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Fazzone B, Anderson EM, Rozowsky JM, Yu X, O’Malley KA, Robinson S, Scali ST, Cai G, Berceli SA. Short-Term Dietary Restriction Potentiates an Anti-Inflammatory Circulating Mucosal-Associated Invariant T-Cell Response. Nutrients 2024; 16:1245. [PMID: 38674935 PMCID: PMC11053749 DOI: 10.3390/nu16081245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 04/18/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
Short-term protein-calorie dietary restriction (StDR) is a promising preoperative strategy for modulating postoperative inflammation. We have previously shown marked gut microbial activity during StDR, but relationships between StDR, the gut microbiome, and systemic immunity remain poorly understood. Mucosal-associated invariant T-cells (MAITs) are enriched on mucosal surfaces and in circulation, bridge innate and adaptive immunity, are sensitive to gut microbial changes, and may mediate systemic responses to StDR. Herein, we characterized the MAIT transcriptomic response to StDR using single-cell RNA sequencing of human PBMCs and evaluated gut microbial species-level changes through sequencing of stool samples. Healthy volunteers underwent 4 days of DR during which blood and stool samples were collected before, during, and after DR. MAITs composed 2.4% of PBMCs. More MAIT genes were differentially downregulated during DR, particularly genes associated with MAIT activation (CD69), regulation of pro-inflammatory signaling (IL1, IL6, IL10, TNFα), and T-cell co-stimulation (CD40/CD40L, CD28), whereas genes associated with anti-inflammatory IL10 signaling were upregulated. Stool analysis showed a decreased abundance of multiple MAIT-stimulating Bacteroides species during DR. The analyses suggest that StDR potentiates an anti-inflammatory MAIT immunophenotype through modulation of TCR-dependent signaling, potentially secondary to gut microbial species-level changes.
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Affiliation(s)
- Brian Fazzone
- Department of Surgery, Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL 32611, USA; (B.F.); (E.M.A.); (K.A.O.); (S.R.); (S.T.S.)
| | - Erik M. Anderson
- Department of Surgery, Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL 32611, USA; (B.F.); (E.M.A.); (K.A.O.); (S.R.); (S.T.S.)
| | - Jared M. Rozowsky
- Department of Surgery, Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL 32611, USA; (B.F.); (E.M.A.); (K.A.O.); (S.R.); (S.T.S.)
| | - Xuanxuan Yu
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA;
| | - Kerri A. O’Malley
- Department of Surgery, Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL 32611, USA; (B.F.); (E.M.A.); (K.A.O.); (S.R.); (S.T.S.)
- Malcom Randall Veteran Affairs Medical Center, Gainesville, FL 32608, USA
| | - Scott Robinson
- Department of Surgery, Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL 32611, USA; (B.F.); (E.M.A.); (K.A.O.); (S.R.); (S.T.S.)
- Malcom Randall Veteran Affairs Medical Center, Gainesville, FL 32608, USA
| | - Salvatore T. Scali
- Department of Surgery, Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL 32611, USA; (B.F.); (E.M.A.); (K.A.O.); (S.R.); (S.T.S.)
- Malcom Randall Veteran Affairs Medical Center, Gainesville, FL 32608, USA
| | - Guoshuai Cai
- Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA;
| | - Scott A. Berceli
- Department of Surgery, Division of Vascular Surgery and Endovascular Therapy, University of Florida, Gainesville, FL 32611, USA; (B.F.); (E.M.A.); (K.A.O.); (S.R.); (S.T.S.)
- Malcom Randall Veteran Affairs Medical Center, Gainesville, FL 32608, USA
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2
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Martins TS, Correia M, Pinheiro D, Lemos C, Mendes MV, Pereira C, Costa V. Sit4 Genetically Interacts with Vps27 to Regulate Mitochondrial Function and Lifespan in Saccharomyces cerevisiae. Cells 2024; 13:655. [PMID: 38667270 PMCID: PMC11049076 DOI: 10.3390/cells13080655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/27/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024] Open
Abstract
The Sit4 protein phosphatase plays a key role in orchestrating various cellular processes essential for maintaining cell viability during aging. We have previously shown that SIT4 deletion promotes vacuolar acidification, mitochondrial derepression, and oxidative stress resistance, increasing yeast chronological lifespan. In this study, we performed a proteomic analysis of isolated vacuoles and yeast genetic interaction analysis to unravel how Sit4 influences vacuolar and mitochondrial function. By employing high-resolution mass spectrometry, we show that sit4Δ vacuolar membranes were enriched in Vps27 and Hse1, two proteins that are part of the endosomal sorting complex required for transport-0. In addition, SIT4 exhibited a negative genetic interaction with VPS27, as sit4∆vps27∆ double mutants had a shortened lifespan compared to sit4∆ and vps27∆ single mutants. Our results also show that Vps27 did not increase sit4∆ lifespan by improving protein trafficking or vacuolar sorting pathways. However, Vps27 was critical for iron homeostasis and mitochondrial function in sit4∆ cells, as sit4∆vps27∆ double mutants exhibited high iron levels and impaired mitochondrial respiration. These findings show, for the first time, cross-talk between Sit4 and Vps27, providing new insights into the mechanisms governing chronological lifespan.
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Affiliation(s)
- Telma S. Martins
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.S.M.); (M.C.); (D.P.); (C.L.); (M.V.M.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Miguel Correia
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.S.M.); (M.C.); (D.P.); (C.L.); (M.V.M.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
| | - Denise Pinheiro
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.S.M.); (M.C.); (D.P.); (C.L.); (M.V.M.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
| | - Carolina Lemos
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.S.M.); (M.C.); (D.P.); (C.L.); (M.V.M.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Marta Vaz Mendes
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.S.M.); (M.C.); (D.P.); (C.L.); (M.V.M.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
| | - Clara Pereira
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.S.M.); (M.C.); (D.P.); (C.L.); (M.V.M.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
| | - Vítor Costa
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; (T.S.M.); (M.C.); (D.P.); (C.L.); (M.V.M.)
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS—Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
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3
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Bartman S, Coppotelli G, Ross JM. Mitochondrial Dysfunction: A Key Player in Brain Aging and Diseases. Curr Issues Mol Biol 2024; 46:1987-2026. [PMID: 38534746 DOI: 10.3390/cimb46030130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/28/2024] Open
Abstract
Mitochondria are thought to have become incorporated within the eukaryotic cell approximately 2 billion years ago and play a role in a variety of cellular processes, such as energy production, calcium buffering and homeostasis, steroid synthesis, cell growth, and apoptosis, as well as inflammation and ROS production. Considering that mitochondria are involved in a multitude of cellular processes, mitochondrial dysfunction has been shown to play a role within several age-related diseases, including cancers, diabetes (type 2), and neurodegenerative diseases, although the underlying mechanisms are not entirely understood. The significant increase in lifespan and increased incidence of age-related diseases over recent decades has confirmed the necessity to understand the mechanisms by which mitochondrial dysfunction impacts the process of aging and age-related diseases. In this review, we will offer a brief overview of mitochondria, along with structure and function of this important organelle. We will then discuss the cause and consequence of mitochondrial dysfunction in the aging process, with a particular focus on its role in inflammation, cognitive decline, and neurodegenerative diseases, such as Huntington's disease, Parkinson's disease, and Alzheimer's disease. We will offer insight into therapies and interventions currently used to preserve or restore mitochondrial functioning during aging and neurodegeneration.
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Affiliation(s)
- Sydney Bartman
- George and Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI 02881, USA
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Giuseppe Coppotelli
- George and Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI 02881, USA
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Jaime M Ross
- George and Anne Ryan Institute for Neuroscience, University of Rhode Island, Kingston, RI 02881, USA
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
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4
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Thyne KM, Camones R, Salmon AB. Sulfur Amino Acid Restriction alters mitochondrial function depending on tissue, sex, and Methionine sulfoxide reductase A (MsrA) status. RESEARCH SQUARE 2023:rs.3.rs-3755231. [PMID: 38196647 PMCID: PMC10775364 DOI: 10.21203/rs.3.rs-3755231/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Methionine restriction (MR) has been shown to affect mitochondrial function including altering oxygen consumption, reactive oxygen species (ROS) generation, Complex expression, and oxidative damage. The sulfur-containing amino acid methionine can become oxidized forming methionine sulfoxide which can lead to changes in protein function and signaling. Methionine sulfoxide reductases are endogenous enzymes capable of reducing methionine sulfoxide, with Methionine sulfoxide reductase A (MsrA) being ubiquitously expressed in mammals. Here we investigated if the effects of MR on mitochondrial function required functional MsrA in the liver and kidney which are the major tissues involved in sulfur biochemistry and both highly express MsrA. Moreover, MsrA is endogenously found in the mitochondria thereby providing potential mechanisms linking diet to mitochondrial phenotype. We found sex-specific changes in oxygen consumption of isolated mitochondria and females showed changes with MR in a tissue-dependent manner - increased in liver and decreased in kidney. Loss of MsrA increased or decreased oxygen consumption depending on the tissue and which portion of the electron transport chain was being tested. In general, males had few changes in either tissue regardless of MR or MsrA status. Hydrogen peroxide production was increased in the kidney with MR regardless of sex or MsrA status. However, in the liver, production was increased by MR in females and only slightly higher with loss of MsrA in both sexes. Mitochondrial Complex expression was found to be largely unchanged in either tissue suggesting these effects are driven by regulatory mechanisms and not by changes in expression. Together these results suggest that sex and MsrA status do impact the mitochondrial effects of MR in a tissue-specific manner.
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Affiliation(s)
- Kevin M Thyne
- The University of Texas Health Science Center at San Antonio
| | - Raechel Camones
- The University of Texas Health Science Center at San Antonio
| | - Adam B Salmon
- The University of Texas Health Science Center at San Antonio
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5
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Austin TT, Thomas CL, Lewis C, Blockley A, Warren B. Metabolic decline in an insect ear: correlative or causative for age-related auditory decline? Front Cell Dev Biol 2023; 11:1138392. [PMID: 37274746 PMCID: PMC10233746 DOI: 10.3389/fcell.2023.1138392] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/25/2023] [Indexed: 06/06/2023] Open
Abstract
One leading hypothesis for why we lose our hearing as we age is a decrease in ear metabolism. However, direct measurements of metabolism across a lifespan in any auditory system are lacking. Even if metabolism does decrease with age, a question remains: is a metabolic decrease a cause of age-related auditory decline or simply correlative? We use an insect, the desert locust Schistocerca gregaria, as a physiologically versatile model to understand how cellular metabolism correlates with age and impacts on age-related auditory decline. We found that auditory organ metabolism decreases with age as measured fluorometrically. Next, we measured the individual auditory organ's metabolic rate and its sound-evoked nerve activity and found no correlation. We found no age-related change in auditory nerve activity, using hook electrode recordings, and in the electrophysiological properties of auditory neurons, using patch-clamp electrophysiology, but transduction channel activity decreased. To further test for a causative role of the metabolic rate in auditory decline, we manipulated metabolism of the auditory organ through diet and cold-rearing but found no difference in sound-evoked nerve activity. We found that although metabolism correlates with age-related auditory decline, it is not causative. Finally, we performed RNA-Seq on the auditory organs of young and old locusts, and whilst we found enrichment for Gene Ontology terms associated with metabolism, we also found enrichment for a number of additional aging GO terms. We hypothesize that age-related hearing loss is dominated by accumulative damage in multiple cell types and multiple processes which outweighs its metabolic decline.
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6
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Whitehall JC, Smith ALM, Greaves LC. Mitochondrial DNA Mutations and Ageing. Subcell Biochem 2023; 102:77-98. [PMID: 36600130 DOI: 10.1007/978-3-031-21410-3_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Mitochondria are subcellular organelles present in most eukaryotic cells which play a significant role in numerous aspects of cell biology. These include carbohydrate and fatty acid metabolism to generate cellular energy through oxidative phosphorylation, apoptosis, cell signalling, haem biosynthesis and reactive oxygen species production. Mitochondrial dysfunction is a feature of many human ageing tissues, and since the discovery that mitochondrial DNA mutations were a major underlying cause of changes in oxidative phosphorylation capacity, it has been proposed that they have a role in human ageing. However, there is still much debate on whether mitochondrial DNA mutations play a causal role in ageing or are simply a consequence of the ageing process. This chapter describes the structure of mammalian mitochondria, and the unique features of mitochondrial genetics, and reviews the current evidence surrounding the role of mitochondrial DNA mutations in the ageing process. It then focusses on more recent discoveries regarding the role of mitochondrial dysfunction in stem cell ageing and age-related inflammation.
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Affiliation(s)
- Julia C Whitehall
- Wellcome Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK
| | - Anna L M Smith
- Wellcome Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK
| | - Laura C Greaves
- Wellcome Centre for Mitochondrial Research, Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK.
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7
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Nasidi I, Kaygili O, Majid A, Bulut N, Alkhedher M, ElDin SM. Halogen Doping to Control the Band Gap of Ascorbic Acid: A Theoretical Study. ACS OMEGA 2022; 7:44390-44397. [PMID: 36506119 PMCID: PMC9730502 DOI: 10.1021/acsomega.2c06075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/10/2022] [Indexed: 06/17/2023]
Abstract
Ascorbic acid is an important antioxidant agent that acts as an electron donor and is involved in many physiological processes. Structural modification in ascorbic acid is a subject of extensive biochemical research due to its involvement in a variety of relevant phenomena including electron transport, complex redox reactions, neurochemical reactions, enzymatic reactions, and chemotherapeutic potential. In this work, the structure of ascorbic acid is modified via doping with the first three members of the halogen group to investigate the changes in the electronic structure and spectroscopic parameters using first-principles methods. To obtain the lowest-energy structures, different basis sets in density functional theory (DFT) and Hartree-Fock approaches were employed in the geometry optimization process. The potential energy maps of the structures were computed to study the molecular orientations and their optical and electrical properties. The spectroscopic properties were computed via UV-vis and nuclear magnetic resonance (NMR) spectroscopies to study the effects of doping into the compound. To obtain further insights into the chemical structure, the Fourier transform infrared (FT-IR) spectra of the materials were theoretically investigated. It was found that the band gap is sensitive to doping as we moved from fluorine to chlorine and then to bromine.
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Affiliation(s)
- Ibrahim
Isah Nasidi
- Department
of Physics, Faculty of Science, Firat University, 23119 Elazig, Turkey
| | - Omer Kaygili
- Department
of Physics, Faculty of Science, Firat University, 23119 Elazig, Turkey
| | - Abdul Majid
- Department
of Physics, University of Gujrat, Gujrat 50700, Pakistan
| | - Niyazi Bulut
- Department
of Physics, Faculty of Science, Firat University, 23119 Elazig, Turkey
| | - Mohammad Alkhedher
- Mechanical
and Industrial Engineering Department, Abu
Dhabi University, Abu Dhabi 111188, United
Arab Emirates
| | - Sayed M. ElDin
- Center
of Research, Faculty of Engineering & Technology, Future University in Egypt, New Cairo 11835, Egypt
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8
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Peng S, Gao J, Stojkov D, Yousefi S, Simon H. Established and emerging roles for mitochondria in neutrophils. Immunol Rev 2022; 314:413-426. [PMID: 36331270 DOI: 10.1111/imr.13158] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Neutrophils are the most abundant innate immune cells in human blood, emerging as important players in a variety of diseases. Mitochondria are bioenergetic, biosynthetic, and signaling organelles critical for cell fate and function. Mitochondria have been overlooked in neutrophil research owing to the conventional view that neutrophils contain few, if any, competent mitochondria and do not rely on these organelles for adenosine triphosphate production. A growing body of evidence suggests that mitochondria participate in neutrophil biology at many levels, ranging from neutrophil development to chemotaxis, effector function, and cell death. Moreover, mitochondria and mitochondrial components, such as mitochondrial deoxyribonucleic acid, can be released by neutrophils to eliminate infection and/or shape immune response, depending on the specific context. In this review, we provide an update on the functional role of mitochondria in neutrophils, highlight mitochondria as key players in modulating the neutrophil phenotype and function during infection and inflammation, and discuss the possibilities and challenges to exploit the unique aspects of mitochondria in neutrophils for disease treatment.
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Affiliation(s)
- Shuang Peng
- Institute of Pharmacology University of Bern Bern Switzerland
| | - Jian Gao
- Department of Molecular and Cellular Oncology The University of Texas MD Anderson Cancer Center Houston Texas USA
| | - Darko Stojkov
- Institute of Pharmacology University of Bern Bern Switzerland
| | - Shida Yousefi
- Institute of Pharmacology University of Bern Bern Switzerland
| | - Hans‐Uwe Simon
- Institute of Pharmacology University of Bern Bern Switzerland
- Department of Clinical Immunology and Allergology Sechenov University Moscow Russia
- Laboratory of Molecular Immunology, Institute of Fundamental Medicine and Biology Kazan Federal University Kazan Russia
- Institute of Biochemistry, Brandenburg Medical School Neuruppin Germany
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Shelton MG, Kerns KA, Castora FJ, Coleman RA. Incorporating Mitochondrial Gene Expression Changes Within a Testable Mathematical Model for Alzheimer’s Disease: Stress Response Modulation Predicts Potential Therapeutic Targets. J Alzheimers Dis 2022; 90:109-117. [DOI: 10.3233/jad-220163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background: Alzheimer’s disease is a specific form of dementia characterized by the aggregation of amyloid-β plaques and tau tangles. New research has found that the formation of these aggregates occurs after dysregulation of cellular respiration and the production of radical oxygen species. Proteomic data shows that these changes are also related to unique gene expression patterns. Objective: This study is designed to incorporate both proteomic and gene expression data into a testable mathematical model for AD. Manipulation of this new model allows the identification of potential therapeutic targets for AD. Methods: We investigate the impact of these findings on new therapeutic targets via metabolic flux analysis of sirtuin stress response pathways while also highlighting the importance of metabolic enzyme activity in maintaining proper respiratory activity. Results: Our results indicate that protective changes in SIRT1 and AMPK expression are potential avenues for therapeutics. Conclusion: Combining our mitochondrial gene expression analyses with available protein data allowed the construction of a new mathematical model for AD that provides a useful approach to test the efficacy of potential AD therapeutic targets.
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Affiliation(s)
- Morgan G. Shelton
- Department of Chemistry, The College of William and Mary, Williamsburg, VA, USA
| | - Kimberly A. Kerns
- Department of Physiological Sciences, Division of Biochemistry, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Frank J. Castora
- Department of Physiological Sciences, Division of Biochemistry, Eastern Virginia Medical School, Norfolk, VA, USA
- Department of Neurology, Eastern Virginia Medical School, Norfolk, VA, USA
| | - Randolph A. Coleman
- Department of Chemistry, The College of William and Mary, Williamsburg, VA, USA
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Todorova A, Todorova T. Apricot kernels' extract and amygdalin alter bleomycin-induced Ty1 retrotransposition, mitotic gene conversion in the trp-5 locus and reverse point mutations in ilv1-92 allele in Saccharomyces cerevisiae. Arch Microbiol 2022; 204:542. [PMID: 35932430 DOI: 10.1007/s00203-022-03155-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 11/02/2022]
Abstract
The present study aims to analyze the effect of apricot kernels' extract (AKE) and amygdalin (AMY) on bleomycin-induced genetic alternations. Five endpoints were analyzed: cell survival, Ty1 retrotransposition, mitotic gene conversion in the trp-5 locus, reverse point mutations in ilv1-92 allele, and mitotic crossing-over in the ade2 locus. The present work provides the first experimental evidence that bleomycin induces Ty1 retrotransposition in Saccharomyces cerevisiae. New data is obtained that the degree of DNA protection of AMY and AKE depends on the studied genetic event. AKE has been found to provide significant protection against bleomycin-induced Ty1 retrotransposition due to better-expressed antioxidant potential. On the other side, AMY better-expressed protection against bleomycin-induced mitotic gene conversion and reverse mutations may be attributed to the activation of the repair enzymes.
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Affiliation(s)
- Atanaska Todorova
- Faculty of Biology, Sofia University "St. Kliment Ohridski", 8 Dragan Tsankov Blvd, 1164, Sofia, Bulgaria
| | - Teodora Todorova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Str., 1113, Sofia, Bulgaria.
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11
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Swaminathan A, Cesanelli L, Venckunas T, Degens H. Impact of methionine restriction on muscle aerobic metabolism and hypertrophy in young and old mice on an obesogenic diet. Growth Factors 2022; 40:108-118. [PMID: 35658773 DOI: 10.1080/08977194.2022.2083963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Abstract
Methionine restriction (MR) reduces inflammation and increases longevity. We studied the effects of MR (0.17% kCal methionine, 10% kCal fat) and MR + high-fat diet (HFD) (0.17% methionine, 45% kCal fat) and overload-induced hypertrophy on inflammation, angiogenesis and mitochondrial activity in the hind-limb muscle in 10- and 26-month-old male C57BL/6J mice. Plasma IL-6 concentrations were higher in old compared to young mice. M. plantaris hypertrophy was accompanied by increased p-Akt, without a significant change in Akt and VEGF levels. In young mice on a HFD or MR + HFD diet the SDH activity was higher than in those from mice on other diets, irrespective of overload. There were no significant differences in total NAD concentration in the m. gastrocnemius. MR enhanced the skeletal muscle hypertrophic response in old age that was accompanied with an increase in p-Akt without significant changes in muscle oxidative capacity, low-grade systemic inflammation, NAD, VEGF or Akt levels.
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Affiliation(s)
- Anandini Swaminathan
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Leonardo Cesanelli
- Department of Health Promotion and Rehabilitation, Lithuanian Sports University, Kaunas, Lithuania
| | - Tomas Venckunas
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Hans Degens
- Institute of Sport Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
- Department of Life Sciences, Research Centre for Musculoskeletal Science and Sports Medicine, Manchester Metropolitan University, Manchester, UK
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12
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Serna JDC, Amaral AG, Caldeira da Silva CC, Munhoz AC, Vilas-Boas EA, Menezes-Filho SL, Kowaltowski AJ. Regulation of Kidney Mitochondrial Function by Caloric Restriction. Am J Physiol Renal Physiol 2022; 323:F92-F106. [PMID: 35499238 DOI: 10.1152/ajprenal.00461.2021] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Caloric restriction (CR) prevents obesity and increases resilience against pathological stimuli in laboratory rodents. At the mitochondrial level, protection promoted by CR in the brain and liver is related to higher calcium uptake rates and capacities, avoiding Ca2+-induced mitochondrial permeability transition. Dietary restriction has also been shown to increase kidney resistance against damaging stimuli, but if these effects are related to similar mitochondrial adaptations has not been uncovered. Here, we characterized changes in mitochondrial function in response to six months CR in rats, measuring bioenergetic parameters, redox balance and calcium homeostasis. CR promoted an increase in succinate-supported mitochondrial oxygen consumption rates. While CR prevents mitochondrial reactive oxygen species production in many tissues, in kidney we found that mitochondrial H2O2 release was enhanced in a succinate-dependent manner. Surprisingly, and opposite to the effects observed in brain and liver, mitochondria from CR animals are more prone to Ca2+-induced mitochondrial permeability transition, in a manner reversed by antioxidant dithiothreitol. CR mitochondria also displayed higher calcium uptake rates, which were not accompanied by changes in calcium efflux rates, nor related to altered inner mitochondrial membrane potentials or amounts of the mitochondrial calcium uniporter (MCU). Instead, increased mitochondrial calcium uptake rates in CR kidneys correlate with a loss of MICU2, an MCU modulator. Interestingly, MICU2 is also modulated by CR in liver, suggesting it has a broader diet-sensitive regulatory role controlling mitochondrial calcium homeostasis. Together, our results highlight the organ-specific bioenergetic, redox, and ionic transport effects of CR, with some unexpected deleterious effects in kidney.
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Affiliation(s)
- Julian D C Serna
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Andressa G Amaral
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | | | - Ana Cláudia Munhoz
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | | | - Sergio L Menezes-Filho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
| | - Alicia J Kowaltowski
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil
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13
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Burtscher J, Romani M, Bernardo G, Popa T, Ziviani E, Hummel FC, Sorrentino V, Millet GP. Boosting mitochondrial health to counteract neurodegeneration. Prog Neurobiol 2022; 215:102289. [DOI: 10.1016/j.pneurobio.2022.102289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/23/2022] [Accepted: 05/25/2022] [Indexed: 12/22/2022]
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14
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Gao X, Yu X, Zhang C, Wang Y, Sun Y, Sun H, Zhang H, Shi Y, He X. Telomeres and Mitochondrial Metabolism: Implications for Cellular Senescence and Age-related Diseases. Stem Cell Rev Rep 2022; 18:2315-2327. [PMID: 35460064 PMCID: PMC9033418 DOI: 10.1007/s12015-022-10370-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2022] [Indexed: 02/06/2023]
Abstract
Cellular senescence is an irreversible cell arrest process, which is determined by a variety of complicated mechanisms, including telomere attrition, mitochondrial dysfunction, metabolic disorders, loss of protein homeostasis, epigenetic changes, etc. Cellular senescence is causally related to the occurrence and development of age-related disease. The elderly is liable to suffer from disorders such as neurodegenerative diseases, cancer, and diabetes. Therefore, it is increasingly imperative to explore specific countermeasures for the treatment of age-related diseases. Numerous studies on humans and mice emphasize the significance of metabolic imbalance caused by short telomeres and mitochondrial damages in the onset of age-related diseases. Although the experimental data are relatively independent, more and more evidences have shown that there is mutual crosstalk between telomeres and mitochondrial metabolism in the process of cellular senescence. This review systematically discusses the relationship between telomere length, mitochondrial metabolic disorder, as well as their underlying mechanisms for cellular senescence and age-related diseases. Future studies on telomere and mitochondrial metabolism may shed light on potential therapeutic strategies for age-related diseases. Graphical Abstract The characteristics of cellular senescence mainly include mitochondrial dysfunction and telomere attrition. Mitochondrial dysfunction will cause mitochondrial metabolic disorders, including decreased ATP production, increased ROS production, as well as enhanced cellular apoptosis. While oxidative stress reaction to produce ROS, leads to DNA damage, and eventually influences telomere length. Under the stimulation of oxidative stress, telomerase catalytic subunit TERT mainly plays an inhibitory role on oxidative stress, reduces the production of ROS and protects telomere function. Concurrently, mitochondrial dysfunction and telomere attrition eventually induce a range of age-related diseases, such as T2DM, osteoporosis, AD, etc. :increase; :reduce;⟝:inhibition.
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Affiliation(s)
- Xingyu Gao
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Xiao Yu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Chang Zhang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Yiming Wang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Yanan Sun
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Hui Sun
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Haiying Zhang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Yingai Shi
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China
| | - Xu He
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Street, Changchun, 130021, China.
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15
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Liu Q, Chang CE, Wooldredge AC, Fong B, Kennedy BK, Zhou C. Tom70-based transcriptional regulation of mitochondrial biogenesis and aging. eLife 2022; 11:e75658. [PMID: 35234609 PMCID: PMC8926401 DOI: 10.7554/elife.75658] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 03/01/2022] [Indexed: 11/13/2022] Open
Abstract
Mitochondrial biogenesis has two major steps: the transcriptional activation of nuclear genome-encoded mitochondrial proteins and the import of nascent mitochondrial proteins that are synthesized in the cytosol. These nascent mitochondrial proteins are aggregation-prone and can cause cytosolic proteostasis stress. The transcription factor-dependent transcriptional regulations and the TOM-TIM complex-dependent import of nascent mitochondrial proteins have been extensively studied. Yet, little is known regarding how these two steps of mitochondrial biogenesis coordinate with each other to avoid the cytosolic accumulation of these aggregation-prone nascent mitochondrial proteins. Here, we show that in budding yeast, Tom70, a conserved receptor of the TOM complex, moonlights to regulate the transcriptional activity of mitochondrial proteins. Tom70's transcription regulatory role is conserved in Drosophila. The dual roles of Tom70 in both transcription/biogenesis and import of mitochondrial proteins allow the cells to accomplish mitochondrial biogenesis without compromising cytosolic proteostasis. The age-related reduction of Tom70, caused by reduced biogenesis and increased degradation of Tom70, is associated with the loss of mitochondrial membrane potential, mtDNA, and mitochondrial proteins. While loss of Tom70 accelerates aging and age-related mitochondrial defects, overexpressing TOM70 delays these mitochondrial dysfunctions and extends the replicative lifespan. Our results reveal unexpected roles of Tom70 in mitochondrial biogenesis and aging.
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Affiliation(s)
- Qingqing Liu
- Buck Institute for Research on AgingNovatoUnited States
| | | | | | - Benjamin Fong
- Buck Institute for Research on AgingNovatoUnited States
| | - Brian K Kennedy
- Buck Institute for Research on AgingNovatoUnited States
- Healthy Longevity Programme, Yong Loo Lin School of Medicine, National University of SingaporeSingaporeSingapore
- Centre for Healthy Longevity, National University Health SystemSingaporeSingapore
- Singapore Institute of Clinical Sciences, A(∗)STARSingaporeSingapore
| | - Chuankai Zhou
- Buck Institute for Research on AgingNovatoUnited States
- USC Leonard Davis School of Gerontology, University of Southern CaliforniaLos AngelesUnited States
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16
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Ferrucci L, Wilson DM, Donegà S, Gorospe M. The energy-splicing resilience axis hypothesis of aging. NATURE AGING 2022; 2:182-185. [PMID: 37118371 PMCID: PMC11330567 DOI: 10.1038/s43587-022-00189-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Aging can be conceptualized as the stochastic accumulation of damage and loss of resilience leading to organism demise. Resilience mechanisms that repair, recycle or replace damaged molecules and organelles are energy-demanding, therefore energy availability is essential to healthy aging. We propose that changes in mitochondrial and energy status regulate RNA splicing and that splicing is a resilience strategy that preserves energetic homeostasis with aging.
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Affiliation(s)
- Luigi Ferrucci
- Biomedical Research Center, National Institute on Aging, National Institute of Health, Baltimore, MD, USA.
| | - David M Wilson
- Biomedical Research Institute, Hasselt University, Diepenbeek, Belgium
| | - Stefano Donegà
- Biomedical Research Center, National Institute on Aging, National Institute of Health, Baltimore, MD, USA
| | - Myriam Gorospe
- Biomedical Research Center, National Institute on Aging, National Institute of Health, Baltimore, MD, USA
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17
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Increased peroxisome proliferation is associated with early yeast replicative ageing. Curr Genet 2022; 68:207-225. [DOI: 10.1007/s00294-022-01233-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 11/03/2022]
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18
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Wilson KA, Chamoli M, Hilsabeck TA, Pandey M, Bansal S, Chawla G, Kapahi P. Evaluating the beneficial effects of dietary restrictions: A framework for precision nutrigeroscience. Cell Metab 2021; 33:2142-2173. [PMID: 34555343 PMCID: PMC8845500 DOI: 10.1016/j.cmet.2021.08.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/17/2021] [Accepted: 08/30/2021] [Indexed: 12/12/2022]
Abstract
Dietary restriction (DR) has long been viewed as the most robust nongenetic means to extend lifespan and healthspan. Many aging-associated mechanisms are nutrient responsive, but despite the ubiquitous functions of these pathways, the benefits of DR often vary among individuals and even among tissues within an individual, challenging the aging research field. Furthermore, it is often assumed that lifespan interventions like DR will also extend healthspan, which is thus often ignored in aging studies. In this review, we provide an overview of DR as an intervention and discuss the mechanisms by which it affects lifespan and various healthspan measures. We also review studies that demonstrate exceptions to the standing paradigm of DR being beneficial, thus raising new questions that future studies must address. We detail critical factors for the proposed field of precision nutrigeroscience, which would utilize individualized treatments and predict outcomes using biomarkers based on genotype, sex, tissue, and age.
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Affiliation(s)
| | - Manish Chamoli
- The Buck Institute for Research on Aging, Novato, CA 94945, USA
| | - Tyler A Hilsabeck
- The Buck Institute for Research on Aging, Novato, CA 94945, USA; Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Manish Pandey
- Regional Centre for Biotechnology, Faridabad, Haryana 121001, India
| | - Sakshi Bansal
- Regional Centre for Biotechnology, Faridabad, Haryana 121001, India
| | - Geetanjali Chawla
- Regional Centre for Biotechnology, Faridabad, Haryana 121001, India.
| | - Pankaj Kapahi
- The Buck Institute for Research on Aging, Novato, CA 94945, USA; Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA.
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19
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Wang M, Xu P, Liao L, Gao L, Amakye WK, Zhang Y, Yao M, Ren J. Haematococcus Pluvialis Extends Yeast Lifespan and Improves Slc25a46 Gene Knockout-Associated Mice Phenotypic Defects. Mol Nutr Food Res 2021; 65:e2100086. [PMID: 34672083 DOI: 10.1002/mnfr.202100086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 09/02/2021] [Indexed: 12/18/2022]
Abstract
SCOPE Aging has become one of major concern worldwide. It is therefore of great significance in finding food resources as therapeutic candidates for aging-related functional decline improvement and prevention. This study aimed to define the potency of Haematococcus pluvialis (H. pluvialis) as an anti-aging food resource. METHODS AND RESULTS Yeast is used to explore the anti-aging effects of H. pluvialis. The result showed that H. pluvialis extract could effectively extend yeast chronological lifespan (CLS) by reducing intracellular reactive oxygen species (ROS) levels, promoting mitochondrial membrane potential (MMP) levels and accumulating storage carbohydrate (glycogen). Subsequently, Slc25a46 knockout (Slc25a46-/- ) mice with mitochondrial dysfunction are fed with 100 mg kg-1 H. pluvialis extracts for 10 days. The in vivo data demonstrated that H. pluvialis extract could effectively improve the phenotypic deficits, including underweight, muscle weakness, redox imbalance, and mitochondrial respiratory chain dysfunction, etc., in Slc25a46-/- mice. CONCLUSIONS This work highlights that the mitochondria may be a potential therapeutic target for combating aging, and demonstrated that H. pluvialis, as a dietary supplement, may potentially be an effective preventive substance that may contribute to the promotion of healthy aging.
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Affiliation(s)
- Min Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Piao Xu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Linfeng Liao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Li Gao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - William Kwame Amakye
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Ying Zhang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
| | - Maojin Yao
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, 510182, China
| | - Jiaoyan Ren
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, China
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20
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Antiaging and Antioxidant Bioactivities of Asteraceae Plant Fractions on the Cellular Functions of the Yeast Schizosaccharomyces pombe. Adv Pharmacol Pharm Sci 2021; 2021:2119634. [PMID: 34589709 PMCID: PMC8476265 DOI: 10.1155/2021/2119634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 08/11/2021] [Accepted: 09/07/2021] [Indexed: 01/23/2023] Open
Abstract
Research on antioxidants has been gaining worldwide attention because of their essential applications for medicinal purposes. In this study, we conducted bioprospecting of six Asteraceae plants as the source of antiaging and antioxidant agents. Water and chloroform fractions from Ageratum conyzoides L., Dichrocephala integrifolia (L.f.) Kuntze, Galinsoga parviflora (Cav.), Mikania micrantha Kunth, Sphagneticola trilobata (L.) Pruski, and Synedrella nodiflora L. were collected and assayed for their in vitro antioxidant activities and potential antiaging properties using the yeast Schizosaccharomyces pombe as the model organism. Based on the in vitro assay, the water fractions of S. trilobata showed a strong antioxidant activity. Interestingly, all treatment solutions promoted the stress tolerance phenotype of S. pombe to strong H2O2-induced oxidative stress conditions. Moreover, compared with the treatments without plant extract/fraction, all extract and fraction treatments, except the chloroform fractions of A. conyzoides, promoted yeast cell longevity. Strong induction of mitochondria activity was found following the treatments with the extracts and fractions of S. nodiflora, D. integrifolia, and M. micrantha and likely mimicked the calorie restriction-induced lifespan. Interestingly, S. nodiflora water fractions significantly upregulated the mRNA transcripts of the Pap1-mediated core environmental stress response, namely, ctt1 gene in S. pombe. These data indicated that the fractions of Asteraceae plants had potential antioxidant and antiaging activities through various cellular modulations. S. nodiflora water fraction has been shown to have antioxidant and antiaging activities in S. pombe, by modulating stress tolerance response, inducing mitochondrial activity, and increasing the ctt1 gene expression. Compounds analysis identified that S. nodiflora water fraction contained some primarily compounds including oxyphyllacinol, valine, and sugiol.
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21
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Zhao W, Guo F, Kong L, Liu J, Hong X, Jiang Z, Song H, Cui X, Ruan J, Liu X. Yeast YPK9 deficiency results in shortened replicative lifespan and sensitivity to hydrogen peroxide. Biogerontology 2021; 22:547-563. [PMID: 34524607 DOI: 10.1007/s10522-021-09935-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 08/26/2021] [Indexed: 11/26/2022]
Abstract
YPK9/YOR291W of Saccharomyces cerevisiae encodes a vacuolar membrane protein. Previous research has suggested that Ypk9p is similar to the yeast P5-type ATPase Spf1p and that it plays a role in the sequestration of heavy metals. In addition, bioinformatics analysis has suggested that Ypk9p is a homolog of human ATP13A2, which encodes a protein of the subfamily of P5 ATPases. However, no specific function of Ypk9p has been described to date. In this study, we found, for the first time, that YPK9 is involved in the oxidative stress response and modulation of the replicative lifespan (RLS). We found that YPK9 deficiency confers sensitivity to the oxidative stress inducer hydrogen peroxide accompanied by increased intracellular ROS levels, decreased mitochondrial membrane potential, abnormal mitochondrial function, and increased incidence of early apoptosis in budding yeast. More importantly, YPK9 deficiency can lead to a shortened RLS. In addition, we found that overexpression of the catalase-encoding gene CTA1 can reverse the phenotypic abnormalities of the ypk9Δ yeast strain. Collectively, these findings highlight the involvement of Ypk9p in the oxidative stress response and modulation of RLS.
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Affiliation(s)
- Wei Zhao
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China
| | - Fang Guo
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China
| | - Lingyue Kong
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China
| | - Jiaxin Liu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China
| | - Xiaoshan Hong
- Institute of Gynecology, Women and Children's Hospital of Guangdong Province, Guangzhou, 511442, China
| | - Zhiwen Jiang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China
| | - Haochang Song
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China
| | - Xiaojing Cui
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China
| | - Jie Ruan
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China.
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China.
| | - Xinguang Liu
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Aging Research, Guangdong Medical University, Dongguan, 523808, China.
- Institute of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, 523808, China.
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22
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Farshbafnadi M, Kamali Zonouzi S, Sabahi M, Dolatshahi M, Aarabi MH. Aging & COVID-19 susceptibility, disease severity, and clinical outcomes: The role of entangled risk factors. Exp Gerontol 2021; 154:111507. [PMID: 34352287 PMCID: PMC8329427 DOI: 10.1016/j.exger.2021.111507] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 02/07/2023]
Abstract
The emergence of Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2) in late 2019 has been associated with a high rate of mortality and morbidity. It has been determined that the old population are not only at an increased risk for affliction with COVID-19 infection, but also atypical presentations, severe forms of the disease, and mortality are more common in this population. A plethora of mechanisms and risk factors contribute to the higher risk of infection in the old population. For instance, aging is associated with an increment in the expression of Angiotensin-Converting Enzyme-2 (ACE-2), the receptor for SARS-CoV-2 spike protein, which precipitates replication of the virus in the old population. On the other hand, immune dysregulation and changes in gut microbiota as a result of aging can contribute to the cytokine storm, one of the main indicators of disease severity. Decrement in sex steroids, especially in women, as well as growth hormone, both of which have crucial roles in immune regulation, is a key contributor to disease severity in old age. Senescence-associated oxidative stress and mitochondrial dysfunction in both pneumocytes and immune cells contribute to the severity of infection in an exacerbative manner. In addition, lifestyle-associated factors such as nutrition and physical activity, which are compromised in old age, are known as important factors in COVID-19 infection. Aging-associated comorbidities, especially cardiovascular diseases and diabetes mellitus, also put older adults at an increased risk of complications, and disease severity.
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Affiliation(s)
| | - Sara Kamali Zonouzi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| | - Mohammadmahdi Sabahi
- NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), Tehran, Iran; Neurosurgery Research Group (NRG), Student Research Committee, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Mahsa Dolatshahi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| | - Mohammad Hadi Aarabi
- Padova Neuroscience Center (PNC), Department of Neuroscience, University of Padova, Padova, Italy.
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Choi LS, Shi C, Ashraf J, Sohrabi S, Murphy CT. Oleic Acid Protects Caenorhabditis Mothers From Mating-Induced Death and the Cost of Reproduction. Front Cell Dev Biol 2021; 9:690373. [PMID: 34179018 PMCID: PMC8226236 DOI: 10.3389/fcell.2021.690373] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 05/11/2021] [Indexed: 11/17/2022] Open
Abstract
Reproduction comes at a cost, including accelerated death. Previous studies of the interconnections between reproduction, lifespan, and fat metabolism in C. elegans were predominantly performed in low-reproduction conditions. To understand how increased reproduction affects lifespan and fat metabolism, we examined mated worms; we find that a Δ9 desaturase, FAT-7, is significantly up-regulated. Dietary supplementation of oleic acid (OA), the immediate downstream product of FAT-7 activity, restores fat storage and completely rescues mating-induced death, while other fatty acids cannot. OA-mediated lifespan restoration is also observed in C. elegans mutants suffering increased death from short-term mating, and in mated C. remanei females, indicating a conserved role of oleic acid in post-mating lifespan regulation. Our results suggest that increased reproduction can be uncoupled from the costs of reproduction from somatic longevity regulation if provided with the limiting lipid, oleic acid.
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Affiliation(s)
- Leo S Choi
- Department of Molecular Biology, Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, United States
| | - Cheng Shi
- Department of Molecular Biology, Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, United States
| | - Jasmine Ashraf
- Department of Molecular Biology, Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, United States
| | - Salman Sohrabi
- Department of Molecular Biology, Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, United States
| | - Coleen T Murphy
- Department of Molecular Biology, Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, United States
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24
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Eigenfeld M, Kerpes R, Becker T. Understanding the Impact of Industrial Stress Conditions on Replicative Aging in Saccharomyces cerevisiae. FRONTIERS IN FUNGAL BIOLOGY 2021; 2:665490. [PMID: 37744109 PMCID: PMC10512339 DOI: 10.3389/ffunb.2021.665490] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/30/2021] [Indexed: 09/26/2023]
Abstract
In yeast, aging is widely understood as the decline of physiological function and the decreasing ability to adapt to environmental changes. Saccharomyces cerevisiae has become an important model organism for the investigation of these processes. Yeast is used in industrial processes (beer and wine production), and several stress conditions can influence its intracellular aging processes. The aim of this review is to summarize the current knowledge on applied stress conditions, such as osmotic pressure, primary metabolites (e.g., ethanol), low pH, oxidative stress, heat on aging indicators, age-related physiological changes, and yeast longevity. There is clear evidence that yeast cells are exposed to many stressors influencing viability and vitality, leading to an age-related shift in age distribution. Currently, there is a lack of rapid, non-invasive methods allowing the investigation of aspects of yeast aging in real time on a single-cell basis using the high-throughput approach. Methods such as micromanipulation, centrifugal elutriator, or biotinylation do not provide real-time information on age distributions in industrial processes. In contrast, innovative approaches, such as non-invasive fluorescence coupled flow cytometry intended for high-throughput measurements, could be promising for determining the replicative age of yeast cells in fermentation and its impact on industrial stress conditions.
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Affiliation(s)
| | - Roland Kerpes
- Research Group Beverage and Cereal Biotechnology, Institute of Brewing and Beverage Technology, Technical University of Munich, Freising, Germany
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25
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Wauters R, Britton SJ, Verstrepen KJ. Old yeasts, young beer-The industrial relevance of yeast chronological life span. Yeast 2021; 38:339-351. [PMID: 33978982 PMCID: PMC8252602 DOI: 10.1002/yea.3650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/28/2021] [Accepted: 05/09/2021] [Indexed: 12/20/2022] Open
Abstract
Much like other living organisms, yeast cells have a limited life span, in terms of both the maximal length of time a cell can stay alive (chronological life span) and the maximal number of cell divisions it can undergo (replicative life span). Over the past years, intensive research revealed that the life span of yeast depends on both the genetic background of the cells and environmental factors. Specifically, the presence of stress factors, reactive oxygen species, and the availability of nutrients profoundly impact life span, and signaling cascades involved in the response to these factors, including the target of rapamycin (TOR) and cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA) pathways, play a central role. Interestingly, yeast life span also has direct implications for its use in industrial processes. In beer brewing, for example, the inoculation of finished beer with live yeast cells, a process called "bottle conditioning" helps improve the product's shelf life by clearing undesirable carbonyl compounds such as furfural and 2-methylpropanal that cause staling. However, this effect depends on the reductive metabolism of living cells and is thus inherently limited by the cells' chronological life span. Here, we review the mechanisms underlying chronological life span in yeast. We also discuss how this insight connects to industrial observations and ultimately opens new routes towards superior industrial yeasts that can help improve a product's shelf life and thus contribute to a more sustainable industry.
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Affiliation(s)
- Ruben Wauters
- Laboratory for Systems BiologyVIB Center for MicrobiologyLeuvenBelgium
- CMPG Laboratory of Genetics and Genomics, Department M2SKU LeuvenLeuvenBelgium
| | - Scott J. Britton
- Research and DevelopmentDuvel MoortgatPuurs‐Sint‐AmandsBelgium
- International Centre for Brewing and Distilling, Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical SciencesHeriot‐Watt UniversityEdinburghUK
| | - Kevin J. Verstrepen
- Laboratory for Systems BiologyVIB Center for MicrobiologyLeuvenBelgium
- CMPG Laboratory of Genetics and Genomics, Department M2SKU LeuvenLeuvenBelgium
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Restoration of energy homeostasis by SIRT6 extends healthy lifespan. Nat Commun 2021; 12:3208. [PMID: 34050173 PMCID: PMC8163764 DOI: 10.1038/s41467-021-23545-7] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 04/30/2021] [Indexed: 02/04/2023] Open
Abstract
Aging leads to a gradual decline in physical activity and disrupted energy homeostasis. The NAD+-dependent SIRT6 deacylase regulates aging and metabolism through mechanisms that largely remain unknown. Here, we show that SIRT6 overexpression leads to a reduction in frailty and lifespan extension in both male and female B6 mice. A combination of physiological assays, in vivo multi-omics analyses and 13C lactate tracing identified an age-dependent decline in glucose homeostasis and hepatic glucose output in wild type mice. In contrast, aged SIRT6-transgenic mice preserve hepatic glucose output and glucose homeostasis through an improvement in the utilization of two major gluconeogenic precursors, lactate and glycerol. To mediate these changes, mechanistically, SIRT6 increases hepatic gluconeogenic gene expression, de novo NAD+ synthesis, and systemically enhances glycerol release from adipose tissue. These findings show that SIRT6 optimizes energy homeostasis in old age to delay frailty and preserve healthy aging.
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Chimienti G, Picca A, Fracasso F, Russo F, Orlando A, Riezzo G, Leeuwenburgh C, Pesce V, Lezza AMS. The Age-Sensitive Efficacy of Calorie Restriction on Mitochondrial Biogenesis and mtDNA Damage in Rat Liver. Int J Mol Sci 2021; 22:ijms22041665. [PMID: 33562258 PMCID: PMC7915472 DOI: 10.3390/ijms22041665] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 12/20/2022] Open
Abstract
Calorie restriction (CR) is the most efficacious treatment to delay the onset of age-related changes such as mitochondrial dysfunction. However, the sensitivity of mitochondrial markers to CR and the age-related boundaries of CR efficacy are not fully elucidated. We used liver samples from ad libitum-fed (AL) rats divided in: 18-month-old (AL-18), 28-month-old (AL-28), and 32-month-old (AL-32) groups, and from CR-treated (CR) 28-month-old (CR-28) and 32-month-old (CR-32) counterparts to assay the effect of CR on several mitochondrial markers. The age-related decreases in citrate synthase activity, in TFAM, MFN2, and DRP1 protein amounts and in the mtDNA content in the AL-28 group were prevented in CR-28 counterparts. Accordingly, CR reduced oxidative mtDNA damage assessed through the incidence of oxidized purines at specific mtDNA regions in CR-28 animals. These findings support the anti-aging effect of CR up to 28 months. Conversely, the protein amounts of LonP1, Cyt c, OGG1, and APE1 and the 4.8 Kb mtDNA deletion content were not affected in CR-28 rats. The absence of significant differences between the AL-32 values and the CR-32 counterparts suggests an age-related boundary of CR efficacy at this age. However, this only partially curtails the CR benefits in counteracting the generalized aging decline and the related mitochondrial involvement.
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Affiliation(s)
- Guglielmina Chimienti
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (G.C.); (F.F.); (V.P.)
| | - Anna Picca
- Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, L.go F. Vito 8, 00168 Rome, Italy;
- Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, 11330 Stockholm, Sweden
| | - Flavio Fracasso
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (G.C.); (F.F.); (V.P.)
| | - Francesco Russo
- Laboratory of Nutritional Pathophysiology, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (F.R.); (A.O.); (G.R.)
| | - Antonella Orlando
- Laboratory of Nutritional Pathophysiology, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (F.R.); (A.O.); (G.R.)
| | - Giuseppe Riezzo
- Laboratory of Nutritional Pathophysiology, National Institute of Gastroenterology “S. de Bellis”, Research Hospital, 70013 Castellana Grotte, Italy; (F.R.); (A.O.); (G.R.)
| | - Christiaan Leeuwenburgh
- Department of Aging and Geriatric Research, Institute on Aging, Division of Biology of Aging, University of Florida, Gainesville, FL 32611, USA;
| | - Vito Pesce
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (G.C.); (F.F.); (V.P.)
| | - Angela Maria Serena Lezza
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Via Orabona 4, 70125 Bari, Italy; (G.C.); (F.F.); (V.P.)
- Correspondence: ; Tel.: +39-080-5443309
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Rottenberg H, Hoek JB. The Mitochondrial Permeability Transition: Nexus of Aging, Disease and Longevity. Cells 2021; 10:cells10010079. [PMID: 33418876 PMCID: PMC7825081 DOI: 10.3390/cells10010079] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/23/2020] [Accepted: 01/01/2021] [Indexed: 12/11/2022] Open
Abstract
The activity of the mitochondrial permeability transition pore, mPTP, a highly regulated multi-component mega-channel, is enhanced in aging and in aging-driven degenerative diseases. mPTP activity accelerates aging by releasing large amounts of cell-damaging reactive oxygen species, Ca2+ and NAD+. The various pathways that control the channel activity, directly or indirectly, can therefore either inhibit or accelerate aging or retard or enhance the progression of aging-driven degenerative diseases and determine lifespan and healthspan. Autophagy, a catabolic process that removes and digests damaged proteins and organelles, protects the cell against aging and disease. However, the protective effect of autophagy depends on mTORC2/SKG1 inhibition of mPTP. Autophagy is inhibited in aging cells. Mitophagy, a specialized form of autophagy, which retards aging by removing mitochondrial fragments with activated mPTP, is also inhibited in aging cells, and this inhibition leads to increased mPTP activation, which is a major contributor to neurodegenerative diseases, such as Alzheimer's and Parkinson's diseases. The increased activity of mPTP in aging turns autophagy/mitophagy into a destructive process leading to cell aging and death. Several drugs and lifestyle modifications that enhance healthspan and lifespan enhance autophagy and inhibit the activation of mPTP. Therefore, elucidating the intricate connections between pathways that activate and inhibit mPTP, in the context of aging and degenerative diseases, could enhance the discovery of new drugs and lifestyle modifications that slow aging and degenerative disease.
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Affiliation(s)
- Hagai Rottenberg
- New Hope Biomedical R&D, 23 W. Bridge street, New Hope, PA 18938, USA
- Correspondence: ; Tel.: +1-267-614-5588
| | - Jan B. Hoek
- MitoCare Center, Department of Anatomy, Pathology and Cell Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA;
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Warren JL, Hunter GR, Gower BA, Bamman MM, Windham ST, Moellering DR, Fisher G. Exercise Effects on Mitochondrial Function and Lipid Metabolism during Energy Balance. Med Sci Sports Exerc 2020; 52:827-834. [PMID: 31652245 DOI: 10.1249/mss.0000000000002190] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION/PURPOSE Aerobic exercise training (AET) has been shown to improve mitochondrial bioenergetics and upregulate proteins related to lipid metabolism. However, it remains to be determined if these alterations associated with AET persist when measured in energy balance (EB) in the days after the last bout of training. The purpose of the study was to test the hypothesis that improvements in skeletal muscle mitochondrial function induced by AET observed in previous literature would persist when measured after restoring EB conditions 72 h removed from the last exercise bout. METHODS Participants were 14 premenopausal women (age = 31.2 ± 6.7 yr, BMI = 26.6 ± 5.1 kg·m). The AET program required three monitored training sessions per week for 8-16 wk. Skeletal muscle biopsies were obtained at baseline and after 8-16 wk of AET (≥72 h after the last exercise bout). All food was provided for 72 h before biopsies, and EB was managed 24 h before testing within ±100 kcal of measured energy requirements using a whole-room calorimeter. Mitochondrial oxidative capacity was quantified in permeabilized muscle fibers from the vastus lateralis. RESULTS We found that AET increased coupled respiration (154%) and uncoupled respiration (90%) rates using a fatty acid substrate (palmitoyl carnitine) (P < 0.05). However, when rates were normalized to complex IV activity (a marker of mitochondrial content), no significant differences were observed. In addition, there were no changes in proteins known to mediate mitochondrial biogenesis or lipid transport and metabolism after AET. CONCLUSION Eight to 16 wk of AET improved mitochondrial capacity under fatty acid substrate when assessed in EB, which appears to be due to mitochondrial biogenesis.
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Affiliation(s)
- Jonathan L Warren
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL
| | - Gary R Hunter
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL
| | - Barbara A Gower
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL
| | - Marcas M Bamman
- Department of Cell Development and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL
| | - Samuel T Windham
- Department of Surgery, University of Alabama at Birmingham, Birmingham, AL
| | - Douglas R Moellering
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL
| | - Gordon Fisher
- Department of Human Studies, University of Alabama at Birmingham, Birmingham, AL
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Pignatti C, D’Adamo S, Stefanelli C, Flamigni F, Cetrullo S. Nutrients and Pathways that Regulate Health Span and Life Span. Geriatrics (Basel) 2020; 5:geriatrics5040095. [PMID: 33228041 PMCID: PMC7709628 DOI: 10.3390/geriatrics5040095] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/10/2020] [Accepted: 11/17/2020] [Indexed: 02/07/2023] Open
Abstract
Both life span and health span are influenced by genetic, environmental and lifestyle factors. With the genetic influence on human life span estimated to be about 20–25%, epigenetic changes play an important role in modulating individual health status and aging. Thus, a main part of life expectance and healthy aging is determined by dietary habits and nutritional factors. Excessive or restricted food consumption have direct effects on health status. Moreover, some dietary interventions including a reduced intake of dietary calories without malnutrition, or a restriction of specific dietary component may promote health benefits and decrease the incidence of aging-related comorbidities, thus representing intriguing potential approaches to improve healthy aging. However, the relationship between nutrition, health and aging is still not fully understood as well as the mechanisms by which nutrients and nutritional status may affect health span and longevity in model organisms. The broad effect of different nutritional conditions on health span and longevity occurs through multiple mechanisms that involve evolutionary conserved nutrient-sensing pathways in tissues and organs. These pathways interacting each other include the evolutionary conserved key regulators mammalian target of rapamycin, AMP-activated protein kinase, insulin/insulin-like growth factor 1 pathway and sirtuins. In this review we provide a summary of the main molecular mechanisms by which different nutritional conditions, i.e., specific nutrient abundance or restriction, may affect health span and life span.
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Affiliation(s)
- Carla Pignatti
- Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, 40126 Bologna, Italy; (C.P.); (F.F.)
| | - Stefania D’Adamo
- Department of Medical and Surgical Sciences, Alma Mater Studiorum, University of Bologna, 40136 Bologna, Italy;
- Laboratory of Immunorheumatology and Tissue Regeneration, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Claudio Stefanelli
- Department for Life Quality Studies, Alma Mater Studiorum, University of Bologna, 47921 Rimini, Italy;
| | - Flavio Flamigni
- Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, 40126 Bologna, Italy; (C.P.); (F.F.)
| | - Silvia Cetrullo
- Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, 40126 Bologna, Italy; (C.P.); (F.F.)
- Correspondence: ; Tel.: +39-051-209-1241
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Arora S, Ligoxygakis P. Beyond Host Defense: Deregulation of Drosophila Immunity and Age-Dependent Neurodegeneration. Front Immunol 2020; 11:1574. [PMID: 32774336 PMCID: PMC7387716 DOI: 10.3389/fimmu.2020.01574] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 06/15/2020] [Indexed: 12/12/2022] Open
Abstract
Age-dependent neurodegenerative disorders are a set of diseases that affect millions of individuals worldwide. Apart from a small subset that are the result of well-defined inherited autosomal dominant gene mutations (e.g., those encoding the β-amyloid precursor protein and presenilins), our understanding of the genetic network that underscores their pathology, remains scarce. Genome-wide association studies (GWAS) especially in Alzheimer's disease patients and research in Parkinson's disease have implicated inflammation and the innate immune response as risk factors. However, even if GWAS etiology points toward innate immunity, untangling cause, and consequence is a challenging task. Specifically, it is not clear whether predisposition to de-regulated immunity causes an inadequate response to protein aggregation (such as amyloid or α-synuclein) or is the direct cause of this aggregation. Given the evolutionary conservation of the innate immune response in Drosophila and humans, unraveling whether hyperactive immune response in glia have a protective or pathological role in the brain could be a potential strategy in combating age-related neurological diseases.
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Affiliation(s)
- Srishti Arora
- Laboratory of Cell Biology, Development and Genetics, Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Petros Ligoxygakis
- Laboratory of Cell Biology, Development and Genetics, Department of Biochemistry, University of Oxford, Oxford, United Kingdom
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32
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Mohammad K, Baratang Junio JA, Tafakori T, Orfanos E, Titorenko VI. Mechanisms that Link Chronological Aging to Cellular Quiescence in Budding Yeast. Int J Mol Sci 2020; 21:ijms21134717. [PMID: 32630624 PMCID: PMC7369985 DOI: 10.3390/ijms21134717] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/27/2020] [Accepted: 06/30/2020] [Indexed: 12/28/2022] Open
Abstract
After Saccharomyces cerevisiae cells cultured in a medium with glucose consume glucose, the sub-populations of quiescent and non-quiescent cells develop in the budding yeast culture. An age-related chronology of quiescent and non-quiescent yeast cells within this culture is discussed here. We also describe various hallmarks of quiescent and non-quiescent yeast cells. A complex aging-associated program underlies cellular quiescence in budding yeast. This quiescence program includes a cascade of consecutive cellular events orchestrated by an intricate signaling network. We examine here how caloric restriction, a low-calorie diet that extends lifespan and healthspan in yeast and other eukaryotes, influences the cellular quiescence program in S. cerevisiae. One of the main objectives of this review is to stimulate an exploration of the mechanisms that link cellular quiescence to chronological aging of budding yeast. Yeast chronological aging is defined by the length of time during which a yeast cell remains viable after its growth and division are arrested, and it becomes quiescent. We propose a hypothesis on how caloric restriction can slow chronological aging of S. cerevisiae by altering the chronology and properties of quiescent cells. Our hypothesis posits that caloric restriction delays yeast chronological aging by targeting four different processes within quiescent cells.
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Rojas-Morales P, León-Contreras JC, Granados-Pineda J, Hernández-Pando R, Gonzaga G, Sánchez-Lozada LG, Osorio-Alonso H, Pedraza-Chaverri J, Tapia E. Protection against renal ischemia and reperfusion injury by short-term time-restricted feeding involves the mitochondrial unfolded protein response. Free Radic Biol Med 2020; 154:75-83. [PMID: 32376457 DOI: 10.1016/j.freeradbiomed.2020.04.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 04/15/2020] [Accepted: 04/26/2020] [Indexed: 12/18/2022]
Abstract
Food restriction improves metabolic health and increases resistance to stress in experimental animals. However, most studies have focused on long-term dietary restriction protocols consisting of several weeks or months of limited food ingestion. Here it was investigated the impact of 2-h time-restricted feeding (TRF) for one week on stress resistance in a rat model of kidney injury induced by ischemia and reperfusion (IR). At baseline, TRF reduced blood glucose, increased β-hydroxybutyrate and improved body composition in male Wistar rats. Importantly, implementing the one-week TRF schedule before ischemia significantly improved renal function, suppressed tubular injury, prevented the activation of extracellular signal-regulated kinase 1/2 (ERK1/2) and inhibited the development of interstitial fibrosis. These benefits were related to increased antioxidant protection, reduction in dynamin-related protein 1 (DRP1)-mediated mitochondrial fragmentation and modulation of the mitochondrial unfolded protein response (UPRmt). Specifically, preoperative TRF boosted the activation of the UPRmt in the acute phase after renal IR while promoted its resolution at the stage of fibrosis. Our study indicates that dietary preconditioning by short-term TRF improves the outcome of renal IR injury, and suggests that an optimal intervention that promotes kidney protection may not necessarily require adherence to restrictive diets for prolonged periods of time.
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Affiliation(s)
- Pedro Rojas-Morales
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, 04510, Mexico; Departamento de Fisiopatología Cardio-Renal, Instituto Nacional de Cardiología Ignacio Chavez, Ciudad de México, 14080, Mexico
| | - Juan Carlos León-Contreras
- Departamento de Patología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, 14080, Mexico
| | - Jessica Granados-Pineda
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, 04510, Mexico
| | - Rogelio Hernández-Pando
- Departamento de Patología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, 14080, Mexico
| | - Guillermo Gonzaga
- Departamento de Fisiopatología Cardio-Renal, Instituto Nacional de Cardiología Ignacio Chavez, Ciudad de México, 14080, Mexico
| | - Laura Gabriela Sánchez-Lozada
- Departamento de Fisiopatología Cardio-Renal, Instituto Nacional de Cardiología Ignacio Chavez, Ciudad de México, 14080, Mexico
| | - Horacio Osorio-Alonso
- Departamento de Fisiopatología Cardio-Renal, Instituto Nacional de Cardiología Ignacio Chavez, Ciudad de México, 14080, Mexico
| | - José Pedraza-Chaverri
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, 04510, Mexico
| | - Edilia Tapia
- Departamento de Fisiopatología Cardio-Renal, Instituto Nacional de Cardiología Ignacio Chavez, Ciudad de México, 14080, Mexico.
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Dakik P, Rodriguez MEL, Junio JAB, Mitrofanova D, Medkour Y, Tafakori T, Taifour T, Lutchman V, Samson E, Arlia-Ciommo A, Rukundo B, Simard É, Titorenko VI. Discovery of fifteen new geroprotective plant extracts and identification of cellular processes they affect to prolong the chronological lifespan of budding yeast. Oncotarget 2020; 11:2182-2203. [PMID: 32577164 PMCID: PMC7289529 DOI: 10.18632/oncotarget.27615] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/14/2020] [Indexed: 11/25/2022] Open
Abstract
In a quest for previously unknown geroprotective natural chemicals, we used a robust cell viability assay to search for commercially available plant extracts that can substantially prolong the chronological lifespan of budding yeast. Many of these plant extracts have been used in traditional Chinese and other herbal medicines or the Mediterranean and other customary diets. Our search led to a discovery of fifteen plant extracts that significantly extend the longevity of chronologically aging yeast not limited in calorie supply. We show that each of these longevity-extending plant extracts is a geroprotector that decreases the rate of yeast chronological aging and promotes a hormetic stress response. We also show that each of the fifteen geroprotective plant extracts mimics the longevity-extending, stress-protecting, metabolic and physiological effects of a caloric restriction diet but if added to yeast cultured under non-caloric restriction conditions. We provide evidence that the fifteen geroprotective plant extracts exhibit partially overlapping effects on a distinct set of longevity-defining cellular processes. These effects include a rise in coupled mitochondrial respiration, an altered age-related chronology of changes in reactive oxygen species abundance, protection of cellular macromolecules from oxidative damage, and an age-related increase in the resistance to long-term oxidative and thermal stresses.
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Affiliation(s)
- Pamela Dakik
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | | | | | - Darya Mitrofanova
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Younes Medkour
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Tala Tafakori
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Tarek Taifour
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Vicky Lutchman
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Eugenie Samson
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | | | - Belise Rukundo
- Department of Biology, Concordia University, Montreal, Quebec H4B 1R6, Canada
| | - Éric Simard
- Idunn Technologies Inc., Rosemere, Quebec J7A 4A5, Canada
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Mohamed EA, Sayed WM. Implication of JAK1/STAT3/SOCS3 Pathway in Aging of Cerebellum of Male Rat: Histological and Molecular study. Sci Rep 2020; 10:8840. [PMID: 32483368 PMCID: PMC7264275 DOI: 10.1038/s41598-020-64050-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/22/2020] [Indexed: 01/05/2023] Open
Abstract
Aging causes morphological and functional changes in the cerebellum. This work aimed to demonstrate the implication of JAK1/STAT3/SOCS3 on aging-induced changes of rat cerebellum. Thirty male rats were divided into: adult (12 months), early senile (24 months) and late senile (32 months) groups. Immunohistochemical reaction of the cerebellum to GFAP and caspase-3 was assessed and the expression of JAK1, STAT3, SOCS3 proteins was also evaluated. TNFα as well as the activities of malondialdehyde (MDA) and reduced glutathione (GSH) in cerebellar tissue were also measured. The cerebellum of late senile rats revealed more degenerative changes than early senile rats in the form of increase in GFAP and caspase-3 immunoreaction. Additionally, there was decrease in JAK1and STAT3 expression in early and late senile rats and increase in SOCS3 when compare early and late senile groups with adult one. Enhancement of TNFα was noticed with aging as well as significant decrease in GSH and increase in MDA in early senile group. Moreover, late senile group revealed significant decrease in GSH and increase in MDA. It could be concluded that aging resulting in variable changes of the cerebellum as detected by morphological changes, immunohistochemical reactions of caspase-3 and GFAP and expression of JAK1/STAT3/SOCS3 proteins. Additionally, inflammatory marker TNFα and the activity of oxidative/antioxidative stress markers; malondialdehyde (MDA) and reduced glutathione (GSH) were also affected with aging.
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Affiliation(s)
- Enas Ahmed Mohamed
- Department of Anatomy, College of Medicine, Qassim University, Meleda, Buraydah, Saudi Arabia
- Department of Anatomy and Embryology, Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt
| | - Walaa Mohamed Sayed
- Department of Anatomy and Embryology, Faculty of Medicine, Kasr Al-Ainy, Cairo University, Cairo, Egypt.
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Functional changes induced by caloric restriction in cardiac and skeletal muscle mitochondria. J Bioenerg Biomembr 2020; 52:269-277. [PMID: 32462240 DOI: 10.1007/s10863-020-09838-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/22/2020] [Indexed: 12/19/2022]
Abstract
Caloric restriction (CR) is widely known to increase life span and resistance to different types of injuries in several organisms. We have previously shown that mitochondria from livers or brains of CR animals exhibit higher calcium uptake rates and lower sensitivity to calcium-induced mitochondrial permeability transition (mPT), an event related to the resilient phenotype exhibited by these organs. Given the importance of calcium in metabolic control and cell homeostasis, we aimed here to uncover possible changes in mitochondrial calcium handling, redox balance and bioenergetics in cardiac and skeletal muscle mitochondria in response to six months of CR. Unexpectedly, we found that CR does not alter the susceptibility to mPT in muscle (cardiac or skeletal), nor calcium uptake rates. Despite the lack in changes in calcium transport properties, CR consistently decreased respiration in the presence of ATP synthesis in heart and soleus muscle. In heart, such changes were accompanied by a decrease in respiration in the absence of ATP synthesis, lower maximal respiratory rates and a reduced rate of hydrogen peroxide release. Hydrogen peroxide release was unaltered by CR in skeletal muscle. No changes were observed in inner membrane potentials and respiratory control ratios. Together, these results highlight the tissue-specific bioenergetic and ion transport effects induced by CR, demonstrating that resilience against calcium-induced mPT is not present in all tissues.
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Martínez Corrales G, Alic N. Evolutionary Conservation of Transcription Factors Affecting Longevity. Trends Genet 2020; 36:373-382. [PMID: 32294417 DOI: 10.1016/j.tig.2020.02.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/12/2020] [Accepted: 02/18/2020] [Indexed: 12/29/2022]
Abstract
The increasing number of older people is resulting in an increased prevalence of age-related diseases. Research has shown that the ageing process itself is a potential point of intervention. Indeed, gene expression can be optimised for health in older ages through manipulation of transcription factor (TF) activity. This review is focused on the ever-growing number of TFs whose effects on ageing are evolutionarily conserved. These regulate a plethora of functions, including stress resistance, metabolism, and growth. They are engaged in complex interactions within and between different cell types, impacting the physiology of the entire organism. Since ageing is not programmed, the conservation of their effects on lifespan is most likely a reflection of the conservation of their functions in youth.
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Schöller-Mann A, Matt K, Schniertshauer D, Hochecker B, Bergemann J. 12 days of in vivo caloric reduction can improve important parameters of aging in humans. Mech Ageing Dev 2020; 188:111238. [PMID: 32272119 DOI: 10.1016/j.mad.2020.111238] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 03/13/2020] [Accepted: 03/26/2020] [Indexed: 01/16/2023]
Abstract
Caloric reduction (CR) is considered as the most reasonable intervention to delay aging and age-related diseases. Numerous studies in various model organisms provide the main basis for this hypothesis. Human studies exist, but they differ widely in study design, characteristics of test persons and study outcome. In this study we investigated CR in humans on a molecular level to gain a better understanding in these processes. For that purpose, we analyzed human peripheral blood mononuclear cells of healthy people fasting according to F.X. Mayr. In a previous study our group could show a significantly improved DNA repair capacity after fasting. Here we were able to confirm these findings despite a slightly modified fasting therapy. Furthermore, the function of the mitochondrial respiratory chain and the mRNA levels of the mitochondria-associated genes SIRT3 and NDUFS1 were significantly affected by CR. However, these changes were only detectable in people who exhibited no improvement in DNA repair capacity. In contrast to that we could not observe any changes in ROS levels, mitochondrial DNA copy number and non-mitochondrial respiration. Altogether our results reveal that CR in form of F. X. Mayr therapy is able to positively influence several cellular parameters and especially mitochondrial function.
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Affiliation(s)
- Alica Schöller-Mann
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany.
| | - Katja Matt
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany
| | - Daniel Schniertshauer
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany
| | - Barbara Hochecker
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany
| | - Jörg Bergemann
- Department of Life Sciences, Albstadt-Sigmaringen University of Applied Sciences, Sigmaringen, Germany
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Makrecka‐Kuka M, Liepinsh E, Murray AJ, Lemieux H, Dambrova M, Tepp K, Puurand M, Käämbre T, Han WH, Goede P, O'Brien KA, Turan B, Tuncay E, Olgar Y, Rolo AP, Palmeira CM, Boardman NT, Wüst RCI, Larsen TS. Altered mitochondrial metabolism in the insulin-resistant heart. Acta Physiol (Oxf) 2020; 228:e13430. [PMID: 31840389 DOI: 10.1111/apha.13430] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 12/12/2022]
Abstract
Obesity-induced insulin resistance and type 2 diabetes mellitus can ultimately result in various complications, including diabetic cardiomyopathy. In this case, cardiac dysfunction is characterized by metabolic disturbances such as impaired glucose oxidation and an increased reliance on fatty acid (FA) oxidation. Mitochondrial dysfunction has often been associated with the altered metabolic function in the diabetic heart, and may result from FA-induced lipotoxicity and uncoupling of oxidative phosphorylation. In this review, we address the metabolic changes in the diabetic heart, focusing on the loss of metabolic flexibility and cardiac mitochondrial function. We consider the alterations observed in mitochondrial substrate utilization, bioenergetics and dynamics, and highlight new areas of research which may improve our understanding of the cause and effect of cardiac mitochondrial dysfunction in diabetes. Finally, we explore how lifestyle (nutrition and exercise) and pharmacological interventions can prevent and treat metabolic and mitochondrial dysfunction in diabetes.
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Affiliation(s)
| | | | - Andrew J. Murray
- Department of Physiology, Development and Neuroscience University of Cambridge Cambridge UK
| | - Hélène Lemieux
- Department of Medicine Faculty Saint‐Jean, Women and Children's Health Research Institute University of Alberta Edmonton AB Canada
| | | | - Kersti Tepp
- National Institute of Chemical Physics and Biophysics Tallinn Estonia
| | - Marju Puurand
- National Institute of Chemical Physics and Biophysics Tallinn Estonia
| | - Tuuli Käämbre
- National Institute of Chemical Physics and Biophysics Tallinn Estonia
| | - Woo H. Han
- Faculty Saint‐Jean University of Alberta Edmonton AB Canada
| | - Paul Goede
- Laboratory of Endocrinology Amsterdam Gastroenterology & Metabolism Amsterdam University Medical Center University of Amsterdam Amsterdam The Netherlands
| | - Katie A. O'Brien
- Department of Physiology, Development and Neuroscience University of Cambridge Cambridge UK
| | - Belma Turan
- Laboratory of Endocrinology Amsterdam Gastroenterology & Metabolism Amsterdam University Medical Center University of Amsterdam Amsterdam The Netherlands
| | - Erkan Tuncay
- Department of Biophysics Faculty of Medicine Ankara University Ankara Turkey
| | - Yusuf Olgar
- Department of Biophysics Faculty of Medicine Ankara University Ankara Turkey
| | - Anabela P. Rolo
- Department of Life Sciences University of Coimbra and Center for Neurosciences and Cell Biology University of Coimbra Coimbra Portugal
| | - Carlos M. Palmeira
- Department of Life Sciences University of Coimbra and Center for Neurosciences and Cell Biology University of Coimbra Coimbra Portugal
| | - Neoma T. Boardman
- Cardiovascular Research Group Department of Medical Biology UiT the Arctic University of Norway Tromso Norway
| | - Rob C. I. Wüst
- Laboratory for Myology Department of Human Movement Sciences Faculty of Behavioural and Movement Sciences Amsterdam Movement Sciences Vrije Universiteit Amsterdam Amsterdam The Netherlands
| | - Terje S. Larsen
- Cardiovascular Research Group Department of Medical Biology UiT the Arctic University of Norway Tromso Norway
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Schneider J, Han WH, Matthew R, Sauvé Y, Lemieux H. Age and sex as confounding factors in the relationship between cardiac mitochondrial function and type 2 diabetes in the Nile Grass rat. PLoS One 2020; 15:e0228710. [PMID: 32084168 PMCID: PMC7034865 DOI: 10.1371/journal.pone.0228710] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 01/21/2020] [Indexed: 12/14/2022] Open
Abstract
Our study revisits the role of cardiac mitochondrial adjustments during the progression of type 2 diabetes mellitus (T2DM), while considering age and sex as potential confounding factors. We used the Nile Grass rats (NRs) as the animal model. After weaning, animals were fed either a Standard Rodent Chow Diet (SRCD group) or a Mazuri Chinchilla Diet (MCD group) consisting of high-fiber and low-fat content. Both males and females in the SRCD group, exhibited increased body mass, body mass index, and plasma insulin compared to the MCD group animals. However, the females were able to preserve their fasting blood glucose throughout the age range on both diets, while the males showed significant hyperglycemia starting at 6 months in the SRCD group. In the males, a higher citrate synthase activity-a marker of mitochondrial content-was measured at 2 months in the SRCD compared to the MCD group, and this was followed by a decline with age in the SRCD group only. In contrast, females preserved their mitochondrial content throughout the age range. In the males exclusively, the complex IV capacity expressed independently of mitochondrial content varied with age in a diet-specific pattern; the capacity was elevated at 2 months in the SRCD group, and at 6 months in the MCD group. In addition, females, but not males, were able to adjust their capacity to oxidize long-chain fatty acid in accordance with the fat content of the diet. Our results show clear sexual dimorphism in the variation of mitochondrial content and oxidative phosphorylation capacity with diet and age. The SRCD not only leads to T2DM but also exacerbates age-related cardiac mitochondrial defects. These observations, specific to male NRs, might reflect deleterious dietary-induced changes on their metabolism making them more prone to the cardiovascular consequences of aging and T2DM.
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Affiliation(s)
- Jillian Schneider
- Faculty Saint-Jean, University of Alberta, Edmonton, Alberta, Canada
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada
| | - Woo Hyun Han
- Faculty Saint-Jean, University of Alberta, Edmonton, Alberta, Canada
- Department of Ophthalmology and Visual Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Rebecca Matthew
- Faculty Saint-Jean, University of Alberta, Edmonton, Alberta, Canada
| | - Yves Sauvé
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada
- Department of Ophthalmology and Visual Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Hélène Lemieux
- Faculty Saint-Jean, University of Alberta, Edmonton, Alberta, Canada
- Department of Medicine, Women and Children's Health Research Institute, University of Alberta, Edmonton, Alberta, Canada
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D’Aquila P, De Rango F, Guarasci F, Mandalà M, Corsonello A, Bellizzi D, Passarino G. Multi-Tissue DNA Methylation Remodeling at Mitochondrial Quality Control Genes According to Diet in Rat Aging Models. Nutrients 2020; 12:nu12020460. [PMID: 32059421 PMCID: PMC7071227 DOI: 10.3390/nu12020460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/06/2020] [Accepted: 02/08/2020] [Indexed: 12/20/2022] Open
Abstract
An adequate mitochondrial quality control system ensures the maintenance of a healthy mitochondrial pool so as to slow down the progressive accumulation of damage affecting mitochondrial function during aging and diseases. The amount and quality of nutrients availability were demonstrated to induce a process of bioenergetics adaptation by influencing the above system via epigenetic modifications. Here, we analyzed DNA samples from differently-aged rats fed a standard or low-calorie diet to evaluate tissue-specific changes in DNA methylation of CpG sites falling within Polg, Polg2, Tfam, Fis1, and Opa1 genes. We found significant changes according to age and tissue type and the administration of the low-calorie diet is responsible for a prevalent increase in DNA methylation levels. Particularly, this increase was more appreciable when this diet was administered during adulthood and at old age. Regression analysis demonstrated that DNA methylation patterns of the analyzed genes were negatively correlated with their expression levels. Data we obtained provide the first evidence about changes in DNA methylation patterns of genes involved in the mitochondrial biogenesis in response to specific diets and demonstrated that epigenetic modifications are involved in the modulation of mitochondrial dynamics driven by age and nutrition.
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Affiliation(s)
- Patrizia D’Aquila
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, Italy; (M.M.); (D.B.); (G.P.)
- Correspondence: (P.D.); (F.D.R.); Tel.: +39-0984492934 (P.D.); +39-0984492933 (F.D.R.)
| | - Francesco De Rango
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, Italy; (M.M.); (D.B.); (G.P.)
- Correspondence: (P.D.); (F.D.R.); Tel.: +39-0984492934 (P.D.); +39-0984492933 (F.D.R.)
| | - Francesco Guarasci
- Italian National Research Center on Aging, 87100 Cosenza, Italy; (F.G.); (A.C.)
| | - Maurizio Mandalà
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, Italy; (M.M.); (D.B.); (G.P.)
| | - Andrea Corsonello
- Italian National Research Center on Aging, 87100 Cosenza, Italy; (F.G.); (A.C.)
| | - Dina Bellizzi
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, Italy; (M.M.); (D.B.); (G.P.)
| | - Giuseppe Passarino
- Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036 Rende, Italy; (M.M.); (D.B.); (G.P.)
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Rudzińska M, Parodi A, Balakireva AV, Chepikova OE, Venanzi FM, Zamyatnin AA. Cellular Aging Characteristics and Their Association with Age-Related Disorders. Antioxidants (Basel) 2020; 9:antiox9020094. [PMID: 31979201 PMCID: PMC7071036 DOI: 10.3390/antiox9020094] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/12/2020] [Accepted: 01/21/2020] [Indexed: 02/06/2023] Open
Abstract
Different molecular signaling pathways, biological processes, and intercellular communication mechanisms control longevity and are affected during cellular senescence. Recent data have suggested that organelle communication, as well as genomic and metabolic dysfunctions, contribute to this phenomenon. Oxidative stress plays a critical role by inducing structural modifications to biological molecules while affecting their function and catabolism and eventually contributing to the onset of age-related dysfunctions. In this scenario, proteins are not adequately degraded and accumulate in the cell cytoplasm as toxic aggregates, increasing cell senescence progression. In particular, carbonylation, defined as a chemical reaction that covalently and irreversibly modifies proteins with carbonyl groups, is considered to be a significant indicator of protein oxidative stress and aging. Here, we emphasize the role and dysregulation of the molecular pathways controlling cell metabolism and proteostasis, the complexity of the mechanisms that occur during aging, and their association with various age-related disorders. The last segment of the review details current knowledge on protein carbonylation as a biomarker of cellular senescence in the development of diagnostics and therapeutics for age-related dysfunctions.
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Affiliation(s)
- Magdalena Rudzińska
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.R.); (A.P.); (A.V.B.); (O.E.C.); (F.M.V.)
| | - Alessandro Parodi
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.R.); (A.P.); (A.V.B.); (O.E.C.); (F.M.V.)
| | - Anastasia V. Balakireva
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.R.); (A.P.); (A.V.B.); (O.E.C.); (F.M.V.)
| | - Olga E. Chepikova
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.R.); (A.P.); (A.V.B.); (O.E.C.); (F.M.V.)
| | - Franco M. Venanzi
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.R.); (A.P.); (A.V.B.); (O.E.C.); (F.M.V.)
| | - Andrey A. Zamyatnin
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia; (M.R.); (A.P.); (A.V.B.); (O.E.C.); (F.M.V.)
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
- Correspondence: ; Tel.: +74956229843
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Zheng Q, Huang J, Wang G. Mitochondria, Telomeres and Telomerase Subunits. Front Cell Dev Biol 2019; 7:274. [PMID: 31781563 PMCID: PMC6851022 DOI: 10.3389/fcell.2019.00274] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/24/2019] [Indexed: 12/11/2022] Open
Abstract
Mitochondrial functions and telomere functions have mostly been studied independently. In recent years, it, however, has become clear that there are intimate links between mitochondria, telomeres, and telomerase subunits. Mitochondrial dysfunctions cause telomere attrition, while telomere damage leads to reprogramming of mitochondrial biosynthesis and mitochondrial dysfunctions, which has important implications in aging and diseases. In addition, evidence has accumulated that telomere-independent functions of telomerase also exist and that the protein component of telomerase TERT shuttles between the nucleus and mitochondria under oxidative stress. Our previously published data show that the RNA component of telomerase TERC is also imported into mitochondria, processed, and exported back to the cytosol. These data show a complex regulation network where telomeres, nuclear genome, and mitochondria are co-regulated by multi-localization and multi-function proteins and RNAs. This review summarizes the connections between mitochondria and telomeres, the mitochondrion-related functions of telomerase subunits, and how they play a role in crosstalk between mitochondria and the nucleus.
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Affiliation(s)
- Qian Zheng
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Jinliang Huang
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Geng Wang
- School of Life Sciences, Tsinghua University, Beijing, China.,School of Life Sciences, Xiamen University, Xiamen, China
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Stone V, Maciel August P, Scortegagna Crestani M, Brum Saccomori A, Magro BM, Moura Maurmann R, Santos BG, Peres Klein C, Matté C. Adaptive effects of gestational caloric restriction in the mitochondria of Wistar rats' brain: A DOHaD approach. Int J Dev Neurosci 2019; 79:1-10. [DOI: 10.1016/j.ijdevneu.2019.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/14/2019] [Accepted: 09/23/2019] [Indexed: 12/13/2022] Open
Affiliation(s)
- Vinícius Stone
- Programa de Pós‐graduação em Ciências Biológicas: BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - Pauline Maciel August
- Programa de Pós‐graduação em Ciências Biológicas: BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - Mariana Scortegagna Crestani
- Departamento de BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - André Brum Saccomori
- Departamento de BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - Bárbara Mariño Magro
- Departamento de BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - Rafael Moura Maurmann
- Departamento de BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - Bernardo Gindri Santos
- Programa de Pós‐graduação em Ciências Biológicas: BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - Caroline Peres Klein
- Programa de Pós‐graduação em Ciências Biológicas: BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
| | - Cristiane Matté
- Programa de Pós‐graduação em Ciências Biológicas: BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
- Departamento de BioquímicaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Ramiro Barcelos2600‐Anexo (laboratório 23)CEP 90035‐003Porto AlegreRSBrazil
- Programa de Pós‐graduação em Ciências Biológicas: FisiologiaInstituto de Ciências Básicas da SaúdeUniversidade Federal do Rio Grande do SulRua Sarmento Leite, 500CEP 90050‐170Porto AlegreRSBrazil
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Effect of Ethanol-Derived Clove Leaf Extract on the Oxidative Stress Response in Yeast Schizosaccharomyces pombe. Int J Microbiol 2019; 2019:2145378. [PMID: 31485231 PMCID: PMC6710797 DOI: 10.1155/2019/2145378] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 05/02/2019] [Indexed: 12/28/2022] Open
Abstract
Compared to the widely explored antioxidant activity from the clove bud extract, less data are available regarding the potential pharmacological use of clove leaves. Our study aimed to explore the antioxidant activity of clove leaves extract in the cellular level. Thus, we used the yeast Schizosaccharomyces pombe as model organisms. Our data indicate that, following extract treatment (100 ppm), the viability of the stationary phase cells of S. pombe was higher than without extract and that of calorie restriction treatments. 100 ppm extract treatment also increased cell viability against H2O2-induced oxidative stress. Those data indicate that the extract could promote oxidative stress tolerance response in yeast cells, which occurred either during the stationary phase or due to exogenous exposure. Higher dose of extract (500 ppm) showed opposite effects, as cell viability was lower than that without treatment. Analysis toward the mitochondrial activity revealed that the extract did not induce mitochondrial activity unlike the calorie restriction treatment. Based on our data, clove leaf extract promotes oxidative stress tolerance response in the yeast S. pombe, independent to that mitochondrial adaptive ROS signaling which commonly occurs in calorie restriction-induced oxidative stress tolerance response.
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Madkour MI, T El-Serafi A, Jahrami HA, Sherif NM, Hassan RE, Awadallah S, Faris MAIE. Ramadan diurnal intermittent fasting modulates SOD2, TFAM, Nrf2, and sirtuins (SIRT1, SIRT3) gene expressions in subjects with overweight and obesity. Diabetes Res Clin Pract 2019; 155:107801. [PMID: 31356832 DOI: 10.1016/j.diabres.2019.107801] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/23/2019] [Accepted: 07/10/2019] [Indexed: 01/30/2023]
Abstract
AIM A growing body of evidence supports the impact of intermittent fasting on normalizing body metabolism and lowering oxidative stress and inflammation. Mounting evidence confirms that oxidative stress and chronic inflammation trigger the way for the development of metabolic diseases, such as diabetes. This research was conducted to evaluate the impact of Ramadan intermittent fasting (RIF) on the expression of cellular metabolism (SIRT1 and SIRT3) and antioxidant genes (TFAM, SOD2, and Nrf2). METHODS Fifty-six (34 males and 22 females) overweight and obese subjects and six healthy body weight controls were recruited and monitored before and after Ramadan. RESULTS Results showed that the relative gene expressions in obese subjects in comparison to counterpart expressions of controls for the antioxidant genes (TFAM, SOD2, and Nrf2) were significantly increased at the end of Ramadan, with percent increments of 90.5%, 54.1% and 411.5% for the three genes, respectively. However, the metabolism-controlling gene (SIRT3) showed a highly significant (P < 0.001) downregulation accompanied with a trend for reduction in SIRT1 gene at the end of Ramadan month, with percent decrements of 61.8% and 10.4%, respectively. Binary regression analysis revealed significant positive correlation (P < 0.05) between high energy intake (>2000 Kcal/day vs. <2000 Kcal/day) and expressions of SOD2 and TFAM (r = 0.84 and r = 0.9, respectively). CONCLUSION Results suggest that RIF ameliorates the genetic expression of antioxidant and anti-inflammatory, and metabolic regulatory genes. Thus, RIF presumably may entail a protective impact against oxidative stress and its adverse metabolic-related derangements in non-diabetic obese patients.
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Affiliation(s)
- Mohamed I Madkour
- Department of Medical Laboratory Sciences, College of Health Sciences/Research Institute of Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates
| | - Ahmed T El-Serafi
- Department of Basic Sciences, College of Medicine/Research Institute of Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates and Medical Biochemistry Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Haitham A Jahrami
- Rehabilitation Services, Periphery Hospitals, Ministry of Health, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Naglaa M Sherif
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Rasha E Hassan
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Samir Awadallah
- Department of Medical Laboratory Sciences, College of Health Sciences/Research Institute of Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates
| | - Mo'ez Al-Islam E Faris
- Department of Clinical Nutrition and Dietetics, College of Health Sciences/Research Institute of Medical and Health Sciences (RIMHS), University of Sharjah, Sharjah, United Arab Emirates.
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Bubier JA, Sutphin GL, Reynolds TJ, Korstanje R, Fuksman-Kumpa A, Baker EJ, Langston MA, Chesler EJ. Integration of heterogeneous functional genomics data in gerontology research to find genes and pathway underlying aging across species. PLoS One 2019; 14:e0214523. [PMID: 30978202 PMCID: PMC6461221 DOI: 10.1371/journal.pone.0214523] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/15/2019] [Indexed: 11/18/2022] Open
Abstract
Understanding the biological mechanisms behind aging, lifespan and healthspan is becoming increasingly important as the proportion of the world's population over the age of 65 grows, along with the cost and complexity of their care. BigData oriented approaches and analysis methods enable current and future bio-gerontologists to synthesize, distill and interpret vast, heterogeneous data from functional genomics studies of aging. GeneWeaver is an analysis system for integration of data that allows investigators to store, search, and analyze immense amounts of data including user-submitted experimental data, data from primary publications, and data in other databases. Aging related genome-wide gene sets from primary publications were curated into this system in concert with data from other model-organism and aging-specific databases, and applied to several questions in genrontology using. For example, we identified Cd63 as a frequently represented gene among aging-related genome-wide results. To evaluate the role of Cd63 in aging, we performed RNAi knockdown of the C. elegans ortholog, tsp-7, demonstrating that this manipulation is capable of extending lifespan. The tools in GeneWeaver enable aging researchers to make new discoveries into the associations between the genes, normal biological processes, and diseases that affect aging, healthspan, and lifespan.
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Affiliation(s)
- Jason A. Bubier
- The Jackson Laboratory, Bar Harbor ME, United States of America
| | - George L. Sutphin
- The University of Arizona, Molecular and Cellular Biology, United States of America
| | | | - Ron Korstanje
- The Jackson Laboratory Nathan Shock Center of Excellence in the Basic Biology of Aging, The Jackson Laboratory, Bar Harbor, ME, United States of America
| | | | | | | | - Elissa J. Chesler
- The Jackson Laboratory, Bar Harbor ME, United States of America
- The Jackson Laboratory Nathan Shock Center of Excellence in the Basic Biology of Aging, The Jackson Laboratory, Bar Harbor, ME, United States of America
- * E-mail:
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Deprez MA, Eskes E, Winderickx J, Wilms T. The TORC1-Sch9 pathway as a crucial mediator of chronological lifespan in the yeast Saccharomyces cerevisiae. FEMS Yeast Res 2019; 18:4980911. [PMID: 29788208 DOI: 10.1093/femsyr/foy048] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 04/19/2018] [Indexed: 12/18/2022] Open
Abstract
The concept of ageing is one that has intrigued mankind since the beginning of time and is now more important than ever as the incidence of age-related disorders is increasing in our ageing population. Over the past decades, extensive research has been performed using various model organisms. As such, it has become apparent that many fundamental aspects of biological ageing are highly conserved across large evolutionary distances. In this review, we illustrate that the unicellular eukaryotic organism Saccharomyces cerevisiae has proven to be a valuable tool to gain fundamental insights into the molecular mechanisms of cellular ageing in multicellular eukaryotes. In addition, we outline the current knowledge on how downregulation of nutrient signaling through the target of rapamycin (TOR)-Sch9 pathway or reducing calorie intake attenuates many detrimental effects associated with ageing and leads to the extension of yeast chronological lifespan. Given that both TOR Complex 1 (TORC1) and Sch9 have mammalian orthologues that have been implicated in various age-related disorders, unraveling the connections of TORC1 and Sch9 with yeast ageing may provide additional clues on how their mammalian orthologues contribute to the mechanisms underpinning human ageing and health.
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Affiliation(s)
- Marie-Anne Deprez
- Department of Biology, Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3001 Heverlee, Belgium
| | - Elja Eskes
- Department of Biology, Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3001 Heverlee, Belgium
| | - Joris Winderickx
- Department of Biology, Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3001 Heverlee, Belgium
| | - Tobias Wilms
- Department of Biology, Functional Biology, KU Leuven, Kasteelpark Arenberg 31, 3001 Heverlee, Belgium
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Dose dependent gene expression is dynamically modulated by the history, physiology and age of yeast cells. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2019; 1862:457-471. [DOI: 10.1016/j.bbagrm.2019.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/21/2019] [Accepted: 02/23/2019] [Indexed: 12/14/2022]
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50
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Ma Y, Moors A, Camougrand N, Dokudovskaya S. The SEACIT complex is involved in the maintenance of vacuole-mitochondria contact sites and controls mitophagy. Cell Mol Life Sci 2019; 76:1623-1640. [PMID: 30673821 PMCID: PMC11105764 DOI: 10.1007/s00018-019-03015-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 12/17/2018] [Accepted: 01/15/2019] [Indexed: 12/19/2022]
Abstract
The major signaling pathway that regulates cell growth and metabolism is under the control of the target of rapamycin complex 1 (TORC1). In Saccharomyces cerevisiae the SEA complex is one of the TORC1 upstream regulators involved in amino acid sensing and autophagy. Here, we performed analysis of the expression, interactions and localization of SEA complex proteins under different conditions, varying parameters such as sugar source, nitrogen availability and growth phase. Our results show that the SEA complex promotes mitochondria degradation either by mitophagy or by general autophagy. In addition, the SEACIT subcomplex is involved in the maintenance of the vacuole-mitochondria contact sites. Thus, the SEA complex appears to be an important link between the TORC1 pathway and regulation of mitochondria quality control.
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Affiliation(s)
- Yinxing Ma
- CNRS, UMR 8126, Université Paris-Sud 11, Institut Gustave Roussy, 114, rue Edouard Vaillant, 94805, Villejuif, France
| | - Alexis Moors
- CNRS, UMR 8126, Université Paris-Sud 11, Institut Gustave Roussy, 114, rue Edouard Vaillant, 94805, Villejuif, France
| | - Nadine Camougrand
- CNRS, IBGC, UMR 5095, 1, rue Camille Saint-Saens, 33000, Bordeaux, France
- Université de Bordeaux, IBGC, 1, rue Camille Saint-Saens, 33000, Bordeaux, France
| | - Svetlana Dokudovskaya
- CNRS, UMR 8126, Université Paris-Sud 11, Institut Gustave Roussy, 114, rue Edouard Vaillant, 94805, Villejuif, France.
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