1
|
Ege T, Tao L, North BJ. The Role of Molecular and Cellular Aging Pathways on Age-Related Hearing Loss. Int J Mol Sci 2024; 25:9705. [PMID: 39273652 DOI: 10.3390/ijms25179705] [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: 07/27/2024] [Revised: 08/27/2024] [Accepted: 09/06/2024] [Indexed: 09/15/2024] Open
Abstract
Aging, a complex process marked by molecular and cellular changes, inevitably influences tissue and organ homeostasis and leads to an increased onset or progression of many chronic diseases and conditions, one of which is age-related hearing loss (ARHL). ARHL, known as presbycusis, is characterized by the gradual and irreversible decline in auditory sensitivity, accompanied by the loss of auditory sensory cells and neurons, and the decline in auditory processing abilities associated with aging. The extended human lifespan achieved by modern medicine simultaneously exposes a rising prevalence of age-related conditions, with ARHL being one of the most significant. While our understanding of the molecular basis for aging has increased over the past three decades, a further understanding of the interrelationship between the key pathways controlling the aging process and the development of ARHL is needed to identify novel targets for the treatment of AHRL. The dysregulation of molecular pathways (AMPK, mTOR, insulin/IGF-1, and sirtuins) and cellular pathways (senescence, autophagy, and oxidative stress) have been shown to contribute to ARHL. However, the mechanistic basis for these pathways in the initiation and progression of ARHL needs to be clarified. Therefore, understanding how longevity pathways are associated with ARHL will directly influence the development of therapeutic strategies to treat or prevent ARHL. This review explores our current understanding of the molecular and cellular mechanisms of aging and hearing loss and their potential to provide new approaches for early diagnosis, prevention, and treatment of ARHL.
Collapse
Affiliation(s)
- Tuba Ege
- Biomedical Sciences Department, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Litao Tao
- Biomedical Sciences Department, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Brian J North
- Biomedical Sciences Department, School of Medicine, Creighton University, Omaha, NE 68178, USA
| |
Collapse
|
2
|
Aglan SA, Awad AM, Elwany YN, Shawky S, Salam RMA, Omar RS, Ghazala RAM, Soliman NA, Khedr MI, Kandil LS, Sultan M, Hamed Y, Kandil NS. BECN1 mRNA expression in breast cancer tissue; significant correlation to tumor grade. Mol Genet Genomics 2024; 299:56. [PMID: 38787424 PMCID: PMC11126480 DOI: 10.1007/s00438-024-02145-2] [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: 08/25/2023] [Accepted: 04/19/2024] [Indexed: 05/25/2024]
Abstract
Breast cancer (BC) is a heterogenous disease with multiple pathways implicated in its development, progression, and drug resistance. Autophagy, a cellular process responsible for self-digestion of damaged organelles, had been recognized as eminent player in cancer progression and chemotherapeutic resistance. The haploinsufficiency of Beclin 1 (BECN1), autophagy protein, is believed to contribute to cancer pathogenesis and progression. In our study, we investigated the expression of BECN1 in a BC female Egyptian patient cohort, as well as its prognostic role through evaluating its association with disease free survival (DFS) after 2 years follow up and association of tumor clinicopathological features. Twenty frozen female BC tissue samples and 17 adjacent normal tissue were included and examined for the expression levels of BECN1. Although the tumor tissues showed lower expression 0.73 (0-8.95) than their corresponding normal tissues 1.02 (0.04-19.59), it was not statistically significant, p: 0.463. BECN1 expression was not associated with stage, nodal metastasis or tumor size, p:0.435, 0.541, 0.296, respectively. However, statistically significant negative correlation was found between grade and BECN1 mRNA expression in the studied cases, p:0.028. BECN1 expression had no statistically significant association with DFS, P = 0.944. However, we observed that triple negative (TNBC) cases had significantly lower DFS rate than luminal BC patients, p: 0.022, with mean DFS 19.0 months, while luminal BC patients had mean DFS of 23.41 months. Our study highlights the potential role of BECN1 in BC pathogenesis, showing that BECN1 expression correlates with poorer differentiation of BC, indicating its probable link with disease aggressiveness. DFS two years follow up showed that TNBC subtype remains associated with less favorable prognosis.
Collapse
Affiliation(s)
- Sarah Ahmed Aglan
- Department of Chemical Pathology, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Ahmed Mostafa Awad
- Department of Chemical Pathology, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Yasmine Nagy Elwany
- Department of Cancer Management and Research, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Sanaa Shawky
- Department of Pathology, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | | | - Rasha Said Omar
- Department of Biochemistry, faculty of medicine, Alexandria University, Alexandria, Egypt
| | | | - Nada Ahmed Soliman
- Department of Biochemistry, faculty of medicine, Alexandria University, Alexandria, Egypt
| | - Marwa Ibrahim Khedr
- Department of Biochemistry, faculty of medicine, Alexandria University, Alexandria, Egypt
| | - Lamia Said Kandil
- School of Pharmacy and Biomedical sciences, University of central Lancashire, Preston, UK
| | - Mohamed Sultan
- Department of Experimental and clinical surgery department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Yasser Hamed
- Department of Experimental and clinical surgery department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Noha Said Kandil
- Department of Chemical Pathology, Medical Research Institute, Alexandria University, Alexandria, Egypt.
| |
Collapse
|
3
|
Grazide MH, Ruidavets JB, Martinet W, Elbaz M, Vindis C. Association of Circulating Autophagy Proteins ATG5 and Beclin 1 with Acute Myocardial Infarction in a Case-Control Study. Cardiology 2024; 149:217-224. [PMID: 38432214 DOI: 10.1159/000537816] [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] [Received: 11/27/2023] [Accepted: 02/09/2024] [Indexed: 03/05/2024]
Abstract
INTRODUCTION Acute myocardial infarction (AMI) is a main contributor of sudden cardiac death worldwide. The discovery of new biomarkers that can improve AMI risk prediction meets a major clinical need for the identification of high-risk patients and the tailoring of medical treatment. Previously, we reported that autophagy a highly conserved catabolic mechanism for intracellular degradation of cellular components is involved in atherosclerotic plaque phenotype and cardiac pathological remodeling. The crucial role of autophagy in the normal and diseased heart has been well described, and its activation functions as a pro-survival process in response to myocardial ischemia. However, autophagy is dysregulated in ischemia/reperfusion injury, thus promoting necrotic or apoptotic cardiac cell death. Very few studies have focused on the plasma levels of autophagy markers in cardiovascular disease patients, even though they could be companion biomarkers of AMI injury. The aims of the present study were to evaluate (1) whether variations in plasma levels of two key autophagy regulators autophagy-related gene 5 (ATG5) and Beclin 1 (the mammalian yeast ortholog Atg6/Vps30) are associated with AMI and (2) their potential for predicting AMI risk. METHODS The case-control study population included AMI patients (n = 100) and control subjects (n = 99) at high cardiovascular risk but without known coronary disease. Plasma levels of ATG5 and Beclin 1 were measured in the whole population study by enzyme-linked immunosorbent assay. RESULTS Multivariate analyses adjusted on common cardiovascular factors and medical treatments, and receiver operating characteristic curves demonstrated that ATG5 and Beclin 1 levels were inversely associated with AMI and provided original biomarkers for AMI risk prediction. CONCLUSION Plasma levels of autophagy regulators ATG5 and Beclin 1 represent relevant candidate biomarkers associated with AMI.
Collapse
Affiliation(s)
- Marie-Hélène Grazide
- Center for Clinical Investigation (CIC1436)/CARDIOMET, Rangueil University Hospital, Toulouse, France
- University of Toulouse III, Toulouse, France
| | | | - Wim Martinet
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
| | - Meyer Elbaz
- Center for Clinical Investigation (CIC1436)/CARDIOMET, Rangueil University Hospital, Toulouse, France
- University of Toulouse III, Toulouse, France
- Department of Cardiology, Rangueil University Hospital, Toulouse, France
| | - Cécile Vindis
- Center for Clinical Investigation (CIC1436)/CARDIOMET, Rangueil University Hospital, Toulouse, France
- University of Toulouse III, Toulouse, France
| |
Collapse
|
4
|
Grazide MH, Ruidavets JB, Martinet W, Elbaz M, Vindis C. Plasma levels of autophagy regulator Rubicon are inversely associated with acute coronary syndrome. Front Cardiovasc Med 2024; 10:1279899. [PMID: 38250026 PMCID: PMC10796531 DOI: 10.3389/fcvm.2023.1279899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/18/2023] [Indexed: 01/23/2024] Open
Abstract
Background The discovery of novel biomarkers that improve current cardiovascular risk prediction models of acute coronary syndrome (ACS) is needed for the identification of very high-risk patients and therapeutic decision-making. Autophagy is a highly conserved catabolic mechanism for intracellular degradation of cellular components through lysosomes. The autophagy process helps maintain cardiac homeostasis and dysregulated autophagy has been described in cardiovascular conditions. Rubicon (Run domain Beclin-1-interacting and cysteine-rich domain-containing protein) is a key regulator of autophagy with a potential role in cardiac stress. Objectives The aims of the present study were to assess whether changes in circulating Rubicon levels are associated with ACS and to evaluate the added value of Rubicon to a clinical predictive risk model. Methods and results The study population included ACS patients (n = 100) and control subjects (n = 99) at high to very high cardiovascular risk but without known coronary event. Plasma Rubicon levels were measured in the whole study population by enzyme-linked immunosorbent assay. Multivariate logistic regression analyses established that Rubicon levels were inversely associated with ACS. A receiver operating characteristic curve analysis demonstrated that the addition of Rubicon improved the predictive performance of the model with an increased area under the curve from 0.868 to 0.896 (p = 0.038). Conclusions Plasma levels of the autophagy regulator Rubicon are associated with ACS and provide added value to classical risk markers for ACS.
Collapse
Affiliation(s)
- Marie-Hélène Grazide
- Center for Clinical Investigation (CIC1436)/CARDIOMET, Rangueil University Hospital, Toulouse, France
- University of Toulouse III, Toulouse, France
| | | | - Wim Martinet
- Laboratory of Physiopharmacology, University of Antwerp, Antwerp, Belgium
| | - Meyer Elbaz
- Center for Clinical Investigation (CIC1436)/CARDIOMET, Rangueil University Hospital, Toulouse, France
- University of Toulouse III, Toulouse, France
- Department of Cardiology, Rangueil University Hospital, Toulouse, France
| | - Cécile Vindis
- Center for Clinical Investigation (CIC1436)/CARDIOMET, Rangueil University Hospital, Toulouse, France
- University of Toulouse III, Toulouse, France
| |
Collapse
|
5
|
Minoretti P, Santiago Sáez A, Liaño Riera M, Gómez Serrano M, García Martín Á. Topically Applied Magnetized Saline Water Improves Skin Biophysical Parameters Through Autophagy Activation: A Pilot Study. Cureus 2023; 15:e49180. [PMID: 38130575 PMCID: PMC10734659 DOI: 10.7759/cureus.49180] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2023] [Indexed: 12/23/2023] Open
Abstract
Background Water exposed to a magnetic field exhibits several changes in its properties, such as increased electrical conductivity, reduced density, and low surface tension. Additionally, it has reduced dissolved oxygen levels and becomes more alkaline. Previous experimental studies have demonstrated that exposure to saline alkaline water leads to a dose-dependent increase in the expression of autophagy-related genes. Here, we hypothesize that the topical application of magnetized alkaline water to the skin can activate autophagy and improve cutaneous biophysical parameters, making it a promising strategy for enhancing skin aesthetics. Methods Two distinct substudies were undertaken. Firstly, a 12-week, uncontrolled, open-label investigation was conducted with 20 females who desired to enhance the appearance of their facial and neck skin. Secondly, a molecular study was carried out on a subset of 10 females to investigate the serum's impact on two autophagy markers (Beclin-1 and mammalian/mechanistic target of rapamycin {mTOR}) in skin biopsies taken from the posterior neck area below the hair attachment line. Results After a period of 12 weeks, the application of the serum resulted in significant improvements in skin hydration within the stratum corneum (56 ± 14 arbitrary units {a.u.}) compared to the baseline measurement (47 ± 12 a.u.; p < 0.001). Moreover, the transepidermal water loss (TEWL) decreased from 14 ± 2 g/m2/hour to 11 ± 3 g/m2/hour (p < 0.001). The results also revealed a notable reduction in sebum content from 38 ± 7 µg/cm2 to 30 ± 4 µg/cm2 after the 12-week period of serum application (<0.001). Additionally, the melanin index (p < 0.01) and erythema index (p < 0.001) were both significantly lower at 12 weeks compared to baseline. The molecular study showed a 38% increase in Beclin-1 levels after 12 weeks of serum application on the posterior neck area, as measured from skin biopsies. In contrast, mTOR levels decreased by 24% from baseline to 12 weeks. Conclusion The application of magnetized saline water topically, within a serum formulation, shows potential in improving skin biophysical parameters for females seeking to enhance the appearance of their facial and neck skin. These beneficial effects are achieved through the activation of cutaneous autophagy, as evidenced by an increase in Beclin-1 expression and a decrease in mTOR content in the skin.
Collapse
Affiliation(s)
| | - Andrés Santiago Sáez
- Legal Medicine, Hospital Clinico San Carlos, Madrid, ESP
- Legal Medicine, Psychiatry, and Pathology, Complutense University of Madrid, Madrid, ESP
| | - Miryam Liaño Riera
- Legal Medicine, Psychiatry, and Pathology, Complutense University of Madrid, Madrid, ESP
| | - Manuel Gómez Serrano
- Legal Medicine, Psychiatry, and Pathology, Complutense University of Madrid, Madrid, ESP
| | - Ángel García Martín
- Legal Medicine, Psychiatry, and Pathology, Complutense University of Madrid, Madrid, ESP
| |
Collapse
|
6
|
Javali PS, Sekar M, Kumar A, Thirumurugan K. Dynamics of redox signaling in aging via autophagy, inflammation, and senescence. Biogerontology 2023; 24:663-678. [PMID: 37195483 DOI: 10.1007/s10522-023-10040-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 05/09/2023] [Indexed: 05/18/2023]
Abstract
Review paper attempts to explain the dynamic aspects of redox signaling in aging through autophagy, inflammation, and senescence. It begins with ROS source in the cell, then states redox signaling in autophagy, and regulation of autophagy in aging. Next, we discuss inflammation and redox signaling with various pathways involved: NOX pathway, ROS production via TNF-α, IL-1β, xanthine oxidase pathway, COX pathway, and myeloperoxidase pathway. Also, we emphasize oxidative damage as an aging marker and the contribution of pathophysiological factors to aging. In senescence-associated secretory phenotypes, we link ROS with senescence, aging disorders. Relevant crosstalk between autophagy, inflammation, and senescence using a balanced ROS level might reduce age-related disorders. Transducing the context-dependent signal communication among these three processes at high spatiotemporal resolution demands other tools like multi-omics aging biomarkers, artificial intelligence, machine learning, and deep learning. The bewildering advancement of technology in the above areas might progress age-related disorders diagnostics with precision and accuracy.
Collapse
Affiliation(s)
- Prashanth S Javali
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Mouliganesh Sekar
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Ashish Kumar
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Kavitha Thirumurugan
- #412J, Structural Biology Lab, Pearl Research Park, School of Biosciences & Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
| |
Collapse
|
7
|
Minoretti P, García Martín Á, Gómez Serrano M, Santiago Sáez A, Liaño Riera M, Emanuele E. Evaluating the Serum Levels of Beclin-1 and Mammalian/Mechanistic Target of Rapamycin (mTOR) in Three Different Professional Categories. Cureus 2023; 15:e45335. [PMID: 37849603 PMCID: PMC10577503 DOI: 10.7759/cureus.45335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2023] [Indexed: 10/19/2023] Open
Abstract
BACKGROUND The possible associations between occupational factors and autophagy - a catabolic process that is evolutionarily conserved and serves as a vital cornerstone in maintaining cellular balance - remain largely unexplored. OBJECTIVES We assessed serum levels of beclin-1, a principal effector of autophagy, and the mammalian/mechanistic target of rapamycin (mTOR), a protein recognized for its part in suppressing autophagy, within a group of healthy individuals hailing from three different professional fields, each characterized by its unique working conditions. METHODS A total of 60 men were recruited from three distinct occupational categories: airline pilots, construction laborers, and fitness trainers. Each group consisted of 20 subjects who were selected during routine occupational health appointments. Serum levels of beclin-1 and mTOR were measured using commercially available immunoassays and compared among the three categories. RESULTS Fitness instructors had the highest concentration of beclin-1 (3.1 ± 0.9 ng/mL). Construction workers followed with a mean of 2.4 ± 0.4 ng/mL, while airline pilots had the lowest levels at 1.9 ± 0.5 ng/mL (one-way analysis of variance, P < 0.001). In terms of mTOR levels, construction workers had the highest concentration (5.9 ± 1.9 ng/mL), followed by airline pilots (4.4 ± 1.7 ng/mL). Fitness instructors, on the other hand, had the lowest mTOR levels (3.5 ± 1.2 ng/mL; one-way analysis of variance, P < 0.001). CONCLUSIONS Serum levels of autophagy biomarkers can vary among healthy individuals based on their professional roles. Considering the crucial function autophagy serves in both health and disease, further investigations are crucial to deepen our comprehension of the potential implications of autophagy in the field of occupational medicine.
Collapse
Affiliation(s)
| | - Ángel García Martín
- Legal Medicine, Psychiatry and Pathology, Complutense University of Madrid, Madrid, ESP
| | - Manuel Gómez Serrano
- Legal Medicine, Psychiatry and Pathology, Complutense University of Madrid, Madrid, ESP
| | - Andrés Santiago Sáez
- Legal Medicine, Hospital Clinico San Carlos, Madrid, ESP
- Legal Medicine, Psychiatry and Pathology, Complutense University of Madrid, Madrid, ESP
| | - Miryam Liaño Riera
- Legal Medicine, Psychiatry and Pathology, Complutense University of Madrid, Madrid, ESP
| | | |
Collapse
|
8
|
Miceli C, Leri M, Stefani M, Bucciantini M. Autophagy-related proteins: Potential diagnostic and prognostic biomarkers of aging-related diseases. Ageing Res Rev 2023; 89:101967. [PMID: 37270146 DOI: 10.1016/j.arr.2023.101967] [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: 03/16/2023] [Revised: 05/19/2023] [Accepted: 05/31/2023] [Indexed: 06/05/2023]
Abstract
Autophagy plays a key role in cellular, tissue and organismal homeostasis and in the production of the energy load needed at critical times during development and in response to nutrient shortage. Autophagy is generally considered as a pro-survival mechanism, although its deregulation has been linked to non-apoptotic cell death. Autophagy efficiency declines with age, thus contributing to many different pathophysiological conditions, such as cancer, cardiomyopathy, diabetes, liver disease, autoimmune diseases, infections, and neurodegeneration. Accordingly, it has been proposed that the maintenance of a proper autophagic activity contributes to the extension of the lifespan in different organisms. A better understanding of the interplay between autophagy and risk of age-related pathologies is important to propose nutritional and life-style habits favouring disease prevention as well as possible clinical applications aimed at promoting long-term health.
Collapse
Affiliation(s)
- Caterina Miceli
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy
| | - Manuela Leri
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Massimo Stefani
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy
| | - Monica Bucciantini
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy.
| |
Collapse
|
9
|
Frankowska N, Bryl E, Fulop T, Witkowski JM. Longevity, Centenarians and Modified Cellular Proteodynamics. Int J Mol Sci 2023; 24:ijms24032888. [PMID: 36769212 PMCID: PMC9918038 DOI: 10.3390/ijms24032888] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
We have shown before that at least one intracellular proteolytic system seems to be at least as abundant in the peripheral blood lymphocytes of centenarians as in the same cells of young individuals (with the cells of the elderly population showing a significant dip compared to both young and centenarian cohorts). Despite scarce published data, in this review, we tried to answer the question how do different types of cells of longevous people-nonagenarians to (semi)supercentenarians-maintain the quality and quantity of their structural and functional proteins? Specifically, we asked if more robust proteodynamics participate in longevity. We hypothesized that at least some factors controlling the maintenance of cellular proteomes in centenarians will remain at the "young" level (just performing better than in the average elderly). In our quest, we considered multiple aspects of cellular protein maintenance (proteodynamics), including the quality of transcribed DNA, its epigenetic changes, fidelity and quantitative features of transcription of both mRNA and noncoding RNAs, the process of translation, posttranslational modifications leading to maturation and functionalization of nascent proteins, and, finally, multiple facets of the process of elimination of misfolded, aggregated, and otherwise dysfunctional proteins (autophagy). We also included the status of mitochondria, especially production of ATP necessary for protein synthesis and maintenance. We found that with the exception of the latter and of chaperone function, practically all of the considered aspects did show better performance in centenarians than in the average elderly, and most of them approached the levels/activities seen in the cells of young individuals.
Collapse
Affiliation(s)
- Natalia Frankowska
- Department of Physiopathology, Medical University of Gdansk, 80-211 Gdansk, Poland
| | - Ewa Bryl
- Department of Pathology and Experimental Rheumatology, Medical University of Gdansk, 80-211 Gdansk, Poland
| | - Tamas Fulop
- Research Center on Aging, Geriatric Division, Department of Medicine, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
| | - Jacek M. Witkowski
- Department of Physiopathology, Medical University of Gdansk, 80-211 Gdansk, Poland
- Correspondence: ; Tel.: +48-58-349-1510
| |
Collapse
|
10
|
Tsitsipatis D, Martindale JL, Ubaida‐Mohien C, Lyashkov A, Yanai H, Kashyap A, Shin CH, Herman AB, Ji E, Yang J, Munk R, Dunn C, Lukyanenko Y, Yang X, Chia CW, Karikkineth AC, Zukley L, D’Agostino J, Kaileh M, Cui C, Beerman I, Ferrucci L, Gorospe M. Proteomes of primary skin fibroblasts from healthy individuals reveal altered cell responses across the life span. Aging Cell 2022; 21:e13609. [PMID: 35429111 PMCID: PMC9124301 DOI: 10.1111/acel.13609] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/24/2022] [Indexed: 02/04/2023] Open
Abstract
Changes in the proteome of different human tissues with advancing age are poorly characterized. Here, we studied the proteins present in primary skin fibroblasts collected from 82 healthy individuals across a wide age spectrum (22-89 years old) who participated in the GESTALT (Genetic and Epigenetic Signatures of Translational Aging Laboratory Testing) study of the National Institute on Aging, NIH. Proteins were extracted from lysed fibroblasts and subjected to liquid chromatography-mass spectrometry analysis, and the expression levels of 9341 proteins were analyzed using linear regression models. We identified key pathways associated with skin fibroblast aging, including autophagy, scavenging of reactive oxygen species (ROS), ribosome biogenesis, DNA replication, and DNA repair. Changes in these prominent pathways were corroborated using molecular and cell culture approaches. Our study establishes a framework of the global proteome governing skin fibroblast aging and points to possible biomarkers and therapeutic targets.
Collapse
Affiliation(s)
- Dimitrios Tsitsipatis
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Jennifer L. Martindale
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Ceereena Ubaida‐Mohien
- Translational Gerontology BranchNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Alexey Lyashkov
- Translational Gerontology BranchNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Hagai Yanai
- Translational Gerontology BranchNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Amogh Kashyap
- Translational Gerontology BranchNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Chang Hoon Shin
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Allison B. Herman
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Eunbyul Ji
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Jen‐Hao Yang
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Rachel Munk
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Christopher Dunn
- Laboratory of Molecular Biology and ImmunologyNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Yevgeniya Lukyanenko
- Translational Gerontology BranchNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Xiaoling Yang
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Chee W. Chia
- Clinical Research CoreNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Ajoy C. Karikkineth
- Clinical Research CoreNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Linda Zukley
- Clinical Research CoreNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Jarod D’Agostino
- Clinical Research CoreNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Mary Kaileh
- Laboratory of Molecular Biology and ImmunologyNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Chang‐Yi Cui
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Isabel Beerman
- Translational Gerontology BranchNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Luigi Ferrucci
- Translational Gerontology BranchNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| | - Myriam Gorospe
- Laboratory of Genetics and GenomicsNational Institute on AgingNational Institutes of Health Intramural Research ProgramBaltimoreMarylandUSA
| |
Collapse
|
11
|
Jin Z, Zhang W, Luo Y, Li X, Qing L, Zuo Q, Fang J, Wu W. Protective effect of Qingre Huoxue decoction against myocardial infarction via PI3K/Akt autophagy pathway based on UPLC-MS, network pharmacology, and in vivo evidence. PHARMACEUTICAL BIOLOGY 2021; 59:1607-1618. [PMID: 34818128 PMCID: PMC8635559 DOI: 10.1080/13880209.2021.2001542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/22/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
CONTEXT Qingre Huoxue (QRHX) decoction, a traditional Chinese medicine, has been widely used to prevent and treat myocardial infarction (MI). OBJECTIVE This study elucidates the possible mechanisms of QRHX in preventing or treating MI in a rat model. MATERIALS AND METHODS The chemical constituents of QRHX were identified by UPLC-MS. Sprague-Dawley rats were randomly divided into the Sham (normal saline), Model (normal saline), QRHX-L, QRHX-M and QRHX-H group (n = 10 per group). QRHX decoction was administered by gavage to the rats for 14 days (5, 10 and 20 g/kg/day). The left anterior descending ligation method was performed to develop MI in Model and QRHX groups, and the same surgical procedures excluding ligation sutures were performed for the sham group. Finally, we evaluated cardiac function, myocardial fibrosis degree, serum inflammatory factors, autophagy levels and verified the signalling pathways in vivo. RESULTS A total of 68 active components of QRHX corresponding to 223 active targets were obtained and 2558 MI-related disease targets were collected. After integration, 123 QRHX anti-MI targets were obtained, and 70 signalling pathways, such as PI3K/Akt, were identified by enrichment analysis. In vivo experiments suggest that QRHX could reduce the degree of myocardial fibrosis, downregulate serum inflammatory factors, and promote autophagy in MI rats. DISCUSSION AND CONCLUSIONS QRHX plays a protective role in the myocardium by mediating PI3K/Akt signalling pathway to activate autophagy and inhibiting inflammatory factor expression. These findings provide a scientific basis for further research and validation of QRHX as a potential therapeutic for MI.
Collapse
Affiliation(s)
- Zheng Jin
- ZhuJiang Hospital, Southern Medical University, Guangzhou, China
| | - Wenbo Zhang
- Research Center of Integrative Medicine, School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuan Luo
- The First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiushen Li
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, China
| | - Lijin Qing
- Department of Cardiovascular, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qiang Zuo
- First Affiliated Hospital, Anhui University of Chinese Medicine, Hefei, China
| | - Junfeng Fang
- Department of Emergency, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wei Wu
- Department of Cardiovascular, First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| |
Collapse
|
12
|
Kaushik S, Tasset I, Arias E, Pampliega O, Wong E, Martinez-Vicente M, Cuervo AM. Autophagy and the hallmarks of aging. Ageing Res Rev 2021; 72:101468. [PMID: 34563704 DOI: 10.1016/j.arr.2021.101468] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/12/2021] [Accepted: 09/20/2021] [Indexed: 12/13/2022]
Abstract
Autophagy, an essential cellular process that mediates degradation of proteins and organelles in lysosomes, has been tightly linked to cellular quality control for its role as part of the proteostasis network. The current interest in identifying the cellular and molecular determinants of aging, has highlighted the important contribution of malfunctioning of autophagy with age to the loss of proteostasis that characterizes all old organisms. However, the diversity of cellular functions of the different types of autophagy and the often reciprocal interactions of autophagy with other determinants of aging, is placing autophagy at the center of the aging process. In this work, we summarize evidence for the contribution of autophagy to health- and lifespan and provide examples of the bidirectional interplay between autophagic pathways and several of the so-called hallmarks of aging. This central role of autophagy in aging, and the dependence on autophagy of many geroprotective interventions, has motivated a search for direct modulators of autophagy that could be used to slow aging and extend healthspan. Here, we review some of those ongoing therapeutic efforts and comment on the potential of targeting autophagy in aging.
Collapse
|
13
|
Liao CY, Kummert OMP, Bair AM, Alavi N, Alavi J, Miller DM, Bagga I, Schempf AM, Hsu YM, Woods Ii BD, Brown Mayfield SM, Mitchell AN, Tannady G, Talbot AR, Dueck AM, Barrera Ovando R, Parker HD, Wang J, Schoeneweis JK, Kennedy BK. The autophagy inducer spermidine protects against metabolic dysfunction during overnutrition. J Gerontol A Biol Sci Med Sci 2021; 76:1714-1725. [PMID: 34060628 DOI: 10.1093/gerona/glab145] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Indexed: 12/16/2022] Open
Abstract
Autophagy, a process catabolizing intracellular components to maintain energy homeostasis, impacts aging and metabolism. Spermidine, a natural polyamine and autophagy activator, extends lifespan across a variety of species, including mice. In addition to protecting cardiac and liver tissue, spermidine also affects adipose tissue through unexplored mechanisms. Here, we examined spermidine in the links between autophagy and systemic metabolism. Consistently, daily injection of spermidine delivered even at late life is sufficient to cause a trend in lifespan extension in wild type mice. We further found that spermidine has minimal metabolic effects in young and old mice under normal nutrition. However, spermidine counteracts HFD (high-fat diet)-induced obesity by increasing lipolysis in visceral fat. Mechanistically, spermidine increases the hepatokine FGF21 expression in liver without reducing food intake. Spermidine also modulates FGF21 in adipose tissues, elevating FGF21 expression in subcutaneous fat, but reducing it in visceral fat. Despite this, FGF21 is not required for spermidine action, since Fgf21 -/- mice were still protected from HFD. Furthermore, the enhanced lipolysis by spermidine was also independent of autophagy in adipose tissue, given that adipose-specific autophagy deficient (Beclin-1 flox/+ Fabp4-cre) mice remained spermidine-responsive under HFD. Our results suggest that the metabolic effects of spermidine occurs through systemic changes in metabolism, involving multiple mechanistic pathways.
Collapse
Affiliation(s)
- Chen-Yu Liao
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | - Amanda M Bair
- Buck Institute for Research on Aging, Novato, CA, USA
| | - Nora Alavi
- Buck Institute for Research on Aging, Novato, CA, USA
| | - Josef Alavi
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | - Isha Bagga
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | - Yueh-Mei Hsu
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | | | | | | | | | - Aaron M Dueck
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | | | - Junying Wang
- Buck Institute for Research on Aging, Novato, CA, USA
| | | | - Brian K Kennedy
- Buck Institute for Research on Aging, Novato, CA, USA.,Healthy Longevity Programme, Yong Loo Lin of Medicine, National University Singapore.,Centre for Healthy Longevity, National University Health System, Singapore.,Singapore Institute for Clinical Sciences, Singapore
| |
Collapse
|
14
|
Raj SD, Fann DY, Wong E, Kennedy BK. Natural products as geroprotectors: An autophagy perspective. Med Res Rev 2021; 41:3118-3155. [PMID: 33973253 DOI: 10.1002/med.21815] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/09/2021] [Accepted: 04/19/2021] [Indexed: 12/19/2022]
Abstract
Over the past decade, significant attention has been given to repurposing Food and Drug Administration approved drugs to treat age-related diseases. In contrast, less consideration has been given to natural bioactive compounds. Consequently, there have been limited attempts to translate these compounds. Autophagy is a fundamental biological pathway linked to aging, and numerous strategies to enhance autophagy have been shown to extend lifespan. Interestingly, there are a number of natural products that are reported to modulate autophagy, and here we describe a number of them that activate autophagy through diverse molecular and cellular mechanisms. Among these, Urolithin A, Spermidine, Resveratrol, Fatty Acids and Phospholipids, Trehalose and Lithium are featured in detail. Finally, we outline possible strategies to optimise and increase the translatability of natural products, with the overall aim of delaying the ageing process and improving human healthspan.
Collapse
Affiliation(s)
- Stephen D Raj
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Centre For Healthy Longevity, National University Health System, National University of Singapore, Singapore
| | - David Y Fann
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Centre For Healthy Longevity, National University Health System, National University of Singapore, Singapore
| | - Esther Wong
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Centre For Healthy Longevity, National University Health System, National University of Singapore, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Brian K Kennedy
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Centre For Healthy Longevity, National University Health System, National University of Singapore, Singapore.,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Agency for Science, Technology and Research (A*STAR), Singapore Institute for Clinical Sciences, Singapore
| |
Collapse
|
15
|
Schneider JL, Rowe JH, Garcia-de-Alba C, Kim CF, Sharpe AH, Haigis MC. The aging lung: Physiology, disease, and immunity. Cell 2021; 184:1990-2019. [PMID: 33811810 PMCID: PMC8052295 DOI: 10.1016/j.cell.2021.03.005] [Citation(s) in RCA: 182] [Impact Index Per Article: 60.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 02/01/2021] [Accepted: 03/02/2021] [Indexed: 02/07/2023]
Abstract
The population is aging at a rate never seen before in human history. As the number of elderly adults grows, it is imperative we expand our understanding of the underpinnings of aging biology. Human lungs are composed of a unique panoply of cell types that face ongoing chemical, mechanical, biological, immunological, and xenobiotic stress over a lifetime. Yet, we do not fully appreciate the mechanistic drivers of lung aging and why age increases the risk of parenchymal lung disease, fatal respiratory infection, and primary lung cancer. Here, we review the molecular and cellular aspects of lung aging, local stress response pathways, and how the aging process predisposes to the pathogenesis of pulmonary disease. We place these insights into context of the COVID-19 pandemic and discuss how innate and adaptive immunity within the lung is altered with age.
Collapse
Affiliation(s)
- Jaime L Schneider
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Dana Farber Cancer Institute, Boston, MA 02115, USA; Massachusetts General Hospital Cancer Center, Boston, MA 02114, USA
| | - Jared H Rowe
- Division of Hematology Boston Children's Hospital and Division of Pediatric Oncology Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Carolina Garcia-de-Alba
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary Medicine, Boston Children's Hospital, Boston, MA 02115, USA
| | - Carla F Kim
- Stem Cell Program and Divisions of Hematology/Oncology and Pulmonary Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Department of Genetics, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA.
| | - Arlene H Sharpe
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Evergrande Center for Immunologic Disease, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA.
| | - Marcia C Haigis
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA.
| |
Collapse
|
16
|
Hu D, Xie F, Xiao Y, Lu C, Zhong J, Huang D, Chen J, Wei J, Jiang Y, Zhong T. Metformin: A Potential Candidate for Targeting Aging Mechanisms. Aging Dis 2021; 12:480-493. [PMID: 33815878 PMCID: PMC7990352 DOI: 10.14336/ad.2020.0702] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/02/2020] [Indexed: 12/13/2022] Open
Abstract
Aging is a universal phenomenon in all biological organisms, defined by the loss of reproductive capacity and a progressive decline in fitness. In humans, aging is further associated with an increased incidence of disease conditions. The current aging population has become a primary public burden of the 21st century. Therefore, to delay the aging process and maintain fitness in the aging population, the discovery of novel anti-aging drugs remains an urgent need. In recent years, metformin, a widely used hypoglycemic drug, has attracted growing attention in the field of anti-aging research. Reportedly, numerous studies have indicated that metformin regulates aging-related pathways, possibly delaying the aging process by modulating these pathways. The elucidation of these anti-aging effects may provide insights into the age-retarding potential of metformin. The present review focuses on the predominant molecular mechanisms associated with aging, as well as the anti-aging effects of metformin.
Collapse
Affiliation(s)
- Die Hu
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China.,2Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Fangfang Xie
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China.,2Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Yongwei Xiao
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China.,2Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Chen Lu
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China
| | - Jianing Zhong
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China.,3Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Gannan Medical University, Ganzhou, China
| | - Defa Huang
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China.,4Precision Medicine Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Jie Chen
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China.,2Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Jifu Wei
- 4Precision Medicine Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Yu Jiang
- 5Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Tianyu Zhong
- 1The First School of Clinical Medicine, Gannan Medical University, Ganzhou, China.,2Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, China.,4Precision Medicine Center, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| |
Collapse
|
17
|
Zimmermann A, Madreiter-Sokolowski C, Stryeck S, Abdellatif M. Targeting the Mitochondria-Proteostasis Axis to Delay Aging. Front Cell Dev Biol 2021; 9:656201. [PMID: 33777963 PMCID: PMC7991595 DOI: 10.3389/fcell.2021.656201] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/22/2021] [Indexed: 01/18/2023] Open
Abstract
Human life expectancy continues to grow globally, and so does the prevalence of age-related chronic diseases, causing a huge medical and economic burden on society. Effective therapeutic options for these disorders are scarce, and even if available, are typically limited to a single comorbidity in a multifaceted dysfunction that inevitably affects all organ systems. Thus, novel therapies that target fundamental processes of aging itself are desperately needed. In this article, we summarize current strategies that successfully delay aging and related diseases by targeting mitochondria and protein homeostasis. In particular, we focus on autophagy, as a fundamental proteostatic process that is intimately linked to mitochondrial quality control. We present genetic and pharmacological interventions that effectively extend health- and life-span by acting on specific mitochondrial and pro-autophagic molecular targets. In the end, we delve into the crosstalk between autophagy and mitochondria, in what we refer to as the mitochondria-proteostasis axis, and explore the prospect of targeting this crosstalk to harness maximal therapeutic potential of anti-aging interventions.
Collapse
Affiliation(s)
- Andreas Zimmermann
- Institute of Molecular Biosciences, University of Graz, Graz, Austria.,Field of Excellence BioHealth - University of Graz, Graz, Austria
| | | | - Sarah Stryeck
- Institute of Interactive Systems and Data Science, Graz University of Technology, Graz, Austria
| | - Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria.,Metabolomics and Cell Biology Platforms, Institut Gustave Roussy, Villejuif, France.,Centre de Recherche des Cordeliers, Equipe Labellisée Par la Ligue Contre le Cancer, Université de Paris, Sorbonne Université, INSERM U1138, Institut Universitaire de France, Paris, France
| |
Collapse
|
18
|
The dialogue between the ubiquitin-proteasome system and autophagy: Implications in ageing. Ageing Res Rev 2020; 64:101203. [PMID: 33130248 DOI: 10.1016/j.arr.2020.101203] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/09/2020] [Accepted: 10/25/2020] [Indexed: 02/06/2023]
Abstract
Dysregulated proteostasis is one of the hallmarks of ageing. Damaged proteins may impair cellular function and their accumulation may lead to tissue dysfunction and disease. This is why protective mechanisms to safeguard the cell proteome have evolved. These mechanisms consist of cellular machineries involved in protein quality control, including regulators of protein translation, folding, trafficking and degradation. In eukaryotic cells, protein degradation occurs via two main pathways: the ubiquitin-proteasome system (UPS) and the autophagy-lysosome pathway. Although distinct pathways, they are not isolated systems and have a complementary nature, as evidenced by recent studies. These findings raise the question of how autophagy and the proteasome crosstalk. In this review we address how the two degradation pathways impact each other, thereby adding a new layer of regulation to protein degradation. We also analyze the implications of the UPS and autophagy in ageing.
Collapse
|
19
|
Activate or Inhibit? Implications of Autophagy Modulation as a Therapeutic Strategy for Alzheimer's Disease. Int J Mol Sci 2020; 21:ijms21186739. [PMID: 32937909 PMCID: PMC7554997 DOI: 10.3390/ijms21186739] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/01/2020] [Accepted: 09/04/2020] [Indexed: 12/19/2022] Open
Abstract
Neurodegenerative diseases result in a range of conditions depending on the type of proteinopathy, genes affected or the location of the degeneration in the brain. Proteinopathies such as senile plaques and neurofibrillary tangles in the brain are prominent features of Alzheimer’s disease (AD). Autophagy is a highly regulated mechanism of eliminating dysfunctional organelles and proteins, and plays an important role in removing these pathogenic intracellular protein aggregates, not only in AD, but also in other neurodegenerative diseases. Activating autophagy is gaining interest as a potential therapeutic strategy for chronic diseases featuring protein aggregation and misfolding, including AD. Although autophagy activation is a promising intervention, over-activation of autophagy in neurodegenerative diseases that display impaired lysosomal clearance may accelerate pathology, suggesting that the success of any autophagy-based intervention is dependent on lysosomal clearance being functional. Additionally, the effects of autophagy activation may vary significantly depending on the physiological state of the cell, especially during proteotoxic stress and ageing. Growing evidence seems to favour a strategy of enhancing the efficacy of autophagy by preventing or reversing the impairments of the specific processes that are disrupted. Therefore, it is essential to understand the underlying causes of the autophagy defect in different neurodegenerative diseases to explore possible therapeutic approaches. This review will focus on the role of autophagy during stress and ageing, consequences that are linked to its activation and caveats in modulating this pathway as a treatment.
Collapse
|
20
|
Yessenkyzy A, Saliev T, Zhanaliyeva M, Masoud AR, Umbayev B, Sergazy S, Krivykh E, Gulyayev A, Nurgozhin T. Polyphenols as Caloric-Restriction Mimetics and Autophagy Inducers in Aging Research. Nutrients 2020; 12:E1344. [PMID: 32397145 PMCID: PMC7285205 DOI: 10.3390/nu12051344] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/16/2020] [Accepted: 04/16/2020] [Indexed: 02/06/2023] Open
Abstract
It has been thought that caloric restriction favors longevity and healthy aging where autophagy plays a vital role. However, autophagy decreases during aging and that can lead to the development of aging-associated diseases such as cancer, diabetes, neurodegeneration, etc. It was shown that autophagy can be induced by mechanical or chemical stress. In this regard, various pharmacological compounds were proposed, including natural polyphenols. Apart from the ability to induce autophagy, polyphenols, such as resveratrol, are capable of modulating the expression of pro- and anti-apoptotic factors, neutralizing free radical species, affecting mitochondrial functions, chelating redox-active transition metal ions, and preventing protein aggregation. Moreover, polyphenols have advantages compared to chemical inducers of autophagy due to their intrinsic natural bio-compatibility and safety. In this context, polyphenols can be considered as a potential therapeutic tool for healthy aging either as a part of a diet or as separate compounds (supplements). This review discusses the epigenetic aspect and the underlying molecular mechanism of polyphenols as an anti-aging remedy. In addition, the recent advances of studies on NAD-dependent deacetylase sirtuin-1 (SIRT1) regulation of autophagy, the role of senescence-associated secretory phenotype (SASP) in cells senescence and their regulation by polyphenols have been highlighted as well. Apart from that, the review also revised the latest information on how polyphenols can help to improve mitochondrial function and modulate apoptosis (programmed cell death).
Collapse
Affiliation(s)
- Assylzhan Yessenkyzy
- Research Institute of Fundamental and Applied Medicine named after B. Atchabarov, S.D. Asfendiyarov Kazakh National Medical University, Almaty 050000, Kazakhstan; (A.Y.); (T.N.)
| | - Timur Saliev
- Research Institute of Fundamental and Applied Medicine named after B. Atchabarov, S.D. Asfendiyarov Kazakh National Medical University, Almaty 050000, Kazakhstan; (A.Y.); (T.N.)
| | - Marina Zhanaliyeva
- Department of Human Anatomy, NSC “Medical University of Astana”, Nur-Sultan 010000, Kazakhstan;
| | - Abdul-Razak Masoud
- Department of Biological Sciences, Louisiana Tech University, Ruston, LA 71270, USA;
| | - Bauyrzhan Umbayev
- National Laboratory Astana, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (B.U.); (S.S.); (A.G.)
| | - Shynggys Sergazy
- National Laboratory Astana, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (B.U.); (S.S.); (A.G.)
| | - Elena Krivykh
- Khanty-Mansiysk State Medical Academy, Tyumen Region, Khanty-Mansiysk Autonomous Okrug—Ugra, Khanty-Mansiysk 125438, Russia;
| | - Alexander Gulyayev
- National Laboratory Astana, Nazarbayev University, Nur-Sultan 010000, Kazakhstan; (B.U.); (S.S.); (A.G.)
| | - Talgat Nurgozhin
- Research Institute of Fundamental and Applied Medicine named after B. Atchabarov, S.D. Asfendiyarov Kazakh National Medical University, Almaty 050000, Kazakhstan; (A.Y.); (T.N.)
| |
Collapse
|
21
|
Khaltourina D, Matveyev Y, Alekseev A, Cortese F, Ioviţă A. Aging Fits the Disease Criteria of the International Classification of Diseases. Mech Ageing Dev 2020; 189:111230. [PMID: 32251691 DOI: 10.1016/j.mad.2020.111230] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/04/2020] [Accepted: 03/09/2020] [Indexed: 12/24/2022]
Abstract
The disease criteria used by the World Health Organization (WHO) were applied to human biological aging in order to assess whether aging can be classified as a disease. These criteria were developed for the 11th revision of the International Classification of Diseases (ICD) and included disease diagnostics, mechanisms, course and outcomes, known interventions, and linkage to genetic and environmental factors. RESULTS: Biological aging can be diagnosed with frailty indices, functional, blood-based biomarkers. A number of major causal mechanisms of human aging involved in various organs have been described, such as inflammation, replicative cellular senescence, immune senescence, proteostasis failures, mitochondrial dysfunctions, fibrotic propensity, hormonal aging, body composition changes, etc. We identified a number of clinically proven interventions, as well as genetic and environmental factors of aging. Therefore, aging fits the ICD-11 criteria and can be considered a disease. Our proposal was submitted to the ICD-11 Joint Task force, and this led to the inclusion of the extension code for "Ageing-related" (XT9T) into the "Causality" section of the ICD-11. This might lead to greater focus on biological aging in global health policy and might provide for more opportunities for the new therapy developers.
Collapse
Affiliation(s)
- Daria Khaltourina
- Department of Risk Factor Prevention, Federal Research Institute for Health Organization and Informatics of Ministry of Health of the Russian Federation, Dobrolyubova St. 11, Moscow, 127254, Russia; International Longevity Alliance, 19 avenue Jean Jaurès, Sceaux, 92330, France.
| | - Yuri Matveyev
- Research Lab, Moscow Regional Research and Clinical Institute, Schepkina St. 61/2 k.1, Moscow, 129110, Russia
| | - Aleksey Alekseev
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russia
| | - Franco Cortese
- Biogerontology Research Foundation, Apt 2354 Chynoweth House, Trevissome Park, Truro, London, TR4 8UN, UK
| | - Anca Ioviţă
- International Longevity Alliance, 19 avenue Jean Jaurès, Sceaux, 92330, France
| |
Collapse
|
22
|
Bareja A, Lee DE, White JP. Maximizing Longevity and Healthspan: Multiple Approaches All Converging on Autophagy. Front Cell Dev Biol 2019; 7:183. [PMID: 31555646 PMCID: PMC6742954 DOI: 10.3389/fcell.2019.00183] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 08/20/2019] [Indexed: 12/13/2022] Open
Abstract
Our understanding of the molecular basis of aging has greatly increased over the past few decades. In this review, we provide an overview of the key signaling pathways associated with aging, and whose modulation has been shown to extend lifespan in a range of model organisms. We also describe how these pathways converge onto autophagy, a catabolic process that functions to recycle dysfunctional cellular material and maintains energy homeostasis. Finally, we consider various approaches of therapeutically modulating these longevity pathways, highlighting exercise as a potent geroprotector.
Collapse
Affiliation(s)
- Akshay Bareja
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, United States
| | - David E Lee
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, United States
| | - James P White
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, NC, United States.,Division of Hematology, Department of Medicine, Duke University School of Medicine, Durham, NC, United States.,Duke Center for the Study of Aging and Human Development, Duke University School of Medicine, Durham, NC, United States
| |
Collapse
|
23
|
Barbosa MC, Grosso RA, Fader CM. Hallmarks of Aging: An Autophagic Perspective. Front Endocrinol (Lausanne) 2019; 9:790. [PMID: 30687233 PMCID: PMC6333684 DOI: 10.3389/fendo.2018.00790] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 12/17/2018] [Indexed: 12/16/2022] Open
Abstract
Autophagy is a major protein turnover pathway by which cellular components are delivered into the lysosomes for degradation and recycling. This intracellular process is able to maintain cellular homeostasis under stress conditions, and its dysregulation could lead to the development of physiological alterations. The autophagic activity has been found to decrease with age, likely contributing to the accumulation of damaged macromolecules and organelles during aging. Interestingly, failure of the autophagic process has been reported to worsen aging-associated diseases, such as neurodegeneration or cancer, among others. Likewise, it has been proposed in different organisms that maintenance of a proper autophagic activity contributes to extending longevity. In this review, we discuss recent papers showing the impact of autophagy on cell activity and age-associated diseases, highlighting the relevance of this process to the hallmarks of aging. Thus, understanding how autophagy plays an important role in aging opens new avenues for the discovery of biochemical and pharmacological targets and the development of novel anti-aging therapeutic approaches.
Collapse
Affiliation(s)
- María Carolina Barbosa
- Laboratorio de Biología Celular y Molecular, Instituto de Histología y Embriología (IHEM), Universidad Nacional de Cuyo, CONICET, Mendoza, Argentina
| | - Rubén Adrián Grosso
- Laboratorio de Biología Celular y Molecular, Instituto de Histología y Embriología (IHEM), Universidad Nacional de Cuyo, CONICET, Mendoza, Argentina
| | - Claudio Marcelo Fader
- Laboratorio de Biología Celular y Molecular, Instituto de Histología y Embriología (IHEM), Universidad Nacional de Cuyo, CONICET, Mendoza, Argentina
- Facultad de Odontología, Universidad Nacional de Cuyo, Mendoza, Argentina
| |
Collapse
|
24
|
Vitale G, Pellegrino G, Vollery M, Hofland LJ. ROLE of IGF-1 System in the Modulation of Longevity: Controversies and New Insights From a Centenarians' Perspective. Front Endocrinol (Lausanne) 2019; 10:27. [PMID: 30774624 PMCID: PMC6367275 DOI: 10.3389/fendo.2019.00027] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 01/15/2019] [Indexed: 12/19/2022] Open
Abstract
Human aging is currently defined as a physiological decline of biological functions in the body with a continual adaptation to internal and external damaging. The endocrine system plays a major role in orchestrating cellular interactions, metabolism, growth, and aging. Several in vivo studies from worms to mice showed that downregulated activity of the GH/IGF-1/insulin pathway could be beneficial for the extension of human life span, whereas results are contradictory in humans. In the present review, we discuss the potential role of the IGF-1 system in modulation of longevity, hypothesizing that the endocrine and metabolic adaptation observed in centenarians and in mammals during caloric restriction may be a physiological strategy for extending lifespan through a slower cell growing/metabolism, a better physiologic reserve capacity, a shift of cellular metabolism from cell proliferation to repair activities and a decrease in accumulation of senescent cells. Therefore, understanding of the link between IGF-1/insulin system and longevity may have future clinical applications in promoting healthy aging and in Rehabilitation Medicine.
Collapse
Affiliation(s)
- Giovanni Vitale
- Laboratorio Sperimentale di Ricerche di Neuroendocrinologia Geriatrica ed Oncologica, Istituto Auxologico Italiano IRCCS, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
- *Correspondence: Giovanni Vitale
| | - Giuseppe Pellegrino
- Faculty of Medicine, University of Campania “Luigi Vanvitelli”, Naples, Italy
| | | | - Leo J. Hofland
- Division Endocrinology, Department of Internal Medicine, Erasmus Medical Center, Rotterdam, Netherlands
| |
Collapse
|
25
|
Xiao FH, Chen XQ, Yu Q, Ye Y, Liu YW, Yan D, Yang LQ, Chen G, Lin R, Yang L, Liao X, Zhang W, Zhang W, Tang NLS, Wang XF, Zhou J, Cai WW, He YH, Kong QP. Transcriptome evidence reveals enhanced autophagy-lysosomal function in centenarians. Genome Res 2018; 28:1601-1610. [PMID: 30352807 PMCID: PMC6211641 DOI: 10.1101/gr.220780.117] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 10/03/2018] [Indexed: 12/18/2022]
Abstract
Centenarians (CENs) are excellent subjects to study the mechanisms of human longevity and healthy aging. Here, we analyzed the transcriptomes of 76 centenarians, 54 centenarian-children, and 41 spouses of centenarian-children by RNA sequencing and found that, among the significantly differentially expressed genes (SDEGs) exhibited by CENs, the autophagy-lysosomal pathway is significantly up-regulated. Overexpression of several genes from this pathway, CTSB, ATP6V0C, ATG4D, and WIPI1, could promote autophagy and delay senescence in cultured IMR-90 cells, while overexpression of the Drosophila homolog of WIPI1, Atg18a, extended the life span in transgenic flies. Interestingly, the enhanced autophagy-lysosomal activity could be partially passed on to their offspring, as manifested by their higher levels of both autophagy-encoding genes and serum beclin 1 (BECN1). In light of the normal age-related decline of autophagy-lysosomal functions, these findings provide a compelling explanation for achieving longevity in, at least, female CENs, given the gender bias in our collected samples, and suggest that the enhanced waste-cleaning activity via autophagy may serve as a conserved mechanism to prolong the life span from Drosophila to humans.
Collapse
Affiliation(s)
- Fu-Hui Xiao
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Kunming Key Laboratory of Healthy Aging Study, Kunming 650223, China
| | - Xiao-Qiong Chen
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Kunming Key Laboratory of Healthy Aging Study, Kunming 650223, China
| | - Qin Yu
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China.,Kunming Key Laboratory of Healthy Aging Study, Kunming 650223, China
| | - Yunshuang Ye
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China.,Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China
| | - Yao-Wen Liu
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China.,Kunming Key Laboratory of Healthy Aging Study, Kunming 650223, China
| | - Dongjing Yan
- Department of Biochemistry and Molecular Biology, Hainan Medical College, Haikou 571199, China
| | - Li-Qin Yang
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Kunming Key Laboratory of Healthy Aging Study, Kunming 650223, China
| | - Guijun Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China
| | - Rong Lin
- Department of Biology, Hainan Medical College, Haikou 571199, China
| | - Liping Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China
| | - Xiaoping Liao
- Department of Neurology, the First Affiliated Hospital of Hainan Medical College, Haikou 571199, China
| | - Wen Zhang
- Department of Biochemistry and Molecular Biology, Hainan Medical College, Haikou 571199, China
| | - Wei Zhang
- Kunming College of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China.,Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China
| | - Nelson Leung-Sang Tang
- KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Department of Chemical Pathology and Laboratory for Genetics of Disease Susceptibility, Li Ka Shing Institute of Health Sciences, and School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong 999077, China
| | - Xiao-Fan Wang
- Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina 27710, USA
| | - Jumin Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Kunming 650223, China
| | - Wang-Wei Cai
- Department of Biochemistry and Molecular Biology, Hainan Medical College, Haikou 571199, China
| | - Yong-Han He
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Kunming Key Laboratory of Healthy Aging Study, Kunming 650223, China
| | - Qing-Peng Kong
- State Key Laboratory of Genetic Resources and Evolution/Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming 650223, China.,KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming 650223, China.,Kunming Key Laboratory of Healthy Aging Study, Kunming 650223, China
| |
Collapse
|
26
|
Davis GE, Lowell WE. Solar energy at birth and human lifespan. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 186:59-68. [DOI: 10.1016/j.jphotobiol.2018.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/29/2018] [Accepted: 07/04/2018] [Indexed: 01/03/2023]
|
27
|
Rebelo-Marques A, De Sousa Lages A, Andrade R, Ribeiro CF, Mota-Pinto A, Carrilho F, Espregueira-Mendes J. Aging Hallmarks: The Benefits of Physical Exercise. Front Endocrinol (Lausanne) 2018; 9:258. [PMID: 29887832 PMCID: PMC5980968 DOI: 10.3389/fendo.2018.00258] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 05/03/2018] [Indexed: 12/15/2022] Open
Abstract
World population has been continuously increasing and progressively aging. Aging is characterized by a complex and intraindividual process associated with nine major cellular and molecular hallmarks, namely, genomic instability, telomere attrition, epigenetic alterations, a loss of proteostasis, deregulated nutrient sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and altered intercellular communication. This review exposes the positive antiaging impact of physical exercise at the cellular level, highlighting its specific role in attenuating the aging effects of each hallmark. Exercise should be seen as a polypill, which improves the health-related quality of life and functional capabilities while mitigating physiological changes and comorbidities associated with aging. To achieve a framework of effective physical exercise interventions on aging, further research on its benefits and the most effective strategies is encouraged.
Collapse
Affiliation(s)
- Alexandre Rebelo-Marques
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Clínica do Dragão, Espregueira-Mendes Sports Centre – FIFA Medical Centre of Excellence, Porto, Portugal
- Dom Henrique Research Centre, Porto, Portugal
| | - Adriana De Sousa Lages
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Endocrinology, Diabetes and Metabolism Department, Coimbra Hospital and University Center, Coimbra, Portugal
| | - Renato Andrade
- Clínica do Dragão, Espregueira-Mendes Sports Centre – FIFA Medical Centre of Excellence, Porto, Portugal
- Dom Henrique Research Centre, Porto, Portugal
- Faculty of Sports, University of Porto, Porto, Portugal
| | | | | | - Francisco Carrilho
- Endocrinology, Diabetes and Metabolism Department, Coimbra Hospital and University Center, Coimbra, Portugal
| | - João Espregueira-Mendes
- Clínica do Dragão, Espregueira-Mendes Sports Centre – FIFA Medical Centre of Excellence, Porto, Portugal
- Dom Henrique Research Centre, Porto, Portugal
- 3B’s Research Group—Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal
- ICVS/3B’s–PT Government Associate Laboratory, Guimarães, Braga, Portugal
- Orthopaedics Department of Minho University, Minho, Portugal
| |
Collapse
|
28
|
Carrera-Bastos P, Picazo Ó, Fontes-Villalba M, Pareja-Galeano H, Lindeberg S, Martínez-Selles M, Lucia A, Emanuele E. Serum Zonulin and Endotoxin Levels in Exceptional Longevity versus Precocious Myocardial Infarction. Aging Dis 2018; 9:317-321. [PMID: 29896420 PMCID: PMC5963352 DOI: 10.14336/ad.2017.0630] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/30/2017] [Indexed: 12/22/2022] Open
Abstract
Endotoxemia-induced inflammation has been associated with insulin resistance and atherosclerosis, ultimately increasing the risk of coronary heart disease. Increased intestinal permeability is an important event leading to endotoxemia. This study aims to elucidate the possible association between endotoxin (lipopolysaccharide) and zonulin (a biomarker of intestinal permeability) levels and the risk of coronary heart disease, and thus healthy aging. Serum levels of zonulin, lipopolysaccharide and soluble CD14 (a protein that binds lipopolysaccharide) were measured in disease-free centenarians, young healthy controls and patients with precocious acute myocardial infarction. Disease-free centenarians had significantly lower levels of serum zonulin (P<0.01) and lipopolysaccharide (P<0.001) than young patients with acute myocardial infarction, and had significantly lower concentrations of serum lipopolysaccharide than young healthy controls (P<0.05). No significant differences were found for soluble CD14 between groups. Our findings may stimulate further research into the role played by intestinal permeability and endotoxemia not only in coronary heart disease but also in lifespan modulation.
Collapse
Affiliation(s)
- Pedro Carrera-Bastos
- 1Clinical Research Center, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden.,2NutriScience - Education and Consulting, Lisbon, Portugal
| | - Óscar Picazo
- 2NutriScience - Education and Consulting, Lisbon, Portugal
| | - Maelán Fontes-Villalba
- 1Clinical Research Center, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden.,2NutriScience - Education and Consulting, Lisbon, Portugal
| | - Helios Pareja-Galeano
- 3European University of Madrid, Spain.,4Research Institute of Hospital 12 de Octubre ('i+12'), Madrid, Spain
| | - Staffan Lindeberg
- 1Clinical Research Center, Faculty of Medicine, Center for Primary Health Care Research, Lund University, Malmö, Sweden
| | - Manuel Martínez-Selles
- 5Servicio de Cardiología, Hospital Universitario Gregorio Marañón, CIBERCV, Universidad Europea, Universidad Complutense, Madrid, Spain
| | - Alejandro Lucia
- 3European University of Madrid, Spain.,4Research Institute of Hospital 12 de Octubre ('i+12'), Madrid, Spain
| | | |
Collapse
|
29
|
Schlemmer F, Boyer L, Soumagne T, Ridoux A, Chouaid C, Maitre B, Lanone S, Adnot S, Audureau E, Boczkowski J. Beclin1 circulating levels and accelerated aging markers in COPD. Cell Death Dis 2018; 9:156. [PMID: 29402890 PMCID: PMC5833829 DOI: 10.1038/s41419-017-0178-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/21/2017] [Accepted: 11/22/2017] [Indexed: 01/07/2023]
Affiliation(s)
- Frédéric Schlemmer
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France ,0000 0001 2292 1474grid.412116.1Unité de Pneumologie, APHP, Hôpital Henri Mondor, DHU-ATVB, Créteil, France
| | - Laurent Boyer
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France ,0000 0001 2292 1474grid.412116.1Département de Physiologie-Explorations Fonctionnelles, APHP, Hôpital Henri Mondor, DHU-ATVB, Créteil, France
| | - Thibaud Soumagne
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France
| | - Audrey Ridoux
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France
| | - Christos Chouaid
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France ,0000 0004 1765 2136grid.414145.1Département de Pneumologie et Pathologie Professionnelle, Centre Hospitalier Intercommunal, DHU-ATVB, Créteil, France
| | - Bernard Maitre
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France ,0000 0001 2292 1474grid.412116.1Unité de Pneumologie, APHP, Hôpital Henri Mondor, DHU-ATVB, Créteil, France ,0000 0004 1765 2136grid.414145.1Département de Pneumologie et Pathologie Professionnelle, Centre Hospitalier Intercommunal, DHU-ATVB, Créteil, France
| | - Sophie Lanone
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France
| | - Serge Adnot
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France ,0000 0001 2292 1474grid.412116.1Département de Physiologie-Explorations Fonctionnelles, APHP, Hôpital Henri Mondor, DHU-ATVB, Créteil, France
| | - Etienne Audureau
- 0000 0001 2292 1474grid.412116.1Département de Santé Publique, Unité de Recherche Clinique (URC-Mondor), APHP, Hôpital Henri Mondor, IMRB EA7376, Clinical Epidemiology and Aging (CEpiA), Créteil, France
| | - Jorge Boczkowski
- 0000 0004 0386 3258grid.462410.5INSERM U955, Institut Mondor de Recherche Biomédicale and Université Paris Est-Créteil (UPEC), Faculté de Médecine, Créteil, France ,0000 0001 2292 1474grid.412116.1Unité de Pneumologie, APHP, Hôpital Henri Mondor, DHU-ATVB, Créteil, France
| |
Collapse
|
30
|
Fabbrocini G, Capasso C, Donnarumma M, Cantelli M, Le Maître M, Monfrecola G, Emanuele E. A peel-off facial mask comprising myoinositol and trehalose-loaded liposomes improves adult female acne by reducing local hyperandrogenism and activating autophagy. J Cosmet Dermatol 2017; 16:480-484. [DOI: 10.1111/jocd.12340] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2017] [Indexed: 01/26/2023]
Affiliation(s)
- Gabriella Fabbrocini
- Section of Dermatology; Department of Clinical Medicine and Surgery; University of Naples Federico II; Naples Italy
| | - Claudia Capasso
- Section of Dermatology; Department of Clinical Medicine and Surgery; University of Naples Federico II; Naples Italy
| | - Marianna Donnarumma
- Section of Dermatology; Department of Clinical Medicine and Surgery; University of Naples Federico II; Naples Italy
| | - Mariateresa Cantelli
- Section of Dermatology; Department of Clinical Medicine and Surgery; University of Naples Federico II; Naples Italy
| | | | - Giuseppe Monfrecola
- Section of Dermatology; Department of Clinical Medicine and Surgery; University of Naples Federico II; Naples Italy
| | | |
Collapse
|
31
|
Sanchis-Gomar F, Santos-Lozano A, Pareja-Galeano H, Garatachea N, Alis R, Fiuza-Luces C, Morán M, Emanuele E, Lucia A. Galectin-3, osteopontin and successful aging. Clin Chem Lab Med 2017; 54:873-7. [PMID: 26479349 DOI: 10.1515/cclm-2015-0821] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 09/15/2015] [Indexed: 11/15/2022]
Abstract
BACKGROUND Individuals who reach exceptional longevity (100+ years of age) free of common chronic age diseases (i.e. 'dodgers') arguably represent the paradigm of successful aging in humans. As such, identification of potential biomarkers associated with this phenomenon is of medical interest. METHODS We measured serum levels of galectin-3 and osteopontin, both of which have been shown to be linked with major chronic or aging-related disorders in younger populations, in centenarian 'dodgers' (n=81; 40 men; 100-104 years) and healthy controls (n=41; 24 men, 70-80 years). RESULTS Both biomarkers showed significantly lower values (p<0.001) in the former (galectin-3: 2.4±1.7 vs. 4.8±2.8 ng/mL; osteopontin: 38.1±27.7 vs. 72.6±33.1 μg/mL). Logistic regression analysis identified the combination of these two biomarkers as a significant predictor variable associated with successful aging regardless of sex (p<0.001). The area under the curve (AUC) classified the ability of galectin-3 and osteopontin to predict the likelihood of successful aging as 'fair' (AUC=0.75) and 'good' (AUC=0.80), respectively. Particularly, the combination of the two biomarkers showed good discriminatory power for successful aging (AUC=0.86), with sensitivity=83% and specificity=74%. CONCLUSIONS Lower levels of both galectin-3 and osteopontin are associated with successful aging, representing potential biomarkers of this condition. Our cross-sectional data must be however approached with caution. Further research is necessary to replicate the present preliminary results in other cohorts and to identify the potential use of galectin-3 and osteopontin as potential targets (or at least predictors) in future personalized anti-aging therapies.
Collapse
|
32
|
Figueira I, Fernandes A, Mladenovic Djordjevic A, Lopez-Contreras A, Henriques CM, Selman C, Ferreiro E, Gonos ES, Trejo JL, Misra J, Rasmussen LJ, Xapelli S, Ellam T, Bellantuono I. Interventions for age-related diseases: Shifting the paradigm. Mech Ageing Dev 2016; 160:69-92. [DOI: 10.1016/j.mad.2016.09.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 09/18/2016] [Accepted: 09/28/2016] [Indexed: 12/14/2022]
|
33
|
Alis R, Santos-Lozano A, Sanchis-Gomar F, Pareja-Galeano H, Fiuza-Luces C, Garatachea N, Lucia A, Emanuele E. Trace elements levels in centenarian 'dodgers'. J Trace Elem Med Biol 2016; 35:103-6. [PMID: 27049133 DOI: 10.1016/j.jtemb.2016.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 02/09/2016] [Accepted: 02/10/2016] [Indexed: 12/29/2022]
Abstract
Trace element bioavailability can play a role in several metabolic and physiological pathways known to be altered during the aging process. We aimed to explore the association of trace elements with increased lifespan by analyzing the circulating levels of seven trace elements (Cr, Cu, Fe, Mn, Mo, Se and Zn) in a cohort of healthy centenarians or 'dodgers' (≥100 years, free of major age-related diseases) in comparison with sex-matched younger elderly controls. Centenarians showed significant lower Cu (783.7 (76.7, 1608.9) vs 962.5 (676.3, 2064.4)μg/mL, P<0.001), but higher Fe (1.3 (0.4, 4.7) vs 1.1 (0.5, 8.4)μg/mL, P=0.003) and Se (85.7 (43.0, 256.7) vs 77.8 (24.3, 143.8)ng/mL, P=0.002) values compared with elderly controls. The logistic regression analysis identified the combination of Cu and Se as significant predictor variables associated with successful aging (P=0.001), while receiver operating characteristic (ROC) analysis confirmed that Cu and Se (either alone or in combination) were independent variables associated with healthy aging. An 'improved' trace element profile (reduced Cu and elevated Se, which are involved in key physiological processes) could play a role in the resistance to disease showed by centenarian 'dodgers', and, therefore, at least partly, be involved in the healthy aging phenotype shown by these subjects. These results should be confirmed in larger cohorts of other geographic/ethnic origin and the potential cause-effect association tested in mechanistic experimental settings.
Collapse
Affiliation(s)
- Rafael Alis
- School of Medicine and Research Institute "Dr. Viña Giner", Molecular and Mitochondrial Medicine, Catholic University of Valencia San Vicente Mártir, Valencia, Spain; Servicio de Nefrología, Hospital Universitario y Politécnico La Fe, Valencia, Spain.
| | - Alejandro Santos-Lozano
- Research Institute of Hospital 12 de Octubre ("i+12"), Madrid, Spain; GIDFYS, European University Miguel de Cervantes, Department of Health Sciences, Valladolid, Spain
| | | | - Helios Pareja-Galeano
- Research Institute of Hospital 12 de Octubre ("i+12"), Madrid, Spain; European University of Madrid, Madrid, Spain
| | | | - Nuria Garatachea
- Research Institute of Hospital 12 de Octubre ("i+12"), Madrid, Spain; Departamento de Fisiatría y Enfermería, Facultad de Ciencias de la Salud y del Deporte, Instituto Agroalimentario de Aragón- IA2 - (Universidad de Zaragoza-CITA), Zaragoza, Spain
| | - Alejandro Lucia
- Research Institute of Hospital 12 de Octubre ("i+12"), Madrid, Spain; European University of Madrid, Madrid, Spain
| | | |
Collapse
|
34
|
Zealley B, de Grey AD. Commentary on Some Recent Theses Relevant to Combating Aging: April 2016. Rejuvenation Res 2016. [DOI: 10.1089/rej.2016.1822] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
|
35
|
Garatachea N, Pareja-Galeano H, Sanchis-Gomar F, Santos-Lozano A, Fiuza-Luces C, Morán M, Emanuele E, Joyner MJ, Lucia A. Exercise attenuates the major hallmarks of aging. Rejuvenation Res 2016; 18:57-89. [PMID: 25431878 DOI: 10.1089/rej.2014.1623] [Citation(s) in RCA: 243] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Regular exercise has multi-system anti-aging effects. Here we summarize how exercise impacts the major hallmarks of aging. We propose that, besides searching for novel pharmaceutical targets of the aging process, more research efforts should be devoted to gaining insights into the molecular mediators of the benefits of exercise and to implement effective exercise interventions for elderly people.
Collapse
Affiliation(s)
- Nuria Garatachea
- 1 Faculty of Health and Sport Science, University of Zaragoza , Huesca, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
|
37
|
Sanchis-Gomar F, Pareja-Galeano H, Santos-Lozano A, Garatachea N, Fiuza-Luces C, Venturini L, Ricevuti G, Lucia A, Emanuele E. A preliminary candidate approach identifies the combination of chemerin, fetuin-A, and fibroblast growth factors 19 and 21 as a potential biomarker panel of successful aging. AGE (DORDRECHT, NETHERLANDS) 2015; 37:9776. [PMID: 25911468 PMCID: PMC4409588 DOI: 10.1007/s11357-015-9776-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 04/09/2015] [Indexed: 06/04/2023]
Abstract
Although the number of centenarians is growing worldwide, the potential factors influencing the aging process remain only partially elucidated. Researchers are increasingly focusing toward biomarkers as tools to shed more light on the pathophysiology of complex phenotypes, including the ability to reach successful aging, i.e., free of major chronic diseases. We therefore conducted a case-control study examining the potential associations of multiple candidate biomarkers in healthy centenarians and sex-matched healthy elderly controls. Using a case-control study of 81 centenarians (aged ≥ 100 years) selected based on the fact that they were disease-free and 46 healthy elderly controls (aged 70-80 years), serum levels of 15 different candidate biomarkers involved in the regulation of metabolism, angiogenesis, inflammation, and bone formation were measured. Of the 15 biomarkers tested, four molecules (chemerin, fetuin-A, and fibroblast growth factors [FGF] 19 and 21) were found to be independently associated with successful aging regardless of sex. Logistic regression analysis confirmed that chemerin, fetuin-A, FGF19, and FGF21 were independently associated with successful aging [predicted probability (PP) = 1 / [1 + 1 / exp (11.832 - 0.027 × (chemerin) - 0.009 × (fetuin-A) + 0.014 × (FGF19) - 0.007 × (FGF21)]. The area under the curve (AUC) of predicted probability values for the four-biomarker panel revealed that it can discriminate between centenarians and elderly controls with excellent accuracy (AUC > 0.94, P < 0.001). Although preliminary in essence and limited by the low sample size and lack of replication in other independent cohorts, our data suggest an independent association between successful aging and serum chemerin, fetuin-A, FGF19, and FGF21, which may provide novel information on the mechanisms behind the human aging process. Whether the four-biomarker panel may predict successful aging deserves further scrutiny.
Collapse
Affiliation(s)
- Fabian Sanchis-Gomar
- Research Institute of Hospital 12 de Octubre ('i+12'), Avda. de Córdoba s/n, 28041, Madrid, Spain,
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Na HJ, Park JS, Pyo JH, Jeon HJ, Kim YS, Arking R, Yoo MA. Metformin inhibits age-related centrosome amplification in Drosophila midgut stem cells through AKT/TOR pathway. Mech Ageing Dev 2015; 149:8-18. [PMID: 25988874 DOI: 10.1016/j.mad.2015.05.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/23/2015] [Accepted: 05/06/2015] [Indexed: 12/16/2022]
Abstract
We delineated the mechanism regulating the inhibition of centrosome amplification by metformin in Drosophila intestinal stem cells (ISCs). Age-related changes in tissue-resident stem cells may be closely associated with tissue aging and age-related diseases, such as cancer. Centrosome amplification is a hallmark of cancers. Our recent work showed that Drosophila ISCs are an excellent model for stem cell studies evaluating age-related increase in centrosome amplification. Here, we showed that metformin, a recognized anti-cancer drug, inhibits age- and oxidative stress-induced centrosome amplification in ISCs. Furthermore, we revealed that this effect is mediated via down-regulation of AKT/target of rapamycin (TOR) activity, suggesting that metformin prevents centrosome amplification by inhibiting the TOR signaling pathway. Additionally, AKT/TOR signaling hyperactivation and metformin treatment indicated a strong correlation between DNA damage accumulation and centrosome amplification in ISCs, suggesting that DNA damage might mediate centrosome amplification. Our study reveals the beneficial and protective effects of metformin on centrosome amplification via AKT/TOR signaling modulation. We identified a new target for the inhibition of age- and oxidative stress-induced centrosome amplification. We propose that the Drosophila ISCs may be an excellent model system for in vivo studies evaluating the effects of anti-cancer drugs on tissue-resident stem cell aging.
Collapse
Affiliation(s)
- Hyun-Jin Na
- Department of Molecular Biology, Pusan National University, Busan 609-735, South Korea
| | - Joung-Sun Park
- Department of Molecular Biology, Pusan National University, Busan 609-735, South Korea
| | - Jung-Hoon Pyo
- Department of Molecular Biology, Pusan National University, Busan 609-735, South Korea
| | - Ho-Jun Jeon
- Department of Molecular Biology, Pusan National University, Busan 609-735, South Korea
| | - Young-Shin Kim
- Department of Molecular Biology, Pusan National University, Busan 609-735, South Korea
| | - Robert Arking
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, USA
| | - Mi-Ae Yoo
- Department of Molecular Biology, Pusan National University, Busan 609-735, South Korea.
| |
Collapse
|