1
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Dubey SK, Dubey R, Prajapati SC, Jung K, Mohan K, Liu X, Roney J, Tian W, Abney J, Giarmarco MM, Hernandez AG, Liu J, Kleinman ME. Histone deficiency and hypoacetylation in the aging retinal pigment epithelium. Aging Cell 2024; 23:e14108. [PMID: 38408164 PMCID: PMC11113634 DOI: 10.1111/acel.14108] [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: 11/08/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 02/28/2024] Open
Abstract
Histones serve as a major carrier of epigenetic information in the form of post-translational modifications which are vital for controlling gene expression, maintaining cell identity, and ensuring proper cellular function. Loss of histones in the aging genome can drastically impact the epigenetic landscape of the cell leading to altered chromatin structure and changes in gene expression profiles. In this study, we investigated the impact of age-related changes on histone levels and histone acetylation in the retinal pigment epithelium (RPE) and retina of mice. We observed a global reduction of histones H1, H2A, H2B, H3, and H4 in aged RPE/choroid but not in the neural retina. Transcriptomic analyses revealed significant downregulation of histones in aged RPE/choroid including crucial elements of the histone locus body (HLB) complex involved in histone pre-mRNA processing. Knockdown of HINFP, a key HLB component, in human RPE cells induced histone loss, senescence, and the upregulation of senescence-associated secretory phenotype (SASP) markers. Replicative senescence and chronological aging in human RPE cells similarly resulted in progressive histone loss and acquisition of the SASP. Immunostaining of human retina sections revealed histone loss in RPE with age. Acetyl-histone profiling in aged mouse RPE/choroid revealed a specific molecular signature with loss of global acetyl-histone levels, including H3K14ac, H3K56ac, and H4K16ac marks. These findings strongly demonstrate histone loss as a unique feature of RPE aging and provide critical insights into the potential mechanisms linking histone dynamics, cellular senescence, and aging.
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Affiliation(s)
- Sushil K. Dubey
- Department of SurgeryEast Tennessee State UniversityJohnson CityTennesseeUSA
| | - Rashmi Dubey
- Department of SurgeryEast Tennessee State UniversityJohnson CityTennesseeUSA
| | - Subhash C. Prajapati
- Department of Biochemistry and Molecular GeneticsUniversity of VirginiaCharlottesvilleVirginiaUSA
| | - Kyungsik Jung
- Department of SurgeryEast Tennessee State UniversityJohnson CityTennesseeUSA
| | - Kabhilan Mohan
- Department of SurgeryEast Tennessee State UniversityJohnson CityTennesseeUSA
| | - Xinan Liu
- Department of Computer ScienceUniversity of KentuckyLexingtonKentuckyUSA
| | - Jacob Roney
- Department of Ophthalmology and Visual SciencesUniversity of KentuckyLexingtonKentuckyUSA
| | - Wenjian Tian
- Department of SurgeryEast Tennessee State UniversityJohnson CityTennesseeUSA
| | - Jennifer Abney
- Department of Ophthalmology and Visual SciencesUniversity of KentuckyLexingtonKentuckyUSA
| | | | - Alvaro G. Hernandez
- Roy J. Carver Biotechnology CenterUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
| | - Jinze Liu
- Department of BiostatisticsVirginia Commonwealth UniversityRichmondVirginiaUSA
| | - Mark E. Kleinman
- Department of SurgeryEast Tennessee State UniversityJohnson CityTennesseeUSA
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2
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Lorenzo EC, Figueroa JE, Demirci DA, El-Tayyeb F, Huggins BJ, Illindala M, Bartley JM, Haynes L, Diniz BS. Unraveling the association between major depressive disorder and senescent biomarkers in immune cells of older adults: a single-cell phenotypic analysis. FRONTIERS IN AGING 2024; 5:1376086. [PMID: 38665228 PMCID: PMC11043554 DOI: 10.3389/fragi.2024.1376086] [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: 01/24/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024]
Abstract
Background: Little is known about the prevalence of cellular senescence among immune cells (i.e., immune cells expressing senescence markers, iSCs) nor is there a gold-standard to efficiently measure iSCs. Major depressive disorder (MDD) in older adults has been associated with many hallmarks of senescence in whole blood, leukocytes, and plasma, supporting a strong connection between iSCs and MDD. Here, we investigated the prevalence and phenotype of iSCs in older adults with MDD. Using a single-cell phenotypic approach, circulating immune cells were examined for iSC biomarkers and their relationship to depression and inflammation. Results: PBMCs from older adults with MDD (aged 69.75 ± 5.23 years) and healthy controls (aged 71.25 ± 8.8 years) were examined for immune subset distribution and senescence biomarkers (i.e., lack of proliferation, senescence-associated heterochromatin foci (SAHF), and DNA damage). Dual-expression of SAHF and DNA damage was categorized by low, intermediate, and high expression. A significant increase in the number of high expressing total PBMCs (p = 0.01), monocytes (p = 0.008), a trending increase in the number of high expressing CD4 T cells (p = 0.06) was observed overall in those with MDD. There was also a significantly lower proportion of intermediate expressing cells in monocytes and CD4 T cells in MDD (p = 0.01 and p = 0.05, respectively). Correlation analysis revealed associations between iSCs and mRNA expression of factors related to SASP and immune cell function. Conclusion: MDD is associated with increased senescent cell biomarkers in immune cell populations delineated by distinct levels of SAHF and DNA damage. Inflammatory markers might serve as potent indicators of iSC burden in MDD.
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Affiliation(s)
- Erica C. Lorenzo
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Jovany E. Figueroa
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
- Ponce Health Sciences University School of Medicine, Ponce, PR, United States
| | - Derya A. Demirci
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Ferris El-Tayyeb
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Billy J. Huggins
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Medha Illindala
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Jenna M. Bartley
- UConn Health Center on Aging, 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
| | - Breno S. Diniz
- UConn Health Center on Aging, University of Connecticut School of Medicine, Farmington, CT, United States
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3
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Dubey SK, Dubey R, Kleinman ME. Unraveling Histone Loss in Aging and Senescence. Cells 2024; 13:320. [PMID: 38391933 PMCID: PMC10886805 DOI: 10.3390/cells13040320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/24/2024] Open
Abstract
As the global population experiences a notable surge in aging demographics, the need to understand the intricate molecular pathways exacerbated by age-related stresses, including epigenetic dysregulation, becomes a priority. Epigenetic mechanisms play a critical role in driving age-related diseases through altered gene expression, genomic instability, and irregular chromatin remodeling. In this review, we focus on histones, a central component of the epigenome, and consolidate the key findings of histone loss and genome-wide redistribution as fundamental processes contributing to aging and senescence. The review provides insights into novel histone expression profiles, nucleosome occupancy, disruptions in higher-order chromatin architecture, and the emergence of noncanonical histone variants in the aging cellular landscape. Furthermore, we explore the current state of our understanding of the molecular mechanisms of histone deficiency in aging cells. Specific emphasis is placed on highlighting histone degradation pathways in the cell and studies that have explored potential strategies to mitigate histone loss or restore histone levels in aging cells. Finally, in addressing future perspectives, the insights gained from this review hold profound implications for advancing strategies that actively intervene in modulating histone expression profiles in the context of cellular aging and identifying potential therapeutic targets for alleviating a multitude of age-related diseases.
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Affiliation(s)
| | | | - Mark Ellsworth Kleinman
- Department of Surgery, East Tennessee State University, Johnson City, TN 37614, USA; (S.K.D.); (R.D.)
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4
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Bellani MA, Shaik A, Majumdar I, Ling C, Seidman MM. The Response of the Replication Apparatus to Leading Template Strand Blocks. Cells 2023; 12:2607. [PMID: 37998342 PMCID: PMC10670059 DOI: 10.3390/cells12222607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
Duplication of the genome requires the replication apparatus to overcome a variety of impediments, including covalent DNA adducts, the most challenging of which is on the leading template strand. Replisomes consist of two functional units, a helicase to unwind DNA and polymerases to synthesize it. The helicase is a multi-protein complex that encircles the leading template strand and makes the first contact with a leading strand adduct. The size of the channel in the helicase would appear to preclude transit by large adducts such as DNA: protein complexes (DPC). Here we discuss some of the extensively studied pathways that support replication restart after replisome encounters with leading template strand adducts. We also call attention to recent work that highlights the tolerance of the helicase for adducts ostensibly too large to pass through the central channel.
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Affiliation(s)
| | | | | | | | - Michael M. Seidman
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; (M.A.B.)
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5
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López-Gil L, Pascual-Ahuir A, Proft M. Genomic Instability and Epigenetic Changes during Aging. Int J Mol Sci 2023; 24:14279. [PMID: 37762580 PMCID: PMC10531692 DOI: 10.3390/ijms241814279] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
Aging is considered the deterioration of physiological functions along with an increased mortality rate. This scientific review focuses on the central importance of genomic instability during the aging process, encompassing a range of cellular and molecular changes that occur with advancing age. In particular, this revision addresses the genetic and epigenetic alterations that contribute to genomic instability, such as telomere shortening, DNA damage accumulation, and decreased DNA repair capacity. Furthermore, the review explores the epigenetic changes that occur with aging, including modifications to histones, DNA methylation patterns, and the role of non-coding RNAs. Finally, the review discusses the organization of chromatin and its contribution to genomic instability, including heterochromatin loss, chromatin remodeling, and changes in nucleosome and histone abundance. In conclusion, this review highlights the fundamental role that genomic instability plays in the aging process and underscores the need for continued research into these complex biological mechanisms.
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Affiliation(s)
- Lucía López-Gil
- Department of Biotechnology, Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València, Ingeniero Fausto Elio s/n, 46022 Valencia, Spain;
- Department of Molecular and Cellular Pathology and Therapy, Instituto de Biomedicina de Valencia IBV-CSIC, Consejo Superior de Investigaciones Científicas CSIC, Jaime Roig 11, 46010 Valencia, Spain
| | - Amparo Pascual-Ahuir
- Department of Biotechnology, Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València, Ingeniero Fausto Elio s/n, 46022 Valencia, Spain;
| | - Markus Proft
- Department of Molecular and Cellular Pathology and Therapy, Instituto de Biomedicina de Valencia IBV-CSIC, Consejo Superior de Investigaciones Científicas CSIC, Jaime Roig 11, 46010 Valencia, Spain
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6
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Sturmlechner I, Jain A, Mu Y, Weyand CM, Goronzy JJ. T cell fate decisions during memory cell generation with aging. Semin Immunol 2023; 69:101800. [PMID: 37494738 PMCID: PMC10528238 DOI: 10.1016/j.smim.2023.101800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
The defense against infectious diseases, either through natural immunity or after vaccinations, relies on the generation and maintenance of protective T cell memory. Naïve T cells are at the center of memory T cell generation during primary responses. Upon activation, they undergo a complex, highly regulated differentiation process towards different functional states. Naïve T cells maintained into older age have undergone epigenetic adaptations that influence their fate decisions during differentiation. We review age-sensitive, molecular pathways and gene regulatory networks that bias naïve T cell differentiation towards effector cell generation at the expense of memory and Tfh cells. As a result, T cell differentiation in older adults is associated with release of bioactive waste products into the microenvironment, higher stress sensitivity as well as skewing towards pro-inflammatory signatures and shorter life spans. These maladaptations not only contribute to poor vaccine responses in older adults but also fuel a more inflammatory state.
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Affiliation(s)
- Ines Sturmlechner
- Department of Immunology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA
| | - Abhinav Jain
- Department of Immunology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA
| | - Yunmei Mu
- Department of Immunology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA
| | - Cornelia M Weyand
- Department of Immunology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA; Department of Medicine, Division of Rheumatology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA
| | - Jörg J Goronzy
- Department of Immunology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA; Department of Medicine, Division of Rheumatology, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA; Robert and Arlene Kogod Center on Aging, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA.
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7
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Jin J, Mu Y, Zhang H, Sturmlechner I, Wang C, Jadhav RR, Xia Q, Weyand CM, Goronzy JJ. CISH impairs lysosomal function in activated T cells resulting in mitochondrial DNA release and inflammaging. NATURE AGING 2023; 3:600-616. [PMID: 37118554 PMCID: PMC10388378 DOI: 10.1038/s43587-023-00399-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/15/2023] [Indexed: 04/30/2023]
Abstract
Chronic systemic inflammation is one of the hallmarks of the aging immune system. Here we show that activated T cells from older adults contribute to inflammaging by releasing mitochondrial DNA (mtDNA) into their environment due to an increased expression of the cytokine-inducible SH2-containing protein (CISH). CISH targets ATP6V1A, an essential component of the proton pump V-ATPase, for proteasomal degradation, thereby impairing lysosomal function. Impaired lysosomal activity caused intracellular accumulation of multivesicular bodies and amphisomes and the export of their cargos, including mtDNA. CISH silencing in T cells from older adults restored lysosomal activity and prevented amphisomal release. In antigen-specific responses in vivo, CISH-deficient CD4+ T cells released less mtDNA and induced fewer inflammatory cytokines. Attenuating CISH expression may present a promising strategy to reduce inflammation in an immune response of older individuals.
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Affiliation(s)
- Jun Jin
- Multiscale Research Institute for Complex Systems, Fudan University, Shanghai, China.
- Department of Immunology, Mayo Clinic, Rochester, MN, USA.
- Department of Medicine, Stanford University, Stanford, CA, USA.
| | - Yunmei Mu
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
| | - Huimin Zhang
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
- Department of Medicine, Stanford University, Stanford, CA, USA
| | | | - Chenyao Wang
- Department of Medicine, Division of Rheumatology, Mayo Clinic, Rochester, MN, USA
| | - Rohit R Jadhav
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
- Department of Medicine, Stanford University, Stanford, CA, USA
| | - Qiong Xia
- Department of Medicine, Stanford University, Stanford, CA, USA
| | - Cornelia M Weyand
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
- Department of Medicine, Stanford University, Stanford, CA, USA
- Department of Medicine, Division of Rheumatology, Mayo Clinic, Rochester, MN, USA
| | - Jorg J Goronzy
- Department of Immunology, Mayo Clinic, Rochester, MN, USA.
- Department of Medicine, Stanford University, Stanford, CA, USA.
- Department of Medicine, Division of Rheumatology, Mayo Clinic, Rochester, MN, USA.
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8
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Kim JK, Silwal P, Jo EK. Sirtuin 1 in Host Defense during Infection. Cells 2022; 11:cells11182921. [PMID: 36139497 PMCID: PMC9496836 DOI: 10.3390/cells11182921] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Sirtuins (SIRTs) are members of the class III histone deacetylase family and epigenetically control multiple target genes to modulate diverse biological responses in cells. Among the SIRTs, SIRT1 is the most well-studied, with a role in the modulation of immune and inflammatory responses following infection. The functions of SIRT1 include orchestrating immune, inflammatory, metabolic, and autophagic responses, all of which are required in establishing and controlling host defenses during infection. In this review, we summarize recent information on the roles of SIRT1 and its regulatory mechanisms during bacterial, viral, and parasitic infections. We also discuss several SIRT1 modulators, as potential antimicrobial treatments. Understanding the function of SIRT1 in balancing immune homeostasis will contribute to the development of new therapeutics for the treatment of infection and inflammatory disease.
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Affiliation(s)
- Jin Kyung Kim
- Department of Microbiology, Keimyung University School of Medicine, Daegu 42601, Korea
| | - Prashanta Silwal
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Eun-Kyeong Jo
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Correspondence:
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9
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Zhao TV, Sato Y, Goronzy JJ, Weyand CM. T-Cell Aging-Associated Phenotypes in Autoimmune Disease. FRONTIERS IN AGING 2022; 3:867950. [PMID: 35821833 PMCID: PMC9261367 DOI: 10.3389/fragi.2022.867950] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/28/2022] [Indexed: 01/10/2023]
Abstract
The aging process causes profound restructuring of the host immune system, typically associated with declining host protection against cancer and infection. In the case of T cells, aging leads to the accumulation of a diverse set of T-cell aging-associated phenotypes (TASP), some of which have been implicated in driving tissue inflammation in autoimmune diseases. T cell aging as a risk determinant for autoimmunity is exemplified in two classical autoimmune conditions: rheumatoid arthritis (RA), a disease predominantly affecting postmenopausal women, and giant cell arteritis (GCA), an inflammatory vasculopathy exclusively occurring during the 6th-9th decade of life. Pathogenic T cells in RA emerge as a consequence of premature immune aging. They have shortening and fragility of telomeric DNA ends and instability of mitochondrial DNA. As a result, they produce a distinct profile of metabolites, disproportionally expand their endoplasmic reticulum (ER) membranes and release excess amounts of pro-inflammatory effector cytokines. Characteristically, they are tissue invasive, activate the inflammasome and die a pyroptotic death. Patients with GCA expand pathogenic CD4+ T cells due to aberrant expression of the co-stimulatory receptor NOTCH1 and the failure of the PD-1/PD-L1 immune checkpoint. In addition, GCA patients lose anti-inflammatory Treg cells, promoting tissue-destructive granulomatous vasculitis. In summary, emerging data identify T cell aging as a risk factor for autoimmune disease and directly link TASPs to the breakdown of T cell tolerance and T-cell-induced tissue inflammation.
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Affiliation(s)
- Tuantuan V. Zhao
- Mayo Clinic Alix School of Medicine, College of Medicine and Science, Rochester, MN, United States
| | - Yuki Sato
- Mayo Clinic Alix School of Medicine, College of Medicine and Science, Rochester, MN, United States
| | - Jorg J. Goronzy
- Mayo Clinic Alix School of Medicine, College of Medicine and Science, Rochester, MN, United States
- School of Medicine, Stanford University, Stanford, CA, United States
| | - Cornelia M. Weyand
- Mayo Clinic Alix School of Medicine, College of Medicine and Science, Rochester, MN, United States
- School of Medicine, Stanford University, Stanford, CA, United States
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10
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Galow AM, Peleg S. How to Slow down the Ticking Clock: Age-Associated Epigenetic Alterations and Related Interventions to Extend Life Span. Cells 2022; 11:468. [PMID: 35159278 PMCID: PMC8915189 DOI: 10.3390/cells11030468] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 01/26/2022] [Indexed: 02/04/2023] Open
Abstract
Epigenetic alterations pose one major hallmark of organismal aging. Here, we provide an overview on recent findings describing the epigenetic changes that arise during aging and in related maladies such as neurodegeneration and cancer. Specifically, we focus on alterations of histone modifications and DNA methylation and illustrate the link with metabolic pathways. Age-related epigenetic, transcriptional and metabolic deregulations are highly interconnected, which renders dissociating cause and effect complicated. However, growing amounts of evidence support the notion that aging is not only accompanied by epigenetic alterations, but also at least in part induced by those. DNA methylation clocks emerged as a tool to objectively determine biological aging and turned out as a valuable source in search of factors positively and negatively impacting human life span. Moreover, specific epigenetic signatures can be used as biomarkers for age-associated disorders or even as targets for therapeutic approaches, as will be covered in this review. Finally, we summarize recent potential intervention strategies that target epigenetic mechanisms to extend healthy life span and provide an outlook on future developments in the field of longevity research.
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Affiliation(s)
- Anne-Marie Galow
- Institute for Genome Biology, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
| | - Shahaf Peleg
- Research Group Epigenetics, Metabolism and Longevity, Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany
- Institute of Neuroregeneration and Neurorehabilitation of Qingdao University, Qingdao 266071, China
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11
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Bautista-Becerril B, Pérez-Dimas G, Sommerhalder-Nava PC, Hanono A, Martínez-Cisneros JA, Zarate-Maldonado B, Muñoz-Soria E, Aquino-Gálvez A, Castillejos-López M, Juárez-Cisneros A, Lopez-Gonzalez JS, Camarena A. miRNAs, from Evolutionary Junk to Possible Prognostic Markers and Therapeutic Targets in COVID-19. Viruses 2021; 14:41. [PMID: 35062245 PMCID: PMC8781105 DOI: 10.3390/v14010041] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 12/21/2021] [Indexed: 01/08/2023] Open
Abstract
The COVID-19 pandemic has been a public health issue around the world in the last few years. Currently, there is no specific antiviral treatment to fight the disease. Thus, it is essential to highlight possible prognostic predictors that could identify patients with a high risk of developing complications. Within this framework, miRNA biomolecules play a vital role in the genetic regulation of various genes, principally, those related to the pathophysiology of the disease. Here, we review the interaction of host and viral microRNAs with molecular and cellular elements that could potentiate the main pulmonary, cardiac, renal, circulatory, and neuronal complications in COVID-19 patients. miR-26a, miR-29b, miR-21, miR-372, and miR-2392, among others, have been associated with exacerbation of the inflammatory process, increasing the risk of a cytokine storm. In addition, increased expression of miR-15b, -199a, and -491 are related to the prognosis of the disease, and miR-192 and miR-323a were identified as clinical predictors of mortality in patients admitted to the intensive care unit. Finally, we address miR-29, miR-122, miR-155, and miR-200, among others, as possible therapeutic targets. However, more studies are required to confirm these findings.
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Affiliation(s)
- Brandon Bautista-Becerril
- Laboratorio HLA, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City 14080, Mexico; (B.B.-B.); (A.J.-C.)
- Escuela Superior de Medicina, Departamento de Posgrado, Instituto Politécnico Nacional, Mexico City 11340, Mexico; (G.P.-D.); (E.M.-S.)
| | - Guillermo Pérez-Dimas
- Escuela Superior de Medicina, Departamento de Posgrado, Instituto Politécnico Nacional, Mexico City 11340, Mexico; (G.P.-D.); (E.M.-S.)
| | - Paola C. Sommerhalder-Nava
- Facultad de Ciencias de la Salud, Universidad Anáhuac México Norte, Mexico City 52786, Mexico; (P.C.S.-N.); (A.H.); (B.Z.-M.)
| | - Alejandro Hanono
- Facultad de Ciencias de la Salud, Universidad Anáhuac México Norte, Mexico City 52786, Mexico; (P.C.S.-N.); (A.H.); (B.Z.-M.)
| | | | - Bárbara Zarate-Maldonado
- Facultad de Ciencias de la Salud, Universidad Anáhuac México Norte, Mexico City 52786, Mexico; (P.C.S.-N.); (A.H.); (B.Z.-M.)
| | - Evangelina Muñoz-Soria
- Escuela Superior de Medicina, Departamento de Posgrado, Instituto Politécnico Nacional, Mexico City 11340, Mexico; (G.P.-D.); (E.M.-S.)
| | - Arnoldo Aquino-Gálvez
- Laboratorio de Biología Molecular, Departamento de Fibrosis Pulmonar, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City 14080, Mexico;
| | - Manuel Castillejos-López
- Departamento de Epidemiología Hospitalaria e Infectología, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City 14080, Mexico;
| | - Armida Juárez-Cisneros
- Laboratorio HLA, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City 14080, Mexico; (B.B.-B.); (A.J.-C.)
| | - Jose S. Lopez-Gonzalez
- Laboratorio de Cáncer Pulmonar, Departamento de Enfermedades Crónico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City 14080, Mexico;
| | - Angel Camarena
- Laboratorio HLA, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City 14080, Mexico; (B.B.-B.); (A.J.-C.)
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12
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Gámez-García A, Vazquez BN. Nuclear Sirtuins and the Aging of the Immune System. Genes (Basel) 2021; 12:1856. [PMID: 34946805 PMCID: PMC8701065 DOI: 10.3390/genes12121856] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 12/24/2022] Open
Abstract
The immune system undergoes major changes with age that result in altered immune populations, persistent inflammation, and a reduced ability to mount effective immune responses against pathogens and cancer cells. Aging-associated changes in the immune system are connected to other age-related diseases, suggesting that immune system rejuvenation may provide a feasible route to improving overall health in the elderly. The Sir2 family of proteins, also called sirtuins, have been broadly implicated in genome homeostasis, cellular metabolism, and aging. Sirtuins are key responders to cellular and environmental stress and, in the case of the nuclear sirtuins, they do so by directing responses to chromatin that include gene expression regulation, retrotransposon repression, enhanced DNA damage repair, and faithful chromosome segregation. In the immune system, sirtuins instruct cellular differentiation from hematopoietic precursors and promote leukocyte polarization and activation. In hematopoietic stem cells, sirtuins safeguard quiescence and stemness to prevent cellular exhaustion. Regulation of cytokine production, which, in many cases, requires NF-κB regulation, is the best-characterized mechanism by which sirtuins control innate immune reactivity. In adaptive immunity, sirtuins promote T cell subset differentiation by controlling master regulators, thereby ensuring an optimal balance of helper (Th) T cell-dependent responses. Sirtuins are very important for immune regulation, but the means by which they regulate immunosenescence are not well understood. This review provides an integrative overview of the changes associated with immune system aging and its potential relationship with the roles of nuclear sirtuins in immune cells and overall organismal aging. Given the anti-aging properties of sirtuins, understanding how they contribute to immune responses is of vital importance and may help us develop novel strategies to improve immune performance in the aging organism.
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Affiliation(s)
- Andrés Gámez-García
- Chromatin Biology Laboratory, Josep Carreras Leukaemia Research Institute (IJC), Ctra de Can Ruti, Camí de les Escoles s/n, 08916 Badalona, Spain;
| | - Berta N. Vazquez
- Chromatin Biology Laboratory, Josep Carreras Leukaemia Research Institute (IJC), Ctra de Can Ruti, Camí de les Escoles s/n, 08916 Badalona, Spain;
- Unitat de Citologia i d’Histologia, Departament de Biologia Cellular, Fisiologia i Immunologia, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Valles, 08193 Barcelona, Spain
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Natarelli L, Virgili F, Weber C. SARS-CoV-2, Cardiovascular Diseases, and Noncoding RNAs: A Connected Triad. Int J Mol Sci 2021; 22:12243. [PMID: 34830125 PMCID: PMC8620514 DOI: 10.3390/ijms222212243] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 12/23/2022] Open
Abstract
Coronavirus Disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), is characterized by important respiratory impairments frequently associated with severe cardiovascular damages. Moreover, patients with pre-existing comorbidity for cardiovascular diseases (CVD) often present a dramatic increase in inflammatory cytokines release, which increases the severity and adverse outcomes of the infection and, finally, mortality risk. Despite this evident association at the clinical level, the mechanisms linking CVD and COVID-19 are still blurry and unresolved. Noncoding RNAs (ncRNAs) are functional RNA molecules transcribed from DNA but usually not translated into proteins. They play an important role in the regulation of gene expression, either in relatively stable conditions or as a response to different stimuli, including viral infection, and are therefore considered a possible important target in the design of specific drugs. In this review, we introduce known associations and interactions between COVID-19 and CVD, discussing the role of ncRNAs within SARS-CoV-2 infection from the perspective of the development of efficient pharmacological tools to treat COVID-19 patients and taking into account the equally dramatic associated consequences, such as those affecting the cardiovascular system.
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Affiliation(s)
- Lucia Natarelli
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-Universität (LMU), 800336 Munich, Germany;
| | - Fabio Virgili
- Research Center for Food and Nutrition, Council for Agricultural Research and Economics, 00178 Rome, Italy;
| | - Christian Weber
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-Universität (LMU), 800336 Munich, Germany;
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 80336 Munich, Germany
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229 HX Maastricht, The Netherlands
- Munich Cluster for Systems Neurology (SyNergy), Institute for Stroke and Dementia Research, 81377 Munich, Germany
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14
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Kim C, Ye Z, Weyand CM, Goronzy JJ. miR-181a-regulated pathways in T-cell differentiation and aging. Immun Ageing 2021; 18:28. [PMID: 34130717 PMCID: PMC8203492 DOI: 10.1186/s12979-021-00240-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/08/2021] [Indexed: 02/06/2023]
Abstract
MicroRNAs (miRNAs) are regulatory noncoding RNAs important for many aspects of cellular processes including cell differentiation and proliferation. Functions of numerous miRNAs have been identified in T cells, with miR-181a regulating T cell activation thresholds during thymic T cell development and during activation of peripheral T cells. Intriguingly, miR-181a is implicated in defective antiviral and vaccine responses in older individuals, as its expression declines in naïve T cells with increasing age. Here, we review the pathways that are regulated by miR-181a and that explain the unique role of miR-181a in T cell development, T cell activation and antiviral T cell responses. These studies provide a framework for understanding how a decline in miR-181a expression in T cells could contribute to age-related defects in adaptive immunity. We furthermore review the mechanisms that cause the age-related decline in miR-181a expression and discuss the potential of restoring miR-181a expression or targeting miR-181a-regulated pathways to improve impaired T cell responses in older individuals.
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Affiliation(s)
- Chulwoo Kim
- Department of Microbiology, Institute for Viral Diseases, Korea University College of Medicine, Seoul, Republic of Korea.
| | - Zhongde Ye
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University, Stanford, CA, USA
- Department of Medicine, Palo Alto Veterans Administration Healthcare System, Palo Alto, CA, USA
| | - Cornelia M Weyand
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University, Stanford, CA, USA
- Department of Medicine, Palo Alto Veterans Administration Healthcare System, Palo Alto, CA, USA
| | - Jörg J Goronzy
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University, Stanford, CA, USA.
- Department of Medicine, Palo Alto Veterans Administration Healthcare System, Palo Alto, CA, USA.
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Jin J, Zhang H, Weyand CM, Goronzy JJ. Lysosomes in T Cell Immunity and Aging. FRONTIERS IN AGING 2021; 2:809539. [PMID: 35822050 PMCID: PMC9261317 DOI: 10.3389/fragi.2021.809539] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 11/23/2021] [Indexed: 05/01/2023]
Abstract
Lysosomes were initially recognized as degradation centers that regulate digestion and recycling of cellular waste. More recent studies document that the lysosome is an important signaling hub that regulates cell metabolism. Our knowledge of the role of lysosomes in immunity is mostly derived from innate immune cells, especially lysosomal degradation-specialized cells such as macrophages and dendritic cells. Their function in adaptive immunity is less understood. However, with the recent emphasis on metabolic regulation of T cell differentiation, lysosomes are entering center stage in T cell immunology. In this review, we will focus on the role of lysosomes in adaptive immunity and discuss recent findings on lysosomal regulation of T cell immune responses and lysosomal dysfunction in T cell aging.
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Affiliation(s)
- Jun Jin
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine/Rheumatology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine, Stanford University, Stanford, CA, United States
| | - Huimin Zhang
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine/Rheumatology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine, Stanford University, Stanford, CA, United States
| | - Cornelia M. Weyand
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine/Rheumatology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine, Stanford University, Stanford, CA, United States
| | - Jorg J. Goronzy
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine/Rheumatology, Mayo Clinic, Rochester, MN, United States
- Department of Medicine, Stanford University, Stanford, CA, United States
- *Correspondence: Jorg J. Goronzy,
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