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Peng T, Ding M, Yan H, Zhang P, Tian R, Guo Y, Zheng L. Endurance exercise upregulates mtp expression in aged Drosophila to ameliorate age-related diastolic dysfunction and extend lifespan. Physiol Rep 2024; 12:e15929. [PMID: 38307709 PMCID: PMC10837045 DOI: 10.14814/phy2.15929] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 01/08/2024] [Accepted: 01/14/2024] [Indexed: 02/04/2024] Open
Abstract
Diastolic dysfunction is a major cardiac dysfunction, and an important predisposing factor is age. Although exercise training is often used for the prevention and treatment of cardiovascular disease nowadays, little is currently known about whether exercise interventions associated with the slowing of cardiac aging are related to mtp-related pathways. In the present study, the UAS/Tub-Gal4 system was used to knockdown whole-body mtp expression levels in Drosophila, which underwent 2 weeks of endurance training. By conducting different assays and quantifying different indicators, we sought to investigate the relationship between mtp, exercise, and age-related diastolic dysfunction. We found that (1) Drosophila in the mtpRNAi youth group exhibited age-related diastolic dysfunction and had a significantly shorter mean lifespan. (2) Endurance exercise could improve diastolic dysfunction and prolong lifespan in aged Drosophila. (3) Endurance exercise could increase the expression levels of apolpp and Acox3, and decrease the levels of TC, LDL-C, and TG in the aged group. In summary, aging causes age-associated diastolic dysfunction in Drosophila, and systemic knockdown of mtp causes premature age-associated diastolic dysfunction in young Drosophila. Besides, endurance exercise improves age-related diastolic dysfunction and prolongs lifespan.
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Affiliation(s)
- Tianhang Peng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Meng Ding
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Hanhui Yan
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Ping Zhang
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Rui Tian
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Yin Guo
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
| | - Lan Zheng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan ProvinceHunan Normal UniversityChangshaChina
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Mirzoyan Z, Valenza A, Zola S, Bonfanti C, Arnaboldi L, Ferrari N, Pollard J, Lupi V, Cassinelli M, Frattaroli M, Sahin M, Pasini ME, Bellosta P. A Drosophila model targets Eiger/TNFα to alleviate obesity-related insulin resistance and macrophage infiltration. Dis Model Mech 2023; 16:dmm050388. [PMID: 37828911 PMCID: PMC10651092 DOI: 10.1242/dmm.050388] [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: 08/12/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023] Open
Abstract
Obesity is associated with various metabolic disorders, such as insulin resistance and adipose tissue inflammation (ATM), characterized by macrophage infiltration into adipose cells. This study presents a new Drosophila model to investigate the mechanisms underlying these obesity-related pathologies. We employed genetic manipulation to reduce ecdysone levels to prolong the larval stage. These animals are hyperphagic and exhibit features resembling obesity in mammals, including increased lipid storage, adipocyte hypertrophy and high circulating glucose levels. Moreover, we observed significant infiltration of immune cells (hemocytes) into the fat bodies, accompanied by insulin resistance. We found that attenuation of Eiger/TNFα signaling reduced ATM and improved insulin sensitivity. Furthermore, using metformin and the antioxidants anthocyanins, we ameliorated both phenotypes. Our data highlight evolutionarily conserved mechanisms allowing the development of Drosophila models for discovering therapeutic pathways in adipose tissue immune cell infiltration and insulin resistance. Our model can also provide a platform to perform genetic screens or test the efficacy of therapeutic interventions for diseases such as obesity, type 2 diabetes and non-alcoholic fatty liver disease.
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Affiliation(s)
- Zhasmine Mirzoyan
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
| | - Alice Valenza
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | - Sheri Zola
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
| | - Carola Bonfanti
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | | | - Nicholas Ferrari
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
| | - John Pollard
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | - Valeria Lupi
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | | | | | - Mehtap Sahin
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
- Department of Biology, University of Ankara, 06110 Ankara, Turkey
| | | | - Paola Bellosta
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
- Department of Medicine, NYU Langone Medical Center, 10016 New York, USA
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Dondi C, Vogler G, Gupta A, Walls SM, Kervadec A, Romero MR, Diop SB, Goode J, Thomas JB, Colas AR, Bodmer R, Montminy M, Ocorr K. The nutrient sensor CRTC & Sarcalumenin / Thinman represent a new pathway in cardiac hypertrophy. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.02.560407. [PMID: 37873259 PMCID: PMC10592890 DOI: 10.1101/2023.10.02.560407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Obesity and type 2 diabetes are at epidemic levels and a significant proportion of these patients are diagnosed with left ventricular hypertrophy. CREB R egulated T ranscription C o-activator ( CRTC ) is a key regulator of metabolism in mammalian hepatocytes, where it is activated by calcineurin (CaN) to increase expression of gluconeogenic genes. CaN is known its role in pathological cardiac hypertrophy, however, a role for CRTC in the heart has not been identified. In Drosophila , CRTC null mutants have little body fat and exhibit severe cardiac restriction, myofibrillar disorganization, cardiac fibrosis and tachycardia, all hallmarks of heart disease. Cardiac-specific knockdown of CRTC , or its coactivator CREBb , mimicked the reduced body fat and heart defects of CRTC null mutants. Comparative gene expression in CRTC loss- or gain-of-function fly hearts revealed contra-regulation of genes involved in glucose, fatty acid, and amino acid metabolism, suggesting that CRTC also acts as a metabolic switch in the heart. Among the contra-regulated genes with conserved CREB binding sites, we identified the fly ortholog of Sarcalumenin, which is a Ca 2+ -binding protein in the sarcoplasmic reticulum. Cardiac knockdown recapitulated the loss of CRTC cardiac restriction and fibrotic phenotypes, suggesting it is a downstream effector of CRTC we named thinman ( tmn ). Importantly, cardiac overexpression of either CaN or CRTC in flies caused hypertrophy that was reversed in a CRTC mutant background, suggesting CRTC mediates hypertrophy downstream of CaN, perhaps as an alternative to NFAT. CRTC novel role in the heart is likely conserved in vertebrates as knockdown in zebrafish also caused cardiac restriction, as in fl ies. These data suggest that CRTC is involved in myocardial cell maintenance and that CaN-CRTC- Sarcalumenin/ tmn signaling represents a novel and conserved pathway underlying cardiac hypertrophy.
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Regular Exercise in Drosophila Prevents Age-Related Cardiac Dysfunction Caused by High Fat and Heart-Specific Knockdown of skd. Int J Mol Sci 2023; 24:ijms24021216. [PMID: 36674733 PMCID: PMC9865808 DOI: 10.3390/ijms24021216] [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] [Received: 11/20/2022] [Revised: 01/01/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Skuld (skd) is a subunit of the Mediator complex subunit complex. In the heart, skd controls systemic obesity, is involved in systemic energy metabolism, and is closely linked to cardiac function and aging. However, it is unclear whether the effect of cardiac skd on cardiac energy metabolism affects cardiac function. We found that cardiac-specific knockdown of skd showed impaired cardiac function, metabolic impairment, and premature aging. Drosophila was subjected to an exercise and high-fat diet (HFD) intervention to explore the effects of exercise on cardiac skd expression and cardiac function in HFD Drosophila. We found that Hand-Gal4>skd RNAi (KC) Drosophila had impaired cardiac function, metabolic impairment, and premature aging. Regular exercise significantly improved cardiac function and metabolism and delayed aging in HFD KC Drosophila. Thus, our study found that the effect of skd on cardiac energy metabolism in the heart affected cardiac function. Exercise may counteract age-related cardiac dysfunction and metabolic disturbances caused by HFD and heart-specific knockdown of skd. Skd may be a potential therapeutic target for heart disease.
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Duarte T, Silva MDM, Michelotti P, Barbosa NBDV, Feltes BC, Dorn M, Rocha JBTD, Dalla Corte CL. The Drosophila melanogaster ACE2 ortholog genes are differently expressed in obesity/diabetes and aging models: Implications for COVID-19 pathology. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166551. [PMID: 36116726 PMCID: PMC9474972 DOI: 10.1016/j.bbadis.2022.166551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/08/2022] [Accepted: 09/12/2022] [Indexed: 11/29/2022]
Abstract
The Spike glycoprotein of SARS-CoV-2, the virus responsible for coronavirus disease 2019, binds to its ACE2 receptor for internalization in the host cells. Elderly individuals or those with subjacent disorders, such as obesity and diabetes, are more susceptible to COVID-19 severity. Additionally, several SARS-CoV-2 variants appear to enhance the Spike-ACE2 interaction, which increases transmissibility and death. Considering that the fruit fly is a robust animal model in metabolic research and has two ACE2 orthologs, Ance and Acer, in this work, we studied the effects of two hypercaloric diets (HFD and HSD) and aging on ACE2 orthologs mRNA expression levels in Drosophila melanogaster. To complement our work, we analyzed the predicted binding affinity between the Spike protein with Ance and Acer. We show for the first time that Ance and Acer genes are differentially regulated and dependent on diet and age in adult flies. At the molecular level, Ance and Acer proteins exhibit the potential to bind to the Spike protein in different regions, as shown by a molecular docking approach. Acer, in particular, interacts with the Spike protein in the same region as in humans. Overall, we suggest that the D. melanogaster is a promising animal model for translational studies on COVID-19 associated risk factors and ACE2.
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Affiliation(s)
- Tâmie Duarte
- Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Mônica de Medeiros Silva
- Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Paula Michelotti
- Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Nilda Berenice de Vargas Barbosa
- Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Bruno César Feltes
- Institute of Informatics, Federal University of Rio Grande do Sul, 9500 Bento Gonçalves Avenue, Porto Alegre, RS 91501-970, Brazil; Institute of Biosciences, Federal University of Rio Grande do Sul, 9500 Bento Gonçalves Avenue, Porto Alegre, RS 91501-970, Brazil
| | - Márcio Dorn
- Institute of Informatics, Federal University of Rio Grande do Sul, 9500 Bento Gonçalves Avenue, Porto Alegre, RS 91501-970, Brazil; Center of Biotechnology, Federal University of Rio Grande do Sul, 9500 Bento Gonçalves Avenue, Porto Alegre, RS 91501-970, Brazil; National Institute of Science and Technology - Forensic Science, 6681 Ipiranga Avenue, Porto Alegre, RS 90619-900, Brazil
| | - João Batista Teixeira da Rocha
- Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil
| | - Cristiane Lenz Dalla Corte
- Department of Biochemistry and Molecular Biology, Natural and Exact Sciences Center, Federal University of Santa Maria, 1000 Roraima Avenue, Santa Maria, RS 97105-900, Brazil.
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Eickelberg V, Lüersen K, Staats S, Rimbach G. Phenotyping of Drosophila Melanogaster-A Nutritional Perspective. Biomolecules 2022; 12:221. [PMID: 35204721 PMCID: PMC8961528 DOI: 10.3390/biom12020221] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/15/2022] [Accepted: 01/20/2022] [Indexed: 02/01/2023] Open
Abstract
The model organism Drosophila melanogaster was increasingly applied in nutrition research in recent years. A range of methods are available for the phenotyping of D. melanogaster, which are outlined in the first part of this review. The methods include determinations of body weight, body composition, food intake, lifespan, locomotor activity, reproductive capacity and stress tolerance. In the second part, the practical application of the phenotyping of flies is demonstrated via a discussion of obese phenotypes in response to high-sugar diet (HSD) and high-fat diet (HFD) feeding. HSD feeding and HFD feeding are dietary interventions that lead to an increase in fat storage and affect carbohydrate-insulin homeostasis, lifespan, locomotor activity, reproductive capacity and stress tolerance. Furthermore, studies regarding the impacts of HSD and HFD on the transcriptome and metabolome of D. melanogaster are important for relating phenotypic changes to underlying molecular mechanisms. Overall, D. melanogaster was demonstrated to be a valuable model organism with which to examine the pathogeneses and underlying molecular mechanisms of common chronic metabolic diseases in a nutritional context.
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Affiliation(s)
- Virginia Eickelberg
- Department of Food Science, Institute of Human Nutrition and Food Science, University of Kiel, Hermann-Rodewald-Strasse 6-8, D-24118 Kiel, Germany; (K.L.); (S.S.); (G.R.)
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Wen DT, Zheng L, Lu K, Hou WQ. Activation of cardiac Nmnat/NAD+/SIR2 pathways mediates endurance exercise resistance to lipotoxic cardiomyopathy in aging Drosophila. J Exp Biol 2021; 224:272180. [PMID: 34495320 DOI: 10.1242/jeb.242425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 08/19/2021] [Indexed: 12/26/2022]
Abstract
Endurance exercise is an important way to resist and treat high-fat diet (HFD)-induced lipotoxic cardiomyopathy, but the underlying molecular mechanisms are poorly understood. Here, we used Drosophila to identify whether cardiac Nmnat/NAD+/SIR2 pathway activation mediates endurance exercise-induced resistance to lipotoxic cardiomyopathy. The results showed that endurance exercise activated the cardiac Nmnat/NAD+/SIR2/FOXO pathway and the Nmnat/NAD+/SIR2/PGC-1α pathway, including up-regulating cardiac Nmnat, SIR2, FOXO and PGC-1α expression, superoxide dismutase (SOD) activity and NAD+ levels, and it prevented HFD-induced or cardiac Nmnat knockdown-induced cardiac lipid accumulation, malondialdehyde (MDA) content and fibrillation increase, and fractional shortening decrease. Cardiac Nmnat overexpression also activated heart Nmnat/NAD+/SIR2 pathways and resisted HFD-induced cardiac malfunction, but it could not protect against HFD-induced lifespan reduction and locomotor impairment. Exercise improved lifespan and mobility in cardiac Nmnat knockdown flies. Therefore, the current results confirm that cardiac Nmnat/NAD+/SIR2 pathways are important antagonists of HFD-induced lipotoxic cardiomyopathy. Cardiac Nmnat/NAD+/SIR2 pathway activation is an important underlying molecular mechanism by which endurance exercise and cardiac Nmnat overexpression give protection against lipotoxic cardiomyopathy in Drosophila.
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Affiliation(s)
- Deng-Tai Wen
- Ludong University, City Yantai 264025, Shandong Province, China
| | - Lan Zheng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Chang Sha 410012, Hunan Province, China
| | - Kai Lu
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Chang Sha 410012, Hunan Province, China
| | - Wen-Qi Hou
- Ludong University, City Yantai 264025, Shandong Province, China
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Ding M, Zheng L, Li QF, Wang WL, Peng WD, Zhou M. Exercise-Training Regulates Apolipoprotein B in Drosophila to Improve HFD-Mediated Cardiac Function Damage and Low Exercise Capacity. Front Physiol 2021; 12:650959. [PMID: 34305631 PMCID: PMC8294119 DOI: 10.3389/fphys.2021.650959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 05/21/2021] [Indexed: 12/02/2022] Open
Abstract
Apolipoprotein B plays an essential role in systemic lipid metabolism, and it is closely related to cardiovascular diseases. Exercise-training can regulate systemic lipid metabolism, improve heart function, and improve exercise capacity, but the molecular mechanisms involved are poorly understood. We used a Drosophila model to demonstrate that exercise-training regulates the expression of apoLpp (a homolog of apolipoprotein B) in cardiomyocytes, thereby resisting heart insufficiency and low exercise capacity caused by obesity. The apoLpp is an essential lipid carrier produced in the heart and fat body of Drosophila. In a Drosophila genetic screen, low expression of apoLpp reduced obesity and cardiac dysfunction induced by a high-fat diet (HFD). Cardiac-specific inhibition indicated that reducing apoLpp in the heart during HFD reduced the triglyceride content of the whole-body and reduced heart function damage caused by HFD. In exercise-trained flies, the result was similar to the knockdown effect of apoLpp. Therefore, the inhibition of apoLpp plays an important role in HFD-induced cardiac function impairment and low exercise capacity. Although the apoLpp knockdown of cardiomyocytes alleviated damage to heart function, it did not reduce the arrhythmia and low exercise capacity caused by HFD. Exercise-training can improve this condition more effectively, and the possible reason for this difference is that exercise-training regulates climbing ability in ways to promote metabolism. Exercise-training during HFD feeding can down-regulate the expression of apoLpp, reduce the whole-body TG levels, improve cardiac recovery, and improve exercise capacity. Exercise-training can downregulate the expression of apoLpp in cardiomyocytes to resist cardiac function damage and low exercise capacity caused by HFD. The results revealed the relationship between exercise-training and apoLpp and their essential roles in regulating heart function and climbing ability.
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Affiliation(s)
- Meng Ding
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha, China
| | - Lan Zheng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha, China
| | - Qiu Fang Li
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha, China
| | - Wan Li Wang
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha, China
| | - Wan Da Peng
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha, China
| | - Meng Zhou
- Key Laboratory of Physical Fitness and Exercise Rehabilitation of Hunan Province, Hunan Normal University, Changsha, China
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Wen DT, Wang WQ, Hou WQ, Cai SX, Zhai SS. Endurance exercise protects aging Drosophila from high-salt diet (HSD)-induced climbing capacity decline and lifespan decrease by enhancing antioxidant capacity. Biol Open 2020; 9:bio045260. [PMID: 32414766 PMCID: PMC7272356 DOI: 10.1242/bio.045260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 04/20/2020] [Indexed: 01/19/2023] Open
Abstract
A high-salt diet (HSD) is a major cause of many chronic and age-related defects such as myocardial hypertrophy, locomotor impairment and mortality. Exercise training can efficiently prevent and treat many chronic and age-related diseases. However, it remains unclear whether endurance exercise can resist HSD-induced impairment of climbing capacity and longevity in aging individuals. In our study, flies were given exercise training and fed a HSD from 1-week old to 5-weeks old. Overexpression or knockdown of salt and dFOXO were built by UAS/Gal4 system. The results showed that a HSD, salt gene overexpression and dFOXO knockdown significantly reduced climbing endurance, climbing index, survival, dFOXO expression and SOD activity level, and increased malondialdehyde level in aging flies. Inversely, in a HSD aging flies, endurance exercise and dFOXO overexpression significantly increased their climbing ability, lifespan and antioxidant capacity, but they did not significantly change the salt gene expression. Overall, current results indicated that a HSD accelerated the age-related decline of climbing capacity and mortality via upregulating salt expression and inhibiting the dFOXO/SOD pathway. Increased dFOXO/SOD pathway activity played a key role in mediating endurance exercise resistance to the low salt tolerance-induced impairment of climbing capacity and longevity in aging DrosophilaThis article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Deng-Tai Wen
- Department of Physical Education, Ludong University, City Yantai 264025, Shan Dong Province, China
| | - Wei-Qing Wang
- Department of Physical Education, Ludong University, City Yantai 264025, Shan Dong Province, China
| | - Wen-Qi Hou
- Department of Physical Education, Ludong University, City Yantai 264025, Shan Dong Province, China
| | - Shu-Xian Cai
- Co-Innovation Center for Utilization of Botanical Functional Ingredients, Department of Agronomy, Hunan Agricultural University, Changsha, 410128, China
| | - Shuai-Shuai Zhai
- Department of Physical Education, Ludong University, City Yantai 264025, Shan Dong Province, China
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Liao S, Post S, Lehmann P, Veenstra JA, Tatar M, Nässel DR. Regulatory Roles of Drosophila Insulin-Like Peptide 1 (DILP1) in Metabolism Differ in Pupal and Adult Stages. Front Endocrinol (Lausanne) 2020; 11:180. [PMID: 32373064 PMCID: PMC7186318 DOI: 10.3389/fendo.2020.00180] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 03/13/2020] [Indexed: 01/12/2023] Open
Abstract
The insulin/IGF-signaling pathway is central in control of nutrient-dependent growth during development, and in adult physiology and longevity. Eight insulin-like peptides (DILP1-8) have been identified in Drosophila, and several of these are known to regulate growth, metabolism, reproduction, stress responses, and lifespan. However, the functional role of DILP1 is far from understood. Previous work has shown that dilp1/DILP1 is transiently expressed mainly during the pupal stage and the first days of adult life. Here, we study the role of dilp1 in the pupa, as well as in the first week of adult life, and make some comparisons to dilp6 that displays a similar pupal expression profile, but is expressed in fat body rather than brain neurosecretory cells. We show that mutation of dilp1 diminishes organismal weight during pupal development, whereas overexpression increases it, similar to dilp6 manipulations. No growth effects of dilp1 or dilp6 manipulations were detected during larval development. We next show that dilp1 and dilp6 increase metabolic rate in the late pupa and promote lipids as the primary source of catabolic energy. Effects of dilp1 manipulations can also be seen in the adult fly. In newly eclosed female flies, survival during starvation is strongly diminished in dilp1 mutants, but not in dilp2 and dilp1/dilp2 mutants, whereas in older flies, only the double mutants display reduced starvation resistance. Starvation resistance is not affected in male dilp1 mutant flies, suggesting a sex dimorphism in dilp1 function. Overexpression of dilp1 also decreases survival during starvation in female flies and increases egg laying and decreases egg to pupal viability. In conclusion, dilp1 and dilp6 overexpression promotes metabolism and growth of adult tissues during the pupal stage, likely by utilization of stored lipids. Some of the effects of the dilp1 manipulations may carry over from the pupa to affect physiology in young adults, but our data also suggest that dilp1 signaling is important in metabolism and stress resistance in the adult stage.
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Affiliation(s)
- Sifang Liao
- Department of Zoology, Stockholm University, Stockholm, Sweden
| | - Stephanie Post
- Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, United States
| | - Philipp Lehmann
- Department of Zoology, Stockholm University, Stockholm, Sweden
| | - Jan A. Veenstra
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (CNRS UMR5287), University of Bordeaux, Pessac, France
| | - Marc Tatar
- Department of Ecology and Evolutionary Biology, Brown University, Providence, RI, United States
| | - Dick R. Nässel
- Department of Zoology, Stockholm University, Stockholm, Sweden
- *Correspondence: Dick R. Nässel
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Guida MC, Birse RT, Dall'Agnese A, Toto PC, Diop SB, Mai A, Adams PD, Puri PL, Bodmer R. Intergenerational inheritance of high fat diet-induced cardiac lipotoxicity in Drosophila. Nat Commun 2019; 10:193. [PMID: 30643137 PMCID: PMC6331650 DOI: 10.1038/s41467-018-08128-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 12/17/2018] [Indexed: 12/26/2022] Open
Abstract
Obesity is strongly correlated with lipotoxic cardiomyopathy, heart failure and thus mortality. The incidence of obesity has reached alarming proportions worldwide, and increasing evidence suggests that the parents' nutritional status may predispose their offspring to lipotoxic cardiomyopathy. However, to date, mechanisms underlying intergenerational heart disease risks have yet to be elucidated. Here we report that cardiac dysfunction induced by high-fat-diet (HFD) persists for two subsequent generations in Drosophila and is associated with reduced expression of two key metabolic regulators, adipose triglyceride lipase (ATGL/bmm) and transcriptional cofactor PGC-1. We provide evidence that targeted expression of ATGL/bmm in the offspring of HFD-fed parents protects them, and the subsequent generation, from cardio-lipotoxicity. Furthermore, we find that intergenerational inheritance of lipotoxic cardiomyopathy correlates with elevated systemic H3K27 trimethylation. Lowering H3K27 trimethylation genetically or pharmacologically in the offspring of HFD-fed parents prevents cardiac pathology. This suggests that metabolic homeostasis is epigenetically regulated across generations.
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Affiliation(s)
- Maria Clara Guida
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Ryan Tyge Birse
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA
- Biocompatibles Inc., 300 Four Falls Corporate Center, 300 Conshohocken State Road, West Conshohocken, PA, 19428-2998, USA
| | - Alessandra Dall'Agnese
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA, 02142, USA
| | - Paula Coutinho Toto
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Soda Balla Diop
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | | | - Peter D Adams
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Pier Lorenzo Puri
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA
- IRCCS Fondazione Santa Lucia, 00142, Rome, Italy
| | - Rolf Bodmer
- Development, Aging and Regeneration Program, Sanford-Burnham-Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA, 92037, USA.
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