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Singh A, Schurman SH, Bektas A, Kaileh M, Roy R, Wilson DM, Sen R, Ferrucci L. Aging and Inflammation. Cold Spring Harb Perspect Med 2024; 14:a041197. [PMID: 38052484 PMCID: PMC11146314 DOI: 10.1101/cshperspect.a041197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Aging can be conceptualized as the progressive disequilibrium between stochastic damage accumulation and resilience mechanisms that continuously repair that damage, which eventually cause the development of chronic disease, frailty, and death. The immune system is at the forefront of these resilience mechanisms. Indeed, aging is associated with persistent activation of the immune system, witnessed by a high circulating level of inflammatory markers and activation of immune cells in the circulation and in tissue, a condition called "inflammaging." Like aging, inflammaging is associated with increased risk of many age-related pathologies and disabilities, as well as frailty and death. Herein we discuss recent advances in the understanding of the mechanisms leading to inflammaging and the intrinsic dysregulation of the immune function that occurs with aging. We focus on the underlying mechanisms of chronic inflammation, in particular the role of NF-κB and recent studies targeting proinflammatory mediators. We further explore the dysregulation of the immune response with age and immunosenescence as an important mechanistic immune response to acute stressors. We examine the role of the gastrointestinal microbiome, age-related dysbiosis, and the integrated stress response in modulating the inflammatory "response" to damage accumulation and stress. We conclude by focusing on the seminal question of whether reducing inflammation is useful and the results of related clinical trials. In summary, we propose that inflammation may be viewed both as a clinical biomarker of the failure of resilience mechanisms and as a causal factor in the rising burden of disease and disabilities with aging. The fact that inflammation can be reduced through nonpharmacological interventions such as diet and exercise suggests that a life course approach based on education may be a successful strategy to increase the health span with few adverse consequences.
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Affiliation(s)
- Amit Singh
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, Baltimore, Maryland 21224, USA
| | - Shepherd H Schurman
- Clinical Research Unit, National Institute on Aging, Baltimore, Maryland 21224, USA
| | - Arsun Bektas
- Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland 21224, USA
| | - Mary Kaileh
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, Baltimore, Maryland 21224, USA
| | - Roshni Roy
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, Baltimore, Maryland 21224, USA
| | - David M Wilson
- Biomedical Research Institute, Hasselt University, Diepenbeek 3500, Belgium
| | - Ranjan Sen
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, Baltimore, Maryland 21224, USA
| | - Luigi Ferrucci
- Translational Gerontology Branch, National Institute on Aging, Baltimore, Maryland 21224, USA
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2
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Jin P, Duan X, Li L, Zhou P, Zou C, Xie K. Cellular senescence in cancer: molecular mechanisms and therapeutic targets. MedComm (Beijing) 2024; 5:e542. [PMID: 38660685 PMCID: PMC11042538 DOI: 10.1002/mco2.542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 02/28/2024] [Accepted: 03/07/2024] [Indexed: 04/26/2024] Open
Abstract
Aging exhibits several hallmarks in common with cancer, such as cellular senescence, dysbiosis, inflammation, genomic instability, and epigenetic changes. In recent decades, research into the role of cellular senescence on tumor progression has received widespread attention. While how senescence limits the course of cancer is well established, senescence has also been found to promote certain malignant phenotypes. The tumor-promoting effect of senescence is mainly elicited by a senescence-associated secretory phenotype, which facilitates the interaction of senescent tumor cells with their surroundings. Targeting senescent cells therefore offers a promising technique for cancer therapy. Drugs that pharmacologically restore the normal function of senescent cells or eliminate them would assist in reestablishing homeostasis of cell signaling. Here, we describe cell senescence, its occurrence, phenotype, and impact on tumor biology. A "one-two-punch" therapeutic strategy in which cancer cell senescence is first induced, followed by the use of senotherapeutics for eliminating the senescent cells is introduced. The advances in the application of senotherapeutics for targeting senescent cells to assist cancer treatment are outlined, with an emphasis on drug categories, and the strategies for their screening, design, and efficient targeting. This work will foster a thorough comprehension and encourage additional research within this field.
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Affiliation(s)
- Ping Jin
- State Key Laboratory for Conservation and Utilization of Bio‐Resources in Yunnan, School of Life SciencesYunnan UniversityKunmingYunnanChina
| | - Xirui Duan
- Department of OncologySchool of MedicineSichuan Academy of Medical Sciences and Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina
| | - Lei Li
- Department of Anorectal SurgeryHospital of Chengdu University of Traditional Chinese Medicine and Chengdu University of Traditional Chinese MedicineChengduChina
| | - Ping Zhou
- Department of OncologySchool of MedicineSichuan Academy of Medical Sciences and Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina
| | - Cheng‐Gang Zou
- State Key Laboratory for Conservation and Utilization of Bio‐Resources in Yunnan, School of Life SciencesYunnan UniversityKunmingYunnanChina
| | - Ke Xie
- Department of OncologySchool of MedicineSichuan Academy of Medical Sciences and Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuanChina
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Ramoni D, Tirandi A, Montecucco F, Liberale L. Sepsis in elderly patients: the role of neutrophils in pathophysiology and therapy. Intern Emerg Med 2024:10.1007/s11739-023-03515-1. [PMID: 38294676 DOI: 10.1007/s11739-023-03515-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/17/2023] [Indexed: 02/01/2024]
Abstract
Sepsis is among the most important causes of mortality, particularly within the elderly population. Sepsis prevalence is on the rise due to different factors, including increasing average population age and the concomitant rise in the prevalence of frailty and chronic morbidities. Recent investigations have unveiled a "trimodal" trajectory for sepsis-related mortality, with the ultimate zenith occurring from 60 to 90 days until several years after the original insult. This prolonged temporal course ostensibly emanates from the sustained perturbation of immune responses, persevering beyond the phase of clinical convalescence. This phenomenon is particularly associated with the aging immune system, characterized by a broad dysregulation commonly known as "inflammaging." Inflammaging associates with a chronic low-grade activation of the innate immune system preventing an appropriate response to infective agents. Notably, during the initial phases of sepsis, neutrophils-essential in combating pathogens-may exhibit compromised activity. Paradoxically, an overly zealous neutrophilic reaction has been observed to underlie multi-organ dysfunction during the later stages of sepsis. Given this scenario, discovering treatments that can enhance neutrophil activity during the early phases of sepsis while curbing their overactivity in the later phases could prove beneficial in fighting pathogens and reducing the detrimental effects caused by an overactive immune system. This narrative review delves into the potential key role of neutrophils in the pathological process of sepsis, focusing on how the aging process impacts their functions, and highlighting possible targets for developing immune-modulatory therapies. Additionally, the review includes tables that outline the principal potential targets for immunomodulating agents.
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Affiliation(s)
- Davide Ramoni
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
| | - Amedeo Tirandi
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy
| | - Luca Liberale
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 Viale Benedetto XV, 16132, Genoa, Italy.
- IRCCS Ospedale Policlinico San Martino Genoa-Italian Cardiovascular Network, Genoa, Italy.
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Zhao H, Fan S, Sun J. Delayed Wound Healing in the Elderly and a New Therapeutic Target: CD271. Curr Stem Cell Res Ther 2024; 19:316-323. [PMID: 37016526 DOI: 10.2174/1574888x18666230403083603] [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: 08/03/2022] [Revised: 11/21/2022] [Accepted: 12/29/2022] [Indexed: 04/06/2023]
Abstract
With the development of society, the global population is showing a trend of aging. It is well known that age is one of the factors affecting wound healing. Aging compromises the normal physiological process of wound healing, such as the change of skin structure, the decrease of growth factors, the deceleration of cell proliferation, and the weakening of migration ability, hence delaying wound healing. At present, research in adult stem cell-related technology and its derived regenerative medicine provides a novel idea for the treatment of senile wounds. Studies have confirmed that CD271 (P75 neurotropism receptor/P75NTR)-positive cells (CD271+ cells) are a kind of stem cells with a stronger ability of proliferation, differentiation, migration and secretion than CD271 negative (CD271- cells). Meanwhile, the total amount and distribution of CD271 positive cells in different ages of skin are also different, which may be related to the delayed wound healing of aging skin. Therefore, this article reviews the relationship between CD271+ cells and senile wounds and discusses a new scheme for the treatment of senile wounds.
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Affiliation(s)
- Hongqing Zhao
- Department of Plastic Surgery, Jinzhou Medical University, Jinzhou, 121001, Liaoning Province, China
- Department of Burns and Plastic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Sirui Fan
- Department of Plastic Surgery, Jinzhou Medical University, Jinzhou, 121001, Liaoning Province, China
| | - Jiachen Sun
- Department of Burns and Plastic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
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Ashour D, Rebs S, Arampatzi P, Saliba AE, Dudek J, Schulz R, Hofmann U, Frantz S, Cochain C, Streckfuß-Bömeke K, Campos Ramos G. An interferon gamma response signature links myocardial aging and immunosenescence. Cardiovasc Res 2023; 119:2458-2468. [PMID: 37141306 PMCID: PMC10651211 DOI: 10.1093/cvr/cvad068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/24/2023] [Accepted: 02/21/2023] [Indexed: 05/06/2023] Open
Abstract
AIMS Aging entails profound immunological transformations that can impact myocardial homeostasis and predispose to heart failure. However, preclinical research in the immune-cardiology field is mostly conducted in young healthy animals, which potentially weakens its translational relevance. Herein, we sought to investigate how the aging T-cell compartment associates with changes in myocardial cell biology in aged mice. METHODS AND RESULTS We phenotyped the antigen-experienced effector/memory T cells purified from heart-draining lymph nodes of 2-, 6-, 12-, and 18-month-old C57BL/6J mice using single-cell RNA/T cell receptor sequencing. Simultaneously, we profiled all non-cardiomyocyte cell subsets purified from 2- to 18-month-old hearts and integrated our data with publicly available cardiomyocyte single-cell sequencing datasets. Some of these findings were confirmed at the protein level by flow cytometry. With aging, the heart-draining lymph node and myocardial T cells underwent clonal expansion and exhibited an up-regulated pro-inflammatory transcription signature, marked by an increased interferon-γ (IFN-γ) production. In parallel, all major myocardial cell populations showed increased IFN-γ responsive signature with aging. In the aged cardiomyocytes, a stronger IFN-γ response signature was paralleled by the dampening of expression levels of transcripts related to most metabolic pathways, especially oxidative phosphorylation. Likewise, induced pluripotent stem cells-derived cardiomyocytes exposed to chronic, low grade IFN-γ treatment showed a similar inhibition of metabolic activity. CONCLUSIONS By investigating the paired age-related alterations in the T cells found in the heart and its draining lymph nodes, we provide evidence for increased myocardial IFN-γ signaling with age, which is associated with inflammatory and metabolic shifts typically seen in heart failure.
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Affiliation(s)
- DiyaaElDin Ashour
- Department of Internal Medicine I, University Hospital Würzburg, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
- Comprehensive Heart Failure Centre, University Hospital Würzburg, Am Schwarzenberg 15, 97078 Würzburg, Germany
| | - Sabine Rebs
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, 97078 Würzburg, Germany
| | - Panagiota Arampatzi
- Core Unit Systems Medicine, University of Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany
| | - Antoine-Emmanuel Saliba
- University of Würzburg, Faculty of Medicine, Institute of Molecular Infection Biology (IMIB), Josef-Schneider-Str. 2, 97080 Würzburg, Germany
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz-Centre for Infection Research (HZI), Josef-Schneider-Str. 2, 97080 Würzburg, Germany
| | - Jan Dudek
- Comprehensive Heart Failure Centre, University Hospital Würzburg, Am Schwarzenberg 15, 97078 Würzburg, Germany
| | - Richard Schulz
- Departments of Pediatrics and Pharmacology, Mazankowski Alberta Heart Institute, University of Alberta, 4-62 HMRC, 11207 87 Ave NW, Edmonton, Alberta T6G, 2S2 Canada
| | - Ulrich Hofmann
- Department of Internal Medicine I, University Hospital Würzburg, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
- Comprehensive Heart Failure Centre, University Hospital Würzburg, Am Schwarzenberg 15, 97078 Würzburg, Germany
| | - Stefan Frantz
- Department of Internal Medicine I, University Hospital Würzburg, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
- Comprehensive Heart Failure Centre, University Hospital Würzburg, Am Schwarzenberg 15, 97078 Würzburg, Germany
| | - Clément Cochain
- Comprehensive Heart Failure Centre, University Hospital Würzburg, Am Schwarzenberg 15, 97078 Würzburg, Germany
- Institute of Experimental Biomedicine, University Hospital Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany
| | - Katrin Streckfuß-Bömeke
- Institute of Pharmacology and Toxicology, University of Würzburg, Versbacher Str. 9, 97078 Würzburg, Germany
- Clinic for Cardiology and Pneumology, Georg-August University Göttingen, and DZHK (German Centre for Cardiovascular Research), Robert-Koch-Straße 40, 37075 Göttingen, Germany
| | - Gustavo Campos Ramos
- Department of Internal Medicine I, University Hospital Würzburg, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
- Comprehensive Heart Failure Centre, University Hospital Würzburg, Am Schwarzenberg 15, 97078 Würzburg, Germany
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Whelan M, Galipeau Y, White-Al Habeeb N, Konforte D, Abou El Hassan M, Booth RA, Arnold C, Langlois MA, Pelchat M. Cross-sectional Characterization of SARS-CoV-2 Antibody Levels and Decay Rates Following Infection of Unvaccinated Elderly Individuals. Open Forum Infect Dis 2023; 10:ofad384. [PMID: 37547857 PMCID: PMC10404006 DOI: 10.1093/ofid/ofad384] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/19/2023] [Indexed: 08/08/2023] Open
Abstract
Background SARS-CoV-2 infections have disproportionally burdened elderly populations with excessive mortality. While several contributing factors exists, questions remain about the quality and duration of humoral antibody-mediated responses resulting from infections in unvaccinated elderly individuals. Methods Residual serum/plasma samples were collected from individuals undergoing routine SARS-CoV-2 polymerase chain reaction testing in a community laboratory in Canada. The samples were collected in 2020, before vaccines became available. IgG, IgA, and IgM antibodies against SARS-CoV-2 nucleocapsid, trimeric spike, and its receptor-binding domain were quantified via a high-throughput chemiluminescent enzyme-linked immunosorbent assay. Neutralization efficiency was also quantified through a surrogate high-throughput protein-based neutralization assay. Results This study analyzed SARS-CoV-2 antibody levels in a large cross-sectional cohort (N = 739), enriched for elderly individuals (median age, 82 years; 75% >65 years old), where 72% of samples tested positive for SARS-CoV-2 by polymerase chain reaction. The age group ≥90 years had higher levels of antibodies than that <65 years. Neutralization efficiency showed an age-dependent trend, where older persons had higher levels of neutralizing antibodies. Antibodies targeting the nucleocapsid had the fastest decline. IgG antibodies targeting the receptor-binding domain remained stable over time, potentially explaining the lack of neutralization decay observed in this cohort. Conclusions Despite older individuals having the highest levels of antibodies postinfection, they are the cohort in which antibody decay was the fastest. Until a better understanding of correlates of protection is acquired, along with the protective role of nonneutralizing antibodies, booster vaccinations remain important in this demographic.
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Affiliation(s)
- Marilyn Whelan
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Yannick Galipeau
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | | | | | - Mohamed Abou El Hassan
- LifeLabs Medical Laboratory Services, Etobicoke, Canada
- Department of Pathology, Dalhousie University, Halifax, Canada
| | - Ronald A Booth
- Department of Pathology and Laboratory Medicine and the Eastern Ontario Regional Laboratory Association, University of Ottawa and The Ottawa Hospital, Ottawa, Canada
| | - Corey Arnold
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Marc-André Langlois
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Canada
| | - Martin Pelchat
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Canada
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Salvador AFM, Dykstra T, Rustenhoven J, Gao W, Blackburn SM, Bhasiin K, Dong MQ, Guimarães RM, Gonuguntla S, Smirnov I, Kipnis J, Herz J. Age-dependent immune and lymphatic responses after spinal cord injury. Neuron 2023; 111:2155-2169.e9. [PMID: 37148871 PMCID: PMC10523880 DOI: 10.1016/j.neuron.2023.04.011] [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: 05/24/2022] [Revised: 02/13/2023] [Accepted: 04/12/2023] [Indexed: 05/08/2023]
Abstract
Spinal cord injury (SCI) causes lifelong debilitating conditions. Previous works demonstrated the essential role of the immune system in recovery after SCI. Here, we explored the temporal changes of the response after SCI in young and aged mice in order to characterize multiple immune populations within the mammalian spinal cord. We revealed substantial infiltration of myeloid cells to the spinal cord in young animals, accompanied by changes in the activation state of microglia. In contrast, both processes were blunted in aged mice. Interestingly, we discovered the formation of meningeal lymphatic structures above the lesion site, and their role has not been examined after contusive injury. Our transcriptomic data predicted lymphangiogenic signaling between myeloid cells in the spinal cord and lymphatic endothelial cells (LECs) in the meninges after SCI. Together, our findings delineate how aging affects the immune response following SCI and highlight the participation of the spinal cord meninges in supporting vascular repair.
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Affiliation(s)
- Andrea Francesca M Salvador
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA; Neuroscience Graduate Program, University of Virginia, Charlottesville, VA 22903, USA
| | - Taitea Dykstra
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Justin Rustenhoven
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pharmacology and Clinical Pharmacology, The University of Auckland, Auckland 1023, New Zealand
| | - Wenqing Gao
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Susan M Blackburn
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Kesshni Bhasiin
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Michael Q Dong
- Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA
| | - Rafaela Mano Guimarães
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA; Center for Research in Inflammatory Diseases (CRID), Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo 14049-900, Brazil
| | - Sriharsha Gonuguntla
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Igor Smirnov
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Jonathan Kipnis
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA.
| | - Jasmin Herz
- Brain Immunology and Glia (BIG) Center, Washington University in St. Louis, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Division of Immunobiology, Washington University in St. Louis, St. Louis, MO 63110, USA.
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Hieber C, Grabbe S, Bros M. Counteracting Immunosenescence-Which Therapeutic Strategies Are Promising? Biomolecules 2023; 13:1085. [PMID: 37509121 PMCID: PMC10377144 DOI: 10.3390/biom13071085] [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: 05/02/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
Aging attenuates the overall responsiveness of the immune system to eradicate pathogens. The increased production of pro-inflammatory cytokines by innate immune cells under basal conditions, termed inflammaging, contributes to impaired innate immune responsiveness towards pathogen-mediated stimulation and limits antigen-presenting activity. Adaptive immune responses are attenuated as well due to lowered numbers of naïve lymphocytes and their impaired responsiveness towards antigen-specific stimulation. Additionally, the numbers of immunoregulatory cell types, comprising regulatory T cells and myeloid-derived suppressor cells, that inhibit the activity of innate and adaptive immune cells are elevated. This review aims to summarize our knowledge on the cellular and molecular causes of immunosenescence while also taking into account senescence effects that constitute immune evasion mechanisms in the case of chronic viral infections and cancer. For tumor therapy numerous nanoformulated drugs have been developed to overcome poor solubility of compounds and to enable cell-directed delivery in order to restore immune functions, e.g., by addressing dysregulated signaling pathways. Further, nanovaccines which efficiently address antigen-presenting cells to mount sustained anti-tumor immune responses have been clinically evaluated. Further, senolytics that selectively deplete senescent cells are being tested in a number of clinical trials. Here we discuss the potential use of such drugs to improve anti-aging therapy.
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Affiliation(s)
- Christoph Hieber
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany
| | - Stephan Grabbe
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany
| | - Matthias Bros
- Department of Dermatology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstraße 1, 55131 Mainz, Germany
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Wei YH, Bi RT, Qiu YM, Zhang CL, Li JZ, Li YN, Hu B. The gastrointestinal-brain-microbiota axis: a promising therapeutic target for ischemic stroke. Front Immunol 2023; 14:1141387. [PMID: 37342335 PMCID: PMC10277866 DOI: 10.3389/fimmu.2023.1141387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 05/22/2023] [Indexed: 06/22/2023] Open
Abstract
Ischemic stroke is a highly complex systemic disease characterized by intricate interactions between the brain and gastrointestinal tract. While our current understanding of these interactions primarily stems from experimental models, their relevance to human stroke outcomes is of considerable interest. After stroke, bidirectional communication between the brain and gastrointestinal tract initiates changes in the gastrointestinal microenvironment. These changes involve the activation of gastrointestinal immunity, disruption of the gastrointestinal barrier, and alterations in gastrointestinal microbiota. Importantly, experimental evidence suggests that these alterations facilitate the migration of gastrointestinal immune cells and cytokines across the damaged blood-brain barrier, ultimately infiltrating the ischemic brain. Although the characterization of these phenomena in humans is still limited, recognizing the significance of the brain-gastrointestinal crosstalk after stroke offers potential avenues for therapeutic intervention. By targeting the mutually reinforcing processes between the brain and gastrointestinal tract, it may be possible to improve the prognosis of ischemic stroke. Further investigation is warranted to elucidate the clinical relevance and translational potential of these findings.
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Affiliation(s)
| | | | | | | | | | - Ya-nan Li
- *Correspondence: Ya-nan Li, ; Bo Hu,
| | - Bo Hu
- *Correspondence: Ya-nan Li, ; Bo Hu,
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10
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Amini N, Hivechi A, Asadpour S, Ebrahimzadeh K, Kargozar S, Gholipourmalekabadi M, Nasrolahi A, Ghasemian M, Shafaat A, Mozafari M, Brouki Milan P, Rezapour A. Fabrication and characterization of bilayer scaffolds made of decellularized dermis/nanofibrous collagen for healing of full-thickness wounds. Drug Deliv Transl Res 2023; 13:1766-1779. [PMID: 36701113 DOI: 10.1007/s13346-023-01292-0] [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] [Accepted: 01/04/2023] [Indexed: 01/27/2023]
Abstract
Skin tissue engineering has progressed from simple wound dressings to biocompatible materials with desired physico-chemical properties that can deliver regenerative biomolecules. This study describes using a novel biomimetic hybrid scaffold of decellularized dermis/collagen fibers that can continuously deliver stromal cell-derived factor-1 alpha (SDF-1α) for skin regeneration. In diabetic rat models, the idea that sustained SDF-1α infusion could increase the recruitment of CXCR4-positive cells at the injury site and improve wound regeneration was investigated. The morphology of the scaffold, its biocompatibility, and the kinetics of SDF-1 release were all assessed. SDF-1α was successfully incorporated into collagen nanofibers, resulting in a 200-h continuous release profile. The microscopic observations exhibited that cells are attached and proliferated on proposed scaffolds. As evaluated by in vivo study and histological examination, fabricated scaffold with SDF-1α release capacity exhibited a remarkably more robust ability to accelerate wound regeneration than the control group. Besides, the SDF-1α-loaded scaffold demonstrated functional effects on the proliferation and recruitment of CD31 and CXCR4-positive cells in the wound bed. Additionally, no adverse effects such as hyperplasia or scarring were found during the treatment period. It may be concluded that the fabricated hybrid scaffold based on natural polymer opens up a new option for topical administration of bioactive molecules. We believe the SDF-1α-loaded hybrid scaffold has promise for skin tissue engineering.
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Affiliation(s)
- Naser Amini
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, Iran
| | - Ahmad Hivechi
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, Iran
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Shiva Asadpour
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Kaveh Ebrahimzadeh
- Department of Neurosurgery, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeid Kargozar
- Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mazaher Gholipourmalekabadi
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, Iran
- Department of Medical Biotechnology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ahvan Nasrolahi
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, Iran
| | - Melina Ghasemian
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Shafaat
- Department of Mechanical Engineering, Arak University of Technology, Arak, Iran
| | - Masoud Mozafari
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, ON, Canada
| | - Peiman Brouki Milan
- Cellular and Molecular Research Centre, Iran University of Medical Sciences, Tehran, Iran.
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Alireza Rezapour
- Cellular and Molecular Research Centre, Qom University of Medical Sciences, Qom, Iran.
- Department of Tissue Engineering and Regenerative Medicine, School of Medicine, Qom University of Medical Sciences, Qom, Iran.
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11
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Bao H, Cao J, Chen M, Chen M, Chen W, Chen X, Chen Y, Chen Y, Chen Y, Chen Z, Chhetri JK, Ding Y, Feng J, Guo J, Guo M, He C, Jia Y, Jiang H, Jing Y, Li D, Li J, Li J, Liang Q, Liang R, Liu F, Liu X, Liu Z, Luo OJ, Lv J, Ma J, Mao K, Nie J, Qiao X, Sun X, Tang X, Wang J, Wang Q, Wang S, Wang X, Wang Y, Wang Y, Wu R, Xia K, Xiao FH, Xu L, Xu Y, Yan H, Yang L, Yang R, Yang Y, Ying Y, Zhang L, Zhang W, Zhang W, Zhang X, Zhang Z, Zhou M, Zhou R, Zhu Q, Zhu Z, Cao F, Cao Z, Chan P, Chen C, Chen G, Chen HZ, Chen J, Ci W, Ding BS, Ding Q, Gao F, Han JDJ, Huang K, Ju Z, Kong QP, Li J, Li J, Li X, Liu B, Liu F, Liu L, Liu Q, Liu Q, Liu X, Liu Y, Luo X, Ma S, Ma X, Mao Z, Nie J, Peng Y, Qu J, Ren J, Ren R, Song M, Songyang Z, Sun YE, Sun Y, Tian M, Wang S, Wang S, Wang X, Wang X, Wang YJ, Wang Y, Wong CCL, Xiang AP, Xiao Y, Xie Z, Xu D, Ye J, Yue R, Zhang C, Zhang H, Zhang L, Zhang W, Zhang Y, Zhang YW, Zhang Z, Zhao T, Zhao Y, Zhu D, Zou W, Pei G, Liu GH. Biomarkers of aging. SCIENCE CHINA. LIFE SCIENCES 2023; 66:893-1066. [PMID: 37076725 PMCID: PMC10115486 DOI: 10.1007/s11427-023-2305-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 02/27/2023] [Indexed: 04/21/2023]
Abstract
Aging biomarkers are a combination of biological parameters to (i) assess age-related changes, (ii) track the physiological aging process, and (iii) predict the transition into a pathological status. Although a broad spectrum of aging biomarkers has been developed, their potential uses and limitations remain poorly characterized. An immediate goal of biomarkers is to help us answer the following three fundamental questions in aging research: How old are we? Why do we get old? And how can we age slower? This review aims to address this need. Here, we summarize our current knowledge of biomarkers developed for cellular, organ, and organismal levels of aging, comprising six pillars: physiological characteristics, medical imaging, histological features, cellular alterations, molecular changes, and secretory factors. To fulfill all these requisites, we propose that aging biomarkers should qualify for being specific, systemic, and clinically relevant.
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Affiliation(s)
- Hainan Bao
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China
| | - Jiani Cao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Mengting Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China
- Hunan Key Laboratory of Aging Biology, Xiangya Hospital, Central South University, Changsha, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Min Chen
- Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Clinical Research Center of Metabolic and Cardiovascular Disease, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Key Laboratory of Metabolic Abnormalities and Vascular Aging, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Wei Chen
- Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, China
| | - Xiao Chen
- Department of Nuclear Medicine, Daping Hospital, Third Military Medical University, Chongqing, 400042, China
| | - Yanhao Chen
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yu Chen
- Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Yutian Chen
- The Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Zhiyang Chen
- Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Ageing and Regenerative Medicine, Jinan University, Guangzhou, 510632, China
| | - Jagadish K Chhetri
- National Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Yingjie Ding
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Junlin Feng
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Jun Guo
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730, China
| | - Mengmeng Guo
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China
| | - Chuting He
- University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China
| | - Yujuan Jia
- Department of Neurology, First Affiliated Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - Haiping Jiang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China
| | - Ying Jing
- Beijing Municipal Geriatric Medical Research Center, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
- Aging Translational Medicine Center, International Center for Aging and Cancer, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
- Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
| | - Dingfeng Li
- Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230036, China
| | - Jiaming Li
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jingyi Li
- University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China
| | - Qinhao Liang
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, 430072, China
| | - Rui Liang
- Research Institute of Transplant Medicine, Organ Transplant Center, NHC Key Laboratory for Critical Care Medicine, Tianjin First Central Hospital, Nankai University, Tianjin, 300384, China
| | - Feng Liu
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Institute of Healthy Aging Research, Sun Yat-sen University, Guangzhou, 510275, China
| | - Xiaoqian Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China
| | - Zuojun Liu
- School of Life Sciences, Hainan University, Haikou, 570228, China
| | - Oscar Junhong Luo
- Department of Systems Biomedical Sciences, School of Medicine, Jinan University, Guangzhou, 510632, China
| | - Jianwei Lv
- School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Jingyi Ma
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Kehang Mao
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China
| | - Jiawei Nie
- Shanghai Institute of Hematology, State Key Laboratory for Medical Genomics, National Research Center for Translational Medicine (Shanghai), International Center for Aging and Cancer, Collaborative Innovation Center of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xinhua Qiao
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xinpei Sun
- Peking University International Cancer Institute, Health Science Center, Peking University, Beijing, 100101, China
| | - Xiaoqiang Tang
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, 610041, China
| | - Jianfang Wang
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Qiaoran Wang
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Siyuan Wang
- Clinical Research Institute, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China
| | - Xuan Wang
- Hepatobiliary and Pancreatic Center, Medical Research Center, Beijing Tsinghua Changgung Hospital, Beijing, 102218, China
| | - Yaning Wang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
- Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Yuhan Wang
- University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China
| | - Rimo Wu
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Kai Xia
- Center for Stem Cell Biologyand Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, China
- National-Local Joint Engineering Research Center for Stem Cells and Regenerative Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Fu-Hui Xiao
- CAS Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, 650223, China
- State Key Laboratory of Genetic Resources and Evolution, Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Key Laboratory of Healthy Aging Study, KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China
| | - Lingyan Xu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China
| | - Yingying Xu
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China
| | - Haoteng Yan
- Beijing Municipal Geriatric Medical Research Center, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
- Aging Translational Medicine Center, International Center for Aging and Cancer, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
- Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China
| | - Liang Yang
- CAS Key Laboratory of Regenerative Biology, Joint School of Life Sciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou Medical University, Guangzhou, 510530, China
| | - Ruici Yang
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yuanxin Yang
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Yilin Ying
- Department of Geriatrics, Medical Center on Aging of Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
- International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital, Shanghai, 200025, China
| | - Le Zhang
- Gerontology Center of Hubei Province, Wuhan, 430000, China
- Institute of Gerontology, Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Weiwei Zhang
- Department of Cardiology, The Second Medical Centre, Chinese PLA General Hospital, National Clinical Research Center for Geriatric Diseases, Beijing, 100853, China
| | - Wenwan Zhang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Xing Zhang
- Key Laboratory of Ministry of Education, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhuo Zhang
- Optogenetics & Synthetic Biology Interdisciplinary Research Center, State Key Laboratory of Bioreactor Engineering, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
- Research Unit of New Techniques for Live-cell Metabolic Imaging, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Min Zhou
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, 410008, China
| | - Rui Zhou
- Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, China
| | - Qingchen Zhu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Zhengmao Zhu
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin, 300071, China
- Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Feng Cao
- Department of Cardiology, The Second Medical Centre, Chinese PLA General Hospital, National Clinical Research Center for Geriatric Diseases, Beijing, 100853, China.
| | - Zhongwei Cao
- State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, 610041, China.
| | - Piu Chan
- National Clinical Research Center for Geriatric Diseases, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
| | - Chang Chen
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Guobing Chen
- Department of Microbiology and Immunology, School of Medicine, Jinan University, Guangzhou, 510632, China.
- Guangdong-Hong Kong-Macau Great Bay Area Geroscience Joint Laboratory, Guangzhou, 510000, China.
| | - Hou-Zao Chen
- Department of Biochemistryand Molecular Biology, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100005, China.
| | - Jun Chen
- Peking University Research Center on Aging, Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function, Department of Biochemistry and Molecular Biology, Department of Integration of Chinese and Western Medicine, School of Basic Medical Science, Peking University, Beijing, 100191, China.
| | - Weimin Ci
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China.
| | - Bi-Sen Ding
- State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan University, Chengdu, 610041, China.
| | - Qiurong Ding
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Feng Gao
- Key Laboratory of Ministry of Education, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, 710032, China.
| | - Jing-Dong J Han
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China.
| | - Kai Huang
- Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
- Hubei Clinical Research Center of Metabolic and Cardiovascular Disease, Huazhong University of Science and Technology, Wuhan, 430022, China.
- Hubei Key Laboratory of Metabolic Abnormalities and Vascular Aging, Huazhong University of Science and Technology, Wuhan, 430022, China.
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Zhenyu Ju
- Key Laboratory of Regenerative Medicine of Ministry of Education, Institute of Ageing and Regenerative Medicine, Jinan University, Guangzhou, 510632, China.
| | - Qing-Peng Kong
- CAS Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, 650223, China.
- State Key Laboratory of Genetic Resources and Evolution, Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Key Laboratory of Healthy Aging Study, KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, 650223, China.
| | - Ji Li
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China.
- Hunan Key Laboratory of Aging Biology, Xiangya Hospital, Central South University, Changsha, 410008, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China.
| | - Jian Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730, China.
| | - Xin Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
| | - Baohua Liu
- School of Basic Medical Sciences, Shenzhen University Medical School, Shenzhen, 518060, China.
| | - Feng Liu
- Metabolic Syndrome Research Center, The Second Xiangya Hospital, Central South Unversity, Changsha, 410011, China.
| | - Lin Liu
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin, 300071, China.
- Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China.
- Institute of Translational Medicine, Tianjin Union Medical Center, Nankai University, Tianjin, 300000, China.
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China.
| | - Qiang Liu
- Department of Neurology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230036, China.
| | - Qiang Liu
- Department of Neurology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China.
- Tianjin Institute of Immunology, Tianjin Medical University, Tianjin, 300070, China.
| | - Xingguo Liu
- CAS Key Laboratory of Regenerative Biology, Joint School of Life Sciences, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou Medical University, Guangzhou, 510530, China.
| | - Yong Liu
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, 430072, China.
| | - Xianghang Luo
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, 410008, China.
| | - Shuai Ma
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
| | - Xinran Ma
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, 200241, China.
| | - Zhiyong Mao
- Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
| | - Jing Nie
- The State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Yaojin Peng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
| | - Jing Qu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
| | - Jie Ren
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Ruibao Ren
- Shanghai Institute of Hematology, State Key Laboratory for Medical Genomics, National Research Center for Translational Medicine (Shanghai), International Center for Aging and Cancer, Collaborative Innovation Center of Hematology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- International Center for Aging and Cancer, Hainan Medical University, Haikou, 571199, China.
| | - Moshi Song
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
| | - Zhou Songyang
- MOE Key Laboratory of Gene Function and Regulation, Guangzhou Key Laboratory of Healthy Aging Research, School of Life Sciences, Institute of Healthy Aging Research, Sun Yat-sen University, Guangzhou, 510275, China.
- Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.
| | - Yi Eve Sun
- Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, China.
| | - Yu Sun
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, 200031, China.
- Department of Medicine and VAPSHCS, University of Washington, Seattle, WA, 98195, USA.
| | - Mei Tian
- Human Phenome Institute, Fudan University, Shanghai, 201203, China.
| | - Shusen Wang
- Research Institute of Transplant Medicine, Organ Transplant Center, NHC Key Laboratory for Critical Care Medicine, Tianjin First Central Hospital, Nankai University, Tianjin, 300384, China.
| | - Si Wang
- Beijing Municipal Geriatric Medical Research Center, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
- Aging Translational Medicine Center, International Center for Aging and Cancer, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
- Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China.
| | - Xia Wang
- School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
| | - Xiaoning Wang
- Institute of Geriatrics, The second Medical Center, Beijing Key Laboratory of Aging and Geriatrics, National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing, 100853, China.
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, 400042, China.
| | - Yunfang Wang
- Hepatobiliary and Pancreatic Center, Medical Research Center, Beijing Tsinghua Changgung Hospital, Beijing, 102218, China.
| | - Catherine C L Wong
- Clinical Research Institute, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, 100730, China.
| | - Andy Peng Xiang
- Center for Stem Cell Biologyand Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou, 510080, China.
- National-Local Joint Engineering Research Center for Stem Cells and Regenerative Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Yichuan Xiao
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Zhengwei Xie
- Peking University International Cancer Institute, Health Science Center, Peking University, Beijing, 100101, China.
- Beijing & Qingdao Langu Pharmaceutical R&D Platform, Beijing Gigaceuticals Tech. Co. Ltd., Beijing, 100101, China.
| | - Daichao Xu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China.
| | - Jing Ye
- Department of Geriatrics, Medical Center on Aging of Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
- International Laboratory in Hematology and Cancer, Shanghai Jiao Tong University School of Medicine/Ruijin Hospital, Shanghai, 200025, China.
| | - Rui Yue
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
| | - Cuntai Zhang
- Gerontology Center of Hubei Province, Wuhan, 430000, China.
- Institute of Gerontology, Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Hongbo Zhang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
- Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Liang Zhang
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, 200031, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Weiqi Zhang
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Yong Zhang
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China.
- The State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, 100005, China.
| | - Yun-Wu Zhang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, 361102, China.
| | - Zhuohua Zhang
- Key Laboratory of Molecular Precision Medicine of Hunan Province and Center for Medical Genetics, Institute of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha, 410078, China.
- Department of Neurosciences, Hengyang Medical School, University of South China, Hengyang, 421001, China.
| | - Tongbiao Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
| | - Yuzheng Zhao
- Optogenetics & Synthetic Biology Interdisciplinary Research Center, State Key Laboratory of Bioreactor Engineering, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
- Research Unit of New Techniques for Live-cell Metabolic Imaging, Chinese Academy of Medical Sciences, Beijing, 100730, China.
| | - Dahai Zhu
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China.
- The State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, 100005, China.
| | - Weiguo Zou
- State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Gang Pei
- Shanghai Key Laboratory of Signaling and Disease Research, Laboratory of Receptor-Based Biomedicine, The Collaborative Innovation Center for Brain Science, School of Life Sciences and Technology, Tongji University, Shanghai, 200070, China.
| | - Guang-Hui Liu
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
- Advanced Innovation Center for Human Brain Protection, and National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital Capital Medical University, Beijing, 100053, China.
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12
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Bleve A, Motta F, Durante B, Pandolfo C, Selmi C, Sica A. Immunosenescence, Inflammaging, and Frailty: Role of Myeloid Cells in Age-Related Diseases. Clin Rev Allergy Immunol 2023; 64:123-144. [PMID: 35031957 PMCID: PMC8760106 DOI: 10.1007/s12016-021-08909-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2021] [Indexed: 12/20/2022]
Abstract
The immune system is the central regulator of tissue homeostasis, ensuring tissue regeneration and protection against both pathogens and the neoformation of cancer cells. Its proper functioning requires homeostatic properties, which are maintained by an adequate balance of myeloid and lymphoid responses. Aging progressively undermines this ability and compromises the correct activation of immune responses, as well as the resolution of the inflammatory response. A subclinical syndrome of "homeostatic frailty" appears as a distinctive trait of the elderly, which predisposes to immune debilitation and chronic low-grade inflammation (inflammaging), causing the uncontrolled development of chronic and degenerative diseases. The innate immune compartment, in particular, undergoes to a sequela of age-dependent functional alterations, encompassing steps of myeloid progenitor differentiation and altered responses to endogenous and exogenous threats. Here, we will review the age-dependent evolution of myeloid populations, as well as their impact on frailty and diseases of the elderly.
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Affiliation(s)
- Augusto Bleve
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy
| | - Francesca Motta
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center- IRCCS, via Manzoni 56, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072, Pieve Emanuele, Milan, Italy
| | - Barbara Durante
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy
| | - Chiara Pandolfo
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy
| | - Carlo Selmi
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center- IRCCS, via Manzoni 56, Rozzano, Milan, Italy.
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072, Pieve Emanuele, Milan, Italy.
| | - Antonio Sica
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Largo Donegani, via Bovio 6, 2 - 28100, Novara, Italy.
- Humanitas Clinical and Research Center - IRCCS, via Manzoni 56, 20089, Rozzano, Milan, Italy.
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13
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Scutera S, Sparti R, Comini S, Menotti F, Musso T, Cuffini AM, Allizond V, Banche G. Dalbavancin Boosts the Ability of Neutrophils to Fight Methicillin-Resistant Staphylococcus aureus. Int J Mol Sci 2023; 24:ijms24032541. [PMID: 36768864 PMCID: PMC9917267 DOI: 10.3390/ijms24032541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/18/2023] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
Polymorphonuclear leukocytes (PMNs) are the most important cell type involved in the early nonspecific host response to bacterial pathogens. Staphylococcus aureus has evolved mechanisms to evade immune responses that contribute to its persistence in PMNs, and acquired resistance to several antimicrobials. Additionally, methicillin-resistant S. aureus (MRSA) is one of the most common causes of acute bacterial skin and skin-structure infections (ABSSSIs). Dalbavancin (DBV), a lipoglycopeptide, is indicated for the treatment of ABSSSIs, and has a broad spectrum of action against most microorganisms. Here, we sought to determine the effect of DBV on the neutrophil killing of MRSA and its potential immunomodulating activity. Our results revealed that DBV boosts MRSA killing by acting on both bacteria and PMNs. DBV pre-treatment of PMNs did not change the respiratory burst or degranulation, while an increased trend in neutrophil extracellular traps-associated elastase and in the production of TNFα and CXCL8 was revealed. In parallel, DBV caused a delay in the apoptosis of MRSA-infected neutrophils. In conclusion, we demonstrated a cooperative effect between the antimicrobial properties of PMNs and DBV, thus owing to their immunomodulatory activity. In the choice of the treatment management of serious S. aureus infections, DBV should be considered as an outstanding option since it reinforces PMNs pathogen clearance capability by exerting its effect directly, not only on MRSA but also on neutrophils.
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14
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Cheng W, Zhao Q, Li C, Xu Y. Neuroinflammation and brain-peripheral interaction in ischemic stroke: A narrative review. Front Immunol 2023; 13:1080737. [PMID: 36685518 PMCID: PMC9849888 DOI: 10.3389/fimmu.2022.1080737] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/12/2022] [Indexed: 01/07/2023] Open
Abstract
Excessive immune activation within the lesion site can be observed after stroke onset. Such neuroinflammation within the brain parenchyma represents the innate immune response, as well as the result of the additional interactions between peripheral and resident immune cells. Accumulative studies have illustrated that the pathological process of ischemic stroke is associated with resident and peripheral immunity. The infiltration of peripheral immune cells within the brain parenchyma implicitly contributes to secondary brain injuries. Therefore, better understanding of the roles of resident and peripheral immune reactions toward ischemic insult is necessary. In this review, we summarized the interaction between peripheral and resident immunity on systemic immunity and the clinical outcomes after stroke onset and also discussed various potential immunotherapeutic strategies.
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Affiliation(s)
- Wenjing Cheng
- Department of Laboratory Medicine, Linping Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, Zhejiang, China,*Correspondence: Wenjing Cheng,
| | - Qing Zhao
- Center for Translational Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Chengzhen Li
- Department of Laboratory Medicine, Shanghai Guanghua Hospital of Integrated Traditional Chinese and Western Medicine, Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yunzhi Xu
- Department of Laboratory Medicine, Wenzhou Central Hospital, Affiliated Dingli Clinical Institute of Wenzhou Medical University, Wenzhou, China
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15
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Boe DM, Hulsebus HJ, Najarro KM, Mullen JE, Kim H, Tan AC, McMahan RH, Kovacs EJ. Advanced age is associated with changes in alveolar macrophages and their responses to the stress of traumatic injury. J Leukoc Biol 2022; 112:1371-1386. [PMID: 36120937 PMCID: PMC10150914 DOI: 10.1002/jlb.3hi0620-399rr] [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: 06/18/2020] [Revised: 08/14/2022] [Indexed: 01/04/2023] Open
Abstract
Alveolar macrophages (AMs) are tissue-resident cells of the lower airways that perform many homeostatic functions critical for pulmonary health and protection against pathogens. However, little is known about the factors that shape AMs during healthy aging. In these studies, we sought to characterize age-related changes in AM phenotype, function, and responses to a physiologic stressor, that is, distal injury. Age was associated with a wide range of changes in cell surface receptor and gene expression by AMs, reflecting a unique alternatively activated phenotype. AMs from aged mice also exhibited markers of cellular senescence along with down-regulation of genes involved in growth and cell cycle pathways relative to young controls. Furthermore, AMs from aged mice showed a stunted transcriptional response to distal injury compared with AMs from young mice. Many changes were found to involve glucocorticoid-regulated genes, and corticosteroid treatment of primary AMs ex vivo revealed diminished transcriptional responses in cells from aged animals. These results demonstrate that there is a complex age-dependent AM phenotype associated with dysregulated stress hormone signaling that may interfere with AM responses to physiologic stressors and could contribute to AM dysfunction and the decline of pulmonary immunity during healthy aging.
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Affiliation(s)
- Devin M. Boe
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Holly J. Hulsebus
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kevin M. Najarro
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Juliet E. Mullen
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Hyunmin Kim
- Department of Biostatistics and Bioinformatics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Aik Choon Tan
- Department of Biostatistics and Bioinformatics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Biostatistics and Bioinformatics, Moffitt Cancer Center, Tampa, FL, USA
| | - Rachel H. McMahan
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Elizabeth J. Kovacs
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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16
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Van Avondt K, Strecker J, Tulotta C, Minnerup J, Schulz C, Soehnlein O. Neutrophils in aging and aging‐related pathologies. Immunol Rev 2022; 314:357-375. [PMID: 36315403 DOI: 10.1111/imr.13153] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Over the past millennia, life expectancy has drastically increased. While a mere 25 years during Bronze and Iron ages, life expectancy in many European countries and in Japan is currently above 80 years. Such an increase in life expectancy is a result of improved diet, life style, and medical care. Yet, increased life span and aging also represent the most important non-modifiable risk factors for several pathologies including cardiovascular disease, neurodegenerative diseases, and cancer. In recent years, neutrophils have been implicated in all of these pathologies. Hence, this review provides an overview of how aging impacts neutrophil production and function and conversely how neutrophils drive aging-associated pathologies. Finally, we provide a perspective on how processes of neutrophil-driven pathologies in the context of aging can be targeted therapeutically.
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Affiliation(s)
- Kristof Van Avondt
- Institute of Experimental Pathology (ExPat), Centre of Molecular Biology of Inflammation (ZMBE) University of Münster Münster Germany
| | - Jan‐Kolja Strecker
- Department of Neurology with Institute of Translational Neurology University Hospital Münster Münster Germany
| | - Claudia Tulotta
- Institute of Experimental Pathology (ExPat), Centre of Molecular Biology of Inflammation (ZMBE) University of Münster Münster Germany
| | - Jens Minnerup
- Department of Neurology with Institute of Translational Neurology University Hospital Münster Münster Germany
| | - Christian Schulz
- Department of Medicine I University Hospital, Ludwig Maximilian University Munich Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance Munich Germany
| | - Oliver Soehnlein
- Institute of Experimental Pathology (ExPat), Centre of Molecular Biology of Inflammation (ZMBE) University of Münster Münster Germany
- Department of Physiology and Pharmacology (FyFa) Karolinska Institute Stockholm Sweden
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17
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Saito S, Okuno A, Maekawa T, Kobayashi R, Yamashita O, Tsujimura N, Inaba M, Kageyama Y, Tsuji NM. Lymphocyte antigen 6 complex locus G6D downregulation is a novel parameter for functional impairment of neutrophils in aged mice. Front Immunol 2022; 13:1001179. [PMID: 36389807 PMCID: PMC9647080 DOI: 10.3389/fimmu.2022.1001179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/05/2022] [Indexed: 12/02/2022] Open
Abstract
Immunological aging is a critical event that causes serious functional impairment in the innate immune system. However, the identification markers and parameters are still poorly understood in immunological aging of myeloid lineage cells. Here, we show that a downregulation of lymphocyte antigen 6 complex locus G6D (Ly-6G) observed in aged mouse neutrophils could serve as a novel marker for the prediction of age-associated functional impairment in the neutrophils. Ly-6G expression was significantly downregulated in the bone marrow (BM) neutrophils of aged mice compared to young mice confirmed by flow cytometry analysis. In vitro experiments using BM-isolated neutrophils showed significant downregulations in their activities, such as phagocytosis, reactive oxygen species (ROS) production, interleukin (IL)-1β production, neutrophil extracellular trap (NET) formation, and migration as well as bacterial clearance, in the aged mouse neutrophils compared to those of young mice counterparts. Interestingly, the magnitudes of functional parameters were strongly correlated with the Ly-6G expression in the neutrophils. Thus, our results suggest that downregulation of Ly-6G reflects the age-associated functional attenuation of the neutrophils.
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Affiliation(s)
- Suguru Saito
- Division of Cellular and Molecular Engineering, Department of Life Technology and Science, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
- Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
- *Correspondence: Suguru Saito, ; ; Noriko M. Tsuji, ;
| | - Alato Okuno
- Division of Cellular and Molecular Engineering, Department of Life Technology and Science, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- Department of Health and Nutrition, Faculty of Human Design, Shibata Gakuen University, Aomori, Japan
| | - Toshio Maekawa
- Division of Cellular and Molecular Engineering, Department of Life Technology and Science, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- Division of Immune Homeostasis, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
- iFoodMed Inc., Tsuchiura, Japan
| | - Ryoki Kobayashi
- Division of Cellular and Molecular Engineering, Department of Life Technology and Science, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- Division of Immune Homeostasis, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
- iFoodMed Inc., Tsuchiura, Japan
- Division of Microbiology and Immunology, Department of Infection and Immunology, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
| | - Osamu Yamashita
- Technical Service Department, CLEA Japan, Inc., Tokyo, Japan
| | | | - Morihiko Inaba
- Tokyo Animal and Diet Department, CLEA Japan, Inc., Tokyo, Japan
| | - Yasushi Kageyama
- Tokyo Animal and Diet Department, CLEA Japan, Inc., Tokyo, Japan
| | - Noriko M. Tsuji
- Division of Cellular and Molecular Engineering, Department of Life Technology and Science, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
- Division of Immune Homeostasis, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
- Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
- iFoodMed Inc., Tsuchiura, Japan
- Department of Food Science, Jumonji University, Niiza, Japan
- *Correspondence: Suguru Saito, ; ; Noriko M. Tsuji, ;
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18
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Lecron JC, Charreau S, Jégou JF, Salhi N, Petit-Paris I, Guignouard E, Burucoa C, Favot-Laforge L, Bodet C, Barra A, Huguier V, Mcheik J, Dumoutier L, Garnier J, Bernard FX, Ryffel B, Morel F. IL-17 and IL-22 are pivotal cytokines to delay wound healing of S. aureus and P. aeruginosa infected skin. Front Immunol 2022; 13:984016. [PMID: 36275755 PMCID: PMC9585169 DOI: 10.3389/fimmu.2022.984016] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
IntroductionAlthough the presence of pathogens in skin wounds is known to delay the wound healing process, the mechanisms underlying this delay remain poorly understood. In the present study, we have investigated the regulatory role of proinflammatory cytokines on the healing kinetics of infected wounds.MethodsWe have developed a mouse model of cutaneous wound healing, with or without wound inoculation with Staphylococcus aureus and Pseudomonas aeruginosa, two major pathogens involved in cutaneous wound bacterial infections.ResultsAseptic excision in C57BL/6 mouse skin induced early expression of IL-1β, TNFα and Oncostatin M (OSM), without detectable expression of IL-22 and IL-17A/F. S. aureus and P. aeruginosa wound inoculation not only increased the expression of IL-1β and OSM, but also induced a strong cutaneous expression of IL-22, IL-17A and IL-17F, along with an increased number of infiltrating IL-17A and/or IL-22-producing γδ T cells. The same cytokine expression pattern was observed in infected human skin wounds. When compared to uninfected wounds, mouse skin infection delayed the wound healing process. Injection of IL-1α, TNFα, OSM, IL-22 and IL-17 together in the wound edges induced delayed wound healing similar to that induced by the bacterial infection. Wound healing experiments in infected Rag2KO mice (deficient in lymphocytes) showed a wound healing kinetic similar to uninfected Rag2KO mice or WT mice. Rag2KO infected-skin lesions expressed lower levels of IL-17 and IL-22 than WT, suggesting that the expression of these cytokines is mainly dependent on γδ T cells in this model. Wound healing was not delayed in infected IL-17R/IL-22KO, comparable to uninfected control mice. Injection of recombinant IL-22 and IL-17 in infected wound edges of Rag2KO mice re-establish the delayed kinetic of wound healing, as in infected WT mice.ConclusionThese results demonstrate the synergistic and specific effects of IL-22 and IL-17 induced by bacterial infection delay the wound healing process, regardless of the presence of bacteria per se. Therefore, these cytokines play an unexpected role in delayed skin wound healing.
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Affiliation(s)
- Jean-Claude Lecron
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Laboratoire Immunologie et Inflammation, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
- *Correspondence: Jean-Claude Lecron,
| | - Sandrine Charreau
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Qima-Bioalternatives (Qima Life Sciences), Gençay, France
| | - Jean-François Jégou
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Nadjet Salhi
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Isabelle Petit-Paris
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Emmanuel Guignouard
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Christophe Burucoa
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Laboratoire de Bactériologie, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
| | - Laure Favot-Laforge
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Anne Barra
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Laboratoire Immunologie et Inflammation, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
| | - Vincent Huguier
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Service de Chirurgie Plastique, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
| | - Jiad Mcheik
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Service de Chirurgie Pédiatrique, Centre Hospitalier et Universitaire CHU) de Poitiers, Poitiers, France
| | - Laure Dumoutier
- De Duve Institute, Université catholique de Louvain, Brussels, Belgium
| | - Julien Garnier
- Qima-Bioalternatives (Qima Life Sciences), Gençay, France
| | - François-Xavier Bernard
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Qima-Bioalternatives (Qima Life Sciences), Gençay, France
| | - Bernhard Ryffel
- Laboratoire d'Immunologie et Neurogénétique Expérimentales et Moléculaire (INEM) - Unité Mixte de Recherche (UMR) 7355, Centre National de la Recherche Scientifique (CNRS) et Université d’Orléans, Orléans, France
| | - Franck Morel
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
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19
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Marrella V, Facoetti A, Cassani B. Cellular Senescence in Immunity against Infections. Int J Mol Sci 2022; 23:ijms231911845. [PMID: 36233146 PMCID: PMC9570409 DOI: 10.3390/ijms231911845] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
Cellular senescence is characterized by irreversible cell cycle arrest in response to different triggers and an inflammatory secretome. Although originally described in fibroblasts and cell types of solid organs, cellular senescence affects most tissues with advancing age, including the lymphoid tissue, causing chronic inflammation and dysregulation of both innate and adaptive immune functions. Besides its normal occurrence, persistent microbial challenge or pathogenic microorganisms might also accelerate the activation of cellular aging, inducing the premature senescence of immune cells. Therapeutic strategies counteracting the detrimental effects of cellular senescence are being developed. Their application to target immune cells might have the potential to improve immune dysfunctions during aging and reduce the age-dependent susceptibility to infections. In this review, we discuss how immune senescence influences the host’s ability to resolve more common infections in the elderly and detail the different markers proposed to identify such senescent cells; the mechanisms by which infectious agents increase the extent of immune senescence are also reviewed. Finally, available senescence therapeutics are discussed in the context of their effects on immunity and against infections.
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Affiliation(s)
- Veronica Marrella
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, 20138 Milan, Italy
- IRCCS Humanitas Research Hospital, 20089 Milan, Italy
| | - Amanda Facoetti
- Department of Biomedical Sciences, Humanitas University, 20090 Milan, Italy
| | - Barbara Cassani
- IRCCS Humanitas Research Hospital, 20089 Milan, Italy
- Department of Medical Biotechnologies and Translational Medicine, Università Degli Studi di Milano, 20089 Milan, Italy
- Correspondence:
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20
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Hornigold K, Chu JY, Chetwynd SA, Machin PA, Crossland L, Pantarelli C, Anderson KE, Hawkins PT, Segonds-Pichon A, Oxley D, Welch HCE. Age-related decline in the resistance of mice to bacterial infection and in LPS/TLR4 pathway-dependent neutrophil responses. Front Immunol 2022; 13:888415. [PMID: 36090969 PMCID: PMC9450589 DOI: 10.3389/fimmu.2022.888415] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 08/02/2022] [Indexed: 11/23/2022] Open
Abstract
Host defense against bacterial and fungal infections diminishes with age. In humans, impaired neutrophil responses are thought to contribute to this decline. However, it remains unclear whether neutrophil responses are also impaired in old mice. Here, we investigated neutrophil function in old mice, focusing on responses primed by lipopolysaccharide (LPS), an endotoxin released by gram-negative bacteria like E. coli, which signals through toll-like receptor (TLR) 4. We show that old mice have a reduced capacity to clear pathogenic E. coli during septic peritonitis. Neutrophil recruitment was elevated during LPS-induced but not aseptic peritonitis. Neutrophils from old mice showed reduced killing of E. coli. Their reactive oxygen species (ROS) production was impaired upon priming with LPS but not with GM-CSF/TNFα. Phagocytosis and degranulation were reduced in a partially LPS-dependent manner, whereas impairment of NET release in response to S. aureus was independent of LPS. Unexpectedly, chemotaxis was normal, as were Rac1 and Rac2 GTPase activities. LPS-primed activation of Erk and p38 Mapk was defective. PIP3 production was reduced upon priming with LPS but not with GM-CSF/TNFα, whereas PIP2 levels were constitutively low. The expression of 5% of neutrophil proteins was dysregulated in old age. Granule proteins, particularly cathepsins and serpins, as well as TLR-pathway proteins and membrane receptors were upregulated, whereas chromatin and RNA regulators were downregulated. The upregulation of CD180 and downregulation of MyD88 likely contribute to the impaired LPS signaling. In summary, all major neutrophil responses except chemotaxis decline with age in mice, particularly upon LPS priming. This LPS/TLR4 pathway dependence resolves previous controversy regarding effects of age on murine neutrophils and confirms that mice are an appropriate model for the decline in human neutrophil function.
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Affiliation(s)
- Kirsti Hornigold
- Signalling Programme, The Babraham Institute, Cambridge, United Kingdom
| | - Julia Y. Chu
- Signalling Programme, The Babraham Institute, Cambridge, United Kingdom
| | | | - Polly A. Machin
- Signalling Programme, The Babraham Institute, Cambridge, United Kingdom
| | - Laraine Crossland
- Signalling Programme, The Babraham Institute, Cambridge, United Kingdom
| | - Chiara Pantarelli
- Signalling Programme, The Babraham Institute, Cambridge, United Kingdom
| | - Karen E. Anderson
- Signalling Programme, The Babraham Institute, Cambridge, United Kingdom
| | | | | | - David Oxley
- Proteomics Facility, The Babraham Institute, Cambridge, United Kingdom
| | - Heidi C. E. Welch
- Signalling Programme, The Babraham Institute, Cambridge, United Kingdom
- *Correspondence: Heidi C. E. Welch,
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21
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Cunha LL, Valsecchi VADS, Ward LS. Investigating population-level immunosenescence: From bench to bedside. Front Immunol 2022; 13:949928. [PMID: 36059504 PMCID: PMC9428264 DOI: 10.3389/fimmu.2022.949928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/02/2022] [Indexed: 11/13/2022] Open
Abstract
The immune response is remodeled with aging in a process called immunosenescence. Some immunologists conceive immunosenescence as an adaptation of immunity to the aged immune-environment rather than a merely collapsed reactivity of immune cells against microbes and tumor cells. Others believe on an uninterrupted activation of the innate immune system with aging, leading to a low grade, sterile and chronic proinflammatory state called inflammaging. For instance, it is possible that chronic infection by cytomegalovirus leads to persistent production of viral load. This phenomenon offers periodic stimuli to the immune system that ultimately contribute to the remodeling of the immune response. If investigating immunosenescence at the cellular level is already a difficult task, considering the population level is much more complex. However, by studying immunosenescence at the population level, we can extract valuable results with viable applications. While studies with animal models allow scientists to deepen their understanding of the mechanisms of immunosenescence, studying large populations can bring practical innovations to medicine and the health system. Many researchers and funders have dedicated themselves to producing methods for the evaluation of immunosenescence on a large scale, aiming to elucidate new mechanisms by which diseases are established in the elderly. The description of how the immune response is remodeled with aging emerges as a new tool to identify the subset of subjects in which unhealthy aging is a matter of time, to help better individualize clinical management and select patients who may benefit. of early interventions. This review focuses on functional assays as valuable methods for measuring the remodeling of the immune response with aging and discuss their clinical impact. We also recall fundamental concepts for understanding the aging process of the immune response. In addition, we highlight future prospects for immunosenescence research.
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Affiliation(s)
- Lucas Leite Cunha
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Federal University of São Paulo, São Paulo, Brazil
- Discipline of Internal Medicine and Laboratory Medicine, Federal University of São Paulo, São Paulo, Brazil
- *Correspondence: Lucas Leite Cunha,
| | - Victor Alexandre dos Santos Valsecchi
- Laboratory of Molecular and Translational Endocrinology, Division of Endocrinology, Federal University of São Paulo, São Paulo, Brazil
- Discipline of Internal Medicine and Laboratory Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Laura Sterian Ward
- Laboratory of Cancer Molecular Genetics, Faculty of Medical Sciences, University of Campinas (Unicamp), Campinas, Brazil
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22
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Vu R, Jin S, Sun P, Haensel D, Nguyen QH, Dragan M, Kessenbrock K, Nie Q, Dai X. Wound healing in aged skin exhibits systems-level alterations in cellular composition and cell-cell communication. Cell Rep 2022; 40:111155. [PMID: 35926463 PMCID: PMC9901190 DOI: 10.1016/j.celrep.2022.111155] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 05/13/2022] [Accepted: 07/12/2022] [Indexed: 02/08/2023] Open
Abstract
Delayed and often impaired wound healing in the elderly presents major medical and socioeconomic challenges. A comprehensive understanding of the cellular/molecular changes that shape complex cell-cell communications in aged skin wounds is lacking. Here, we use single-cell RNA sequencing to define the epithelial, fibroblast, immune cell types, and encompassing heterogeneities in young and aged skin during homeostasis and identify major changes in cell compositions, kinetics, and molecular profiles during wound healing. Our comparative study uncovers a more pronounced inflammatory phenotype in aged skin wounds, featuring neutrophil persistence and higher abundance of an inflammatory/glycolytic Arg1Hi macrophage subset that is more likely to signal to fibroblasts via interleukin (IL)-1 than in young counterparts. We predict systems-level differences in the number, strength, route, and signaling mediators of putative cell-cell communications in young and aged skin wounds. Our study exposes numerous cellular/molecular targets for functional interrogation and provides a hypothesis-generating resource for future wound healing studies.
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Affiliation(s)
- Remy Vu
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA,The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92627, USA,These authors contributed equally
| | - Suoqin Jin
- School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China,Department of Mathematics, University of California, Irvine, Irvine, CA 92697, USA,These authors contributed equally
| | - Peng Sun
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA,The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92627, USA,These authors contributed equally
| | - Daniel Haensel
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA,The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92627, USA,Present address: Program in Epithelial Biology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Quy Hoa Nguyen
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Morgan Dragan
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA,The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92627, USA
| | - Kai Kessenbrock
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA
| | - Qing Nie
- The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92627, USA,Department of Mathematics, University of California, Irvine, Irvine, CA 92697, USA,Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA 92697, USA,Correspondence: (Q.N.), (X.D.)
| | - Xing Dai
- Department of Biological Chemistry, School of Medicine, University of California, Irvine, Irvine, CA 92697, USA,The NSF-Simons Center for Multiscale Cell Fate Research, University of California, Irvine, Irvine, CA 92627, USA,Lead contact,Correspondence: (Q.N.), (X.D.)
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23
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Lázničková P, Bendíčková K, Kepák T, Frič J. Immunosenescence in Childhood Cancer Survivors and in Elderly: A Comparison and Implication for Risk Stratification. FRONTIERS IN AGING 2022; 2:708788. [PMID: 35822014 PMCID: PMC9261368 DOI: 10.3389/fragi.2021.708788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/05/2021] [Indexed: 12/14/2022]
Abstract
The population of childhood cancer survivors (CCS) has grown rapidly in recent decades. Although cured of their original malignancy, these individuals are at increased risk of serious late effects, including age-associated complications. An impaired immune system has been linked to the emergence of these conditions in the elderly and CCS, likely due to senescent immune cell phenotypes accompanied by low-grade inflammation, which in the elderly is known as "inflammaging." Whether these observations in the elderly and CCS are underpinned by similar mechanisms is unclear. If so, existing knowledge on immunosenescent phenotypes and inflammaging might potentially serve to benefit CCS. We summarize recent findings on the immune changes in CCS and the elderly, and highlight the similarities and identify areas for future research. Improving our understanding of the underlying mechanisms and immunosenescent markers of accelerated immune aging might help us to identify individuals at increased risk of serious health complications.
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Affiliation(s)
- Petra Lázničková
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Kamila Bendíčková
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Tomáš Kepák
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Pediatric Oncology, University Hospital Brno, Brno, Czech Republic
| | - Jan Frič
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Institute of Hematology and Blood Transfusion, Prague, Czech Republic
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24
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Roy R, Zayas J, Singh SK, Delgado K, Wood SJ, Mohamed MF, Frausto DM, Estupinian R, Giurini EF, Kuzel TM, Zloza A, Reiser J, Shafikhani SH. Overriding impaired FPR chemotaxis signaling in diabetic neutrophil stimulates infection control in murine diabetic wound. eLife 2022; 11:72071. [PMID: 35112667 PMCID: PMC8846594 DOI: 10.7554/elife.72071] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 02/01/2022] [Indexed: 11/19/2022] Open
Abstract
Infection is a major co-morbidity that contributes to impaired healing in diabetic wounds. Although impairments in diabetic neutrophils have been blamed for this co-morbidity, what causes these impairments and whether they can be overcome, remain largely unclear. Diabetic neutrophils, isolated from diabetic individuals, exhibit chemotaxis impairment but this peculiar functional impairment has been largely ignored because it appears to contradict the clinical findings which blame excessive neutrophil influx as a major impediment to healing in chronic diabetic ulcers. Here, we report that exposure to glucose in diabetic range results in impaired chemotaxis signaling through the formyl peptide receptor (FPR) in neutrophils, culminating in reduced chemotaxis and delayed neutrophil trafficking in the wound of Leprdb (db/db) type two diabetic mice, rendering diabetic wound vulnerable to infection. We further show that at least some auxiliary receptors remain functional under diabetic conditions and their engagement by the pro-inflammatory cytokine CCL3, overrides the requirement for FPR signaling and substantially improves infection control by jumpstarting the neutrophil trafficking toward infection, and stimulates healing in diabetic wound. We posit that CCL3 may have therapeutic potential for the treatment of diabetic foot ulcers if it is applied topically after the surgical debridement process which is intended to reset chronic ulcers into acute fresh wounds.
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Affiliation(s)
- Ruchi Roy
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Janet Zayas
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Sunil K Singh
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, Chicago, United States
| | - Kaylee Delgado
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Stephen J Wood
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, United States
| | - Mohamed F Mohamed
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Dulce M Frausto
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Ricardo Estupinian
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Eileena F Giurini
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Timothy M Kuzel
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Andrew Zloza
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Jochen Reiser
- Department of Medicine, Rush University Medical Center, Chicago, United States
| | - Sasha H Shafikhani
- Department of Medicine, Rush University Medical Center, Chicago, United States
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25
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Interconnections between Inflammageing and Immunosenescence during Ageing. Cells 2022; 11:cells11030359. [PMID: 35159168 PMCID: PMC8834134 DOI: 10.3390/cells11030359] [Citation(s) in RCA: 68] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/13/2022] [Accepted: 01/15/2022] [Indexed: 02/04/2023] Open
Abstract
Acute inflammation is a physiological response to injury or infection, with a cascade of steps that ultimately lead to the recruitment of immune cells to clear invading pathogens and heal wounds. However, chronic inflammation arising from the continued presence of the initial trigger, or the dysfunction of signalling and/or effector pathways, is harmful to health. While successful ageing in older adults, including centenarians, is associated with low levels of inflammation, elevated inflammation increases the risk of poor health and death. Hence inflammation has been described as one of seven pillars of ageing. Age-associated sterile, chronic, and low-grade inflammation is commonly termed inflammageing-it is not simply a consequence of increasing chronological age, but is also a marker of biological ageing, multimorbidity, and mortality risk. While inflammageing was initially thought to be caused by "continuous antigenic load and stress", reports from the last two decades describe a much more complex phenomenon also involving cellular senescence and the ageing of the immune system. In this review, we explore some of the main sources and consequences of inflammageing in the context of immunosenescence and highlight potential interventions. In particular, we assess the contribution of cellular senescence to age-associated inflammation, identify patterns of pro- and anti-inflammatory markers characteristic of inflammageing, describe alterations in the ageing immune system that lead to elevated inflammation, and finally assess the ways that diet, exercise, and pharmacological interventions can reduce inflammageing and thus, improve later life health.
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26
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Speranza E, Purushotham JN, Port JR, Schwarz B, Flagg M, Williamson BN, Feldmann F, Singh M, Pérez-Pérez L, Sturdevant GL, Roberts LM, Carmody A, Schulz JE, van Doremalen N, Okumura A, Lovaglio J, Hanley PW, Shaia C, Germain RN, Best SM, Munster VJ, Bosio CM, de Wit E. Age-related differences in immune dynamics during SARS-CoV-2 infection in rhesus macaques. Life Sci Alliance 2022; 5:5/4/e202101314. [PMID: 35039442 PMCID: PMC8807873 DOI: 10.26508/lsa.202101314] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 12/17/2022] Open
Abstract
Increased age is a risk factor for severe COVID-19. Multi-omics profiling in rhesus macaques suggests that aging may delay or impair cellular immune responses and the return to immune homeostasis. Advanced age is a key predictor of severe COVID-19. To gain insight into this relationship, we used the rhesus macaque model of SARS-CoV-2 infection. Eight older and eight younger macaques were inoculated with SARS-CoV-2. Animals were evaluated using viral RNA quantification, clinical observations, thoracic radiographs, single-cell transcriptomics, multiparameter flow cytometry, multiplex immunohistochemistry, cytokine detection, and lipidomics analysis at predefined time points in various tissues. Differences in clinical signs, pulmonary infiltrates, and virus replication were limited. Transcriptional signatures of inflammation-associated genes in bronchoalveolar lavage fluid at 3 dpi revealed efficient mounting of innate immune defenses in both cohorts. However, age-specific divergence of immune responses emerged during the post-acute phase. Older animals exhibited sustained local inflammatory innate responses, whereas local effector T-cell responses were induced earlier in the younger animals. Circulating lipid mediator and cytokine levels highlighted increased repair-associated signals in the younger animals, and persistent pro-inflammatory responses in the older animals. In summary, despite similar disease outcomes, multi-omics profiling suggests that age may delay or impair antiviral cellular immune responses and delay efficient return to immune homeostasis.
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Affiliation(s)
- Emily Speranza
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, USA
| | - Jyothi N Purushotham
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA.,The Jenner Institute, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Julia R Port
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Benjamin Schwarz
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Meaghan Flagg
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Brandi N Williamson
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Friederike Feldmann
- Rocky Mountain Veterinary Branch, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Manmeet Singh
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Lizzette Pérez-Pérez
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Gail L Sturdevant
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Lydia M Roberts
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Aaron Carmody
- Research Technologies Branch, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Jonathan E Schulz
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Neeltje van Doremalen
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Atsushi Okumura
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Jamie Lovaglio
- Rocky Mountain Veterinary Branch, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Patrick W Hanley
- Rocky Mountain Veterinary Branch, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Carl Shaia
- Rocky Mountain Veterinary Branch, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Ronald N Germain
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Bethesda, MD, USA
| | - Sonja M Best
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Vincent J Munster
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Catharine M Bosio
- Laboratory of Bacteriology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
| | - Emmie de Wit
- Laboratory of Virology, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA
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27
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Mahmud F, Roy R, Mohamed MF, Aboonabi A, Moric M, Ghoreishi K, Bayat M, Kuzel TM, Reiser J, Shafikhani SH. Therapeutic evaluation of immunomodulators in reducing surgical wound infection. FASEB J 2022; 36:e22090. [PMID: 34907595 PMCID: PMC9058973 DOI: 10.1096/fj.202101019r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 11/10/2021] [Accepted: 11/23/2021] [Indexed: 01/03/2023]
Abstract
Despite many advances in infection control practices, including prophylactic antibiotics, surgical site infections (SSIs) remain a significant cause of morbidity, prolonged hospitalization, and death worldwide. Our innate immune system possesses a multitude of powerful antimicrobial strategies which make it highly effective in combating bacterial, fungal, and viral infections. However, pathogens use various stealth mechanisms to avoid the innate immune system, which in turn buy them time to colonize wounds and damage tissues at surgical sites. We hypothesized that immunomodulators that can jumpstart and activate innate immune responses at surgical sites, would likely reduce infection at surgical sites. We used three immunomodulators; fMLP (formyl-Methionine-Lysine-Proline), CCL3 (MIP-1α), and LPS (Lipopolysaccharide), based on their documented ability to elicit strong inflammatory responses; in a surgical wound infection model with Pseudomonas aeruginosa to evaluate our hypothesis. Our data indicate that one-time topical treatment with these immunomodulators at low doses significantly increased proinflammatory responses in infected and uninfected surgical wounds and were as effective, (or even better), than a potent prophylactic antibiotic (Tobramycin) in reducing P. aeruginosa infection in wounds. Our data further show that immunomodulators did not have adverse effects on tissue repair and wound healing processes. Rather, they enhanced healing in both infected and uninfected wounds. Collectively, our data demonstrate that harnessing the power of the innate immune system by immunomodulators can significantly boost infection control and potentially stimulate healing. We propose that topical treatment with these immunomodulators at the time of surgery may have therapeutic potential in combating SSI, alone or in combination with prophylactic antibiotics.
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Affiliation(s)
- Foyez Mahmud
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA,Division of Hematology/Oncology/Cell Therapy, Rush University Medical Center, Chicago, IL, USA
| | - Ruchi Roy
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA,Division of Hematology/Oncology/Cell Therapy, Rush University Medical Center, Chicago, IL, USA
| | - Mohamed F. Mohamed
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA,Division of Hematology/Oncology/Cell Therapy, Rush University Medical Center, Chicago, IL, USA
| | - Anahita Aboonabi
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA,Division of Hematology/Oncology/Cell Therapy, Rush University Medical Center, Chicago, IL, USA
| | - Mario Moric
- Department of Anesthesiology, Rush University Medical Center, Chicago, IL, USA
| | | | - Mohammad Bayat
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Science, Tehran, Iran,Price Institute of Surgical Research, University of Louisville and Noveratech LLC. of Louisville, Louisville, KY, USA
| | - Timothy M. Kuzel
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA,Division of Hematology/Oncology/Cell Therapy, Rush University Medical Center, Chicago, IL, USA
| | - Jochen Reiser
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Sasha H. Shafikhani
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA,Division of Hematology/Oncology/Cell Therapy, Rush University Medical Center, Chicago, IL, USA,Cancer Center, Rush University Medical Center, Chicago, IL, USA,To whom correspondence should be addressed:
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28
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Sharma R, Diwan B, Sharma A, Witkowski JM. Emerging cellular senescence-centric understanding of immunological aging and its potential modulation through dietary bioactive components. Biogerontology 2022; 23:699-729. [PMID: 36261747 PMCID: PMC9581456 DOI: 10.1007/s10522-022-09995-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 10/12/2022] [Indexed: 12/13/2022]
Abstract
Immunological aging is strongly associated with the observable deleterious effects of human aging. Our understanding of the causes, effects, and therapeutics of aging immune cells has long been considered within the sole purview of immunosenescence. However, it is being progressively realized that immunosenescence may not be the only determinant of immunological aging. The cellular senescence-centric theory of aging proposes a more fundamental and specific role of immune cells in regulating senescent cell (SC) burden in aging tissues that has augmented the notion of senescence immunotherapy. Now, in addition, several emerging studies are suggesting that cellular senescence itself may be prevalent in aging immune cells, and that senescent immune cells exhibiting characteristic markers of cellular senescence, similar to non-leucocyte cells, could be among the key drivers of various facets of physiological aging. The present review integrates the current knowledge related to immunosenescence and cellular senescence in immune cells per se, and aims at providing a cohesive overview of these two phenomena and their significance in immunity and aging. We present evidence and rationalize that understanding the extent and impact of cellular senescence in immune cells vis-à-vis immunosenescence is necessary for truly comprehending the notion of an 'aged immune cell'. In addition, we also discuss the emerging significance of dietary factors such as phytochemicals, probiotic bacteria, fatty acids, and micronutrients as possible modulators of immunosenescence and cellular senescence. Evidence and opportunities related to nutritional bioactive components and immunological aging have been deliberated to augment potential nutrition-oriented immunotherapy during aging.
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Affiliation(s)
- Rohit Sharma
- grid.430140.20000 0004 1799 5083Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, 173229 India
| | - Bhawna Diwan
- grid.430140.20000 0004 1799 5083Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, 173229 India
| | - Anamika Sharma
- grid.464631.20000 0004 1775 3615Department of Biological Sciences, National Institute of Pharmaceutical Education and Research, Hyderabad, 500037 India
| | - Jacek M. Witkowski
- grid.11451.300000 0001 0531 3426Department of Pathophysiology, Medical University of Gdańsk, Dębinki 7, 80-211 Gdańsk, Poland
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29
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Cakala-Jakimowicz M, Kolodziej-Wojnar P, Puzianowska-Kuznicka M. Aging-Related Cellular, Structural and Functional Changes in the Lymph Nodes: A Significant Component of Immunosenescence? An Overview. Cells 2021; 10:cells10113148. [PMID: 34831371 PMCID: PMC8621398 DOI: 10.3390/cells10113148] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 12/11/2022] Open
Abstract
Aging affects all tissues and organs. Aging of the immune system results in the severe disruption of its functions, leading to an increased susceptibility to infections, an increase in autoimmune disorders and cancer incidence, and a decreased response to vaccines. Lymph nodes are precisely organized structures of the peripheral lymphoid organs and are the key sites coordinating innate and long-term adaptive immune responses to external antigens and vaccines. They are also involved in immune tolerance. The aging of lymph nodes results in decreased cell transport to and within the nodes, a disturbance in the structure and organization of nodal zones, incorrect location of individual immune cell types and impaired intercellular interactions, as well as changes in the production of adequate amounts of chemokines and cytokines necessary for immune cell proliferation, survival and function, impaired naïve T- and B-cell homeostasis, and a diminished long-term humoral response. Understanding the causes of these stromal and lymphoid microenvironment changes in the lymph nodes that cause the aging-related dysfunction of the immune system can help to improve long-term immune responses and the effectiveness of vaccines in the elderly.
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Affiliation(s)
- Marta Cakala-Jakimowicz
- Department of Human Epigenetics, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland;
- Correspondence: (M.C.-J.); (M.P.-K.)
| | - Paulina Kolodziej-Wojnar
- Department of Human Epigenetics, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland;
| | - Monika Puzianowska-Kuznicka
- Department of Human Epigenetics, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland;
- Department of Geriatrics and Gerontology, Medical Centre of Postgraduate Education, 01-813 Warsaw, Poland
- Correspondence: (M.C.-J.); (M.P.-K.)
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Serre-Miranda C, Roque S, Barreira-Silva P, Nobrega C, Vieira N, Costa P, Palha JA, Correia-Neves M. Age-related sexual dimorphism on the longitudinal progression of blood immune cells in BALB/cByJ mice. J Gerontol A Biol Sci Med Sci 2021; 77:883-891. [PMID: 34741509 PMCID: PMC9071472 DOI: 10.1093/gerona/glab330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Indexed: 11/29/2022] Open
Abstract
The study of immune system aging is of relevance, considering its myriad of interactions and role in protecting and maintaining body homeostasis. While mouse models have been extensively used to study immune system aging, little is known on how the main immune populations progress over time and what is the impact of sex. To contribute to filling this gap, male and female BALB/cByJ mice were longitudinally evaluated, from 3 to 18 months old, for the main blood populations, assessed by flow cytometry. Using linear mixed-effect models, we observed that the percentages of neutrophils, monocytes, eosinophils, and total natural killer (NK) cells increase with aging, while those of B cells, T cells (including CD4+ and CD8+ subsets), and Ly6C+ NK cells decrease. Males present higher percentages of neutrophils and classical monocytes Ly6Chigh over time, while females present higher percentages of total T cells, both CD4+ and CD8+, eosinophils, and NK cells. Males and females display similar percentages of B cells, even though with opposite accelerated progressions over time. This study revealed that mouse models recapitulate what is observed in humans during aging: an overall proportional decrease in the adaptive and an increase in the innate immune cells. Additionally, it uncovers an age-related sexual dimorphism in the proportion of immune cells in circulation, further strengthening the need to explore the impact of sex when addressing immune system aging using mouse models.
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Affiliation(s)
- Cláudia Serre-Miranda
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Susana Roque
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Palmira Barreira-Silva
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Claudia Nobrega
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Neide Vieira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Patrício Costa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joana Almeida Palha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Margarida Correia-Neves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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31
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Santoro A, Bientinesi E, Monti D. Immunosenescence and inflammaging in the aging process: age-related diseases or longevity? Ageing Res Rev 2021; 71:101422. [PMID: 34391943 DOI: 10.1016/j.arr.2021.101422] [Citation(s) in RCA: 144] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/01/2021] [Accepted: 08/03/2021] [Indexed: 12/12/2022]
Abstract
During aging the immune system (IS) undergoes remarkable changes that collectively are known as immunosenescence. It is a multifactorial and dynamic phenomenon that affects both natural and acquired immunity and plays a critical role in most chronic diseases in older people. For a long time, immunosenescence has been considered detrimental because it may lead to a low-grade, sterile chronic inflammation we proposed to call "inflammaging" and a progressive reduction in the ability to trigger effective antibody and cellular responses against infections and vaccinations. Recently, many scientists revised this negative meaning because it can be considered an essential adaptation/remodeling resulting from the lifelong immunological biography of single individuals from an evolutionary perspective. Inflammaging can be considered an adaptive process because it can trigger an anti-inflammatory response to counteract the age-related pro-inflammatory environment. Centenarians represent a valuable model to study the beneficial changes occurring in the IS with age. These extraordinary individuals reached the extreme limits of human life by slowing down the aging process and, in most cases, delaying, avoiding or surviving the major age-associated diseases. They indeed show a complex and heterogeneous phenotype determined by an improved ability to adapt and remodel in response to harmful stimuli. This review aims to point out the intimate relationship between immunosenescence and inflammaging and how these processes impact unsuccessful aging rather than longevity. We also describe the gut microbiota age-related changes as one of the significant triggers of inflammaging and the sex/gender differences in the immune system of the elderly, contributing to the sex/gender disparity in terms of epidemiology, pathophysiology, symptoms and severity of age-related diseases. Finally, we discuss how these phenomena could influence the susceptibility to COVID-19 infection.
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Abstract
ABSTRACT Burn injuries are a common form of traumatic injury that leads to significant morbidity and mortality worldwide. Burn injuries are characterized by inflammatory processes and alterations in numerous organ systems and functions. Recently, it has become apparent that the gastrointestinal bacterial microbiome is a key component of regulating the immune response and recovery from burn and can also contribute to significant detrimental sequelae after injury, such as sepsis and multiple organ failure. Microbial dysbiosis has been linked to multiple disease states; however, its role in exacerbating acute traumatic injuries, such as burn, is poorly understood. In this article, we review studies that document changes in the intestinal microbiome after burn injury, assess the implications in post-burn pathogenesis, and the potential for further discovery and research.
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Affiliation(s)
- Marisa E. Luck
- Burn & Shock Trauma Research Institute, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Alcohol Research Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Integrative Cell Biology Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
| | - Caroline J. Herrnreiter
- Burn & Shock Trauma Research Institute, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Alcohol Research Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Biochemistry and Molecular Biology Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
| | - Mashkoor A. Choudhry
- Burn & Shock Trauma Research Institute, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Alcohol Research Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Department of Surgery, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Integrative Cell Biology Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
- Biochemistry and Molecular Biology Program, Stritch School of Medicine, Loyola University Chicago Health Sciences Division, Maywood, IL 60153, USA
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Goswami AG, Basu S, Shukla VK. Wound Healing in the Golden Agers: What We Know and the Possible Way Ahead. INT J LOW EXTR WOUND 2021; 21:264-271. [PMID: 34382451 DOI: 10.1177/15347346211037841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
While "population aging" is an accomplishment that deserves acclamation, it is in itself a tremendous challenge. Age-related skin changes, impaired wound healing, and concurrent comorbidities are the deadly triad that contribute most to the development of nonhealing chronic wounds in the elderly. This imposes enormous medical, social, and financial burden. With the rising trend in the aging population, this problem is likely to exacerbate unless multidisciplinary, rapt wound care strategies are developed. The last decade was dedicated to understand the basic biology underlying the wound healing process but most in vitro and animal model studies translated poorly to human conditions. Forthcoming, the focus is on the development of diagnostic and therapeutic strategies to improve healing in this vulnerable age group. Further, understanding the complex pathobiology of cellular senescence and wound healing process is required to develop focused therapy for these "problem wounds" in the elderly.
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Affiliation(s)
| | - Somprakas Basu
- 442339All India Institute of Medical Sciences, Rishikesh, India
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34
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Budamagunta V, Foster TC, Zhou D. Cellular senescence in lymphoid organs and immunosenescence. Aging (Albany NY) 2021; 13:19920-19941. [PMID: 34382946 PMCID: PMC8386533 DOI: 10.18632/aging.203405] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 08/02/2021] [Indexed: 02/07/2023]
Abstract
Immunosenescence is a multi-faceted phenomenon at the root of age-associated immune dysfunction. It can lead to an array of pathological conditions, including but not limited to a decreased capability to surveil and clear senescent cells (SnCs) and cancerous cells, an increased autoimmune responses leading to tissue damage, a reduced ability to tackle pathogens, and a decreased competence to illicit a robust response to vaccination. Cellular senescence is a phenomenon by which oncogene-activated, stressed or damaged cells undergo a stable cell cycle arrest. Failure to efficiently clear SnCs results in their accumulation in an organism as it ages. SnCs actively secrete a myriad of molecules, collectively called senescence-associated secretory phenotype (SASP), which are factors that cause dysfunction in the neighboring tissue. Though both cellular senescence and immunosenescence have been studied extensively and implicated in various pathologies, their relationship has not been greatly explored. In the wake of an ongoing pandemic (COVID-19) that disproportionately affects the elderly, immunosenescence as a function of age has become a topic of great importance. The goal of this review is to explore the role of cellular senescence in age-associated lymphoid organ dysfunction and immunosenescence, and provide a framework to explore therapies to rejuvenate the aged immune system.
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Affiliation(s)
- Vivekananda Budamagunta
- Genetics and Genomics Graduate Program, Genetics Institute, College of Medicine, University of Florida, Gainesville, FL 32610, USA.,Department of Neuroscience, McKnight Brain Institute, College of Medicine, University of Florida, Gainesville, FL 32610, USA.,Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
| | - Thomas C Foster
- Genetics and Genomics Graduate Program, Genetics Institute, College of Medicine, University of Florida, Gainesville, FL 32610, USA.,Department of Neuroscience, McKnight Brain Institute, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Daohong Zhou
- Genetics and Genomics Graduate Program, Genetics Institute, College of Medicine, University of Florida, Gainesville, FL 32610, USA.,Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
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35
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Bounds K, Colmer-Hamood JA, Myntti M, Jeter RM, Hamood AN. The influence of a biofilm-dispersing wound gel on the wound healing process. Int Wound J 2021; 19:553-572. [PMID: 34263993 PMCID: PMC8874046 DOI: 10.1111/iwj.13653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/14/2021] [Accepted: 06/21/2021] [Indexed: 01/02/2023] Open
Abstract
Topical antimicrobials that reduce the bacterial bioburden within a chronically‐infected wound may have helpful or harmful effects on the healing process. We used murine models of full‐thickness skin wounds to determine the effects of the novel biofilm‐dispersing wound gel (BDWG) and its gel base on the healing of uninfected wounds. The rate of wound closure over 19 days was comparable among the BDWG‐treated (BT) wounds and the controls. Compared with the controls, histology of the BT wounds showed formation of a stable blood clot at day 1, more neovascularisation and reepithelialisation at day 3, and more organised healing at day 7. Fluorescence‐activated cell sorting analysis showed a lower percentage of neutrophils in wounded tissues of the BT group at days 1 and 3, and significantly more M2 macrophages at day 3. Levels of proinflammatory cytokines and chemokines were increased over the uninjured baseline within the wounds of all treatment groups but the levels were significantly lower in the BT group at day 1, modulating the inflammatory response. Our results suggest that BDWG does not interfere with the wound healing process and may enhance it by lowering inflammation and allowing transition to the proliferative stage of wound healing by day 3.
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Affiliation(s)
- Kayla Bounds
- Department of Biological Sciences, Texas Tech University, Lubbock, Texas, USA.,Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Jane A Colmer-Hamood
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA.,Department of Medical Education, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Matthew Myntti
- Research and Development, Next Science LLC, Jacksonville, Florida, USA
| | - Randall M Jeter
- Department of Biological Sciences, Texas Tech University, Lubbock, Texas, USA
| | - Abdul N Hamood
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA.,Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
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36
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Houseright RA, Miskolci V, Mulvaney O, Bortnov V, Mosher DF, Rindy J, Bennin DA, Huttenlocher A. Myeloid-derived growth factor regulates neutrophil motility in interstitial tissue damage. J Cell Biol 2021; 220:212198. [PMID: 34047769 PMCID: PMC8167897 DOI: 10.1083/jcb.202103054] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/25/2021] [Accepted: 05/06/2021] [Indexed: 12/13/2022] Open
Abstract
Neutrophil recruitment to tissue damage is essential for host defense but can also impede tissue repair. The cues that differentially regulate neutrophil responses to tissue damage and infection remain unclear. Here, we report that the paracrine factor myeloid-derived growth factor (MYDGF) is induced by tissue damage and regulates neutrophil motility to damaged, but not infected, tissues in zebrafish larvae. Depletion of MYDGF impairs wound healing, and this phenotype is rescued by depleting neutrophils. Live imaging and photoconversion reveal impaired neutrophil reverse migration and inflammation resolution in mydgf mutants. We found that persistent neutrophil inflammation in tissues of mydgf mutants was dependent on the HIF-1α pathway. Taken together, our data suggest that MYDGF is a damage signal that regulates neutrophil interstitial motility and inflammation through a HIF-1α pathway in response to tissue damage.
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Affiliation(s)
- Ruth A Houseright
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI
| | - Veronika Miskolci
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI
| | - Oscar Mulvaney
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI
| | - Valeriu Bortnov
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI
| | - Deane F Mosher
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI
| | - Julie Rindy
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI
| | - David A Bennin
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI
| | - Anna Huttenlocher
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI.,Department of Pediatrics, University of Wisconsin-Madison, Madison, WI
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37
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Okamoto O, Kai Y, Munemoto S, Suzuki R, Akishino K, Hashimoto H. A clinical and statistical analysis of abscess in cellulitis. J Dermatol 2021; 48:1162-1171. [PMID: 33890313 DOI: 10.1111/1346-8138.15898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 03/02/2021] [Accepted: 03/23/2021] [Indexed: 11/28/2022]
Abstract
The features of abscess that forms in cellulitis patients were investigated. Among 449 cellulitis cases, about 15% developed abscess, and about 70% of teenaged patients were abscess cases. Furthermore, abscess in the younger age group occurred almost exclusively among male patients. The lesion was predominantly concentric at all ages in the abscess group and in teenagers in the non-abscess group. In contrast, it was diffuse in patients ≥20 years old in the non-abscess group. The clinical symptoms and laboratory values in the abscess group were generally more severe than those in the non-abscess group, especially in the older age group. The abscess sizes increased with the initial area of the lesions. Most abscess cases received incision, and post-incision ulcers were mostly conservatively treated. The duration required for treatment termination was >30 days longer in the abscess group than in the non-abscess group. When post-incision ulcers were conservatively treated, the duration until healing increased with abscess size. However, the durations did not significantly differ between the conservatively and surgically treated groups. When surgically treated, many ulcers healed within 19 days after operation and the outpatient follow-up period tended to be relatively short. Most teenaged patients were student athletes, and thus needed an early return to competition. The main cause in these patients was bruising during sports, with rugby football the most common causative sport. Ulcer closure by operation was suggested to be preferable for shortening the outpatient follow-up period, especially for student athlete patients.
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Affiliation(s)
- Osamu Okamoto
- Dermatology Unit, Oita City Medical Association's Almeida Memorial Hospital, Oita, Japan
| | - Yoshitaka Kai
- Dermatology Unit, National Hospital Organization Beppu Medical Center, Beppu, Japan
| | - Sekinori Munemoto
- Plastic Surgery Unit, Oita City Medical Association's Almeida Memorial Hospital, Oita, Japan
| | - Rui Suzuki
- Plastic Surgery Unit, Oita City Medical Association's Almeida Memorial Hospital, Oita, Japan
| | - Kosuke Akishino
- Plastic Surgery Unit, Oita City Medical Association's Almeida Memorial Hospital, Oita, Japan
| | - Hiroyuki Hashimoto
- Plastic Surgery Unit, Oita City Medical Association's Almeida Memorial Hospital, Oita, Japan
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38
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Versey Z, da Cruz Nizer WS, Russell E, Zigic S, DeZeeuw KG, Marek JE, Overhage J, Cassol E. Biofilm-Innate Immune Interface: Contribution to Chronic Wound Formation. Front Immunol 2021; 12:648554. [PMID: 33897696 PMCID: PMC8062706 DOI: 10.3389/fimmu.2021.648554] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 03/17/2021] [Indexed: 12/19/2022] Open
Abstract
Delayed wound healing can cause significant issues for immobile and ageing individuals as well as those living with co-morbid conditions such as diabetes, cardiovascular disease, and cancer. These delays increase a patient’s risk for infection and, in severe cases, can result in the formation of chronic, non-healing ulcers (e.g., diabetic foot ulcers, surgical site infections, pressure ulcers and venous leg ulcers). Chronic wounds are very difficult and expensive to treat and there is an urgent need to develop more effective therapeutics that restore healing processes. Sustained innate immune activation and inflammation are common features observed across most chronic wound types. However, the factors driving this activation remain incompletely understood. Emerging evidence suggests that the composition and structure of the wound microbiome may play a central role in driving this dysregulated activation but the cellular and molecular mechanisms underlying these processes require further investigation. In this review, we will discuss the current literature on: 1) how bacterial populations and biofilms contribute to chronic wound formation, 2) the role of bacteria and biofilms in driving dysfunctional innate immune responses in chronic wounds, and 3) therapeutics currently available (or underdevelopment) that target bacteria-innate immune interactions to improve healing. We will also discuss potential issues in studying the complexity of immune-biofilm interactions in chronic wounds and explore future areas of investigation for the field.
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Affiliation(s)
- Zoya Versey
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | | | - Emily Russell
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | - Sandra Zigic
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | - Katrina G DeZeeuw
- Department of Complex Continuing Care, Saint Vincent Hospital, Ottawa, ON, Canada
| | - Jonah E Marek
- Department of Complex Continuing Care, Saint Vincent Hospital, Ottawa, ON, Canada
| | - Joerg Overhage
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada
| | - Edana Cassol
- Department of Health Sciences, Carleton University, Ottawa, ON, Canada.,Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, ON, Canada
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39
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An aging mouse model of human chronic myeloid leukemia. Oncogene 2021; 40:3152-3163. [PMID: 33824471 PMCID: PMC8087641 DOI: 10.1038/s41388-021-01770-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/09/2021] [Accepted: 03/23/2021] [Indexed: 11/22/2022]
Abstract
Chronic myeloid leukemia (CML) is an age-dependent blood malignancy. Like many other age-dependent human diseases, laboratory animal research of CML uses young mice that do not factor in the influence of aging. To understand how aging may impact animal modeling of human age-dependent diseases, we established the first aging mouse model of human CML in BALB/c mice in the advanced age defined by 75% survival. This model was developed by noncytotoxic depletion of bone marrow lineage-positive cells followed by BCR-ABL retroviral transduction and transplantation. CML developed in aging mice shared many similarities to that in young mice, but had increased incidence of anemia that is often seen in human CML. Importantly, we showed that aging of both donor hematopoietic stem cells and recipient bone marrow niche impacted BCR-ABL mediated leukemogenesis and leukemia spectrum. Optimal CML induction relied on age-matching for donors and recipients, and cross-transplantation between young and old mice produced a mixture of different leukemia. Therefore, our model provides initial evidence of the feasibility and merit of CML modeling in aging mice and offers a new tool for future studies of CML stem cell drug resistance and therapeutic intervention in which aging would be taken into consideration as an influencing factor.
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40
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Ding X, Kakanj P, Leptin M, Eming SA. Regulation of the Wound Healing Response during Aging. J Invest Dermatol 2021; 141:1063-1070. [DOI: 10.1016/j.jid.2020.11.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/30/2020] [Accepted: 11/16/2020] [Indexed: 12/20/2022]
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41
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Lasigliè D. Sirtuins and the prevention of immunosenescence. VITAMINS AND HORMONES 2021; 115:221-264. [PMID: 33706950 DOI: 10.1016/bs.vh.2020.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Aging of hematopoietic stem cells (HSCs) has been largely described as one underlying cause of senescence of the immune-hematopoietic system (immunosenescence). A set of well-defined hallmarks characterizes aged HSCs contributing to unbalanced hematopoiesis and aging-associated functional alterations of both branches of the immune system. In this chapter, the contribution of sirtuins, a family of conserved NAD+ dependent deacetylases with key roles in metabolism, genome integrity, aging and lifespan, to immunosenescence, will be addressed. In particular, the role of SIRT6 will be deeply analyzed highlighting a multifaceted part of this deacetylase in HSCs aging as well as in the immunosenescence of dendritic cells (DCs). These and other emerging data are currently paving the way for future design and development of rejuvenation means aiming at rescuing age-related changes in immune function in the elderly and combating age-associated hematopoietic diseases.
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Affiliation(s)
- Denise Lasigliè
- Istituto Comprensivo "Franco Marro", Ministero dell'Istruzione Ministero dell'Università e della Ricerca (M.I.U.R), Villar Perosa, TO, Italy.
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42
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Kim E, Cho S. CNS and peripheral immunity in cerebral ischemia: partition and interaction. Exp Neurol 2021; 335:113508. [PMID: 33065078 PMCID: PMC7750306 DOI: 10.1016/j.expneurol.2020.113508] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/28/2020] [Accepted: 10/08/2020] [Indexed: 02/07/2023]
Abstract
Stroke elicits excessive immune activation in the injured brain tissue. This well-recognized neural inflammation in the brain is not just an intrinsic organ response but also a result of additional intricate interactions between infiltrating peripheral immune cells and the resident immune cells in the affected areas. Given that there is a finite number of immune cells in the organism at the time of stroke, the partitioned immune systems of the central nervous system (CNS) and periphery must appropriately distribute the limited pool of immune cells between the two domains, mounting a necessary post-stroke inflammatory response by supplying a sufficient number of immune cells into the brain while maintaining peripheral immunity. Stroke pathophysiology has mainly been neurocentric in focus, but understanding the distinct roles of the CNS and peripheral immunity in their concerted action against ischemic insults is crucial. This review will discuss stroke-induced influences of the peripheral immune system on CNS injury/repair and of neural inflammation on peripheral immunity, and how comorbidity influences each.
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Affiliation(s)
- Eunhee Kim
- Vivian L. Smith Department of Neurosurgery at University of Texas Health Science Center at Houston, Houston, TX, United States of America
| | - Sunghee Cho
- Burke Neurological Institute, White Plains, NY, United States of America; Feil Brain Mind Research Institute, Weill Cornell Medicine, New York, NY, United States of America.
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Qiu D, Nikita D, Zhang L, Deng J, Xia Z, Zhan J, Huang J, Liu L, Liu F, Duan J, Li J. ICAM-1 deletion delays the repair process in aging diabetic mice. Metabolism 2021; 114:154412. [PMID: 33164859 DOI: 10.1016/j.metabol.2020.154412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 10/11/2020] [Accepted: 10/20/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND The delayed repair process in the aging diabetic population is becoming an alarming public health concern. ICAM-1 plays an important role in orchestrating the repair process by mediating neutrophil recruitment and phagocytosis. However, little is known about the role of ICAM-1 in aging diabetic repair. METHODS By causing injury in aging diabetic mice with ICAM-1 deletion (AD-ICAM-1-/-), we found that AD-ICAM-1-/- mice exhibited a delayed repair process with incomplete re-epithelialization and reduced angiogenesis. Additionally, high-throughput Illumina sequencing was performed to evaluate the microbiota of such mice. RESULTS The results indicate that the microbiota of the AD-ICAM-1-/- injury site differed taxonomically at both the phylum and genus levels. Neutrophil recruitment and phagocytic function were also reduced in the AD-ICAM-1-/- group. Notably, major inflammatory biomarker expression was also detected in AD-ICAM-1-/- injured tissue. CONCLUSIONS Overall, this study demonstrated that AD-ICAM-1-/- mice exhibit delayed repair. In addition, neutrophil recruitment and phagocytic activity were impaired in the AD-ICAM-1-/- group, which may have allowed microbes to colonize the injury site.
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Affiliation(s)
- Dongxu Qiu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - David Nikita
- School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Lei Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Jun Deng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Zhiwei Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Junkun Zhan
- Department of Geriatrics, The Second Hospital of Xiangya, Hunan 410011, PR China
| | - Jiabing Huang
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, PR China
| | - Lanzhi Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Fan Liu
- Department of Radiology, Xiangya Hospital, Central South University, Changsha 410008, PR China
| | - Jingfeng Duan
- Department of Geriatrics, The Third Clinical Hospital of Xiangya Medical School, Hunan 410011, PR China
| | - Jing Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, PR China.
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Bagood MD, Gallegos AC, Medina Lopez AI, Pham VX, Yoon DJ, Fregoso DR, Yang HY, Murphy WJ, Isseroff RR. Re-Examining the Paradigm of Impaired Healing in the Aged Murine Excision Wound Model. J Invest Dermatol 2020; 141:1071-1075.e4. [PMID: 33259830 DOI: 10.1016/j.jid.2020.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/22/2020] [Accepted: 10/29/2020] [Indexed: 10/22/2022]
Affiliation(s)
- Michelle D Bagood
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA
| | - Anthony C Gallegos
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA; Dermatology Section, VA Northern California Health Care System, Sacramento, California, USA
| | - Andrea I Medina Lopez
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA; Dermatology Section, VA Northern California Health Care System, Sacramento, California, USA
| | - Vincent X Pham
- Department of Molecular and Cellular Biology, University of California Davis, California, USA
| | - Daniel J Yoon
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA; Dermatology Section, VA Northern California Health Care System, Sacramento, California, USA
| | - Daniel R Fregoso
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA
| | - Hsin-Ya Yang
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA
| | - William J Murphy
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA; Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, California, USA
| | - R Rivkah Isseroff
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, California, USA; Dermatology Section, VA Northern California Health Care System, Sacramento, California, USA.
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Dysregulation of leukocyte trafficking in ageing: Causal factors and possible corrective therapies. Pharmacol Res 2020; 163:105323. [PMID: 33276099 DOI: 10.1016/j.phrs.2020.105323] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 11/24/2020] [Accepted: 11/27/2020] [Indexed: 02/07/2023]
Abstract
Ageing is a universal biological phenomenon that is accompanied by the development of chronic, low-grade inflammation and remodelling of the immune system resulting in compromised immune function. In this review, we explore how the trafficking of innate and adaptive immune cells under homeostatic and inflammatory conditions is dysregulated in ageing. We particularly highlight the age-related changes in the expression of adhesion molecules and chemokine receptor/ligands, and the accumulation of senescent cells that drive modulated leukocyte trafficking. These age-related changes to leukocyte trafficking are multifactorial and specific to leukocyte subset, tissue, type of vascular bed, and inflammatory status. However, dysregulated leukocyte trafficking ultimately affects immune responses in older adults. We therefore go on to discuss approved drugs, including anti-integrins, anti-chemokines and statins, as well as novel therapeutics that may be used to target dysregulated leukocyte trafficking in ageing, improve immune responses and delay the onset of age-related diseases.
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46
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The Cutaneous Wound Innate Immunological Microenvironment. Int J Mol Sci 2020; 21:ijms21228748. [PMID: 33228152 PMCID: PMC7699544 DOI: 10.3390/ijms21228748] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/17/2020] [Accepted: 11/17/2020] [Indexed: 12/17/2022] Open
Abstract
The skin represents the first line of defense and innate immune protection against pathogens. Skin normally provides a physical barrier to prevent infection by pathogens; however, wounds, microinjuries, and minor barrier impediments can present open avenues for invasion through the skin. Accordingly, wound repair and protection from invading pathogens are essential processes in successful skin barrier regeneration. To repair and protect wounds, skin promotes the development of a specific and complex immunological microenvironment within and surrounding the disrupted tissue. This immune microenvironment includes both innate and adaptive processes, including immune cell recruitment to the wound and secretion of extracellular factors that can act directly to promote wound closure and wound antimicrobial defense. Recent work has shown that this immune microenvironment also varies according to the specific context of the wound: the microbiome, neuroimmune signaling, environmental effects, and age play roles in altering the innate immune response to wounding. This review will focus on the role of these factors in shaping the cutaneous microenvironment and how this ultimately impacts the immune response to wounding.
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47
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Bayani A, Dunster JL, Crofts JJ, Nelson MR. Spatial considerations in the resolution of inflammation: Elucidating leukocyte interactions via an experimentally-calibrated agent-based model. PLoS Comput Biol 2020; 16:e1008413. [PMID: 33137107 PMCID: PMC7660912 DOI: 10.1371/journal.pcbi.1008413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 11/12/2020] [Accepted: 10/01/2020] [Indexed: 01/13/2023] Open
Abstract
Many common medical conditions (such as cancer, arthritis, chronic obstructive pulmonary disease (COPD), and others) are associated with inflammation, and even more so when combined with the effects of ageing and multimorbidity. While the inflammatory response varies in different tissue types, under disease and in response to therapeutic interventions, it has common interactions that occur between immune cells and inflammatory mediators. Understanding these underlying inflammatory mechanisms is key in progressing treatments and therapies for numerous inflammatory conditions. It is now considered that constituent mechanisms of the inflammatory response can be actively manipulated in order to drive resolution of inflammatory damage; particularly, those mechanisms related to the pro-inflammatory role of neutrophils and the anti-inflammatory role of macrophages. In this article, we describe the assembly of a hybrid mathematical model in which the spatial spread of inflammatory mediators is described through partial differential equations, and immune cells (neutrophils and macrophages) are described individually via an agent-based modelling approach. We pay close attention to how immune cells chemotax toward pro-inflammatory mediators, presenting a model for cell chemotaxis that is calibrated against experimentally observed cell trajectories in healthy and COPD-affected scenarios. We illustrate how variations in key model parameters can drive the switch from resolution of inflammation to chronic outcomes, and show that aberrant neutrophil chemotaxis can move an otherwise healthy outcome to one of chronicity. Finally, we reflect on our results in the context of the on-going hunt for new therapeutic interventions. Inflammation is the body’s primary defence to harmful stimuli such as infections, toxins and tissue strain but also underlies a much broader range of conditions, including asthma, arthritis and cancer. The inflammatory response is key in resolving injury to facilitate recovery, and involves a range of interactions between immune cells (leukocytes, neutrophils and macrophages in particular) and inflammatory mediators. Immune cells are recruited from the blood stream in response to injury. Once in tissue, neutrophils release toxins to kill invading agents and resolve damage; however, if not carefully managed by other immune cells (mainly macrophages), their responses can increase inflammation instead of helping to resolve it. We model these interactions in response to damage using a spatial model, examining how a healthy response can prevent localised inflammation from spreading. We pay close attention to how cells migrate toward the damaged area, as many inflammatory conditions are associated with impairment of this process. We calibrate our model against experimentally-observed cell trajectories from healthy patients and patients with chronic obstructive pulmonary disease. We illustrate that a healthy outcome depends strongly upon efficient cell migration and a delicate balance between the pro- and anti-inflammatory effects of neutrophils and macrophages.
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Affiliation(s)
- Anahita Bayani
- Department of Physics & Mathematics, Nottingham Trent University, Clifton Campus, Nottingham, NG11 8NS, United Kingdom
| | - Joanne L. Dunster
- Institute for Cardiovascular and Metabolic Research, University of Reading, Reading, RG6 6AS, United Kingdom
| | - Jonathan J. Crofts
- Department of Physics & Mathematics, Nottingham Trent University, Clifton Campus, Nottingham, NG11 8NS, United Kingdom
| | - Martin R. Nelson
- Department of Physics & Mathematics, Nottingham Trent University, Clifton Campus, Nottingham, NG11 8NS, United Kingdom
- * E-mail:
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Magri S, Masetto E, Solito S, Francescato S, Belluzzi E, Pozzuoli A, Berizzi A, Ruggieri P, Mandruzzato S. Human MDSCs derived from the bone marrow maintain their functional ability but have a reduced frequency of induction in the elderly compared to pediatric donors. IMMUNITY & AGEING 2020; 17:27. [PMID: 32944054 PMCID: PMC7488050 DOI: 10.1186/s12979-020-00199-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022]
Abstract
Myeloid-derived suppressor cells (MDSCs) are a heterogeneous population of immunosuppressive cells developing from myeloid progenitors, which are enriched in pathological conditions such as cancer, and are known to inhibit the functions of effector T cells. During aging, several changes occur both at the adaptive and innate immune system level, in a process defined as immunoscenescence. In particular, the low-grade inflammation state observed in the elderly appears to affect hematopoiesis. We previously demonstrated that the combination of GM-CSF and G-CSF drives the in vitro generation of bone marrow-derived MDSCs (BM-MDSCs) from precursors present in human bone marrow aspirates of healthy donors, and that these cells are endowed with a strong immune suppressive ability, resembling that of cancer-associated MDSCs. In the present work we investigated BM-MDSCs induction and functional ability in a cohort of pediatric versus elderly donors. To this aim, we analyzed the differences in maturation stages and ability to suppress T cell proliferation. We found that the ex vivo distribution of myeloid progenitors is similar between pediatric and elderly individuals, whereas after cytokine treatment a significant reduction in the more immature compartment is observed in the elderly. Despite the decreased frequency, BM-MDSCs maintain their suppressive capacity in aged donors. Taken together, these results indicate that in vitro induction of MDSCs from the BM is reduced with aging and opens new hypotheses on the role of age-related processes in myelopoiesis.
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Affiliation(s)
- Sara Magri
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Gattamelata, 64, 35128 Padova, Italy
| | | | - Samantha Solito
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Gattamelata, 64, 35128 Padova, Italy.,Present address: University of Verona, Verona, Italy
| | - Samuela Francescato
- Pediatric Onco-Hematology Unit, Department of Women's and Children's Health, University of Padova, Padova, Italy
| | - Elisa Belluzzi
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Gattamelata, 64, 35128 Padova, Italy
| | - Assunta Pozzuoli
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Gattamelata, 64, 35128 Padova, Italy
| | - Antonio Berizzi
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Gattamelata, 64, 35128 Padova, Italy.,Orthopedic and Traumatologic Clinic, Azienda Ospedaliera di Padova, Padova, Italy
| | - Pietro Ruggieri
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Gattamelata, 64, 35128 Padova, Italy.,Orthopedic and Traumatologic Clinic, Azienda Ospedaliera di Padova, Padova, Italy
| | - Susanna Mandruzzato
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Gattamelata, 64, 35128 Padova, Italy.,IOV-IRCCS, Padova, Italy
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49
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Rottmann BG, Singh PK, Singh S, Revankar SG, Chandrasekar PH, Kumar A. Evaluation of Susceptibility and Innate Immune Response in C57BL/6 and BALB/c Mice During Candida albicans Endophthalmitis. Invest Ophthalmol Vis Sci 2020; 61:31. [PMID: 32940660 PMCID: PMC7500134 DOI: 10.1167/iovs.61.11.31] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022] Open
Abstract
Purpose Candida remains the leading cause of fungal endophthalmitis. However, the pathobiology and innate immune responses in this disease are not well characterized. Here, we developed two murine models of candida endophthalmitis and evaluated their disease susceptibility and differential immune response. Methods Endophthalmitis was induced in C57BL/6 (B6) and BALB/c mice by intravitreal injection of Candida albicans (CA). Disease progression was monitored by slit-lamp examination and clinical scoring, followed by retinal function assessment using electroretinography (ERG). Enucleated eyes were used to estimate fungal burden and retinal tissue damage by hematoxylin and eosin and TUNEL staining. The level of inflammatory mediators were determined by quantitative Polymerase Chain Reaction (qPCR) and enzyme-linked immunosorbent assay, whereas neutrophil infiltration was assessed by flow cytometry and immunostaining. Results Intravitreal injection of CA at 6500 colony-forming units resulted in sustained (non-resolving) ocular inflammation in both B6 and BALB/c mice as evidenced by increased levels of inflammatory cytokines (tumor necrosis factor-α, interleukin-1β, and interleukin-6) and chemokine (CXCL2/MIP-2). In both mouse strains, fungal burden peaked at 24 to 48 hours post-infection (hpi) and decreased by 72 to 96 hpi. CA-infected eyes exhibited increased polymorphonuclear neutrophils (PMN) infiltration and retinal tissue damage. Overall retinal function declined rapidly, with a significant reduction in ERG response at 12 hpi and near-total loss by 24 hpi. Differential analyses revealed increased pathology in BALB/c versus B6 mice. Conclusions C. albicans was able to cause endophthalmitis in mice. Although BALB/c mice were found to be more susceptible to CA endophthalmitis, both BALB/c and B6 models could be used to study fungal endophthalmitis and test therapeutic modalities.
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Affiliation(s)
- Bruce G. Rottmann
- Department of Ophthalmology, Visual, and Anatomical Sciences, Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Pawan Kumar Singh
- Department of Ophthalmology, Visual, and Anatomical Sciences, Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Sneha Singh
- Department of Ophthalmology, Visual, and Anatomical Sciences, Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Sanjay G. Revankar
- Division of Infectious Disease, Department of Internal Medicine, Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Pranatharthi H. Chandrasekar
- Division of Infectious Disease, Department of Internal Medicine, Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Ashok Kumar
- Department of Ophthalmology, Visual, and Anatomical Sciences, Wayne State University School of Medicine, Detroit, Michigan, United States
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School of Medicine, Detroit, Michigan, United States
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50
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Cunha LL, Perazzio SF, Azzi J, Cravedi P, Riella LV. Remodeling of the Immune Response With Aging: Immunosenescence and Its Potential Impact on COVID-19 Immune Response. Front Immunol 2020; 11:1748. [PMID: 32849623 PMCID: PMC7427491 DOI: 10.3389/fimmu.2020.01748] [Citation(s) in RCA: 140] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 06/30/2020] [Indexed: 12/14/2022] Open
Abstract
Elderly individuals are the most susceptible to an aggressive form of coronavirus disease (COVID-19), caused by SARS-CoV-2. The remodeling of immune response that is observed among the elderly could explain, at least in part, the age gradient in lethality of COVID-19. In this review, we will discuss the phenomenon of immunosenescence, which entails changes that occur in both innate and adaptive immunity with aging. Furthermore, we will discuss inflamm-aging, a low-grade inflammatory state triggered by continuous antigenic stimulation, which may ultimately increase all-cause mortality. In general, the elderly are less capable of responding to neo-antigens, because of lower naïve T cell frequency. Furthermore, they have an expansion of memory T cells with a shrinkage of the T cell diversity repertoire. When infected by SARS-CoV-2, young people present with a milder disease as they frequently clear the virus through an efficient adaptive immune response. Indeed, antibody-secreting cells and follicular helper T cells are thought to be effectively activated in young patients that present a favorable prognosis. In contrast, the elderly are more prone to an uncontrolled activation of innate immune response that leads to cytokine release syndrome and tissue damage. The failure to trigger an effective adaptive immune response in combination with a higher pro-inflammatory tonus may explain why the elderly do not appropriately control viral replication and the potential clinical consequences triggered by a cytokine storm, endothelial injury, and disseminated organ injury. Enhancing the efficacy of the adaptive immune response may be an important issue both for infection resolution as well as for the appropriate generation of immunity upon vaccination, while inhibiting inflamm-aging will likely emerge as a potential complementary therapeutic approach in the management of patients with severe COVID-19.
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Affiliation(s)
- Lucas Leite Cunha
- Department of Medicine, Escola Paulista de Medicina, Federal University of São Paulo, São Paulo, Brazil
| | - Sandro Felix Perazzio
- Division of Rheumatology, Escola Paulista de Medicina, Federal University of São Paulo, São Paulo, Brazil
| | - Jamil Azzi
- Schuster Transplantation Research Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Paolo Cravedi
- Renal Division, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Leonardo Vidal Riella
- Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.,Department of Surgery, Center for Transplantation Sciences, Massachusetts General Hospital, Boston, MA, United States
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