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Zhang A, Meecham-Garcia G, Nguyen Hong C, Xie P, Kern CC, Zhang B, Chapman H, Gems D. Characterization of Effects of mTOR Inhibitors on Aging in Caenorhabditis elegans. J Gerontol A Biol Sci Med Sci 2024; 79:glae196. [PMID: 39150882 PMCID: PMC11374883 DOI: 10.1093/gerona/glae196] [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: 03/21/2024] [Indexed: 08/18/2024] Open
Abstract
Pharmacological inhibition of the mechanistic target of rapamycin (mTOR) signaling pathway with rapamycin can extend lifespan in several organisms. Although this includes the nematode Caenorhabditis elegans, effects in this species are relatively weak and sometimes difficult to reproduce. Here we test effects of drug dosage and timing of delivery to establish the upper limits of its capacity to extend life, and investigate drug effects on age-related pathology and causes of mortality. Liposome-mediated rapamycin treatment throughout adulthood showed a dose-dependent effect, causing a maximal 21.9% increase in mean lifespan, but shortening of lifespan at the highest dose, suggesting drug toxicity. Rapamycin treatment of larvae delayed development, weakly reduced fertility and modestly extended lifespan. By contrast, treatment initiated later in life robustly increased lifespan, even from Day 16 (or ~70 years in human terms). The rapalog temsirolimus extended lifespan similarly to rapamycin, but effects of everolimus were weaker. As in mouse, rapamycin had mixed effects on age-related pathologies, inhibiting one (uterine tumor growth) but not several others, suggesting a segmental antigeroid effect. These findings should usefully inform future experimental studies with rapamycin and rapalogs in C. elegans.
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Affiliation(s)
- Aihan Zhang
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Gadea Meecham-Garcia
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Chiminh Nguyen Hong
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Peiyun Xie
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Carina C Kern
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Bruce Zhang
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Hannah Chapman
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
| | - David Gems
- Institute of Healthy Ageing, and Research Department of Genetics, Evolution and Environment, University College London, London, UK
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2
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Zhang X, Gao H, Chen X, Liu Z, Wang H, Cui M, Li Y, Yu Y, Chen S, Xing X, Chen L, Li D, Zeng X, Wang Q. Identification of sanguinarine as a novel antagonist for perfluorooctanoate/perfluorooctane sulfonate-induced senescence of hepatocytes: An integrated computational and experimental analysis. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135583. [PMID: 39180998 DOI: 10.1016/j.jhazmat.2024.135583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 08/09/2024] [Accepted: 08/18/2024] [Indexed: 08/27/2024]
Abstract
Perfluorooctanoate (PFOA) and perfluorooctane sulfonate (PFOS), two prominent per- and polyfluoroalkyl substances (PFASs), are potentially harmful to many human organs. However, there only exist limited methods to mitigate their health hazards. The aim of this study is to combine a bioinformatics analysis with in vitro experiments to discover small molecules that can alleviate liver damage caused by PFOA/PFOS. We identified 192 and 82 key genes related to hepatocytes exposed to PFOA and PFOS, respectively. The functional enrichment analysis of key genes suggested cellular senescence may be important in PFOA/PFOS-induced hepatotoxicity. The in vitro models revealed that PFOA/PFOS led to hepatocyte senescence by increasing the activity of SA-β-gal, inducing mitochondrial dysfunction, impacting cell cycle arrest, and elevating the expressions of p21, p53, IL-1β, and SASP-related cytokines. The drug-target gene set enrichment analysis method was employed to compare the transcriptome data from the Gene Expression Omnibus database (GEO), Comparative Toxicogenomics Database (CTD), and the high-throughput experiment- and reference-guided database (HERB), and 21 traditional Chinese medicines (TCMs) were identified that may alleviate PFOA/PFOS-induced liver aging. The experimental results of co-exposure to PFOA/PFOS and TCMs showed that sanguinarine has particular promise in alleviating cellular senescence caused by PFOA/PFOS. Further investigations revealed that the mTOR-p53 signaling pathway was involved in PFOA/PFOS-mediated hepatic senescence and can be blocked using sanguinarine.
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Affiliation(s)
- Xue Zhang
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Huan Gao
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Xiaoyu Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Ziqi Liu
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Han Wang
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Mengxing Cui
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yajie Li
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China; Infinitus (China) Company Ltd, Guangzhou 510623, China
| | - Yongjiang Yu
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Shen Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Xiumei Xing
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Liping Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Daochuan Li
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Xiaowen Zeng
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Qing Wang
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
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3
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Wang W, Zhou K, Wang L, Qin Q, Liu H, Qin L, Yang M, Yuan L, Liu C. Aging in chronic lung disease: Will anti-aging therapy be the key to the cure? Eur J Pharmacol 2024; 980:176846. [PMID: 39067566 DOI: 10.1016/j.ejphar.2024.176846] [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: 11/27/2023] [Revised: 07/24/2024] [Accepted: 07/24/2024] [Indexed: 07/30/2024]
Abstract
Chronic lung disease is the third leading cause of death globally, imposing huge burden of death, disability and healthcare costs. However, traditional pharmacotherapy has relatively limited effects in improving the cure rate and reducing the mortality of chronic lung disease. Thus, new treatments are urgently needed for the prevention and treatment of chronic lung disease. It is particularly noteworthy that, multiple aging-related phenotypes were involved in the occurrence and development of chronic lung disease, such as blocked proliferation, telomere attrition, mitochondrial dysfunction, epigenetic alterations, altered nutrient perception, stem cell exhaustion, chronic inflammation, etc. Consequently, senescent cells induce a series of pathological changes in the lung, such as immune dysfunction, airway remodeling, oxidative stress and regenerative dysfunction, which is a critical issue that needs special attention in chronic lung diseases. Therefore, anti-aging interventions may bring new insights into the treatment of chronic lung diseases. In this review, we elaborate the involvement of aging in chronic lung disease and further discuss the application and prospects of anti-aging therapy.
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Affiliation(s)
- Weijie Wang
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, Hunan, China; National Experimental Teaching Demonstration Center for Medical Function, China
| | - Kai Zhou
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, Hunan, China; National Experimental Teaching Demonstration Center for Medical Function, China
| | - Leyuan Wang
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, Hunan, China; National Experimental Teaching Demonstration Center for Medical Function, China
| | - Qiuyan Qin
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, Hunan, China; National Experimental Teaching Demonstration Center for Medical Function, China
| | - Huijun Liu
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, Hunan, China; National Experimental Teaching Demonstration Center for Medical Function, China
| | - Ling Qin
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, Hunan, China
| | - Ming Yang
- Centre for Asthma and Respiratory Disease, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle and Hunter Medical Research Institute, Callaghan, New South Wales, Australia
| | - Lin Yuan
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, Hunan, China; National Experimental Teaching Demonstration Center for Medical Function, China.
| | - Chi Liu
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Physiology, School of Basic Medicine Science, Central South University, Changsha, Hunan, China; Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Changsha, Hunan, China; National Experimental Teaching Demonstration Center for Medical Function, China.
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4
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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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5
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Jiang Z, He Q, Wezeman J, Darvas M, Ladiges W. A cocktail of rapamycin, acarbose, and phenylbutyrate prevents age-related cognitive decline in mice by targeting multiple aging pathways. GeroScience 2024; 46:4855-4868. [PMID: 38755466 PMCID: PMC11336069 DOI: 10.1007/s11357-024-01198-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: 03/05/2024] [Accepted: 05/08/2024] [Indexed: 05/18/2024] Open
Abstract
Aging is a primary risk factor for cognitive impairment and exacerbates multiple biological processes in the brain, including but not limited to nutrient sensing, insulin signaling, and histone deacetylation activity. Therefore, a pharmaceutical intervention of aging that targets distinct but overlapping pathways provides a basis for testing combinations of drugs as a cocktail. Our previous study showed that middle-aged mice treated with a cocktail of rapamycin, acarbose, and phenylbutyrate for 3 months had increased resilience to age-related cognitive decline. This finding provided the rationale to investigate the transcriptomic and molecular changes within the brains of mice that received this cocktail treatment or control treatment. Transcriptomic profiles were generated through ribonucleic acid (RNA) sequencing, and pathway analysis was performed by gene set enrichment analysis to evaluate the overall RNA message effect of the drug cocktail. Molecular endpoints representing aging pathways were measured using immunohistochemistry to further validate the attenuation of brain aging in the hippocampus of mice that received the cocktail treatment, each individual drug or control. Results showed that biological processes that enhance aging were suppressed, with an increased trend of autophagy in the brains of mice given the drug cocktail. The molecular endpoint assessments indicated that treatment with the drug cocktail was overall more effective than any of the individual drugs for relieving cognitive impairment by targeting multiple aging pathways.
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Affiliation(s)
- Zhou Jiang
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| | - Qianpei He
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| | - Jackson Wezeman
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA
| | - Martin Darvas
- Department of Laboratory Medicine and Pathology, School of Medicine, University of Washington, Seattle, WA, USA
| | - Warren Ladiges
- Department of Comparative Medicine, School of Medicine, University of Washington, Seattle, WA, USA.
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6
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Fujimoto T, Teraishi F, Kanehira N, Tajima T, Sakurai Y, Kondo N, Yamagami M, Kuwada A, Morihara A, Kitamatsu M, Fujimura A, Suzuki M, Takaguchi Y, Shigeyasu K, Fujiwara T, Michiue H. BNCT pancreatic cancer treatment strategy with glucose-conjugated boron drug. Biomaterials 2024; 309:122605. [PMID: 38754291 DOI: 10.1016/j.biomaterials.2024.122605] [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: 02/19/2024] [Revised: 05/01/2024] [Accepted: 05/05/2024] [Indexed: 05/18/2024]
Abstract
Multidisciplinary therapy centered on radical surgery for resectable pancreatic cancer is expected to prolong prognosis, but relies on CA19-9 biomarker levels to determine treatment strategy. Boron neutron capture therapy (BNCT) is a chemoradiotherapy using tumor hyperaccumulator boron drugs and neutron irradiation. The purpose of this study is to investigate novel boron drug agents for BNCT for pancreatic cancer. Bioinformatics was used to evaluate the uptake of current boron amino acid (BPA) drugs for BNCT into pancreatic cancer. The expression of the amino acid transporter LAT1, a BPA uptake transporter, was low in pancreatic cancer and even lower in high CA19-9 pancreatic cancer. In contrast, the glucose transporter was high in high CA19-9 pancreatic cancers and inversely correlated with LAT1 expression. Considering the low EPR effect in pancreatic cancer, we synthesized a small molecule Glucose-BSH, which is boron BSH bound to glucose, and confirmed its specific uptake in pancreatic cancer. uptake of Glucose-BSH was confirmed in an environment compatible with the tumor microenvironment. The therapeutic efficacy and safety of Glucose-BSH by therapeutic neutron irradiation were confirmed with BNCT. We report Glucose-BSH boron drug discovery study of a Precision Medicine BNCT with application to high CA19-9 pancreatic cancer.
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Affiliation(s)
- Takuya Fujimoto
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan; Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Fuminori Teraishi
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Noriyuki Kanehira
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan; Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Tomoyuki Tajima
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Yoshinori Sakurai
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Natsuko Kondo
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Masahiro Yamagami
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Atsushi Kuwada
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Akira Morihara
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan
| | - Mizuki Kitamatsu
- Department of Applied Chemistry, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Atsushi Fujimura
- Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan; Department of Cellular Physiology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Okayama, 700-8558, Japan
| | - Minoru Suzuki
- Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, Japan
| | - Yutaka Takaguchi
- Graduate School of Environmental, Life, Natural Science, Okayama University, 3-1-1 Tsushima-Naka, Kita-ku, Okayama, 700-8530, Japan; Department of Material Design and Engineering, Faculty of Sustainable Design, University of Toyama, Toyama, 930-8555, Japan
| | - Kunitoshi Shigeyasu
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Toshiyoshi Fujiwara
- Department of Gastroenterological Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan
| | - Hiroyuki Michiue
- Neutron Therapy Research Center, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama City, Okayama, 700-8558, Japan.
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7
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Arcas JM, Oudaha K, González A, Fernández-Trillo J, Peralta FA, Castro-Marsal J, Poyraz S, Taberner F, Sala S, de la Peña E, Gomis A, Viana F. The ion channel TRPM8 is a direct target of the immunosuppressant rapamycin in primary sensory neurons. Br J Pharmacol 2024; 181:3192-3214. [PMID: 38741464 DOI: 10.1111/bph.16402] [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: 09/14/2023] [Revised: 02/29/2024] [Accepted: 03/10/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND AND PURPOSE The mechanistic target of rapamycin (mTOR) signalling pathway is a key regulator of cell growth and metabolism. Its deregulation is implicated in several diseases. The macrolide rapamycin, a specific inhibitor of mTOR, has immunosuppressive, anti-inflammatory and antiproliferative properties. Recently, we identified tacrolimus, another macrolide immunosuppressant, as a novel activator of TRPM8 ion channels, involved in cold temperature sensing, thermoregulation, tearing and cold pain. We hypothesized that rapamycin may also have agonist activity on TRPM8 channels. EXPERIMENTAL APPROACH Using calcium imaging and electrophysiology in transfected HEK293 cells and wildtype or Trpm8 KO mouse DRG neurons, we characterized rapamycin's effects on TRPM8 channels. We also examined the effects of rapamycin on tearing in mice. KEY RESULTS Micromolar concentrations of rapamycin activated rat and mouse TRPM8 channels directly and potentiated cold-evoked responses, effects also observed in human TRPM8 channels. In cultured mouse DRG neurons, rapamycin increased intracellular calcium levels almost exclusively in cold-sensitive neurons. Responses were markedly decreased in Trpm8 KO mice or by TRPM8 channel antagonists. Cutaneous cold thermoreceptor endings were also activated by rapamycin. Topical application of rapamycin to the eye surface evokes tearing in mice by a TRPM8-dependent mechanism. CONCLUSION AND IMPLICATIONS These results identify TRPM8 cationic channels in sensory neurons as novel molecular targets of the immunosuppressant rapamycin. These findings may help explain some of its therapeutic effects after topical application to the skin and the eye surface. Moreover, rapamycin could be used as an experimental tool in the clinic to explore cold thermoreceptors.
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Affiliation(s)
- José Miguel Arcas
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Khalid Oudaha
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Alejandro González
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Jorge Fernández-Trillo
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | | | - Júlia Castro-Marsal
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Seyma Poyraz
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Francisco Taberner
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Salvador Sala
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Elvira de la Peña
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Ana Gomis
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Félix Viana
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
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8
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Sawoo R, Bishayi B. TLR4/TNFR1 blockade suppresses STAT1/STAT3 expression and increases SOCS3 expression in modulation of LPS-induced macrophage responses. Immunobiology 2024; 229:152840. [PMID: 39126792 DOI: 10.1016/j.imbio.2024.152840] [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: 12/15/2023] [Revised: 07/15/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024]
Abstract
Due to the urgent need to create appropriate treatment techniques, which are currently unavailable, LPS-induced sepsis has become a serious concern on a global scale. The primary active component in the pathophysiology of inflammatory diseases such as sepsis is the Gram-negative bacterial lipopolysaccharide (LPS). LPS interacts with cell surface TLR4 in macrophages, causing the formation of reactive oxygen species (ROS), TNF-α, IL-1β and oxidative stress. It also significantly activates the MAPKs and NF-κB pathway. Excessive production of pro-inflammatory cytokines is one of the primary characteristic features in the onset and progression of inflammation. Cytokines mainly signal through the JAK/STAT pathway. We hypothesize that blocking of TLR4 along with TNFR1 might be beneficial in suppressing the effects of STAT1/STAT3 due to the stimulation of SOCS3 proteins. Prior to the LPS challenge, the macrophages were treated with antibodies against TLR4 and TNFR1 either individually or in combination. On analysis of the macrophage populations by flowcytometry, it was seen that receptor blockade facilitated the phenotypic shift of the M1 macrophages towards M2 resulting in lowered oxidative stress. Blocking of TLR4/TNFR1 upregulated the SOCS3 and mTOR expressions that enabled the transition of inflammatory M1 macrophages towards the anti-inflammatory M2 phenotype, which might be crucial in curbing the inflammatory responses. Also the reduction in the production of inflammatory cytokines such as IL-6, IL-1β due to the reduction in the activation of the STAT1 and STAT3 molecules was observed in our combination treatment group. All these results indicated that neutralization of both TLR4 and TNFR1 might provide new insights in establishing an alternative therapeutic strategy for LPS-sepsis.
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Affiliation(s)
- Ritasha Sawoo
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta 700009, West Bengal, India
| | - Biswadev Bishayi
- Department of Physiology, Immunology Laboratory, University of Calcutta, University Colleges of Science and Technology, 92 APC Road, Calcutta 700009, West Bengal, India.
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9
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Kosakamoto H, Sakuma C, Okada R, Miura M, Obata F. Context-dependent impact of the dietary non-essential amino acid tyrosine on Drosophila physiology and longevity. SCIENCE ADVANCES 2024; 10:eadn7167. [PMID: 39213345 PMCID: PMC11364096 DOI: 10.1126/sciadv.adn7167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 07/26/2024] [Indexed: 09/04/2024]
Abstract
Dietary protein intake modulates growth, reproduction, and longevity by stimulating amino acid (AA)-sensing pathways. Essential AAs are often considered as limiting nutrients during protein scarcity, and the role of dietary non-essential AAs (NEAAs) is less explored. Although tyrosine has been reported to be crucial for sensing protein restriction in Drosophila larvae, its effect on adult physiology and longevity remains unclear. Here, using a synthetic diet, we perform a systematic investigation of the effect of single NEAA deprivation on nutrient-sensing pathways, reproductive ability, starvation resistance, feeding behavior, and life span in adult female flies. Specifically, dietary tyrosine deprivation decreases internal tyrosine levels and fecundity, influences AA-sensing machineries, and extends life span. These nutritional responses are not observed under higher total AA intake or in infertile female flies, suggesting a context-dependent influence of dietary tyrosine. Our findings highlight the unique role of tyrosine as a potentially limiting nutrient, underscoring its value for dietary interventions aimed at enhancing health span.
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Affiliation(s)
- Hina Kosakamoto
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Chisako Sakuma
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Rina Okada
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Masayuki Miura
- Department of Genetics, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Fumiaki Obata
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
- Laboratory of Molecular Cell Biology and Development, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
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10
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Gallage S, Irvine EE, Barragan Avila JE, Reen V, Pedroni SMA, Duran I, Ranvir V, Khadayate S, Pombo J, Brookes S, Heide D, Dharmalingham G, Choudhury AI, Singh I, Herranz N, Vernia S, Heikenwalder M, Gil J, Withers DJ. Ribosomal S6 kinase 1 regulates inflammaging via the senescence secretome. NATURE AGING 2024:10.1038/s43587-024-00695-z. [PMID: 39210150 DOI: 10.1038/s43587-024-00695-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 07/30/2024] [Indexed: 09/04/2024]
Abstract
Inhibition of S6 kinase 1 (S6K1) extends lifespan and improves healthspan in mice, but the underlying mechanisms are unclear. Cellular senescence is a stable growth arrest accompanied by an inflammatory senescence-associated secretory phenotype (SASP). Cellular senescence and SASP-mediated chronic inflammation contribute to age-related pathology, but the specific role of S6K1 has not been determined. Here we show that S6K1 deletion does not reduce senescence but ameliorates inflammation in aged mouse livers. Using human and mouse models of senescence, we demonstrate that reduced inflammation is a liver-intrinsic effect associated with S6K deletion. Specifically, we show that S6K1 deletion results in reduced IRF3 activation; impaired production of cytokines, such as IL1β; and reduced immune infiltration. Using either liver-specific or myeloid-specific S6K knockout mice, we also demonstrate that reduced immune infiltration and clearance of senescent cells is a hepatocyte-intrinsic phenomenon. Overall, deletion of S6K reduces inflammation in the liver, suggesting that suppression of the inflammatory SASP by loss of S6K could underlie the beneficial effects of inhibiting this pathway on healthspan and lifespan.
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Affiliation(s)
- Suchira Gallage
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
- University of Tübingen, Faculty of Medicine, Institute for Interdisciplinary Research on Cancer Metabolism and Chronic Inflammation, M3-Research Center for Malignome, Metabolome and Microbiome, Tübingen, Germany
| | - Elaine E Irvine
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Jose Efren Barragan Avila
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Virinder Reen
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Silvia M A Pedroni
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Imanol Duran
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Vikas Ranvir
- Emmy Noether Research Group, Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Epigenetic Machineries and Cancer, Heidelberg, Germany
| | - Sanjay Khadayate
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Joaquim Pombo
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Sharon Brookes
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Danijela Heide
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Gopuraja Dharmalingham
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Agharul I Choudhury
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Indrabahadur Singh
- Emmy Noether Research Group, Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Epigenetic Machineries and Cancer, Heidelberg, Germany
| | - Nicolás Herranz
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Santiago Vernia
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK
| | - Mathias Heikenwalder
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany.
- University of Tübingen, Faculty of Medicine, Institute for Interdisciplinary Research on Cancer Metabolism and Chronic Inflammation, M3-Research Center for Malignome, Metabolome and Microbiome, Tübingen, Germany.
| | - Jesús Gil
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK.
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK.
| | - Dominic J Withers
- Medical Research Council Laboratory of Medical Sciences (LMS), London, UK.
- Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, London, UK.
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11
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Hong B, Bea S, Ko HY, Kim WJ, Cho YM, Shin JY. Sodium-Glucose Cotransporter-2 Inhibitors, Dulaglutide, and Risk for Dementia : A Population-Based Cohort Study. Ann Intern Med 2024. [PMID: 39186787 DOI: 10.7326/m23-3220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/28/2024] Open
Abstract
BACKGROUND Both sodium-glucose cotransporter-2 (SGLT2) inhibitors and glucagon-like peptide-1 receptor agonists (GLP-1 RAs) may have neuroprotective effects in patients with type 2 diabetes (T2D). However, their comparative effectiveness in preventing dementia remains uncertain. OBJECTIVE To compare the risk for dementia between SGLT2 inhibitors and dulaglutide (a GLP-1 RA). DESIGN Target trial emulation study. SETTING Nationwide health care data of South Korea obtained from the National Health Insurance Service between 2010 and 2022. PATIENTS Patients aged 60 years or older who have T2D and are initiating treatment with SGLT2 inhibitors or dulaglutide. MEASUREMENTS The primary outcome was the presumed clinical onset of dementia. The date of onset was defined as the year before the date of dementia diagnosis, assuming that the time between the onset of dementia and diagnosis was 1 year. The 5-year risk ratios and risk differences comparing SGLT2 inhibitors with dulaglutide were estimated in a 1:2 propensity score-matched cohort adjusted for confounders. RESULTS Overall, 12 489 patients initiating SGLT2 inhibitor treatment (51.9% dapagliflozin and 48.1% empagliflozin) and 1075 patients initiating dulaglutide treatment were included. In the matched cohort, over a median follow-up of 4.4 years, the primary outcome event occurred in 69 participants in the SGLT2 inhibitor group and 43 in the dulaglutide group. The estimated risk difference was -0.91 percentage point (95% CI, -2.45 to 0.63 percentage point), and the estimated risk ratio was 0.81 (CI, 0.56 to 1.16). LIMITATION Residual confounding is possible; there was no adjustment for hemoglobin A1c levels or duration of diabetes; the study is not representative of newer drugs, including more effective GLP-1 RAs; and the onset of dementia was not measured directly. CONCLUSION Under conventional statistical criteria, a risk for dementia between 2.5 percentage points lower and 0.6 percentage point greater for SGLT2 inhibitors than for dulaglutide was estimated to be highly compatible with the data from this study. However, whether these findings generalize to newer GLP-1 RAs is uncertain. Thus, further studies incorporating newer drugs within these drug classes and better addressing residual confounding are required. PRIMARY FUNDING SOURCE Ministry of Food and Drug Safety of South Korea.
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Affiliation(s)
- Bin Hong
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea (B.H., H.Y.K.)
| | - Sungho Bea
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea, and Division of Pharmacoepidemiology and Pharmacoeconomics,Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts (S.B.)
| | - Hwa Yeon Ko
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea (B.H., H.Y.K.)
| | - Woo Jung Kim
- Department of Psychiatry, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin; Institute of Behavioral Sciences in Medicine, Yonsei University College of Medicine, Seoul; and Institute for Innovation in Digital Healthcare, Yonsei University, Seoul, South Korea (W.J.K.)
| | - Young Min Cho
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea (Y.M.C.)
| | - Ju-Young Shin
- School of Pharmacy and Department of Biohealth Regulatory Science, Sungkyunkwan University, Suwon, and Department of Clinical Research Design & Evaluation, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, South Korea (J.-Y.S.)
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12
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Sirtori CR, Castiglione S, Pavanello C. METFORMIN: FROM DIABETES TO CANCER TO PROLONGATION OF LIFE. Pharmacol Res 2024; 208:107367. [PMID: 39191336 DOI: 10.1016/j.phrs.2024.107367] [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: 05/27/2024] [Revised: 08/12/2024] [Accepted: 08/21/2024] [Indexed: 08/29/2024]
Abstract
The metformin molecule dates back to over a century, but its clinical use started in the '50s. Since then, its use in diabetics has grown constantly, with over 150 million users today. The therapeutic profile also expanded, with improved understanding of novel mechanisms. Metformin has a major activity on insulin resistance, by acting on the insulin receptors and mitochondria, most likely by activation of the adenosine monophosphate-activated kinase. These and associated mechanisms lead to significant lipid lowering and body weight loss. An anti-cancer action has come up in recent years, with mechanisms partly dependent on the mitochondrial activity and also on phosphatidylinositol 3-kinase resistance occurring in some malignant tumors. The potential of metformin to raise life-length is the object of large ongoing studies and of several basic and clinical investigations. The present review article will attempt to investigate the basic mechanisms behind these diverse activities and the potential clinical benefits. Metformin may act on transcriptional activity by histone modification, DNA methylation and miRNAs. An activity on age-associated inflammation (inflammaging) may occur via activation of the nuclear factor erythroid 2 related factor and changes in gut microbiota. A senolytic activity, leading to reduction of cells with the senescent associated secretory phenotype, may be crucial in lifespan prolongation as well as in ancillary properties in age-associated diseases, such as Parkinson's disease. Telomere prolongation may be related to the activity on mitochondrial respiratory factor 1 and on peroxisome gamma proliferator coactivator 1-alpha. Very recent observations on the potential to act on the most severe neurological disorders, such as amyotrophic lateral sclerosis and frontotemporal dementia, have raised considerable hope.
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Affiliation(s)
- Cesare R Sirtori
- Center of Dyslipidemias, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; Centro E. Grossi Paoletti, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy.
| | - Sofia Castiglione
- Center of Dyslipidemias, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; Centro E. Grossi Paoletti, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Chiara Pavanello
- Center of Dyslipidemias, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy; Centro E. Grossi Paoletti, Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
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13
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Wang YY, Zou LP, Xu KF, Xu WS, Zhang MN, Lu Q, Tian XL, Pang LY, He W, Wang QH, Gao Y, Liu LY, Chen XQ, Ma SF, Chen HM, Dun S, Yang XY, Luo XM, Huang LL, Li YF. Long-term safety and influence on growth in patients receiving sirolimus: a pooled analysis. Orphanet J Rare Dis 2024; 19:299. [PMID: 39148107 PMCID: PMC11325711 DOI: 10.1186/s13023-024-03243-5] [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: 12/11/2022] [Accepted: 06/05/2024] [Indexed: 08/17/2024] Open
Abstract
BACKGROUND Sirolimus is increasingly utilized in treating diseases associated with mTOR pathway overactivation. Despite its potential, the lack of evidence regarding its long-term safety across all age groups, particularly in pediatric patients, has limited its further application. This study aims to assess the long-term safety of sirolimus, with a specific focus on its impact on growth patterns in pediatric patients. METHODS This pooled analysis inlcudes two prospective cohort studies spanning 10 years, including 1,738 participants (aged 5 days to 69 years) diagnosed with tuberous sclerosis and/or lymphangioleiomyomatosis. All participants were mTOR inhibitor-naive and received 1 mg/m²/day of sirolimus, with dose adjustments during a two-week titration period to maintain trough blood concentrations between 5 and 10 ng/ml (maximum dose 2 mg). Indicators of physical growth, hematopoietic, liver, renal function, and blood lipid levels were all primary outcomes and were analyzed. The adverse events and related management were also recorded. RESULTS Sirolimus administration did not lead to deviations from normal growth ranges, but higher doses exhibited a positive association with Z-scores exceeding 2 SD in height, weight, and BMI. Transient elevations in red blood cell and white blood cell counts, along with hyperlipidemia, were primarily observed within the first year of treatment. Other measured parameters remained largely unchanged, displaying only weak correlations with drug use. Stomatitis is the most common adverse event (920/1738, 52.9%). In adult females, menstrual disorders were observed in 48.5% (112/217). CONCLUSIONS Sirolimus's long-term administration is not associated with adverse effects on children's physical growth pattern, nor significant alterations in hematopoietic, liver, renal function, or lipid levels. A potential dose-dependent influence on growth merits further exploration. TRIAL REGISTRATION Pediatric patients: Chinese clinical trial registry, No. ChiCTR-OOB-15,006,535. Adult patients: ClinicalTrials, No. NCT03193892.
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Affiliation(s)
- Yang-Yang Wang
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Li-Ping Zou
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China.
- Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, 100069, China.
| | - Kai-Feng Xu
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China.
| | - Wen-Shuai Xu
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Meng-Na Zhang
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Qian Lu
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xin-Lun Tian
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China
| | - Ling-Yu Pang
- Department of Neurology, Hebei Children's Hospital, Hebei, China
| | - Wen He
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Qiu-Hong Wang
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yang Gao
- Deyang People's Hospital, Sichuan, China
| | - Li-Ying Liu
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xiao-Qiao Chen
- Department of Pediatrics, The 904th Hospital of Joint Logistic Support Force, Jiangsu, China
| | - Shu-Fang Ma
- Department of Pediatrics, Binzhou Medical University Hospital, Shandong, China
| | - Hui-Min Chen
- Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, 100069, China
| | - Shuo Dun
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xiao-Yan Yang
- Department of Pediatrics, The First Medical Center of PLA General Hospital, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xiao-Mei Luo
- Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, 100069, China
| | - Lu-Lu Huang
- Department of Pediatrics, Zhujiang Hospital of Southern Medical University, Guangdong, China
| | - Yu-Fen Li
- Department of Pediatrics, Shandong Linyi People's Hospital, Shandong, China
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14
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Wang J, Zhang M, Wang H. Emerging Landscape of Mesenchymal Stem Cell Senescence Mechanisms and Implications on Therapeutic Strategies. ACS Pharmacol Transl Sci 2024; 7:2306-2325. [PMID: 39144566 PMCID: PMC11320744 DOI: 10.1021/acsptsci.4c00284] [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: 05/15/2024] [Revised: 07/05/2024] [Accepted: 07/09/2024] [Indexed: 08/16/2024]
Abstract
Mesenchymal stem cells (MSCs) hold significant promise for regenerative medicine and tissue engineering due to their unique multipotent differentiation ability and immunomodulatory properties. MSC therapy is widely discussed and utilized in clinical treatment. However, during both in vitro expansion and in vivo transplantation, MSCs are prone to senescence, an irreversible growth arrest characterized by morphological, gene expression, and functional changes in genomic regulation. The microenvironment surrounding MSCs plays a crucial role in modulating their senescence phenotype, influenced by factors such as hypoxia, inflammation, and aging status. Numerous strategies targeting MSC senescence have been developed, including senolytics and senomorphic agents, antioxidant and exosome therapies, mitochondrial transfer, and niche modulation. Novel approaches addressing replicative senescence have also emerged. This paper comprehensively reviews the current molecular manifestations of MSC senescence, addresses the environmental impact on senescence, and highlights potential therapeutic strategies to mitigate senescence in MSC-based therapies. These insights aim to enhance the efficacy and understanding of MSC therapies.
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Affiliation(s)
- Jing Wang
- Department
of Cellular and Molecular Medicine, University
of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Muqing Zhang
- Institute
of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, Maryland, 21215, United States
| | - Hu Wang
- Institute
of Cell Engineering, School of Medicine, Johns Hopkins University, Baltimore, Maryland, 21215, United States
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15
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Troise D, Mercuri S, Infante B, Losappio V, Cirolla L, Netti GS, Ranieri E, Stallone G. mTOR and SGLT-2 Inhibitors: Their Synergistic Effect on Age-Related Processes. Int J Mol Sci 2024; 25:8676. [PMID: 39201363 PMCID: PMC11354721 DOI: 10.3390/ijms25168676] [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: 06/25/2024] [Revised: 07/31/2024] [Accepted: 08/02/2024] [Indexed: 09/02/2024] Open
Abstract
The aging process contributes significantly to the onset of chronic diseases, which are the primary causes of global mortality, morbidity, and healthcare costs. Numerous studies have shown that the removal of senescent cells from tissues extends lifespan and reduces the occurrence of age-related diseases. Consequently, there is growing momentum in the development of drugs targeting these cells. Among them, mTOR and SGLT-2 inhibitors have garnered attention due to their diverse effects: mTOR inhibitors regulate cellular growth, metabolism, and immune responses, while SGLT-2 inhibitors regulate glucose reabsorption in the kidneys, resulting in various beneficial metabolic effects. Importantly, these drugs may act synergistically by influencing senescence processes and pathways. Although direct studies on the combined effects of mTOR inhibition and SGLT-2 inhibition on age-related processes are limited, this review aims to highlight the potential synergistic benefits of these drugs in targeting senescence.
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Affiliation(s)
- Dario Troise
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
- Renal Medicine and Baxter Novum, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 14152 Stockholm, Sweden
| | - Silvia Mercuri
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Barbara Infante
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Vincenzo Losappio
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Luciana Cirolla
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Giuseppe Stefano Netti
- Unit of Clinical Pathology, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Elena Ranieri
- Unit of Clinical Pathology, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
| | - Giovanni Stallone
- Nephrology, Dialysis and Transplantation Unit, Advanced Research Center on Kidney Aging (A.R.K.A.), Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy
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16
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Deng J, Yang Q, Zhu W, Zhang Y, Lin M, She J, Li J, Xiao Y, Xiao J, Xu X, He H, Zhu B, Ding Y. Neuregulin 4 Attenuates Podocyte Injury and Proteinuria in Part by Activating AMPK/mTOR-Mediated Autophagy in Mice. J Cell Biochem 2024:e30634. [PMID: 39091188 DOI: 10.1002/jcb.30634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 07/14/2024] [Accepted: 07/18/2024] [Indexed: 08/04/2024]
Abstract
In this study, we investigate the effect of neuregulin 4 (NRG4) on podocyte damage in a mouse model of diabetic nephropathy (DN) and we elucidate the underlying molecular mechanisms. In vivo experiments were conducted using a C57BL/6 mouse model of DN to determine the effect of NRG4 on proteinuria and podocyte injury, and in vitro experiments were performed with conditionally immortalized mouse podocytes treated with high glucose and NRG4 to assess the protective effects of NRG4 on podocyte injury. Autophagy-related protein levels and related signaling pathways were evaluated both in vivo and in vitro. The involvement of the adenosine monophosphate-activated protein kinase (AMPK)/mammalian target of rapamycin (mTOR) pathway was detected using chloroquine or AMPK inhibitors. The results showed that the AMPK/mTOR pathway was involved in the protective roles of NRG4 against high glucose-mediated podocyte injury. Also, NRG4 significantly decreased albuminuria in DN mice. PAS staining indicated that NRG4 mitigated glomerular volume and mesangium expansion in DN mice. Consistently, western blot and RT-PCR analyses confirmed that NRG4 decreased the expression of pro-fibrotic molecules in the glomeruli of DN mice. The immunofluorescence results showed that NRG4 retained expression of podocin and nephrin, whereas transmission electron microscopy revealed that NRG4 alleviated podocyte injury. In DN mice, NRG4 decreased podocyte apoptosis and increased expression of nephrin and podocin, while decreasing the expression of desmin and HIF1α. Overall, NRG4 improved albuminuria, glomerulosclerosis, glomerulomegaly, and hypoxia in DN mice. The in vitro experiments showed that NRG4 inhibited HG-induced podocyte injury and apoptosis. Furthermore, autophagy of the glomeruli decreased in DN mice, but reactivated following NRG4 intervention. NRG4 intervention was found to partially activate autophagy via the AMPK/mTOR signaling pathway. Consequently, when the AMPK/mTOR pathway was suppressed or autophagy was inhibited, the beneficial effects of NRG4 intervention on podocyte injury were diminished. These results indicate that NRG4 intervention attenuates podocyte injury and apoptosis by promoting autophagy in the kidneys of DN mice, in part, by activating the AMPK/mTOR signaling pathway.
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Affiliation(s)
- Juntian Deng
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Qiansheng Yang
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Wanyu Zhu
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Yanhua Zhang
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Meng Lin
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Juyan She
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Jing Li
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Yuxin Xiao
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Jun Xiao
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Xinyue Xu
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
| | - Hebei He
- Guangdong Provincial Key Laboratory of Speed Capability, The Guangzhou Key Laboratory of Precision Orthopedics and Regenerative Medicine, Department of Sports Medicine, The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, China
- Department of Orthopedics, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Biao Zhu
- Department of Stomatology, Fuxing Hospital, Capital Medical University, Beijing, China
| | - Yan Ding
- Department of Diagnostics, School of Medicine, Hunan University of Medicine, Huaihua, Hunan, China
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17
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Prajapat SK, Maharana KC, Singh S. Mitochondrial dysfunction in the pathogenesis of endothelial dysfunction. Mol Cell Biochem 2024; 479:1999-2016. [PMID: 37642880 DOI: 10.1007/s11010-023-04835-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/14/2023] [Indexed: 08/31/2023]
Abstract
Cardiovascular diseases (CVDs) are a matter of concern worldwide, and mitochondrial dysfunction is one of the major contributing factors. Vascular endothelial dysfunction has a major role in the development of atherosclerosis because of the abnormal chemokine secretion, inflammatory mediators, enhancement of LDL oxidation, cytokine elevation, and smooth muscle cell proliferation. Endothelial cells transfer oxygen from the pulmonary circulatory system to the tissue surrounding the blood vessels, and a majority of oxygen is transferred to the myocardium by endothelial cells, which utilise a small amount of oxygen to generate ATP. Free radicals of oxide are produced by mitochondria, which are responsible for cellular oxygen uptake. Increased mitochondrial ROS generation and reduction in agonist-stimulated eNOS activation and nitric oxide bioavailability were directly linked to the observed change in mitochondrial dynamics, resulting in various CVDs and endothelial dysfunction. Presently, the manuscript mainly focuses on endothelial dysfunction, providing a deep understanding of the various features of mitochondrial mechanisms that are used to modulate endothelial dysfunction. We talk about recent findings and approaches that may make it possible to detect mitochondrial dysfunction as a potential biomarker for risk assessment and diagnosis of endothelial dysfunction. In the end, we cover several targets that may reduce mitochondrial dysfunction through both direct and indirect processes and assess the impact of several different classes of drugs in the context of endothelial dysfunction.
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Affiliation(s)
- Suresh Kumar Prajapat
- National Institute of Pharmaceutical Education and Research, Export Promotion Industrial Park (EPIP) Zandaha Road, Hajipur, Bihar, India
| | - Krushna Ch Maharana
- National Institute of Pharmaceutical Education and Research, Export Promotion Industrial Park (EPIP) Zandaha Road, Hajipur, Bihar, India
| | - Sanjiv Singh
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Export Promotions Industrial Park (EPIP), Industrial Area, Dist: Vaishali, Hajipur, Bihar, 844102, India.
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18
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Noureddine S, Schneider A, Strader S, Zhu X, Dhahbi J, Allsopp R, Willcox DC, Donlon TA, Shimabukuro M, Higa M, Suzuki M, Torigoe T, Ashiqueali S, Yadav H, Willcox BJ, Masternak MM. Circulating microRNA profile of long-lived Okinawans identifies novel potential targets for optimizing lifespan and health span. Aging Cell 2024; 23:e14191. [PMID: 38751007 PMCID: PMC11320357 DOI: 10.1111/acel.14191] [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: 12/19/2023] [Revised: 04/20/2024] [Accepted: 04/22/2024] [Indexed: 08/15/2024] Open
Abstract
Nonagenarians and centenarians serve as successful examples of aging and extended longevity, showcasing robust regulation of biological mechanisms and homeostasis. Given that human longevity is a complex field of study that navigates molecular and biological mechanisms influencing aging, we hypothesized that microRNAs, a class of small noncoding RNAs implicated in regulating gene expression at the post-transcriptional level, are differentially regulated in the circulatory system of young, middle-aged, and nonagenarian individuals. We sequenced circulating microRNAs in Okinawan males and females <40, 50-80, and >90 years of age accounting for FOXO3 genetic variations of single nucleotide polymorphism (SNP) rs2802292 (TT - common vs. GT - longevity) and validated the findings through RT-qPCR. We report five microRNAs exclusively upregulated in both male and female nonagenarians with the longevity genotype, play predictive functional roles in TGF-β, FoxO, AMPK, Pi3K-Akt, and MAPK signaling pathways. Our findings suggest that these microRNAs upregulated in nonagenarians may provide novel insight into enhanced lifespan and health span. This discovery warrants further exploration into their roles in human aging and longevity.
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Affiliation(s)
- Sarah Noureddine
- University of Central Florida College of Medicine, Burnett School of Biomedical SciencesOrlandoFloridaUSA
| | | | - Sydney Strader
- University of Central Florida College of Medicine, Burnett School of Biomedical SciencesOrlandoFloridaUSA
| | - Xiang Zhu
- University of Central Florida College of Medicine, Burnett School of Biomedical SciencesOrlandoFloridaUSA
| | - Joseph Dhahbi
- Department of Medical Education, School of MedicineCalifornia University of Science & MedicineColtonCaliforniaUSA
| | - Richard Allsopp
- Institute for Biogenesis Research, John A. Burns School of MedicineUniversity of Hawai'iHonoluluHawaiiUSA
- Center of Biomedical Research Excellence for Translational Research on Aging, Kuakini Medical CenterHonoluluHawaiiUSA
- Okinawa Research Center for Longevity ScienceUrasoeJapan
| | - D. Craig Willcox
- Center of Biomedical Research Excellence for Translational Research on Aging, Kuakini Medical CenterHonoluluHawaiiUSA
- Okinawa Research Center for Longevity ScienceUrasoeJapan
- Department of Human WelfareOkinawa International UniversityGinowanJapan
| | - Timothy A. Donlon
- Center of Biomedical Research Excellence for Translational Research on Aging, Kuakini Medical CenterHonoluluHawaiiUSA
- Department of Cell and Molecular Biology, John A. Burns School of MedicineUniversity of Hawai'iHonoluluHawaiiUSA
| | - Michio Shimabukuro
- Okinawa Research Center for Longevity ScienceUrasoeJapan
- Department of Diabetes, Endocrinology and MetabolismFukushima Medical University, School of MedicineFukushimaJapan
| | - Moritake Higa
- Diabetes and Life‐Style Related Disease Center, Tomishiro Central HospitalTomishiroJapan
| | - Makoto Suzuki
- Okinawa Research Center for Longevity ScienceUrasoeJapan
| | - Trevor Torigoe
- Institute for Biogenesis Research, John A. Burns School of MedicineUniversity of Hawai'iHonoluluHawaiiUSA
| | - Sarah Ashiqueali
- University of Central Florida College of Medicine, Burnett School of Biomedical SciencesOrlandoFloridaUSA
| | - Hariom Yadav
- USF Center for Microbiome ResearchMicrobiomes Institute, University of South Florida Morsani College of MedicineTampaFloridaUSA
| | - Bradley J. Willcox
- Center of Biomedical Research Excellence for Translational Research on Aging, Kuakini Medical CenterHonoluluHawaiiUSA
- Okinawa Research Center for Longevity ScienceUrasoeJapan
- Department of Geriatric Medicine, John A. Burns School of MedicineUniversity of Hawai'iHonoluluHawaiiUSA
| | - Michal M. Masternak
- University of Central Florida College of Medicine, Burnett School of Biomedical SciencesOrlandoFloridaUSA
- Department of Head and Neck SurgeryPoznan University of Medical SciencesPoznanPoland
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19
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Ozcan M, Abdellatif M, Javaheri A, Sedej S. Risks and Benefits of Intermittent Fasting for the Aging Cardiovascular System. Can J Cardiol 2024; 40:1445-1457. [PMID: 38354947 DOI: 10.1016/j.cjca.2024.02.004] [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: 12/15/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/16/2024] Open
Abstract
Population aging and the associated increase in cardiovascular disease rates pose serious threats to global public health. Different forms of fasting have become an increasingly attractive strategy to directly address aging and potentially limit or delay the onset of cardiovascular diseases. A growing number of experimental studies and clinical trials indicate that the amount and timing of food intake as well as the daily time window during which food is consumed, are crucial determinants of cardiovascular health. Indeed, intermittent fasting counteracts the molecular hallmarks of cardiovascular aging and promotes different aspects of cardiometabolic health, including blood pressure and glycemic control, as well as body weight reduction. In this report, we summarize current evidence from randomized clinical trials of intermittent fasting on body weight and composition as well as cardiovascular and metabolic risk factors. Moreover, we critically discuss the preventive and therapeutic potential of intermittent fasting, but also possible detrimental effects in the context of cardiovascular aging and related disease. We delve into the physiological mechanisms through which intermittent fasting might improve cardiovascular health, and raise important factors to consider in the design of clinical trials on the efficacy of intermittent fasting to reduce major adverse cardiovascular events among aged individuals at high risk of cardiovascular disease. We conclude that despite growing evidence and interest among the lay and scientific communities in the cardiovascular health-improving effects of intermittent fasting, further research efforts and appropriate caution are warranted before broadly implementing intermittent fasting regimens, especially in elderly persons.
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Affiliation(s)
- Mualla Ozcan
- Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Mahmoud Abdellatif
- Department of Cardiology, Medical University of Graz, Graz, Austria; BioTechMed Graz, Graz, Austria
| | - Ali Javaheri
- Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA; John J. Cochran Veterans Affairs Medical Center, St. Louis, Missouri, USA
| | - Simon Sedej
- Department of Cardiology, Medical University of Graz, Graz, Austria; BioTechMed Graz, Graz, Austria; Institute of Physiology, Faculty of Medicine, University of Maribor, Maribor, Slovenia.
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20
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Zheng K, Qian Y, Wang H, Song D, You H, Hou B, Han F, Zhu Y, Feng F, Lam SM, Shui G, Li X. Combinatorial lipidomics and proteomics underscore erythrocyte lipid membrane aberrations in the development of adverse cardio-cerebrovascular complications in maintenance hemodialysis patients. Redox Biol 2024; 76:103295. [PMID: 39159596 PMCID: PMC11378344 DOI: 10.1016/j.redox.2024.103295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/21/2024] [Accepted: 07/31/2024] [Indexed: 08/21/2024] Open
Abstract
Age-associated deterioration of physiological functions occur at heterogeneous rates across individual organs. A granular evaluation of systemic metabolic mediators of aging in a healthy human cohort (n = 225) identified prominent increases in circulating uremic toxins that were recapitulated in mice, on which we further characterized the aging phenome across five peripheral organs. Our multi-omics analyses connected systemic aging profiles primarily to kidney metabolism, uncovering a metabolic association between localized glucosylceramide (GluCer) accretion and renal functional decline. Elevated GluCers were also associated with higher risk of deaths in an independent cohort of aged individuals (n = 271). We report GluCer-mTOR signaling commencing at late middle-age that disrupts mitophagy and undermines mitochondrial respiration in kidney. Conserved between human and mice, GluCer-mediated renal dysfunction is female-biased and modulated by intracellular purines. Our work provides molecular basis for the sexually disparate effects of mTOR inhibition on mammalian lifespan, possibly ascribed to the evolutionary cost of female reproduction.
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Affiliation(s)
- Ke Zheng
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Yujun Qian
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China; Department of Nephrology, Jiangsu Province Hospital/The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Haiyun Wang
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Dan Song
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Hui You
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Bo Hou
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Fei Han
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Yicheng Zhu
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Feng Feng
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Sin Man Lam
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| | - Xuemei Li
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China.
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21
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Zhu J, Zhu X, Shi C, Li Q, Jiang Y, Chen X, Sun P, Jin Y, Wang T, Chen J. Integrative analysis of aging-related genes reveals CEBPA as a novel therapeutic target in non-small cell lung cancer. Cancer Cell Int 2024; 24:267. [PMID: 39068458 PMCID: PMC11282817 DOI: 10.1186/s12935-024-03457-4] [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: 02/22/2024] [Accepted: 07/20/2024] [Indexed: 07/30/2024] Open
Abstract
BACKGROUND To explore the impact of ARGs on the prognosis of NSCLC, and its correlation with clinicopathological parameters and immune microenvironment. Preliminary research on the biological functions of CEBPA in NSCLC. METHODS Using consensus clustering analysis to identify molecular subtypes of ARGs in NSCLC patients; employing LASSO regression and multivariate Cox analysis to select 7 prognostic risk genes and construct a prognostic risk model; validating independent prognostic factors of NSCLC using forest plot analysis; analyzing immune microenvironment correlations using ESTIMATE and ssGSEA; assessing correlations between prognostic risk genes via qPCR and Western blot in NSCLC; measuring mRNA and protein expression levels of knocked down and overexpressed CEBPA in NSCLC using CCK-8 and EdU assays; evaluating the effects of knocked down and overexpressed CEBPA on cell proliferation using Transwell experiments; examining the correlation of CEBPA with T cells and B cells using mIHC analysis. RESULTS Consensus clustering analysis identified three molecular subtypes, suggesting significant differential expression of these ARGs in NSCLC prognosis and clinical pathological parameters. There was significant differential expression between the two risk groups in the prognostic risk model, with P < 0.001. The risk score of the prognostic risk model was also P < 0.001. CEBPA exhibited higher mRNA and protein expression levels in NSCLC cell lines. Knockdown of CEBPA significantly reduced mRNA and protein expression levels of CEBPB, YWHAZ, ABL1, and CDK1 in H1650 and A549 cells. siRNA-mediated knockdown of CEBPA markedly inhibited proliferation, migration, and invasion of NSCLC cells, whereas overexpression of CEBPA showed the opposite trend. mIHC results indicated a significant increase in CD3 + CD4+, CD3 + CD8+, and CD20 + cell counts in the high CEBPA expression group. CONCLUSIONS The risk score of the prognostic risk model can serve as an independent prognostic factor, guiding the diagnosis and treatment of NSCLC. CEBPA may serve as a potential tumor biomarker and immune target, facilitating further exploration of the biological functions and immunological relevance in NSCLC.
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Affiliation(s)
- Jiaqi Zhu
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Xiaoren Zhu
- Department of Radiotherapy and Oncology, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, China
| | - Conglin Shi
- Cancer Immunotherapy Center, Cancer Research Institute, Xuzhou Medical University, Xuzhou, China
| | - Qixuan Li
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Yun Jiang
- Department of Burn and Plastic Surgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China
| | - Xingyou Chen
- School of Medicine, Nantong University, Nantong, China
| | - Pingping Sun
- Department of Clinical Biobank, The Institute of Oncology, Affiliated Hospital of Nantong University, Nantong, China
| | - Yi Jin
- Department of Rheumatology, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China.
| | - Tianyi Wang
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China.
| | - Jianle Chen
- Department of Thoracic Surgery, Affiliated Hospital of Nantong University, Medical School of Nantong University, Nantong, China.
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22
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Watanabe M, Tsugeno Y, Sato T, Higashide M, Umetsu A, Furuhashi M, Ohguro H. Inhibition of mTOR differently modulates planar and subepithelial fibrogenesis in human conjunctival fibroblasts. Graefes Arch Clin Exp Ophthalmol 2024:10.1007/s00417-024-06481-2. [PMID: 39042147 DOI: 10.1007/s00417-024-06481-2] [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: 12/11/2023] [Revised: 03/22/2024] [Accepted: 04/01/2024] [Indexed: 07/24/2024] Open
Abstract
PURPOSE In the current investigation, the effects of the mTOR inhibitors, Rapa and Torin1 on the TGF-β2-induced conjunctival fibrogenesis were studied. STUDY DESIGN Experimental research. METHODS 2D and 3D cultures of HconF were subjected to the following analyses; (1) planar proliferation evaluated by TEER (2D), (2) Seahorse metabolic analyses (2D), (3) subepithelial proliferation evaluated by the 3D spheroids' size and hardness, and (4) the mRNA expression of ECM proteins and their regulators (2D and 3D). RESULT Rapa or Torin1 both significantly increased planar proliferation in the non-TGF-β2-treated 2D HconF cells, but in the TGF-β2-treated cells, this proliferation was inhibited by Rapa and enhanced by Torin1. Although Rapa or Torin1 did not affect cellular metabolism in the non-TGF-β2-treated HconF cells, mTOR inhibitors significantly decreased and increased the mitochondrial respiration and the glycolytic capacity, respectively, under conditions of TGF-β2-induced fibrogenesis. Subepithelial proliferation, as evidenced by the hardness of the 3D spheroids, was markedly down-regulated by both Rapa and Torin1 independent of TGF-β2. The mRNA expressions of several ECM molecules and their regulators fluctuated in the cases of 2D vs 3D and TGF-β2 untreated vs treated cultures. CONCLUSION The present findings indicate that mTOR inhibitors have the ability to increase and to reduce planar and subepithelial proliferation in HconF cells, depending on the inhibitor being used.
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Affiliation(s)
- Megumi Watanabe
- Department of Ophthalmology, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan.
| | - Yuri Tsugeno
- Department of Ophthalmology, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan
| | - Tatsuya Sato
- Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan
- Cellular Physiology and Signal Transduction, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan
| | - Megumi Higashide
- Department of Ophthalmology, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan
| | - Araya Umetsu
- Department of Ophthalmology, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan
| | - Masato Furuhashi
- Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan
| | - Hiroshi Ohguro
- Department of Ophthalmology, Sapporo Medical University School of Medicine, Sapporo Ika Daigaku, Hirosaki, Japan.
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23
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Fu Y, Jiang F, Zhang X, Pan Y, Xu R, Liang X, Wu X, Li X, Lin K, Shi R, Zhang X, Ferrandon D, Liu J, Pei D, Wang J, Wang T. Perturbation of METTL1-mediated tRNA N 7- methylguanosine modification induces senescence and aging. Nat Commun 2024; 15:5713. [PMID: 38977661 PMCID: PMC11231295 DOI: 10.1038/s41467-024-49796-8] [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: 11/07/2023] [Accepted: 06/14/2024] [Indexed: 07/10/2024] Open
Abstract
Cellular senescence is characterized by a decrease in protein synthesis, although the underlying processes are mostly unclear. Chemical modifications to transfer RNAs (tRNAs) frequently influence tRNA activity, which is crucial for translation. We describe how tRNA N7-methylguanosine (m7G46) methylation, catalyzed by METTL1-WDR4, regulates translation and influences senescence phenotypes. Mettl1/Wdr4 and m7G gradually diminish with senescence and aging. A decrease in METTL1 causes a reduction in tRNAs, especially those with the m7G modification, via the rapid tRNA degradation (RTD) pathway. The decreases cause ribosomes to stall at certain codons, impeding the translation of mRNA that is essential in pathways such as Wnt signaling and ribosome biogenesis. Furthermore, chronic ribosome stalling stimulates the ribotoxic and integrative stress responses, which induce senescence-associated secretory phenotype. Moreover, restoring eEF1A protein mitigates senescence phenotypes caused by METTL1 deficiency by reducing RTD. Our findings demonstrate that tRNA m7G modification is essential for preventing premature senescence and aging by enabling efficient mRNA translation.
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Affiliation(s)
- Yudong Fu
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Fan Jiang
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
| | - Xiao Zhang
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yingyi Pan
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
| | - Rui Xu
- Department of pediatrics, Foshan maternal and children's hospital affiliated to southern medical university, 528000, Foshan, Guangdong, China
| | - Xiu Liang
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
| | - Xiaofen Wu
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
| | | | - Kaixuan Lin
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
| | - Ruona Shi
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
| | - Xiaofei Zhang
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Dominique Ferrandon
- Sino-French Hoffmann Institute, Guangzhou Medical University, Guangzhou, China
- Université de Strasbourg, Strasbourg, France
- Modèles Insectes de l'Immunité Innée, UPR 9022 du CNRS, Strasbourg, France
| | - Jing Liu
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China
- Joint School of Lifesciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China, Guangzhou Medical University, 511436, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Duanqing Pei
- School of Life Sciences, Westlake University, Hangzhou, China
| | - Jie Wang
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China.
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China.
- Joint School of Lifesciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China, Guangzhou Medical University, 511436, Guangzhou, China.
- University of Chinese Academy of Sciences, Beijing, China.
| | - Tao Wang
- Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangdong-Hong Kong Joint Laboratory for Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China.
- GIBH-HKU Guangdong-Hong Kong Stem Cell and Regenerative Medicine Research Centre, Guangzhou, China.
- GIBH-CUHK Joint Research Laboratory on Stem Cell and Regenerative Medicine, Guangzhou, China.
- University of Chinese Academy of Sciences, Beijing, China.
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Xie L, Cheng Y, Hu B, Chen X, An Y, Xia Z, Cai G, Li C, Peng H. PCLAF induces bone marrow adipocyte senescence and contributes to skeletal aging. Bone Res 2024; 12:38. [PMID: 38961077 PMCID: PMC11222446 DOI: 10.1038/s41413-024-00337-5] [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: 10/14/2023] [Revised: 03/30/2024] [Accepted: 04/11/2024] [Indexed: 07/05/2024] Open
Abstract
Bone marrow adipocytes (BMAds) affect bone homeostasis, but the mechanism remains unclear. Here, we showed that exercise inhibited PCNA clamp-associated factor (PCLAF) secretion from the bone marrow macrophages to inhibit BMAds senescence and thus alleviated skeletal aging. The genetic deletion of PCLAF in macrophages inhibited BMAds senescence and delayed skeletal aging. In contrast, the transplantation of PCLAF-mediated senescent BMAds into the bone marrow of healthy mice suppressed bone turnover. Mechanistically, PCLAF bound to the ADGRL2 receptor to inhibit AKT/mTOR signaling that triggered BMAds senescence and subsequently spread senescence among osteogenic and osteoclastic cells. Of note, we developed a PCLAF-neutralizing antibody and showed its therapeutic effects on skeletal health in old mice. Together, these findings identify PCLAF as an inducer of BMAds senescence and provide a promising way to treat age-related osteoporosis.
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Affiliation(s)
- Lingqi Xie
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yalun Cheng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Biao Hu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Xin Chen
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yuze An
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Zhuying Xia
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Guangping Cai
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Changjun Li
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, Hunan, 410008, China
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, Hunan, 410008, China
| | - Hui Peng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China.
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25
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Neto S, Reis A, Pinheiro M, Ferreira M, Neves V, Castanho TC, Santos N, Rodrigues AJ, Sousa N, Santos MAS, Moura GR. Unveiling the molecular landscape of cognitive aging: insights from polygenic risk scores, DNA methylation, and gene expression. Hum Genomics 2024; 18:75. [PMID: 38956648 PMCID: PMC11221141 DOI: 10.1186/s40246-024-00640-6] [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: 04/23/2024] [Accepted: 06/17/2024] [Indexed: 07/04/2024] Open
Abstract
BACKGROUND Aging represents a significant risk factor for the occurrence of cerebral small vessel disease, associated with white matter (WM) lesions, and to age-related cognitive alterations, though the precise mechanisms remain largely unknown. This study aimed to investigate the impact of polygenic risk scores (PRS) for WM integrity, together with age-related DNA methylation, and gene expression alterations, on cognitive aging in a cross-sectional healthy aging cohort. The PRSs were calculated using genome-wide association study (GWAS) summary statistics for magnetic resonance imaging (MRI) markers of WM integrity, including WM hyperintensities, fractional anisotropy (FA), and mean diffusivity (MD). These scores were utilized to predict age-related cognitive changes and evaluate their correlation with structural brain changes, which distinguish individuals with higher and lower cognitive scores. To reduce the dimensionality of the data and identify age-related DNA methylation and transcriptomic alterations, Sparse Partial Least Squares-Discriminant Analysis (sPLS-DA) was used. Subsequently, a canonical correlation algorithm was used to integrate the three types of omics data (PRS, DNA methylation, and gene expression data) and identify an individual "omics" signature that distinguishes subjects with varying cognitive profiles. RESULTS We found a positive association between MD-PRS and long-term memory, as well as a correlation between MD-PRS and structural brain changes, effectively discriminating between individuals with lower and higher memory scores. Furthermore, we observed an enrichment of polygenic signals in genes related to both vascular and non-vascular factors. Age-related alterations in DNA methylation and gene expression indicated dysregulation of critical molecular features and signaling pathways involved in aging and lifespan regulation. The integration of multi-omics data underscored the involvement of synaptic dysfunction, axonal degeneration, microtubule organization, and glycosylation in the process of cognitive aging. CONCLUSIONS These findings provide valuable insights into the biological mechanisms underlying the association between WM coherence and cognitive aging. Additionally, they highlight how age-associated DNA methylation and gene expression changes contribute to cognitive aging.
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Affiliation(s)
- Sonya Neto
- Institute for Biomedicine (iBiMED) and Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Andreia Reis
- Institute for Biomedicine (iBiMED) and Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Miguel Pinheiro
- Institute for Biomedicine (iBiMED) and Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Margarida Ferreira
- Institute for Biomedicine (iBiMED) and Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Vasco Neves
- Institute for Biomedicine (iBiMED) and Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Teresa Costa Castanho
- ICVS - School of Medicine, Campus Gualtar, University of Minho, 4710-057, Braga, Portugal
- Clinical Academic Center - Braga (2CA-B), Braga, Portugal
| | - Nadine Santos
- ICVS - School of Medicine, Campus Gualtar, University of Minho, 4710-057, Braga, Portugal
- Clinical Academic Center - Braga (2CA-B), Braga, Portugal
| | - Ana João Rodrigues
- ICVS - School of Medicine, Campus Gualtar, University of Minho, 4710-057, Braga, Portugal
- Clinical Academic Center - Braga (2CA-B), Braga, Portugal
| | - Nuno Sousa
- ICVS - School of Medicine, Campus Gualtar, University of Minho, 4710-057, Braga, Portugal
- Clinical Academic Center - Braga (2CA-B), Braga, Portugal
- P5 Medical Center, Braga, Portugal
| | - Manuel A S Santos
- Institute for Biomedicine (iBiMED) and Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal
- Multidisciplinary Institute of Aging, MIA-Portugal, Faculty of Medicine, University of Coimbra, Rua Largo 2, 3º, 3000-370, Coimbra, Portugal
| | - Gabriela R Moura
- Institute for Biomedicine (iBiMED) and Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal.
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26
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Qin Q, Liu R, Li Z, Liu M, Wu X, Wang H, Yang S, Sun X, Yi X. Resolving candidate genes of duck ovarian tissue transplantation via RNA-Seq and expression network analyses. Poult Sci 2024; 103:103788. [PMID: 38692177 PMCID: PMC11070914 DOI: 10.1016/j.psj.2024.103788] [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: 02/22/2024] [Revised: 04/15/2024] [Accepted: 04/17/2024] [Indexed: 05/03/2024] Open
Abstract
This study aims to identify candidate genes related to ovarian development after ovarian tissue transplantation through transcriptome sequencing (RNA-seq) and expression network analyses, as well as to provide a reference for determining the molecular mechanism of improving ovarian development following ovarian tissue transplantation. We collected ovarian tissues from 15 thirty-day-old ducks and split each ovary into 4 equal portions of comparable sizes before orthotopically transplanting them into 2-day-old ducks. Samples were collected on days 0 (untransplanted), 3, 6, and 9. The samples were paraffin sectioned and then subjected to Hematoxylin-Eosin (HE) staining and follicular counting. We extracted RNA from ovarian samples via the Trizol method to construct a transcriptome library, which was then sequenced by the Illumina Novaseq 6000 sequencing platform. The sequencing results were examined for differentially expressed genes (DEG) through gene ontology (GO) function and the Kyoto encyclopedia of genes and genomes (KEGG) pathway analyses, gene set enrichment analysis (GSEA), weighted correlation network analysis (WGCNA), and protein-protein interaction (PPI) networks. Some of the candidate genes were selected for verification using real-time fluorescence quantitative PCR (qRT-PCR). Histological analysis revealed a significant reduction in the number of morphologically normal follicles at 3, 6, and 9 d after ovarian transplantation, along with significantly higher abnormality rates (P < 0.05). The transcriptome analysis results revealed 2,114, 2,224, and 2,257 upregulated DEGs and 2,647, 2,883, and 2,665 downregulated DEGs at 3, 6, and 9 d after ovarian transplantation, respectively. Enrichment analysis revealed the involvement multiple pathways in inflammatory signaling, signal transduction, and cellular processes. Furthermore, WGCNA yielded 13 modules, with 10, 4, and 6 candidate genes mined at 3, 6 and 9 d after ovarian transplantation, respectively. Transcription factor (TF) prediction showed that STAT1 was the most important TF. Finally, the qRT-PCR verification results revealed that 12 candidate genes exhibited an expression trend consistent with sequencing data. In summary, significant differences were observed in the number of follicles in duck ovaries following ovarian transplantation. Candidate genes involved in ovarian vascular remodeling and proliferation were screened using RNA-Seq and WGCNA.
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Affiliation(s)
- Qingming Qin
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Rongxu Liu
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Zhili Li
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Midi Liu
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Xian Wu
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Huimin Wang
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Shuailiang Yang
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Xuyang Sun
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China
| | - Xianguo Yi
- College of Animal Science and Technology, Xinyang Agriculture and Forestry University, Xinyang, Henan Province, 464000, P. R. China.
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Burdusel D, Coman C, Ancuta D, Hermann DM, Doeppner TR, Gresita A, Popa‐Wagner A. Translatability of life-extending pharmacological treatments between different species. Aging Cell 2024; 23:e14208. [PMID: 38797976 PMCID: PMC11258477 DOI: 10.1111/acel.14208] [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: 01/11/2024] [Revised: 04/02/2024] [Accepted: 05/07/2024] [Indexed: 05/29/2024] Open
Abstract
Anti-aging research has made significant strides in identifying treatments capable of extending lifespan across a range of organisms, from simple invertebrates to mammals. This review showcases the current state of anti-aging interventions, highlighting the lifespan extensions observed in animal models through various treatments and the challenges encountered in translating these findings to humans. Despite promising results in lower organisms, the translation of anti-aging treatments to human applications presents a considerable challenge. This discrepancy can be attributed to the increasing complexity of biological systems, species-specific metabolic and genetic differences, and the redundancy of metabolic pathways linked to longevity. Our review focuses on analyzing these challenges, offering insights into the efficacy of anti-aging mechanisms across species and identifying key barriers to their translation into human treatments. By synthesizing current knowledge and identifying gaps in translatability, this review aims to underscore the importance of advancing these therapies for human benefit. Bridging this gap is essential to assess the potential of such treatments in extending the human healthspan.
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Affiliation(s)
- Daiana Burdusel
- Doctoral SchoolUniversity of Medicine and Pharmacy of CraiovaCraiovaRomania
- Chair of Vascular Neurology and Dementia, Department of NeurologyUniversity Hospital EssenEssenGermany
| | - Cristin Coman
- Cantacuzino National Medical Military Institute for Research and DevelopmentBucharestRomania
| | - Diana–Larisa Ancuta
- Cantacuzino National Medical Military Institute for Research and DevelopmentBucharestRomania
| | - Dirk M. Hermann
- Chair of Vascular Neurology and Dementia, Department of NeurologyUniversity Hospital EssenEssenGermany
| | - Thorsten R. Doeppner
- Department of NeurologyUniversity Medical Center GöttingenGöttingenGermany
- Department of NeurologyUniversity of Giessen Medical SchoolGiessenGermany
| | - Andrei Gresita
- Department of Biomedical SciencesNew York Institute of Technology, College of Osteopathic MedicineOld WestburyNew YorkUSA
| | - Aurel Popa‐Wagner
- Doctoral SchoolUniversity of Medicine and Pharmacy of CraiovaCraiovaRomania
- Chair of Vascular Neurology and Dementia, Department of NeurologyUniversity Hospital EssenEssenGermany
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Brogi S, Tabanelli R, Puca S, Calderone V. Intermittent Fasting: Myths, Fakes and Truth on This Dietary Regimen Approach. Foods 2024; 13:1960. [PMID: 38998465 PMCID: PMC11241639 DOI: 10.3390/foods13131960] [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: 05/25/2024] [Revised: 06/17/2024] [Accepted: 06/20/2024] [Indexed: 07/14/2024] Open
Abstract
Intermittent fasting (IF) has been indicated as a valuable alternative to the classical caloric restriction dietary regimen for lowering body weight and preventing obesity-related complications, such as metabolic syndrome and type II diabetes. However, is it effective? In this review article, we analyzed over 50 clinical studies in which IF, conducted by alternate day fasting (ADF) or time-restricted feeding (TRF), was compared with the caloric restriction approach. We evaluated the different roles of IF in treating and preventing human disorders such as metabolic syndrome, type II diabetes, and some types of cancer, as well as the usefulness of IF in reducing body weight and cardiovascular risk factors such as hypertension. Furthermore, we explored the cellular pathways targeted by IF to exert their beneficial effects by activating effector proteins that modulate cell functions and resistance to oxidative stress. In contrast, we investigated concerns regarding human health related to the adoption of IF dietary regimens, highlighting the profound debate surrounding weight loss regimens. We examined and compared several clinical trials to formulate an updated concept regarding IF and its therapeutic potential.
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Affiliation(s)
- Simone Brogi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (R.T.); (S.P.); (V.C.)
- Bioinformatics Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Rita Tabanelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (R.T.); (S.P.); (V.C.)
| | - Sara Puca
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (R.T.); (S.P.); (V.C.)
| | - Vincenzo Calderone
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (R.T.); (S.P.); (V.C.)
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29
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Yusri K, Kumar S, Fong S, Gruber J, Sorrentino V. Towards Healthy Longevity: Comprehensive Insights from Molecular Targets and Biomarkers to Biological Clocks. Int J Mol Sci 2024; 25:6793. [PMID: 38928497 PMCID: PMC11203944 DOI: 10.3390/ijms25126793] [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: 05/23/2024] [Revised: 06/16/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024] Open
Abstract
Aging is a complex and time-dependent decline in physiological function that affects most organisms, leading to increased risk of age-related diseases. Investigating the molecular underpinnings of aging is crucial to identify geroprotectors, precisely quantify biological age, and propose healthy longevity approaches. This review explores pathways that are currently being investigated as intervention targets and aging biomarkers spanning molecular, cellular, and systemic dimensions. Interventions that target these hallmarks may ameliorate the aging process, with some progressing to clinical trials. Biomarkers of these hallmarks are used to estimate biological aging and risk of aging-associated disease. Utilizing aging biomarkers, biological aging clocks can be constructed that predict a state of abnormal aging, age-related diseases, and increased mortality. Biological age estimation can therefore provide the basis for a fine-grained risk stratification by predicting all-cause mortality well ahead of the onset of specific diseases, thus offering a window for intervention. Yet, despite technological advancements, challenges persist due to individual variability and the dynamic nature of these biomarkers. Addressing this requires longitudinal studies for robust biomarker identification. Overall, utilizing the hallmarks of aging to discover new drug targets and develop new biomarkers opens new frontiers in medicine. Prospects involve multi-omics integration, machine learning, and personalized approaches for targeted interventions, promising a healthier aging population.
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Affiliation(s)
- Khalishah Yusri
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Sanjay Kumar
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
| | - Sheng Fong
- Department of Geriatric Medicine, Singapore General Hospital, Singapore 169608, Singapore
- Clinical and Translational Sciences PhD Program, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Jan Gruber
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Science Division, Yale-NUS College, Singapore 138527, Singapore
| | - Vincenzo Sorrentino
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Department of Medical Biochemistry, Amsterdam UMC, Amsterdam Gastroenterology Endocrinology Metabolism and Amsterdam Neuroscience Cellular & Molecular Mechanisms, University of Amsterdam, Meibergdreef 9, 1105AZ Amsterdam, The Netherlands
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30
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Chmielewski PP, Data K, Strzelec B, Farzaneh M, Anbiyaiee A, Zaheer U, Uddin S, Sheykhi-Sabzehpoush M, Mozdziak P, Zabel M, Dzięgiel P, Kempisty B. Human Aging and Age-Related Diseases: From Underlying Mechanisms to Pro-Longevity Interventions. Aging Dis 2024:AD.2024.0280. [PMID: 38913049 DOI: 10.14336/ad.2024.0280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 06/02/2024] [Indexed: 06/25/2024] Open
Abstract
As human life expectancy continues to rise, becoming a pressing global concern, it brings into focus the underlying mechanisms of aging. The increasing lifespan has led to a growing elderly population grappling with age-related diseases (ARDs), which strains healthcare systems and economies worldwide. While human senescence was once regarded as an immutable and inexorable phenomenon, impervious to interventions, the emerging field of geroscience now offers innovative approaches to aging, holding the promise of extending the period of healthspan in humans. Understanding the intricate links between aging and pathologies is essential in addressing the challenges presented by aging populations. A substantial body of evidence indicates shared mechanisms and pathways contributing to the development and progression of various ARDs. Consequently, novel interventions targeting the intrinsic mechanisms of aging have the potential to delay the onset of diverse pathological conditions, thereby extending healthspan. In this narrative review, we discuss the most promising methods and interventions aimed at modulating aging, which harbor the potential to mitigate ARDs in the future. We also outline the complexity of senescence and review recent empirical evidence to identify rational strategies for promoting healthy aging.
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Affiliation(s)
- Piotr Pawel Chmielewski
- Division of Anatomy, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Krzysztof Data
- Division of Anatomy, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Bartłomiej Strzelec
- 2nd Department of General Surgery and Surgical Oncology, Medical University Hospital, Wroclaw, Poland
| | - Maryam Farzaneh
- Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Amir Anbiyaiee
- Department of Surgery, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Uzma Zaheer
- School of Biosciences, Faculty of Health Sciences and Medicine, The University of Surrey, United Kingdom
| | - Shahab Uddin
- Translational Institute and Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
- Department of Biosciences, Integral University, Lucknow, Uttar Pradesh, India
| | | | - Paul Mozdziak
- Graduate Physiology Program, North Carolina State University, Raleigh, NC 27695, USA
| | - Maciej Zabel
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wroclaw, Poland
- Division of Anatomy and Histology, The University of Zielona Góra, Poland
| | - Piotr Dzięgiel
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - Bartosz Kempisty
- Division of Anatomy, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
- Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun, Poland
- Physiology Graduate Faculty, North Carolina State University, Raleigh, NC 27695, USA
- Center of Assisted Reproduction, Department of Obstetrics and Gynecology, University Hospital and Masaryk University, Brno, Czech Republic
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31
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Marafie SK, Al-Mulla F, Abubaker J. mTOR: Its Critical Role in Metabolic Diseases, Cancer, and the Aging Process. Int J Mol Sci 2024; 25:6141. [PMID: 38892329 PMCID: PMC11173325 DOI: 10.3390/ijms25116141] [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: 05/03/2024] [Revised: 05/26/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
The mammalian target of rapamycin (mTOR) is a pivotal regulator, integrating diverse environmental signals to control fundamental cellular functions, such as protein synthesis, cell growth, survival, and apoptosis. Embedded in a complex network of signaling pathways, mTOR dysregulation is implicated in the onset and progression of a range of human diseases, including metabolic disorders such as diabetes and cardiovascular diseases, as well as various cancers. mTOR also has a notable role in aging. Given its extensive biological impact, mTOR signaling is a prime therapeutic target for addressing these complex conditions. The development of mTOR inhibitors has proven advantageous in numerous research domains. This review delves into the significance of mTOR signaling, highlighting the critical components of this intricate network that contribute to disease. Additionally, it addresses the latest findings on mTOR inhibitors and their clinical implications. The review also emphasizes the importance of developing more effective next-generation mTOR inhibitors with dual functions to efficiently target the mTOR pathways. A comprehensive understanding of mTOR signaling will enable the development of effective therapeutic strategies for managing diseases associated with mTOR dysregulation.
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Affiliation(s)
- Sulaiman K. Marafie
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, P.O. Box 1180, Dasman 15462, Kuwait
| | - Fahd Al-Mulla
- Department of Translational Research, Dasman Diabetes Institute, P.O. Box 1180, Dasman 15462, Kuwait;
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, P.O. Box 1180, Dasman 15462, Kuwait
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Salminen A. The role of the immunosuppressive PD-1/PD-L1 checkpoint pathway in the aging process and age-related diseases. J Mol Med (Berl) 2024; 102:733-750. [PMID: 38600305 PMCID: PMC11106179 DOI: 10.1007/s00109-024-02444-6] [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: 02/15/2024] [Revised: 03/18/2024] [Accepted: 04/01/2024] [Indexed: 04/12/2024]
Abstract
The accumulation of senescent cells within tissues is a hallmark of the aging process. Senescent cells are also commonly present in many age-related diseases and in the cancer microenvironment. The escape of abnormal cells from immune surveillance indicates that there is some defect in the function of cytotoxic immune cells, e.g., CD8+ T cells and natural killer (NK) cells. Recent studies have revealed that the expression of programmed death-ligand 1 (PD-L1) protein is abundantly increased in senescent cells. An increase in the amount of PD-L1 protein protects senescent cells from clearance by the PD-1 checkpoint receptor in cytotoxic immune cells. In fact, the activation of the PD-1 receptor suppresses the cytotoxic properties of CD8+ T and NK cells, promoting a state of immunosenescence. The inhibitory PD-1/PD-L1 checkpoint pathway acts in cooperation with immunosuppressive cells; for example, activation of PD-1 receptor can enhance the differentiation of regulatory T cells (Treg), myeloid-derived suppressor cells (MDSC), and M2 macrophages, whereas the cytokines secreted by immunosuppressive cells stimulate the expression of the immunosuppressive PD-L1 protein. Interestingly, many signaling pathways known to promote cellular senescence and the aging process are crucial stimulators of the expression of PD-L1 protein, e.g., epigenetic regulation, inflammatory mediators, mTOR-related signaling, cGAS-STING pathway, and AhR signaling. It seems that the inhibitory PD-1/PD-L1 immune checkpoint axis has a crucial role in the accumulation of senescent cells and thus it promotes the aging process in tissues. Thus, the blockade of the PD-1/PD-L1 checkpoint signaling might be a potential anti-aging senolytic therapy. KEY MESSAGES: Senescent cells accumulate within tissues during aging and age-related diseases. Senescent cells are able to escape immune surveillance by cytotoxic immune cells. Expression of programmed death-ligand 1 (PD-L1) markedly increases in senescent cells. Age-related signaling stimulates the expression of PD-L1 protein in senescent cells. Inhibitory PD-1/PD-L1 checkpoint pathway suppresses clearance of senescent cells.
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Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland.
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Pio-Lopez L, Levin M. Aging as a loss of morphostatic information: A developmental bioelectricity perspective. Ageing Res Rev 2024; 97:102310. [PMID: 38636560 DOI: 10.1016/j.arr.2024.102310] [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: 11/05/2023] [Revised: 02/21/2024] [Accepted: 04/12/2024] [Indexed: 04/20/2024]
Abstract
Maintaining order at the tissue level is crucial throughout the lifespan, as failure can lead to cancer and an accumulation of molecular and cellular disorders. Perhaps, the most consistent and pervasive result of these failures is aging, which is characterized by the progressive loss of function and decline in the ability to maintain anatomical homeostasis and reproduce. This leads to organ malfunction, diseases, and ultimately death. The traditional understanding of aging is that it is caused by the accumulation of molecular and cellular damage. In this article, we propose a complementary view of aging from the perspective of endogenous bioelectricity which has not yet been integrated into aging research. We propose a view of aging as a morphostasis defect, a loss of biophysical prepattern information, encoding anatomical setpoints used for dynamic tissue and organ homeostasis. We hypothesize that this is specifically driven by abrogation of the endogenous bioelectric signaling that normally harnesses individual cell behaviors toward the creation and upkeep of complex multicellular structures in vivo. Herein, we first describe bioelectricity as the physiological software of life, and then identify and discuss the links between bioelectricity and life extension strategies and age-related diseases. We develop a bridge between aging and regeneration via bioelectric signaling that suggests a research program for healthful longevity via morphoceuticals. Finally, we discuss the broader implications of the homologies between development, aging, cancer and regeneration and how morphoceuticals can be developed for aging.
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Affiliation(s)
- Léo Pio-Lopez
- Allen Discovery Center, Tufts University, Medford, MA 02155, USA
| | - Michael Levin
- Allen Discovery Center, Tufts University, Medford, MA 02155, USA; Wyss Institute for Biologically Inspired Engineering, Boston, MA 02115, USA.
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Leung GHD, Wong CW, Pun FW, Aliper A, Ren F, Zhavoronkov A. Leveraging AI to identify dual-purpose aging and disease targets. Expert Opin Ther Targets 2024; 28:473-476. [PMID: 38038952 DOI: 10.1080/14728222.2023.2288270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/22/2023] [Indexed: 12/02/2023]
Affiliation(s)
- Geoffrey Ho Duen Leung
- Insilico Medicine Hong Kong Ltd, Hong Kong Science and Technology Park, Hong Kong, China
| | - Chun Wai Wong
- Insilico Medicine Hong Kong Ltd, Hong Kong Science and Technology Park, Hong Kong, China
| | - Frank W Pun
- Insilico Medicine Hong Kong Ltd, Hong Kong Science and Technology Park, Hong Kong, China
| | - Alex Aliper
- Insilico Medicine AI Ltd, Abu Dhabi, United Arab Emirates
| | - Feng Ren
- Insilico Medicine Shanghai Ltd, Shanghai, China
| | - Alex Zhavoronkov
- Insilico Medicine Hong Kong Ltd, Hong Kong Science and Technology Park, Hong Kong, China
- Insilico Medicine AI Ltd, Abu Dhabi, United Arab Emirates
- Buck Institute for Research on Aging, Novato, CA, USA
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Baur J, Koppik M, Savković U, Đorđević M, Stojkovic B, Berger D. Coevolution of longevity and female germline maintenance. Proc Biol Sci 2024; 291:20240532. [PMID: 38864321 PMCID: PMC11338575 DOI: 10.1098/rspb.2024.0532] [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: 11/24/2023] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 06/13/2024] Open
Abstract
An often-overlooked aspect of life-history optimization is the allocation of resources to protect the germline and secure safe transmission of genetic information. While failure to do so renders significant fitness consequences in future generations, germline maintenance comes with substantial costs. Thus, germline allocation should trade off with other life-history decisions and be optimized in accordance with an organism's reproductive schedule. Here, we tested this hypothesis by studying germline maintenance in lines of seed beetle, selected for early (E) or late (L) reproduction for 350 and 240 generations, respectively. Female animals provide maintenance and screening of male gametes in their reproductive tract and oocytes. Here, we reveal the ability of young and aged E- and L-females to provide this form of germline maintenance by mating them to males with ejaculates with artificially elevated levels of protein and DNA damage. We find that germline maintenance in E-females peaks at young age and then declines, while the opposite is true for L-females, in accordance with the age of reproduction in the respective regime. These findings identify the central role of allocation to secure germline integrity in life-history evolution and highlight how females can play a crucial role in mitigating the effects of male germline decisions on mutation rate and offspring quality.
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Affiliation(s)
- Julian Baur
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
| | - Mareike Koppik
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
- Animal Ecology, Department of Zoology, Martin-Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Uroš Savković
- Department of Evolutionary Biology, Institute for Biological Research “Siniša Stanković”, National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade11000, Serbia
| | - Mirko Đorđević
- Department of Evolutionary Biology, Institute for Biological Research “Siniša Stanković”, National Institute of the Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, Belgrade11000, Serbia
| | - Biljana Stojkovic
- Institute of Zoology, Chair of Genetics and Evolution, Faculty of Biology, Studentski trg 16, 11000 Belgrade, Serbia
| | - David Berger
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
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Meur S, Mukherjee S, Roy S, Karati D. Role of PIM Kinase Inhibitor in the Treatment of Alzheimer's Disease. Mol Neurobiol 2024:10.1007/s12035-024-04257-7. [PMID: 38816674 DOI: 10.1007/s12035-024-04257-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/21/2024] [Indexed: 06/01/2024]
Abstract
Alzheimer's disease (AD), a neurodegenerative disorder, is the most prevalent form of senile dementia, causing progressive deterioration of cognition, behavior, and rational skills. Neuropathologically, AD is characterized by two hallmark proteinaceous aggregates: amyloid beta (Aβ) plaques and neurofibrillary tangles (NFTs) formed of hyperphosphorylated tau. A significant study has been done to understand how Aβ and/or tau accumulation can alter signaling pathways that affect neuronal function. A conserved protein kinase known as the mammalian target of rapamycin (mTOR) is essential for maintaining the proper balance between protein synthesis and degradation. Overwhelming evidence shows mTOR signaling's primary role in age-dependent cognitive decline and the pathogenesis of AD. Postmortem human AD brains consistently show an upregulation of mTOR signaling. Confocal microscopy findings demonstrated a direct connection between mTOR and intraneuronal Aβ42 through molecular processes of PRAS40 phosphorylation. By attaching to the mTORC1 complex, PRAS40 inhibits the activity of mTOR. Furthermore, inhibiting PRAS40 phosphorylation can stop the Aβ-mediated increase in mTOR activity, indicating that the accumulation of Aβ may aid in PRAS40 phosphorylation. Physiologically, PRAS40 is phosphorylated by PIM1 which is a serine/threonine kinase of proto-oncogene PIM kinase family. Pharmacological inhibition of PIM1 activity prevents the Aβ-induced mTOR hyperactivity in vivo by blocking PRAS40 phosphorylation and restores cognitive impairments by enhancing proteasome function. Recently identified small-molecule PIM1 inhibitors have been developed as potential therapeutic to reduce AD-neuropathology. This comprehensive study aims to address the activity of PIM1 inhibitor that has been tested for the treatment of AD, in addition to the pharmacological and structural aspects of PIM1.
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Affiliation(s)
- Shreyasi Meur
- Department of Pharmaceutical Technology, School of Pharmacy, Techno India University, Kolkata, 700091, West Bengal, India
| | - Swarupananda Mukherjee
- Department of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata-Group of Institutions, 124, B.L Saha Road, Kolkata, 700053, West Bengal, India
| | - Souvik Roy
- Department of Pharmaceutical Technology, NSHM Knowledge Campus, Kolkata-Group of Institutions, 124, B.L Saha Road, Kolkata, 700053, West Bengal, India
| | - Dipanjan Karati
- Department of Pharmaceutical Technology, School of Pharmacy, Techno India University, Kolkata, 700091, West Bengal, India.
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He B, Shao B, Cheng C, Ye Z, Yang Y, Fan B, Xia H, Wu H, Liu Q, Zhang J. miR-21-Mediated Endothelial Senescence and Dysfunction Are Involved in Cigarette Smoke-Induced Pulmonary Hypertension through Activation of PI3K/AKT/mTOR Signaling. TOXICS 2024; 12:396. [PMID: 38922076 PMCID: PMC11209295 DOI: 10.3390/toxics12060396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/25/2024] [Accepted: 05/27/2024] [Indexed: 06/27/2024]
Abstract
Smoking is a pathogenic factor for pulmonary hypertension (PH). Our previous study showed that serum miR-21 levels are elevated in smokers. miR-21 is considered as engaged in the PH process; however, its mechanisms remain unclear. In this investigation, we found that in the lung tissue of smoking-induced PH patients, the levels of miR-21 and aging markers (p21 and p16) were upregulated, and the function of pulmonary vascular endothelial cells was also impaired. Exposure of mice to cigarette smoke (CS) for four months caused similar changes in lung tissues and increased pulmonary arterial pressure, which were attenuated by knockout of miR-21. Further, human umbilical vein endothelial cells (HUVECs) exposed to cigarette smoke extract (CSE) revealed upregulation of miR-21 levels, depression of PTEN, activation of PI3K/AKT/mTOR signaling, an increase in senescence indexes, and enhanced dysfunction. Inhibiting miR-21 overexpression reversed the PTEN-mTOR signaling pathway and prevented senescence and dysfunction of HUVECs. In sum, our data indicate that miR-21-mediated endothelial senescence and dysfunction are involved in CS-induced PH through the activation of PI3K/AKT/mTOR signaling, which suggests that selective miR-21 inhibition offers the potential to attenuate PH.
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Affiliation(s)
- Bin He
- Department of Emergency, Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China; (B.H.); (H.W.)
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
| | - Binxia Shao
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
- Department of Emergency, Nanjing Drum Tower Hospital, The Affiliated Hospital of Medical School of Nanjing University, Nanjing 210008, China
| | - Cheng Cheng
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
| | - Zitong Ye
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
| | - Yi Yang
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
| | - Bowen Fan
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
| | - Haibo Xia
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
| | - Hao Wu
- Department of Emergency, Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China; (B.H.); (H.W.)
| | - Qizhan Liu
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (B.S.); (C.C.); (Z.Y.); (Y.Y.); (B.F.); (H.X.)
| | - Jinsong Zhang
- Department of Emergency, Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China; (B.H.); (H.W.)
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Alfatah M, Lim JJJ, Zhang Y, Naaz A, Cheng TYN, Yogasundaram S, Faidzinn NA, Lin JJ, Eisenhaber B, Eisenhaber F. Uncharacterized yeast gene YBR238C, an effector of TORC1 signaling in a mitochondrial feedback loop, accelerates cellular aging via HAP4- and RMD9-dependent mechanisms. eLife 2024; 12:RP92178. [PMID: 38713053 PMCID: PMC11076046 DOI: 10.7554/elife.92178] [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] [Indexed: 05/08/2024] Open
Abstract
Uncovering the regulators of cellular aging will unravel the complexity of aging biology and identify potential therapeutic interventions to delay the onset and progress of chronic, aging-related diseases. In this work, we systematically compared genesets involved in regulating the lifespan of Saccharomyces cerevisiae (a powerful model organism to study the cellular aging of humans) and those with expression changes under rapamycin treatment. Among the functionally uncharacterized genes in the overlap set, YBR238C stood out as the only one downregulated by rapamycin and with an increased chronological and replicative lifespan upon deletion. We show that YBR238C and its paralog RMD9 oppositely affect mitochondria and aging. YBR238C deletion increases the cellular lifespan by enhancing mitochondrial function. Its overexpression accelerates cellular aging via mitochondrial dysfunction. We find that the phenotypic effect of YBR238C is largely explained by HAP4- and RMD9-dependent mechanisms. Furthermore, we find that genetic- or chemical-based induction of mitochondrial dysfunction increases TORC1 (Target of Rapamycin Complex 1) activity that, subsequently, accelerates cellular aging. Notably, TORC1 inhibition by rapamycin (or deletion of YBR238C) improves the shortened lifespan under these mitochondrial dysfunction conditions in yeast and human cells. The growth of mutant cells (a proxy of TORC1 activity) with enhanced mitochondrial function is sensitive to rapamycin whereas the growth of defective mitochondrial mutants is largely resistant to rapamycin compared to wild type. Our findings demonstrate a feedback loop between TORC1 and mitochondria (the TORC1-MItochondria-TORC1 (TOMITO) signaling process) that regulates cellular aging processes. Hereby, YBR238C is an effector of TORC1 modulating mitochondrial function.
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Affiliation(s)
- Mohammad Alfatah
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Jolyn Jia Jia Lim
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yizhong Zhang
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Arshia Naaz
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Trishia Yi Ning Cheng
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Sonia Yogasundaram
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Nashrul Afiq Faidzinn
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Jovian Jing Lin
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Birgit Eisenhaber
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- LASA – Lausitz Advanced Scientific Applications gGmbHWeißwasserGermany
| | - Frank Eisenhaber
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- Genome Institute of Singapore (GIS), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
- LASA – Lausitz Advanced Scientific Applications gGmbHWeißwasserGermany
- School of Biological Sciences (SBS), Nanyang Technological University (NTU)SingaporeSingapore
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Wang X, Tazearslan C, Kim S, Guo Q, Contreras D, Yang J, Hudgins AD, Suh Y. In vitro heterochronic parabiosis identifies pigment epithelium-derived factor as a systemic mediator of rejuvenation by young blood. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.02.592258. [PMID: 38746475 PMCID: PMC11092633 DOI: 10.1101/2024.05.02.592258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Several decades of heterochronic parabiosis (HCPB) studies have demonstrated the restorative impact of young blood, and deleterious influence of aged blood, on physiological function and homeostasis across tissues, although few of the factors responsible for these observations have been identified. Here we develop an in vitro HCPB system to identify these circulating factors, using replicative lifespan (RLS) of primary human fibroblasts as an endpoint of cellular health. We find that RLS is inversely correlated with serum donor age and sensitive to the presence or absence of specific serum components. Through in vitro HCPB, we identify the secreted protein pigment epithelium-derived factor (PEDF) as a circulating factor that extends RLS of primary human fibroblasts and declines with age in mammals. Systemic administration of PEDF to aged mice reverses age-related functional decline and pathology across several tissues, improving cognitive function and reducing hepatic fibrosis and renal lipid accumulation. Together, our data supports PEDF as a systemic mediator of the effect of young blood on organismal health and homeostasis and establishes our in vitro HCPB system as a valuable screening platform for the identification of candidate circulating factors involved in aging and rejuvenation.
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Affiliation(s)
- Xizhe Wang
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY
- These authors contributed equally
| | - Cagdas Tazearslan
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY
- These authors contributed equally
| | - Seungsoo Kim
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY
| | - Qinghua Guo
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY
| | - Daniela Contreras
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY
| | - Jiping Yang
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY
| | - Adam D. Hudgins
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY
| | - Yousin Suh
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY
- Department of Genetics and Development, Columbia University Medical Center, New York, NY
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40
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Mir DA, Ma Z, Horrocks J, Rogers AN. Stress-induced Eukaryotic Translational Regulatory Mechanisms. ARXIV 2024:arXiv:2405.01664v1. [PMID: 38745702 PMCID: PMC11092689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The eukaryotic protein synthesis process entails intricate stages governed by diverse mechanisms to tightly regulate translation. Translational regulation during stress is pivotal for maintaining cellular homeostasis, ensuring the accurate expression of essential proteins crucial for survival. This selective translational control mechanism is integral to cellular adaptation and resilience under adverse conditions. This review manuscript explores various mechanisms involved in selective translational regulation, focusing on mRNA-specific and global regulatory processes. Key aspects of translational control include translation initiation, which is often a rate-limiting step, and involves the formation of the eIF4F complex and recruitment of mRNA to ribosomes. Regulation of translation initiation factors, such as eIF4E, eIF4E2, and eIF2, through phosphorylation and interactions with binding proteins, modulates translation efficiency under stress conditions. This review also highlights the control of translation initiation through factors like the eIF4F complex and the ternary complex and also underscores the importance of eIF2α phosphorylation in stress granule formation and cellular stress responses. Additionally, the impact of amino acid deprivation, mTOR signaling, and ribosome biogenesis on translation regulation and cellular adaptation to stress is also discussed. Understanding the intricate mechanisms of translational regulation during stress provides insights into cellular adaptation mechanisms and potential therapeutic targets for various diseases, offering valuable avenues for addressing conditions associated with dysregulated protein synthesis.
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Affiliation(s)
- Dilawar Ahmad Mir
- Kathryn W. Davis Center for Regenerative Biology and Aging, Mount Desert Island Biological Laboratory, Bar Harbor, ME
| | - Zhengxin Ma
- Kathryn W. Davis Center for Regenerative Biology and Aging, Mount Desert Island Biological Laboratory, Bar Harbor, ME
| | - Jordan Horrocks
- Kathryn W. Davis Center for Regenerative Biology and Aging, Mount Desert Island Biological Laboratory, Bar Harbor, ME
| | - Aric N Rogers
- Kathryn W. Davis Center for Regenerative Biology and Aging, Mount Desert Island Biological Laboratory, Bar Harbor, ME
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Missong H, Joshi R, Khullar N, Thareja S, Navik U, Bhatti GK, Bhatti JS. Nutrient-epigenome interactions: Implications for personalized nutrition against aging-associated diseases. J Nutr Biochem 2024; 127:109592. [PMID: 38325612 DOI: 10.1016/j.jnutbio.2024.109592] [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: 10/15/2023] [Revised: 01/28/2024] [Accepted: 01/30/2024] [Indexed: 02/09/2024]
Abstract
Aging is a multifaceted process involving genetic and environmental interactions often resulting in epigenetic changes, potentially leading to aging-related diseases. Various strategies, like dietary interventions and calorie restrictions, have been employed to modify these epigenetic landscapes. A burgeoning field of interest focuses on the role of microbiota in human health, emphasizing system biology and computational approaches. These methods help decipher the intricate interplay between diet and gut microbiota, facilitating the creation of personalized nutrition strategies. In this review, we analysed the mechanisms related to nutritional interventions while highlighting the influence of dietary strategies, like calorie restriction and intermittent fasting, on microbial composition and function. We explore how gut microbiota affects the efficacy of interventions using tools like multi-omics data integration, network analysis, and machine learning. These tools enable us to pinpoint critical regulatory elements and generate individualized models for dietary responses. Lastly, we emphasize the need for a deeper comprehension of nutrient-epigenome interactions and the potential of personalized nutrition informed by individual genetic and epigenetic profiles. As knowledge and technology advance, dietary epigenetics stands on the cusp of reshaping our strategy against aging and related diseases.
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Affiliation(s)
- Hemi Missong
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Riya Joshi
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, Punjab, India
| | - Naina Khullar
- Department of Zoology, Mata Gujri College, Fatehgarh Sahib, Punjab, India
| | - Suresh Thareja
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, Punjab, India
| | - Umashanker Navik
- Department of Pharmacology, Central University of Punjab, Bathinda, Punjab, India
| | - Gurjit Kaur Bhatti
- Department of Medical Lab Technology, University Institute of Applied Health Sciences, Chandigarh University, Mohali, Punjab, India.
| | - Jasvinder Singh Bhatti
- Laboratory of Translational Medicine and Nanotherapeutics, Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, Punjab, India.
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Ehinger Y, Phamluong K, Ron D. Sex Differences In The Interaction Between Alcohol And mTORC1. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.10.04.560781. [PMID: 38712221 PMCID: PMC11071286 DOI: 10.1101/2023.10.04.560781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
The kinase mechanistic target of rapamycin complex 1 (mTORC1) plays an essential role in learning and memory by promoting mRNA to protein translation of a subset of synaptic proteins at dendrites. We generated a large body of data in male rodents indicating that mTORC1 is critically involved in mechanisms that promote numerous adverse behaviors associated with alcohol use disorder (AUD) including heavy alcohol use. For example, we found that mTORC1 is activated in the nucleus accumbens (NAc) and orbitofrontal cortex (OFC) of male mice and rats that were subjected to 7 weeks of intermittent access to 20% alcohol two-bottle choice (IA20%2BC). We further showed that systemic or intra-NAc administration of the selective mTORC1 inhibitor, rapamycin, decreases alcohol seeking and drinking, whereas intra-OFC administration of rapamycin reduces alcohol seeking and habit in male rats. This study aimed to assess mTORC1 activation in these corticostriatal regions of female mice and to determine whether the selective mTORC1 inhibitor, rapamycin, can be used to reduce heavy alcohol use in female mice. We found that mTORC1 is not activated by 7 weeks of intermittent 20% alcohol binge drinking and withdrawal in the NAc and OFC. Like in males, mTORC1 signaling was not activated by chronic alcohol intake and withdrawal in the medial prefrontal cortex (mPFC) of female mice. Interestingly, Pearson correlation comparisons revealed that the basal level of mTORC1 activation between the two prefrontal regions, OFC and mPFC were correlated and that the drinking profile predicts the level of mTORC1 activation in the mPFC after 4-hour binge drinking. Finally, we report that administration of rapamycin does not attenuate heavy alcohol drinking in female animals. Together, our results suggest a sex-dependent contribution of mTORC1 to the neuroadaptation that drives alcohol use and abuse.
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Mohammadzadeh M, Zarei M, Abbasi H, Webster TJ, Beheshtizadeh N. Promoting osteogenesis and bone regeneration employing icariin-loaded nanoplatforms. J Biol Eng 2024; 18:29. [PMID: 38649969 PMCID: PMC11036660 DOI: 10.1186/s13036-024-00425-4] [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: 10/17/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024] Open
Abstract
There is an increasing demand for innovative strategies that effectively promote osteogenesis and enhance bone regeneration. The critical process of bone regeneration involves the transformation of mesenchymal stromal cells into osteoblasts and the subsequent mineralization of the extracellular matrix, making up the complex mechanism of osteogenesis. Icariin's diverse pharmacological properties, such as anti-inflammatory, anti-oxidant, and osteogenic effects, have attracted considerable attention in biomedical research. Icariin, known for its ability to stimulate bone formation, has been found to encourage the transformation of mesenchymal stromal cells into osteoblasts and improve the subsequent process of mineralization. Several studies have demonstrated the osteogenic effects of icariin, which can be attributed to its hormone-like function. It has been found to induce the expression of BMP-2 and BMP-4 mRNAs in osteoblasts and significantly upregulate Osx at low doses. Additionally, icariin promotes bone formation by stimulating the expression of pre-osteoblastic genes like Osx, RUNX2, and collagen type I. However, icariin needs to be effectively delivered to bone to perform such promising functions.Encapsulating icariin within nanoplatforms holds significant promise for promoting osteogenesis and bone regeneration through a range of intricate biological effects. When encapsulated in nanofibers or nanoparticles, icariin exerts its effects directly at the cellular level. Recalling that inflammation is a critical factor influencing bone regeneration, icariin's anti-inflammatory effects can be harnessed and amplified when encapsulated in nanoplatforms. Also, while cell adhesion and cell migration are pivotal stages of tissue regeneration, icariin-loaded nanoplatforms contribute to these processes by providing a supportive matrix for cellular attachment and movement. This review comprehensively discusses icariin-loaded nanoplatforms used for bone regeneration and osteogenesis, further presenting where the field needs to go before icariin can be used clinically.
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Affiliation(s)
- Mahsa Mohammadzadeh
- Department of Materials Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
- Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Masoud Zarei
- Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
- Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Hossein Abbasi
- Department of Mechanical Engineering, University of Michigan-Dearborn, Dearborn, MI, 48128, USA
| | - Thomas J Webster
- School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, China
- School of Engineering, Saveetha University, Chennai, India
- Program in Materials Science, UFPI, Teresina, Brazil
| | - Nima Beheshtizadeh
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
- Regenerative Medicine Group (REMED), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
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Reda GK, Ndunguru SF, Csernus B, Gulyás G, Knop R, Szabó C, Czeglédi L, Lendvai ÁZ. Dietary restriction and life-history trade-offs: insights into mTOR pathway regulation and reproductive investment in Japanese quail. J Exp Biol 2024; 227:jeb247064. [PMID: 38563310 DOI: 10.1242/jeb.247064] [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: 11/26/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
Resources are needed for growth, reproduction and survival, and organisms must trade off limited resources among competing processes. Nutritional availability in organisms is sensed and monitored by nutrient-sensing pathways that can trigger physiological changes or alter gene expression. Previous studies have proposed that one such signalling pathway, the mechanistic target of rapamycin (mTOR), underpins a form of adaptive plasticity when individuals encounter constraints in their energy budget. Despite the fundamental importance of this process in evolutionary biology, how nutritional limitation is regulated through the expression of genes governing this pathway and its consequential effects on fitness remain understudied, particularly in birds. We used dietary restriction to simulate resource depletion and examined its effects on body mass, reproduction and gene expression in Japanese quails (Coturnix japonica). Quails were subjected to feeding at 20%, 30% and 40% restriction levels or ad libitum for 2 weeks. All restricted groups exhibited reduced body mass, whereas reductions in the number and mass of eggs were observed only under more severe restrictions. Additionally, dietary restriction led to decreased expression of mTOR and insulin-like growth factor 1 (IGF1), whereas the ribosomal protein S6 kinase 1 (RPS6K1) and autophagy-related genes (ATG9A and ATG5) were upregulated. The pattern in which mTOR responded to restriction was similar to that for body mass. Regardless of the treatment, proportionally higher reproductive investment was associated with individual variation in mTOR expression. These findings reveal the connection between dietary intake and the expression of mTOR and related genes in this pathway.
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Affiliation(s)
- Gebrehaweria K Reda
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
- Doctoral School of Animal Science, University of Debrecen, 4032 Debrecen, Hungary
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
| | - Sawadi F Ndunguru
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
- Doctoral School of Animal Science, University of Debrecen, 4032 Debrecen, Hungary
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
| | - Brigitta Csernus
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
| | - Gabriella Gulyás
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Renáta Knop
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Csaba Szabó
- Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Levente Czeglédi
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Ádám Z Lendvai
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
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Galal MA, Al-Rimawi M, Hajeer A, Dahman H, Alouch S, Aljada A. Metformin: A Dual-Role Player in Cancer Treatment and Prevention. Int J Mol Sci 2024; 25:4083. [PMID: 38612893 PMCID: PMC11012626 DOI: 10.3390/ijms25074083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/30/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
Cancer continues to pose a significant global health challenge, as evidenced by the increasing incidence rates and high mortality rates, despite the advancements made in chemotherapy. The emergence of chemoresistance further complicates the effectiveness of treatment. However, there is growing interest in the potential of metformin, a commonly prescribed drug for type 2 diabetes mellitus (T2DM), as an adjuvant chemotherapy agent in cancer treatment. Although the precise mechanism of action of metformin in cancer therapy is not fully understood, it has been found to have pleiotropic effects, including the modulation of metabolic pathways, reduction in inflammation, and the regulation of cellular proliferation. This comprehensive review examines the anticancer properties of metformin, drawing insights from various studies conducted in vitro and in vivo, as well as from clinical trials and observational research. This review discusses the mechanisms of action involving both insulin-dependent and independent pathways, shedding light on the potential of metformin as a therapeutic agent for different types of cancer. Despite promising findings, there are challenges that need to be addressed, such as conflicting outcomes in clinical trials, considerations regarding dosing, and the development of resistance. These challenges highlight the importance of further research to fully harness the therapeutic potential of metformin in cancer treatment. The aims of this review are to provide a contemporary understanding of the role of metformin in cancer therapy and identify areas for future exploration in the pursuit of effective anticancer strategies.
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Affiliation(s)
- Mariam Ahmed Galal
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia; (M.A.G.); (M.A.-R.); (H.D.); (S.A.)
- Department of Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 1QU, UK
| | - Mohammed Al-Rimawi
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia; (M.A.G.); (M.A.-R.); (H.D.); (S.A.)
| | | | - Huda Dahman
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia; (M.A.G.); (M.A.-R.); (H.D.); (S.A.)
| | - Samhar Alouch
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia; (M.A.G.); (M.A.-R.); (H.D.); (S.A.)
| | - Ahmad Aljada
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia; (M.A.G.); (M.A.-R.); (H.D.); (S.A.)
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Yu L, Wan Q, Liu Q, Fan Y, Zhou Q, Skowronski AA, Wang S, Shao Z, Liao CY, Ding L, Kennedy BK, Zha S, Que J, LeDuc CA, Sun L, Wang L, Qiang L. IgG is an aging factor that drives adipose tissue fibrosis and metabolic decline. Cell Metab 2024; 36:793-807.e5. [PMID: 38378001 PMCID: PMC11070064 DOI: 10.1016/j.cmet.2024.01.015] [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: 05/14/2023] [Revised: 10/31/2023] [Accepted: 01/25/2024] [Indexed: 02/22/2024]
Abstract
Aging is underpinned by pronounced metabolic decline; however, the drivers remain obscure. Here, we report that IgG accumulates during aging, particularly in white adipose tissue (WAT), to impair adipose tissue function and metabolic health. Caloric restriction (CR) decreases IgG accumulation in WAT, whereas replenishing IgG counteracts CR's metabolic benefits. IgG activates macrophages via Ras signaling and consequently induces fibrosis in WAT through the TGF-β/SMAD pathway. Consistently, B cell null mice are protected from aging-associated WAT fibrosis, inflammation, and insulin resistance, unless exposed to IgG. Conditional ablation of the IgG recycling receptor, neonatal Fc receptor (FcRn), in macrophages prevents IgG accumulation in aging, resulting in prolonged healthspan and lifespan. Further, targeting FcRn by antisense oligonucleotide restores WAT integrity and metabolic health in aged mice. These findings pinpoint IgG as a hidden culprit in aging and enlighten a novel strategy to rejuvenate metabolic health.
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Affiliation(s)
- Lexiang Yu
- Naomi Berrie Diabetes Center, Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Qianfen Wan
- Naomi Berrie Diabetes Center, Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Qiongming Liu
- Naomi Berrie Diabetes Center, Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Yong Fan
- Naomi Berrie Diabetes Center, Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Qiuzhong Zhou
- Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore
| | - Alicja A Skowronski
- Naomi Berrie Diabetes Center, Department of Pediatrics, Columbia University, New York, NY 10032, USA
| | - Summer Wang
- Institute for Cancer Genetics, Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Zhengping Shao
- Institute for Cancer Genetics, Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Chen-Yu Liao
- Buck Institute for Research on Aging, Novato, CA 94945, USA
| | - Lei Ding
- Department of Rehabilitation and Regenerative Medicine, Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Brian K Kennedy
- Buck Institute for Research on Aging, Novato, CA 94945, USA; Healthy Longevity Translational Research Programme, Departments of Biochemistry and Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Health Longevity, National University Health System, Singapore, Singapore
| | - Shan Zha
- Institute for Cancer Genetics, Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Jianwen Que
- Department of Medicine, Columbia University, New York, NY 10032, USA
| | - Charles A LeDuc
- Naomi Berrie Diabetes Center, Department of Pediatrics, Columbia University, New York, NY 10032, USA
| | - Lei Sun
- Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore, Singapore
| | - Liheng Wang
- Institute of Cardiovascular Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Department of Medicine, Division of Endocrinology, Diabetes, Obesity, and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Li Qiang
- Department of Pharmacology, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing 100191, China; Naomi Berrie Diabetes Center, Department of Medicine, Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA.
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Salama RM, Eissa N, Doghish AS, Abulsoud AI, Abdelmaksoud NM, Mohammed OA, Abdel Mageed SS, Darwish SF. Decoding the secrets of longevity: unraveling nutraceutical and miRNA-Mediated aging pathways and therapeutic strategies. FRONTIERS IN AGING 2024; 5:1373741. [PMID: 38605867 PMCID: PMC11007187 DOI: 10.3389/fragi.2024.1373741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 03/04/2024] [Indexed: 04/13/2024]
Abstract
MicroRNAs (miRNAs) are short RNA molecules that are not involved in coding for proteins. They have a significant function in regulating gene expression after the process of transcription. Their participation in several biological processes has rendered them appealing subjects for investigating age-related disorders. Increasing data indicates that miRNAs can be influenced by dietary variables, such as macronutrients, micronutrients, trace minerals, and nutraceuticals. This review examines the influence of dietary factors and nutraceuticals on the regulation of miRNA in relation to the process of aging. We examine the present comprehension of miRNA disruption in age-related illnesses and emphasize the possibility of dietary manipulation as a means of prevention or treatment. Consolidating animal and human research is essential to validate the significance of dietary miRNA control in living organisms, despite the abundance of information already provided by several studies. This review elucidates the complex interaction among miRNAs, nutrition, and aging, offering valuable insights into promising areas for further research and potential therapies for age-related disorders.
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Affiliation(s)
- Rania M. Salama
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Misr International University, Cairo, Egypt
| | - Nermin Eissa
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi, United Arab Emirates
| | - Ahmed S. Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Cairo, Egypt
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Egypt
| | - Ahmed I. Abulsoud
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Nasr City, Egypt
- Biochemistry Department, Faculty of Pharmacy, Heliopolis University, Cairo, Egypt
| | | | - Osama A. Mohammed
- Department of Pharmacology, College of Medicine, University of Bisha, Bisha, Saudi Arabia
| | - Sherif S. Abdel Mageed
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Cairo, Egypt
| | - Samar F. Darwish
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Badr University in Cairo (BUC), Cairo, Egypt
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Parvaresh H, Paczek K, Al-Bari MAA, Eid N. Mechanistic insights into fasting-induced autophagy in the aging heart. World J Cardiol 2024; 16:109-117. [PMID: 38576517 PMCID: PMC10989221 DOI: 10.4330/wjc.v16.i3.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/01/2024] [Accepted: 03/04/2024] [Indexed: 03/21/2024] Open
Abstract
Autophagy is a prosurvival mechanism for the clearance of accumulated abnormal proteins, damaged organelles, and excessive lipids within mammalian cells. A growing body of data indicates that autophagy is reduced in aging cells. This reduction leads to various diseases, such as myocardial hypertrophy, infarction, and atherosclerosis. Recent studies in animal models of an aging heart showed that fasting-induced autophagy improved cardiac function and longevity. This improvement is related to autophagic clearance of damaged cellular components via either bulk or selective autophagy (such as mitophagy). In this editorial, we summarize the mechanisms of autophagy in normal and aging hearts. In addition, the protective effect of fasting-induced autophagy in cardiac aging has been highlighted.
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Affiliation(s)
- Hannaneh Parvaresh
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
| | - Katarzyna Paczek
- Department of Chiropractic, International Medical University, Kuala Lumpur 57000, Malaysia
| | | | - Nabil Eid
- Department of Anatomy, Division of Human Biology, School of Medicine, International Medical University, Kuala Lumpur 57000, Malaysia.
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49
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Di Domenico F, Lanzillotta C, Perluigi M. Redox imbalance and metabolic defects in the context of Alzheimer disease. FEBS Lett 2024. [PMID: 38472147 DOI: 10.1002/1873-3468.14840] [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: 10/17/2023] [Revised: 02/12/2024] [Accepted: 02/12/2024] [Indexed: 03/14/2024]
Abstract
Redox reactions play a critical role for intracellular processes, including pathways involved in metabolism and signaling. Reactive oxygen species (ROS) act either as second messengers or generators of protein modifications, fundamental mechanisms for signal transduction. Disturbance of redox homeostasis is associated with many disorders. Among these, Alzheimer's disease is a neurodegenerative pathology that presents hallmarks of oxidative damage such as increased ROS production, decreased activity of antioxidant enzymes, oxidative modifications of macromolecules, and changes in mitochondrial homeostasis. Interestingly, alteration of redox homeostasis is closely associated with defects of energy metabolism, involving both carbohydrates and lipids, the major energy fuels for the cell. As the brain relies exclusively on glucose metabolism, defects of glucose utilization represent a harmful event for the brain. During aging, a progressive perturbation of energy metabolism occurs resulting in brain hypometabolism. This condition contributes to increase neuronal cell vulnerability ultimately resulting in cognitive impairment. The current review discusses the crosstalk between alteration of redox homeostasis and brain energy defects that seems to act in concert in promoting Alzheimer's neurodegeneration.
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Affiliation(s)
- Fabio Di Domenico
- Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, Italy
| | - Chiara Lanzillotta
- Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, Italy
| | - Marzia Perluigi
- Department of Biochemical Sciences "A. Rossi Fanelli", Sapienza University of Rome, Italy
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Rome, Italy
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50
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Zhang J, Gong H, Zhao T, Xu W, Chen H, Li T, Yang Y, Yang M, Huang N, Gong C, Wang F, Zhang C, Liu J, Xiao H. AMPK-upregulated microRNA-708 plays as a suppressor of cellular senescence and aging via downregulating disabled-2 and mTORC1 activation. MedComm (Beijing) 2024; 5:e475. [PMID: 38463393 PMCID: PMC10924637 DOI: 10.1002/mco2.475] [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: 03/31/2023] [Revised: 12/07/2023] [Accepted: 12/26/2023] [Indexed: 03/12/2024] Open
Abstract
Senescence-associated microRNAs (SA-miRNAs) are important molecules for aging regulation. While many aging-promoting SA-miRNAs have been identified, confirmed aging-suppressive SA-miRNAs are rare, that impeded our full understanding on aging regulation. In this study, we verified that miR-708 expression is decreased in senescent cells and aged tissues and revealed that miR-708 overexpression can alleviate cellular senescence and aging performance. About the molecular cascade carrying the aging suppressive action of miR-708, we unraveled that miR-708 directly targets the 3'UTR of the disabled 2 (Dab2) gene and inhibits the expression of DAB2. Interestingly, miR-708-caused DAB2 downregulation blocks the aberrant mammalian target of rapamycin complex 1 (mTORC1) activation, a driving metabolic event for senescence progression, and restores the impaired autophagy, a downstream event of aberrant mTORC1 activation. We also found that AMP-activated protein kinase (AMPK) activation can upregulate miR-708 via the elevation of DICER expression, and miR-708 inhibitor is able to blunt the antiaging effect of AMPK. In summary, this study characterized miR-708 as an aging-suppressive SA-miRNA for the first time and uncovered a new signaling cascade, in which miR-708 links the DAB2/mTOR axis and AMPK/DICER axis together. These findings not only demonstrate the potential role of miR-708 in aging regulation, but also expand the signaling network connecting AMPK and mTORC1.
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Affiliation(s)
- Jian Zhang
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
- Department of Biochemistry and Molecular Biology and Molecular Medicine and Cancer Research Center College of Basic Medical Sciences Chongqing Medical University Chongqing China
| | - Hui Gong
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Tingting Zhao
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Weitong Xu
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Honghan Chen
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Tiepeng Li
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Yu Yang
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Ming Yang
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Ning Huang
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Chuhui Gong
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Fangfang Wang
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Cuiying Zhang
- Department of Laboratory Medicine The Second People's Hospital of Changzhi City Changzhi China
| | - Jin Liu
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Hengyi Xiao
- The Department of Aging and Geriatric Medicine National Clinical Research Center for Geriatrics State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
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