1
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Jang DH, Shin JW, Shim E, Ohtani N, Jeon OH. The connection between aging, cellular senescence and gut microbiome alterations: A comprehensive review. Aging Cell 2024:e14315. [PMID: 39148278 DOI: 10.1111/acel.14315] [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: 03/26/2024] [Revised: 07/24/2024] [Accepted: 08/06/2024] [Indexed: 08/17/2024] Open
Abstract
The intricate interplay between cellular senescence and alterations in the gut microbiome emerges as a pivotal axis in the aging process, increasingly recognized for its contribution to systemic inflammation, physiological decline, and predisposition to age-associated diseases. Cellular senescence, characterized by a cessation of cell division in response to various stressors, induces morphological and functional changes within tissues. The complexity and heterogeneity of senescent cells, alongside the secretion of senescence-associated secretory phenotype, exacerbate the aging process through pro-inflammatory pathways and influence the microenvironment and immune system. Concurrently, aging-associated changes in gut microbiome diversity and composition contribute to dysbiosis, further exacerbating systemic inflammation and undermining the integrity of various bodily functions. This review encapsulates the burgeoning research on the reciprocal relationship between cellular senescence and gut dysbiosis, highlighting their collective impact on age-related musculoskeletal diseases, including osteoporosis, sarcopenia, and osteoarthritis. It also explores the potential of modulating the gut microbiome and targeting cellular senescence as innovative strategies for healthy aging and mitigating the progression of aging-related conditions. By exploring targeted interventions, including the development of senotherapeutic drugs and probiotic therapies, this review aims to shed light on novel therapeutic avenues. These strategies leverage the connection between cellular senescence and gut microbiome alterations to advance aging research and development of interventions aimed at extending health span and improving the quality of life in the older population.
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Affiliation(s)
- Dong-Hyun Jang
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea
| | - Ji-Won Shin
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea
| | - Eunha Shim
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea
| | - Naoko Ohtani
- Department of Pathophysiology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Ok Hee Jeon
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, Republic of Korea
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2
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Ogrodnik M, Carlos Acosta J, Adams PD, d'Adda di Fagagna F, Baker DJ, Bishop CL, Chandra T, Collado M, Gil J, Gorgoulis V, Gruber F, Hara E, Jansen-Dürr P, Jurk D, Khosla S, Kirkland JL, Krizhanovsky V, Minamino T, Niedernhofer LJ, Passos JF, Ring NAR, Redl H, Robbins PD, Rodier F, Scharffetter-Kochanek K, Sedivy JM, Sikora E, Witwer K, von Zglinicki T, Yun MH, Grillari J, Demaria M. Guidelines for minimal information on cellular senescence experimentation in vivo. Cell 2024; 187:4150-4175. [PMID: 39121846 DOI: 10.1016/j.cell.2024.05.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 05/27/2024] [Accepted: 05/31/2024] [Indexed: 08/12/2024]
Abstract
Cellular senescence is a cell fate triggered in response to stress and is characterized by stable cell-cycle arrest and a hypersecretory state. It has diverse biological roles, ranging from tissue repair to chronic disease. The development of new tools to study senescence in vivo has paved the way for uncovering its physiological and pathological roles and testing senescent cells as a therapeutic target. However, the lack of specific and broadly applicable markers makes it difficult to identify and characterize senescent cells in tissues and living organisms. To address this, we provide practical guidelines called "minimum information for cellular senescence experimentation in vivo" (MICSE). It presents an overview of senescence markers in rodent tissues, transgenic models, non-mammalian systems, human tissues, and tumors and their use in the identification and specification of senescent cells. These guidelines provide a uniform, state-of-the-art, and accessible toolset to improve our understanding of cellular senescence in vivo.
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Affiliation(s)
- Mikolaj Ogrodnik
- Ludwig Boltzmann Research Group Senescence and Healing of Wounds, 1200 Vienna, Austria; Ludwig Boltzmann Institute for Traumatology, The Research Centre in Cooperation with AUVA, 1200 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria.
| | - Juan Carlos Acosta
- Cancer Research UK Scotland Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XR, UK; Instituto de Biomedicina y Biotecnología de Cantabria, IBBTEC (CSIC, Universidad de Cantabria), C/ Albert Einstein 22, 39011 Santander, Spain
| | - Peter D Adams
- Cancer Genome and Epigenetics Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Fabrizio d'Adda di Fagagna
- IFOM ETS - The AIRC Institute of Molecular Oncology, Milan, Italy; Institute of Molecular Genetics IGM-CNR "Luigi Luca Cavalli-Sforza," Pavia, Italy
| | - Darren J Baker
- Department of Biochemistry and Molecular Biology, Department of Pediatric and Adolescent Medicine, Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First Steet SW, Rochester, MN 55905, USA
| | - Cleo L Bishop
- Blizard Institute, Barts and The London Faculty of Medicine and Dentistry, Queen Mary University of London, 4 Newark Street, London E1 2AT, UK
| | - Tamir Chandra
- MRC Human Generics Unit, University of Edinburgh, Edinburgh, UK
| | - Manuel Collado
- Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; Department of Immunology and Oncology (DIO), Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Jesus Gil
- MRC Laboratory of Medical Sciences (LMS), Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences (ICS), Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Vassilis Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece; Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece; Ninewells Hospital and Medical School, University of Dundee, Dundee DD19SY, UK; Faculty Institute for Cancer Sciences, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M20 4GJ, UK; Faculty of Health and Medical Sciences, University of Surrey, Surrey GU2 7YH, UK
| | - Florian Gruber
- Department of Dermatology, Medical University of Vienna, Vienna, Austria; Christian Doppler Laboratory for Skin Multimodal Imaging of Aging and Senescence - SKINMAGINE, Vienna, Austria
| | - Eiji Hara
- Research Institute for Microbial Diseases (RIMD), Osaka University, Suita 565-0871, Japan; Immunology Frontier Research Center (IFReC), Osaka University, Suita 565-0871, Japan
| | - Pidder Jansen-Dürr
- Institute for Biomedical Aging Research, University of Innsbruck, and Center for Molecular Biosciences Innsbruck (CMBI), Innsbruck, Austria
| | - Diana Jurk
- Mayo Clinic, Department of Physiology and Biomedical Engineering, Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
| | - Sundeep Khosla
- Kogod Center on Aging and Division of Endocrinology, Mayo Clinic, Rochester, MN, USA
| | - James L Kirkland
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA; Division of General Internal Medicine, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Valery Krizhanovsky
- Department of Molecular Cell Biology, The Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo 113-8421, Japan; Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo 100-0004, Japan
| | - Laura J Niedernhofer
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 6-155 Jackson Hall, 321 Church Street, SE, Minneapolis, MN 55455, USA
| | - João F Passos
- Mayo Clinic, Department of Physiology and Biomedical Engineering, Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
| | - Nadja A R Ring
- Ludwig Boltzmann Research Group Senescence and Healing of Wounds, 1200 Vienna, Austria; Ludwig Boltzmann Institute for Traumatology, The Research Centre in Cooperation with AUVA, 1200 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Heinz Redl
- Ludwig Boltzmann Research Group Senescence and Healing of Wounds, 1200 Vienna, Austria; Ludwig Boltzmann Institute for Traumatology, The Research Centre in Cooperation with AUVA, 1200 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Paul D Robbins
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, 6-155 Jackson Hall, 321 Church Street, SE, Minneapolis, MN 55455, USA
| | - Francis Rodier
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Montreal, QC, Canada; Institut du cancer de Montréal, Montreal, QC, Canada; Université de Montréal, Département de radiologie, radio-oncologie et médicine nucléaire, Montreal, QC, Canada
| | - Karin Scharffetter-Kochanek
- Department f Dermatology and Allergic Diseases, Ulm University Hospital, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - John M Sedivy
- Department of Molecular, Cellular Biology and Biochemistry, Center on the Biology of Aging, Brown University, Providence, RI, USA
| | - Ewa Sikora
- Laboratory of Molecular Bases of Aging, Nencki Institute of Experimental Biology, Polish Academy of Sciences, 02-093 Warsaw, Poland
| | - Kenneth Witwer
- The Johns Hopkins University School of Medicine, Department of Molecular and Comparative Pathobiology, Baltimore, MD, USA; The Johns Hopkins University School of Medicine, Department of Neurology, Baltimore, MD, USA
| | - Thomas von Zglinicki
- Newcastle University Biosciences Institute, Ageing Biology Laboratories, Newcastle upon Tyne, UK
| | - Maximina H Yun
- Technische Universität Dresden, CRTD/Center for Regenerative Therapies Dresden, Dresden, Germany; Max Planck Institute of Molecular Cellular Biology and Genetics, Dresden, Germany; Physics of Life Excellence Cluster, Dresden, Germany
| | - Johannes Grillari
- Ludwig Boltzmann Institute for Traumatology, The Research Centre in Cooperation with AUVA, 1200 Vienna, Austria; Austrian Cluster for Tissue Regeneration, Vienna, Austria; Institute of Molecular Biotechnology, BOKU University, Vienna, Austria.
| | - Marco Demaria
- European Research Institute for the Biology of Ageing (ERIBA), University Medical Center Groningen (UMCG), University of Groningen (RUG), Groningen, the Netherlands.
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Ahmad A, Braden A, Khan S, Xiao J, Khan MM. Crosstalk between the DNA damage response and cellular senescence drives aging and age-related diseases. Semin Immunopathol 2024; 46:10. [PMID: 39095660 DOI: 10.1007/s00281-024-01016-7] [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: 03/13/2024] [Accepted: 05/21/2024] [Indexed: 08/04/2024]
Abstract
Cellular senescence is a crucial process of irreversible cell-cycle arrest, in which cells remain alive, but permanently unable to proliferate in response to distinct types of stressors. Accumulating evidence suggests that DNA damage builds over time and triggers DNA damage response signaling, leading to cellular senescence. Cellular senescence serves as a platform for the perpetuation of inflammatory responses and is central to numerous age-related diseases. Defects in DNA repair genes or senescence can cause premature aging disease. Therapeutic approaches limiting DNA damage or senescence contribute to a rescued phenotype of longevity and neuroprotection, thus suggesting a mechanistic interaction between DNA damage and senescence. Here, we offer a unique perspective on the crosstalk between the DNA damage response pathway and senescence as well as their contribution to age-related diseases. We further summarize recent progress on the mechanisms and therapeutics of senescence, address existing challenges, and offering new insights and future directions in the senescence field.
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Affiliation(s)
- Ajmal Ahmad
- Department of Ophthalmology, College of Medicine, King Saud University Riyadh, Riyadh, Saudi Arabia
| | - Anneliesse Braden
- Department of Neurology, College of Medicine, University of Tennessee Health Science Center, 855 Monroe Avenue, Suite 415 Link Building, Memphis, TN, 38163, USA
- Neuroscience Institute, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Sazzad Khan
- Department of Neurology, College of Medicine, University of Tennessee Health Science Center, 855 Monroe Avenue, Suite 415 Link Building, Memphis, TN, 38163, USA
| | - Jianfeng Xiao
- Department of Neurology, College of Medicine, University of Tennessee Health Science Center, 855 Monroe Avenue, Suite 415 Link Building, Memphis, TN, 38163, USA
| | - Mohammad Moshahid Khan
- Department of Neurology, College of Medicine, University of Tennessee Health Science Center, 855 Monroe Avenue, Suite 415 Link Building, Memphis, TN, 38163, USA.
- Neuroscience Institute, University of Tennessee Health Science Center, Memphis, TN, USA.
- Center for Muscle, Metabolism and Neuropathology, Division of Regenerative and Rehabilitation Sciences, Department of Physical Therapy, College of Health Professions, University of Tennessee Health Science Center, Memphis, TN, USA.
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Mahmud S, Pitcher LE, Torbenson E, Robbins PD, Zhang L, Dong X. Developing transcriptomic signatures as a biomarker of cellular senescence. Ageing Res Rev 2024; 99:102403. [PMID: 38964507 DOI: 10.1016/j.arr.2024.102403] [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: 12/18/2023] [Revised: 06/07/2024] [Accepted: 07/01/2024] [Indexed: 07/06/2024]
Abstract
Cellular senescence is a cell fate driven by different types of stress, where damaged cells exit from the cell cycle and, in many cases, develop an inflammatory senescence-associated secretory phenotype (SASP). Senescence has often been linked to driving aging and the onset of multiple diseases conferred by the harmful SASP, which disrupts tissue homeostasis and impairs the regular function of many tissues. This phenomenon was first observed in vitro when fibroblasts halted replication after approximately 50 population doublings. In addition to replication-induced senescence, factors such as DNA damage and oncogene activation can induce cellular senescence both in culture and in vivo. Despite their contribution to aging and disease, identifying senescent cells in vivo has been challenging due to their heterogeneity. Although senescent cells can express the cell cycle inhibitors p16Ink4a and/or p21Cip1 and exhibit SA-ß-gal activity and evidence of a DNA damage response, there is no universal biomarker for these cells, regardless of inducer or cell type. Recent studies have analyzed the transcriptomic characteristics of these cells, leading to the identification of signature gene sets like CellAge, SeneQuest, and SenMayo. Advancements in single-cell and spatial RNA sequencing now allow for analyzing senescent cell heterogeneity within the same tissue and the development of machine learning algorithms, e.g., SenPred, SenSig, and SenCID, to discover cellular senescence using RNA sequencing data. Such insights not only deepen our understanding of the genetic pathways driving cellular senescence, but also promote the development of its quantifiable biomarkers. This review summarizes the current knowledge of transcriptomic signatures of cellular senescence and their potential as in vivo biomarkers.
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Affiliation(s)
- Shamsed Mahmud
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA
| | - Louise E Pitcher
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA; Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA
| | - Elijah Torbenson
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA
| | - Paul D Robbins
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA; Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA
| | - Lei Zhang
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA; Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA
| | - Xiao Dong
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA; Department of Genetics, Cell Biology, and Development, University of Minnesota, Twin Cities, 420 Washington Avenue SE, Minneapolis, MN 55455, USA.
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5
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Chesnokova V, Zonis S, Apaydin T, Barrett R, Melmed S. Non-pituitary growth hormone enables colon cell senescence evasion. Aging Cell 2024; 23:e14193. [PMID: 38724466 PMCID: PMC11320355 DOI: 10.1111/acel.14193] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 03/18/2024] [Accepted: 04/02/2024] [Indexed: 08/15/2024] Open
Abstract
DNA damage-induced senescence is initially sustained by p53. Senescent cells produce a senescence-associated secretory phenotype (SASP) that impacts the aging microenvironment, often promoting cell transformation. Employing normal non-tumorous human colon cells (hNCC) derived from surgical biopsies and three-dimensional human intestinal organoids, we show that local non-pituitary growth hormone (npGH) induced in senescent cells is a SASP component acting to suppress p53. npGH autocrine/paracrine suppression of p53 results in senescence evasion and cell-cycle reentry, as evidenced by increased Ki67 and BrdU incorporation. Post-senescent cells exhibit activated epithelial-to-mesenchymal transition (EMT), and increased cell motility. Nu/J mice harboring GH-secreting HCT116 xenografts with resultant high GH levels and injected intrasplenic with post-senescent hNCC developed fourfold more metastases than did mice harboring control xenografts, suggesting that paracrine npGH enables post-senescent cell transformation. By contrast, senescent cells with suppressed npGH exhibit downregulated Ki67 and decreased soft agar colony formation. Mechanisms underlying these observations include npGH induction by the SASP chemokine CXCL1, which attracts immune effectors to eliminate senescent cells; GH, in turn, suppresses CXCL1, likely by inhibiting phospho-NFκB, resulting in SASP cytokine downregulation. Consistent with these findings, GH-receptor knockout mice exhibited increased colon phospho-NFκB and CXCL1, while GH excess decreased colon CXCL1. The results elucidate mechanisms for local hormonal regulation of microenvironmental changes in DNA-damaged non-tumorous epithelial cells and portray a heretofore unappreciated GH action favoring age-associated epithelial cell transformation.
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Affiliation(s)
- Vera Chesnokova
- Department of MedicineCedars‐Sinai Medical CenterLos AngelesCaliforniaUSA
| | - Svetlana Zonis
- Department of MedicineCedars‐Sinai Medical CenterLos AngelesCaliforniaUSA
| | - Tugce Apaydin
- Department of MedicineCedars‐Sinai Medical CenterLos AngelesCaliforniaUSA
| | - Robert Barrett
- Board of Governors Regenerative Medicine InstituteCedars‐Sinai Medical CenterLos AngelesCaliforniaUSA
| | - Shlomo Melmed
- Department of MedicineCedars‐Sinai Medical CenterLos AngelesCaliforniaUSA
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Wu W, Song A, Xie K, Lu J, Zhao B, Qian C, Wang M, Min L, Hong W, Pang H, Lu R, Gu L. Characteristics of T cell premature senescence in maintenance hemodialysis patients. Inflamm Res 2024; 73:1299-1309. [PMID: 38850344 DOI: 10.1007/s00011-024-01897-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 05/26/2024] [Accepted: 05/27/2024] [Indexed: 06/10/2024] Open
Abstract
BACKGROUND Uremia-associated immunodeficiency, mainly characterized by T cell dysfunction, exists in patients on maintenance hemodialysis (MHD) and promotes systemic inflammation. However, T cell senescence, one of the causes of T cell dysfunction, has not been clearly revealed yet. In this cross-sectional research, we aimed to study the manifestation of T cell premature senescence in MHD patients and further investigate the associated clinical factors. METHODS 76 MHD patients including 33 patients with cardiovascular diseases (CVD) and 28 patients with arteriovenous fistula (AVF) event history were enrolled in this study. Complementarity determining region 3 (CDR3) of T cell receptor (TCR) was analyzed by immune repertoire sequencing (IR-Seq). CD28- T cell subsets and expression of senescence marker p16 and p21 genes were detected by multicolor flow cytometry and RT-qPCR, respectively. RESULTS MHD patients had significantly decreased TCR diversity (P < 0.001), increased CDR3 clone proliferation (P = 0.001) and a left-skewed CDR3 length distribution. The proportion of CD4 + CD28- T cells increased in MHD patients (P = 0.014) and showed a negative correlation with TCR diversity (P = 0.001). p16 but not p21 expression in T cells was up-regulated in MHD patients (P = 0.039). Patients with CVD exhibited increased expression of p16 and p21 genes (P = 0.010 and 0.004, respectively), and patients with AVF events showed further TCR diversity and evenness reduction (P = 0.002 and 0.017, respectively) compared to patients without the comorbidities. Moreover, age, average convection volume, total cholesterol, high-density lipoprotein cholesterol and transferrin saturation were associated with TCR diversity or CD4 + CD28- T cell proportion (P < 0.05). CONCLUSIONS MHD patients undergo T cell premature senescence characterized by significant TCR diversity reduction and repertoire skew, as well as accumulation of the CD4 + CD28- subset and up-regulation of p16 gene. Patients with CVD or AVF events show higher level of immunosenescence. Furthermore, T cell senescence in MHD patients is associated with blood cholesterol and uremic toxin retention, suggesting potential intervention strategies in the future.
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Affiliation(s)
- Wangshu Wu
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Ahui Song
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Kewei Xie
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Jiayue Lu
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Bingru Zhao
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Cheng Qian
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Minzhou Wang
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Lulin Min
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Wenkai Hong
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China
| | - Huihua Pang
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China.
| | - Renhua Lu
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China.
| | - Leyi Gu
- Department of Nephrology, Molecular Cell Lab for Kidney Disease, Shanghai Peritoneal Dialysis Research Center, Renji Hospital, Uremia Diagnosis and Treatment Center, Shanghai Jiao Tong University School of Medicine, 160# Pujian Road, Building 1, 2nd Floor, Shanghai, 200127, China.
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7
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Takaya K, Kishi K. Combined dasatinib and quercetin treatment contributes to skin rejuvenation through selective elimination of senescent cells in vitro and in vivo. Biogerontology 2024; 25:691-704. [PMID: 38619669 DOI: 10.1007/s10522-024-10103-z] [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: 01/26/2024] [Accepted: 03/04/2024] [Indexed: 04/16/2024]
Abstract
The skin's protective functions are compromised over time by both endogenous and exogenous aging. Senescence is well-documented in skin phenotypes, such as wrinkling and sagging, a consequence of the senescence-associated secretory phenotype (SASP) that involves the accumulation of senescent fibroblasts, chronic inflammation, and collagen remodeling. Although therapeutic approaches for eliminating senescent cells from the skin are available, their efficacy remains unclear. Accordingly, we aimed to examine the effects of dasatinib in combination with quercetin (D + Q) on senescent human skin fibroblasts and aging human skin. Senescence was induced in human dermal fibroblasts (HDFs) using approaches such as long-term passaging, ionizing radiation, and doxorubicin treatment. The generated senescent cells were treated with D + Q or vehicle. Additionally, a mouse-human chimera model was generated by subcutaneously transplanting whole-skin grafts of aged individuals onto nude mice. Mouse models were administered D + Q or vehicle by oral gavage for 30 days. Subsequently, skin samples were harvested and stained for senescence-associated beta-galactosidase. Senescence-associated markers were assessed by western blotting, reverse transcription-quantitative PCR and histological analyses. Herein, D + Q selectively eliminated senescent HDFs in all cellular models of induced senescence. Additionally, D + Q-treated aged human skin grafts exhibited increased collagen density and suppression of the SASP compared with control grafts. No adverse events were observed during the study period. Collectively, D + Q could ameliorate skin aging through selective elimination of senescent dermal fibroblasts and suppression of the SASP. Our findings suggest that D + Q could be developed as an effective therapeutic approach for combating skin aging.
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Affiliation(s)
- Kento Takaya
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan.
| | - Kazuo Kishi
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo, Japan
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8
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Shim HS, Iaconelli J, Shang X, Li J, Lan ZD, Jiang S, Nutsch K, Beyer BA, Lairson LL, Boutin AT, Bollong MJ, Schultz PG, DePinho RA. TERT activation targets DNA methylation and multiple aging hallmarks. Cell 2024; 187:4030-4042.e13. [PMID: 38908367 DOI: 10.1016/j.cell.2024.05.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 04/03/2024] [Accepted: 05/23/2024] [Indexed: 06/24/2024]
Abstract
Insufficient telomerase activity, stemming from low telomerase reverse transcriptase (TERT) gene transcription, contributes to telomere dysfunction and aging pathologies. Besides its traditional function in telomere synthesis, TERT acts as a transcriptional co-regulator of genes pivotal in aging and age-associated diseases. Here, we report the identification of a TERT activator compound (TAC) that upregulates TERT transcription via the MEK/ERK/AP-1 cascade. In primary human cells and naturally aged mice, TAC-induced elevation of TERT levels promotes telomere synthesis, blunts tissue aging hallmarks with reduced cellular senescence and inflammatory cytokines, and silences p16INK4a expression via upregulation of DNMT3B-mediated promoter hypermethylation. In the brain, TAC alleviates neuroinflammation, increases neurotrophic factors, stimulates adult neurogenesis, and preserves cognitive function without evident toxicity, including cancer risk. Together, these findings underscore TERT's critical role in aging processes and provide preclinical proof of concept for physiological TERT activation as a strategy to mitigate multiple aging hallmarks and associated pathologies.
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Affiliation(s)
- Hong Seok Shim
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jonathan Iaconelli
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Xiaoying Shang
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jiexi Li
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Zheng D Lan
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shan Jiang
- Institute for Applied Cancer Science, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kayla Nutsch
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Brittney A Beyer
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Luke L Lairson
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Adam T Boutin
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Michael J Bollong
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Peter G Schultz
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Ronald A DePinho
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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9
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Hense JD, Isola JVV, Garcia DN, Magalhães LS, Masternak MM, Stout MB, Schneider A. The role of cellular senescence in ovarian aging. NPJ AGING 2024; 10:35. [PMID: 39033161 PMCID: PMC11271274 DOI: 10.1038/s41514-024-00157-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 05/29/2024] [Indexed: 07/23/2024]
Abstract
This review explores the relationship between ovarian aging and senescent cell accumulation, as well as the efficacy of senolytics to improve reproductive longevity. Reproductive longevity is determined by the age-associated decline in ovarian reserve, resulting in reduced fertility and eventually menopause. Cellular senescence is a state of permanent cell cycle arrest and resistance to apoptosis. Senescent cells accumulate in several tissues with advancing age, thereby promoting chronic inflammation and age-related diseases. Ovaries also appear to accumulate senescent cells with age, which might contribute to aging of the reproductive system and whole organism through SASP production. Importantly, senolytic drugs can eliminate senescent cells and may present a potential intervention to mitigate ovarian aging. Herein, we review the current literature related to the efficacy of senolytic drugs for extending the reproductive window in mice.
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Affiliation(s)
- Jéssica D Hense
- Aging & Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- Nutrition College, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | - José V V Isola
- Aging & Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Driele N Garcia
- Nutrition College, Universidade Federal de Pelotas, Pelotas, RS, Brazil
| | | | - Michal M Masternak
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, USA
| | - Michael B Stout
- Aging & Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- Oklahoma City Veterans Affairs Medical Center, Oklahoma City, OK, USA
| | - Augusto Schneider
- Nutrition College, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
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10
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Guan Q, Zhang Y, Wang ZK, Liu XH, Zou J, Zhang LL. Skeletal phenotypes and molecular mechanisms in aging mice. Zool Res 2024; 45:724-746. [PMID: 38894518 PMCID: PMC11298674 DOI: 10.24272/j.issn.2095-8137.2023.397] [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] [Accepted: 03/28/2024] [Indexed: 06/21/2024] Open
Abstract
Aging is an inevitable physiological process, often accompanied by age-related bone loss and subsequent bone-related diseases that pose serious health risks. Research on skeletal diseases caused by aging in humans is challenging due to lengthy study durations, difficulties in sampling, regional variability, and substantial investment. Consequently, mice are preferred for such studies due to their similar motor system structure and function to humans, ease of handling and care, low cost, and short generation time. In this review, we present a comprehensive overview of the characteristics, limitations, applicability, bone phenotypes, and treatment methods in naturally aging mice and prematurely aging mouse models (including SAMP6, POLG mutant, LMNA, SIRT6, ZMPSTE24, TFAM, ERCC1, WERNER, and KL/KL-deficient mice). We also summarize the molecular mechanisms of these aging mouse models, including cellular DNA damage response, senescence-related secretory phenotype, telomere shortening, oxidative stress, bone marrow mesenchymal stem cell (BMSC) abnormalities, and mitochondrial dysfunction. Overall, this review aims to enhance our understanding of the pathogenesis of aging-related bone diseases.
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Affiliation(s)
- Qiao Guan
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Yuan Zhang
- College of Athletic Performance, Shanghai University of Sport, Shanghai 200438, China
| | - Zhi-Kun Wang
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Xiao-Hua Liu
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Jun Zou
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China
| | - Ling-Li Zhang
- College of Athletic Performance, Shanghai University of Sport, Shanghai 200438, China. E-mail:
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11
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Gwak E, Shin JW, Kim SY, Lee JT, Jeon OH, Choe SA. Exposure to ambient air pollution mixture and senescence-associated secretory phenotype proteins among middle-aged and older women. ENVIRONMENTAL RESEARCH 2024; 260:119642. [PMID: 39029725 DOI: 10.1016/j.envres.2024.119642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 06/30/2024] [Accepted: 07/17/2024] [Indexed: 07/21/2024]
Abstract
Our study aimed to investigate the impact of environmental exposures, such as ambient air pollutants, on systemic inflammation and cellular senescence in middle-aged and older women. We utilized epidemiological data linked with exposure data of six air pollutants (particulate matters [PM10, PM2.5], sulphur dioxide [SO2], nitrogen dioxide [NO2], carbon monoxide [CO], and ozone [O3]) and blood samples of 380 peri- and postmenopausal women participants of the Korean Genome and Epidemiology Study. We measured blood high-sensitivity C-reactive protein (hsCRP) and age-related 27 circulatory senescence-associated secretory phenotypes (SASP) produced by senescent cells. We employed single exposure models to explore the general pattern of association between air pollution exposure and proteomic markers. Using quantile g-computation models, we assessed the association of six air pollutant mixtures with hsCRP and SASP proteins. In single-exposure, single-period models, nine out of the 27 SASP proteins including IFN-γ (β = 0.04, 95% CI: 0.01, 0.07 per interquartile range-increase), IL-8 (0.15, 95% CI: 0.09, 0.20), and MIP1α (0.11, 95% CI: 0.04, 0.18) were positively associated with the average level of O3 over one week. Among the age-related SASP proteins, IFN-γ (0.11, 95% CI: 0.03, 0.20) and IL-8 (0.22, 95% CI: 0.05, 0.39) were positively associated with exposure to air pollutant mixture over one week. The MIP1β was higher with an increasing one-month average concentration of the air pollutant mixture (0.11, 95% CI: 0.00, 0.21). The IL-8 showed consistently positive association with the ambient air pollutant mixture for the exposure periods ranging from one week to one year. O3 predominantly showed positive weights in the associations between air pollutant mixtures and IL-8. These findings underscore the potential of proteomic indicators as markers for biological aging attributed to short-term air pollution exposure.
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Affiliation(s)
- Eunseon Gwak
- Department of Preventive Medicine, Korea University College of Medicine, Seoul, 02841, Republic of Korea
| | - Ji-Won Shin
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Republic of Korea
| | - Sun-Young Kim
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, 10408, Republic of Korea
| | - Jong Tae Lee
- School of Health Policy and Management, College of Health Sciences, Korea University, Seoul, 02841, Republic of Korea; Research and Management Center for Health Risk of Particulate Matter, Korea University, Seoul, 02841, Republic of Korea
| | - Ok Hee Jeon
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Republic of Korea.
| | - Seung-Ah Choe
- Department of Preventive Medicine, Korea University College of Medicine, Seoul, 02841, Republic of Korea; Research and Management Center for Health Risk of Particulate Matter, Korea University, Seoul, 02841, Republic of Korea.
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12
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Li Y, Baig N, Roncancio D, Elbein K, Lowe D, Kyba M, Arriaga EA. Multiparametric identification of putative senescent cells in skeletal muscle via mass cytometry. Cytometry A 2024. [PMID: 38995093 DOI: 10.1002/cyto.a.24853] [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: 12/31/2023] [Revised: 05/08/2024] [Accepted: 05/16/2024] [Indexed: 07/13/2024]
Abstract
Senescence is an irreversible arrest of the cell cycle that can be characterized by markers of senescence such as p16, p21, and KI-67. The characterization of different senescence-associated phenotypes requires selection of the most relevant senescence markers to define reliable cytometric methodologies. Mass cytometry (a.k.a. Cytometry by time of flight, CyTOF) can monitor up to 40 different cell markers at the single-cell level and has the potential to integrate multiple senescence and other phenotypic markers to identify senescent cells within a complex tissue such as skeletal muscle, with greater accuracy and scalability than traditional bulk measurements and flow cytometry-based measurements. This article introduces an analysis framework for detecting putative senescent cells based on clustering, outlier detection, and Boolean logic for outliers. Results show that the pipeline can identify putative senescent cells in skeletal muscle with well-established markers such as p21 and potential markers such as GAPDH. It was also found that heterogeneity of putative senescent cells in skeletal muscle can partly be explained by their cell type. Additionally, autophagy-related proteins ATG4A, LRRK2, and GLB1 were identified as important proteins in predicting the putative senescent population, providing insights into the association between autophagy and senescence. It was observed that sex did not affect the proportion of putative senescent cells among total cells. However, age did have an effect, with a higher proportion observed in fibro/adipogenic progenitors (FAPs), satellite cells, M1 and M2 macrophages from old mice. Moreover, putative senescent cells from muscle of old and young mice show different expression levels of senescence-related proteins, with putative senescent cells of old mice having higher levels of p21 and GAPDH, whereas putative senescent cells of young mice had higher levels of IL-6. Overall, the analysis framework prioritizes multiple senescence-associated proteins to characterize putative senescent cells sourced from tissue made of different cell types.
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Affiliation(s)
- Yijia Li
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Nameera Baig
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, USA
| | - Daniel Roncancio
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, USA
| | - Kris Elbein
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, USA
| | - Dawn Lowe
- Division of Rehabilitation Science, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Michael Kyba
- Lillehei Heart Institute and Department of Pediatrics, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Edgar A Arriaga
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, USA
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13
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Rampazzo Morelli N, Pipella J, Thompson PJ. Establishing evidence for immune surveillance of β-cell senescence. Trends Endocrinol Metab 2024; 35:576-585. [PMID: 38307810 DOI: 10.1016/j.tem.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/13/2024] [Accepted: 01/15/2024] [Indexed: 02/04/2024]
Abstract
Cellular senescence is a programmed state of cell cycle arrest that involves a complex immunogenic secretome, eliciting immune surveillance and senescent cell clearance. Recent work has shown that a subpopulation of pancreatic β-cells becomes senescent in the context of diabetes; however, it is not known whether these cells are normally subject to immune surveillance. In this opinion article, we advance the hypothesis that immune surveillance of β-cells undergoing a senescence stress response normally limits their accumulation during aging and that the breakdown of these mechanisms is a driver of senescent β-cell accumulation in diabetes. Elucidation and therapeutic activation of immune surveillance mechanisms in the pancreas holds promise for the improvement of approaches to target stressed senescent β-cells in the treatment of diabetes.
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Affiliation(s)
- Nayara Rampazzo Morelli
- Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Jasmine Pipella
- Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - Peter J Thompson
- Diabetes Research Envisioned and Accomplished in Manitoba (DREAM) Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.
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14
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Salminen A. Inhibitory immune checkpoints suppress the surveillance of senescent cells promoting their accumulation with aging and in age-related diseases. Biogerontology 2024:10.1007/s10522-024-10114-w. [PMID: 38954358 DOI: 10.1007/s10522-024-10114-w] [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: 04/19/2024] [Accepted: 06/18/2024] [Indexed: 07/04/2024]
Abstract
The accumulation of pro-inflammatory senescent cells within tissues is a common hallmark of the aging process and many age-related diseases. This modification has been called the senescence-associated secretory phenotype (SASP) and observed in cultured cells and in cells isolated from aged tissues. Currently, there is a debate whether the accumulation of senescent cells within tissues should be attributed to increased generation of senescent cells or to a defect in their elimination from aging tissues. Emerging studies have revealed that senescent cells display an increased expression of several inhibitory immune checkpoint ligands, especially those of the programmed cell death protein-1 (PD-1) ligand-1 (PD-L1) proteins. It is known that the PD-L1 ligands, especially those of cancer cells, target the PD-1 receptor of cytotoxic CD8+ T and natural killer (NK) cells disturbing their functions, e.g., evoking a decline in their cytotoxic activity and promoting their exhaustion and even apoptosis. An increase in the level of the PD-L1 protein in senescent cells was able to suppress their immune surveillance and inhibit their elimination by cytotoxic CD8+ T and NK cells. Senescent cells are known to express ligands for several inhibitory immune checkpoint receptors, i.e., PD-1, LILRB4, NKG2A, TIM-3, and SIRPα receptors. Here, I will briefly describe those pathways and examine whether these inhibitory checkpoints could be involved in the immune evasion of senescent cells with aging and age-related diseases. It seems plausible that an enhanced inhibitory checkpoint signaling can prevent the elimination of senescent cells from tissues and thus promote the aging process.
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Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland.
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15
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Kirchner VA, Badshah JS, Kyun Hong S, Martinez O, Pruett TL, Niedernhofer LJ. Effect of Cellular Senescence in Disease Progression and Transplantation: Immune Cells and Solid Organs. Transplantation 2024; 108:1509-1523. [PMID: 37953486 PMCID: PMC11089077 DOI: 10.1097/tp.0000000000004838] [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] [Indexed: 11/14/2023]
Abstract
Aging of the world population significantly impacts healthcare globally and specifically, the field of transplantation. Together with end-organ dysfunction and prolonged immunosuppression, age increases the frequency of comorbid chronic diseases in transplant candidates and recipients, contributing to inferior outcomes. Although the frequency of death increases with age, limited use of organs from older deceased donors reflects the concerns about organ durability and inadequate function. Cellular senescence (CS) is a hallmark of aging, which occurs in response to a myriad of cellular stressors, leading to activation of signaling cascades that stably arrest cell cycle progression to prevent tumorigenesis. In aging and chronic conditions, senescent cells accumulate as the immune system's ability to clear them wanes, which is causally implicated in the progression of chronic diseases, immune dysfunction, organ damage, decreased regenerative capacity, and aging itself. The intimate interplay between senescent cells, their proinflammatory secretome, and immune cells results in a positive feedback loop, propagating chronic sterile inflammation and the spread of CS. Hence, senescent cells in organs from older donors trigger the recipient's alloimmune response, resulting in the increased risk of graft loss. Eliminating senescent cells or attenuating their inflammatory phenotype is a novel, potential therapeutic target to improve transplant outcomes and expand utilization of organs from older donors. This review focuses on the current knowledge about the impact of CS on circulating immune cells in the context of organ damage and disease progression, discusses the impact of CS on abdominal solid organs that are commonly transplanted, and reviews emerging therapies that target CS.
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Affiliation(s)
- Varvara A. Kirchner
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
| | - Joshua S. Badshah
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
| | - Suk Kyun Hong
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Olivia Martinez
- Division of Abdominal Transplantation, Department of Surgery, Stanford University, Stanford, CA
| | - Timothy L. Pruett
- Division of Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN
| | - Laura J. Niedernhofer
- Institute on the Biology of Aging and Metabolism, Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota Medical School, Minneapolis, MN
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16
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Ro DH, Cho GH, Kim JY, Min SK, Yang HR, Park HJ, Wang SY, Kim YJ, Lee MC, Bae HC, Han H. Selective targeting of dipeptidyl-peptidase 4 (DPP-4) positive senescent chondrocyte ameliorates osteoarthritis progression. Aging Cell 2024; 23:e14161. [PMID: 38556837 PMCID: PMC11258469 DOI: 10.1111/acel.14161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 03/07/2024] [Accepted: 03/13/2024] [Indexed: 04/02/2024] Open
Abstract
Senescent cells increase in many tissues with age and induce age-related pathologies, including osteoarthritis (OA). Senescent chondrocytes (SnCs) are found in OA cartilage, and the clearance of those chondrocytes prevents OA progression. However, targeting SnCs is challenging due to the absence of a senescent chondrocyte-specific marker. Therefore, we used flow cytometry to screen and select senescent chondrocyte surface markers and cross-validated with published transcriptomic data. Chondrocytes expressing dipeptidyl peptidase-4 (DPP-4), the selected senescent chondrocyte-specific marker, had multiple senescence phenotypes, such as increased senescence-associated-galactosidase, p16, p21, and senescence-associated secretory phenotype expression, and showed OA chondrocyte phenotypes. To examine the effects of DPP-4 inhibition on DPP-4+ SnCs, sitagliptin, a DPP-4 inhibitor, was treated in vitro. As a result, DPP-4 inhibition selectively eliminates DPP-4+ SnCs without affecting DPP-4- chondrocytes. To assess in vivo therapeutic efficacy of targeting DPP-4+ SnCs, three known senolytics (ABT263, 17DMAG, and metformin) and sitagliptin were comparatively verified in a DMM-induced rat OA model. Sitagliptin treatment specifically and effectively eliminated DPP-4+ SnCs, compared to the other three senolytics. Furthermore, Intra-articular sitagliptin injection to the rat OA model increased collagen type II and proteoglycan expression and physical functions and decreased cartilage destruction, subchondral bone plate thickness and MMP13 expression, leading to the amelioration of OA phenotypes. Collectively, OARSI score was lowest in the sitagliptin treatment group. Taken together, we verified DPP-4 as a surface marker for SnCs and suggested that the selective targeting of DPP-4+ chondrocytes could be a promising strategy to prevent OA progression.
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Affiliation(s)
- Du Hyun Ro
- Department of Orthopedic SurgerySeoul National University College of MedicineSeoulKorea
| | - Gun Hee Cho
- Department of Orthopedic SurgerySeoul National University College of MedicineSeoulKorea
| | - Ji Yoon Kim
- Department of Orthopedic SurgerySeoul National University College of MedicineSeoulKorea
| | - Seong Ki Min
- Laboratory for Cellular Response to Oxidative StressCell2in, Inc.SeoulKorea
| | - Ha Ru Yang
- Department of Orthopedic SurgerySeoul National University HospitalSeoulKorea
| | - Hee Jung Park
- Department of Orthopedic SurgerySeoul National University HospitalSeoulKorea
| | - Sun Young Wang
- Department of Orthopedic SurgerySeoul National University HospitalSeoulKorea
| | - You Jung Kim
- Department of Orthopedic SurgerySeoul National University HospitalSeoulKorea
| | - Myung Chul Lee
- Department of Orthopedic SurgerySeoul National University College of MedicineSeoulKorea
- Department of Orthopedic SurgerySeoul National University HospitalSeoulKorea
| | - Hyun Cheol Bae
- Department of Orthopedic SurgerySeoul National University HospitalSeoulKorea
| | - Hyuk‐Soo Han
- Department of Orthopedic SurgerySeoul National University College of MedicineSeoulKorea
- Department of Orthopedic SurgerySeoul National University HospitalSeoulKorea
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17
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Suryadevara V, Hudgins AD, Rajesh A, Pappalardo A, Karpova A, Dey AK, Hertzel A, Agudelo A, Rocha A, Soygur B, Schilling B, Carver CM, Aguayo-Mazzucato C, Baker DJ, Bernlohr DA, Jurk D, Mangarova DB, Quardokus EM, Enninga EAL, Schmidt EL, Chen F, Duncan FE, Cambuli F, Kaur G, Kuchel GA, Lee G, Daldrup-Link HE, Martini H, Phatnani H, Al-Naggar IM, Rahman I, Nie J, Passos JF, Silverstein JC, Campisi J, Wang J, Iwasaki K, Barbosa K, Metis K, Nernekli K, Niedernhofer LJ, Ding L, Wang L, Adams LC, Ruiyang L, Doolittle ML, Teneche MG, Schafer MJ, Xu M, Hajipour M, Boroumand M, Basisty N, Sloan N, Slavov N, Kuksenko O, Robson P, Gomez PT, Vasilikos P, Adams PD, Carapeto P, Zhu Q, Ramasamy R, Perez-Lorenzo R, Fan R, Dong R, Montgomery RR, Shaikh S, Vickovic S, Yin S, Kang S, Suvakov S, Khosla S, Garovic VD, Menon V, Xu Y, Song Y, Suh Y, Dou Z, Neretti N. SenNet recommendations for detecting senescent cells in different tissues. Nat Rev Mol Cell Biol 2024:10.1038/s41580-024-00738-8. [PMID: 38831121 DOI: 10.1038/s41580-024-00738-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2024] [Indexed: 06/05/2024]
Abstract
Once considered a tissue culture-specific phenomenon, cellular senescence has now been linked to various biological processes with both beneficial and detrimental roles in humans, rodents and other species. Much of our understanding of senescent cell biology still originates from tissue culture studies, where each cell in the culture is driven to an irreversible cell cycle arrest. By contrast, in tissues, these cells are relatively rare and difficult to characterize, and it is now established that fully differentiated, postmitotic cells can also acquire a senescence phenotype. The SenNet Biomarkers Working Group was formed to provide recommendations for the use of cellular senescence markers to identify and characterize senescent cells in tissues. Here, we provide recommendations for detecting senescent cells in different tissues based on a comprehensive analysis of existing literature reporting senescence markers in 14 tissues in mice and humans. We discuss some of the recent advances in detecting and characterizing cellular senescence, including molecular senescence signatures and morphological features, and the use of circulating markers. We aim for this work to be a valuable resource for both seasoned investigators in senescence-related studies and newcomers to the field.
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Affiliation(s)
- Vidyani Suryadevara
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University, School of Medicine, Stanford, CA, USA
| | - Adam D Hudgins
- Department of Obstetrics and Gynecology, Columbia University, New York, NY, USA
| | - Adarsh Rajesh
- Sanford Burnham Prebys Medical Discovery Institute, Cancer Genome and Epigenetics Program, La Jolla, CA, USA
| | | | - Alla Karpova
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Amit K Dey
- National Institute on Aging, NIH, Baltimore, MD, USA
| | - Ann Hertzel
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Anthony Agudelo
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, USA
- Center on the Biology of Aging, Brown University, Providence, RI, USA
| | - Azucena Rocha
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, USA
- Center on the Biology of Aging, Brown University, Providence, RI, USA
| | - Bikem Soygur
- The Buck Institute for Research on Aging, Novato, CA, USA
| | | | - Chase M Carver
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
| | - Cristina Aguayo-Mazzucato
- Islet Cell Biology and Regenerative Medicine, Joslin Diabetes Center, Harvard Medical School, Boston, USA
| | - Darren J Baker
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
- Department of Biochemistry and Molecular Biology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA
| | - David A Bernlohr
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Diana Jurk
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Dilyana B Mangarova
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University, School of Medicine, Stanford, CA, USA
| | - Ellen M Quardokus
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, IN, USA
| | | | - Elizabeth L Schmidt
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Feng Chen
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Francesca E Duncan
- The Buck Institute for Research on Aging, Novato, CA, USA
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | | | - Gagandeep Kaur
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - George A Kuchel
- UConn Center on Aging, University of Connecticut Health Center, Farmington, CT, USA
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - Gung Lee
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
| | - Heike E Daldrup-Link
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University, School of Medicine, Stanford, CA, USA
| | - Helene Martini
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
| | - Hemali Phatnani
- New York Genome Center, New York, NY, USA
- Department of Neurology, Columbia University Irving Medical Center, New York, NY, USA
| | - Iman M Al-Naggar
- UConn Center on Aging, University of Connecticut Health Center, Farmington, CT, USA
| | - Irfan Rahman
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Jia Nie
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - João F Passos
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
| | - Jonathan C Silverstein
- Department of Biomedical Informatics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Judith Campisi
- The Buck Institute for Research on Aging, Novato, CA, USA
| | - Julia Wang
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Kanako Iwasaki
- Islet Cell Biology and Regenerative Medicine, Joslin Diabetes Center, Harvard Medical School, Boston, USA
| | - Karina Barbosa
- Sanford Burnham Prebys Medical Discovery Institute, Cancer Genome and Epigenetics Program, La Jolla, CA, USA
| | - Kay Metis
- Department of Biomedical Informatics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Kerem Nernekli
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University, School of Medicine, Stanford, CA, USA
| | - Laura J Niedernhofer
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Li Ding
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Lichao Wang
- UConn Center on Aging, University of Connecticut Health Center, Farmington, CT, USA
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - Lisa C Adams
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University, School of Medicine, Stanford, CA, USA
| | - Liu Ruiyang
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Madison L Doolittle
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
- Division of Endocrinology, Diabetes and Metabolism, Mayo Clinic, Rochester, MN, USA
| | - Marcos G Teneche
- Sanford Burnham Prebys Medical Discovery Institute, Cancer Genome and Epigenetics Program, La Jolla, CA, USA
| | - Marissa J Schafer
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Ming Xu
- UConn Center on Aging, University of Connecticut Health Center, Farmington, CT, USA
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT, USA
| | - Mohammadjavad Hajipour
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Stanford University, School of Medicine, Stanford, CA, USA
| | | | | | - Nicholas Sloan
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Nikolai Slavov
- Center on the Biology of Aging, Brown University, Providence, RI, USA
- Department of Bioengineering, Northeastern University, Boston, MA, USA
- Department of Biology, Northeastern University, Boston, MA, USA
- Barnett Institute for Chemical and Biological Analysis, Northeastern University, Boston, MA, USA
| | - Olena Kuksenko
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Paul Robson
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
- Institute for Systems Genomics, University of Connecticut, Farmington, CT, USA
| | - Paul T Gomez
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
| | - Periklis Vasilikos
- Department of Genetics and Development, Columbia University, New York, NY, USA
| | - Peter D Adams
- Sanford Burnham Prebys Medical Discovery Institute, Cancer Genome and Epigenetics Program, La Jolla, CA, USA
| | - Priscila Carapeto
- Islet Cell Biology and Regenerative Medicine, Joslin Diabetes Center, Harvard Medical School, Boston, USA
| | - Quan Zhu
- Center for Epigenomics, University of California, San Diego, CA, USA
| | | | | | - Rong Fan
- Yale-Center for Research on Aging, Yale School of Medicine, New Haven, CT, USA
| | - Runze Dong
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Graduate Program in Biological Physics, Structure and Design, University of Washington, Seattle, WA, USA
| | - Ruth R Montgomery
- Yale-Center for Research on Aging, Yale School of Medicine, New Haven, CT, USA
| | - Sadiya Shaikh
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Sanja Vickovic
- New York Genome Center, New York, NY, USA
- Herbert Irving Institute for Cancer Dynamics, Columbia University, New York, NY, USA
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Beijer Laboratory for Gene and Neuro Research, Uppsala University, Uppsala, Sweden
| | - Shanshan Yin
- Sanford Burnham Prebys Medical Discovery Institute, Cancer Genome and Epigenetics Program, La Jolla, CA, USA
| | - Shoukai Kang
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Sonja Suvakov
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Sundeep Khosla
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Robert and Arlene Kogod Center on Aging, Rochester, MN, USA
- Division of Endocrinology, Diabetes and Metabolism, Mayo Clinic, Rochester, MN, USA
| | - Vesna D Garovic
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN, USA
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Vilas Menon
- Department of Neurology, Columbia University Irving Medical Center, New York, NY, USA
- Center for Translational and Computational Neuroimmunology, Columbia University Irving Medical Center, New York, NY, USA
| | - Yanxin Xu
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Yizhe Song
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Yousin Suh
- Department of Obstetrics and Gynecology, Columbia University, New York, NY, USA
- Department of Genetics and Development, Columbia University, New York, NY, USA
| | - Zhixun Dou
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Nicola Neretti
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, USA.
- Center on the Biology of Aging, Brown University, Providence, RI, USA.
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18
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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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19
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Salminen A, Kaarniranta K, Kauppinen A. Tissue fibroblasts are versatile immune regulators: An evaluation of their impact on the aging process. Ageing Res Rev 2024; 97:102296. [PMID: 38588867 DOI: 10.1016/j.arr.2024.102296] [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: 12/18/2023] [Revised: 03/26/2024] [Accepted: 04/03/2024] [Indexed: 04/10/2024]
Abstract
Fibroblasts are abundant stromal cells which not only control the integrity of extracellular matrix (ECM) but also act as immune regulators. It is known that the structural cells within tissues can establish an organ-specific immunity expressing many immune-related genes and closely interact with immune cells. In fact, fibroblasts can modify their immune properties to display both pro-inflammatory and immunosuppressive activities in a context-dependent manner. After acute insults, fibroblasts promote tissue inflammation although they concurrently recruit immunosuppressive cells to enhance the resolution of inflammation. In chronic pathological states, tissue fibroblasts, especially senescent fibroblasts, can display many pro-inflammatory and immunosuppressive properties and stimulate the activities of different immunosuppressive cells. In return, immunosuppressive cells, such as M2 macrophages and myeloid-derived suppressor cells (MDSC), evoke an excessive conversion of fibroblasts into myofibroblasts, thus aggravating the severity of tissue fibrosis. Single-cell transcriptome studies on fibroblasts isolated from aged tissues have confirmed that tissue fibroblasts express many genes coding for cytokines, chemokines, and complement factors, whereas they lose some fibrogenic properties. The versatile immune properties of fibroblasts and their close cooperation with immune cells indicate that tissue fibroblasts have a crucial role in the aging process and age-related diseases.
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Affiliation(s)
- Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, Kuopio FI-70211, Finland.
| | - Kai Kaarniranta
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, Kuopio FI-70211, Finland; Department of Ophthalmology, Kuopio University Hospital, P.O. Box 100, KYS FI-70029, Finland
| | - Anu Kauppinen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, Kuopio FI-70211, Finland
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20
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Rani A, Bean L, Budamagunta V, Kumar A, Foster TC. Failure of senolytic treatment to prevent cognitive decline in a female rodent model of aging. Front Aging Neurosci 2024; 16:1384554. [PMID: 38813533 PMCID: PMC11133672 DOI: 10.3389/fnagi.2024.1384554] [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: 02/09/2024] [Accepted: 05/01/2024] [Indexed: 05/31/2024] Open
Abstract
There are sex differences in vulnerability and resilience to the stressors of aging and subsequent age-related cognitive decline. Cellular senescence occurs as a response to damaging or stress-inducing stimuli. The response includes a state of irreversible growth arrest, the development of a senescence-associated secretory phenotype, and the release of pro-inflammatory cytokines associated with aging and age-related diseases. Senolytics are compounds designed to eliminate senescent cells. Our recent work indicates that senolytic treatment preserves cognitive function in aging male F344 rats. The current study examined the effect of senolytic treatment on cognitive function in aging female rats. Female F344 rats (12 months) were treated with dasatinib (1.2 mg/kg) + quercetin (12 mg/kg) or ABT-263 (12 mg/kg) or vehicle for 7 months. Examination of the estrus cycle indicated that females had undergone estropause during treatment. Senolytic treatment may have increased sex differences in behavioral stress responsivity, particularly for the initial training on the cued version of the watermaze. However, pre-training on the cue task reduced stress responsivity for subsequent spatial training and all groups learned the spatial discrimination. In contrast to preserved memory observed in senolytic-treated males, all older females exhibited impaired episodic memory relative to young (6-month) females. We suggest that the senolytic treatment may not have been able to compensate for the loss of estradiol, which can act on aging mechanisms for anxiety and memory independent of cellular senescence.
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Affiliation(s)
- Asha Rani
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, United States
| | - Linda Bean
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, United States
| | - Vivekananda Budamagunta
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, United States
- Genetics and Genomics Graduate Program, Genetics Institute, University of Florida, Gainesville, FL, United States
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, United States
| | - Ashok Kumar
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, United States
| | - Thomas C. Foster
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, United States
- Genetics and Genomics Graduate Program, Genetics Institute, University of Florida, Gainesville, FL, United States
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21
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van der Linden J, Stefens SJM, Heredia‐Genestar JM, Ridwan Y, Brandt RMC, van Vliet N, de Beer I, van Thiel BS, Steen H, Cheng C, Roks AJM, Danser AHJ, Essers J, van der Pluijm I. Ercc1 DNA repair deficiency results in vascular aging characterized by VSMC phenotype switching, ECM remodeling, and an increased stress response. Aging Cell 2024; 23:e14126. [PMID: 38451018 PMCID: PMC11113264 DOI: 10.1111/acel.14126] [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] [Accepted: 02/05/2024] [Indexed: 03/08/2024] Open
Abstract
Cardiovascular diseases are the number one cause of death globally. The most important determinant of cardiovascular health is a person's age. Aging results in structural changes and functional decline of the cardiovascular system. DNA damage is an important contributor to the aging process, and mice with a DNA repair defect caused by Ercc1 deficiency display hypertension, vascular stiffening, and loss of vasomotor control. To determine the underlying cause, we compared important hallmarks of vascular aging in aortas of both Ercc1Δ/- and age-matched wildtype mice. Additionally, we investigated vascular aging in 104 week old wildtype mice. Ercc1Δ/- aortas displayed arterial thickening, a loss of cells, and a discontinuous endothelial layer. Aortas of 24 week old Ercc1Δ/- mice showed phenotypical switching of vascular smooth muscle cells (VSMCs), characterized by a decrease in contractile markers and a decrease in synthetic markers at the RNA level. As well as an increase in osteogenic markers, microcalcification, and an increase in markers for damage induced stress response. This suggests that Ercc1Δ/- VSMCs undergo a stress-induced contractile-to-osteogenic phenotype switch. Ercc1Δ/- aortas showed increased MMP activity, elastin fragmentation, and proteoglycan deposition, characteristic of vascular aging and indicative of age-related extracellular matrix remodeling. The 104 week old WT mice showed loss of cells, VSMC dedifferentiation, and senescence. In conclusion, Ercc1Δ/- aortas rapidly display many characteristics of vascular aging, and thus the Ercc1Δ/- mouse is an excellent model to evaluate drugs that prevent vascular aging in a short time span at the functional, histological, and cellular level.
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Affiliation(s)
- Janette van der Linden
- Division of Vascular Medicine and Pharmacology, Department of Internal MedicineErasmus University Medical CenterRotterdamThe Netherlands
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
| | - Sanne J. M. Stefens
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
| | - José María Heredia‐Genestar
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
| | - Yanto Ridwan
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
- AMIE Core facilityErasmus University Medical CenterRotterdamThe Netherlands
| | - Renata M. C. Brandt
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
| | - Nicole van Vliet
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
| | - Isa de Beer
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
| | - Bibi S. van Thiel
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
| | | | - Caroline Cheng
- Division of Experimental Cardiology, Department of CardiologyMC UtrechtUtrechtThe Netherlands
- Division of Internal Medicine and Dermatology, Department of Nephrology and HypertensionMC UtrechtUtrechtThe Netherlands
| | - Anton J. M. Roks
- Division of Vascular Medicine and Pharmacology, Department of Internal MedicineErasmus University Medical CenterRotterdamThe Netherlands
| | - A. H. Jan Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal MedicineErasmus University Medical CenterRotterdamThe Netherlands
| | - Jeroen Essers
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
- Department of Vascular SurgeryCardiovascular Institute, Erasmus University Medical CenterRotterdamThe Netherlands
- Department of RadiotherapyErasmus University Medical CenterRotterdamThe Netherlands
| | - Ingrid van der Pluijm
- Department of Molecular Genetics, Cancer Genomics CenterErasmus University Medical CenterRotterdamThe Netherlands
- Department of Vascular SurgeryCardiovascular Institute, Erasmus University Medical CenterRotterdamThe Netherlands
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22
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Lopez-Lee C, Torres ERS, Carling G, Gan L. Mechanisms of sex differences in Alzheimer's disease. Neuron 2024; 112:1208-1221. [PMID: 38402606 PMCID: PMC11076015 DOI: 10.1016/j.neuron.2024.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/01/2023] [Accepted: 01/23/2024] [Indexed: 02/27/2024]
Abstract
Alzheimer's disease (AD) and the mechanisms underlying its etiology and progression are complex and multifactorial. The higher AD risk in women may serve as a clue to better understand these complicated processes. In this review, we examine aspects of AD that demonstrate sex-dependent effects and delve into the potential biological mechanisms responsible, compiling findings from advanced technologies such as single-cell RNA sequencing, metabolomics, and multi-omics analyses. We review evidence that sex hormones and sex chromosomes interact with various disease mechanisms during aging, encompassing inflammation, metabolism, and autophagy, leading to unique characteristics in disease progression between men and women.
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Affiliation(s)
- Chloe Lopez-Lee
- Helen and Robert Appel Alzheimer's Disease Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY, USA; Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY, USA
| | - Eileen Ruth S Torres
- Helen and Robert Appel Alzheimer's Disease Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Gillian Carling
- Helen and Robert Appel Alzheimer's Disease Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY, USA; Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY, USA
| | - Li Gan
- Helen and Robert Appel Alzheimer's Disease Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY, USA; Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY, USA.
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23
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Abdelgawad IY, George B, Grant MKO, Huang Y, Shan Y, Huang RS, Zordoky BN. Sex-related differences in delayed doxorubicin-induced cardiac dysfunction in C57BL/6 mice. Arch Toxicol 2024; 98:1191-1208. [PMID: 38244039 DOI: 10.1007/s00204-023-03678-y] [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: 11/10/2023] [Accepted: 12/20/2023] [Indexed: 01/22/2024]
Abstract
Cancer survivors may experience long-term cardiovascular complications due to chemotherapeutic drugs such as doxorubicin (DOX). The exact mechanism of delayed DOX-induced cardiotoxicity has not been fully elucidated. Sex is an important risk factor for DOX-induced cardiotoxicity. In the current study, we identified sex differences in delayed DOX-induced cardiotoxicity and determined the underlying molecular determinants of the observed sexual dimorphism. Five-week-old male and female mice were administered intraperitoneal injections of DOX (4 mg/kg/week) or saline for 6 weeks. Echocardiography was performed 5 weeks after the last dose of DOX to evaluate cardiac function. Thereafter, mice were sacrificed and gene expression of markers of apoptosis, senescence, and inflammation was measured by PCR in hearts and livers. Proteomic profiling of the heart from both sexes was conducted to determine differentially expressed proteins (DEPs). Only DOX-treated male, but not female, mice demonstrated cardiac dysfunction, cardiac atrophy, and upregulated cardiac expression of Nppb and Myh7. No sex-related differences were observed in DOX-induced expression of most apoptotic, senescence, and pro-inflammatory markers. However, the gene expression of Trp53 was significantly reduced in hearts of DOX-treated female mice only. The anti-inflammatory marker Il-10 was significantly reduced in hearts of DOX-treated male mice only, while the pro-inflammatory marker Il-1α was significantly reduced in livers of DOX-treated female mice only. Gene expression of Tnf-α was reduced in hearts of both DOX-treated male and female mice. Proteomic analysis identified several DEPs after DOX treatment in a sex-specific manner, including anti-inflammatory acute phase proteins. This is the first study to assess sex-specific proteomic changes in a mouse model of delayed DOX-induced cardiotoxicity. Our proteomic analysis identified several sexually dimorphic DEPs, many of which are associated with the anti-inflammatory marker Il-10.
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Affiliation(s)
- Ibrahim Y Abdelgawad
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN, 55455, USA
| | - Benu George
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN, 55455, USA
| | - Marianne K O Grant
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN, 55455, USA
| | - Yingbo Huang
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN, 55455, USA
| | - Yuting Shan
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN, 55455, USA
| | - R Stephanie Huang
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN, 55455, USA
| | - Beshay N Zordoky
- Department of Experimental and Clinical Pharmacology, University of Minnesota College of Pharmacy, Minneapolis, MN, 55455, USA.
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24
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Hill RJ, Bona N, Smink J, Webb HK, Crisp A, Garaycoechea JI, Crossan GP. p53 regulates diverse tissue-specific outcomes to endogenous DNA damage in mice. Nat Commun 2024; 15:2518. [PMID: 38514641 PMCID: PMC10957910 DOI: 10.1038/s41467-024-46844-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 03/08/2024] [Indexed: 03/23/2024] Open
Abstract
DNA repair deficiency can lead to segmental phenotypes in humans and mice, in which certain tissues lose homeostasis while others remain seemingly unaffected. This may be due to different tissues facing varying levels of damage or having different reliance on specific DNA repair pathways. However, we find that the cellular response to DNA damage determines different tissue-specific outcomes. Here, we use a mouse model of the human XPF-ERCC1 progeroid syndrome (XFE) caused by loss of DNA repair. We find that p53, a central regulator of the cellular response to DNA damage, regulates tissue dysfunction in Ercc1-/- mice in different ways. We show that ablation of p53 rescues the loss of hematopoietic stem cells, and has no effect on kidney, germ cell or brain dysfunction, but exacerbates liver pathology and polyploidisation. Mechanistically, we find that p53 ablation led to the loss of cell-cycle regulation in the liver, with reduced p21 expression. Eventually, p16/Cdkn2a expression is induced, serving as a fail-safe brake to proliferation in the absence of the p53-p21 axis. Taken together, our data show that distinct and tissue-specific functions of p53, in response to DNA damage, play a crucial role in regulating tissue-specific phenotypes.
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Affiliation(s)
- Ross J Hill
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, UK
| | - Nazareno Bona
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, UK
| | - Job Smink
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW), Utrecht, the Netherlands
| | - Hannah K Webb
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, UK
| | - Alastair Crisp
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, UK
| | - Juan I Garaycoechea
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW), Utrecht, the Netherlands.
| | - Gerry P Crossan
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Francis Crick Avenue, Cambridge, UK.
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25
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Bramwell LR, Frankum R, Harries LW. Repurposing Drugs for Senotherapeutic Effect: Potential Senomorphic Effects of Female Synthetic Hormones. Cells 2024; 13:517. [PMID: 38534362 DOI: 10.3390/cells13060517] [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: 01/26/2024] [Revised: 02/26/2024] [Accepted: 03/11/2024] [Indexed: 03/28/2024] Open
Abstract
Repurposing previously approved drugs may fast track the route to the clinic for potential senotherapeutics and improves the inefficiency of the clinical drug development pipeline. We performed a repurposing screen of 240 clinically approved molecules in human primary dermal fibroblasts for their effects on CDKN2A expression. Molecules demonstrating effects on CDKN2A expression underwent secondary screening for senescence-associated beta galactosidase (SAB) activity, based on effect size, direction, and/or molecule identity. Selected molecules then underwent a more detailed assessment of senescence phenotypes including proliferation, apoptosis, DNA damage, senescence-associated secretory phenotype (SASP) expression, and regulators of alternative splicing. A selection of the molecules demonstrating effects on senescence were then used in a new bioinformatic structure-function screen to identify common structural motifs. In total, 90 molecules displayed altered CDKN2A expression at one or other dose, of which 15 also displayed effects on SAB positivity in primary human dermal fibroblasts. Of these, 3 were associated with increased SAB activity, and 11 with reduced activity. The female synthetic sex hormones-diethylstilboestrol, ethynyl estradiol and levonorgestrel-were all associated with a reduction in aspects of the senescence phenotype in male cells, with no effects visible in female cells. Finally, we identified that the 30 compounds that decreased CDKN2A activity the most had a common substructure linked to this function. Our results suggest that several drugs licensed for other indications may warrant exploration as future senotherapies, but that different donors and potentially different sexes may respond differently to senotherapeutic compounds. This underlines the importance of considering donor-related characteristics when designing drug screening platforms.
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Affiliation(s)
- Laura R Bramwell
- RNA-Mediated Mechanisms of Disease Group, Department of Clinical and Biomedical Sciences (Medical School), Faculty of Health and Life Sciences, University of Exeter, Exeter EX2 5DW, UK
| | - Ryan Frankum
- RNA-Mediated Mechanisms of Disease Group, Department of Clinical and Biomedical Sciences (Medical School), Faculty of Health and Life Sciences, University of Exeter, Exeter EX2 5DW, UK
| | - Lorna W Harries
- RNA-Mediated Mechanisms of Disease Group, Department of Clinical and Biomedical Sciences (Medical School), Faculty of Health and Life Sciences, University of Exeter, Exeter EX2 5DW, UK
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26
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Mahoney SA, Venkatasubramanian R, Darrah MA, Ludwig KR, VanDongen NS, Greenberg NT, Longtine AG, Hutton DA, Brunt VE, Campisi J, Melov S, Seals DR, Rossman MJ, Clayton ZS. Intermittent supplementation with fisetin improves arterial function in old mice by decreasing cellular senescence. Aging Cell 2024; 23:e14060. [PMID: 38062873 PMCID: PMC10928570 DOI: 10.1111/acel.14060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 11/14/2023] [Accepted: 11/20/2023] [Indexed: 01/17/2024] Open
Abstract
Cellular senescence and the senescence-associated secretory phenotype (SASP) contribute to age-related arterial dysfunction, in part, by promoting oxidative stress and inflammation, which reduce the bioavailability of the vasodilatory molecule nitric oxide (NO). In the present study, we assessed the efficacy of fisetin, a natural compound, as a senolytic to reduce vascular cell senescence and SASP factors and improve arterial function in old mice. We found that fisetin decreased cellular senescence in human endothelial cell culture. In old mice, vascular cell senescence and SASP-related inflammation were lower 1 week after the final dose of oral intermittent (1 week on-2 weeks off-1 weeks on dosing) fisetin supplementation. Old fisetin-supplemented mice had higher endothelial function. Leveraging old p16-3MR mice, a transgenic model allowing genetic clearance of p16INK4A -positive senescent cells, we found that ex vivo removal of senescent cells from arteries isolated from vehicle- but not fisetin-treated mice increased endothelium-dependent dilation, demonstrating that fisetin improved endothelial function through senolysis. Enhanced endothelial function with fisetin was mediated by increased NO bioavailability and reduced cellular- and mitochondrial-related oxidative stress. Arterial stiffness was lower in fisetin-treated mice. Ex vivo genetic senolysis in aorta rings from p16-3MR mice did not further reduce mechanical wall stiffness in fisetin-treated mice, demonstrating lower arterial stiffness after fisetin was due to senolysis. Lower arterial stiffness with fisetin was accompanied by favorable arterial wall remodeling. The findings from this study identify fisetin as promising therapy for clinical translation to target excess cell senescence to treat age-related arterial dysfunction.
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Affiliation(s)
- Sophia A. Mahoney
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | | | - Mary A. Darrah
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Katelyn R. Ludwig
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Nicholas S. VanDongen
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Nathan T. Greenberg
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Abigail G. Longtine
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - David A. Hutton
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Vienna E. Brunt
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Judith Campisi
- Buck Institute for Research on AgingNovatoCaliforniaUSA
- Lawrence Berkeley National LaboratoryBerkeleyCaliforniaUSA
| | - Simon Melov
- Buck Institute for Research on AgingNovatoCaliforniaUSA
| | - Douglas R. Seals
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Matthew J. Rossman
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
| | - Zachary S. Clayton
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderColoradoUSA
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Evans DS, Young D, Tanaka T, Basisty N, Bandinelli S, Ferrucci L, Campisi J, Schilling B. Proteomic Analysis of the Senescence-Associated Secretory Phenotype: GDF-15, IGFBP-2, and Cystatin-C Are Associated With Multiple Aging Traits. J Gerontol A Biol Sci Med Sci 2024; 79:glad265. [PMID: 37982669 PMCID: PMC10876076 DOI: 10.1093/gerona/glad265] [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: 03/30/2023] [Indexed: 11/21/2023] Open
Abstract
Cellular senescence, a hallmark of aging, results in a senescence-associated secretory phenotype (SASP) with an increased production of proinflammatory cytokines, growth factors, and proteases. Evidence from nonhuman models demonstrates that SASP contributes to tissue dysfunction and pathological effects of aging. However, there are relatively few human studies on the relationship between SASP and aging-related health outcomes. Proteins from the SASP Atlas were measured in plasma using aptamer-based proteomics (SomaLogic). Regression models were used to identify SASP protein associations with aging-related traits representing multiple aspects of physiology in 1 201 participants from 2 human cohort studies (BLSA/GESTALT and InCHIANTI). Traits examined were fasting glucose, C-reactive protein, interleukin-6, alkaline phosphatase, blood urea nitrogen, albumin, red blood cell distribution width, waist circumference, systolic and diastolic blood pressure, gait speed, and grip strength. Study results were combined with a fixed-effect inverse-variance weighted meta-analysis. In the meta-analysis, 28 of 77 SASP proteins were significantly associated with age. Of the 28 age-associated SASP proteins, 18 were significantly associated with 1 or more clinical traits, and 7 SASP proteins were significantly associated with 3 or more traits. Growth/differentiation factor 15, Insulin-like growth factor-binding protein 2, and Cystatin-C showed significant associations with inflammatory markers and measures of physical function (grip strength or gait speed). These results support the relevance of SASP proteins to human aging, identify specific traits that are potentially affected by SASP, and prioritize specific SASP proteins for their utility as biomarkers of human aging.
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Affiliation(s)
- Daniel S Evans
- California Pacific Medical Center Research Institute, San Francisco, California, USA
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, USA
| | - Danielle Young
- California Pacific Medical Center Research Institute, San Francisco, California, USA
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, USA
| | - Toshiko Tanaka
- Longitudinal Studies Section, Translational Gerontology Branch, NIA, NIH, Baltimore, Maryland, USA
| | - Nathan Basisty
- Longitudinal Studies Section, Translational Gerontology Branch, NIA, NIH, Baltimore, Maryland, USA
| | | | - Luigi Ferrucci
- Longitudinal Studies Section, Translational Gerontology Branch, NIA, NIH, Baltimore, Maryland, USA
| | - Judith Campisi
- Buck Institute for Research on Aging, Novato, California, USA
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28
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Romero-Becera R, Santamans AM, Arcones AC, Sabio G. From Beats to Metabolism: the Heart at the Core of Interorgan Metabolic Cross Talk. Physiology (Bethesda) 2024; 39:98-125. [PMID: 38051123 DOI: 10.1152/physiol.00018.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/26/2023] [Accepted: 12/01/2023] [Indexed: 12/07/2023] Open
Abstract
The heart, once considered a mere blood pump, is now recognized as a multifunctional metabolic and endocrine organ. Its function is tightly regulated by various metabolic processes, at the same time it serves as an endocrine organ, secreting bioactive molecules that impact systemic metabolism. In recent years, research has shed light on the intricate interplay between the heart and other metabolic organs, such as adipose tissue, liver, and skeletal muscle. The metabolic flexibility of the heart and its ability to switch between different energy substrates play a crucial role in maintaining cardiac function and overall metabolic homeostasis. Gaining a comprehensive understanding of how metabolic disorders disrupt cardiac metabolism is crucial, as it plays a pivotal role in the development and progression of cardiac diseases. The emerging understanding of the heart as a metabolic and endocrine organ highlights its essential contribution to whole body metabolic regulation and offers new insights into the pathogenesis of metabolic diseases, such as obesity, diabetes, and cardiovascular disorders. In this review, we provide an in-depth exploration of the heart's metabolic and endocrine functions, emphasizing its role in systemic metabolism and the interplay between the heart and other metabolic organs. Furthermore, emerging evidence suggests a correlation between heart disease and other conditions such as aging and cancer, indicating that the metabolic dysfunction observed in these conditions may share common underlying mechanisms. By unraveling the complex mechanisms underlying cardiac metabolism, we aim to contribute to the development of novel therapeutic strategies for metabolic diseases and improve overall cardiovascular health.
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Affiliation(s)
| | | | - Alba C Arcones
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Guadalupe Sabio
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
- Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
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29
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Fielding RA, Atkinson EJ, Aversa Z, White TA, Heeren AA, Mielke MM, Cummings SR, Pahor M, Leeuwenburgh C, LeBrasseur NK. Biomarkers of Cellular Senescence Predict the Onset of Mobility Disability and Are Reduced by Physical Activity in Older Adults. J Gerontol A Biol Sci Med Sci 2024; 79:glad257. [PMID: 37948612 PMCID: PMC10851672 DOI: 10.1093/gerona/glad257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Indexed: 11/12/2023] Open
Abstract
Studies in mice and cross-sectional studies in humans support the premise that cellular senescence is a contributing mechanism to age-associated deficits in physical function. We tested the hypotheses that circulating proteins secreted by senescent cells are (i) associated with the incidence of major mobility disability (MMD), the development of persistent mobility disability (PMMD), and decrements in physical functioning in older adults, and (ii) influenced by physical activity (PA). Using samples and data obtained longitudinally from the Lifestyle Interventions in Elders Study clinical trial, we measured a panel of 27 proteins secreted by senescent cells. Among 1 377 women and men randomized to either a structured PA intervention or a healthy aging (HA) intervention, we observed significant associations between several senescence biomarkers, most distinctly vascular endothelial growth factor A (VEGFA), tumor necrosis factor receptor 1 (TNFR1), and matrix metallopeptidase 7 (MMP7), and the onset of both MMD and PMMD. Moreover, VEGFA, GDF15, osteopontin, and other senescence biomarkers were associated with reductions in short physical performance battery scores. The change in senescence biomarkers did not differ between PA and HA participants. In the whole cohort, higher levels of PA were associated with significantly greater reductions in 10 senescence-related proteins at 12 and/or 24 months. These data reinforce cellular senescence as a contributing mechanism of age-associated functional decline and the potential for PA to attenuate this hallmark of aging. Clinical Trials Registration Number: NCT01072500.
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Affiliation(s)
- Roger A Fielding
- Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts, USA
| | - Elizabeth J Atkinson
- Department of Quantitative Health Sciences, Mayo Clinic, Rochester, Minnesota, USA
| | - Zaira Aversa
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota, USA
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota, USA
| | - Thomas A White
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota, USA
| | - Amanda A Heeren
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota, USA
| | - Michelle M Mielke
- Department of Epidemiology and Prevention, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Steven R Cummings
- Departments of Medicine, Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California, USA
- Research Institute, California Pacific Medical Center, San Francisco, California, USA
| | - Marco Pahor
- Institute on Aging, University of Florida, Gainesville, Florida, USA
| | | | - Nathan K LeBrasseur
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota, USA
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota, USA
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30
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de Luzy IR, Lee MK, Mobley WC, Studer L. Lessons from inducible pluripotent stem cell models on neuronal senescence in aging and neurodegeneration. NATURE AGING 2024; 4:309-318. [PMID: 38429379 DOI: 10.1038/s43587-024-00586-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/01/2024] [Indexed: 03/03/2024]
Abstract
Age remains the central risk factor for many neurodegenerative diseases including Parkinson's disease, Alzheimer's disease and amyotrophic lateral sclerosis. Although the mechanisms of aging are complex, the age-related accumulation of senescent cells in neurodegeneration is well documented and their clearance can alleviate disease-related features in preclinical models. Senescence-like characteristics are observed in both neuronal and glial lineages, but their relative contribution to aging and neurodegeneration remains unclear. Human pluripotent stem cell-derived neurons provide an experimental model system to induce neuronal senescence. However, the extensive heterogeneity in the profile of senescent neurons and the methods to assess senescence remain major challenges. Here, we review the evidence of cellular senescence in neuronal aging and disease, discuss human pluripotent stem cell-based model systems used to investigate neuronal senescence and propose a panel of cellular and molecular hallmarks to characterize senescent neurons. Understanding the role of neuronal senescence may yield novel therapeutic opportunities in neurodegenerative disease.
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Affiliation(s)
- Isabelle R de Luzy
- The Center for Stem Cell Biology and Developmental Biology Program, Sloan-Kettering Institute for Cancer Research, New York, NY, USA.
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA.
| | - Michael K Lee
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA
- Institute for Translational Neuroscience, University of Minnesota, Minneapolis, MN, USA
| | - William C Mobley
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Department of Neurosciences, University of California, San Diego, San Diego, CA, USA
| | - Lorenz Studer
- The Center for Stem Cell Biology and Developmental Biology Program, Sloan-Kettering Institute for Cancer Research, New York, NY, USA.
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA.
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31
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Guan L, Eisenmenger A, Crasta KC, Sandalova E, Maier AB. Therapeutic effect of dietary ingredients on cellular senescence in animals and humans: A systematic review. Ageing Res Rev 2024; 95:102238. [PMID: 38382678 DOI: 10.1016/j.arr.2024.102238] [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: 10/12/2023] [Revised: 01/12/2024] [Accepted: 02/16/2024] [Indexed: 02/23/2024]
Abstract
BACKGROUND Cellular senescence has been regarded as a therapeutic target for ageing and age-related diseases. Several senotherapeutic agents have been proposed, including compounds derived from natural products which hold the translational potential to promote healthy ageing. This systematic review examined the association of dietary ingredients with cellular senescence in animals and humans, with an intent to identify dietary ingredients with senotherapeutic potential. METHODS This systematic review was registered at PROSPERO International prospective register of systematic reviews (Reg #: CRD42022338885). The databases PubMed and Embase were systematically searched for key terms related to cellular senescence, senescence markers, diets, nutrients and bioactive compounds. Intervention and observational studies on human and animals investigating the effects of dietary ingredients via oral administration on cellular senescence load were included. The SYRCLE's risk of bias tool and Cochrane risk of bias tool v2.0 were used to assess the risk of bias for animal and human studies respectively. RESULTS Out of 5707 identified articles, 83 articles consisting of 78 animal studies and 5 human studies aimed to reduce cellular senescence load using dietary ingredients. In animal studies, the most-frequently used senescence model was normative ageing (26 studies), followed by D-galactose-induced models (17 studies). Resveratrol (8 studies), vitamin E (4 studies) and soy protein isolate (3 studies) showed positive effects on reducing the level of senescence markers such as p53, p21, p16 and senescence-associated ß-galactosidase in various tissues of physiological systems. In three out of five human studies, ginsenoside Rg1 had no positive effect on reducing senescence in muscle tissues after exercise. The risk of bias for both animal and human studies was largely unclear. CONCLUSION Resveratrol, vitamin E and soy protein isolate are promising senotherapeutics studied in animal models. Studies testing dietary ingredients with senotherapeutic potential in humans are limited and translation is highly warranted.
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Affiliation(s)
- Lihuan Guan
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, @AgeSingapore, National University Health System, Singapore
| | - Anna Eisenmenger
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, @AgeSingapore, National University Health System, Singapore
| | - Karen C Crasta
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, @AgeSingapore, National University Health System, Singapore; Department of Physiology, National University of Singapore, Singapore; NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Agency for Science, Technology & Research (A⁎STAR), Institute of Molecular and Cell Biology (IMCB), Singapore
| | - Elena Sandalova
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, @AgeSingapore, National University Health System, Singapore
| | - Andrea B Maier
- Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Centre for Healthy Longevity, @AgeSingapore, National University Health System, Singapore; Department of Human Movement Sciences, @AgeAmsterdam, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, the Netherlands.
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32
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Sharma R. Exploring the emerging bidirectional association between inflamm-aging and cellular senescence in organismal aging and disease. Cell Biochem Funct 2024; 42:e3970. [PMID: 38456500 DOI: 10.1002/cbf.3970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/15/2024] [Accepted: 02/27/2024] [Indexed: 03/09/2024]
Abstract
There is strong evidence that most individuals in the elderly population are characterized by inflamm-aging which refers to a subtle increase in the systemic pro-inflammatory environment and impaired innate immune activation. Although a variety of distinct factors are associated with the progression of inflamm-aging, emerging research is demonstrating a dynamic relationship between the processes of cellular senescence and inflamm-aging. Cellular senescence is a recognized factor governing organismal aging, and through a characteristic secretome, accumulating senescent cells can induce and augment a pro-inflammatory tissue environment that provides a rationale for immune system-independent activation of inflamm-aging and associated diseases. There is also accumulating evidence that inflamm-aging or its components can directly accelerate the development of senescent cells and ultimately senescent cell burden in tissues in a likely vicious inflammatory loop. The present review is intended to describe the emerging senescence-based molecular etiology of inflamm-aging as well as the dynamic reciprocal interactions between inflamm-aging and cellular senescence. Therapeutic interventions concurrently targeting cellular senescence and inflamm-aging are discussed and limitations as well as research opportunities have been deliberated. An effort has been made to provide a rationale for integrating inflamm-aging with cellular senescence both as an underlying cause and therapeutic target for further studies.
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Affiliation(s)
- Rohit Sharma
- Nutrigerontology Laboratory, Faculty of Applied Sciences and Biotechnology, Shoolini University, Solan, India
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33
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Aversa Z, White TA, Heeren AA, Hulshizer CA, Saul D, Zhang X, Molina AJA, Redman LM, Martin CK, Racette SB, Huffman KM, Bhapkar M, Khosla S, Das SK, Fielding RA, Atkinson EJ, LeBrasseur NK. Calorie restriction reduces biomarkers of cellular senescence in humans. Aging Cell 2024; 23:e14038. [PMID: 37961856 PMCID: PMC10861196 DOI: 10.1111/acel.14038] [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: 10/02/2023] [Revised: 10/19/2023] [Accepted: 10/22/2023] [Indexed: 11/15/2023] Open
Abstract
Calorie restriction (CR) with adequate nutrient intake is a potential geroprotective intervention. To advance this concept in humans, we tested the hypothesis that moderate CR in healthy young-to-middle-aged individuals would reduce circulating biomarkers of cellular senescence, a fundamental mechanism of aging and aging-related conditions. Using plasma specimens from the Comprehensive Assessment of Long-term Effects of Reducing Intake of Energy (CALERIE™) phase 2 study, we found that CR significantly reduced the concentrations of several senescence biomarkers at 12 and 24 months compared to an ad libitum diet. Using machine learning, changes in biomarker concentrations emerged as important predictors of the change in HOMA-IR and insulin sensitivity index at 12 and 24 months, and the change in resting metabolic rate residual at 12 months. Finally, using adipose tissue RNA-sequencing data from a subset of participants, we observed a significant reduction in a senescence-focused gene set in response to CR at both 12 and 24 months compared to baseline. Our results advance the understanding of the effects of CR in humans and further support a link between cellular senescence and metabolic health.
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Affiliation(s)
- Zaira Aversa
- Robert and Arlene Kogod Center on Aging, Mayo ClinicRochesterMinnesotaUSA
- Department of Physical Medicine and RehabilitationMayo ClinicRochesterMinnesotaUSA
| | - Thomas A. White
- Robert and Arlene Kogod Center on Aging, Mayo ClinicRochesterMinnesotaUSA
| | - Amanda A. Heeren
- Robert and Arlene Kogod Center on Aging, Mayo ClinicRochesterMinnesotaUSA
| | | | - Dominik Saul
- Robert and Arlene Kogod Center on Aging, Mayo ClinicRochesterMinnesotaUSA
- Department of Trauma and Reconstructive SurgeryEberhard Karls University Tübingen, BG Trauma Center TübingenTübingenGermany
| | - Xu Zhang
- Robert and Arlene Kogod Center on Aging, Mayo ClinicRochesterMinnesotaUSA
| | | | | | - Corby K. Martin
- Pennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Susan B. Racette
- College of Health SolutionsArizona State UniversityPhoenixArizonaUSA
- Program in Physical TherapyWashington University School of MedicineSt. LouisMissouriUSA
| | - Kim M. Huffman
- Duke Clinical Research Institute and Molecular Physiology Institute, School of MedicineDurhamNorth CarolinaUSA
| | - Manjushri Bhapkar
- Duke Clinical Research Institute and Molecular Physiology Institute, School of MedicineDurhamNorth CarolinaUSA
| | - Sundeep Khosla
- Robert and Arlene Kogod Center on Aging, Mayo ClinicRochesterMinnesotaUSA
- Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Sai Krupa Das
- Energy Metabolism Team, Jean Mayer USDA Human Nutrition Research Center on AgingTufts UniversityBostonMassachusettsUSA
| | - Roger A. Fielding
- Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on AgingTufts UniversityBostonMassachusettsUSA
| | | | - Nathan K. LeBrasseur
- Robert and Arlene Kogod Center on Aging, Mayo ClinicRochesterMinnesotaUSA
- Department of Physical Medicine and RehabilitationMayo ClinicRochesterMinnesotaUSA
- Paul F. Glenn Center for the Biology of Aging at Mayo ClinicRochesterMinnesotaUSA
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Takaya K, Kishi K. Ligustilide, A Novel Senolytic Compound Isolated from the Roots of Angelica Acutiloba. Adv Biol (Weinh) 2024:e2300434. [PMID: 38183407 DOI: 10.1002/adbi.202300434] [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: 08/18/2023] [Revised: 12/14/2023] [Indexed: 01/08/2024]
Abstract
Senescent cells accumulate with age and contribute to age-related diseases and organ dysfunctions. Early evidence suggests that removal of senescent cells using senolytic drugs improves the aging phenotype in mice and may improve the health of individuals with chronic diseases. Signs of skin aging, including wrinkles, and sagging, occur largely due to the accumulation of senescent fibroblasts within the dermis; However, there is currently no skin treatment that eliminates senescent cells. In this study, human fibroblasts subjected to replicative aging and ionizing radiation exposure are used to screen plant extracts for potential senescent cell-destructive and/or senescent cell-forming activities. Angelica acutiloba-a traditional Chinese herbal medicine-selectively kills senescent cells without affecting the proliferating cells. Among the major components of this herb, ligustilide shows promising senescent cell-destructive properties, and selectively eliminates senescent cells by inducing an apoptosis. Moreover, ligustilide markedly inhibits senescence-associated secretory phenotypes. Administration of ligustilide to mouse skin eliminates senescent cells and increases dermal collagen density and subcutaneous adipose tissue content; it selectively promotes death of senescent cells without affecting non-senescent cells. These results provide evidence that a natural compound-ligustilide-may exhibit therapeutic effects on the skin aging phenotype by specifically inducing apoptosis in senescent cells.
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Affiliation(s)
- Kento Takaya
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Shinjuku, Tokyo, 160-8582, Japan
| | - Kazuo Kishi
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Shinjuku, Tokyo, 160-8582, Japan
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35
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Kent SA, Miron VE. Microglia regulation of central nervous system myelin health and regeneration. Nat Rev Immunol 2024; 24:49-63. [PMID: 37452201 DOI: 10.1038/s41577-023-00907-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2023] [Indexed: 07/18/2023]
Abstract
Microglia are resident macrophages of the central nervous system that have key functions in its development, homeostasis and response to damage and infection. Although microglia have been increasingly implicated in contributing to the pathology that underpins neurological dysfunction and disease, they also have crucial roles in neurological homeostasis and regeneration. This includes regulation of the maintenance and regeneration of myelin, the membrane that surrounds neuronal axons, which is required for axonal health and function. Myelin is damaged with normal ageing and in several neurodegenerative diseases, such as multiple sclerosis and Alzheimer disease. Given the lack of approved therapies targeting myelin maintenance or regeneration, it is imperative to understand the mechanisms by which microglia support and restore myelin health to identify potential therapeutic approaches. However, the mechanisms by which microglia regulate myelin loss or integrity are still being uncovered. In this Review, we discuss recent work that reveals the changes in white matter with ageing and neurodegenerative disease, how this relates to microglia dynamics during myelin damage and regeneration, and factors that influence the regenerative functions of microglia.
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Affiliation(s)
- Sarah A Kent
- UK Dementia Research Institute at The University of Edinburgh, Edinburgh, UK
- Centre for Discovery Brain Sciences, Chancellor's Building, The University of Edinburgh, Edinburgh, UK
| | - Veronique E Miron
- UK Dementia Research Institute at The University of Edinburgh, Edinburgh, UK.
- Centre for Discovery Brain Sciences, Chancellor's Building, The University of Edinburgh, Edinburgh, UK.
- Barlo Multiple Sclerosis Centre, St Michael's Hospital, Toronto, Ontario, Canada.
- Keenan Research Centre for Biomedical Science, St Michael's Hospital, Toronto, Ontario, Canada.
- Department of Immunology, The University of Toronto, Toronto, Ontario, Canada.
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36
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Veloso Pereira BM, Zeng Y, Maggiore JC, Schweickart RA, Eng DG, Kaverina N, McKinzie SR, Chang A, Loretz CJ, Thieme K, Hukriede NA, Pippin JW, Wessely O, Shankland SJ. Podocyte injury at young age causes premature senescence and worsens glomerular aging. Am J Physiol Renal Physiol 2024; 326:F120-F134. [PMID: 37855038 PMCID: PMC11198990 DOI: 10.1152/ajprenal.00261.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/10/2023] [Accepted: 10/10/2023] [Indexed: 10/20/2023] Open
Abstract
As life expectancy continues to rise, age-related diseases are becoming more prevalent. For example, proteinuric glomerular diseases typified by podocyte injury have worse outcomes in the elderly compared with young patients. However, the reasons are not well understood. We hypothesized that injury to nonaged podocytes induces senescence, which in turn augments their aging processes. In primary cultured human podocytes, injury induced by a cytopathic antipodocyte antibody, adriamycin, or puromycin aminonucleoside increased the senescence-related genes CDKN2A (p16INK4a/p14ARF), CDKN2D (p19INK4d), and CDKN1A (p21). Podocyte injury in human kidney organoids was accompanied by increased expression of CDKN2A, CDKN2D, and CDKN1A. In young mice, experimental focal segmental glomerulosclerosis (FSGS) induced by adriamycin and antipodocyte antibody increased the glomerular expression of p16, p21, and senescence-associated β-galactosidase (SA-β-gal). To assess the long-term effects of early podocyte injury-induced senescence, we temporally followed young mice with experimental FSGS through adulthood (12 m of age) and middle age (18 m of age). p16 and Sudan black staining were higher at middle age in mice with earlier FSGS compared with age-matched mice that did not get FSGS when young. This was accompanied by lower podocyte density, reduced canonical podocyte protein expression, and increased glomerular scarring. These results are consistent with injury-induced senescence in young podocytes, leading to increased senescence of podocytes by middle age accompanied by lower podocyte lifespan and health span.NEW & NOTEWORTHY Glomerular function is decreased by aging. However, little is known about the molecular mechanisms involved in age-related glomerular changes and which factors could contribute to a worse glomerular aging process. Here, we reported that podocyte injury in young mice and culture podocytes induced senescence, a marker of aging, and accelerates glomerular aging when compared with healthy aging mice.
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Affiliation(s)
- Beatriz Maria Veloso Pereira
- Division of Nephrology, University of Washington, Seattle, Washington, United States
- Department of Physiology and Biophysics, University of São Paulo, São Paulo, Brazil
| | - Yuting Zeng
- Department of Chemistry, University of Washington, Seattle, Washington, United States
| | - Joseph C Maggiore
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States
| | | | - Diana G Eng
- Division of Nephrology, University of Washington, Seattle, Washington, United States
| | - Natalya Kaverina
- Division of Nephrology, University of Washington, Seattle, Washington, United States
| | - Sierra R McKinzie
- Division of Nephrology, University of Washington, Seattle, Washington, United States
| | - Anthony Chang
- Department of Pathology, University of Chicago, Chicago, Illinois, United States
| | - Carol J Loretz
- Division of Nephrology, University of Washington, Seattle, Washington, United States
| | - Karina Thieme
- Department of Physiology and Biophysics, University of São Paulo, São Paulo, Brazil
| | - Neil A Hukriede
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States
| | - Jeffrey W Pippin
- Division of Nephrology, University of Washington, Seattle, Washington, United States
| | - Oliver Wessely
- Lerner Research Institute, Cleveland Clinic Foundation, Cleveland, Ohio, United States
| | - Stuart J Shankland
- Division of Nephrology, University of Washington, Seattle, Washington, United States
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, Washington, United States
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Rex N, Melk A, Schmitt R. Cellular senescence and kidney aging. Clin Sci (Lond) 2023; 137:1805-1821. [PMID: 38126209 PMCID: PMC10739085 DOI: 10.1042/cs20230140] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 11/22/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023]
Abstract
Life expectancy is increasing worldwide, and by 2050 the proportion of the world's population over 65 years of age is estimated to surpass 1.5 billion. Kidney aging is associated with molecular and physiological changes that cause a loss of renal function and of regenerative potential. As the aging population grows, it is crucial to understand the mechanisms underlying these changes, as they increase the susceptibility to developing acute kidney injury (AKI) and chronic kidney disease (CKD). Various cellular processes and molecular pathways take part in the complex process of kidney aging. In this review, we will focus on the phenomenon of cellular senescence as one of the involved mechanisms at the crossroad of kidney aging, age-related disease, and CKD. We will highlight experimental and clinical findings about the role of cellular senescence in kidney aging and CKD. In addition, we will review challenges in senescence research and emerging therapeutic aspects. We will highlight the great potential of senolytic strategies for the elimination of harmful senescent cells to promote healthy kidney aging and to avoid age-related disease and CKD. This review aims to give insight into recent discoveries and future developments, providing a comprehensive overview of current knowledge on cellular senescence and anti-senescent therapies in the kidney field.
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Affiliation(s)
- Nikolai Rex
- Department of Nephrology and Hypertension, Medical School Hannover, Germany
| | - Anette Melk
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Medical School Hannover, Germany
| | - Roland Schmitt
- Department of Nephrology and Hypertension, Medical School Hannover, Germany
- Department of Nephrology and Hypertension, University Hospital Schleswig-Holstein, Kiel, Germany
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St. Sauver JL, Weston SA, Atkinson EJ, Mc Gree ME, Mielke MM, White TA, Heeren AA, Olson JE, Rocca WA, Palmer AK, Cummings SR, Fielding RA, Bielinski SJ, LeBrasseur NK. Biomarkers of cellular senescence and risk of death in humans. Aging Cell 2023; 22:e14006. [PMID: 37803875 PMCID: PMC10726868 DOI: 10.1111/acel.14006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 10/08/2023] Open
Abstract
A robust and heterogenous secretory phenotype is a core feature of most senescent cells. In addition to mediators of age-related pathology, components of the senescence associated secretory phenotype (SASP) have been studied as biomarkers of senescent cell burden and, in turn, biological age. Therefore, we hypothesized that circulating concentrations of candidate senescence biomarkers, including chemokines, cytokines, matrix remodeling proteins, and growth factors, could predict mortality in older adults. We assessed associations between plasma levels of 28 SASP proteins and risk of mortality over a median follow-up of 6.3 years in 1923 patients 65 years of age or older with zero or one chronic condition at baseline. Overall, the five senescence biomarkers most strongly associated with an increased risk of death were GDF15, RAGE, VEGFA, PARC, and MMP2, after adjusting for age, sex, race, and the presence of one chronic condition. The combination of biomarkers and clinical and demographic covariates exhibited a significantly higher c-statistic for risk of death (0.79, 95% confidence interval (CI): 0.76-0.82) than the covariates alone (0.70, CI: 0.67-0.74) (p < 0.001). Collectively, these findings lend further support to biomarkers of cellular senescence as informative predictors of clinically important health outcomes in older adults, including death.
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Affiliation(s)
| | - Susan A. Weston
- Department of Quantitative Health SciencesMayo ClinicRochesterMinnesotaUSA
| | | | | | - Michelle M. Mielke
- Department of Epidemiology and PreventionWake Forest University School of MedicineWinston‐SalemNorth CarolinaUSA
| | - Thomas A. White
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
| | - Amanda A. Heeren
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
| | - Janet E. Olson
- Department of Quantitative Health SciencesMayo ClinicRochesterMinnesotaUSA
| | - Walter A. Rocca
- Department of Quantitative Health SciencesMayo ClinicRochesterMinnesotaUSA
- Department of NeurologyMayo ClinicRochesterMinnesotaUSA
- Women's Health Research Center, Mayo ClinicRochesterMinnesotaUSA
| | - Allyson K. Palmer
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Division of Hospital Internal MedicineMayo ClinicRochesterMinnesotaUSA
| | - Steven R. Cummings
- Departments of Medicine, Epidemiology and BiostatisticsUniversity of California San FranciscoSan FranciscoCaliforniaUSA
- Research Institute, California Pacific Medical CenterSan FranciscoCaliforniaUSA
| | - Roger A. Fielding
- Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on AgingTufts UniversityBostonMassachusettsUSA
| | | | - Nathan K. LeBrasseur
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMinnesotaUSA
- Paul F. Glenn Center for the Biology of Aging ResearchMayo ClinicRochesterMinnesotaUSA
- Department of Physical Medicine and RehabilitationMayo ClinicRochesterMinnesotaUSA
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Jouabadi SM, Ataabadi EA, Golshiri K, Bos D, Stricker BHC, Danser AHJ, Mattace-Raso F, Roks AJM. Clinical Impact and Mechanisms of Nonatherosclerotic Vascular Aging: The New Kid to Be Blocked. Can J Cardiol 2023; 39:1839-1858. [PMID: 37495207 DOI: 10.1016/j.cjca.2023.07.022] [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: 05/05/2023] [Revised: 07/07/2023] [Accepted: 07/20/2023] [Indexed: 07/28/2023] Open
Abstract
Ischemic cardiovascular disease and stroke remain the leading cause of global morbidity and mortality. During aging, protective mechanisms in the body gradually deteriorate, resulting in functional, structural, and morphologic changes that affect the vascular system. Because atherosclerotic plaques are not always present along with these alterations, we refer to this kind of vascular aging as nonatherosclerotic vascular aging (NAVA). To maintain proper vascular function during NAVA, it is important to preserve intracellular signalling, prevent inflammation, and block the development of senescent cells. Pharmacologic interventions targeting these components are potential therapeutic approaches for NAVA, with a particular emphasis on inflammation and senescence. This review provides an overview of the pathophysiology of vascular aging and explores potential pharmacotherapies that can improve the function of aged vasculature, focusing on NAVA.
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Affiliation(s)
- Soroush Mohammadi Jouabadi
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Ehsan Ataei Ataabadi
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Keivan Golshiri
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Daniel Bos
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Bruno H C Stricker
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - A H Jan Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Francesco Mattace-Raso
- Division of Geriatric Medicine, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Anton J M Roks
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
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Green CL, Trautman ME, Chaiyakul K, Jain R, Alam YH, Babygirija R, Pak HH, Sonsalla MM, Calubag MF, Yeh CY, Bleicher A, Novak G, Liu TT, Newman S, Ricke WA, Matkowskyj KA, Ong IM, Jang C, Simcox J, Lamming DW. Dietary restriction of isoleucine increases healthspan and lifespan of genetically heterogeneous mice. Cell Metab 2023; 35:1976-1995.e6. [PMID: 37939658 PMCID: PMC10655617 DOI: 10.1016/j.cmet.2023.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/01/2023] [Accepted: 10/11/2023] [Indexed: 11/10/2023]
Abstract
Low-protein diets promote health and longevity in diverse species. Restriction of the branched-chain amino acids (BCAAs) leucine, isoleucine, and valine recapitulates many of these benefits in young C57BL/6J mice. Restriction of dietary isoleucine (IleR) is sufficient to promote metabolic health and is required for many benefits of a low-protein diet in C57BL/6J males. Here, we test the hypothesis that IleR will promote healthy aging in genetically heterogeneous adult UM-HET3 mice. We find that IleR improves metabolic health in young and old HET3 mice, promoting leanness and glycemic control in both sexes, and reprograms hepatic metabolism in a sex-specific manner. IleR reduces frailty and extends the lifespan of male and female mice, but to a greater degree in males. Our results demonstrate that IleR increases healthspan and longevity in genetically diverse mice and suggests that IleR, or pharmaceuticals that mimic this effect, may have potential as a geroprotective intervention.
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Affiliation(s)
- Cara L Green
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Michaela E Trautman
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Krittisak Chaiyakul
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Raghav Jain
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Integrated Program in Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Yasmine H Alam
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Reji Babygirija
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Heidi H Pak
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Michelle M Sonsalla
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Comparative Biomedical Sciences Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Mariah F Calubag
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Chung-Yang Yeh
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Anneliese Bleicher
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Grace Novak
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Teresa T Liu
- George M. O'Brien Center of Research Excellence, Department of Urology, University of Wisconsin, Madison, WI 93705, USA
| | - Sarah Newman
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA
| | - Will A Ricke
- George M. O'Brien Center of Research Excellence, Department of Urology, University of Wisconsin, Madison, WI 93705, USA
| | - Kristina A Matkowskyj
- William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI, USA; University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA
| | - Irene M Ong
- Department of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI 53705, USA; University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA; Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Cholsoon Jang
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA 92697, USA
| | - Judith Simcox
- Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Integrated Program in Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA; Howard Hughes Medical Institute, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Dudley W Lamming
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital, Madison, WI 53705, USA; Nutrition and Metabolism Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA; Graduate Program in Cellular and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA; Comparative Biomedical Sciences Graduate Program, University of Wisconsin-Madison, Madison, WI 53706, USA; University of Wisconsin Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA.
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Mahoney SA, Dey AK, Basisty N, Herman AB. Identification and functional analysis of senescent cells in the cardiovascular system using omics approaches. Am J Physiol Heart Circ Physiol 2023; 325:H1039-H1058. [PMID: 37656130 PMCID: PMC10908411 DOI: 10.1152/ajpheart.00352.2023] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
Cardiovascular disease (CVD) is a leading cause of morbidity and mortality worldwide, and senescent cells have emerged as key contributors to its pathogenesis. Senescent cells exhibit cell cycle arrest and secrete a range of proinflammatory factors, termed the senescence-associated secretory phenotype (SASP), which promotes tissue dysfunction and exacerbates CVD progression. Omics technologies, specifically transcriptomics and proteomics, offer powerful tools to uncover and define the molecular signatures of senescent cells in cardiovascular tissue. By analyzing the comprehensive molecular profiles of senescent cells, omics approaches can identify specific genetic alterations, gene expression patterns, protein abundances, and metabolite levels associated with senescence in CVD. These omics-based discoveries provide insights into the mechanisms underlying senescence-induced cardiovascular damage, facilitating the development of novel diagnostic biomarkers and therapeutic targets. Furthermore, integration of multiple omics data sets enables a systems-level understanding of senescence in CVD, paving the way for precision medicine approaches to prevent or treat cardiovascular aging and its associated complications.
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Affiliation(s)
- Sophia A Mahoney
- Department of Integrative Physiology, University of Colorado at Boulder, Boulder, Colorado, United States
| | - Amit K Dey
- Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States
| | - Nathan Basisty
- Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States
| | - Allison B Herman
- Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States
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42
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Fang X, Huang W, Sun Q, Zhao Y, Sun R, Liu F, Huang D, Zhang Y, Gao F, Wang B. Melatonin attenuates cellular senescence and apoptosis in diabetic nephropathy by regulating STAT3 phosphorylation. Life Sci 2023; 332:122108. [PMID: 37739161 DOI: 10.1016/j.lfs.2023.122108] [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: 06/27/2023] [Revised: 09/09/2023] [Accepted: 09/17/2023] [Indexed: 09/24/2023]
Abstract
AIMS Melatonin is an endogenous hormone related to the regulation of biorhythm. Previous researchers have found that melatonin can ameliorate diabetic nephropathy (DN), but the mechanism remains to be elucidated. To discover the possible mechanism by which melatonin prevents DN, we investigated the potential effects of melatonin on signal transducer and activator of transcription 3 (STAT3) on the progression of cellular senescence and apoptosis. MAIN METHODS Cellular senescence, apoptosis and the underlying mechanism of melatonin were investigated both in vivo and in vitro. C57BL/6 mice were intraperitoneally injected with streptozotocin (STZ) to establish DN. For an in vitro model of DN, human renal cortex proximal epithelial tubule (HK-2) cells were exposed to high glucose conditions. KEY FINDINGS Melatonin inhibited the phosphorylation of STAT3, decreased the expression of senescence proteins p53, p21 and p16INK4A. Melatonin also downregulated the expression of apoptotic proteins, including cleaved PARP1, cleaved caspase-9 and -3. Melatonin treatment decreased the positive area of senescence-associated galactosidase (SA-β-gal) staining and the number of TUNEL-positive cells in kidneys of DN mice. In vitro, melatonin inhibited STAT3 phosphorylation and lowered cellular senescence and apoptosis markers, in a manner similar to the STAT3 inhibitor S3I-201. In addition, the inhibition effect of melatonin on cellular senescence and apoptosis in HK-2 cells was reversed by the usage of recombinant IL-6 (rIL-6), which can induce STAT3 phosphorylation. SIGNIFICANCE We, for the first time, demonstrate that melatonin inhibits STAT3 phosphorylation, which is involved in alleviating the cellular senescence and apoptosis in DN.
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Affiliation(s)
- Xinzhe Fang
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Weiyi Huang
- Department of Clinical Pharmacy, Shantou University Medical College, Shantou 515041, China
| | - Qiang Sun
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Yang Zhao
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Rui Sun
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Fang Liu
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Danmei Huang
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Yanmei Zhang
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Fenfei Gao
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China
| | - Bin Wang
- Department of Pharmacology, Shantou University Medical College, Shantou 515041, China.
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Noh B, Blasco‐Conesa MP, Rahman SM, Monga S, Ritzel R, Guzman G, Lai Y, Ganesh BP, Urayama A, McCullough LD, Moruno‐Manchon JF. Iron overload induces cerebral endothelial senescence in aged mice and in primary culture in a sex-dependent manner. Aging Cell 2023; 22:e13977. [PMID: 37675802 PMCID: PMC10652299 DOI: 10.1111/acel.13977] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/13/2023] [Accepted: 08/16/2023] [Indexed: 09/08/2023] Open
Abstract
Iron imbalance in the brain negatively affects brain function. With aging, iron levels increase in the brain and contribute to brain damage and neurological disorders. Changes in the cerebral vasculature with aging may enhance iron entry into the brain parenchyma, leading to iron overload and its deleterious consequences. Endothelial senescence has emerged as an important contributor to age-related changes in the cerebral vasculature. Evidence indicates that iron overload may induce senescence in cultured cell lines. Importantly, cells derived from female human and mice generally show enhanced senescence-associated phenotype, compared with males. Thus, we hypothesize that cerebral endothelial cells (CEC) derived from aged female mice are more susceptible to iron-induced senescence, compared with CEC from aged males. We found that aged female mice, but not males, showed cognitive deficits when chronically treated with ferric citrate (FC), and their brains and the brain vasculature showed senescence-associated phenotype. We also found that primary culture of CEC derived from aged female mice, but not male-derived CEC, exhibited senescence-associated phenotype when treated with FC. We identified that the transmembrane receptor Robo4 was downregulated in the brain vasculature and in cultured primary CEC derived from aged female mice, compared with those from male mice. We discovered that Robo4 downregulation contributed to enhanced vulnerability to FC-induced senescence. Thus, our study identifies Robo4 downregulation as a driver of senescence induced by iron overload in primary culture of CEC and a potential risk factor of brain vasculature impairment and brain dysfunction.
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Affiliation(s)
- Brian Noh
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Maria Pilar Blasco‐Conesa
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Syed Mushfiqur Rahman
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Sheelu Monga
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Rodney Ritzel
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Gary Guzman
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Yun‐Ju Lai
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
- Solomont School of NursingZuckerberg College of Health SciencesUniversity of Massachusetts LowellLowellMassachusettsUSA
| | - Bhanu Priya Ganesh
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Akihiko Urayama
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Louise D. McCullough
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Jose Felix Moruno‐Manchon
- Department of NeurologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
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Kim ME, Lee JS. Immune Diseases Associated with Aging: Molecular Mechanisms and Treatment Strategies. Int J Mol Sci 2023; 24:15584. [PMID: 37958564 PMCID: PMC10647753 DOI: 10.3390/ijms242115584] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Aging is associated with a decline in immune function, thereby causing an increased susceptibility to various diseases. Herein, we review immune diseases associated with aging, focusing on tumors, atherosclerosis, and immunodeficiency disorders. The molecular mechanisms underlying these conditions are discussed, highlighting telomere shortening, tissue inflammation, and altered signaling pathways, e.g., the mammalian target of the rapamycin (mTOR) pathway, as key contributors to immune dysfunction. The role of the senescence-associated secretory phenotype in driving chronic tissue inflammation and disruption has been examined. Our review underscores the significance of targeting tissue inflammation and immunomodulation for treating immune disorders. In addition, anti-inflammatory medications, including corticosteroids and nonsteroidal anti-inflammatory drugs, and novel approaches, e.g., probiotics and polyphenols, are discussed. Immunotherapy, particularly immune checkpoint inhibitor therapy and adoptive T-cell therapy, has been explored for its potential to enhance immune responses in older populations. A comprehensive analysis of immune disorders associated with aging and underlying molecular mechanisms provides insights into potential treatment strategies to alleviate the burden of these conditions in the aging population. The interplay among immune dysfunction, chronic tissue inflammation, and innovative therapeutic approaches highlights the importance of elucidating these complex processes to develop effective interventions to improve the quality of life in older adults.
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Affiliation(s)
| | - Jun Sik Lee
- Department of Biological Science, Immunology Research Lab & BK21-Four Educational Research Group for Age-Associated Disorder Control Technology, Chosun University, Gwangju 61452, Republic of Korea;
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Li D, Li Y, Ding H, Wang Y, Xie Y, Zhang X. Cellular Senescence in Cardiovascular Diseases: From Pathogenesis to Therapeutic Challenges. J Cardiovasc Dev Dis 2023; 10:439. [PMID: 37887886 PMCID: PMC10607269 DOI: 10.3390/jcdd10100439] [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: 09/16/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023] Open
Abstract
Cellular senescence (CS), classically considered a stable cell cycle withdrawal, is hallmarked by a progressive decrease in cell growth, differentiation, and biological activities. Senescent cells (SNCs) display a complicated senescence-associated secretory phenotype (SASP), encompassing a variety of pro-inflammatory factors that exert influence on the biology of both the cell and surrounding tissue. Among global mortality causes, cardiovascular diseases (CVDs) stand out, significantly impacting the living quality and functional abilities of patients. Recent data suggest the accumulation of SNCs in aged or diseased cardiovascular systems, suggesting their potential role in impairing cardiovascular function. CS operates as a double-edged sword: while it can stimulate the restoration of organs under physiological conditions, it can also participate in organ and tissue dysfunction and pave the way for multiple chronic diseases under pathological states. This review explores the mechanisms that underlie CS and delves into the distinctive features that characterize SNCs. Furthermore, we describe the involvement of SNCs in the progression of CVDs. Finally, the study provides a summary of emerging interventions that either promote or suppress senescence and discusses their therapeutic potential in CVDs.
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Affiliation(s)
- Dan Li
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Yongnan Li
- Department of Cardiac Surgery, Lanzhou University Second Hospital, Lanzhou 730030, China;
| | - Hong Ding
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Yuqin Wang
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Yafei Xie
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
| | - Xiaowei Zhang
- Department of Cardiovascular Medicine, Lanzhou University Second Hospital, Lanzhou 730030, China; (D.L.); (H.D.); (Y.W.); (Y.X.)
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Yousefzadeh MJ, Huerta Guevara AP, Postmus AC, Flores RR, Sano T, Jurdzinski A, Angelini L, McGowan SJ, O’Kelly RD, Wade EA, Gonzalez-Espada LV, Henessy-Wack D, Howard S, Rozgaja TA, Trussoni CE, LaRusso NF, Eggen BJ, Jonker JW, Robbins PD, Niedernhofer LJ, Kruit JK. Failure to repair endogenous DNA damage in β-cells causes adult-onset diabetes in mice. AGING BIOLOGY 2023; 1:20230015. [PMID: 38124711 PMCID: PMC10732477 DOI: 10.59368/agingbio.20230015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Age is the greatest risk factor for the development of type 2 diabetes mellitus (T2DM). Age-related decline in organ function is attributed to the accumulation of stochastic damage, including damage to the nuclear genome. Islets of T2DM patients display increased levels of DNA damage. However, whether this is a cause or consequence of the disease has not been elucidated. Here, we asked if spontaneous, endogenous DNA damage in β-cells can drive β-cell dysfunction and diabetes, via deletion of Ercc1, a key DNA repair gene, in β-cells. Mice harboring Ercc1-deficient β-cells developed adult-onset diabetes as demonstrated by increased random and fasted blood glucose levels, impaired glucose tolerance, and reduced insulin secretion. The inability to repair endogenous DNA damage led to an increase in oxidative DNA damage and apoptosis in β-cells and a significant loss of β-cell mass. Using electron microscopy, we identified β-cells in clear distress that showed an increased cell size, enlarged nuclear size, reduced number of mature insulin granules, and decreased number of mitochondria. Some β-cells were more affected than others consistent with the stochastic nature of spontaneous DNA damage. Ercc1-deficiency in β-cells also resulted in loss of β-cell function as glucose-stimulated insulin secretion and mitochondrial function were impaired in islets isolated from mice harboring Ercc1-deficient β-cells. These data reveal that unrepaired endogenous DNA damage is sufficient to drive β-cell dysfunction and provide a mechanism by which age increases the risk of T2DM.
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Affiliation(s)
- Matthew J. Yousefzadeh
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Ana P. Huerta Guevara
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Andrea C. Postmus
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Rafael R. Flores
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Tokio Sano
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Angelika Jurdzinski
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Luise Angelini
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Sara J. McGowan
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Ryan D. O’Kelly
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Erin A. Wade
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Lisa V. Gonzalez-Espada
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Danielle Henessy-Wack
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Shannon Howard
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Tania A. Rozgaja
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
| | - Christy E. Trussoni
- Division of Gastroenterology and Center for Cell Signaling in Gastroenterology, Mayo Clinic, Rochester, MN 55905, USA
| | - Nicholas F. LaRusso
- Division of Gastroenterology and Center for Cell Signaling in Gastroenterology, Mayo Clinic, Rochester, MN 55905, USA
| | - Bart J.L. Eggen
- Department of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Johan W. Jonker
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Paul D. Robbins
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Laura J. Niedernhofer
- Department of Molecular Medicine and the Center on Aging, The Scripps Research Institute, 130 Scripps Way #3B3, Jupiter FL, 33458, USA
- Department of Biochemistry, Molecular Biology and Biophysics and Institute on the Biology of Aging and Metabolism, University of Minnesota, 6-155 Jackson Hall, 321 Church St., Minneapolis, MN 55455, USA
| | - Janine K. Kruit
- Department of Pediatrics, Section Molecular Metabolism and Nutrition, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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van der Linden J, Trap L, Scherer CV, Roks AJM, Danser AHJ, van der Pluijm I, Cheng C. Model Systems to Study the Mechanism of Vascular Aging. Int J Mol Sci 2023; 24:15379. [PMID: 37895059 PMCID: PMC10607365 DOI: 10.3390/ijms242015379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Cardiovascular diseases are the leading cause of death globally. Within cardiovascular aging, arterial aging holds significant importance, as it involves structural and functional alterations in arteries that contribute substantially to the overall decline in cardiovascular health during the aging process. As arteries age, their ability to respond to stress and injury diminishes, while their luminal diameter increases. Moreover, they experience intimal and medial thickening, endothelial dysfunction, loss of vascular smooth muscle cells, cellular senescence, extracellular matrix remodeling, and deposition of collagen and calcium. This aging process also leads to overall arterial stiffening and cellular remodeling. The process of genomic instability plays a vital role in accelerating vascular aging. Progeria syndromes, rare genetic disorders causing premature aging, exemplify the impact of genomic instability. Throughout life, our DNA faces constant challenges from environmental radiation, chemicals, and endogenous metabolic products, leading to DNA damage and genome instability as we age. The accumulation of unrepaired damages over time manifests as an aging phenotype. To study vascular aging, various models are available, ranging from in vivo mouse studies to cell culture options, and there are also microfluidic in vitro model systems known as vessels-on-a-chip. Together, these models offer valuable insights into the aging process of blood vessels.
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Affiliation(s)
- Janette van der Linden
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Molecular Genetics, Cancer Genomics Center Netherlands, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Lianne Trap
- Department of Pulmonary Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Caroline V. Scherer
- Department of Molecular Genetics, Cancer Genomics Center Netherlands, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Anton J. M. Roks
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - A. H. Jan Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Ingrid van der Pluijm
- Department of Molecular Genetics, Cancer Genomics Center Netherlands, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Vascular Surgery, Cardiovascular Institute, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Caroline Cheng
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MC, 3015 GD Rotterdam, The Netherlands
- Department of Nephrology and Hypertension, Division of Internal Medicine and Dermatology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
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Bu LL, Yuan HH, Xie LL, Guo MH, Liao DF, Zheng XL. New Dawn for Atherosclerosis: Vascular Endothelial Cell Senescence and Death. Int J Mol Sci 2023; 24:15160. [PMID: 37894840 PMCID: PMC10606899 DOI: 10.3390/ijms242015160] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/01/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023] Open
Abstract
Endothelial cells (ECs) form the inner linings of blood vessels, and are directly exposed to endogenous hazard signals and metabolites in the circulatory system. The senescence and death of ECs are not only adverse outcomes, but also causal contributors to endothelial dysfunction, an early risk marker of atherosclerosis. The pathophysiological process of EC senescence involves both structural and functional changes and has been linked to various factors, including oxidative stress, dysregulated cell cycle, hyperuricemia, vascular inflammation, and aberrant metabolite sensing and signaling. Multiple forms of EC death have been documented in atherosclerosis, including autophagic cell death, apoptosis, pyroptosis, NETosis, necroptosis, and ferroptosis. Despite this, the molecular mechanisms underlying EC senescence or death in atherogenesis are not fully understood. To provide a comprehensive update on the subject, this review examines the historic and latest findings on the molecular mechanisms and functional alterations associated with EC senescence and death in different stages of atherosclerosis.
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Affiliation(s)
- Lan-Lan Bu
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (L.-L.B.); (D.-F.L.)
| | - Huan-Huan Yuan
- College of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha 410208, China; (H.-H.Y.); (L.-L.X.); (M.-H.G.)
| | - Ling-Li Xie
- College of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha 410208, China; (H.-H.Y.); (L.-L.X.); (M.-H.G.)
- Departments of Biochemistry and Molecular Biology and Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Min-Hua Guo
- College of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha 410208, China; (H.-H.Y.); (L.-L.X.); (M.-H.G.)
| | - Duan-Fang Liao
- School of Pharmacy, Hunan University of Chinese Medicine, Changsha 410208, China; (L.-L.B.); (D.-F.L.)
| | - Xi-Long Zheng
- Departments of Biochemistry and Molecular Biology and Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
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Lorenzo EC, Torrance BL, Haynes L. Impact of senolytic treatment on immunity, aging, and disease. FRONTIERS IN AGING 2023; 4:1161799. [PMID: 37886012 PMCID: PMC10598643 DOI: 10.3389/fragi.2023.1161799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/31/2023] [Indexed: 10/28/2023]
Abstract
Cellular senescence has been implicated in the pathophysiology of many age-related diseases. However, it also plays an important protective role in the context of tumor suppression and wound healing. Reducing senescence burden through treatment with senolytic drugs or the use of genetically targeted models of senescent cell elimination in animals has shown positive results in the context of mitigating disease and age-associated inflammation. Despite positive, albeit heterogenous, outcomes in clinical trials, very little is known about the short-term and long-term immunological consequences of using senolytics as a treatment for age-related conditions. Further, many studies examining cellular senescence and senolytic treatment have been demonstrated in non-infectious disease models. Several recent reports suggest that senescent cell elimination may have benefits in COVID-19 and influenza resolution and disease prognosis. In this review, we discuss the current clinical trials and pre-clinical studies that are exploring the impact of senolytics on cellular immunity. We propose that while eliminating senescent cells may have an acute beneficial impact on primary immune responses, immunological memory may be negatively impacted. Closer investigation of senolytics on immune function and memory generation would provide insight as to whether senolytics could be used to enhance the aging immune system and have potential to be used as therapeutics or prophylactics in populations that are severely and disproportionately affected by infections such as the elderly and immunocompromised.
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Affiliation(s)
- Erica C. Lorenzo
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Blake L. Torrance
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Laura Haynes
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT, United States
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50
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Zhang X, Tyrrell DJ, Alliston T, Schilling B, Yousefzadeh MJ, Schafer MJ. Senescence and Inflammation: Summary of a Gerontological Society of America and National Institute on Aging-Sponsored Symposium. J Gerontol A Biol Sci Med Sci 2023; 78:1733-1739. [PMID: 37148367 PMCID: PMC10562889 DOI: 10.1093/gerona/glad120] [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: 01/26/2023] [Indexed: 05/08/2023] Open
Abstract
The National Institute on Aging sponsored a symposium at the Gerontological Society of America (GSA) annual meeting in Indianapolis, Indiana, to discuss recent discoveries related to senescent and inflammatory mechanisms in aging and disease. Consistent with the 2022 Biological Sciences GSA program led by Dr. Rozalyn Anderson, the symposium featured early-stage investigators and a leader in the field of geroscience research. Cell senescence and immune interactions coordinate homeostatic and protective programming throughout the life span. Dysfunctional communication in this exchange eventuates in inflammation-related compositional changes in aged tissues, including propagation of the senescence-associated secretory phenotype and accumulation of senescent and exhausted immune cells. Presentations in this symposium explored senescent and immune-related dysfunction in aging from diverse viewpoints and featured emerging cellular and molecular methods. A central takeaway from the event was that the use of new models and approaches, including single-cell -omics, novel mouse models, and 3D culture systems, is revealing dynamic properties and interactions of senescent and immune cell fates. This knowledge is critical for devising new therapeutic approaches with important translational relevance.
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Affiliation(s)
- Xu Zhang
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Daniel J Tyrrell
- Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
- Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Tamara Alliston
- Department of Orthopaedic Surgery, University of California San Francisco, San Francisco, California, USA
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California, USA
| | - Birgit Schilling
- The Buck Institute for Research on Aging, Novato, California, USA
| | - Matthew J Yousefzadeh
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, Minnesota, USA
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Marissa J Schafer
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
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