1
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Blank HM, Hammer SE, Boatright L, Roberts C, Heyden KE, Nagarajan A, Tsuchiya M, Brun M, Johnson CD, Stover PJ, Sitcheran R, Kennedy BK, Adams LG, Kaeberlein M, Field MS, Threadgill DW, Andrews-Polymenis HL, Polymenis M. Late-life dietary folate restriction reduces biosynthesis without compromising healthspan in mice. Life Sci Alliance 2024; 7:e202402868. [PMID: 39043420 PMCID: PMC11266815 DOI: 10.26508/lsa.202402868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 06/29/2024] [Accepted: 07/01/2024] [Indexed: 07/25/2024] Open
Abstract
Folate is a vitamin required for cell growth and is present in fortified foods in the form of folic acid to prevent congenital abnormalities. The impact of low-folate status on life-long health is poorly understood. We found that limiting folate levels with the folate antagonist methotrexate increased the lifespan of yeast and worms. We then restricted folate intake in aged mice and measured various health metrics, metabolites, and gene expression signatures. Limiting folate intake decreased anabolic biosynthetic processes in mice and enhanced metabolic plasticity. Despite reduced serum folate levels in mice with limited folic acid intake, these animals maintained their weight and adiposity late in life, and we did not observe adverse health outcomes. These results argue that the effectiveness of folate dietary interventions may vary depending on an individual's age and sex. A higher folate intake is advantageous during the early stages of life to support cell divisions needed for proper development. However, a lower folate intake later in life may result in healthier aging.
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Affiliation(s)
- Heidi M Blank
- https://ror.org/01f5ytq51 Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
| | - Staci E Hammer
- https://ror.org/01f5ytq51 Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
| | - Laurel Boatright
- https://ror.org/01f5ytq51 Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA
| | - Courtney Roberts
- https://ror.org/01f5ytq51 Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
| | - Katarina E Heyden
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - Aravindh Nagarajan
- https://ror.org/01f5ytq51 Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA
- https://ror.org/01f5ytq51 Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX, USA
| | - Mitsuhiro Tsuchiya
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Marcel Brun
- Texas A&M Agrilife Research, Genomics and Bioinformatics Service, College Station, TX, USA
| | - Charles D Johnson
- Texas A&M Agrilife Research, Genomics and Bioinformatics Service, College Station, TX, USA
| | - Patrick J Stover
- https://ror.org/01f5ytq51 Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Institute for Advancing Health Through Agriculture, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Department of Nutrition, Texas A&M University, College Station, TX, USA
| | - Raquel Sitcheran
- https://ror.org/01f5ytq51 Department of Cell Biology and Genetics, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA
| | - Brian K Kennedy
- Departments of Biochemistry and Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - L Garry Adams
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M, College Station, TX, USA
| | - Matt Kaeberlein
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
- Optispan, Inc., Seattle, WA, USA
| | - Martha S Field
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - David W Threadgill
- https://ror.org/01f5ytq51 Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Department of Nutrition, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX, USA
| | - Helene L Andrews-Polymenis
- https://ror.org/01f5ytq51 Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA
- https://ror.org/01f5ytq51 Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX, USA
| | - Michael Polymenis
- https://ror.org/01f5ytq51 Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Interdisciplinary Program in Genetics, Texas A&M University, College Station, TX, USA
- https://ror.org/01f5ytq51 Institute for Advancing Health Through Agriculture, Texas A&M University, College Station, TX, USA
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2
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Lamming DW. Quantification of healthspan in aging mice: introducing FAMY and GRAIL. GeroScience 2024; 46:4203-4215. [PMID: 38755467 PMCID: PMC11336093 DOI: 10.1007/s11357-024-01200-5] [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: 04/24/2024] [Accepted: 05/08/2024] [Indexed: 05/18/2024] Open
Abstract
The population around the world is graying, and as many of these individuals will spend years suffering from the burdens of age associated diseases, understanding how to increase healthspan, defined as the period of life free from disease and disability, is an urgent priority of geroscience research. The lack of agreed-upon quantitative metrics for measuring healthspan in aging mice has slowed progress in identifying interventions that do not simply increase lifespan, but also healthspan. Here, we define FAMY (Frailty-Adjusted Mouse Years) and GRAIL (Gauging Robust Aging when Increasing Lifespan) as new summary statistics for quantifying healthspan in mice. FAMY integrates lifespan data with longitudinal measurements of a widely utilized clinical frailty index, while GRAIL incorporates these measures and also adds information from widely utilized healthspan assays and the hallmarks of aging. Both metrics are conceptually similar to quality-adjusted life years (QALY), a widely utilized measure of disease burden in humans, and can be readily calculated from data acquired during longitudinal and cross-sectional studies of mouse aging. We find that interventions generally thought to promote health, including calorie restriction, robustly improve healthspan as measured by FAMY and GRAIL. Finally, we show that the use of GRAIL provides new insights, and identify dietary restriction of protein or isoleucine as interventions that robustly promote healthspan but not longevity in female HET3 mice. We suggest that the routine integration of these measures into studies of aging in mice will allow the identification and development of interventions that promote healthy aging even in the absence of increased lifespan.
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Affiliation(s)
- Dudley W Lamming
- Department of Medicine, University of Wisconsin-Madison, 1685 Highland Ave, MFCB Rm 4147, Madison, WI, 53705, USA.
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3
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Luciano A, Robinson L, Garland G, Lyons B, Korstanje R, Di Francesco A, Churchill GA. Longitudinal fragility phenotyping contributes to the prediction of lifespan and age-associated morbidity in C57BL/6 and Diversity Outbred mice. GeroScience 2024; 46:4937-4954. [PMID: 38935230 DOI: 10.1007/s11357-024-01226-9] [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: 02/07/2024] [Accepted: 05/24/2024] [Indexed: 06/28/2024] Open
Abstract
Aging studies in mammalian models often depend on natural lifespan data as a primary outcome. Tools for lifespan prediction could accelerate these studies and reduce the need for veterinary intervention. Here, we leveraged large-scale longitudinal frailty and lifespan data on two genetically distinct mouse cohorts to evaluate noninvasive strategies to predict life expectancy in mice. We applied a modified frailty assessment, the Fragility Index, derived from existing frailty indices with additional deficits selected by veterinarians. We developed an ensemble machine learning classifier to predict imminent mortality (95% proportion of life lived [95PLL]). Our algorithm represented improvement over previous predictive criteria but fell short of the level of reliability that would be needed to make advanced prediction of lifespan and thus accelerate lifespan studies. Highly sensitive and specific frailty-based predictive endpoint criteria for aged mice remain elusive. While frailty-based prediction falls short as a surrogate for lifespan, it did demonstrate significant predictive power and as such must contain information that could be used to inform the conclusion of aging experiments. We propose a frailty-based measure of healthspan as an alternative target for aging research and demonstrate that lifespan and healthspan criteria reveal distinct aspects of aging in mice.
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4
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Weibel CJ, Dasari MR, Jansen DA, Gesquiere LR, Mututua RS, Warutere JK, Siodi LI, Alberts SC, Tung J, Archie EA. Using non-invasive behavioral and physiological data to measure biological age in wild baboons. GeroScience 2024; 46:4059-4074. [PMID: 38693466 PMCID: PMC11336142 DOI: 10.1007/s11357-024-01157-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 04/05/2024] [Indexed: 05/03/2024] Open
Abstract
Biological aging is near-ubiquitous in the animal kingdom, but its timing and pace vary between individuals and over lifespans. Prospective, individual-based studies of wild animals-especially non-human primates-help identify the social and environmental drivers of this variation by indicating the conditions and exposure windows that affect aging processes. However, measuring individual biological age in wild primates is challenging because several of the most promising methods require invasive sampling. Here, we leverage observational data on behavior and physiology, collected non-invasively from 319 wild female baboons across 2402 female-years of study, to develop a composite predictor of age: the non-invasive physiology and behavior (NPB) clock. We found that age predictions from the NPB clock explained 51% of the variation in females' known ages. Further, deviations from the clock's age predictions predicted female survival: females predicted to be older than their known ages had higher adult mortality. Finally, females who experienced harsh early-life conditions were predicted to be about 6 months older than those who grew up in more benign conditions. While the relationship between early adversity and NPB age is noisy, this estimate translates to a predicted 2-3 year reduction in mean adult lifespan in our model. A constraint of our clock is that it is tailored to data collection approaches implemented in our study population. However, many of the clock's components have analogs in other populations, suggesting that non-invasive data can provide broadly applicable insight into heterogeneity in biological age in natural populations.
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Affiliation(s)
- Chelsea J Weibel
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - Mauna R Dasari
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - David A Jansen
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | | | - Raphael S Mututua
- Amboseli Baboon Research Project, Amboseli National Park, Kajiado, Kenya
| | - J Kinyua Warutere
- Amboseli Baboon Research Project, Amboseli National Park, Kajiado, Kenya
| | - Long'ida I Siodi
- Amboseli Baboon Research Project, Amboseli National Park, Kajiado, Kenya
| | - Susan C Alberts
- Department of Biology, Duke University, Durham, NC, USA
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
- Duke University Population Research Institute, Duke University, Durham, NC, USA
| | - Jenny Tung
- Department of Biology, Duke University, Durham, NC, USA
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
- Duke University Population Research Institute, Duke University, Durham, NC, USA
- Department of Primate Behavior and Evolution, Max Planck Institute for Evolutionary Anthropology, 04103, Leipzig, Germany
- Canadian Institute for Advanced Research, Toronto, M5G 1M1, Canada
- Faculty of Life Sciences, Institute of Biology, Leipzig University, Leipzig, Germany
| | - Elizabeth A Archie
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA.
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5
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Bartolomucci A, Kane AE, Gaydosh L, Razzoli M, McCoy BM, Ehninger D, Chen BH, Howlett SE, Snyder-Mackler N. Animal Models Relevant for Geroscience: Current Trends and Future Perspectives in Biomarkers, and Measures of Biological Aging. J Gerontol A Biol Sci Med Sci 2024; 79:glae135. [PMID: 39126297 PMCID: PMC11316208 DOI: 10.1093/gerona/glae135] [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: 10/16/2023] [Indexed: 08/12/2024] Open
Abstract
For centuries, aging was considered inevitable and immutable. Geroscience provides the conceptual framework to shift this focus toward a new view that regards aging as an active biological process, and the biological age of an individual as a modifiable entity. Significant steps forward have been made toward the identification of biomarkers for and measures of biological age, yet knowledge gaps in geroscience are still numerous. Animal models of aging are the focus of this perspective, which discusses how experimental design can be optimized to inform and refine the development of translationally relevant measures and biomarkers of biological age. We provide recommendations to the field, including: the design of longitudinal studies in which subjects are deeply phenotyped via repeated multilevel behavioral/social/molecular assays; the need to consider sociobehavioral variables relevant for the species studied; and finally, the importance of assessing age of onset, severity of pathologies, and age-at-death. We highlight approaches to integrate biomarkers and measures of functional impairment using machine learning approaches designed to estimate biological age as well as to predict future health declines and mortality. We expect that advances in animal models of aging will be crucial for the future of translational geroscience but also for the next chapter of medicine.
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Affiliation(s)
- Alessandro Bartolomucci
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, Minnesota, USA
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Alice E Kane
- Institute for Systems Biology, Seattle, Washington, USA
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Lauren Gaydosh
- Department of Sociology, University of Texas at Austin, Austin, Texas, USA
| | - Maria Razzoli
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Brianah M McCoy
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
- Center for Evolution and Medicine, Arizona State University, Tempe, Arizona, USA
| | - Dan Ehninger
- German Center for Neurodegenerative Diseases, Bonn, Germany
| | - Brian H Chen
- California Pacific Medical Center Research Institute, Sutter Health, San Francisco, CA, 94143, USA
| | - Susan E Howlett
- Departments of Pharmacology and Medicine (Geriatric Medicine), Dalhousie University, Halifax, Nova Scotia, Canada
| | - Noah Snyder-Mackler
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
- Center for Evolution and Medicine, Arizona State University, Tempe, Arizona, USA
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6
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Hofer SJ, Daskalaki I, Bergmann M, Friščić J, Zimmermann A, Mueller MI, Abdellatif M, Nicastro R, Masser S, Durand S, Nartey A, Waltenstorfer M, Enzenhofer S, Faimann I, Gschiel V, Bajaj T, Niemeyer C, Gkikas I, Pein L, Cerrato G, Pan H, Liang Y, Tadic J, Jerkovic A, Aprahamian F, Robbins CE, Nirmalathasan N, Habisch H, Annerer E, Dethloff F, Stumpe M, Grundler F, Wilhelmi de Toledo F, Heinz DE, Koppold DA, Rajput Khokhar A, Michalsen A, Tripolt NJ, Sourij H, Pieber TR, de Cabo R, McCormick MA, Magnes C, Kepp O, Dengjel J, Sigrist SJ, Gassen NC, Sedej S, Madl T, De Virgilio C, Stelzl U, Hoffmann MH, Eisenberg T, Tavernarakis N, Kroemer G, Madeo F. Spermidine is essential for fasting-mediated autophagy and longevity. Nat Cell Biol 2024:10.1038/s41556-024-01468-x. [PMID: 39117797 DOI: 10.1038/s41556-024-01468-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 07/02/2024] [Indexed: 08/10/2024]
Abstract
Caloric restriction and intermittent fasting prolong the lifespan and healthspan of model organisms and improve human health. The natural polyamine spermidine has been similarly linked to autophagy enhancement, geroprotection and reduced incidence of cardiovascular and neurodegenerative diseases across species borders. Here, we asked whether the cellular and physiological consequences of caloric restriction and fasting depend on polyamine metabolism. We report that spermidine levels increased upon distinct regimens of fasting or caloric restriction in yeast, flies, mice and human volunteers. Genetic or pharmacological blockade of endogenous spermidine synthesis reduced fasting-induced autophagy in yeast, nematodes and human cells. Furthermore, perturbing the polyamine pathway in vivo abrogated the lifespan- and healthspan-extending effects, as well as the cardioprotective and anti-arthritic consequences of fasting. Mechanistically, spermidine mediated these effects via autophagy induction and hypusination of the translation regulator eIF5A. In summary, the polyamine-hypusination axis emerges as a phylogenetically conserved metabolic control hub for fasting-mediated autophagy enhancement and longevity.
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Affiliation(s)
- Sebastian J Hofer
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
| | - Ioanna Daskalaki
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology - Hellas, Heraklion, Greece
- Department of Biology, School of Sciences and Engineering, University of Crete, Heraklion, Greece
| | - Martina Bergmann
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Jasna Friščić
- Department of Dermatology, Allergy and Venerology, University of Lübeck, Lübeck, Germany
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Andreas Zimmermann
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Melanie I Mueller
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Mahmoud Abdellatif
- BioTechMed Graz, Graz, Austria
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
- Division of Cardiology, Medical University of Graz, Graz, Austria
| | - Raffaele Nicastro
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Sarah Masser
- BioTechMed Graz, Graz, Austria
- Institute of Pharmaceutical Sciences, Pharmaceutical Chemistry, University of Graz, Graz, Austria
| | - Sylvère Durand
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
| | - Alexander Nartey
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Mara Waltenstorfer
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Sarah Enzenhofer
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Isabella Faimann
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Verena Gschiel
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Thomas Bajaj
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Hospital Bonn, Bonn, Germany
| | - Christine Niemeyer
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Hospital Bonn, Bonn, Germany
| | - Ilias Gkikas
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology - Hellas, Heraklion, Greece
- Department of Biology, School of Sciences and Engineering, University of Crete, Heraklion, Greece
| | - Lukas Pein
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Giulia Cerrato
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
| | - Hui Pan
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
| | - YongTian Liang
- Institute for Biology and Genetics, Freie Universität Berlin, Berlin, Germany
- Cluster of Excellence, NeuroCure, Berlin, Germany
| | - Jelena Tadic
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Andrea Jerkovic
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Fanny Aprahamian
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
| | - Christine E Robbins
- Department of Biochemistry and Molecular Biology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Nitharsshini Nirmalathasan
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
| | - Hansjörg Habisch
- Research Unit Integrative Structural Biology, Otto Loewi Research Center, Medicinal Chemistry, Medical University of Graz, Graz, Austria
| | - Elisabeth Annerer
- Institute of Pharmaceutical Sciences, Pharmaceutical Chemistry, University of Graz, Graz, Austria
| | | | - Michael Stumpe
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | | | | | - Daniel E Heinz
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Hospital Bonn, Bonn, Germany
| | - Daniela A Koppold
- Institute of Social Medicine, Epidemiology and Health Economics, corporate member of Freie Universität Berlin and Humboldt-Universität, Charité-Universitätsmedizin, Berlin, Germany
- Department of Pediatrics, Division of Oncology and Hematology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Department of Internal Medicine and Nature-based Therapies, Immanuel Hospital Berlin, Berlin, Germany
| | - Anika Rajput Khokhar
- Institute of Social Medicine, Epidemiology and Health Economics, corporate member of Freie Universität Berlin and Humboldt-Universität, Charité-Universitätsmedizin, Berlin, Germany
- Department of Dermatology, Venereology and Allergology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Andreas Michalsen
- Institute of Social Medicine, Epidemiology and Health Economics, corporate member of Freie Universität Berlin and Humboldt-Universität, Charité-Universitätsmedizin, Berlin, Germany
- Department of Internal Medicine and Nature-based Therapies, Immanuel Hospital Berlin, Berlin, Germany
| | - Norbert J Tripolt
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Harald Sourij
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Thomas R Pieber
- BioTechMed Graz, Graz, Austria
- Interdisciplinary Metabolic Medicine Trials Unit, Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- HEALTH - Institute for Biomedical Research and Technologies, Joanneum Research Forschungsgesellschaft, Graz, Austria
| | - Rafael de Cabo
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Mark A McCormick
- Department of Biochemistry and Molecular Biology, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Christoph Magnes
- HEALTH - Institute for Biomedical Research and Technologies, Joanneum Research Forschungsgesellschaft, Graz, Austria
| | - Oliver Kepp
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France
| | - Joern Dengjel
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Stephan J Sigrist
- Institute for Biology and Genetics, Freie Universität Berlin, Berlin, Germany
- Cluster of Excellence, NeuroCure, Berlin, Germany
| | - Nils C Gassen
- Neurohomeostasis Research Group, Department of Psychiatry and Psychotherapy, University Hospital Bonn, Bonn, Germany
| | - Simon Sedej
- BioTechMed Graz, Graz, Austria
- Division of Cardiology, Medical University of Graz, Graz, Austria
- Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia
| | - Tobias Madl
- BioTechMed Graz, Graz, Austria
- Research Unit Integrative Structural Biology, Otto Loewi Research Center, Medicinal Chemistry, Medical University of Graz, Graz, Austria
| | | | - Ulrich Stelzl
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
- Institute of Pharmaceutical Sciences, Pharmaceutical Chemistry, University of Graz, Graz, Austria
| | - Markus H Hoffmann
- Department of Dermatology, Allergy and Venerology, University of Lübeck, Lübeck, Germany
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Tobias Eisenberg
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
- Field of Excellence BioHealth, University of Graz, Graz, Austria
- BioTechMed Graz, Graz, Austria
| | - Nektarios Tavernarakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology - Hellas, Heraklion, Greece.
- Division of Basic Sciences, School of Medicine, University of Crete, Heraklion, Greece.
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, Équipe Labellisée par la Ligue Contre le Cancer, Université de Paris Cité, Sorbonne Université, Inserm U1138, Institut Universitaire de France, Paris, France.
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Center, Université Paris Saclay, Villejuif, France.
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, AP-HP, Paris, France.
| | - Frank Madeo
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria.
- Field of Excellence BioHealth, University of Graz, Graz, Austria.
- BioTechMed Graz, Graz, Austria.
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7
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Wang B, Wang L, Gasek NS, Kuo CL, Nie J, Kim T, Yan P, Zhu J, Torrance BL, Zhou Y, Flores LC, Allen C, Andrade AM, Guo C, Cohn RL, Jellison ER, Bartley JM, Kuchel GA, Li S, Pirtskhalava T, Tchkonia T, Yadav S, Haynes L, Kirkland JL, Ikeno Y, Xu M. Intermittent clearance of p21-highly-expressing cells extends lifespan and confers sustained benefits to health and physical function. Cell Metab 2024; 36:1795-1805.e6. [PMID: 39111286 PMCID: PMC11315361 DOI: 10.1016/j.cmet.2024.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/18/2024] [Accepted: 07/08/2024] [Indexed: 08/11/2024]
Abstract
A key challenge in aging research is extending lifespan in tandem with slowing down functional decline so that life with good health (healthspan) can be extended. Here, we show that monthly clearance, starting from 20 months, of a small number of cells that highly express p21Cip1 (p21high) improves cardiac and metabolic function and extends both median and maximum lifespans in mice. Importantly, by assessing the health and physical function of these mice monthly until death, we show that clearance of p21high cells improves physical function at all remaining stages of life, suggesting healthspan extension. Mechanistically, p21high cells encompass several cell types with a relatively conserved proinflammatory signature. Clearance of p21high cells reduces inflammation and alleviates age-related transcriptomic signatures of various tissues. These findings demonstrate the feasibility of healthspan extension in mice and indicate p21high cells as a therapeutic target for healthy aging.
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Affiliation(s)
- Binsheng Wang
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA
| | - Lichao Wang
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA
| | - Nathan S Gasek
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA
| | - Chia-Ling Kuo
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Public Health Sciences, UConn Health, Farmington, CT 06030, USA
| | - Jia Nie
- Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Taewan Kim
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA
| | - Pengyi Yan
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA
| | - Junyu Zhu
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA
| | - Blake L Torrance
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Immunology, UConn Health, Farmington, CT 06030, USA
| | - Yueying Zhou
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Xiangya Stomatological Hospital, Central South University, Changsha, China
| | - Lisa C Flores
- Sam and Ann Barshop Institute for Longevity and Aging Studies and Department of Pathology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Colton Allen
- Sam and Ann Barshop Institute for Longevity and Aging Studies and Department of Pathology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | | | - Chun Guo
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA
| | - Rachel L Cohn
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA
| | - Evan R Jellison
- Department of Immunology, UConn Health, Farmington, CT 06030, USA
| | - Jenna M Bartley
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Immunology, UConn Health, Farmington, CT 06030, USA
| | - George A Kuchel
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA
| | - Sheng Li
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06030, USA
| | - Tamar Pirtskhalava
- Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Center for Advanced Gerotherapeutics, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Tamar Tchkonia
- Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Center for Advanced Gerotherapeutics, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Sumit Yadav
- Department of Growth and Development, UNMC College of Dentistry, Omaha, NE 68114, USA; Children's of Omaha - Children's Hospital, Omaha, NE 68114, USA
| | - Laura Haynes
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Immunology, UConn Health, Farmington, CT 06030, USA
| | - James L Kirkland
- Division of Endocrinology, Diabetes and Metabolism, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Center for Advanced Gerotherapeutics, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Division of General Internal Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Yuji Ikeno
- Sam and Ann Barshop Institute for Longevity and Aging Studies and Department of Pathology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA; Geriatric Research Education and Clinical Center (GRECC), Audie L. Murphy VA Hospital, South Texas Veterans Health Care System, San Antonio, TX 78229, USA
| | - Ming Xu
- UConn Center on Aging, UConn Health, Farmington, CT 06030, USA; Department of Genetics and Genome Sciences, UConn Health, Farmington, CT 06030, USA.
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8
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Rose RA, Howlett SE. Preclinical Studies on the Effects of Frailty in the Aging Heart. Can J Cardiol 2024; 40:1379-1393. [PMID: 38460611 DOI: 10.1016/j.cjca.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/20/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024] Open
Abstract
Age is a major risk factor for the development of cardiovascular diseases in men and in women. However, not all people age at the same rate and those who are aging rapidly are considered frail, compared with their fit counterparts. Frailty is an important clinical challenge because those who are frail are more likely to develop and die from illnesses, including cardiovascular diseases, than fit people of the same age. This increase in susceptibility to cardiovascular diseases in older individuals might occur as the cellular and molecular mechanisms involved in the aging process facilitate structural and functional damage in the heart. Consistent with this, recent studies in murine frailty models have provided strong evidence that maladaptive cardiac remodelling in older mice is the most pronounced in mice with a high level of frailty. For example, there is evidence that ventricular hypertrophy and contractile dysfunction increase as frailty increases in aging mice. Additionally, fibrosis and slowing of conduction in the sinoatrial node and atria are proportional to the level of frailty. These modifications could predispose frail older adults to diseases like heart failure and atrial fibrillation. This preclinical work also raises the possibility that emerging interventions designed to "treat frailty" might also treat or prevent cardiovascular diseases. These findings might help to explain why frail older people are most likely to develop these disorders as they age.
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Affiliation(s)
- Robert A Rose
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Physiology and Pharmacology, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
| | - Susan E Howlett
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Medicine (Geriatric Medicine), Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
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9
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Bisset ES, Howlett SE. Sex-specific effects of frailty on cardiac structure and function: insights from preclinical models. Can J Physiol Pharmacol 2024; 102:476-486. [PMID: 38489788 DOI: 10.1139/cjpp-2024-0009] [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] [Indexed: 03/17/2024]
Abstract
Advanced age is an independent risk factor for cardiovascular diseases in both sexes. This is thought to be due, in part, to age-dependent cellular, structural, and functional changes in the heart, a process known as cardiac aging. An emerging view is that cardiac aging leads to the accumulation of cellular and subcellular deficits that increase susceptibility to cardiovascular diseases. Still, people age at different rates, with those aging rapidly considered frail. Evidence suggests that frailty, rather than simply age, is a major risk factor for cardiovascular disease and predicts adverse outcomes in those affected. Recent studies in mouse models of frailty show that many adverse changes associated with cardiac aging are more prominent in mice with a high degree of frailty. This suggests that frailty sets the stage for late life cardiovascular diseases to flourish and raises the possibility that treating frailty may treat cardiovascular diseases. These studies show that ventricular dysfunction increases with frailty in males only, whereas atrial dysfunction increases with frailty in both sexes. These results may shed light on the reasons that men and women can be susceptible to different cardiovascular diseases as they age, and why frail individuals are especially vulnerable to these disorders.
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Affiliation(s)
- Elise S Bisset
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Susan E Howlett
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Medicine (Geriatric Medicine), Dalhousie University, Halifax, NS B3H 4R2, Canada
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10
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Gille B, Müller-Eigner A, Gottschalk S, Wytrwat E, Langhammer M, Peleg S. Titan mice as a model to test interventions that attenuate frailty and increase longevity. GeroScience 2024; 46:3599-3606. [PMID: 38177967 PMCID: PMC11226689 DOI: 10.1007/s11357-023-01045-4] [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: 09/20/2023] [Accepted: 12/11/2023] [Indexed: 01/06/2024] Open
Abstract
Wild-type murine models for aging research have lifespans of several years, which results in long experimental duration and late output. Here we explore the short-lived non-inbred Titan mouse (DU6) as a mouse model to test longevity interventions. We show that Titan mice exhibit increased frailty and senescence-associated beta-galactosidase activity at an early age. Dietary intervention attenuates the frailty progression of Titan mice. Additionally, cyclic administration of the senolytic drug Navitoclax at an early age increases the lifespan and reduces senescence-associated beta-galactosidase activity. Our data suggests that Titan mice can serve as a cost-effective and timely model for longevity interventions in mammals.
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Affiliation(s)
- Benedikt Gille
- Research Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Annika Müller-Eigner
- Research Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Shari Gottschalk
- Research Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Erika Wytrwat
- Research Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Martina Langhammer
- Research Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany
| | - Shahaf Peleg
- Research Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany.
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11
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Wahl D, Risen SJ, Osburn SC, Emge T, Sharma S, Gilberto VS, Chatterjee A, Nagpal P, Moreno JA, LaRocca TJ. Nanoligomers targeting NF-κB and NLRP3 reduce neuroinflammation and improve cognitive function with aging and tauopathy. J Neuroinflammation 2024; 21:182. [PMID: 39068433 PMCID: PMC11283709 DOI: 10.1186/s12974-024-03182-9] [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: 02/13/2024] [Accepted: 07/22/2024] [Indexed: 07/30/2024] Open
Abstract
Neuroinflammation contributes to impaired cognitive function in brain aging and neurodegenerative disorders like Alzheimer's disease, which is characterized by the aggregation of pathological tau. One major driver of both age- and tau-associated neuroinflammation is the NF-κB and NLRP3 signaling axis. However, current treatments targeting NF-κB or NLRP3 may have adverse/systemic effects, and most have not been clinically translatable. In this study, we tested the efficacy of a novel, nucleic acid therapeutic (Nanoligomer) cocktail specifically targeting both NF-κB and NLRP3 in the brain for reducing neuroinflammation and improving cognitive function in old (aged 19 months) wildtype mice, and in rTg4510 tau pathology mice (aged 2 months). We found that 4 weeks of NF-κB/NLRP3-targeting Nanoligomer treatment strongly reduced neuro-inflammatory cytokine profiles in the brain and improved cognitive-behavioral function in both old and rTg4510 mice. These effects of NF-κB/NLRP3-targeting Nanoligomers were also associated with reduced glial cell activation and pathology, favorable changes in transcriptome signatures of glia-associated inflammation (reduced) and neuronal health (increased), and positive systemic effects. Collectively, our results provide a basis for future translational studies targeting both NF-κB and NLRP3 in the brain, perhaps using Nanoligomers, to inhibit neuroinflammation and improve cognitive function with aging and neurodegeneration.
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Affiliation(s)
- Devin Wahl
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA
| | - Sydney J Risen
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
- Brain Research Center, Colorado State University, Fort Collins, CO, USA
| | - Shelby C Osburn
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA
| | - Tobias Emge
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA
| | - Sadhana Sharma
- Sachi Bio, Colorado Technology Center, Louisville, CO, USA
| | | | | | | | - Julie A Moreno
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
- Brain Research Center, Colorado State University, Fort Collins, CO, USA
| | - Thomas J LaRocca
- Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523, USA.
- Columbine Health Systems Center for Healthy Aging, Colorado State University, Fort Collins, CO, USA.
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12
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Mrabti C, Yang N, Desdín-Micó G, Alonso-Calleja A, Vílchez-Acosta A, Pico S, Parras A, Piao Y, Schoenfeldt L, Luo S, Haghani A, Brooke R, del Carmen Maza M, Branchina C, Maroun CY, von Meyenn F, Naveiras O, Horvath S, Sen P, Ocampo A. Loss of H3K9 trimethylation leads to premature aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.24.604929. [PMID: 39091811 PMCID: PMC11291141 DOI: 10.1101/2024.07.24.604929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
Aging is the major risk factor for most human diseases and represents a major socio-economical challenge for modern societies. Despite its importance, the process of aging remains poorly understood. Epigenetic dysregulation has been proposed as a key driver of the aging process. Modifications in transcriptional networks and chromatin structure might be central to age-related functional decline. A prevalent feature described during aging is the overall reduction in heterochromatin, specifically marked by the loss of repressive histone modification, Histone 3 lysine 9 trimethylation (H3K9me3). However, the role of H3K9me3 in aging, especially in mammals, remains unclear. Here we show using a novel mouse strain, (TKOc), carrying a triple knockout of three methyltransferases responsible for H3K9me3 deposition, that the inducible loss of H3K9me3 in adulthood results in premature aging. TKOc mice exhibit reduced lifespan, lower body weight, increased frailty index, multi-organ degeneration, transcriptional changes with significant upregulation of transposable elements, and accelerated epigenetic age. Our data strongly supports the concept that the loss of epigenetic information directly drives the aging process. These findings reveal the importance of epigenetic regulation in aging and suggest that interventions targeting epigenetic modifications could potentially slow down or reverse age-related decline. Understanding the molecular mechanisms underlying the process of aging will be crucial for developing novel therapeutic strategies that can delay the onset of age-associated diseases and preserve human health at old age specially in rapidly aging societies.
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Affiliation(s)
- Calida Mrabti
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | - Na Yang
- Laboratory of Genetics and Genomics, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Gabriela Desdín-Micó
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | - Alejandro Alonso-Calleja
- Laboratory of Regenerative Hematopoiesis, Department of Biomedical Sciences, University of Lausanne, Switzerland
- Laboratory of Metabolic Signaling, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Alba Vílchez-Acosta
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | - Sara Pico
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | | | - Yulan Piao
- Laboratory of Genetics and Genomics, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Lucas Schoenfeldt
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
- EPITERNA SA, Epalinges, Switzerland
| | - Siyuan Luo
- Departement of Health Sciences and Technology, ETH Zurich, Zurich
| | | | - Robert Brooke
- Epigenetic Clock Development, Foundation, Torrance, California, USA
| | - María del Carmen Maza
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | - Clémence Branchina
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | - Céline Yacoub Maroun
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
| | | | - Olaia Naveiras
- Laboratory of Genetics and Genomics, National Institute on Aging, NIH, Baltimore, MD 21224, USA
- Laboratory of Regenerative Hematopoiesis, Department of Biomedical Sciences, University of Lausanne, Switzerland
| | - Steve Horvath
- Altos Labs, San Diego, CA, USA
- Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Payel Sen
- Laboratory of Genetics and Genomics, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Alejandro Ocampo
- Department of Biomedical Sciences, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Vaud, Switzerland
- EPITERNA SA, Epalinges, Switzerland
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13
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Jansen HJ, McRae MD, Belke DD, Rose RA. Chronic angiotensin-converting enzyme inhibition attenuates frailty and protects against atrial fibrillation in aging mice. Heart Rhythm 2024:S1547-5271(24)02897-2. [PMID: 39019387 DOI: 10.1016/j.hrthm.2024.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 06/27/2024] [Accepted: 07/08/2024] [Indexed: 07/19/2024]
Abstract
BACKGROUND Aging is a major risk factor for atrial fibrillation (AF); however, not all individuals age at the same rate. Frailty, which is a measure of susceptibility to adverse health outcomes, can be quantified with a frailty index (FI). OBJECTIVE This study aimed to determine the effects of angiotensin-converting enzyme (ACE) inhibition on AF and atrial remodeling in aging and frail mice. METHODS Aging mice were treated with the ACE inhibitor enalapril for 6 months beginning at 16.5 months of age and frailty was quantified. AF susceptibility and atrial structure and function were assessed by intracardiac electrophysiology in anesthetized mice, high-resolution optical mapping in intact atrial preparations, patch clamping in isolated atrial myocytes, and histology and molecular biology in atrial tissues. RESULTS Enalapril attenuated frailty in aging mice with larger effects in females. AF susceptibility was increased in aging mice but attenuated by enalapril. AF susceptibility and duration also increased as a function of FI score. P-wave duration was increased and atrial conduction velocity was reduced in aging mice and improved after enalapril treatment. Furthermore, P-wave duration and atrial conduction velocity were strongly correlated with FI score. Atrial action potential upstroke velocity (Vmax) and Na+ current (INa) were reduced whereas atrial fibrosis was increased in aging mice. Action potential Vmax, INa, and fibrosis were improved by enalapril and also correlated with FI scores. CONCLUSION ACE inhibition with enalapril attenuates frailty and reduces AF susceptibility in aging mice by preventing atrial electrical and structural remodeling.
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Affiliation(s)
- Hailey J Jansen
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Megan D McRae
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Darrell D Belke
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Robert A Rose
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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14
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Collinge CW, Razzoli M, Mansk R, McGonigle S, Lamming DW, Pacak CA, van der Pluijm I, Niedernhofer L, Bartolomucci A. The mouse Social Frailty Index (mSFI): a novel behavioral assessment for impaired social functioning in aging mice. GeroScience 2024:10.1007/s11357-024-01263-4. [PMID: 38987495 DOI: 10.1007/s11357-024-01263-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 06/23/2024] [Indexed: 07/12/2024] Open
Abstract
Various approaches exist to quantify the aging process and estimate biological age on an individual level. Frailty indices based on an age-related accumulation of physical deficits have been developed for human use and translated into mouse models. However, declines observed in aging are not limited to physical functioning but also involve social capabilities. The concept of "social frailty" has been recently introduced into human literature, but no index of social frailty exists for laboratory mice yet. To fill this gap, we developed a mouse Social Frailty Index (mSFI) consisting of seven distinct assays designed to quantify social functioning which is relatively simple to execute and is minimally invasive. Application of the mSFI in group-housed male C57BL/6 mice demonstrated a progressively elevated levels of social frailty through the lifespan. Conversely, group-housed females C57BL/6 mice manifested social frailty only at a very old age. Female mice also showed significantly lower mSFI score from 10 months of age onward when compared to males. We also applied the mSFI in male C57BL/6 mice under chronic subordination stress and in chronic isolation, both of which induced larger increases in social frailty compared to age-matched group-housed males. Lastly, we show that the mSFI is enhanced in mouse models that show accelerated biological aging such as progeroid Ercc1-/Δ and Xpg-/- mice of both sexes compared to age matched littermate wild types. In summary, the mSFI represents a novel index to quantify trajectories of biological aging in mice and may help elucidate links between impaired social behavior and the aging process.
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Affiliation(s)
- Charles W Collinge
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Maria Razzoli
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Rachel Mansk
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Seth McGonigle
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Dudley W Lamming
- Department of Medicine, University of Wisconsin, Madison, WI, USA
- William S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Christina A Pacak
- Greg Marzolf Jr. Muscular Dystrophy Center & Department of Neurology, University of Minnesota, Minneapolis, MN, USA
| | - Ingrid van der Pluijm
- Department of Molecular Genetics, and Department of Vascular Surgery, Cardiovascular Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Laura Niedernhofer
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Alessandro Bartolomucci
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA.
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15
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Gendron WH, Fertan E, Roddick KM, Wong AA, Maliougina M, Hiani YE, Anini Y, Brown RE. Intranasal insulin treatment ameliorates spatial memory, muscular strength, and frailty deficits in 5xFAD mice. Physiol Behav 2024; 281:114583. [PMID: 38750806 DOI: 10.1016/j.physbeh.2024.114583] [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: 11/29/2023] [Revised: 05/11/2024] [Accepted: 05/13/2024] [Indexed: 05/19/2024]
Abstract
The 5xFAD mouse model shows age-related weight loss as well as cognitive and motor deficits. Metabolic dysregulation, especially impaired insulin signaling, is also present in AD. This study examined whether intranasal delivery of insulin (INI) at low (0.875 U) or high (1.750 U) doses would ameliorate these deficits compared to saline in 10-month-old female 5xFAD and B6SJL wildtype (WT) mice. INI increased forelimb grip strength in the wire hang test in 5xFAD mice in a dose-dependent manner but did not improve the performance of 5xFAD mice on the balance beam. High INI doses reduced frailty scores in 5xFAD mice and improved spatial memory in both acquisition and reversal probe trials in the Morris water maze. INI increased swim speed in 5xFAD mice but had no effect on object recognition memory or working memory in the spontaneous alternation task, nor did it improve memory in the contextual or cued fear memory tasks. High doses of insulin increased the liver, spleen, and kidney weights and reduced brown adipose tissue weights. P-Akt signaling in the hippocampus was increased by insulin in a dose-dependent manner. Altogether, INI increased strength, reduced frailty scores, and improved visual spatial memory. Hypoglycemia was not present after INI, however alterations in tissue and organ weights were present. These results are novel and important as they indicate that intra-nasal insulin can reverse cognitive, motor and frailty deficits found in this mouse model of AD.
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Affiliation(s)
- William H Gendron
- Departments of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Emre Fertan
- Departments of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Kyle M Roddick
- Departments of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Aimée A Wong
- Departments of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Maria Maliougina
- Departments of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Yassine El Hiani
- Departments of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Younes Anini
- Departments of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada; Departments of Obstetrics and Gynecology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Richard E Brown
- Departments of Psychology and Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada; Departments of Physiology and Biophysics, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
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16
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Chen P, Guo Z, Lei J, Wang Y. Pomegranate polyphenol punicalin ameliorates lipopolysaccharide-induced memory impairment, behavioral disorders, oxidative stress, and neuroinflammation via inhibition of TLR4-NF-кB pathway. Phytother Res 2024; 38:3489-3508. [PMID: 38695373 DOI: 10.1002/ptr.8219] [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: 12/15/2023] [Revised: 03/26/2024] [Accepted: 04/10/2024] [Indexed: 07/12/2024]
Abstract
Neuroinflammation may play an important role in the development of Alzheimer's disease (AD). Previous studies have reported that lipopolysaccharide (LPS)-induced neuroinflammation causes memory impairments and behavioral disorders. We investigated the potential preventive effects of punicalin (PUN), a polyphenolic component of pomegranate, on LPS-induced memory deficiency and anxiety- and depression-like behaviors, along with the underlying mechanisms. LPS-treated cultured microglial BV2 cells and BV2 cell/Neuro-2a (N2a) cell coculture system were investigated for anti-neuroinflammatory effects of PUN in vitro. The in vivo experiments involved mice administered a 4-week course of oral gavage with 1500 mg/kg/d PUN before intraperitoneal LPS (250 mg/kg daily 7 times) injections. The in vitro results demonstrated that PUN inhibited the LPS-induced inflammatory cytokine (IL-18, IL-1β, TNF-ɑ, and IL-6) production in BV2 cells and protected N2a cells from synaptic damage mediated by BV2 microglia-induced neuroinflammation. In in vivo studies, it was observed that PUN improved memory impairment and anxiety- and depression-like behaviors caused by LPS and reduced the expression of inflammatory proteins such as iNOS, COX-2, IL-1β, IL-2, IL-6, and TNF-α. Furthermore, PUN inhibited the LPS-induced production of MDA; increased the activities of CAT, SOD, and GSH-Px, and inhibited LPS-induced Aβ1-42 generation through down-regulation of APP and BACE1 expression. Moreover, PUN also suppressed the expression of TLR4, IRAK4, TRAF6, IKK-β, NF-κB, p65, and HMGB1 in LPS-treated mouse brain and cultured microglial BV-2 cells. These results suggest that PUN inhibits LPS-induced memory impairment via anti-inflammatory and anti-amylogenic mechanisms through inhibition of TLR4-NF-kB activation.
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Affiliation(s)
- Peng Chen
- Department of Pharmacy, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhilei Guo
- Department of Pharmacy, Wuhan Fourth Hospital, Wuhan, China
| | - Jiexin Lei
- Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, China
| | - Yulai Wang
- Department of Pharmacy, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Huangshi, China
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17
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Yılmaz D, Marques FC, Fischer Y, Zimmermann S, Hwang G, Atkins PR, Mathavan N, Singh A, de Souza PP, Kuhn GA, Wehrle E, Müller R. Elucidating the mechano-molecular dynamics of TRAP activity using CRISPR/Cas9 mediated fluorescent reporter mice. Heliyon 2024; 10:e32949. [PMID: 39021958 PMCID: PMC11252717 DOI: 10.1016/j.heliyon.2024.e32949] [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: 12/06/2023] [Revised: 05/22/2024] [Accepted: 06/12/2024] [Indexed: 07/20/2024] Open
Abstract
Osteoclasts are essential for bone remodeling by adapting their resorptive activity in response to their mechanical in vivo environment. However, the molecular mechanisms underlying this process remain unclear. Here, we demonstrated the role of tartrate-resistant acid phosphatase (TRAP, Acp5), a key enzyme secreted by osteoclasts, in bone remodeling and mechanosensitivity. Using CRISPR/Cas9 reporter mice, we demonstrated bone cell reporter (BCRIbsp/Acp5) mice feature fluorescent TRAP-deficient osteoclasts and examined their activity during mechanically driven trabecular bone remodeling. Although BCRIbsp/Acp5 mice exhibited trabecular bone impairments and reduced resorption capacity in vitro, RNA sequencing revealed unchanged levels of key osteoclast-associated genes such as Ctsk, Mmp9, and Calcr. These findings, in conjunction with serum carboxy-terminal collagen crosslinks (CTX) and in vivo mechanical loading outcomes collectively indicated an unaltered bone resorption capacity of osteoclasts in vivo. Furthermore, we demonstrated similar mechanoregulation during trabecular bone remodeling in BCRIbsp/Acp5 and wild-type (WT) mice. Hence, this study provides valuable insights into the dynamics of TRAP activity in the context of bone remodeling and mechanosensation.
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Affiliation(s)
- Dilara Yılmaz
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | | | | | | | - Gaonhae Hwang
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Penny R. Atkins
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
- Department of Orthopaedics, University of Utah, 590 Wakara Way, Salt Lake City, USA
| | | | - Amit Singh
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Pedro P.C. de Souza
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
- Innovation in Biomaterials Laboratory, School of Dentistry, Federal University of Goiás, Goiânia, Brazil
| | - Gisela A. Kuhn
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Esther Wehrle
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
- AO Research Institute Davos, Davos Platz, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
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18
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Kane AE, Chellappa K, Schultz MB, Arnold M, Li J, Amorim J, Diener C, Zhu D, Mitchell SJ, Griffin P, Tian X, Petty C, Conway R, Walsh K, Shelerud L, Duesing C, Mueller A, Li K, McNamara M, Shima RT, Mitchell J, Bonkowski MS, de Cabo R, Gibbons SM, Wu LE, Ikeno Y, Baur JA, Rajman L, Sinclair DA. Long-term NMN treatment increases lifespan and healthspan in mice in a sex dependent manner. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.21.599604. [PMID: 38979132 PMCID: PMC11230277 DOI: 10.1101/2024.06.21.599604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Nicotinamide adenine dinucleotide (NAD) is essential for many enzymatic reactions, including those involved in energy metabolism, DNA repair and the activity of sirtuins, a family of defensive deacylases. During aging, levels of NAD + can decrease by up to 50% in some tissues, the repletion of which provides a range of health benefits in both mice and humans. Whether or not the NAD + precursor nicotinamide mononucleotide (NMN) extends lifespan in mammals is not known. Here we investigate the effect of long-term administration of NMN on the health, cancer burden, frailty and lifespan of male and female mice. Without increasing tumor counts or severity in any tissue, NMN treatment of males and females increased activity, maintained more youthful gene expression patterns, and reduced overall frailty. Reduced frailty with NMN treatment was associated with increases in levels of Anerotruncus colihominis, a gut bacterium associated with lower inflammation in mice and increased longevity in humans. NMN slowed the accumulation of adipose tissue later in life and improved metabolic health in male but not female mice, while in females but not males, NMN increased median lifespan by 8.5%, possible due to sex-specific effects of NMN on NAD + metabolism. Together, these data show that chronic NMN treatment delays frailty, alters the microbiome, improves male metabolic health, and increases female mouse lifespan, without increasing cancer burden. These results highlight the potential of NAD + boosters for treating age-related conditions and the importance of using both sexes for interventional lifespan studies.
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19
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Brown RE. Measuring the replicability of our own research. J Neurosci Methods 2024; 406:110111. [PMID: 38521128 DOI: 10.1016/j.jneumeth.2024.110111] [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: 01/21/2024] [Revised: 03/08/2024] [Accepted: 03/18/2024] [Indexed: 03/25/2024]
Abstract
In the study of transgenic mouse models of neurodevelopmental and neurodegenerative disorders, we use batteries of tests to measure deficits in behaviour and from the results of these tests, we make inferences about the mental states of the mice that we interpret as deficits in "learning", "memory", "anxiety", "depression", etc. This paper discusses the problems of determining whether a particular transgenic mouse is a valid mouse model of disease X, the problem of background strains, and the question of whether our behavioural tests are measuring what we say they are. The problem of the reliability of results is then discussed: are they replicable between labs and can we replicate our results in our own lab? This involves the study of intra- and inter- experimenter reliability. The variables that influence replicability and the importance of conducting a complete behavioural phenotype: sensory, motor, cognitive and social emotional behaviour are discussed. Then the thorny question of failure to replicate is examined: Is it a curse or a blessing? Finally, the role of failure in research and what it tells us about our research paradigms is examined.
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Affiliation(s)
- Richard E Brown
- Department of Psychology and Neuroscience, Dalhousie University, Halifax, NS B3H 4R2, Canada.
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20
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Yousef A, Sosnowski DK, Fang L, Legaspi RJ, Korodimas J, Lee A, Magor KE, Seubert JM. Cardioprotective response and senescence in aged sEH null female mice exposed to LPS. Am J Physiol Heart Circ Physiol 2024; 326:H1366-H1385. [PMID: 38578240 DOI: 10.1152/ajpheart.00706.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 03/20/2024] [Accepted: 03/27/2024] [Indexed: 04/06/2024]
Abstract
Deterioration of physiological systems, like the cardiovascular system, occurs progressively with age impacting an individual's health and increasing susceptibility to injury and disease. Cellular senescence has an underlying role in age-related alterations and can be triggered by natural aging or prematurely by stressors such as the bacterial toxin lipopolysaccharide (LPS). The metabolism of polyunsaturated fatty acids by CYP450 enzymes produces numerous bioactive lipid mediators that can be further metabolized by soluble epoxide hydrolase (sEH) into diol metabolites, often with reduced biological effects. In our study, we observed age-related cardiac differences in female mice, where young mice demonstrated resistance to LPS injury, and genetic deletion or pharmacological inhibition of sEH using trans-4-[4-(3-adamantan-1-yl-ureido)-cyclohexyloxy]-benzoic acid attenuated LPS-induced cardiac dysfunction in aged female mice. Bulk RNA-sequencing analyses revealed transcriptomics differences in aged female hearts. The confirmatory analysis demonstrated changes to inflammatory and senescence gene markers such as Il-6, Mcp1, Il-1β, Nlrp3, p21, p16, SA-β-gal, and Gdf15 were attenuated in the hearts of aged female mice where sEH was deleted or inhibited. Collectively, these findings highlight the role of sEH in modulating the aging process of the heart, whereby targeting sEH is cardioprotective.NEW & NOTEWORTHY Soluble epoxide hydrolase (sEH) is an essential enzyme for converting epoxy fatty acids to their less bioactive diols. Our study suggests deletion or inhibition of sEH impacts the aging process in the hearts of female mice resulting in cardioprotection. Data indicate targeting sEH limits inflammation, preserves mitochondria, and alters cellular senescence in the aged female heart.
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Affiliation(s)
- Ala Yousef
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Deanna K Sosnowski
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Liye Fang
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Renald James Legaspi
- Department of Biological Sciences, Faculty of Science, University of Alberta, Edmonton, Alberta, Canada
| | - Jacob Korodimas
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Andy Lee
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Katharine E Magor
- Department of Biological Sciences, Faculty of Science, University of Alberta, Edmonton, Alberta, Canada
| | - John M Seubert
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
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21
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Liu TT, Pascal LE, Bauer SR, Miles HN, Panksepp JB, Lloyd GL, Li L, DeFranco DB, Ricke WA. Age-Dependent Effects of Voluntary Wheel Running Exercise on Voiding Behavior and Potential Age-Related Molecular Mechanisms in Mice. J Gerontol A Biol Sci Med Sci 2024; 79:glae007. [PMID: 38198648 PMCID: PMC11079951 DOI: 10.1093/gerona/glae007] [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: 04/13/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Older men frequently develop lower urinary tract symptoms attributed to benign prostatic hyperplasia (LUTS/BPH). Risk factors for LUTS/BPH include sedentary lifestyle, anxiety/depression, obesity, and frailty, which all increase with age. Although physical exercise may reduce the progression and/or severity of LUTS/BPH, the age-related mechanisms responsible remain unknown. METHODS Voiding symptoms, body mass, and frailty were assessed after 4-weeks of voluntary wheel running in 2-month (n = 10) and 24-month (n = 8) old C57Bl/6J male mice. In addition, various social and individual behaviors were examined in these cohorts. Finally, cellular and molecular markers of inflammation and mitochondrial protein expression were assessed in prostate tissue and systemically. RESULTS Despite running less (aged vs young X¯ = 12.3 vs 30.6 km/week; p = .04), aged mice had reduced voiding symptoms (X¯ = 67.3 vs 23.7; p < .0001) after 1 week of exercise, which was sustained through week 4 (X¯ = 67.3 vs 21.5; p < .0001). Exercise did not affect voiding symptoms in young mice. Exercise also increased mobility and decreased anxiety in both young and aged mice (p < .05). Exercise decreased expression of a key mitochondrial protein (PINK1; p < .05) and inflammation within the prostate (CD68; p < .05 and plasminogen activator inhibitor-1; p < .05) and in the serum (p < .05). However, a frailty index (X¯ = 0.17 vs 0.15; p = .46) and grip strength (X¯ = 1.10 vs 1.19; p = .24) were unchanged after 4 weeks of exercise in aged mice. CONCLUSIONS Voluntary aerobic exercise improves voiding behavior and mobility, and decreases prostatic mitochondrial protein expression and inflammation in aged mice. This promising model could be used to evaluate molecular mechanisms of aerobic exercise as a novel lifestyle intervention for older men with LUTS/BPH.
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Affiliation(s)
- Teresa T Liu
- Department of Urology, George M. O’Brien Center of Research Excellence, University of Wisconsin – Madison, Madison, Wisconsin, USA
| | - Laura E Pascal
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Scott R Bauer
- Department of Medicine, Urology, Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, USA
- San Francisco VA Medical Center, San Francisco, California, USA
| | - Hannah N Miles
- Department of Urology, George M. O’Brien Center of Research Excellence, University of Wisconsin – Madison, Madison, Wisconsin, USA
- School of Pharmacy, University of Wisconsin – Madison, Madison, Wisconsin, USA
| | - Jules B Panksepp
- Waisman Center, University of Wisconsin – Madison, Madison, Wisconsin, USA
| | - Granville L Lloyd
- Division of Urology, Department of Surgery, Rocky Mountain Regional VA Medical Center, University of Colorado Anschutz School of Medicine, Aurora, Colorado, USA
| | - Lingjun Li
- School of Pharmacy, University of Wisconsin – Madison, Madison, Wisconsin, USA
- Department of Chemistry, University of Wisconsin – Madison, Madison, Wisconsin, USA
| | - Donald B DeFranco
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - William A Ricke
- Department of Urology, George M. O’Brien Center of Research Excellence, University of Wisconsin – Madison, Madison, Wisconsin, USA
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22
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Chen X, Luo Y, Zhu Q, Zhang J, Huang H, Kan Y, Li D, Xu M, Liu S, Li J, Pan J, Zhang L, Guo Y, Wang B, Qi G, Zhou Z, Zhang CY, Fang L, Wang Y, Chen X. Small extracellular vesicles from young plasma reverse age-related functional declines by improving mitochondrial energy metabolism. NATURE AGING 2024; 4:814-838. [PMID: 38627524 PMCID: PMC11186790 DOI: 10.1038/s43587-024-00612-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 03/15/2024] [Indexed: 05/31/2024]
Abstract
Recent investigations into heterochronic parabiosis have unveiled robust rejuvenating effects of young blood on aged tissues. However, the specific rejuvenating mechanisms remain incompletely elucidated. Here we demonstrate that small extracellular vesicles (sEVs) from the plasma of young mice counteract pre-existing aging at molecular, mitochondrial, cellular and physiological levels. Intravenous injection of young sEVs into aged mice extends their lifespan, mitigates senescent phenotypes and ameliorates age-associated functional declines in multiple tissues. Quantitative proteomic analyses identified substantial alterations in the proteomes of aged tissues after young sEV treatment, and these changes are closely associated with metabolic processes. Mechanistic investigations reveal that young sEVs stimulate PGC-1α expression in vitro and in vivo through their miRNA cargoes, thereby improving mitochondrial functions and mitigating mitochondrial deficits in aged tissues. Overall, this study demonstrates that young sEVs reverse degenerative changes and age-related dysfunction, at least in part, by stimulating PGC-1α expression and enhancing mitochondrial energy metabolism.
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Affiliation(s)
- Xiaorui Chen
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Yang Luo
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Qing Zhu
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Jingzi Zhang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, China
| | - Huan Huang
- Department of Pediatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yansheng Kan
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Dian Li
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Ming Xu
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Shuohan Liu
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Jianxiao Li
- Institute of Systems, Molecular and Integrative Biology, School of Life Sciences, University of Liverpool, Liverpool, UK
| | - Jinmeng Pan
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Li Zhang
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Yan Guo
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Binghao Wang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
| | - Guantong Qi
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Zhen Zhou
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China
| | - Chen-Yu Zhang
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China.
- Research Unit of Extracellular RNA, Chinese Academy of Medical Sciences, Nanjing, China.
- Institute of Artificial Intelligence Biomedicine, Nanjing University, Nanjing, China.
| | - Lei Fang
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China.
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, China.
| | - Yanbo Wang
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China.
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, China.
| | - Xi Chen
- Center for Reproductive Medicine and Department of Andrology, Nanjing Drum Tower Hospital, State Key Laboratory of Pharmaceutical Biotechnology, Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, NJU Advanced Institute of Life Sciences (NAILS), School of Life Sciences, Nanjing University, Nanjing, China.
- Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, China.
- Institute of Artificial Intelligence Biomedicine, Nanjing University, Nanjing, China.
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23
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Frost OG, Ramkilawan P, Rebbaa A, Stolzing A. A systematic review of lifespan studies in rodents using stem cell transplantations. Ageing Res Rev 2024; 97:102295. [PMID: 38588866 DOI: 10.1016/j.arr.2024.102295] [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: 12/24/2023] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 04/10/2024]
Abstract
Organismal aging involves the progressive decline in organ function and increased susceptibility to age-associated diseases. Regardless of its origin, cellular aging is consequently reflected at the level of organ and associated systems dysfunction. Aging of stem cell populations within the body and their decreased ability to self-renew, differentiate, and regenerate damaged tissues, is a key contributor to organismal decline. Based on this, supplementing young stem cells may delay tissue aging, improve frailty and extend health and lifespan. This review investigates studies in rodents using stem cell transplantation from either mice or human donors. The aim is to consolidate available information on the efficacy of stem cell therapies in rodent models and provide insights to guide further research efforts. Out of the 21 studies included in this review, the methodology varied significantly including the lifespan measurement. To enable comparison the median lifespan was calculated using WebPlotDigitizer 4.6 if not provided by the literature. A total of 18 out of 21 studies evidenced significant lifespan extension post stem cell transplant, with 7 studies demonstrating benefits in reduced frailty and other aging complications.
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Affiliation(s)
- Oliver G Frost
- Centre for Biological Engineering, School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK; SENS Research Foundation, Mountain View, CA 94041, USA
| | | | | | - Alexandra Stolzing
- Centre for Biological Engineering, School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK.
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24
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Mishra M, Wu J, Kane AE, Howlett SE. The intersection of frailty and metabolism. Cell Metab 2024; 36:893-911. [PMID: 38614092 PMCID: PMC11123589 DOI: 10.1016/j.cmet.2024.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/11/2024] [Accepted: 03/21/2024] [Indexed: 04/15/2024]
Abstract
On average, aging is associated with unfavorable changes in cellular metabolism, which are the processes involved in the storage and expenditure of energy. However, metabolic dysregulation may not occur to the same extent in all older individuals as people age at different rates. Those who are aging rapidly are at increased risk of adverse health outcomes and are said to be "frail." Here, we explore the links between frailty and metabolism, including metabolic contributors and consequences of frailty. We examine how metabolic diseases may modify the degree of frailty in old age and suggest that frailty may predispose toward metabolic disease. Metabolic interventions that can mitigate the degree of frailty in people are reviewed. New treatment strategies developed in animal models that are poised for translation to humans are also considered. We suggest that maintaining a youthful metabolism into older age may be protective against frailty.
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Affiliation(s)
- Manish Mishra
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada
| | - Judy Wu
- Institute for Systems Biology, Seattle, WA, USA
| | - Alice E Kane
- Institute for Systems Biology, Seattle, WA, USA; Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Susan E Howlett
- Department of Pharmacology, Dalhousie University, Halifax, NS, Canada; Department of Medicine (Geriatric Medicine), Dalhousie University, Halifax, NS, Canada.
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Cella PS, de Matos RLN, Marinello PC, da Costa JC, Moura FA, Bracarense APFRL, Chimin P, Deminice R. Doxorubicin causes cachexia, sarcopenia, and frailty characteristics in mice. PLoS One 2024; 19:e0301379. [PMID: 38648220 PMCID: PMC11034664 DOI: 10.1371/journal.pone.0301379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/11/2024] [Indexed: 04/25/2024] Open
Abstract
While chemotherapy treatment can be lifesaving, it also has adverse effects that negatively impact the quality of life. To investigate the effects of doxorubicin chemotherapy on body weight loss, strength and muscle mass loss, and physical function impairments, all key markers of cachexia, sarcopenia, and frailty. Seventeen C57/BL/6 mice were allocated into groups. 1) Control (n = 7): mice were exposed to intraperitoneal (i.p.) injections of saline solution. 2) Dox (n = 10): mice were exposed to doxorubicin chemotherapy cycles (total dose of 18 mg/kg divided over 15 days). The body weight loss and decreased food intake were monitored to assess cachexia. To assess sarcopenia, we measured muscle strength loss using a traction method and evaluated muscle atrophy through histology of the gastrocnemius muscle. To evaluate physical function impairments and assess frailty, we employed the open field test to measure exploratory capacity. Doxorubicin administration led to the development of cachexia, as evidenced by a significant body weight loss (13%) and a substantial decrease in food intake (34%) over a 15-day period. Furthermore, 90% of the mice treated with doxorubicin exhibited sarcopenia, characterized by a 20% reduction in traction strength (p<0,05), a 10% decrease in muscle mass, and a 33% reduction in locomotor activity. Importantly, all mice subjected to doxorubicin treatment were considered frail based on the evaluation of their overall condition and functional impairments. The proposed model holds significant characteristics of human chemotherapy treatment and can be useful to understand the intricate relationship between chemotherapy, cachexia, sarcopenia, and frailty.
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Affiliation(s)
- Paola Sanches Cella
- Department of Physical Education, State University of Londrina, Londrina, Paraná, Brazil
| | | | | | - Júlio Cesar da Costa
- Department of Physical Education, State University of Londrina, Londrina, Paraná, Brazil
| | - Felipe Arruda Moura
- Laboratory of Applied Biomechanics State University of Londrina, Londrina, Paraná, Brazil
| | | | - Patricia Chimin
- Department of Physical Education, State University of Londrina, Londrina, Paraná, Brazil
| | - Rafael Deminice
- Department of Physical Education, State University of Londrina, Londrina, Paraná, Brazil
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Zane F, MacMurray C, Guillermain C, Cansell C, Todd N, Rera M. Ageing as a two-phase process: theoretical framework. FRONTIERS IN AGING 2024; 5:1378351. [PMID: 38651031 PMCID: PMC11034523 DOI: 10.3389/fragi.2024.1378351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 02/26/2024] [Indexed: 04/25/2024]
Abstract
Human ageing, along with the ageing of conventional model organisms, is depicted as a continuous and progressive decline of biological capabilities accompanied by an exponentially increasing mortality risk. However, not all organisms experience ageing identically and our understanding of the phenomenon is coloured by human-centric views. Ageing is multifaceted and influences a diverse range of species in varying ways. Some undergo swift declines post-reproduction, while others exhibit insubstantial changes throughout their existence. This vast array renders defining universally applicable "ageing attributes" a daunting task. It is nonetheless essential to recognize that not all ageing features are organism-specific. These common attributes have paved the way for identifying "hallmarks of ageing," processes that are intertwined with age, amplified during accelerated ageing, and manipulations of which can potentially modulate or even reverse the ageing process. Yet, a glaring observation is that individuals within a single population age at varying rates. To address this, demographers have coined the term 'frailty'. Concurrently, scientific advancements have ushered in the era of molecular clocks. These innovations enable a distinction between an individual's chronological age (time since birth) and biological age (physiological status and mortality risk). In 2011, the "Smurf" phenotype was unveiled in Drosophila, delineating an age-linked escalation in intestinal permeability that presages imminent mortality. It not only acts as a predictor of natural death but identifies individuals exhibiting traits normally described as age-related. Subsequent studies have revealed the phenotype in organisms like nematodes, zebrafish, and mice, invariably acting as a death predictor. Collectively, these findings have steered our conception of ageing towards a framework where ageing is not linear and continuous but marked by two distinct, necessary phases, discernible in vivo, courtesy of the Smurf phenotype. This framework includes a mathematical enunciation of longevity trends based on three experimentally measurable parameters. It facilitates a fresh perspective on the evolution of ageing as a function. In this article, we aim to delineate and explore the foundational principles of this innovative framework, emphasising its potential to reshape our understanding of ageing, challenge its conventional definitions, and recalibrate our comprehension of its evolutionary trajectory.
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Affiliation(s)
- Flaminia Zane
- Université Paris Cité, INSERM UMR U1284, Paris, France
| | | | | | - Céline Cansell
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, Palaiseau, France
| | - Nicolas Todd
- Eco-Anthropologie (EA), Muséum National d’Histoire Naturelle, CNRS, Université de Paris, Musée de l’Homme, Paris, France
| | - Michael Rera
- Université Paris Cité, Institut Jacques Monod, CNRS UMR 7592, Paris, France
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Dumont BL, Gatti DM, Ballinger MA, Lin D, Phifer-Rixey M, Sheehan MJ, Suzuki TA, Wooldridge LK, Frempong HO, Lawal RA, Churchill GA, Lutz C, Rosenthal N, White JK, Nachman MW. Into the Wild: A novel wild-derived inbred strain resource expands the genomic and phenotypic diversity of laboratory mouse models. PLoS Genet 2024; 20:e1011228. [PMID: 38598567 PMCID: PMC11034653 DOI: 10.1371/journal.pgen.1011228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 04/22/2024] [Accepted: 03/18/2024] [Indexed: 04/12/2024] Open
Abstract
The laboratory mouse has served as the premier animal model system for both basic and preclinical investigations for over a century. However, laboratory mice capture only a subset of the genetic variation found in wild mouse populations, ultimately limiting the potential of classical inbred strains to uncover phenotype-associated variants and pathways. Wild mouse populations are reservoirs of genetic diversity that could facilitate the discovery of new functional and disease-associated alleles, but the scarcity of commercially available, well-characterized wild mouse strains limits their broader adoption in biomedical research. To overcome this barrier, we have recently developed, sequenced, and phenotyped a set of 11 inbred strains derived from wild-caught Mus musculus domesticus. Each of these "Nachman strains" immortalizes a unique wild haplotype sampled from one of five environmentally distinct locations across North and South America. Whole genome sequence analysis reveals that each strain carries between 4.73-6.54 million single nucleotide differences relative to the GRCm39 mouse reference, with 42.5% of variants in the Nachman strain genomes absent from current classical inbred mouse strain panels. We phenotyped the Nachman strains on a customized pipeline to assess the scope of disease-relevant neurobehavioral, biochemical, physiological, metabolic, and morphological trait variation. The Nachman strains exhibit significant inter-strain variation in >90% of 1119 surveyed traits and expand the range of phenotypic diversity captured in classical inbred strain panels. These novel wild-derived inbred mouse strain resources are set to empower new discoveries in both basic and preclinical research.
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Affiliation(s)
- Beth L. Dumont
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
- Graduate School of Biomedical Sciences, Tufts University, Boston, Massachusetts, United States of America
- Graduate School of Biomedical Science and Engineering, The University of Maine, Orono, Maine, United States of America
| | - Daniel M. Gatti
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
| | - Mallory A. Ballinger
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, United States of America
| | - Dana Lin
- Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Megan Phifer-Rixey
- Department of Biology, Drexel University, Philadelphia, Pennsylvania, United States of America
| | - Michael J. Sheehan
- Department of Neurobiology and Behavior, Cornell University, Ithaca, New York, United States of America
| | - Taichi A. Suzuki
- College of Health Solutions and Biodesign Center for Health Through Microbiomes, Arizona State University, Tempe, Arizona, United States of America
| | - Lydia K. Wooldridge
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
| | - Hilda Opoku Frempong
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
- Graduate School of Biomedical Science and Engineering, The University of Maine, Orono, Maine, United States of America
| | - Raman Akinyanju Lawal
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
| | - Gary A. Churchill
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
- Graduate School of Biomedical Sciences, Tufts University, Boston, Massachusetts, United States of America
- Graduate School of Biomedical Science and Engineering, The University of Maine, Orono, Maine, United States of America
| | - Cathleen Lutz
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
| | - Nadia Rosenthal
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
- Graduate School of Biomedical Sciences, Tufts University, Boston, Massachusetts, United States of America
- Graduate School of Biomedical Science and Engineering, The University of Maine, Orono, Maine, United States of America
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Jacqueline K. White
- The Jackson Laboratory, 600 Main Street, Bar Harbor, Maine, United States of America
| | - Michael W. Nachman
- Department of Integrative Biology, Museum of Vertebrate Zoology, and Center for Computational Biology, University of California, Berkeley, Berkeley, California, United States of America
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Yin JT, Zhang MR, Zhang S, Yang SH, Li JP, Liu Y, Duan JA, Guo JM. Astragalus membranaceus Polysaccharide Regulates Small Intestinal Microbes and Activates IL-22 Signal Pathway to Promote Intestinal Stem Cell Regeneration in Aging Mice. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2024; 52:513-539. [PMID: 38533568 DOI: 10.1142/s0192415x24500228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Aging can cause degenerative changes in multiple tissues and organs. Gastrointestinal diseases and dysfunctions are common in the elderly population. In this study, we investigated the effects of Astragalus membranaceus polysaccharide (APS) and Astragalus membranaceus ethanol extract (AEE) on age-related intestinal dysfunction and gut microbiota dysbiosis in naturally aging mice. The energy expenditure and physical activity of 23-month-old C57BL6/J mice were recorded using a metabolic cage system. Pathological changes in the intestine were evaluated using Alcian blue staining. The protein levels of leucine-rich repeats containing G protein-coupled receptor 5 (Lgr5) and Stat3 in the small intestine were determined using immunohistochemistry. The intestinal cell migration distance was assessed using bromodeoxyuridine (BrdU) immunofluorescence staining. The gene transcription levels of intestinal stem cell (ISC) markers and ISC-related signaling pathways were detected using quantitative real-time PCR (qRT-PCR). Microbiota analysis based on 16S rDNA was performed to evaluate the composition of the gut microbiota. APS and AEE improved a series of aging phenotypes in female but not in male aging mice. APS and AEE ameliorate intestinal dysfunction and histopathological changes in aging mice. APS had a more significant anti-aging effect than AEE, particularly on intestinal dysfunction. APS promotes ISC regeneration by activating the IL-22 signaling pathway. Cohousing (CH) experiments further confirmed that APS induced the IL-22 signaling pathway by increasing the abundance of Lactobacillus, thereby promoting the regeneration of ISCs. Our results show that APS may serve as a promising agent for improving age-related intestinal dysfunction.
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Affiliation(s)
- Jia-Ting Yin
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
- State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ming-Ruo Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Shu Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Shu-Hui Yang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Jian-Ping Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Yun Liu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Jin-Ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
| | - Jian-Ming Guo
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Jiangsu Key Laboratory for High Technology Research of TCM, Formulae Nanjing University of Chinese Medicine, Nanjing 210023, P. R. China
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Jayne L, Lavin-Peter A, Roessler J, Tyshkovskiy A, Antoszewski M, Ren E, Markovski A, Sun S, Yao H, Sankaran VG, Gladyshev VN, Brooke RT, Horvath S, Griffith EC, Hrvatin S. A torpor-like state (TLS) in mice slows blood epigenetic aging and prolongs healthspan. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.20.585828. [PMID: 38585858 PMCID: PMC10996477 DOI: 10.1101/2024.03.20.585828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Torpor and hibernation are extreme physiological adaptations of homeotherms associated with pro-longevity effects. Yet the underlying mechanisms of how torpor affects aging, and whether hypothermic and hypometabolic states can be induced to slow aging and increase health span, remain unknown. We demonstrate that the activity of a spatially defined neuronal population in the avMLPA, which has previously been identified as a torpor-regulating brain region, is sufficient to induce a torpor like state (TLS) in mice. Prolonged induction of TLS slows epigenetic aging across multiple tissues and improves health span. We isolate the effects of decreased metabolic rate, long-term caloric restriction, and decreased core body temperature (Tb) on blood epigenetic aging and find that the pro-longevity effect of torpor-like states is mediated by decreased Tb. Taken together, our findings provide novel mechanistic insight into the pro-longevity effects of torpor and hibernation and support the growing body of evidence that Tb is an important mediator of aging processes.
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Affiliation(s)
- Lorna Jayne
- Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, 455 Main Street, Cambridge, MA 02142, USA
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115
- Present address: Department of Neurobiology, Stanford University Medical Center, Stanford, CA, USA
| | - Aurora Lavin-Peter
- Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, 455 Main Street, Cambridge, MA 02142, USA
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115
| | - Julian Roessler
- Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, 455 Main Street, Cambridge, MA 02142, USA
| | - Alexander Tyshkovskiy
- Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Mateusz Antoszewski
- Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Erika Ren
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115
| | - Aleksandar Markovski
- Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, 455 Main Street, Cambridge, MA 02142, USA
| | - Senmiao Sun
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115
- Program in Neuroscience, Harvard Medical School, Boston, MA, USA
| | - Hanqi Yao
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115
| | - Vijay G. Sankaran
- Division of Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Vadim N. Gladyshev
- Division of Genetics, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | | | - Steve Horvath
- Epigenetic Clock Development Foundation, Torrance, CA, USA
- Altos Labs, Cambridge, UK
| | - Eric C. Griffith
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115
| | - Sinisa Hrvatin
- Whitehead Institute for Biomedical Research and Department of Biology, Massachusetts Institute of Technology, 455 Main Street, Cambridge, MA 02142, USA
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30
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Lamming DW. Quantification of healthspan in aging mice: Introducing FAMY and GRAIL. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.11.07.566044. [PMID: 37986745 PMCID: PMC10659332 DOI: 10.1101/2023.11.07.566044] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
The population around the world is graying, and as many of these individuals will spend years suffering from the burdens of age associated diseases, understanding how to increase healthspan, defined as the period of life free from disease and disability, is an urgent priority of geroscience research. The lack of agreed-upon quantitative metrics for measuring healthspan in aging mice has slowed progress in identifying interventions that do not simply increase lifespan, but also healthspan. Here, we define FAMY (Frailty-Adjusted Mouse Years) and GRAIL (Gauging Robust Aging when Increasing Lifespan) as new summary statistics for quantifying healthspan in mice. FAMY integrates lifespan data with longitudinal measurements of a widely utilized clinical frailty index, while GRAIL incorporates these measures and also adds information from widely utilized healthspan assays and the hallmarks of aging. Both metrics are conceptually similar to quality-adjusted life years (QALY), a widely-utilized measure of disease burden in humans, and can be readily calculated from data acquired during longitudinal and cross-sectional studies of mouse aging. We find that interventions generally thought to promote health, including calorie restriction, robustly improve healthspan as measured by FAMY and GRAIL. Finally, we show that the use of GRAIL provides new insights, and identify dietary restriction of protein or isoleucine as interventions that robustly promote healthspan but not longevity in female HET3 mice. We suggest that the routine integration of these measures into studies of aging in mice will allow the identification and development of interventions that promote healthy aging even in the absence of increased lifespan.
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Affiliation(s)
- Dudley W. Lamming
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA
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31
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McGill CJ, Christensen A, Qian W, Thorwald MA, Lugo JG, Namvari S, White OS, Finch CE, Benayoun BA, Pike CJ. Protection against APOE4 -associated aging phenotypes with the longevity-promoting intervention 17α-estradiol in male mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.12.584678. [PMID: 38559059 PMCID: PMC10980056 DOI: 10.1101/2024.03.12.584678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The apolipoprotein ε4 allele ( APOE4 ) is associated with decreased longevity, increased vulnerability to age-related declines, and disorders across multiple systems. Interventions that promote healthspan and lifespan represent a promising strategy to attenuate the development of APOE4 -associated aging phenotypes. Here we studied the ability of the longevity-promoting intervention 17α-estradiol (17αE2) to protect against age-related impairments in APOE4 versus the predominant APOE3 genotype using early middle-aged mice with knock-in of human APOE alleles. Beginning at age 10 months, male APOE3 or APOE4 mice were treated for 20 weeks with 17αE2 or vehicle then compared for indices of aging phenotypes body-wide. Across peripheral and neural measures, APOE4 was associated with poorer outcomes. Notably, 17αE2 treatment improved outcomes in a genotype-dependent manner favoring APOE4 mice. These data demonstrate a positive APOE4 bias in 17αE2-mediated healthspan actions, suggesting that longevity-promoting interventions may be useful in mitigating deleterious age-related risks associated with APOE4 genotype.
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Ye L, Yuan J, Zhu S, Ji S, Dai J. Swimming exercise reverses transcriptomic changes in aging mouse lens. BMC Med Genomics 2024; 17:67. [PMID: 38439070 PMCID: PMC10913554 DOI: 10.1186/s12920-024-01839-1] [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: 11/09/2023] [Accepted: 02/28/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND The benefits of physical activity for the overall well-being of elderly individuals are well-established, the precise mechanisms through which exercise improves pathological changes in the aging lens have yet to be fully understood. METHODS 3-month-old C57BL/6J mice comprised young sedentary (YS) group, while aging mice (18-month-old) were divided into aging sedentary (AS) group and aging exercising (AE) group. Mice in AE groups underwent sequential stages of swimming exercise. H&E staining was employed to observe alterations in lens morphology. RNA-seq analysis was utilized to examine transcriptomic changes. Furthermore, qPCR and immunohistochemistry were employed for validation of the results. RESULTS AE group showed alleviation of histopathological aging changes in AS group. By GSEA analysis of the transcriptomic changes, swimming exercise significantly downregulated approximately half of the pathways that underwent alterations upon aging, where notable improvements were 'calcium signaling pathway', 'neuroactive ligand receptor interaction' and 'cell adhesion molecules'. Furthermore, we revealed a total of 92 differentially expressed genes between the YS and AS groups, of which 10 genes were observed to be mitigated by swimming exercise. The result of qPCR was in consistent with the transcriptome data. We conducted immunohistochemical analysis on Ciart, which was of particular interest due to its dual association as a common aging gene and its significant responsiveness to exercise. The Protein-protein Interaction network of Ciart showed the involvement of the regulation of Rorb and Sptbn5 during the process. CONCLUSION The known benefits of exercise could extend to the aging lens and support further investigation into the specific roles of Ciart-related pathways in aging lens.
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Affiliation(s)
- Lin Ye
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiayue Yuan
- Department of Ophthalmology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shijie Zhu
- School of Medicine, Tongji University, Shanghai, China
| | - Shunmei Ji
- Department of Ophthalmology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jinhui Dai
- Department of Ophthalmology, Zhongshan Hospital, Fudan University, Shanghai, China.
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Mohamad Ishak NS, Kikuchi M, Ikemoto K. Dietary pyrroloquinoline quinone hinders aging progression in male mice and D-galactose-induced cells. FRONTIERS IN AGING 2024; 5:1351860. [PMID: 38487591 PMCID: PMC10938241 DOI: 10.3389/fragi.2024.1351860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/08/2024] [Indexed: 03/17/2024]
Abstract
Background: Understanding and promoting healthy aging has become a necessity in the modern world, where life expectancy is rising. The prospective benefits of the antioxidant pyrroloquinoline quinone (PQQ) in healthy aging are promising. However, its role in aging remains unclear. Thus, this study aimed to investigate the effect of PQQ on preventing the progression of aging and to explore its underlying molecular mechanisms. Methods: Naturally aged C57BL/6J male mice were fed a normal diet with or without PQQ (20 mg/kg/day) for 10 weeks. Body composition was measured by bioimpedance at weeks 0 and 8. The integument conditions were evaluated at weeks 0, 4, and 8. Muscle strength and function were examined at week 8. At the ninth week, computed tomography images of the mice were captured, and blood and tissue samples were collected. The levels of inflammatory cytokines in the gastrocnemius muscle were measured, and the muscle fiber cross-sectional area in the soleus muscle was examined. Additionally, a D-galactose (D-gal)-induced cell aging model was used to study the effects of PQQ intervention on cell proliferation, senescence, differentiation, ROS levels, and mitochondrial function in myoblasts (C2C12). Cell proliferation and monolayer permeability of D-gal-induced intestinal epithelial cells (IEC6) were also examined. Results: Aged mice suffered from malnutrition; however, PQQ supplementation ameliorated this effect, possibly by improving metabolic dysfunction and small intestinal performance. PQQ prevented rapid loss of body fat and body fluid accumulation, attenuated muscle atrophy and weakening, reduced chronic inflammation in skeletal muscles, and improved skin and coating conditions in aged mice. Furthermore, PQQ intervention in D-gal-treated C2C12 cells improved mitochondrial function, reduced cellular reactive oxygen species (ROS) levels and senescence, and enhanced cell differentiation, consequently preventing age-related muscle atrophy. In addition, PQQ increased cell proliferation in D-gal-treated IEC6 cells and consequently improved intestinal barrier function. Conclusion: PQQ could hinder the aging process and particularly attenuate muscle atrophy, and muscle weakness by improving mitochondrial function, leading to reduced age-related oxidative stress and inflammation in muscles. PQQ may also ameliorate malnutrition caused by intestinal barrier dysfunction by enhancing IEC proliferation. This study provides evidence for the role of PQQ in aging and suggests that PQQ may be a potential nutritional supplementation that can be included in healthy aging strategies.
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Singh J, Jackson KL, Tang FS, Fu T, Nowell C, Salimova E, Kiriazis H, Ritchie RH, Head GA, Woodman OL, Qin CX. The pro-resolving mediator, annexin A1 regulates blood pressure, and age-associated changes in cardiovascular function and remodeling. FASEB J 2024; 38:e23457. [PMID: 38318648 DOI: 10.1096/fj.202301802r] [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: 09/05/2023] [Revised: 12/21/2023] [Accepted: 01/18/2024] [Indexed: 02/07/2024]
Abstract
Aging is associated with chronic, low-level inflammation which may contribute to cardiovascular pathologies such as hypertension and atherosclerosis. This chronic inflammation may be opposed by endogenous mechanisms to limit inflammation, for example, by the actions of annexin A1 (ANXA1), an endogenous glucocorticoid-regulated protein that has anti-inflammatory and pro-resolving activity. We hypothesized the pro-resolving mediator ANXA1 protects against age-induced changes in blood pressure (BP), cardiovascular structure and function, and cardiac senescence. BP was measured monthly in conscious mature (4-month) and middle-aged (12-month) ANXA1-deficient (ANXA1-/- ) and wild-type C57BL/6 mice. Body composition was measured using EchoMRI, and both cardiac and vascular function using ultrasound imaging. Cardiac hypertrophy, fibrosis and senescence, vascular fibrosis, elastin, and calcification were assessed histologically. Gene expression relevant to structural remodeling, inflammation, and cardiomyocyte senescence were also quantified. In C57BL/6 mice, progression from 4 to 12 months of age did not affect the majority of cardiovascular parameters measured, with the exception of mild cardiac hypertrophy, vascular calcium, and collagen deposition. Interestingly, ANXA1-/- mice exhibited higher BP, regardless of age. Additionally, age progression had a marked impact in ANXA1-/- mice, with markedly augmented vascular remodeling, impaired vascular distensibility, and body composition. Consistent with vascular dysfunction, cardiac dysfunction, and hypertrophy were also evident, together with markers of senescence and inflammation. These findings suggest that endogenous ANXA1 plays a critical role in regulating BP, cardiovascular function, and remodeling and delays cardiac senescence. Our findings support the development of novel ANXA1-based therapies to prevent age-related cardiovascular pathologies.
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Affiliation(s)
- Jaideep Singh
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Kristy L Jackson
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Feng Shii Tang
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Ting Fu
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Cameron Nowell
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Ekaterina Salimova
- Monash Biomedical Imaging, Monash University, Clayton, Melbourne, Victoria, Australia
| | - Helen Kiriazis
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Rebecca H Ritchie
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Geoffrey A Head
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Owen L Woodman
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Cheng Xue Qin
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Pharmacology, School of Pharmaceutical Sciences, Qilu College of Medicine, Shandong University, Jinan, China
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China
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35
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Luciano A, Robinson L, Garland G, Lyons B, Korstanje R, Di Francesco A, Churchill GA. Longitudinal Fragility Phenotyping Predicts Lifespan and Age-Associated Morbidity in C57BL/6 and Diversity Outbred Mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.06.579096. [PMID: 38370707 PMCID: PMC10871234 DOI: 10.1101/2024.02.06.579096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Aging studies in mammalian models often depend on natural lifespan data as a primary outcome. Tools for lifespan prediction could accelerate these studies and reduce the need for veterinary intervention. Here, we leveraged large-scale longitudinal frailty and lifespan data on two genetically distinct mouse cohorts to evaluate noninvasive strategies to predict life expectancy in mice. We applied a modified frailty assessment, the Fragility Index, derived from existing frailty indices with additional deficits selected by veterinarians. We developed an ensemble machine learning classifier to predict imminent mortality (95% proportion of life lived [95PLL]). Our algorithm represented improvement over previous predictive criteria but fell short of the level of reliability that would be needed to make advanced prediction of lifespan and thus accelerate lifespan studies. Highly sensitive and specific frailty-based predictive endpoint criteria for aged mice remain elusive. While frailty-based prediction falls short as a surrogate for lifespan, it did demonstrate significant predictive power and as such must contain information that could be used to inform the conclusion of aging experiments. We propose a frailty-based measure of healthspan as an alternative target for aging research and demonstrate that lifespan and healthspan criteria reveal distinct aspects of aging in mice.
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36
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Tokizane K, Brace CS, Imai SI. DMH Ppp1r17 neurons regulate aging and lifespan in mice through hypothalamic-adipose inter-tissue communication. Cell Metab 2024; 36:377-392.e11. [PMID: 38194970 PMCID: PMC10922643 DOI: 10.1016/j.cmet.2023.12.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 10/27/2023] [Accepted: 12/05/2023] [Indexed: 01/11/2024]
Abstract
Recent studies have shown that the hypothalamus functions as a control center of aging in mammals that counteracts age-associated physiological decline through inter-tissue communications. We have identified a key neuronal subpopulation in the dorsomedial hypothalamus (DMH), marked by Ppp1r17 expression (DMHPpp1r17 neurons), that regulates aging and longevity in mice. DMHPpp1r17 neurons regulate physical activity and WAT function, including the secretion of extracellular nicotinamide phosphoribosyltransferase (eNAMPT), through sympathetic nervous stimulation. Within DMHPpp1r17 neurons, the phosphorylation and subsequent nuclear-cytoplasmic translocation of Ppp1r17, regulated by cGMP-dependent protein kinase G (PKG; Prkg1), affect gene expression regulating synaptic function, causing synaptic transmission dysfunction and impaired WAT function. Both DMH-specific Prkg1 knockdown, which suppresses age-associated Ppp1r17 translocation, and the chemogenetic activation of DMHPpp1r17 neurons significantly ameliorate age-associated dysfunction in WAT, increase physical activity, and extend lifespan. Thus, these findings clearly demonstrate the importance of the inter-tissue communication between the hypothalamus and WAT in mammalian aging and longevity control.
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Affiliation(s)
- Kyohei Tokizane
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Cynthia S Brace
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Shin-Ichiro Imai
- Departments of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
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37
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Griffin PT, Kane AE, Trapp A, Li J, Arnold M, Poganik JR, Conway RJ, McNamara MS, Meer MV, Hoffman N, Amorim JA, Tian X, MacArthur MR, Mitchell SJ, Mueller AL, Carmody C, Vera DL, Kerepesi C, Ying K, Noren Hooten N, Mitchell JR, Evans MK, Gladyshev VN, Sinclair DA. TIME-seq reduces time and cost of DNA methylation measurement for epigenetic clock construction. NATURE AGING 2024; 4:261-274. [PMID: 38200273 PMCID: PMC11332592 DOI: 10.1038/s43587-023-00555-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 12/05/2023] [Indexed: 01/12/2024]
Abstract
Epigenetic 'clocks' based on DNA methylation have emerged as the most robust and widely used aging biomarkers, but conventional methods for applying them are expensive and laborious. Here we develop tagmentation-based indexing for methylation sequencing (TIME-seq), a highly multiplexed and scalable method for low-cost epigenetic clocks. Using TIME-seq, we applied multi-tissue and tissue-specific epigenetic clocks in over 1,800 mouse DNA samples from eight tissue and cell types. We show that TIME-seq clocks are accurate and robust, enriched for polycomb repressive complex 2-regulated loci, and benchmark favorably against conventional methods despite being up to 100-fold less expensive. Using dietary treatments and gene therapy, we find that TIME-seq clocks reflect diverse interventions in multiple tissues. Finally, we develop an economical human blood clock (R > 0.96, median error = 3.39 years) in 1,056 demographically representative individuals. These methods will enable more efficient epigenetic clock measurement in larger-scale human and animal studies.
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Affiliation(s)
- Patrick T Griffin
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Alice E Kane
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
- Institute for Systems Biology, Seattle, WA, USA
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Alexandre Trapp
- Brigham and Women's Hospital, Division of Genetics, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Jien Li
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Matthew Arnold
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Jesse R Poganik
- Brigham and Women's Hospital, Division of Genetics, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Ryan J Conway
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Maeve S McNamara
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Margarita V Meer
- Brigham and Women's Hospital, Division of Genetics, Department of Medicine, Harvard Medical School, Boston, MA, USA
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
- San Diego Institute of Science, Altos Labs, San Diego, CA, USA
| | - Noah Hoffman
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - João A Amorim
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Xiao Tian
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Michael R MacArthur
- Department of Health Sciences and Technology, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland
- Lewis-Sigler Institute of Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Sarah J Mitchell
- Department of Health Sciences and Technology, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland
- Ludwig Princeton Branch, Princeton University, Princeton, NJ, USA
| | - Amber L Mueller
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
- Cell Metabolism, Cell Press, Cambridge, MA, USA
| | - Colleen Carmody
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Daniel L Vera
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA
| | - Csaba Kerepesi
- Brigham and Women's Hospital, Division of Genetics, Department of Medicine, Harvard Medical School, Boston, MA, USA
- Institute for Computer Science and Control, Eötvös Loránd Research Network, Budapest, Hungary
| | - Kejun Ying
- Brigham and Women's Hospital, Division of Genetics, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Nicole Noren Hooten
- Laboratory of Epidemiology and Population Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - James R Mitchell
- Department of Health Sciences and Technology, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland
| | - Michele K Evans
- Laboratory of Epidemiology and Population Science, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Vadim N Gladyshev
- Brigham and Women's Hospital, Division of Genetics, Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - David A Sinclair
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School, Boston, MA, USA.
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38
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Blank HM, Hammer SE, Boatright L, Roberts C, Heyden KE, Nagarajan A, Tsuchiya M, Brun M, Johnson CD, Stover PJ, Sitcheran R, Kennedy BK, Adams LG, Kaeberlein M, Field MS, Threadgill DW, Andrews-Polymenis HL, Polymenis M. Late-life dietary folate restriction reduces biosynthetic processes without compromising healthspan in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.12.575290. [PMID: 38260683 PMCID: PMC10802571 DOI: 10.1101/2024.01.12.575290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Folate is a vitamin required for cell growth and is present in fortified foods in the form of folic acid to prevent congenital abnormalities. The impact of low folate status on life-long health is poorly understood. We found that limiting folate levels with the folate antagonist methotrexate increased the lifespan of yeast and worms. We then restricted folate intake in aged mice and measured various health metrics, metabolites, and gene expression signatures. Limiting folate intake decreased anabolic biosynthetic processes in mice and enhanced metabolic plasticity. Despite reduced serum folate levels in mice with limited folic acid intake, these animals maintained their weight and adiposity late in life, and we did not observe adverse health outcomes. These results argue that the effectiveness of folate dietary interventions may vary depending on an individual's age and sex. A higher folate intake is advantageous during the early stages of life to support cell divisions needed for proper development. However, a lower folate intake later in life may result in healthier aging.
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Affiliation(s)
- Heidi M. Blank
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, United States
| | - Staci E. Hammer
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, United States
| | - Laurel Boatright
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, United States
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, Bryan, United States
| | - Courtney Roberts
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, United States
| | - Katarina E. Heyden
- Division of Nutritional Sciences, Cornell University, Ithaca, United States
| | - Aravindh Nagarajan
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, Bryan, United States
- Interdisciplinary Program in Genetics, Texas A&M University, College Station, United States
| | - Mitsuhiro Tsuchiya
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, United States
| | - Marcel Brun
- Texas A&M Agrilife Research, Genomics and Bioinformatics Service, College Station, United States
| | - Charles D. Johnson
- Texas A&M Agrilife Research, Genomics and Bioinformatics Service, College Station, United States
| | - Patrick J. Stover
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, United States
- Institute for Advancing Health through Agriculture, Texas A&M University, College Station, United States
- Department of Nutrition, Texas A&M University, College Station, United States
| | - Raquel Sitcheran
- Department of Cell Biology and Genetics, School of Medicine, Texas A&M University Health Science Center, Bryan, United States
| | - Brian K. Kennedy
- Departments of Biochemistry and Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Centre for Healthy Ageing, National University of Singapore, National University Health System, Singapore, Singapore
| | - L. Garry Adams
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M, College Station, Texas, USA
| | - Matt Kaeberlein
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, United States
- Optispan, Inc., Seattle, United States
| | - Martha S. Field
- Division of Nutritional Sciences, Cornell University, Ithaca, United States
| | - David W. Threadgill
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, United States
- Interdisciplinary Program in Genetics, Texas A&M University, College Station, United States
- Department of Nutrition, Texas A&M University, College Station, United States
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, United States
| | - Helene L. Andrews-Polymenis
- Department of Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, Bryan, United States
- Interdisciplinary Program in Genetics, Texas A&M University, College Station, United States
| | - Michael Polymenis
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, United States
- Interdisciplinary Program in Genetics, Texas A&M University, College Station, United States
- Institute for Advancing Health through Agriculture, Texas A&M University, College Station, United States
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39
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Yeh CY, Chini LC, Davidson JW, Garcia GG, Gallagher MS, Freichels IT, Calubag MF, Rodgers AC, Green CL, Babygirija R, Sonsalla MM, Pak HH, Trautman M, Hacker TA, Miller RA, Simcox J, Lamming DW. Late-life isoleucine restriction promotes physiological and molecular signatures of healthy aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.02.06.527311. [PMID: 36798157 PMCID: PMC9934591 DOI: 10.1101/2023.02.06.527311] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
In defiance of the paradigm that calories from all sources are equivalent, we and others have shown that dietary protein is a dominant regulator of healthy aging. The restriction of protein or the branched-chain amino acid isoleucine promotes healthspan and extends lifespan when initiated in young or adult mice. However, many interventions are less efficacious or even deleterious when initiated in aged animals. Here, we investigate the physiological, metabolic, and molecular consequences of consuming a diet with a 67% reduction of all amino acids (Low AA), or of isoleucine alone (Low Ile), in male and female C57BL/6J.Nia mice starting at 20 months of age. We find that both diet regimens effectively reduce adiposity and improve glucose tolerance, which were benefits that were not mediated by reduced calorie intake. Both diets improve specific aspects of frailty, slow multiple molecular indicators of aging rate, and rejuvenate the aging heart and liver at the molecular level. These results demonstrate that Low AA and Low Ile diets can drive youthful physiological and molecular signatures, and support the possibility that these dietary interventions could help to promote healthy aging in older adults.
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Affiliation(s)
- Chung-Yang Yeh
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
| | - Lucas C.S. Chini
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
| | - Jessica W. Davidson
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
| | - Gonzalo G. Garcia
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI 48109
| | - Meredith S. Gallagher
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
| | - Isaac T. Freichels
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
| | - Mariah F. Calubag
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
- Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706
| | - Allison C. Rodgers
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- Cardiovascular Physiology Core Facility, University of Wisconsin-Madison, Madison, WI 53706
| | - Cara L. Green
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
| | - Reji Babygirija
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
- Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706
| | - Michelle M. Sonsalla
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
- Comparative Biomedical Sciences Graduate Training Program, University of Wisconsin-Madison, Madison, WI 53706
| | - Heidi H. Pak
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
- Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706
| | - Michaela Trautman
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
- Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706
| | - Timothy A. Hacker
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- Cardiovascular Physiology Core Facility, University of Wisconsin-Madison, Madison, WI 53706
| | - Richard A Miller
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI 48109
| | - Judith Simcox
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706
- Howard Hughes Medical Institute, Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Dudley W. Lamming
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705
- Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706
- Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706
- Comparative Biomedical Sciences Graduate Training Program, University of Wisconsin-Madison, Madison, WI 53706
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40
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Lim JS, Jeon EJ, Go HS, Kim HJ, Kim KY, Nguyen TQT, Lee DY, Kim KS, Pietrocola F, Hong SH, Lee SE, Kim KS, Park TS, Choi DH, Jeong YJ, Park JH, Kim HS, Min JJ, Kim YS, Park JT, Cho JH, Lee GW, Lee JH, Choy HE, Park SC, Lee CH, Rhee JH, Serrano M, Cho KA. Mucosal TLR5 activation controls healthspan and longevity. Nat Commun 2024; 15:46. [PMID: 38167804 PMCID: PMC10761998 DOI: 10.1038/s41467-023-44263-2] [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: 02/26/2020] [Accepted: 12/06/2023] [Indexed: 01/05/2024] Open
Abstract
Addressing age-related immunological defects through therapeutic interventions is essential for healthy aging, as the immune system plays a crucial role in controlling infections, malignancies, and in supporting tissue homeostasis and repair. In our study, we show that stimulating toll-like receptor 5 (TLR5) via mucosal delivery of a flagellin-containing fusion protein effectively extends the lifespan and enhances the healthspan of mice of both sexes. This enhancement in healthspan is evidenced by diminished hair loss and ocular lens opacity, increased bone mineral density, improved stem cell activity, delayed thymic involution, heightened cognitive capacity, and the prevention of pulmonary lung fibrosis. Additionally, this fusion protein boosts intestinal mucosal integrity by augmenting the surface expression of TLR5 in a certain subset of dendritic cells and increasing interleukin-22 (IL-22) secretion. In this work, we present observations that underscore the benefits of TLR5-dependent stimulation in the mucosal compartment, suggesting a viable strategy for enhancing longevity and healthspan.
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Affiliation(s)
- Jae Sung Lim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Eun Jae Jeon
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Hye Sun Go
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Hyung-Jin Kim
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Kye Young Kim
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea
| | - Thi Quynh Trang Nguyen
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Da Young Lee
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Kyu Suk Kim
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Federico Pietrocola
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Seol Hee Hong
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Shee Eun Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Kyoung-Shim Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Tae-Shin Park
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Dong-Hee Choi
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Yu-Jin Jeong
- Department of Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jong-Hwan Park
- Department of Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Hyeon Sik Kim
- Medical Photonic Research Center, Korea Photonics Technology Institute, Gwangju, 61007, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Yong Sook Kim
- Biomedical Research Institute, Chonnam National University Hospital, Gwangju, 61469, Republic of Korea
| | - Joon Tae Park
- Department of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jae-Ho Cho
- Combinatorial Tumor Immunotherapy Medical Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Gil-Woo Lee
- Combinatorial Tumor Immunotherapy Medical Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Ji Hyeon Lee
- Department of Biological Sciences and Bioengineering, Inha University, Incheon, 22212, Republic of Korea
| | - Hyon E Choy
- Department of Microbiology, Chonnam National University Medical School, 264 Seoyang-ro, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Sang Chul Park
- Future Life and Society Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea
| | - Chul-Ho Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.
| | - Joon Haeng Rhee
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- Combinatorial Tumor Immunotherapy Medical Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- Department of Microbiology, Chonnam National University Medical School, 264 Seoyang-ro, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
| | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona Institute of Science and Technology (BIST), Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain.
- Altos Labs, Cambridge Institute of Science, Cambridge, UK.
| | - Kyung A Cho
- Department of Biochemistry, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- MediSpan, Inc, Bundang-gu, Gyeonggi-do, 13486, Republic of Korea.
- Center for Creative Biomedical Scientists, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
- Future Life and Society Research Center, Chonnam National University Medical School, Hwasun-gun, Jeonnam-do, 58128, Republic of Korea.
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41
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Yılmaz D, Mathavan N, Wehrle E, Kuhn GA, Müller R. Mouse models of accelerated aging in musculoskeletal research for assessing frailty, sarcopenia, and osteoporosis - A review. Ageing Res Rev 2024; 93:102118. [PMID: 37935249 DOI: 10.1016/j.arr.2023.102118] [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: 07/03/2023] [Revised: 10/01/2023] [Accepted: 11/03/2023] [Indexed: 11/09/2023]
Abstract
Musculoskeletal aging encompasses the decline in bone and muscle function, leading to conditions such as frailty, osteoporosis, and sarcopenia. Unraveling the underlying molecular mechanisms and developing effective treatments are crucial for improving the quality of life for those affected. In this context, accelerated aging models offer valuable insights into these conditions by displaying the hallmarks of human aging. Herein, this review focuses on relevant mouse models of musculoskeletal aging with particular emphasis on frailty, osteoporosis, and sarcopenia. Among the discussed models, PolgA mice in particular exhibit hallmarks of musculoskeletal aging, presenting early-onset frailty, as well as reduced bone and muscle mass that closely resemble human musculoskeletal aging. Ultimately, findings from these models hold promise for advancing interventions targeted at age-related musculoskeletal disorders, effectively addressing the challenges posed by musculoskeletal aging and associated conditions in humans.
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Affiliation(s)
- Dilara Yılmaz
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | | | - Esther Wehrle
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; AO Research Institute Davos, Davos Platz, Switzerland
| | - Gisela A Kuhn
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
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Castle J, Shaw G, Weller D, Fielder E, Egnuni T, Singh M, Skinner R, von Zglinicki T, Clifford SC, Short SC, Miwa S, Hicks D. In vivo modeling recapitulates radiotherapy delivery and late-effect profile for childhood medulloblastoma. Neurooncol Adv 2024; 6:vdae091. [PMID: 38946880 PMCID: PMC11212071 DOI: 10.1093/noajnl/vdae091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024] Open
Abstract
Background Medulloblastoma (MB) is the most common malignant pediatric brain tumor, with 5-year survival rates > 70%. Cranial radiotherapy (CRT) to the whole brain, with posterior fossa boost (PFB), underpins treatment for non-infants; however, radiotherapeutic insult to the normal brain has deleterious consequences to neurocognitive and physical functioning, and causes accelerated aging/frailty. Approaches to ameliorate radiotherapy-induced late-effects are lacking and a paucity of appropriate model systems hinders their development. Methods We have developed a clinically relevant in vivo model system that recapitulates the radiotherapy dose, targeting, and developmental stage of childhood medulloblastoma. Consistent with human regimens, age-equivalent (postnatal days 35-37) male C57Bl/6J mice received computerized tomography image-guided CRT (human-equivalent 37.5 Gy EQD2, n = 12) ± PFB (human-equivalent 48.7 Gy EQD2, n = 12), via the small animal radiation research platform and were longitudinally assessed for > 12 months. Results CRT was well tolerated, independent of PFB receipt. Compared to a sham-irradiated group (n = 12), irradiated mice were significantly frailer following irradiation (frailty index; P = .0002) and had reduced physical functioning; time to fall from a rotating rod (rotarod; P = .026) and grip strength (P = .006) were significantly lower. Neurocognitive deficits were consistent with childhood MB survivors; irradiated mice displayed significantly worse working memory (Y-maze; P = .009) and exhibited spatial memory deficits (Barnes maze; P = .029). Receipt of PFB did not induce a more severe late-effect profile. Conclusions Our in vivo model mirrored childhood MB radiotherapy and recapitulated features observed in the late-effect profile of MB survivors. Our clinically relevant model will facilitate both the elucidation of novel/target mechanisms underpinning MB late effects and the development of novel interventions for their amelioration.
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Affiliation(s)
- Jemma Castle
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Gary Shaw
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James’s University Hospital, Beckett St, Leeds, UK
| | - Dominic Weller
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Edward Fielder
- Biosciences Institute, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Teklu Egnuni
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James’s University Hospital, Beckett St, Leeds, UK
| | - Mankaran Singh
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Roderick Skinner
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Thomas von Zglinicki
- Biosciences Institute, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Steven C Clifford
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Susan C Short
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James’s University Hospital, Beckett St, Leeds, UK
| | - Satomi Miwa
- Biosciences Institute, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Debbie Hicks
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
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Thomas C, Erni R, Wu JY, Fischer F, Lamers G, Grigolon G, Mitchell SJ, Zarse K, Carreira EM, Ristow M. A naturally occurring polyacetylene isolated from carrots promotes health and delays signatures of aging. Nat Commun 2023; 14:8142. [PMID: 38065964 PMCID: PMC10709416 DOI: 10.1038/s41467-023-43672-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 11/16/2023] [Indexed: 12/18/2023] Open
Abstract
To ameliorate or even prevent signatures of aging in ultimately humans, we here report the identification of a previously undescribed polyacetylene contained in the root of carrots (Daucus carota), hereafter named isofalcarintriol, which we reveal as potent promoter of longevity in the nematode C. elegans. We assign the absolute configuration of the compound as (3 S,8 R,9 R,E)-heptadeca-10-en-4,6-diyne-3,8,9-triol, and develop a modular asymmetric synthesis route for all E-isofalcarintriol stereoisomers. At the molecular level, isofalcarintriol affects cellular respiration in mammalian cells, C. elegans, and mice, and interacts with the α-subunit of the mitochondrial ATP synthase to promote mitochondrial biogenesis. Phenotypically, this also results in decreased mammalian cancer cell growth, as well as improved motility and stress resistance in C. elegans, paralleled by reduced protein accumulation in nematodal models of neurodegeneration. In addition, isofalcarintriol supplementation to both wild-type C57BL/6NRj mice on high-fat diet, and aged mice on chow diet results in improved glucose metabolism, increased exercise endurance, and attenuated parameters of frailty at an advanced age. Given these diverse effects on health parameters in both nematodes and mice, isofalcarintriol might become a promising mitohormesis-inducing compound to delay, ameliorate, or prevent aging-associated diseases in humans.
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Affiliation(s)
- Carolin Thomas
- Laboratory of Energy Metabolism, Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute (ETH) Zurich, Schorenstrasse 16, 8603, Schwerzenbach, Switzerland
| | - Reto Erni
- Laboratory of Chemistry and Applied Biosciences, Department of Organic Chemistry, Swiss Federal Institute (ETH) Zurich, Vladimir-Prelog-Weg 1-5/10, Zurich, 8093, Switzerland
- Biozentrum, University of Basel, Basel, 4056, Switzerland
| | - Jia Yee Wu
- Laboratory of Energy Metabolism, Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute (ETH) Zurich, Schorenstrasse 16, 8603, Schwerzenbach, Switzerland
| | - Fabian Fischer
- Laboratory of Energy Metabolism, Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute (ETH) Zurich, Schorenstrasse 16, 8603, Schwerzenbach, Switzerland
- CureVac SE, Tübingen, 72076, Germany
| | - Greta Lamers
- Laboratory of Energy Metabolism, Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute (ETH) Zurich, Schorenstrasse 16, 8603, Schwerzenbach, Switzerland
| | - Giovanna Grigolon
- Laboratory of Energy Metabolism, Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute (ETH) Zurich, Schorenstrasse 16, 8603, Schwerzenbach, Switzerland
| | - Sarah J Mitchell
- Ludwig Princeton Branch, Princeton University, Princeton, NJ, 08540, USA
| | - Kim Zarse
- Laboratory of Energy Metabolism, Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute (ETH) Zurich, Schorenstrasse 16, 8603, Schwerzenbach, Switzerland
- Institute of Experimental Endocrinology, Charité Universitätsmedizin Berlin, Berlin, 10117, Germany
| | - Erick M Carreira
- Laboratory of Chemistry and Applied Biosciences, Department of Organic Chemistry, Swiss Federal Institute (ETH) Zurich, Vladimir-Prelog-Weg 1-5/10, Zurich, 8093, Switzerland.
| | - Michael Ristow
- Laboratory of Energy Metabolism, Institute of Translational Medicine, Department of Health Sciences and Technology, Swiss Federal Institute (ETH) Zurich, Schorenstrasse 16, 8603, Schwerzenbach, Switzerland.
- Institute of Experimental Endocrinology, Charité Universitätsmedizin Berlin, Berlin, 10117, Germany.
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Marcozzi S, Bigossi G, Giuliani ME, Giacconi R, Piacenza F, Cardelli M, Brunetti D, Segala A, Valerio A, Nisoli E, Lattanzio F, Provinciali M, Malavolta M. Cellular senescence and frailty: a comprehensive insight into the causal links. GeroScience 2023; 45:3267-3305. [PMID: 37792158 PMCID: PMC10643740 DOI: 10.1007/s11357-023-00960-w] [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: 08/03/2023] [Accepted: 09/24/2023] [Indexed: 10/05/2023] Open
Abstract
Senescent cells may have a prominent role in driving inflammation and frailty. The impact of cellular senescence on frailty varies depending on the assessment tool used, as it is influenced by the criteria or items predominantly affected by senescent cells and the varying weights assigned to these items across different health domains. To address this challenge, we undertook a thorough review of all available studies involving gain- or loss-of-function experiments as well as interventions targeting senescent cells, focusing our attention on those studies that examined outcomes based on the individual frailty phenotype criteria or specific items used to calculate two humans (35 and 70 items) and one mouse (31 items) frailty indexes. Based on the calculation of a simple "evidence score," we found that the burden of senescent cells related to musculoskeletal and cerebral health has the strongest causal link to frailty. We deem that insight into these mechanisms may not only contribute to clarifying the role of cellular senescence in frailty but could additionally provide multiple therapeutic opportunities to help the future development of a desirable personalized therapy in these extremely heterogeneous patients.
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Affiliation(s)
- Serena Marcozzi
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy
- Scientific Direction, IRCCS INRCA, 60124, Ancona, Italy
| | - Giorgia Bigossi
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy
| | - Maria Elisa Giuliani
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy
| | - Robertina Giacconi
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy
| | - Francesco Piacenza
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy
| | - Maurizio Cardelli
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy
| | - Dario Brunetti
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20126, Milan, Italy
- Department of Medical Biotechnology and Translational Medicine, University of Milan, 20129, Milan, Italy
| | - Agnese Segala
- Department of Molecular and Translational Medicine, University of Brescia, Viale Europa, 11, 25123, Brescia, Italy
| | - Alessandra Valerio
- Department of Molecular and Translational Medicine, University of Brescia, Viale Europa, 11, 25123, Brescia, Italy
| | - Enzo Nisoli
- Center for Study and Research On Obesity, Department of Medical Biotechnology and Translational Medicine, University of Milan, Via Vanvitelli, 32, 20129, Milan, Italy
| | | | - Mauro Provinciali
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy
| | - Marco Malavolta
- Advanced Technology Center for Aging Research and Geriatric Mouse Clinic, IRCCS INRCA, 60121, Ancona, Italy.
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Brown AM, Ganjayi MS, Baumann CW. RAD140 (Testolone) negatively impacts skeletal muscle adaptation, frailty status and mortality risk in female mice. Clin Exp Pharmacol Physiol 2023; 50:973-983. [PMID: 37758180 DOI: 10.1111/1440-1681.13824] [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: 05/12/2023] [Revised: 07/25/2023] [Accepted: 08/28/2023] [Indexed: 10/03/2023]
Abstract
RAD140 is a selective androgen receptor modulator that produces anabolic effects within skeletal muscle. Thus, RAD140 may be effective at treating sarcopenia. No long-term studies have investigated how RAD140 influences strength in ageing muscle. This study aimed to determine how 10 weeks of RAD140 supplementation impacts strength, recovery from exercise, and overall health in ageing mice. Young and adult females were assigned to receive RAD140 (5 mg/kg) or a control solution. Dorsiflexor muscles were exposed to repeated bouts of eccentric contractions, and torque was measured before and after each bout. Adaptive potential and strength gains were calculated to assess the efficacy of RAD140 in muscle, while frailty status and mortality risk were used to measure health span. Supplementation of RAD140 increased frailty status and mortality risk in the young and adult treated groups compared to the controls (p ≤ 0.042). RAD140 decreased adaptive potential in young (p = 0.040) but not adult mice (p = 0.688). Torque did not differ between groups after 2-3 weeks of recovery (p ≥ 0.135). In conclusion, long-term RAD140 supplementation reduced indices of overall health and failed to improve strength in female mice, suggesting that RAD140 (at a 5mg/kg dosage) may be more detrimental than beneficial in delaying or preventing sarcopenia.
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Affiliation(s)
- Austin M Brown
- Honors Tutorial College, Ohio University, Athens, Ohio, USA
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, Ohio, USA
| | - Muni Swamy Ganjayi
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, Ohio, USA
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
| | - Cory W Baumann
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, Ohio, USA
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, Ohio, USA
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Contartese D, Di Sarno L, Salamanna F, Martini L, Fini M, Giavaresi G, Veronesi F. Exploring In Vivo Models of Musculoskeletal Frailty: A Comprehensive Systematic Review. Int J Mol Sci 2023; 24:16948. [PMID: 38069274 PMCID: PMC10706801 DOI: 10.3390/ijms242316948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 11/23/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Musculoskeletal frailty-a common and debilitating condition linked to aging and chronic diseases-presents a major public health issue. In vivo models have become a key tool for researchers as they investigate the condition's underlying mechanisms and develop effective interventions. This systematic review examines the current body of research on in vivo models of musculoskeletal frailty, without any time constraints. To achieve this aim, we utilized three electronic databases and incorporated a total of 11 studies. Our investigation delves into varied animal models that simulate specific features of musculoskeletal frailty, including muscle loss, bone density reduction, and functional decline. Furthermore, we examine the translational prospects of these models in augmenting our comprehension of musculoskeletal frailty and streamlining the production of groundbreaking therapeutic approaches. This review provides significant insights and guidance for healthcare researchers and practitioners who aim to combat musculoskeletal frailty, ultimately enhancing the quality of life for older adults and individuals affected by this condition.
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Affiliation(s)
- Deyanira Contartese
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (F.S.); (L.M.); (G.G.); (F.V.)
| | - Laura Di Sarno
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (F.S.); (L.M.); (G.G.); (F.V.)
| | - Francesca Salamanna
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (F.S.); (L.M.); (G.G.); (F.V.)
| | - Lucia Martini
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (F.S.); (L.M.); (G.G.); (F.V.)
| | - Milena Fini
- Scientific Direction, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy;
| | - Gianluca Giavaresi
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (F.S.); (L.M.); (G.G.); (F.V.)
| | - Francesca Veronesi
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano 1/10, 40136 Bologna, Italy; (D.C.); (F.S.); (L.M.); (G.G.); (F.V.)
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Kapphan LM, Nguyen VTT, Heinrich I, Tüscher O, Passauer P, Schwiertz A, Endres K. Comparison of Frailty and Chronological Age as Determinants of the Murine Gut Microbiota in an Alzheimer's Disease Mouse Model. Microorganisms 2023; 11:2856. [PMID: 38138000 PMCID: PMC10745811 DOI: 10.3390/microorganisms11122856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/15/2023] [Accepted: 11/21/2023] [Indexed: 12/24/2023] Open
Abstract
The ageing of an organism is associated with certain features of functional decline that can be assessed at the cellular level (e.g., reduced telomere length, loss of proteostasis, etc.), but also at the organismic level. Frailty is an independent syndrome that involves increased multidimensional age-related deficits, heightens vulnerability to stressors, and involves physical deficits in mainly the locomotor/muscular capacity, but also in physical appearance and cognition. For sporadic Alzheimer's disease, age per se is one of the most relevant risk factors, but frailty has also been associated with this disease. Therefore, we aimed to answer the two following questions within a cross-sectional study: (1) do Alzheimer's model mice show increased frailty, and (2) what changes of the microbiota occur concerning chronological age or frailty? Indeed, aged 5xFAD mice showed increased frailty compared to wild type littermates. In addition, 5xFAD mice had significantly lower quantities of Bacteroides spp. when only considering frailty, and lower levels of Bacteroidetes in terms of both frailty and chronological age compared to their wild type littermates. Thus, the quality of ageing-as assessed by frailty measures-should be taken into account to unravel potential changes in the gut microbial community in Alzheimer's disease.
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Affiliation(s)
- Laura Malina Kapphan
- Department of Psychiatry and Psychotherapy, University Medical Center Johannes Gutenberg-University Mainz, 55131 Mainz, Germany; (L.M.K.); (V.T.T.N.); (I.H.); (O.T.)
| | - Vu Thu Thuy Nguyen
- Department of Psychiatry and Psychotherapy, University Medical Center Johannes Gutenberg-University Mainz, 55131 Mainz, Germany; (L.M.K.); (V.T.T.N.); (I.H.); (O.T.)
| | - Isabel Heinrich
- Department of Psychiatry and Psychotherapy, University Medical Center Johannes Gutenberg-University Mainz, 55131 Mainz, Germany; (L.M.K.); (V.T.T.N.); (I.H.); (O.T.)
| | - Oliver Tüscher
- Department of Psychiatry and Psychotherapy, University Medical Center Johannes Gutenberg-University Mainz, 55131 Mainz, Germany; (L.M.K.); (V.T.T.N.); (I.H.); (O.T.)
| | - Pamela Passauer
- MVZ Institut für Mikroökologie GmbH, 35745 Herborn, Germany; (P.P.); (A.S.)
| | - Andreas Schwiertz
- MVZ Institut für Mikroökologie GmbH, 35745 Herborn, Germany; (P.P.); (A.S.)
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, University Medical Center Johannes Gutenberg-University Mainz, 55131 Mainz, Germany; (L.M.K.); (V.T.T.N.); (I.H.); (O.T.)
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48
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Kim HJ, Jung DW, Williams DR. Age Is Just a Number: Progress and Obstacles in the Discovery of New Candidate Drugs for Sarcopenia. Cells 2023; 12:2608. [PMID: 37998343 PMCID: PMC10670210 DOI: 10.3390/cells12222608] [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: 10/23/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/25/2023] Open
Abstract
Sarcopenia is a disease characterized by the progressive loss of skeletal muscle mass and function that occurs with aging. The progression of sarcopenia is correlated with the onset of physical disability, the inability to live independently, and increased mortality. Due to global increases in lifespan and demographic aging in developed countries, sarcopenia has become a major socioeconomic burden. Clinical therapies for sarcopenia are based on physical therapy and nutritional support, although these may suffer from low adherence and variable outcomes. There are currently no clinically approved drugs for sarcopenia. Consequently, there is a large amount of pre-clinical research focusing on discovering new candidate drugs and novel targets. In this review, recent progress in this research will be discussed, along with the challenges that may preclude successful translational research in the clinic. The types of drugs examined include mitochondria-targeting compounds, anti-diabetes agents, small molecules that target non-coding RNAs, protein therapeutics, natural products, and repositioning candidates. In light of the large number of drugs and targets being reported, it can be envisioned that clinically approved pharmaceuticals to prevent the progression or even mitigate sarcopenia may be within reach.
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Affiliation(s)
| | - Da-Woon Jung
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea;
| | - Darren Reece Williams
- New Drug Targets Laboratory, School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea;
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Green CL, Trautman ME, Chaiyakul K, Jain R, Alam YH, Babygirija R, Pak HH, Sonsalla MM, Calubag MF, Yeh CY, Bleicher A, Novak G, Liu TT, Newman S, Ricke WA, Matkowskyj KA, Ong IM, Jang C, Simcox J, Lamming DW. Dietary restriction of isoleucine increases healthspan and lifespan of genetically heterogeneous mice. Cell Metab 2023; 35:1976-1995.e6. [PMID: 37939658 PMCID: PMC10655617 DOI: 10.1016/j.cmet.2023.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/01/2023] [Accepted: 10/11/2023] [Indexed: 11/10/2023]
Abstract
Low-protein diets promote health and longevity in diverse species. Restriction of the branched-chain amino acids (BCAAs) leucine, isoleucine, and valine recapitulates many of these benefits in young C57BL/6J mice. Restriction of dietary isoleucine (IleR) is sufficient to promote metabolic health and is required for many benefits of a low-protein diet in C57BL/6J males. Here, we test the hypothesis that IleR will promote healthy aging in genetically heterogeneous adult UM-HET3 mice. We find that IleR improves metabolic health in young and old HET3 mice, promoting leanness and glycemic control in both sexes, and reprograms hepatic metabolism in a sex-specific manner. IleR reduces frailty and extends the lifespan of male and female mice, but to a greater degree in males. Our results demonstrate that IleR increases healthspan and longevity in genetically diverse mice and suggests that IleR, or pharmaceuticals that mimic this effect, may have potential as a geroprotective intervention.
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Affiliation(s)
- Cara L Green
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Michaela E Trautman
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Krittisak Chaiyakul
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Raghav Jain
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Integrated Program in Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Yasmine H Alam
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Reji Babygirija
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Heidi H Pak
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Michelle M Sonsalla
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Comparative Biomedical Sciences Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Mariah F Calubag
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Chung-Yang Yeh
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Anneliese Bleicher
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Grace Novak
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Teresa T Liu
- George M. O'Brien Center of Research Excellence, Department of Urology, University of Wisconsin, Madison, WI 93705, USA
| | - Sarah Newman
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Will A Ricke
- George M. O'Brien Center of Research Excellence, Department of Urology, University of Wisconsin, Madison, WI 93705, USA
| | - Kristina A Matkowskyj
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, USA; University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA
| | - Irene M Ong
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI 53705, USA; University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA; Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Cholsoon Jang
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Judith Simcox
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Integrated Program in Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Howard Hughes Medical Institute, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Dudley W Lamming
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA; Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA; Comparative Biomedical Sciences Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA; University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA.
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50
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Alvarez-Kuglen M, Rodriguez D, Qin H, Ninomiya K, Fiengo L, Farhy C, Hsu WM, Havas A, Feng GS, Roberts AJ, Anderson RM, Serrano M, Adams PD, Sharpee TO, Terskikh AV. Imaging-based chromatin and epigenetic age, ImAge, quantitates aging and rejuvenation. RESEARCH SQUARE 2023:rs.3.rs-3479973. [PMID: 37986947 PMCID: PMC10659560 DOI: 10.21203/rs.3.rs-3479973/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Biomarkers of biological age that predict the risk of disease and expected lifespan better than chronological age are key to efficient and cost-effective healthcare1-3. To advance a personalized approach to healthcare, such biomarkers must reliably and accurately capture individual biology, predict biological age, and provide scalable and cost-effective measurements. We developed a novel approach - image-based chromatin and epigenetic age (ImAge) that captures intrinsic progressions of biological age, which readily emerge as principal changes in the spatial organization of chromatin and epigenetic marks in single nuclei without regression on chronological age. ImAge captured the expected acceleration or deceleration of biological age in mice treated with chemotherapy or following a caloric restriction regimen, respectively. ImAge from chronologically identical mice inversely correlated with their locomotor activity (greater activity for younger ImAge), consistent with the widely accepted role of locomotion as an aging biomarker across species. Finally, we demonstrated that ImAge is reduced following transient expression of OSKM cassette in the liver and skeletal muscles and reveals heterogeneity of in vivo reprogramming. We propose that ImAge represents the first-in-class imaging-based biomarker of aging with single-cell resolution.
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Affiliation(s)
| | | | - Haodong Qin
- UCSD, Department of Physics, La Jolla, CA 92093, USA
| | | | | | - Chen Farhy
- Sanford Burnham Prebys, La Jolla CA 92037, USA
| | - Wei-Mien Hsu
- Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Aaron Havas
- Sanford Burnham Prebys, La Jolla CA 92037, USA
| | - Gen-Sheng Feng
- UCSD School of Medicine, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | | | | | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona 08028, Spain
- Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
- Altos Labs, Cambridge Institute of Science, Granta Park CB21 6GP, UK
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