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Zhou L, Liu Y, Wu Y, Yang X, Spring Kong FM, Lu Y, Xue J. Low-dose radiation therapy mobilizes antitumor immunity: New findings and future perspectives. Int J Cancer 2024; 154:1143-1157. [PMID: 38059788 DOI: 10.1002/ijc.34801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/24/2023] [Accepted: 10/31/2023] [Indexed: 12/08/2023]
Abstract
Radiotherapy has unique immunostimulatory and immunosuppressive effects. Although high-dose radiotherapy has been found to have systemic antitumor effects, clinically significant abscopal effects were uncommon on the basis of irradiating single lesion. Low-dose radiation therapy (LDRT) emerges as a novel approach to enhance the antitumor immune response due to its role as a leverage to reshape the tumor immune microenvironment (TIME). In this article, from bench to bedside, we reviewed the possible immunomodulatory role of LDRT on TIME and systemic tumor immune environment, and outlined preclinical evidence and clinical application. We also discussed the current challenges when LDRT is used as a combination therapy, including the optimal dose, fraction, frequency, and combination of drugs. The advantage of low toxicity makes LDRT potential to be applied in multiple lesions to amplify antitumor immune response in polymetastatic disease, and its intersection with other disciplines might also make it a direction for radiotherapy-combined modalities.
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Affiliation(s)
- Laiyan Zhou
- Division of Thoracic Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Disaster Medical Center, Sichuan University, Chengdu, China
| | - Yuanxin Liu
- Division of Thoracic Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Yuanjun Wu
- Division of Thoracic Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xue Yang
- Division of Thoracic Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Feng-Ming Spring Kong
- Department of Clinical Oncology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - You Lu
- Division of Thoracic Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Clinical Cell Therapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jianxin Xue
- Division of Thoracic Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Clinical Cell Therapy, West China Hospital, Sichuan University, Chengdu, China
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2
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Nunn AVW, Guy GW, Bell JD. Informing the Cannabis Conjecture: From Life's Beginnings to Mitochondria, Membranes and the Electrome-A Review. Int J Mol Sci 2023; 24:13070. [PMID: 37685877 PMCID: PMC10488084 DOI: 10.3390/ijms241713070] [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: 07/28/2023] [Revised: 08/15/2023] [Accepted: 08/17/2023] [Indexed: 09/10/2023] Open
Abstract
Before the late 1980s, ideas around how the lipophilic phytocannabinoids might be working involved membranes and bioenergetics as these disciplines were "in vogue". However, as interest in genetics and pharmacology grew, interest in mitochondria (and membranes) waned. The discovery of the cognate receptor for tetrahydrocannabinol (THC) led to the classification of the endocannabinoid system (ECS) and the conjecture that phytocannabinoids might be "working" through this system. However, the how and the "why" they might be beneficial, especially for compounds like CBD, remains unclear. Given the centrality of membranes and mitochondria in complex organisms, and their evolutionary heritage from the beginnings of life, revisiting phytocannabinoid action in this light could be enlightening. For example, life can be described as a self-organising and replicating far from equilibrium dissipating system, which is defined by the movement of charge across a membrane. Hence the building evidence, at least in animals, that THC and CBD modulate mitochondrial function could be highly informative. In this paper, we offer a unique perspective to the question, why and how do compounds like CBD potentially work as medicines in so many different conditions? The answer, we suggest, is that they can modulate membrane fluidity in a number of ways and thus dissipation and engender homeostasis, particularly under stress. To understand this, we need to embrace origins of life theories, the role of mitochondria in plants and explanations of disease and ageing from an adaptive thermodynamic perspective, as well as quantum mechanics.
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Affiliation(s)
- Alistair V. W. Nunn
- Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London W1W 6UW, UK; (G.W.G.); (J.D.B.)
- The Guy Foundation, Beaminster DT8 3HY, UK
| | - Geoffrey W. Guy
- Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London W1W 6UW, UK; (G.W.G.); (J.D.B.)
- The Guy Foundation, Beaminster DT8 3HY, UK
| | - Jimmy D. Bell
- Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London W1W 6UW, UK; (G.W.G.); (J.D.B.)
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3
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Kyriazis M, Swas L, Orlova T. The Impact of Hormesis, Neuronal Stress Response, and Reproduction, upon Clinical Aging: A Narrative Review. J Clin Med 2023; 12:5433. [PMID: 37629475 PMCID: PMC10455615 DOI: 10.3390/jcm12165433] [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: 06/29/2023] [Revised: 08/05/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
INTRODUCTION The primary objective of researchers in the biology of aging is to gain a comprehensive understanding of the aging process while developing practical solutions that can enhance the quality of life for older individuals. This involves a continuous effort to bridge the gap between fundamental biological research and its real-world applications. PURPOSE In this narrative review, we attempt to link research findings concerning the hormetic relationship between neurons and germ cells, and translate these findings into clinically relevant concepts. METHODS We conducted a literature search using PubMed, Embase, PLOS, Digital Commons Network, Google Scholar and Cochrane Library from 2000 to 2023, analyzing studies dealing with the relationship between hormetic, cognitive, and reproductive aspects of human aging. RESULTS The process of hormesis serves as a bridge between the biology of neuron-germ cell interactions on one hand, and the clinical relevance of these interactions on the other. Details concerning these processes are discussed here, emphasizing new research which strengthens the overall concept. CONCLUSIONS This review presents a scientifically and clinically relevant argument, claiming that maintaining a cognitively active lifestyle may decrease age-related degeneration, and improve overall health in aging. This is a totally novel approach which reflects current developments in several relevant aspects of our biology, technology, and society.
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Abstract
The proteostasis network (PN) regulates protein synthesis, folding, and degradation and is critical for the health and function of all cells. The PN has been extensively studied in the context of aging and age-related diseases, and loss of proteostasis is regarded as a major contributor to many age-associated disorders. In contrast to somatic tissues, an important feature of germ cells is their ability to maintain a healthy proteome across generations. Accumulating evidence has now revealed multiple layers of PN regulation that support germ cell function, determine reproductive capacity during aging, and prioritize reproduction at the expense of somatic health. Here, we review recent insights into these different modes of regulation and their implications for reproductive and somatic aging.
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5
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Lumniczky K, Impens N, Armengol G, Candéias S, Georgakilas AG, Hornhardt S, Martin OA, Rödel F, Schaue D. Low dose ionizing radiation effects on the immune system. ENVIRONMENT INTERNATIONAL 2021; 149:106212. [PMID: 33293042 PMCID: PMC8784945 DOI: 10.1016/j.envint.2020.106212] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/20/2020] [Accepted: 09/03/2020] [Indexed: 05/03/2023]
Abstract
Ionizing radiation interacts with the immune system in many ways with a multiplicity that mirrors the complexity of the immune system itself: namely the need to maintain a delicate balance between different compartments, cells and soluble factors that work collectively to protect, maintain, and restore tissue function in the face of severe challenges including radiation damage. The cytotoxic effects of high dose radiation are less relevant after low dose exposure, where subtle quantitative and functional effects predominate that may go unnoticed until late after exposure or after a second challenge reveals or exacerbates the effects. For example, low doses may permanently alter immune fitness and therefore accelerate immune senescence and pave the way for a wide spectrum of possible pathophysiological events, including early-onset of age-related degenerative disorders and cancer. By contrast, the so called low dose radiation therapy displays beneficial, anti-inflammatory and pain relieving properties in chronic inflammatory and degenerative diseases. In this review, epidemiological, clinical and experimental data regarding the effects of low-dose radiation on the homeostasis and functional integrity of immune cells will be discussed, as will be the role of immune-mediated mechanisms in the systemic manifestation of localized exposures such as inflammatory reactions. The central conclusion is that ionizing radiation fundamentally and durably reshapes the immune system. Further, the importance of discovery of immunological pathways for modifying radiation resilience amongst other research directions in this field is implied.
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Affiliation(s)
- Katalin Lumniczky
- National Public Health Centre, Department of Radiation Medicine, Budapest, Albert Florian u. 2-6, 1097, Hungary.
| | - Nathalie Impens
- Belgian Nuclear Research Centre, Biosciences Expert Group, Boeretang 200, 2400 Mol, Belgium.
| | - Gemma Armengol
- Unit of Biological Anthropology, Department of Animal Biology, Plant Biology and Ecology, Faculty of Biosciences, Universitat Autònoma de Barcelona, 08193-Bellaterra, Barcelona, Catalonia, Spain.
| | - Serge Candéias
- Université Grenoble-Alpes, CEA, CNRS, IRIG-LCBM, 38000 Grenoble, France.
| | - Alexandros G Georgakilas
- DNA Damage Laboratory, Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens (NTUA), Zografou 15780, Athens, Greece.
| | - Sabine Hornhardt
- Federal Office for Radiation Protection (BfS), Ingolstaedter Landstr.1, 85764 Oberschleissheim, Germany.
| | - Olga A Martin
- Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne 3052, Victoria, Australia.
| | - Franz Rödel
- Department of Radiotherapy and Oncology, University Hospital, Goethe University Frankfurt am Main, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
| | - Dörthe Schaue
- Department of Radiation Oncology, David Geffen School of Medicine, University of California at Los Angeles (UCLA), Los Angeles, CA 90095-1714, USA.
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James CD, Das D, Bristol ML, Morgan IM. Activating the DNA Damage Response and Suppressing Innate Immunity: Human Papillomaviruses Walk the Line. Pathogens 2020; 9:E467. [PMID: 32545729 PMCID: PMC7350329 DOI: 10.3390/pathogens9060467] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/08/2020] [Accepted: 06/10/2020] [Indexed: 12/25/2022] Open
Abstract
Activation of the DNA damage response (DDR) by external agents can result in DNA fragments entering the cytoplasm and activating innate immune signaling pathways, including the stimulator of interferon genes (STING) pathway. The consequences of this activation can result in alterations in the cell cycle including the induction of cellular senescence, as well as boost the adaptive immune response following interferon production. Human papillomaviruses (HPV) are the causative agents in a host of human cancers including cervical and oropharyngeal; HPV are responsible for around 5% of all cancers. During infection, HPV replication activates the DDR in order to promote the viral life cycle. A striking feature of HPV-infected cells is their ability to continue to proliferate in the presence of an active DDR. Simultaneously, HPV suppress the innate immune response using a number of different mechanisms. The activation of the DDR and suppression of the innate immune response are essential for the progression of the viral life cycle. Here, we describe the mechanisms HPV use to turn on the DDR, while simultaneously suppressing the innate immune response. Pushing HPV from this fine line and tipping the balance towards activation of the innate immune response would be therapeutically beneficial.
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Affiliation(s)
- Claire D. James
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University (VCU), Richmond, VA 23298, USA; (C.D.J.); (D.D.); (M.L.B.)
| | - Dipon Das
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University (VCU), Richmond, VA 23298, USA; (C.D.J.); (D.D.); (M.L.B.)
| | - Molly L. Bristol
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University (VCU), Richmond, VA 23298, USA; (C.D.J.); (D.D.); (M.L.B.)
| | - Iain M. Morgan
- Philips Institute for Oral Health Research, School of Dentistry, Virginia Commonwealth University (VCU), Richmond, VA 23298, USA; (C.D.J.); (D.D.); (M.L.B.)
- VCU Massey Cancer Center, Richmond, VA 23298, USA
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7
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Zhang W, Xie R, Zhang XD, Lee LTO, Zhang H, Yang M, Peng B, Zheng J. Organism dual RNA-seq reveals the importance of BarA/UvrY in Vibrio parahaemolyticus virulence. FASEB J 2020; 34:7561-7577. [PMID: 32281204 DOI: 10.1096/fj.201902630r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 03/17/2020] [Accepted: 03/23/2020] [Indexed: 01/12/2023]
Abstract
Elucidation of host-pathogen interaction is essential for developing effective strategies to combat bacterial infection. Dual RNA-Seq using cultured cells or tissues/organs as the host of pathogen has emerged as a novel strategy to understand the responses concurrently from both pathogen and host at cellular level. However, bacterial infection mostly causes systematic responses from the host at organism level where the interplay is urgently to be understood but inevitably being neglected by the current practice. Here, we developed an approach that simultaneously monitor the genome-wide infection-linked transcriptional alterations in both pathogenic Vibrio parahaemolyticus and the infection host nematode Caenorhabditis elegans. Besides the dynamic alterations in transcriptomes of both C. elegans and V. parahaemolyticus during infection, we identify a two-component system, BarA/UvrY, that is important for virulence in host. BarA/UvrY not only controls the virulence factors in V. parahaemolyticus including Type III and Type VI secretion systems, but also attenuates innate immune responses in C. elegans, including repression on the MAP kinase-mediated cascades. Thus, our study exemplifies the use of dual RNA-Seq at organism level to uncover previously unrecognized interplay between host and pathogen.
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Affiliation(s)
- Wenwen Zhang
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Ruiqiang Xie
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | | | - Leo Tsz On Lee
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Hongjie Zhang
- Faculty of Health Sciences, University of Macau, Macau SAR, China
| | - Menghua Yang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou, China
| | - Bo Peng
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jun Zheng
- Faculty of Health Sciences, University of Macau, Macau SAR, China.,Institute of Translational Medicine, University of Macau, Macau SAR, China
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8
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Kyriazis M. Ageing Throughout History: The Evolution of Human Lifespan. J Mol Evol 2019; 88:57-65. [PMID: 31197416 DOI: 10.1007/s00239-019-09896-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 06/06/2019] [Indexed: 12/20/2022]
Abstract
It is not surprising that one of the most complex phenomena in nature is that of ageing. It does not only bear biological interest, but it is also associated with cultural, psychological, social and even philosophical issues. It is therefore to be expected that a great deal of research is being performed in order to study the evolution of ageing and, more specifically, the evolution of human ageing. Historical aspects of this evolution will be discussed. Evidence from a variety of sources shows that the human lifespan is increasing, and may well continue to increase to levels that are difficult to predict. In addition, the most important theories about ageing based on evolutionary principles will be examined. Examples are mutation accumulation, antagonistic pleiotropy and the disposable soma theory. Finally, a section about future evolution of human ageing, based upon newly emerging research, will shed some light and provide speculative-provocative ideas about the future of ageing in humans.
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9
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García-Rodríguez FJ, Martínez-Fernández C, Brena D, Kukhtar D, Serrat X, Nadal E, Boxem M, Honnen S, Miranda-Vizuete A, Villanueva A, Cerón J. Genetic and cellular sensitivity of Caenorhabditis elegans to the chemotherapeutic agent cisplatin. Dis Model Mech 2018; 11:dmm.033506. [PMID: 29752286 PMCID: PMC6031354 DOI: 10.1242/dmm.033506] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 04/10/2018] [Indexed: 12/13/2022] Open
Abstract
Cisplatin and derivatives are commonly used as chemotherapeutic agents. Although the cytotoxic action of cisplatin on cancer cells is very efficient, clinical oncologists need to deal with two major difficulties, namely the onset of resistance to the drug and the cytotoxic effect in patients. Here, we used Caenorhabditis elegans to investigate factors influencing the response to cisplatin in multicellular organisms. In this hermaphroditic model organism, we observed that sperm failure is a major cause of cisplatin-induced infertility. RNA sequencing data indicate that cisplatin triggers a systemic stress response, in which DAF-16/FOXO and SKN-1/NRF2, two conserved transcription factors, are key regulators. We determined that inhibition of the DNA damage-induced apoptotic pathway does not confer cisplatin protection to the animal. However, mutants for the pro-apoptotic BH3-only gene ced-13 are sensitive to cisplatin, suggesting a protective role of the intrinsic apoptotic pathway. Finally, we demonstrated that our system can also be used to identify mutations providing resistance to cisplatin and therefore potential biomarkers of innate cisplatin-refractory patients. We show that mutants for the redox regulator trxr-1, ortholog of the mammalian thioredoxin reductase 1 TRXR1, display cisplatin resistance. By CRISPR/Cas9, we determined that such resistance relies on the presence of the single selenocysteine residue in TRXR-1. This article has an associated First Person interview with the first author of the paper. Summary:Caenorhabditiselegans is a valuable model to identify genetic factors influencing the animal response to the widely used chemotherapeutic agent cisplatin.
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Affiliation(s)
- Francisco Javier García-Rodríguez
- Modeling human diseases in C. elegans. Genes, Diseases and Therapies Program, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, 08908 Barcelona, Spain.,Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology (ICO), Bellvitge Institute for Biomedical Research (IDIBELL), L'Hospitalet del Llobregat, 08908 Barcelona, Spain
| | - Carmen Martínez-Fernández
- Modeling human diseases in C. elegans. Genes, Diseases and Therapies Program, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - David Brena
- Modeling human diseases in C. elegans. Genes, Diseases and Therapies Program, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - Dmytro Kukhtar
- Modeling human diseases in C. elegans. Genes, Diseases and Therapies Program, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - Xènia Serrat
- Modeling human diseases in C. elegans. Genes, Diseases and Therapies Program, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - Ernest Nadal
- Thoracic Oncology Unit, Department of Medical Oncology, Catalan Institute of Oncology (ICO), L'Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - Mike Boxem
- Division of Developmental Biology, Department of Biology, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Sebastian Honnen
- Heinrich Heine University Düsseldorf, Medical Faculty, Institute of Toxicology, D-40225 Düsseldorf, Germany
| | - Antonio Miranda-Vizuete
- Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, E-41013 Sevilla, Spain
| | - Alberto Villanueva
- Program Against Cancer Therapeutic Resistance (ProCURE), Catalan Institute of Oncology (ICO), Bellvitge Institute for Biomedical Research (IDIBELL), L'Hospitalet del Llobregat, 08908 Barcelona, Spain
| | - Julián Cerón
- Modeling human diseases in C. elegans. Genes, Diseases and Therapies Program, Bellvitge Biomedical Research Institute - IDIBELL, L'Hospitalet de Llobregat, 08908 Barcelona, Spain
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Najafi M, Motevaseli E, Shirazi A, Geraily G, Rezaeyan A, Norouzi F, Rezapoor S, Abdollahi H. Mechanisms of inflammatory responses to radiation and normal tissues toxicity: clinical implications. Int J Radiat Biol 2018; 94:335-356. [DOI: 10.1080/09553002.2018.1440092] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Masoud Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Science, Kermanshah, Iran
| | - Elahe Motevaseli
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Shirazi
- Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ghazale Geraily
- Department of Medical Physics and Biomedical Engineering, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Abolhasan Rezaeyan
- Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Farzad Norouzi
- Science and Research Branch, Azad University, Tehran, Iran
| | - Saeed Rezapoor
- Department of Radiology, Faculty of Paramedical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Abdollahi
- Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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11
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Immune and inflammatory responses to DNA damage in cancer and aging. Mech Ageing Dev 2016; 165:10-16. [PMID: 27720808 DOI: 10.1016/j.mad.2016.10.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 10/03/2016] [Accepted: 10/04/2016] [Indexed: 02/06/2023]
Abstract
Genome instability is a hallmark of both cancer and aging processes. Beyond cell-autonomous responses, it is known that DNA damage also elicits systemic mechanisms aimed at favoring survival and damaged cells clearance. Among these mechanisms, immune activation and NF-κB-mediated inflammation play central roles in organismal control of DNA damage. We focus herein on the different experimental evidences that have allowed gaining mechanistic insight about this relationship. We also describe the functional consequences of defective immune function in cancer development and age-related alterations. Finally, we discuss different intervention strategies based on enhancing immunity or on the modulation of the inflammatory response to improve organism homeostasis in cancer and aging.
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12
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13
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Georgakilas AG, Gorgoulis VG. Systemic dna damage: Mechanisms, effects and mitigation strategies. Semin Cancer Biol 2016; 37-38:1-2. [PMID: 27113557 DOI: 10.1016/j.semcancer.2016.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Alexandros G Georgakilas
- DNA Damage Laboratory, Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou 15780, Athens, Greece.
| | - Vassilis G Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, School of Medicine, University of Athens, Athens, Greece; Biomedical Research Foundation, Academy of Athens, Athens, Greece; Faculty Institute of Cancer Sciences, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
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14
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Abstract
The nematode worm Caenorhabditis elegans comprises an ancestral immune system. C. elegans recognizes and responds to viral, bacterial, and fungal infections. Components of the RNA interference machinery respond to viral infection, while highly conserved MAPK signaling pathways activate the innate immune response to bacterial infection. C. elegans has been particularly important for exploring the role of innate immunity in organismal stress resistance and the regulation of longevity. Also functions of neuronal sensing of infectious bacteria have recently been uncovered. Studies on nematode immunity can be instructive in exploring innate immune signaling in the absence of specialized immune cells and adaptive immunity.
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15
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Ermolaeva MA, Schumacher B. Systemic DNA damage responses: organismal adaptations to genome instability. Trends Genet 2014; 30:95-102. [PMID: 24439457 DOI: 10.1016/j.tig.2013.12.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 12/16/2013] [Accepted: 12/18/2013] [Indexed: 12/19/2022]
Abstract
DNA damage checkpoints are important tumor-suppressor mechanisms that halt cell cycle progression to allow time for DNA repair, or induce senescence and apoptosis to remove damaged cells permanently. Non-cell-autonomous DNA damage responses activate the innate immune system in multiple metazoan species. These responses not only enable clearance of damaged cells and contribute to tissue remodeling and regeneration but can also result in chronic inflammation and tissue damage. Germline DNA damage-induced systemic stress resistance (GDISR) is mediated by an ancestral innate immune response and results in organismal adjustments to the presence of damaged cells. We discuss GDISR as an organismal DNA damage checkpoint mechanism through which elevated somatic endurance can extend reproductive lifespan when germ cells require extended time for restoring genome stability.
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Affiliation(s)
- Maria A Ermolaeva
- Institute for Genome Stability in Ageing and Disease, Medical Faculty, University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), Institute for Genetics, University of Cologne, Zülpicher Strasse 47a, 50674 Cologne, Germany
| | - Björn Schumacher
- Institute for Genome Stability in Ageing and Disease, Medical Faculty, University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), Institute for Genetics, University of Cologne, Zülpicher Strasse 47a, 50674 Cologne, Germany; Systems Biology of Ageing Cologne, University of Cologne, 50937 Cologne, Germany.
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