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The MCU complex in cell death. Cell Calcium 2018; 69:73-80. [DOI: 10.1016/j.ceca.2017.08.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 08/21/2017] [Accepted: 08/21/2017] [Indexed: 01/01/2023]
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52
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Sebag SC, Koval OM, Paschke JD, Winters CJ, Comellas AP, Grumbach IM. Inhibition of the mitochondrial calcium uniporter prevents IL-13 and allergen-mediated airway epithelial apoptosis and loss of barrier function. Exp Cell Res 2017; 362:400-411. [PMID: 29225050 DOI: 10.1016/j.yexcr.2017.12.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 11/12/2017] [Accepted: 12/06/2017] [Indexed: 01/13/2023]
Abstract
Mitochondria are increasingly recognized as key mediators of acute cellular stress responses in asthma. However, the distinct roles of regulators of mitochondrial physiology on allergic asthma phenotypes are currently unknown. The mitochondrial Ca2+ uniporter (MCU) resides in the inner mitochondrial membrane and controls mitochondrial Ca2+ uptake into the mitochondrial matrix. To understand the function of MCU in models of allergic asthma, in vitro and in vivo studies were performed using models of functional deficiency or knockout of MCU. In primary human respiratory epithelial cells, MCU inhibition abrogated mitochondrial Ca2+ uptake and reactive oxygen species (ROS) production, preserved the mitochondrial membrane potential and protected from apoptosis in response to the pleiotropic Th2 cytokine IL-13. Consequently, epithelial barrier function was maintained with MCU inhibition. Similarly, the endothelial barrier was preserved in respiratory epithelium isolated from MCU-/- mice after exposure to IL-13. In the ovalbumin-model of allergic airway disease, MCU deficiency resulted in decreased apoptosis within the large airway epithelial cells. Concordantly, expression of the tight junction protein ZO-1 was preserved, indicative of maintenance of epithelial barrier function. These data implicate mitochondrial Ca2+ uptake through MCU as a key controller of epithelial cell viability in acute allergic asthma.
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Affiliation(s)
- Sara C Sebag
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Olha M Koval
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; Veterans Affairs Healthcare System, Iowa City, IA, USA
| | - John D Paschke
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Christopher J Winters
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Alejandro P Comellas
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; Veterans Affairs Healthcare System, Iowa City, IA, USA
| | - Isabella M Grumbach
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; Veterans Affairs Healthcare System, Iowa City, IA, USA.
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Sommakia S, Houlihan PR, Deane SS, Simcox JA, Torres NS, Jeong MY, Winge DR, Villanueva CJ, Chaudhuri D. Mitochondrial cardiomyopathies feature increased uptake and diminished efflux of mitochondrial calcium. J Mol Cell Cardiol 2017; 113:22-32. [PMID: 28962857 PMCID: PMC5652072 DOI: 10.1016/j.yjmcc.2017.09.009] [Citation(s) in RCA: 37] [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: 04/27/2017] [Revised: 09/07/2017] [Accepted: 09/25/2017] [Indexed: 12/26/2022]
Abstract
Calcium (Ca2+) influx into the mitochondrial matrix stimulates ATP synthesis. Here, we investigate whether mitochondrial Ca2+ transport pathways are altered in the setting of deficient mitochondrial energy synthesis, as increased matrix Ca2+ may provide a stimulatory boost. We focused on mitochondrial cardiomyopathies, which feature such dysfunction of oxidative phosphorylation. We study a mouse model where the main transcription factor for mitochondrial DNA (transcription factor A, mitochondrial, Tfam) has been disrupted selectively in cardiomyocytes. By the second postnatal week (10-15day old mice), these mice have developed a dilated cardiomyopathy associated with impaired oxidative phosphorylation. We find evidence of increased mitochondrial Ca2+ during this period using imaging, electrophysiology, and biochemistry. The mitochondrial Ca2+ uniporter, the main portal for Ca2+ entry, displays enhanced activity, whereas the mitochondrial sodium-calcium (Na+-Ca2+) exchanger, the main portal for Ca2+ efflux, is inhibited. These changes in activity reflect changes in protein expression of the corresponding transporter subunits. While decreased transcription of Nclx, the gene encoding the Na+-Ca2+ exchanger, explains diminished Na+-Ca2+ exchange, the mechanism for enhanced uniporter expression appears to be post-transcriptional. Notably, such changes allow cardiac mitochondria from Tfam knockout animals to be far more sensitive to Ca2+-induced increases in respiration. In the absence of Ca2+, oxygen consumption declines to less than half of control values in these animals, but rebounds to control levels when incubated with Ca2+. Thus, we demonstrate a phenotype of enhanced mitochondrial Ca2+ in a mitochondrial cardiomyopathy model, and show that such Ca2+ accumulation is capable of rescuing deficits in energy synthesis capacity in vitro.
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Affiliation(s)
- Salah Sommakia
- Nora Eccles Harrison Cardiovascular Research and Training Institute, Cardiology Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States
| | - Patrick R Houlihan
- Department of Cardiology, Boston Children's Hospital, Boston, MA, United States
| | - Sadiki S Deane
- Nora Eccles Harrison Cardiovascular Research and Training Institute, Cardiology Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States
| | - Judith A Simcox
- Department of Biochemistry, University of Utah, Salt Lake City, UT, United States
| | - Natalia S Torres
- Nora Eccles Harrison Cardiovascular Research and Training Institute, Cardiology Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States
| | - Mi-Young Jeong
- Department of Biochemistry, University of Utah, Salt Lake City, UT, United States; Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States
| | - Dennis R Winge
- Department of Biochemistry, University of Utah, Salt Lake City, UT, United States; Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States
| | - Claudio J Villanueva
- Department of Biochemistry, University of Utah, Salt Lake City, UT, United States
| | - Dipayan Chaudhuri
- Nora Eccles Harrison Cardiovascular Research and Training Institute, Cardiology Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States.
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Copier CU, León L, Fernández M, Contador D, Calligaris SD. Circulating miR-19b and miR-181b are potential biomarkers for diabetic cardiomyopathy. Sci Rep 2017; 7:13514. [PMID: 29044172 PMCID: PMC5647433 DOI: 10.1038/s41598-017-13875-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 10/03/2017] [Indexed: 12/17/2022] Open
Abstract
Diabetic cardiomyopathy is characterized by metabolic changes in the myocardium that promote a slow and silent dysfunction of muscle fibers, leading to myocardium remodelling and heart failure, independently of the presence of coronary artery diseases or hypertension. At present, no imaging methods allow an early diagnosis of this disease. Circulating miRNAs in plasma have been proposed as biomarkers in the prognosis of several cardiac diseases. This study aimed to determine whether circulating miRNAs could be potential biomarkers of diabetic cardiomyopathy. Mice that were fed with a high fat diet for 16 months, showed metabolic syndrome manifestations, cardiac hypertrophy (without hypertension) and a progressive cardiac function decline. At 16 months, when maximal degree of cardiac dysfunction was observed, 15 miRNAs from a miRNA microarray screening in myocardium were selected. Then, selected miRNAs expression in myocardium (at 4 and 16 months) and plasma (at 4, 12 and 16 months) were measured by RT-qPCR. Circulating miR-19b-3p and miR-181b-5p levels were associated with myocardium levels during the development of diabetic cardiomyopathy (in terms of cardiac dysfunction), suggesting that these miRNAs could be suitable biomarkers of this disease in asymptomatic diabetic patients.
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Affiliation(s)
- Camila Uribe Copier
- Centro de Medicina Regenerativa, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Av. Las Condes 12.438, Lo Barnechea, Santiago, Chile
| | - Luis León
- Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Pedro de Valdivia 425, Providencia, Santiago, Chile
| | - Mauricio Fernández
- Departamento de Cardiología, Clínica Alemana de Santiago - Universidad del Desarrollo, Vitacura 5951, Vitacura, Santiago, Chile
| | - David Contador
- Centro de Medicina Regenerativa, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Av. Las Condes 12.438, Lo Barnechea, Santiago, Chile
| | - Sebastián D Calligaris
- Centro de Medicina Regenerativa, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Av. Las Condes 12.438, Lo Barnechea, Santiago, Chile.
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Hong Z, Chen KH, DasGupta A, Potus F, Dunham-Snary K, Bonnet S, Tian L, Fu J, Breuils-Bonnet S, Provencher S, Wu D, Mewburn J, Ormiston ML, Archer SL. MicroRNA-138 and MicroRNA-25 Down-regulate Mitochondrial Calcium Uniporter, Causing the Pulmonary Arterial Hypertension Cancer Phenotype. Am J Respir Crit Care Med 2017; 195:515-529. [PMID: 27648837 DOI: 10.1164/rccm.201604-0814oc] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Pulmonary arterial hypertension (PAH) is an obstructive vasculopathy characterized by excessive pulmonary artery smooth muscle cell (PASMC) proliferation, migration, and apoptosis resistance. This cancer-like phenotype is promoted by increased cytosolic calcium ([Ca2+]cyto), aerobic glycolysis, and mitochondrial fission. OBJECTIVES To determine how changes in mitochondrial calcium uniporter (MCU) complex (MCUC) function influence mitochondrial dynamics and contribute to PAH's cancer-like phenotype. METHODS PASMCs were isolated from patients with PAH and healthy control subjects and assessed for expression of MCUC subunits. Manipulation of the pore-forming subunit, MCU, in PASMCs was achieved through small interfering RNA knockdown or MCU plasmid-mediated up-regulation, as well as through modulation of the upstream microRNAs (miRs) miR-138 and miR-25. In vivo, nebulized anti-miRs were administered to rats with monocrotaline-induced PAH. MEASUREMENTS AND MAIN RESULTS Impaired MCUC function, resulting from down-regulation of MCU and up-regulation of an inhibitory subunit, mitochondrial calcium uptake protein 1, is central to PAH's pathogenesis. MCUC dysfunction decreases intramitochondrial calcium ([Ca2+]mito), inhibiting pyruvate dehydrogenase activity and glucose oxidation, while increasing [Ca2+]cyto, promoting proliferation, migration, and fission. In PAH PASMCs, increasing MCU decreases cell migration, proliferation, and apoptosis resistance by lowering [Ca2+]cyto, raising [Ca2+]mito, and inhibiting fission. In normal PASMCs, MCUC inhibition recapitulates the PAH phenotype. In PAH, elevated miRs (notably miR-138) down-regulate MCU directly and also by decreasing MCU's transcriptional regulator cAMP response element-binding protein 1. Nebulized anti-miRs against miR-25 and miR-138 restore MCU expression, reduce cell proliferation, and regress established PAH in the monocrotaline model. CONCLUSIONS These results highlight miR-mediated MCUC dysfunction as a unifying mechanism in PAH that can be therapeutically targeted.
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Affiliation(s)
- Zhigang Hong
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Kuang-Hueih Chen
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Asish DasGupta
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Francois Potus
- 2 Pulmonary Hypertension Research Group of the University Cardiology and Pulmonary Institute of the Quebec Research Centre, Laval University, Quebec City, Quebec, Canada
| | | | - Sebastien Bonnet
- 2 Pulmonary Hypertension Research Group of the University Cardiology and Pulmonary Institute of the Quebec Research Centre, Laval University, Quebec City, Quebec, Canada
| | - Lian Tian
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Jennifer Fu
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Sandra Breuils-Bonnet
- 2 Pulmonary Hypertension Research Group of the University Cardiology and Pulmonary Institute of the Quebec Research Centre, Laval University, Quebec City, Quebec, Canada
| | - Steeve Provencher
- 2 Pulmonary Hypertension Research Group of the University Cardiology and Pulmonary Institute of the Quebec Research Centre, Laval University, Quebec City, Quebec, Canada
| | - Danchen Wu
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Jeffrey Mewburn
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Mark L Ormiston
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
| | - Stephen L Archer
- 1 Department of Medicine, Queen's University, Kingston, Ontario, Canada; and
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56
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Garcia‐Riart B, Lorda‐Diez CI, Marin‐Llera JC, Garcia‐Porrero JA, Hurle JM, Montero JA. Interdigital tissue remodelling in the embryonic limb involves dynamic regulation of the miRNA profiles. J Anat 2017; 231:275-286. [PMID: 28543398 PMCID: PMC5522895 DOI: 10.1111/joa.12629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2017] [Indexed: 11/26/2022] Open
Abstract
Next-generation sequencing in combination with quantitative polymerase chain reaction analysis revealed a dynamic miRNA signature in the interdigital mesoderm of the chick embryonic hinlimb in the course of interdigit remodelling. During this period, 612 previously known chicken miRNAs (gga-miRNAs) and 401 non-identified sequences were expressed in the interdigital mesoderm. Thirty-six microRNAs, represented by more than 750 reads per million, displayed differential expression between stages HH29 (6 id) and HH32 (7.5 id), which correspond to the onset and the peak of interdigital cell death. Twenty miRNAs were upregulated by at least 1.5-fold, and sixteen were downregulated by at least 0.5-fold. Upregulated miRNAs included miRNAs with recognized proapoptotic functions in other systems (miR-181 family, miR-451 and miR-148a), miRNAs associated with inflammation and cell senescence (miR-21 and miR-146) and miRNAs able to induce changes in the extracellular matrix (miR-30c). In contrast, miRNAs with known antiapoptotic effects in other systems, such as miR-222 and miR-205, became downregulated. In addition, miR-92, an important positive regulator of cell proliferation, was also downregulated. Together, these findings indicate a role for miRNAs in the control of tissue regression and cell death in a characteristic morphogenetic embryonic process based on massive apoptosis.
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Affiliation(s)
- Beatriz Garcia‐Riart
- Departamento de Anatomía y Biología Celular and IDIVALUniversidad de CantabriaSantanderSpain
| | - Carlos I. Lorda‐Diez
- Departamento de Anatomía y Biología Celular and IDIVALUniversidad de CantabriaSantanderSpain
| | - Jessica C. Marin‐Llera
- Departamento de Anatomía y Biología Celular and IDIVALUniversidad de CantabriaSantanderSpain
- Present address:
Instituto de Investigaciones BiomédicasUniversidad Nacional Autónoma de MéxicoDistrito FederalMéxico
| | - Juan A. Garcia‐Porrero
- Departamento de Anatomía y Biología Celular and IDIVALUniversidad de CantabriaSantanderSpain
| | - Juan M. Hurle
- Departamento de Anatomía y Biología Celular and IDIVALUniversidad de CantabriaSantanderSpain
| | - Juan A. Montero
- Departamento de Anatomía y Biología Celular and IDIVALUniversidad de CantabriaSantanderSpain
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57
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Liu J, Li SF, Lee CY, Song JX, Zhang F, Cui YX, Chen H. Circulating microRNAs as potential biomarkers for unstable angina. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:9073-9083. [PMID: 31966780 PMCID: PMC6965375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 06/25/2017] [Indexed: 06/10/2023]
Abstract
BACKGROUND Chest pain is a typical presentation in the emergency department (ED), often due to acute coronary syndrome. Accurate and fast identification is crucial. The diagnosis and proper treatment of unstable angina (UA) can reduce the chance of acute myocardial infarction, and reduce high mortality and morbidity rates. However there is a lack of reliable and valid biomarkers in the diagnosis of UA. This study investigated the usefulness of circulating microRNAs (miRNAs) for differentiating UA from non-ischemic chest pain (NICP) in the ED. Methods The expressions of circulating miRNAs in patients with UA were evaluated relative to individuals with NICP (control subjects). Circulating miR-21, miR-25, miR-92a, miR-106b, miR-126* and miR-451 levels were measured in 98 patients with UA and 95 control subjects in the ED. To investigate the underlying functions of miRNAs in UA, bioinformatic analysis of validated miRNAs was conducted. RESULTS Circulating miRNAs were upregulated in UA compared with the control group. The combination of the modified HEART score (m-HS) and miR-25 (AUC 0.901, NRI 0.096) could better distinguish UA than m-HS alone. Bioinformatic analysis indicated that miRNAs may take part in platelet activation, cGMP-PKG signaling pathways etc. Conclusion: The circulating levels of miRNAs (miR-21, miR-25, miR-106b, miR-126*) are significantly higher in UA patients compared with patients with NICP, and the addition of the m-HS that combined ECG, age, risk factors and troponin is useful to detect or rule out UA. The associated signaling pathways are involved in the pathogenesis of vulnerable plaque.
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Affiliation(s)
- Jun Liu
- Department of Cardiology, Peking University People’s HospitalBeijing, China
- Beijing Key Laboratory of Early Prediction and Intervention of Acute Myocardial Infarction, Peking University People’s HospitalBeijing, China
- Center for Cardiovascular Translational Research, Peking University People’s HospitalBeijing, China
| | - Su-Fang Li
- Department of Cardiology, Peking University People’s HospitalBeijing, China
- Beijing Key Laboratory of Early Prediction and Intervention of Acute Myocardial Infarction, Peking University People’s HospitalBeijing, China
- Center for Cardiovascular Translational Research, Peking University People’s HospitalBeijing, China
| | - Chong-You Lee
- Department of Cardiology, Peking University People’s HospitalBeijing, China
- Beijing Key Laboratory of Early Prediction and Intervention of Acute Myocardial Infarction, Peking University People’s HospitalBeijing, China
- Center for Cardiovascular Translational Research, Peking University People’s HospitalBeijing, China
| | - Jun-Xian Song
- Department of Cardiology, Peking University People’s HospitalBeijing, China
- Beijing Key Laboratory of Early Prediction and Intervention of Acute Myocardial Infarction, Peking University People’s HospitalBeijing, China
- Center for Cardiovascular Translational Research, Peking University People’s HospitalBeijing, China
| | - Feng Zhang
- Department of Cardiology, Peking University People’s HospitalBeijing, China
- Beijing Key Laboratory of Early Prediction and Intervention of Acute Myocardial Infarction, Peking University People’s HospitalBeijing, China
- Center for Cardiovascular Translational Research, Peking University People’s HospitalBeijing, China
| | - Yu-Xia Cui
- Department of Cardiology, Peking University People’s HospitalBeijing, China
- Beijing Key Laboratory of Early Prediction and Intervention of Acute Myocardial Infarction, Peking University People’s HospitalBeijing, China
- Center for Cardiovascular Translational Research, Peking University People’s HospitalBeijing, China
| | - Hong Chen
- Department of Cardiology, Peking University People’s HospitalBeijing, China
- Beijing Key Laboratory of Early Prediction and Intervention of Acute Myocardial Infarction, Peking University People’s HospitalBeijing, China
- Center for Cardiovascular Translational Research, Peking University People’s HospitalBeijing, China
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58
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Mammucari C, Gherardi G, Rizzuto R. Structure, Activity Regulation, and Role of the Mitochondrial Calcium Uniporter in Health and Disease. Front Oncol 2017; 7:139. [PMID: 28740830 PMCID: PMC5502327 DOI: 10.3389/fonc.2017.00139] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 06/19/2017] [Indexed: 01/09/2023] Open
Abstract
Mitochondrial Ca2+ uptake plays a pivotal role both in cell energy balance and in cell fate determination. Studies on the role of mitochondrial Ca2+ signaling in pathophysiology have been favored by the identification of the genes encoding the mitochondrial calcium uniporter (MCU) and its regulatory subunits. Thus, research carried on in the last years on one hand has determined the structure of the MCU complex and its regulation, on the other has uncovered the consequences of dysregulated mitochondrial Ca2+ signaling in cell and tissue homeostasis. Whether mitochondrial Ca2+ uptake can be exploited as a weapon to counteract cancer progression is debated. In this review, we summarize recent research on the molecular structure of the MCU, the regulatory mechanisms that control its activity and its relevance in pathophysiology, focusing in particular on its role in cancer progression.
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Affiliation(s)
| | - Gaia Gherardi
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padova, Padova, Italy
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59
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Marchi S, Patergnani S, Missiroli S, Morciano G, Rimessi A, Wieckowski MR, Giorgi C, Pinton P. Mitochondrial and endoplasmic reticulum calcium homeostasis and cell death. Cell Calcium 2017; 69:62-72. [PMID: 28515000 DOI: 10.1016/j.ceca.2017.05.003] [Citation(s) in RCA: 390] [Impact Index Per Article: 55.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/04/2017] [Accepted: 05/04/2017] [Indexed: 12/12/2022]
Abstract
The endoplasmic reticulum (ER) and mitochondria cannot be considered as static structures, as they intimately communicate, forming very dynamic platforms termed mitochondria-associated membranes (MAMs). In particular, the ER transmits proper Ca2+ signals to mitochondria, which decode them into specific inputs to regulate essential functions, including metabolism, energy production and apoptosis. Here, we will describe the different molecular players involved in the transfer of Ca2+ ions from the ER lumen to the mitochondrial matrix and how modifications in both ER-mitochondria contact sites and Ca2+ signaling can alter the cell death execution program.
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Affiliation(s)
- Saverio Marchi
- Dept. of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Simone Patergnani
- Dept. of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Sonia Missiroli
- Dept. of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Giampaolo Morciano
- Dept. of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Alessandro Rimessi
- Dept. of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | | | - Carlotta Giorgi
- Dept. of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Paolo Pinton
- Dept. of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy.
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60
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Zhao Y, Ponnusamy M, Dong Y, Zhang L, Wang K, Li P. Effects of miRNAs on myocardial apoptosis by modulating mitochondria related proteins. Clin Exp Pharmacol Physiol 2017; 44:431-440. [DOI: 10.1111/1440-1681.12720] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 12/01/2016] [Accepted: 12/12/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Yanfang Zhao
- Centre for Developmental Cardiology; Institute for Translational Medicine; Qingdao University; Qingdao China
| | - Murugavel Ponnusamy
- Centre for Developmental Cardiology; Institute for Translational Medicine; Qingdao University; Qingdao China
| | - Yanhan Dong
- Centre for Developmental Cardiology; Institute for Translational Medicine; Qingdao University; Qingdao China
| | - Lei Zhang
- Centre for Developmental Cardiology; Institute for Translational Medicine; Qingdao University; Qingdao China
| | - Kun Wang
- Centre for Developmental Cardiology; Institute for Translational Medicine; Qingdao University; Qingdao China
| | - Peifeng Li
- Centre for Developmental Cardiology; Institute for Translational Medicine; Qingdao University; Qingdao China
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61
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Agarwal U, George A, Bhutani S, Ghosh-Choudhary S, Maxwell JT, Brown ME, Mehta Y, Platt MO, Liang Y, Sahoo S, Davis ME. Experimental, Systems, and Computational Approaches to Understanding the MicroRNA-Mediated Reparative Potential of Cardiac Progenitor Cell-Derived Exosomes From Pediatric Patients. Circ Res 2017; 120:701-712. [PMID: 27872050 PMCID: PMC5315680 DOI: 10.1161/circresaha.116.309935] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/17/2016] [Accepted: 11/21/2016] [Indexed: 12/12/2022]
Abstract
RATIONALE Studies have demonstrated that exosomes can repair cardiac tissue post-myocardial infarction and recapitulate the benefits of cellular therapy. OBJECTIVE We evaluated the role of donor age and hypoxia of human pediatric cardiac progenitor cell (CPC)-derived exosomes in a rat model of ischemia-reperfusion injury. METHODS AND RESULTS Human CPCs from the right atrial appendages from children of different ages undergoing cardiac surgery for congenital heart defects were isolated and cultured under hypoxic or normoxic conditions. Exosomes were isolated from the culture-conditioned media and delivered to athymic rats after ischemia-reperfusion injury. Echocardiography at day 3 post-myocardial infarction suggested statistically improved function in neonatal hypoxic and neonatal normoxic groups compared with saline-treated controls. At 28 days post-myocardial infarction, exosomes derived from neonatal normoxia, neonatal hypoxia, infant hypoxia, and child hypoxia significantly improved cardiac function compared with those from saline-treated controls. Staining showed decreased fibrosis and improved angiogenesis in hypoxic groups compared with controls. Finally, using sequencing data, a computational model was generated to link microRNA levels to specific outcomes. CONCLUSIONS CPC exosomes derived from neonates improved cardiac function independent of culture oxygen levels, whereas CPC exosomes from older children were not reparative unless subjected to hypoxic conditions. Cardiac functional improvements were associated with increased angiogenesis, reduced fibrosis, and improved hypertrophy, resulting in improved cardiac function; however, mechanisms for normoxic neonatal CPC exosomes improved function independent of those mechanisms. This is the first study of its kind demonstrating that donor age and oxygen content in the microenvironment significantly alter the efficacy of human CPC-derived exosomes.
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Affiliation(s)
- Udit Agarwal
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Alex George
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Srishti Bhutani
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Shohini Ghosh-Choudhary
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Joshua T Maxwell
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Milton E Brown
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Yash Mehta
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Manu O Platt
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Yaxuan Liang
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Susmita Sahoo
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.)
| | - Michael E Davis
- From the Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta (U.A., A.G., S.B., S.G.-C., J.T.M., M.E.B., Y.M., M.O.P., M.E.D.); Division of Cardiology, Emory University School of Medicine, Atlanta, GA (U.A., J.T.M., M.E.B., M.E.D.); Children's Heart Research and Outcomes Center, Emory University School of Medicine and Children's Healthcare of Atlanta, GA (M.E.D.); and Cardiovascular Research Center, Icahn School of Medicine, Mount Sinai, New York (Y.L., S.S.).
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Liao Y, Dong Y, Cheng J. The Function of the Mitochondrial Calcium Uniporter in Neurodegenerative Disorders. Int J Mol Sci 2017; 18:ijms18020248. [PMID: 28208618 PMCID: PMC5343785 DOI: 10.3390/ijms18020248] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/17/2017] [Accepted: 01/18/2017] [Indexed: 11/16/2022] Open
Abstract
The mitochondrial calcium uniporter (MCU)-a calcium uniporter on the inner membrane of mitochondria-controls the mitochondrial calcium uptake in normal and abnormal situations. Mitochondrial calcium is essential for the production of adenosine triphosphate (ATP); however, excessive calcium will induce mitochondrial dysfunction. Calcium homeostasis disruption and mitochondrial dysfunction is observed in many neurodegenerative disorders. However, the role and regulatory mechanism of the MCU in the development of these diseases are obscure. In this review, we summarize the role of the MCU in controlling oxidative stress-elevated mitochondrial calcium and its function in neurodegenerative disorders. Inhibition of the MCU signaling pathway might be a new target for the treatment of neurodegenerative disorders.
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Affiliation(s)
- Yajin Liao
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, No. 27 Taiping Road, Haidian District, Beijing 100039, China.
- The State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
| | - Yuan Dong
- Department of Biochemistry, Qingdao University Medical College, Qingdao 266071, China.
| | - Jinbo Cheng
- The State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
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Marchi S, Bittremieux M, Missiroli S, Morganti C, Patergnani S, Sbano L, Rimessi A, Kerkhofs M, Parys JB, Bultynck G, Giorgi C, Pinton P. Endoplasmic Reticulum-Mitochondria Communication Through Ca 2+ Signaling: The Importance of Mitochondria-Associated Membranes (MAMs). ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 997:49-67. [PMID: 28815521 DOI: 10.1007/978-981-10-4567-7_4] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The execution of proper Ca2+ signaling requires close apposition between the endoplasmic reticulum (ER) and mitochondria. Hence, Ca2+ released from the ER is "quasi-synaptically" transferred to mitochondrial matrix, where Ca2+ stimulates mitochondrial ATP synthesis by activating the tricarboxylic acid (TCA) cycle. However, when the Ca2+ transfer is excessive and sustained, mitochondrial Ca2+ overload induces apoptosis by opening the mitochondrial permeability transition pore. A large number of regulatory proteins reside at mitochondria-associated ER membranes (MAMs) to maintain the optimal distance between the organelles and to coordinate the functionality of both ER and mitochondrial Ca2+ transporters or channels. In this chapter, we discuss the different pathways involved in the regulation of ER-mitochondria Ca2+ flux and describe the activities of the various Ca2+ players based on their primary intra-organelle localization.
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Affiliation(s)
- Saverio Marchi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Mart Bittremieux
- Laboratory of Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine and Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O&N-I box 802, Herestraat 49, B-3000, Leuven, Belgium
| | - Sonia Missiroli
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Claudia Morganti
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Simone Patergnani
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Luigi Sbano
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Alessandro Rimessi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Martijn Kerkhofs
- Laboratory of Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine and Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O&N-I box 802, Herestraat 49, B-3000, Leuven, Belgium
| | - Jan B Parys
- Laboratory of Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine and Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O&N-I box 802, Herestraat 49, B-3000, Leuven, Belgium
| | - Geert Bultynck
- Laboratory of Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine and Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O&N-I box 802, Herestraat 49, B-3000, Leuven, Belgium
| | - Carlotta Giorgi
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy.
| | - Paolo Pinton
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy.
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Shoshan-Barmatz V, De S. Mitochondrial VDAC, the Na +/Ca 2+ Exchanger, and the Ca 2+ Uniporter in Ca 2+ Dynamics and Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 981:323-347. [PMID: 29594867 DOI: 10.1007/978-3-319-55858-5_13] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Mitochondrial Ca2+ uptake and release play pivotal roles in cellular physiology by regulating intracellular Ca2+ signaling, energy metabolism, and cell death. Ca2+ transport across the inner and outer mitochondrial membranes (IMM, OMM, respectively), is mediated by several proteins, including the voltage-dependent anion channel 1 (VDAC1) in the OMM, and the mitochondrial Ca2+ uniporter (MCU) and Na+-dependent mitochondrial Ca2+ efflux transporter, (the NCLX), both in the IMM. By transporting Ca2+ across the OMM to the mitochondrial inner-membrane space (IMS), VDAC1 allows Ca2+ access to the MCU, facilitating transport of Ca2+ to the matrix, and also from the IMS to the cytosol. Intra-mitochondrial Ca2+ controls energy production and metabolism by modulating critical enzymes in the tricarboxylic acid (TCA) cycle and fatty acid oxidation. Thus, by transporting Ca2+, VDAC1 plays a fundamental role in regulating mitochondrial Ca2+ homeostasis, oxidative phosphorylation, and Ca2+ crosstalk among mitochondria, cytoplasm, and the endoplasmic reticulum (ER). VDAC1 has also been recognized as a key protein in mitochondria-mediated apoptosis, and apoptosis stimuli induce overexpression of the protein in a Ca2+-dependent manner. The overexpressed VDAC1 undergoes oligomerization leading to the formation of a channel, through which apoptogenic agents can be released. Here, we review the roles of VDAC1 in mitochondrial Ca2+ homeostasis, in apoptosis, and in diseases associated with mitochondria dysfunction.
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Affiliation(s)
- Varda Shoshan-Barmatz
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
| | - Soumasree De
- Department of Life Sciences and the National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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65
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Mitochondrial Calcium Handling in Physiology and Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 982:25-47. [PMID: 28551780 DOI: 10.1007/978-3-319-55330-6_2] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Calcium (Ca2+) accumulation inside mitochondria represents a pleiotropic signal controlling a wide range of cellular functions, including key metabolic pathways and life/death decisions. This phenomenon has been first described in the 1960s, but the identity of the molecules controlling this process remained a mystery until just few years ago, when both mitochondrial Ca2+ uptake and release systems were genetically dissected. This finally opened the possibility to develop genetic models to directly test the contribution of mitochondrial Ca2+ homeostasis to cellular functions. Here we summarize our current understanding of the molecular machinery that controls mitochondrial Ca2+ handling and critically evaluate the physiopathological role of mitochondrial Ca2+ signaling, based on recent evidences obtained through in vitro and in vivo models.
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Liu X, Trakooljul N, Hadlich F, Muráni E, Wimmers K, Ponsuksili S. MicroRNA-mRNA regulatory networking fine-tunes the porcine muscle fiber type, muscular mitochondrial respiratory and metabolic enzyme activities. BMC Genomics 2016; 17:531. [PMID: 27485725 PMCID: PMC4970254 DOI: 10.1186/s12864-016-2850-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 06/20/2016] [Indexed: 02/02/2023] Open
Abstract
Background MicroRNAs (miRNAs) are small non-coding RNAs that play critical roles in diverse biological processes via regulation of gene expression including in skeletal muscles. In the current study, miRNA expression profile was investigated in longissimus muscle biopsies of malignant hyperthermia syndrome-negative Duroc and Pietrain pigs with distinct muscle metabolic properties in order to explore the regulatory role of miRNAs related to mitochondrial respiratory activity and metabolic enzyme activity in skeletal muscle. Results A comparative analysis of the miRNA expression profile between Duroc and Pietrain pigs was performed, followed by integration with mRNA profiles based on their pairwise correlation and computational target prediction. The identified target genes were enriched in protein ubiquitination pathway, stem cell pluripotency and geranylgeranyl diphosphate biosynthesis, as well as skeletal and muscular system development. Next, we analyzed the correlation between individual miRNAs and phenotypical traits including muscle fiber type, mitochondrial respiratory activity, metabolic enzyme activity and adenosine phosphate concentrations, and constructed the regulatory miRNA-mRNA networks associated with energy metabolism. It is noteworthy that miR-25 targeting BMPR2 and IRS1, miR-363 targeting USP24, miR-28 targeting HECW2 and miR-210 targeting ATP5I, ME3, MTCH1 and CPT2 were highly associated with slow-twitch oxidative fibers, fast-twitch oxidative fibers, ADP and ATP concentration suggesting an essential role of the miRNA-mRNA regulatory networking in modulating the mitochondrial energy expenditure in the porcine muscle. In the identified miRNA-mRNA network, a tight relationship between mitochondrial and ubiquitin proteasome system at the level of gene expression was observed. It revealed a link between these two systems contributing to energy metabolism of skeletal muscle under physiological conditions. Conclusions We assembled miRNA-mRNA regulatory networks based on divergent muscle properties between different pig breeds and further with the correlation analysis of expressed genes and phenotypic measurements. These complex networks relate to muscle fiber type, metabolic enzyme activity and ATP production and may contribute to divergent muscle phenotypes by fine-tuning the expression of genes. Altogether, the results provide an insight into a regulatory role of miRNAs in muscular energy metabolisms and may have an implication on meat quality and production. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-2850-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xuan Liu
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Nares Trakooljul
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Frieder Hadlich
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Eduard Muráni
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Klaus Wimmers
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Siriluck Ponsuksili
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.
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Diagnostic, Prognostic, and Therapeutic Value of Circulating miRNAs in Heart Failure Patients Associated with Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:5893064. [PMID: 27379177 PMCID: PMC4917723 DOI: 10.1155/2016/5893064] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/18/2016] [Accepted: 04/26/2016] [Indexed: 12/17/2022]
Abstract
Heart failure is a major public health problem especially in the aging population (≥65 years old), affecting nearly 5 million Americans and 15 million European people. Effective management of heart failure (HF) depends on a correct and rapid diagnosis. Presently, BNP (brain natriuretic peptide) or N-terminal pro-brain natriuretic peptide (NT-proBNP) assay is generally accepted by the international community for diagnostic evaluation and risk stratification of patients with HF. However, regardless of its widespread clinical use, BNP is still encumbered by reduced specificity. As a result, diagnosis of heart failure remains challenging. Although significant improvement happened in the clinical management of HF over the last 2 decades, traditional treatments are ultimately ineffective in many patients who progress to advanced HF. Therefore, a novel diagnostic, prognostic biomarker and new therapeutic approach are required for clinical management of HF patients. Circulating miRNAs seem to be the right choice for novel noninvasive biomarkers as well as new treatment strategies for HF. In this review, we briefly discuss the diagnostic, prognostic, and therapeutic role of circulating miRNAs in heart failure patients. We also mentioned our own technique of extraction of RNA and detection of circulating miRNAs from human plasma and oxidative stress associated miRNAs with HF.
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Overview of MicroRNAs in Cardiac Hypertrophy, Fibrosis, and Apoptosis. Int J Mol Sci 2016; 17:ijms17050749. [PMID: 27213331 PMCID: PMC4881570 DOI: 10.3390/ijms17050749] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/04/2016] [Accepted: 05/07/2016] [Indexed: 12/23/2022] Open
Abstract
MicroRNAs (miRNAs) are non-coding RNAs that play essential roles in modulating the gene expression in almost all biological events. In the past decade, the involvement of miRNAs in various cardiovascular disorders has been explored in numerous in vitro and in vivo studies. In this paper, studies focused upon the discovery of miRNAs, their target genes, and functionality are reviewed. The selected miRNAs discussed herein have regulatory effects on target gene expression as demonstrated by miRNA/3′ end untranslated region (3′UTR) interaction assay and/or gain/loss-of-function approaches. The listed miRNA entities are categorized according to the biological relevance of their target genes in relation to three cardiovascular pathologies, namely cardiac hypertrophy, fibrosis, and apoptosis. Furthermore, comparison across 86 studies identified several candidate miRNAs that might be of particular importance in the ontogenesis of cardiovascular diseases as they modulate the expression of clusters of target genes involved in the progression of multiple adverse cardiovascular events. This review illustrates the involvement of miRNAs in diverse biological signaling pathways and provides an overview of current understanding of, and progress of research into, of the roles of miRNAs in cardiovascular health and disease.
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Magenta A, Dellambra E, Ciarapica R, Capogrossi MC. Oxidative stress, microRNAs and cytosolic calcium homeostasis. Cell Calcium 2016; 60:207-17. [PMID: 27103406 DOI: 10.1016/j.ceca.2016.04.002] [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] [Received: 03/11/2016] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 12/19/2022]
Abstract
Reactive oxygen species increase cytosolic [Ca(2+)], (Cai), and also modulate the expression of some microRNAs (miRNAs), however the link among oxidative stress, miRNAs and Cai is poorly characterized. In this review we have focused on three groups of miRNAs: (a) miRNAs that are modulated both by ROS and Cai: miR-181a and miR-205; (b) miRNAs that are modulated by ROS and have an effect on Cai: miR-1, miR-21, miR-24, miR-25, miR-185 and miR-214; (c) miRNAs that modulate both ROS and Cai: miR-133; miR-145, miR-495, and we have analyzed their effects on cell signaling and cell function. Finally, in the last section we have examined the role of these miRNAs in the skin, under conditions associated with enhanced oxidative stress, i.e. skin aging, the response to ultraviolet light and two important skin diseases, psoriasis and atopic dermatitis. It is apparent that although some experimental evidence is already available on (a) the role of Cai in miRNAs expression and (b) on the ability of some miRNAs to modulate Cai-dependent intracellular signaling, these research lines are still largely unexplored and represent important areas of future studies.
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Affiliation(s)
- Alessandra Magenta
- Istituto Dermopatico dell'Immacolata-IRCCS, FLMM, Laboratorio di Patologia Vascolare, Via dei Monti di Creta 104, Rome 00167, Italy.
| | - Elena Dellambra
- Istituto Dermopatico dell'Immacolata-IRCCS, FLMM, Laboratorio di Patologia Vascolare, Via dei Monti di Creta 104, Rome 00167, Italy
| | - Roberta Ciarapica
- Istituto Dermopatico dell'Immacolata-IRCCS, FLMM, Laboratorio di Patologia Vascolare, Via dei Monti di Creta 104, Rome 00167, Italy
| | - Maurizio C Capogrossi
- Istituto Dermopatico dell'Immacolata-IRCCS, FLMM, Laboratorio di Patologia Vascolare, Via dei Monti di Creta 104, Rome 00167, Italy.
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Mammucari C, Raffaello A, Vecellio Reane D, Rizzuto R. Molecular structure and pathophysiological roles of the Mitochondrial Calcium Uniporter. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:2457-64. [PMID: 26968367 DOI: 10.1016/j.bbamcr.2016.03.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 02/24/2016] [Accepted: 03/01/2016] [Indexed: 01/21/2023]
Abstract
Mitochondrial Ca(2+) uptake regulates a wide array of cell functions, from stimulation of aerobic metabolism and ATP production in physiological settings, to induction of cell death in pathological conditions. The molecular identity of the Mitochondrial Calcium Uniporter (MCU), the highly selective channel responsible for Ca(2+) entry through the IMM, has been described less than five years ago. Since then, research has been conducted to clarify the modulation of its activity, which relies on the dynamic interaction with regulatory proteins, and its contribution to the pathophysiology of organs and tissues. Particular attention has been placed on characterizing the role of MCU in cardiac and skeletal muscles. In this review we summarize the molecular structure and regulation of the MCU complex in addition to its pathophysiological role, with particular attention to striated muscle tissues. This article is part of a Special Issue entitled: Mitochondrial Channels edited by Pierre Sonveaux, Pierre Maechler and Jean-Claude Martinou.
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Affiliation(s)
| | - Anna Raffaello
- Department of Biomedical Sciences, University of Padua, 35131, Italy.
| | | | - Rosario Rizzuto
- Department of Biomedical Sciences, University of Padua, 35131, Italy; Neuroscience Institute, National Research Council, Padua 35131, Italy.
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MicroRNA-25 Negatively Regulates Cerebral Ischemia/Reperfusion Injury-Induced Cell Apoptosis Through Fas/FasL Pathway. J Mol Neurosci 2016; 58:507-16. [DOI: 10.1007/s12031-016-0712-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Accepted: 01/04/2016] [Indexed: 02/06/2023]
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Luteolin Inhibits Ischemia/Reperfusion-Induced Myocardial Injury in Rats via Downregulation of microRNA-208b-3p. PLoS One 2015; 10:e0144877. [PMID: 26658785 PMCID: PMC4685996 DOI: 10.1371/journal.pone.0144877] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 11/24/2015] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Luteolin (LUT), a kind of flavonoid which is extracted from a variety of diets, has been reported to convey protective effects of various diseases. Recent researches have suggested that LUT can carry out cardioprotective effects during ischemia/reperfusion (I/R). However, there have no reports on whether LUT can exert protective effects against myocardial I/R injury through the actions of specific microRNAs (miRs). The purpose of this study was to determine which miRs and target genes LUT exerted such function through. METHODS Expression of various miRs in perfused rat hearts was detected using a gene chip. Target genes were predicted with TargetScan, MiRDB and MiRanda. Anoxia/reoxygenation was used to simulate I/R. Cells were transfected by miR-208b-3p mimic, inhibitor and small interfering RNA of Ets1 (avian erythroblastosis virus E26 (v ets) oncogene homolog 1). MiR-208b-3p and Ets1 mRNA were quantified by real-time quantitative polymerase chain reaction. The percentage of apoptotic cells was detected by annexin V-fluorescein isothiocyanate/propidium iodide dyeing and flow cytometry. The protein expression levels of cleaved caspase-3, Bcl-2, Bax, and Ets1 were examined by western blot analysis. A luciferase reporter assay was used to verify the combination between miR-208b-3p and the 3'-untranslated region of Ets1. RESULTS LUT pretreatment reduced miR-208b-3p expression in myocardial tissue, as compared to the I/R group. And LUT decreased miR-208b-3p expression and apoptosis caused by I/R. However, overexpression of miR-208b-3p further aggravated the changes caused by I/R and blocked all the effects of LUT. Knockdown of miR-208b-3p expression also attenuated apoptosis, while knockdown of Ets1 promoted apoptosis. Further, the luciferase reporter assay showed that miR-208b-3p could inhibit Ets1 expression. CONCLUSION LUT pretreatment conveys anti-apoptotic effects after myocardial I/R injury by decreasing miR-208b-3p and increasing Ets1 expression levels.
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The Non-Coding RNA Journal Club: Highlights on Recent Papers—2. Noncoding RNA 2015. [PMCID: PMC5932546 DOI: 10.3390/ncrna1020167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We are glad to share with you our second Journal Club and to highlight some of the most interesting papers published recently. [...]
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