 10.1038/s41419-017-0079-3] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/14/2017] [Accepted: 09/20/2017] [Indexed: 02/06/2023]
Abstract
Mitochondria form close physical contacts with a specialized domain of the endoplasmic reticulum (ER), known as the mitochondria-associated membrane (MAM). This association constitutes a key signaling hub to regulate several fundamental cellular processes. Alterations in ER-mitochondria signaling have pleiotropic effects on a variety of intracellular events resulting in mitochondrial damage, Ca2+ dyshomeostasis, ER stress and defects in lipid metabolism and autophagy. Intriguingly, many of these cellular processes are perturbed in neurodegenerative diseases. Furthermore, increasing evidence highlights that ER-mitochondria signaling contributes to these diseases, including Parkinson's disease (PD). PD is the second most common neurodegenerative disorder, for which effective mechanism-based treatments remain elusive. Several PD-related proteins localize at mitochondria or MAM and have been shown to participate in ER-mitochondria signaling regulation. Likewise, PD-related mutations have been shown to damage this signaling. Could ER-mitochondria associations be the link between pathogenic mechanisms involved in PD, providing a common mechanism? Would this provide a pharmacological target for treating this devastating disease? In this review, we aim to summarize the current knowledge of ER-mitochondria signaling and the recent evidence concerning damage to this signaling in PD.
Collapse
Affiliation(s)
- Patricia Gómez-Suaga
- Department of Basic and Clinical Neurosciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, SE5 9RX, UK
| | - José M Bravo-San Pedro
- Equipe 11 Labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006, Paris, France
- INSERM U1138, 75006, Paris, France
- Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006, Paris, France
- Université Pierre et Marie Curie/Paris VI, 75006, Paris, France
- Gustave Roussy Comprehensive Cancer Institute, 94805, Villejuif, France
| | - Rosa A González-Polo
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED), 18100, Granada, Spain
- Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura. Avda. De la Universidad S/N, C.P, 10003, Cáceres, Spain
| | - José M Fuentes
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED), 18100, Granada, Spain.
- Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura. Avda. De la Universidad S/N, C.P, 10003, Cáceres, Spain.
| | - Mireia Niso-Santano
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED), 18100, Granada, Spain.
- Facultad de Enfermería y Terapia Ocupacional, Universidad de Extremadura. Avda. De la Universidad S/N, C.P, 10003, Cáceres, Spain.
| |
Collapse
|
11
|
Lau DHW, Hartopp N, Welsh NJ, Mueller S, Glennon EB, Mórotz GM, Annibali A, Gomez-Suaga P, Stoica R, Paillusson S, Miller CCJ. Disruption of ER-mitochondria signalling in fronto-temporal dementia and related amyotrophic lateral sclerosis. Cell Death Dis 2018; 9:327. [PMID: 29491392 PMCID: PMC5832427 DOI: 10.1038/s41419-017-0022-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/18/2017] [Accepted: 09/20/2017] [Indexed: 12/13/2022]
Abstract
Fronto-temporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) are two related and incurable neurodegenerative diseases. Features of these diseases include pathological protein inclusions in affected neurons with TAR DNA-binding protein 43 (TDP-43), dipeptide repeat proteins derived from the C9ORF72 gene, and fused in sarcoma (FUS) representing major constituent proteins in these inclusions. Mutations in C9ORF72 and the genes encoding TDP-43 and FUS cause familial forms of FTD/ALS which provides evidence to link the pathology and genetics of these diseases. A large number of seemingly disparate physiological functions are damaged in FTD/ALS. However, many of these damaged functions are regulated by signalling between the endoplasmic reticulum and mitochondria, and this has stimulated investigations into the role of endoplasmic reticulum-mitochondria signalling in FTD/ALS disease processes. Here, we review progress on this topic.
Collapse
Affiliation(s)
- Dawn H W Lau
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Naomi Hartopp
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Natalie J Welsh
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Sarah Mueller
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Elizabeth B Glennon
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Gábor M Mórotz
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Ambra Annibali
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Patricia Gomez-Suaga
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Radu Stoica
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK
| | - Sebastien Paillusson
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK.
| | - Christopher C J Miller
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, 125 Coldharbour Lane Camberwell, London, SE5 9NU, UK.
| |
Collapse
|
12
|
Abstract
Receptors that activate the heterotrimeric G protein Gαq are thought to play a role in the development of heart failure. Dysregulation of autophagy occurs in some pathological cardiac conditions including heart failure, but whether Gαq is involved in this process is unknown. We used a cardiomyocyte-specific transgenic mouse model of inducible Gαq activation (termed GαqQ209L) to address this question. After 7 days of Gαq activation, GαqQ209L hearts contained more autophagic vacuoles than wild type hearts. Increased levels of proteins involved in autophagy, especially p62 and LC3-II, were also seen. LysoTracker staining and western blotting showed that the number and size of lysosomes and lysosomal protein levels were increased in GαqQ209L hearts, indicating enhanced lysosomal degradation activity. Importantly, an autophagic flux assay measuring LC3-II turnover in isolated adult cardiomyocytes indicated that autophagic activity is enhanced in GαqQ209L hearts. GαqQ209L hearts exhibited elevated levels of the autophagy initiation complex, which contains the Class III phosphoinositide 3-kinase Vps34. As a consequence, Vps34 activity and phosphatidylinositol 3-phosphate levels were higher in GαqQ209L hearts than wild type hearts, thus accounting for the higher abundance of autophagic vacuoles. These results indicate that an increase in autophagy is an early response to Gαq activation in the heart.
Collapse
|
13
|
Bootman MD, Chehab T, Bultynck G, Parys JB, Rietdorf K. The regulation of autophagy by calcium signals: Do we have a consensus? Cell Calcium 2017; 70:32-46. [PMID: 28847414 DOI: 10.1016/j.ceca.2017.08.005] [Citation(s) in RCA: 173] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/14/2017] [Accepted: 08/14/2017] [Indexed: 12/12/2022]
Abstract
Macroautophagy (hereafter called 'autophagy') is a cellular process for degrading and recycling cellular constituents, and for maintenance of cell function. Autophagy initiates via vesicular engulfment of cellular materials and culminates in their degradation via lysosomal hydrolases, with the whole process often being termed 'autophagic flux'. Autophagy is a multi-step pathway requiring the interplay of numerous scaffolding and signalling molecules. In particular, orthologs of the family of ∼30 autophagy-regulating (Atg) proteins that were first characterised in yeast play essential roles in the initiation and processing of autophagic vesicles in mammalian cells. The serine/threonine kinase mTOR (mechanistic target of rapamycin) is a master regulator of the canonical autophagic response of cells to nutrient starvation. In addition, AMP-activated protein kinase (AMPK), which is a key sensor of cellular energy status, can trigger autophagy by inhibiting mTOR, or by phosphorylating other downstream targets. Calcium (Ca2+) has been implicated in autophagic signalling pathways encompassing both mTOR and AMPK, as well as in autophagy seemingly not involving these kinases. Numerous studies have shown that cytosolic Ca2+ signals can trigger autophagy. Moreover, introduction of an exogenous chelator to prevent cytosolic Ca2+ signals inhibits autophagy in response to many different stimuli, with suggestions that buffering Ca2+ affects not only the triggering of autophagy, but also proximal and distal steps during autophagic flux. Observations such as these indicate that Ca2+ plays an essential role as a pro-autophagic signal. However, cellular Ca2+ signals can exert anti-autophagic actions too. For example, Ca2+ channel blockers induce autophagy due to the loss of autophagy-suppressing Ca2+ signals. In addition, the sequestration of Ca2+ by mitochondria during physiological signalling appears necessary to maintain cellular bio-energetics, thereby suppressing AMPK-dependent autophagy. This article attempts to provide an integrated overview of the evidence for the proposed roles of various Ca2+ signals, Ca2+ channels and Ca2+ sources in controlling autophagic flux.
Collapse
Affiliation(s)
- Martin D Bootman
- School of Life, Health and Chemical Sciences, The Open University, MK7 6AA, UK.
| | - Tala Chehab
- School of Life, Health and Chemical Sciences, The Open University, MK7 6AA, UK
| | - Geert Bultynck
- KU Leuven, Laboratory of Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine and Leuven Kanker Instituut (LKI), B-3000 Leuven, Belgium
| | - Jan B Parys
- KU Leuven, Laboratory of Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine and Leuven Kanker Instituut (LKI), B-3000 Leuven, Belgium
| | - Katja Rietdorf
- School of Life, Health and Chemical Sciences, The Open University, MK7 6AA, UK
| |
Collapse
|
14
|
García-Ávila AK, Farfán-García ED, Guevara-Salazar JA, Trujillo-Ferrara JG, Soriano-Ursúa MA. Scope of translational medicine in developing boron-containing compounds for therapeutics. World J Transl Med 2017; 6:1-9. [DOI: 10.5528/wjtm.v6.i1.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 02/23/2017] [Accepted: 03/13/2017] [Indexed: 02/06/2023] Open
Abstract
The ubiquitousness of naturally occurring boron-containing compounds (BCCs) has led to their constant contact with humankind. Recently, many synthetic BCCs have been elaborated for a broad spectrum of purposes, especially boric, boronic and borinic acids. Although BCCs were once employed primarily as antiseptics and later as antibiotics, they have become an increasingly relevant therapeutic tool. Nevertheless, this potential of BCCs has been drastically limited due to some unfortunate intra-hospital accidents in the 1940s and 1950s. The increasing use of BCCs as insecticides, antimicrobials, and other agents is providing new insights into their role in the physiology of several living species and in the pathophysiology of humans. It is becoming clear that BCCs act through a wide range of mechanisms, as do their corresponding boron-free counterparts. When comparing BCCs and similar boron-free compounds, in many cases the former show advantages in the medical field. The current mini-review focuses on how BCCs have been developed by means of translational medicine, a process connecting biomedical research with clinical applications. This process of discovery is currently in an exponential stage.
Collapse
|
15
|
Gomez-Suaga P, Paillusson S, Stoica R, Noble W, Hanger DP, Miller CCJ. The ER-Mitochondria Tethering Complex VAPB-PTPIP51 Regulates Autophagy. Curr Biol 2017; 27:371-385. [PMID: 28132811 PMCID: PMC5300905 DOI: 10.1016/j.cub.2016.12.038] [Citation(s) in RCA: 283] [Impact Index Per Article: 40.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 11/24/2016] [Accepted: 12/16/2016] [Indexed: 01/07/2023]
Abstract
Mitochondria form close physical associations with the endoplasmic reticulum (ER) that regulate a number of physiological functions. One mechanism by which regions of ER are recruited to mitochondria involves binding of the ER protein VAPB to the mitochondrial protein PTPIP51, which act as scaffolds to tether the two organelles. Here, we show that the VAPB-PTPIP51 tethers regulate autophagy. We demonstrate that overexpression of VAPB or PTPIP51 to tighten ER-mitochondria contacts impairs, whereas small interfering RNA (siRNA)-mediated loss of VAPB or PTPIP51 to loosen contacts stimulates, autophagosome formation. Moreover, we show that expression of a synthetic linker protein that artificially tethers ER and mitochondria also reduces autophagosome formation, and that this artificial tether rescues the effects of siRNA loss of VAPB or PTPIP51 on autophagy. Thus, these effects of VAPB and PTPIP51 manipulation on autophagy are a consequence of their ER-mitochondria tethering function. Interestingly, we discovered that tightening of ER-mitochondria contacts by overexpression of VAPB or PTPIP51 impairs rapamycin- and torin 1-induced, but not starvation-induced, autophagy. This suggests that the regulation of autophagy by ER-mitochondria signaling is at least partly dependent upon the nature of the autophagic stimulus. Finally, we demonstrate that the mechanism by which the VAPB-PTPIP51 tethers regulate autophagy involves their role in mediating delivery of Ca2+ to mitochondria from ER stores. Thus, our findings reveal a new molecular mechanism for regulating autophagy. Loosening ER-mitochondria contacts by loss of VAPB-PTPIP51 stimulates autophagy Tightening ER-mitochondria contacts by increased VAPB-PTPIP51 inhibits autophagy Artificial ER-mitochondria tethers rescue VAPB-PTPIP51 loss effects on autophagy The effects of VAPB-PTPIP51 involve their role in ER-mitochondria Ca2+ delivery
Collapse
Affiliation(s)
- Patricia Gomez-Suaga
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 9RX, UK
| | - Sebastien Paillusson
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 9RX, UK
| | - Radu Stoica
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 9RX, UK
| | - Wendy Noble
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 9RX, UK
| | - Diane P Hanger
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 9RX, UK
| | - Christopher C J Miller
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London SE5 9RX, UK.
| |
Collapse
|
16
|
Yang J, Yu J, Li D, Yu S, Ke J, Wang L, Wang Y, Qiu Y, Gao X, Zhang J, Huang L. Store-operated calcium entry-activated autophagy protects EPC proliferation via the CAMKK2-MTOR pathway in ox-LDL exposure. Autophagy 2016; 13:82-98. [PMID: 27791458 DOI: 10.1080/15548627.2016.1245261] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Improving biological functions of endothelial progenitor cells (EPCs) is beneficial to maintaining endothelium homeostasis and promoting vascular re-endothelialization. Because macroautophagy/autophagy has been documented as a double-edged sword in cell functions, its effects on EPCs remain to be elucidated. This study was designed to explore the role and molecular mechanisms of store-operated calcium entry (SOCE)-activated autophagy in proliferation of EPCs under hypercholesterolemia. We employed oxidized low-density lipoprotein (ox-LDL) to mimic hypercholesterolemia in bone marrow-derived EPCs from rat. Ox-LDL dose-dependently activated autophagy flux, while inhibiting EPC proliferation. Importantly, inhibition of autophagy either by silencing Atg7 or by 3-methyladenine treatment, further aggravated proliferative inhibition by ox-LDL, suggesting the protective effects of autophagy against ox-LDL. Interestingly, ox-LDL increased STIM1 expression and intracellular Ca2+ concentration. Either Ca2+ chelators or deficiency in STIM1 attenuated ox-LDL-induced autophagy activation, confirming the involvement of SOCE in the process. Furthermore, CAMKK2 (calcium/calmodulin-dependent protein kinase kinase 2, β) activation and MTOR (mechanistic target of rapamycin [serine/threonine kinase]) deactivation were associated with autophagy modulation. Together, our results reveal a novel signaling pathway of SOCE-CAMKK2 in the regulation of autophagy and offer new insights into the important roles of autophagy in maintaining proliferation and promoting the survival capability of EPCs. This may be beneficial to improving EPC transplantation efficacy and enhancing vascular re-endothelialization in patients with hypercholesterolemia.
Collapse
Affiliation(s)
- Jie Yang
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Jie Yu
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Dongdong Li
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Sanjiu Yu
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Jingbin Ke
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Lianyou Wang
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Yanwei Wang
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Youzhu Qiu
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Xubin Gao
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Jihang Zhang
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| | - Lan Huang
- a Institute of Cardiovascular Diseases, Xinqiao Hospital, Third Military Medical University , Chongqing , China
| |
Collapse
|
17
|
Decuypere JP, Parys JB, Bultynck G. ITPRs/inositol 1,4,5-trisphosphate receptors in autophagy: From enemy to ally. Autophagy 2016; 11:1944-8. [PMID: 26291777 PMCID: PMC4824608 DOI: 10.1080/15548627.2015.1083666] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
ITPRs (inositol 1,4,5-trisphosphate receptors), the main endoplasmic reticulum (ER) Ca2+-release channels, were originally proposed as suppressors of autophagy. Yet, new evidence has accumulated over recent years supporting a crucial, stimulatory role for ITPRs in driving the autophagic flux. Here, we provide an integrated view on how ITPR-mediated Ca2+ signaling can have a dual impact on autophagy, depending on the characteristics of the spatio-temporal Ca2+ signals, including the existence of ER-mitochondrial and ER-lysosomal Ca2+ signaling microdomains.
Collapse
Affiliation(s)
- Jean-Paul Decuypere
- a KU Leuven Department of Microbiology and Immunology, Laboratory of Abdominal Transplantation; University Hospitals Leuven Department of Abdominal Transplant Surgery ; Leuven , Belgium
| | - Jan B Parys
- b KU Leuven Department of Cellular and Molecular Medicine, Laboratory of Molecular and Cellular Signaling ; Leuven , Belgium
| | - Geert Bultynck
- b KU Leuven Department of Cellular and Molecular Medicine, Laboratory of Molecular and Cellular Signaling ; Leuven , Belgium
| |
Collapse
|
18
|
Shaikh S, Troncoso R, Criollo A, Bravo-Sagua R, García L, Morselli E, Cifuentes M, Quest AFG, Hill JA, Lavandero S. Regulation of cardiomyocyte autophagy by calcium. Am J Physiol Endocrinol Metab 2016; 310:E587-E596. [PMID: 26884385 PMCID: PMC4835942 DOI: 10.1152/ajpendo.00374.2015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 02/10/2016] [Indexed: 11/22/2022]
Abstract
Calcium signaling plays a crucial role in a multitude of events within the cardiomyocyte, including cell cycle control, growth, apoptosis, and autophagy. With respect to calcium-dependent regulation of autophagy, ion channels and exchangers, receptors, and intracellular mediators play fundamental roles. In this review, we discuss calcium-dependent regulation of cardiomyocyte autophagy, a lysosomal mechanism that is often cytoprotective, serving to defend against disease-related stress and nutrient insufficiency. We also highlight the importance of the subcellular distribution of calcium and related proteins, interorganelle communication, and other key signaling events that govern cardiomyocyte autophagy.
Collapse
Affiliation(s)
- Soni Shaikh
- Advanced Center for Chronic Disease and Center for Molecular Studies of the Cell, Facultad de Ciencias Quimicas y Farmaceuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Rodrigo Troncoso
- Advanced Center for Chronic Disease and Center for Molecular Studies of the Cell, Facultad de Ciencias Quimicas y Farmaceuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile
| | - Alfredo Criollo
- Advanced Center for Chronic Disease and Center for Molecular Studies of the Cell, Facultad de Ciencias Quimicas y Farmaceuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Instituto de Investigación en Ciencias Odontológicas, Facultad de Odontología, Universidad de Chile, Santiago, Chile
| | - Roberto Bravo-Sagua
- Advanced Center for Chronic Disease and Center for Molecular Studies of the Cell, Facultad de Ciencias Quimicas y Farmaceuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Lorena García
- Advanced Center for Chronic Disease and Center for Molecular Studies of the Cell, Facultad de Ciencias Quimicas y Farmaceuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Departamento de Bioquimica y Biologia Molecular, Facultad de Ciencias Quimicas y Farmaceuticas, Universidad de Chile, Santiago, Chile
| | - Eugenia Morselli
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mariana Cifuentes
- Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago, Chile
| | - Andrew F G Quest
- Advanced Center for Chronic Disease and Center for Molecular Studies of the Cell, Facultad de Ciencias Quimicas y Farmaceuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile; and
| | - Joseph A Hill
- Departments of Internal Medicine (Cardiology Division) and
- Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Sergio Lavandero
- Advanced Center for Chronic Disease and Center for Molecular Studies of the Cell, Facultad de Ciencias Quimicas y Farmaceuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile;
- Departamento de Bioquimica y Biologia Molecular, Facultad de Ciencias Quimicas y Farmaceuticas, Universidad de Chile, Santiago, Chile
- Programa de Biología Celular y Molecular, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile; and
- Departments of Internal Medicine (Cardiology Division) and
| |
Collapse
|
19
|
Cho GW, Altamirano F, Hill JA. Chronic heart failure: Ca(2+), catabolism, and catastrophic cell death. Biochim Biophys Acta Mol Basis Dis 2016; 1862:763-777. [PMID: 26775029 DOI: 10.1016/j.bbadis.2016.01.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 12/28/2015] [Accepted: 01/06/2016] [Indexed: 12/12/2022]
Abstract
Robust successes have been achieved in recent years in conquering the acutely lethal manifestations of heart disease. Many patients who previously would have died now survive to enjoy happy and productive lives. Nevertheless, the devastating impact of heart disease continues unabated, as the spectrum of disease has evolved with new manifestations. In light of this ever-evolving challenge, insights that culminate in novel therapeutic targets are urgently needed. Here, we review fundamental mechanisms of heart failure, both with reduced (HFrEF) and preserved (HFpEF) ejection fraction. We discuss pathways that regulate cardiomyocyte remodeling and turnover, focusing on Ca(2+) signaling, autophagy, and apoptosis. In particular, we highlight recent insights pointing to novel connections among these events. We also explore mechanisms whereby potential therapeutic approaches targeting these processes may improve morbidity and mortality in the devastating syndrome of heart failure.
Collapse
Affiliation(s)
- Geoffrey W Cho
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Francisco Altamirano
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Joseph A Hill
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| |
Collapse
|
20
|
A2 Adenosine Receptor-mediated Cardioprotection Against Reperfusion Injury in Rat Hearts Is Associated With Autophagy Downregulation. J Cardiovasc Pharmacol 2015; 66:25-34. [DOI: 10.1097/fjc.0000000000000239] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
21
|
Wang F, Xiao J, Shen Y, Yao F, Chen Y. Estrogen protects cardiomyocytes against lipopolysaccharide by inhibiting autophagy. Mol Med Rep 2014; 10:1509-12. [PMID: 25017426 DOI: 10.3892/mmr.2014.2365] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 03/27/2014] [Indexed: 11/05/2022] Open
Abstract
Autophagy has a significant role in myocardial injury induced by lipopolysaccharide (LPS). Estrogen (E2) has been demonstrated to protect cardiomyocytes against apoptosis; however, it remains to be determined whether it exhibits anti‑autophagic effects. The aim of the present study was to investigate whether estrogen-regulated autophagy attenuates cardiomyocyte injury induced by LPS. The cardiomyocytes of neonatal rats were randomized to the control (Con), LPS and estrogen + LPS groups. The LPS group was treated with 1 µg LPS for 24 h and the estrogen + LPS group was treated with 10‑8 M estrogen 30 min prior to treatment with LPS. Cardiomyocyte autophagy was quantitated by investigating the mRNA and protein level of autophagy‑related genes (Atgs). The mRNA expression of Atg5 and Beclin1 were measured by quantitative polymerase chain reaction and the microtubule‑associated protein light chain 3 (LC3) protein expression was measured by western blot analysis. To demonstrate the cardiomyocyte protection of estrogen, cell vitality and serum lactate dehydrogenase (LDH) levels were measured following LPS treatment. It was identified that LPS induced cardiomyocyte injury, together with the upregulation of Atg5, Beclin1 mRNA and LC3‑II protein. Furthermore, estrogen attenuated the effect of LPS. The present study provides evidence that estrogen has a myocardial protective role against injury induced by LPS by regulating autophagy.
Collapse
Affiliation(s)
- Fengmei Wang
- Department of Obstetrics and Gynaecology, Fuzhou General Hospital, Fuzhou, Fujian 350025, P.R. China
| | - Jian Xiao
- Department of Cardiothoracic Surgery, Changzheng Hospital, The Second Military Medical University, Shanghai 200003, P.R. China
| | - Yaofeng Shen
- Department of Anesthesiology, Shanghai Chest Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200030, P.R. China
| | - Feng Yao
- Department of Anesthesiology, Shanghai Chest Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200030, P.R. China
| | - Yu Chen
- Department of Obstetrics and Gynaecology, Changhai Hospital, The Second Military Medical University, Shanghai 200433, P.R. China
| |
Collapse
|
22
|
Wauson EM, Dbouk HA, Ghosh AB, Cobb MH. G protein-coupled receptors and the regulation of autophagy. Trends Endocrinol Metab 2014; 25:274-82. [PMID: 24751357 PMCID: PMC4082244 DOI: 10.1016/j.tem.2014.03.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 03/14/2014] [Accepted: 03/17/2014] [Indexed: 01/06/2023]
Abstract
Autophagy is an important catabolic cellular process that eliminates damaged and unnecessary cytoplasmic proteins and organelles. Basal autophagy occurs during normal physiological conditions, but the activity of this process can be significantly altered in human diseases. Thus, defining the regulatory inputs and signals that control autophagy is essential. Nutrients are key modulators of autophagy. Although autophagy is generally accepted to be regulated in a cell-autonomous fashion, recent studies suggest that nutrients can modulate autophagy in a systemic manner by inducing the secretion of hormones and neurotransmitters that regulate G protein-coupled receptors (GPCRs). Emerging studies show that GPCRs also regulate autophagy by directly detecting extracellular nutrients. We review the role of GPCRs in autophagy regulation, highlighting their potential as therapeutic drug targets.
Collapse
Affiliation(s)
- Eric M Wauson
- Department of Physiology and Pharmacology, Des Moines University, Des Moines, IA 50312, USA.
| | - Hashem A Dbouk
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9041, USA
| | - Anwesha B Ghosh
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9041, USA
| | - Melanie H Cobb
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9041, USA.
| |
Collapse
|
23
|
Samokhvalov V, Alsaleh N, El-Sikhry HE, Jamieson KL, Chen CB, Lopaschuk DG, Carter C, Light PE, Manne R, Falck JR, Seubert JM. Epoxyeicosatrienoic acids protect cardiac cells during starvation by modulating an autophagic response. Cell Death Dis 2013; 4:e885. [PMID: 24157879 PMCID: PMC3920965 DOI: 10.1038/cddis.2013.418] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 09/21/2013] [Accepted: 09/26/2013] [Indexed: 12/25/2022]
Abstract
Epoxyeicosatrienoic acids (EETs) are cytochrome P450 epoxygenase metabolites of arachidonic acid involved in regulating pathways promoting cellular protection. We have previously shown that EETs trigger a protective response limiting mitochondrial dysfunction and reducing cellular death. Considering it is unknown how EETs regulate cell death processes, the major focus of the current study was to investigate their role in the autophagic response of HL-1 cells and neonatal cardiomyocytes (NCMs) during starvation. We employed a dual-acting synthetic analog UA-8 (13-(3-propylureido)tridec-8-enoic acid), possessing both EET-mimetic and soluble epoxide hydrolase (sEH) inhibitory properties, or 14,15-EET as model EET molecules. We demonstrated that EETs significantly improved viability and recovery of starved cardiac cells, whereas they lowered cellular stress responses such as caspase-3 and proteasome activities. Furthermore, treatment with EETs resulted in preservation of mitochondrial functional activity in starved cells. The protective effects of EETs were abolished by autophagy-related gene 7 (Atg7) short hairpin RNA (shRNA) or pharmacological inhibition of autophagy. Mechanistic evidence demonstrated that sarcolemmal ATP-sensitive potassium channels (pmKATP) and enhanced activation of AMP-activated protein kinase (AMPK) played a crucial role in the EET-mediated effect. Our data suggest that the protective effects of EETs involve regulating the autophagic response, which results in a healthier pool of mitochondria in the starved cardiac cells, thereby representing a novel mechanism of promoting survival of cardiac cells. Thus, we provide new evidence highlighting a central role of the autophagic response in linking EETs with promoting cell survival during deep metabolic stress such as starvation.
Collapse
Affiliation(s)
- V Samokhvalov
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Lavandero S, Troncoso R, Rothermel BA, Martinet W, Sadoshima J, Hill JA. Cardiovascular autophagy: concepts, controversies, and perspectives. Autophagy 2013; 9:1455-66. [PMID: 23959233 DOI: 10.4161/auto.25969] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Despite recent scientific and technological advances, cardiovascular disease remains the leading cause of morbidity and mortality worldwide. Autophagy, an evolutionarily ancient response to cellular stress, has been implicated in the pathogenesis of a wide range of heart pathologies. However, the precise role of autophagy in these contexts remains obscure owing to its multifarious actions. Here, we review recently derived insights regarding the role of autophagy in multiple manifestations of cardiac plasticity and disease.
Collapse
Affiliation(s)
- Sergio Lavandero
- Center for Molecular Studies of the Cell; Faculty of Chemical & Pharmaceutical Sciences/ Faculty of Medicine; University of Chile; Santiago, Chile; Department of Internal Medicine (Cardiology Division); University of Texas Southwestern Medical Center; Dallas, TX USA
| | - Rodrigo Troncoso
- Center for Molecular Studies of the Cell; Faculty of Chemical & Pharmaceutical Sciences/ Faculty of Medicine; University of Chile; Santiago, Chile
| | - Beverly A Rothermel
- Department of Internal Medicine (Cardiology Division); University of Texas Southwestern Medical Center; Dallas, TX USA; Department of Molecular Biology; University of Texas Southwestern Medical Center; Dallas, TX USA
| | - Wim Martinet
- Laboratory of Physiopharmacology; University of Antwerp; Antwerp, Belgium
| | - Junichi Sadoshima
- Department of Cell Biology and Molecular Medicine; Rutgers New Jersey Medical School; Newark, NJ USA
| | - Joseph A Hill
- Department of Internal Medicine (Cardiology Division); University of Texas Southwestern Medical Center; Dallas, TX USA; Department of Molecular Biology; University of Texas Southwestern Medical Center; Dallas, TX USA
| |
Collapse
|