1
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Yu KN. Radiation-Induced Rescue Effect: Insights from Microbeam Experiments. BIOLOGY 2022; 11:1548. [PMID: 36358251 PMCID: PMC9687443 DOI: 10.3390/biology11111548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/20/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
The present paper reviews a non-targeted effect in radiobiology known as the Radiation-Induced Rescue Effect (RIRE) and insights gained from previous microbeam experiments on RIRE. RIRE describes the mitigation of radiobiological effects in targeted irradiated cells after they receive feedback signals from co-cultured non-irradiated bystander cells, or from the medium previously conditioning those co-cultured non-irradiated bystander cells. RIRE has established or has the potential of establishing relationships with other non-traditional new developments in the fields of radiobiology, including Radiation-Induced Bystander Effect (RIBE), Radiation-Induced Field Size Effect (RIFSE) and ultra-high dose rate (FLASH) effect, which are explained. The paper first introduces RIRE, summarizes previous findings, and surveys the mechanisms proposed for observations. Unique opportunities offered by microbeam irradiations for RIRE research and some previous microbeam studies on RIRE are then described. Some thoughts on future priorities and directions of research on RIRE exploiting unique features of microbeam radiations are presented in the last section.
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Affiliation(s)
- Kwan Ngok Yu
- Department of Physics, City University of Hong Kong, Hong Kong, China
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2
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Zhao W, Yuan P, Hu N, Long D, Ding D, Wang H. Effects of Low-Dose Gamma-Ray Radiation on Apoptosis and Development of Zebrafish Embryo Brain. Radiat Res 2020; 194:61-70. [PMID: 32352865 DOI: 10.1667/rr15426.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 03/27/2020] [Indexed: 11/03/2022]
Abstract
To investigate the effects of low-dose γ irradiation on apoptosis and development of the brain in zebrafish embryos, cumulative 15 mGy doses of γ rays from a 137Cs source were used to irradiate zebrafish embryos at 2 h post-fertilization (hpf) for 120 h. Apoptosis of the brain, brain morphological development, cell submicroscopic structure and mRNA expression were analyzed, respectively. Results indicate that after 15 mGy exposure, the apoptosis of zebrafish brain increased, vacuoles appeared in brain tissue, some organelles were damaged and vacuoles appeared locally in brain cells. The mRNA expression level of axin2 was significantly upregulated, and those of frizzled, β-catenin, camk2, TCF/ LEF and bcl9 were significantly downregulated in brain tissue. These genes are involved in the Wnt signaling pathway. The findings of this work suggest that low-dose radiation may influence the apoptosis and development of the brain in the zebrafish embryo by inhibiting the Wnt signaling pathway.
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Affiliation(s)
- Weichao Zhao
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, China.,School of Public Health, University of South China, Hunan Hengyang 421001, China
| | - Penghui Yuan
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, China.,Hunan Province Key Laboratory of Green Development Technology for Extremely Low Grade Uranium Resources, Hengyang, Hunan 421001, China
| | - Nan Hu
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, China.,Hunan Province Key Laboratory of Green Development Technology for Extremely Low Grade Uranium Resources, Hengyang, Hunan 421001, China
| | - Dingxin Long
- School of Public Health, University of South China, Hunan Hengyang 421001, China
| | - Dexin Ding
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, China.,Hunan Province Key Laboratory of Green Development Technology for Extremely Low Grade Uranium Resources, Hengyang, Hunan 421001, China
| | - Huimin Wang
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, China.,Hunan Province Key Laboratory of Green Development Technology for Extremely Low Grade Uranium Resources, Hengyang, Hunan 421001, China
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3
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Guirandy N, Gagnaire B, Frelon S, Munch T, Dubourg N, Camilleri V, Cavalié I, Floriani M, Arcanjo C, Murat El Houdigui S, Armant O, Adam-Guillermin C, Gonzalez P, Simon O. Adverse effects induced by chronic gamma irradiation in progeny of adult fish not affecting parental reproductive performance. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:2556-2567. [PMID: 31393625 DOI: 10.1002/etc.4562] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/11/2019] [Accepted: 08/01/2019] [Indexed: 06/10/2023]
Abstract
Multigenerational studies have become of great interest in ecotoxicology since the consequence of parental exposure to contaminants on offspring generations was established in situ or in laboratory conditions. The present study mainly examined the chronic effects of external Cs-137 gamma irradiation exposure at 4 dose rates (control, 0.5, 5, and 50 mGy h-1 ) on adult zebrafish (F0) exposed for 10 d and their progeny (F1) exposed or unexposed for 4 to 5 d. The main endpoints investigated included parental reproductive performance, embryo-larval survival, DNA alterations, and reactive oxygen species (ROS) production in F0 and F1. No effects on reproductive success, fecundity, or egg fertilization rate were observed. However, drastic effects were observed on F1 exposed to 50 mGy h-1 , resulting in a mortality rate of 100%. The drastic effects were also observed when the progeny was not irradiated. It was demonstrated that the sensitivity of the embryos was mainly attributable to parental irradiation. Moreover, these drastic effects induced by adult irradiation disappeared over time when 10 d-irradiated adults were placed in a nonirradiated condition. Alterations in larval DNA were observed for the 3 dose rates, and an increase of ROS production was also shown for the 2 lowest dose rates. The present study improves our understanding of the consequences of parental exposure conditions to the progeny. Furthermore, it provides an incentive to take transmitted generational effects into account in ecological risk assessments. Environ Toxicol Chem 2019;38:2556-2567. © 2019 SETAC.
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Affiliation(s)
- Noémie Guirandy
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Béatrice Gagnaire
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Sandrine Frelon
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Thomas Munch
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Nicolas Dubourg
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Virginie Camilleri
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Isabelle Cavalié
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Magali Floriani
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Caroline Arcanjo
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Sophia Murat El Houdigui
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Olivier Armant
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | - Christelle Adam-Guillermin
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
| | | | - Olivier Simon
- Institut de Radioprotection et de Surêté Nucléaire, PSE-ENV/SRTE/LECO, Cadarache, Saint Paul-lez-Durance, France
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4
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Mansell E, Zareian N, Malouf C, Kapeni C, Brown N, Badie C, Baird D, Lane J, Ottersbach K, Blair A, Case CP. DNA damage signalling from the placenta to foetal blood as a potential mechanism for childhood leukaemia initiation. Sci Rep 2019; 9:4370. [PMID: 30867444 PMCID: PMC6416312 DOI: 10.1038/s41598-019-39552-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 11/05/2018] [Indexed: 01/08/2023] Open
Abstract
For many diseases with a foetal origin, the cause for the disease initiation remains unknown. Common childhood acute leukaemia is thought to be caused by two hits, the first in utero and the second in childhood in response to infection. The mechanism for the initial DNA damaging event are unknown. Here we have used in vitro, ex vivo and in vivo models to show that a placental barrier will respond to agents that are suspected of initiating childhood leukaemia by releasing factors that cause DNA damage in cord blood and bone marrow cells, including stem cells. We show that DNA damage caused by in utero exposure can reappear postnatally after an immune challenge. Furthermore, both foetal and postnatal DNA damage are prevented by prenatal exposure of the placenta to a mitochondrially-targeted antioxidant. We conclude that the placenta might contribute to the first hit towards leukaemia initiation by bystander-like signalling to foetal haematopoietic cells.
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Affiliation(s)
- Els Mansell
- School of Clinical Science, University of Bristol, Learning and Research Centre, Southmead Hospital, Bristol, UK.
| | - Nahid Zareian
- School of Clinical Science, University of Bristol, Learning and Research Centre, Southmead Hospital, Bristol, UK
| | - Camille Malouf
- MRC Centre for Regenerative Medicine, SCRM Building, The University of Edinburgh, Edinburgh Bioquarter 5 Little France Drive, Edinburgh, UK
| | - Chrysa Kapeni
- MRC Centre for Regenerative Medicine, SCRM Building, The University of Edinburgh, Edinburgh Bioquarter 5 Little France Drive, Edinburgh, UK
| | - Natalie Brown
- Cancer Mecanisms and Biomarkers, Department of Radiation Effects, Public Health England's Centre for Radiation, Chemical and Environmental Hazards (CRCE), Chilton, Didcot, Oxon, UK
| | - Christophe Badie
- Cancer Mecanisms and Biomarkers, Department of Radiation Effects, Public Health England's Centre for Radiation, Chemical and Environmental Hazards (CRCE), Chilton, Didcot, Oxon, UK
| | - Duncan Baird
- Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, UK
| | - Jon Lane
- School of Biochemistry, University of Bristol, Bristol, UK
| | - Katrin Ottersbach
- MRC Centre for Regenerative Medicine, SCRM Building, The University of Edinburgh, Edinburgh Bioquarter 5 Little France Drive, Edinburgh, UK
| | - Allison Blair
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
- Bristol Institute for Transfusion Sciences, NHS Blood and Transplant, Filton, UK
| | - C Patrick Case
- School of Clinical Science, University of Bristol, Learning and Research Centre, Southmead Hospital, Bristol, UK
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5
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Lindeman LC, Kamstra JH, Ballangby J, Hurem S, Martín LM, Brede DA, Teien HC, Oughton DH, Salbu B, Lyche JL, Aleström P. Gamma radiation induces locus specific changes to histone modification enrichment in zebrafish and Atlantic salmon. PLoS One 2019; 14:e0212123. [PMID: 30759148 PMCID: PMC6373941 DOI: 10.1371/journal.pone.0212123] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 01/28/2019] [Indexed: 12/14/2022] Open
Abstract
Ionizing radiation is a recognized genotoxic agent, however, little is known about the role of the functional form of DNA in these processes. Post translational modifications on histone proteins control the organization of chromatin and hence control transcriptional responses that ultimately affect the phenotype. The purpose of this study was to investigate effects on chromatin caused by ionizing radiation in fish. Direct exposure of zebrafish (Danio rerio) embryos to gamma radiation (10.9 mGy/h for 3h) induced hyper-enrichment of H3K4me3 at the genes hnf4a, gmnn and vegfab. A similar relative hyper-enrichment was seen at the hnf4a loci of irradiated Atlantic salmon (Salmo salar) embryos (30 mGy/h for 10 days). At the selected genes in ovaries of adult zebrafish irradiated during gametogenesis (8.7 and 53 mGy/h for 27 days), a reduced enrichment of H3K4me3 was observed, which was correlated with reduced levels of histone H3 was observed. F1 embryos of the exposed parents showed hyper-methylation of H3K4me3, H3K9me3 and H3K27me3 on the same three loci, while these differences were almost negligible in F2 embryos. Our results from three selected loci suggest that ionizing radiation can affect chromatin structure and organization, and that these changes can be detected in F1 offspring, but not in subsequent generations.
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Affiliation(s)
- Leif Christopher Lindeman
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Jorke Harmen Kamstra
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Jarle Ballangby
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Selma Hurem
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Leonardo Martín Martín
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
- Faculty of Agropecuary Sciences, University of Camagüey (UC) Ignacio Agramonte Loynaz, Camagüey, Cuba
| | - Dag Anders Brede
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Hans Christian Teien
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Deborah H. Oughton
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Brit Salbu
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Jan Ludvig Lyche
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
| | - Peter Aleström
- Centre for Environmental Radioactivity (CERAD CoE), Norwegian University of Life Sciences, Ås, Norway
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway
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6
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Kamstra JH, Hurem S, Martin LM, Lindeman LC, Legler J, Oughton D, Salbu B, Brede DA, Lyche JL, Aleström P. Ionizing radiation induces transgenerational effects of DNA methylation in zebrafish. Sci Rep 2018; 8:15373. [PMID: 30337673 PMCID: PMC6193964 DOI: 10.1038/s41598-018-33817-w] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 10/06/2018] [Indexed: 01/08/2023] Open
Abstract
Ionizing radiation is known to cause DNA damage, yet the mechanisms underlying potential transgenerational effects of exposure have been scarcely studied. Previously, we observed effects in offspring of zebrafish exposed to gamma radiation during gametogenesis. Here, we hypothesize that these effects are accompanied by changes of DNA methylation possibly inherited by subsequent generations. We assessed DNA methylation in F1 embryos (5.5 hours post fertilization) with whole genome bisulfite sequencing following parental exposure to 8.7 mGy/h for 27 days and found 5658 differentially methylated regions (DMRs). DMRs were predominantly located at known regulatory regions, such as gene promoters and enhancers. Pathway analysis indicated the involvement of DMRs related to similar pathways found with gene expression analysis, such as development, apoptosis and cancers, which could be linked to previous observed developmental defects and genomic instability in the offspring. Follow up of 19 F1 DMRs in F2 and F3 embryos revealed persistent effects up to the F3 generation at 5 regions. These results indicate that ionizing radiation related effects in offspring can be linked to DNA methylation changes that partly can persist over generations. Monitoring DNA methylation could serve as a biomarker to provide an indication of ancestral exposures to ionizing radiation.
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Affiliation(s)
- Jorke H Kamstra
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0033, Oslo, Norway.
| | - Selma Hurem
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0033, Oslo, Norway
| | - Leonardo Martin Martin
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0033, Oslo, Norway.,University of Camagüey, Faculty of Agropecuary Sciences, Camagüey, 70100, Cuba
| | - Leif C Lindeman
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0033, Oslo, Norway.,Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, 1433, Ås, Norway
| | - Juliette Legler
- Institute for Environment, Health and Societies, College of Health and Life Sciences, Brunel University London, Uxbridge, United Kingdom.,Utrecht University, Institute for Risk Assessment Sciences, 3508, TD, Utrecht, The Netherlands
| | - Deborah Oughton
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, 1433, Ås, Norway
| | - Brit Salbu
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, 1433, Ås, Norway
| | - Dag Anders Brede
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, 1433, Ås, Norway
| | - Jan Ludvig Lyche
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0033, Oslo, Norway
| | - Peter Aleström
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0033, Oslo, Norway
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7
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Li X, Zha X, Wang Y, Jia R, Hu B, Zhao B. Toxic effects and foundation of proton radiation on the early-life stage of zebrafish development. CHEMOSPHERE 2018; 200:302-312. [PMID: 29494911 DOI: 10.1016/j.chemosphere.2018.02.141] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 06/08/2023]
Abstract
Proton is a major particle of space radiation environment and a prospective radiotherapy beam. However, its risk needs to be fully evaluated for the understanding and to establish the better protective strategy for astronaut and patient. Zebrafish is an ideal model for the toxicity studies on medicines and environmental genetic toxicants. In the current study, embryos of zebrafish at 24 h post-fertilization (hpf) were exposed to proton beam. Some toxic parameters of embryo-larval development were investigated. Microarray combining with qRT-PCR were used to detect the gene expression situation. Generally, fractions of a variety of abnormal phenotypes of embryos and larvae increased in a dose-dependent manner after irradiation. The copy number of mitochondria, the basal respiration rate and the maximum respiration rate of embryos significantly decreased after irradiation. Microarray data demonstrated that MAPK signaling pathway, cell communication, glycolysis and TGF-β signaling pathway were significantly affected in the irradiated group. The expressions of matrix metallopeptidase 9 (mmp9) and TIMP metallopeptidase inhibitor 2b (timp2b) genes, and enzymatic activity of MMP9 were significantly upregulated in irradiated group. Overall, these results suggest that acute radiation of proton severely affects the development of organism and results in aberration occurrence in the early stage of zebrafish development, which may relates to mitochondrial and glycolytic dysfunction.
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Affiliation(s)
- Xiaoman Li
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China; CAS Key Laboratory of Heavy Ion Radiation Biology and Medicine & Key Laboratory of Space Radiobiology of Gansu Province, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaodan Zha
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China
| | - Yongan Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China
| | - Rong Jia
- CAS Key Laboratory of Heavy Ion Radiation Biology and Medicine & Key Laboratory of Space Radiobiology of Gansu Province, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Burong Hu
- CAS Key Laboratory of Heavy Ion Radiation Biology and Medicine & Key Laboratory of Space Radiobiology of Gansu Province, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| | - Baoquan Zhao
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China.
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8
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Reis P, Lourenço J, Carvalho FP, Oliveira J, Malta M, Mendo S, Pereira R. RIBE at an inter-organismic level: A study on genotoxic effects in Daphnia magna exposed to waterborne uranium and a uranium mine effluent. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 198:206-214. [PMID: 29554637 DOI: 10.1016/j.aquatox.2018.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 03/05/2018] [Accepted: 03/08/2018] [Indexed: 06/08/2023]
Abstract
The induction of RIBE (Radiation Induced Bystander Effect) is a non-target effect of low radiation doses that has already been verified at an inter-organismic level in fish and small mammals. Although the theoretical impact in the field of environmental risk assessment (ERA) is possible, there is a gap of knowledge regarding this phenomenon in invertebrate groups and following environmentally relevant exposures. To understand if RIBE should be considered for ERA of radionuclide-rich wastewaters, we exposed Daphnia magna (<24 h and 5d old) to a 2% diluted uranium mine effluent for 48 h, and to a matching dose of waterborne uranium (55.3 μg L-1). Then the exposed organisms were placed (24 and 48 h) in a clean medium together with non-exposed neonates. The DNA damage observed for the non-exposed organisms was statistically significant after the 24 h cohabitation for both uranium (neonates p = 0.002; 5 d-old daphnids p = <0.001) and uranium mine effluent exposure (only for neonates p = 0.042). After 48 h cohabitation significant results were obtained only for uranium exposure (neonates p = 0.017; 5 d-old daphnids p = 0.013). Although there may be some variability associated to age and exposure duration, the significant DNA damage detected in non-exposed organisms clearly reveals the occurrence of RIBE in D. magna. The data obtained and here presented are a valuable contribution for the discussion about the relevance of RIBE for environmental risk assessment.
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Affiliation(s)
- P Reis
- Department of Biology & GreenUPorto, Faculty of Sciences of the University of Porto, Portugal
| | - J Lourenço
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - F P Carvalho
- Instituto Superior Técnico/Laboratório de Proteção e Segurança Radiológica, Universidade de Lisboa, Estrada Nacional 10, km 139, 2695-066, Bobadela LRS, Portugal
| | - J Oliveira
- Instituto Superior Técnico/Laboratório de Proteção e Segurança Radiológica, Universidade de Lisboa, Estrada Nacional 10, km 139, 2695-066, Bobadela LRS, Portugal
| | - M Malta
- Instituto Superior Técnico/Laboratório de Proteção e Segurança Radiológica, Universidade de Lisboa, Estrada Nacional 10, km 139, 2695-066, Bobadela LRS, Portugal
| | - S Mendo
- Department of Biology & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - R Pereira
- Department of Biology & GreenUPorto, Faculty of Sciences of the University of Porto, Portugal; CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, Porto, Portugal.
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9
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Hurem S, Martín LM, Lindeman L, Brede DA, Salbu B, Lyche JL, Aleström P, Kamstra JH. Parental exposure to gamma radiation causes progressively altered transcriptomes linked to adverse effects in zebrafish offspring. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 234:855-863. [PMID: 29248853 DOI: 10.1016/j.envpol.2017.12.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 11/29/2017] [Accepted: 12/06/2017] [Indexed: 06/07/2023]
Abstract
Ionizing radiation causes a variety of effects, including DNA damage associated to cancers. However, the effects in progeny from irradiated parents is not well documented. Using zebrafish as a model, we previously found that parental exposure to ionizing radiation is associated with effects in offspring, such as increased hatching rates, deformities, increased DNA damage and reactive oxygen species. Here, we assessed short (one month) and long term effects (one year) on gene expression in embryonic offspring (5.5 h post fertilization) from zebrafish exposed during gametogenesis to gamma radiation (8.7 or 53 mGy/h for 27 days, total dose 5.2 or 31 Gy) using mRNA sequencing. One month after exposure, a global change in gene expression was observed in offspring from the 53 mGy/h group, followed by embryonic death at late gastrula, whereas offspring from the 8.7 mGy/h group was unaffected. Interestingly, one year after exposure newly derived embryos from the 8.7 mGy/h group exhibited 2390 (67.7% downregulated) differentially expressed genes. Overlaps in differentially expressed genes and enriched biological pathways were evident between the 53 mGy/h group one month and 8.7 mGy/h one year after exposure, but were oppositely regulated. Pathways could be linked to effects in adults and offspring, such as DNA damage (via Atm signaling) and reproduction (via Gnrh signaling). Comparison with gene expression analysis in directly exposed embryos indicate transferrin a and cytochrome P450 2x6 as possible biomarkers for radiation response in zebrafish. Our results indicate latent effects following ionizing radiation exposure from the lower dose in parents that can be transmitted to offspring and warrants monitoring effects over subsequent generations.
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Affiliation(s)
- Selma Hurem
- Faculty of Veterinary Medicine, Department of Food Safety and Infection Biology, CoE CERAD, Norwegian University of Life Sciences, P.O. Box 8146 Dep., 0033 Oslo, Norway
| | - Leonardo Martín Martín
- Faculty of Veterinary Medicine, Department of Basic Sciences and Aquatic Medicine, CoE CERAD, Norwegian University of Life Sciences, P.O. Box 8146 Dep., 0033 Oslo, Norway; Faculty of Agropecuary Sciences, Department of Morphophysiology, University of Camagüey, 74 650 Camagüey, Cuba
| | - Leif Lindeman
- Faculty of Veterinary Medicine, Department of Basic Sciences and Aquatic Medicine, CoE CERAD, Norwegian University of Life Sciences, P.O. Box 8146 Dep., 0033 Oslo, Norway; Faculty of Environmental Sciences and Natural Resource Management, Institute of Environmental Sciences, Norwegian University of Life Sciences, 1433 Ås, Norway
| | - Dag Anders Brede
- Faculty of Environmental Sciences and Natural Resource Management, Institute of Environmental Sciences, Norwegian University of Life Sciences, 1433 Ås, Norway
| | - Brit Salbu
- Faculty of Environmental Sciences and Natural Resource Management, Institute of Environmental Sciences, Norwegian University of Life Sciences, 1433 Ås, Norway
| | - Jan Ludvig Lyche
- Faculty of Veterinary Medicine, Department of Food Safety and Infection Biology, CoE CERAD, Norwegian University of Life Sciences, P.O. Box 8146 Dep., 0033 Oslo, Norway
| | - Peter Aleström
- Faculty of Veterinary Medicine, Department of Basic Sciences and Aquatic Medicine, CoE CERAD, Norwegian University of Life Sciences, P.O. Box 8146 Dep., 0033 Oslo, Norway
| | - Jorke H Kamstra
- Faculty of Veterinary Medicine, Department of Basic Sciences and Aquatic Medicine, CoE CERAD, Norwegian University of Life Sciences, P.O. Box 8146 Dep., 0033 Oslo, Norway.
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10
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Abstract
PURPOSE Even though the first ultraviolet microbeam was described by S. Tschachotin back in 1912, the development of sophisticated micro-irradiation facilities only began to flourish in the late 1980s. In this article, we highlight significant microbeam experiments, describe the latest microbeam irradiator configurations and critical discoveries made by using the microbeam apparatus. MATERIALS AND METHODS Modern radiological microbeams facilities are capable of producing a beam size of a few micrometers, or even tens of nanometers in size, and can deposit radiation with high precision within a cellular target. In the past three decades, a variety of microbeams has been developed to deliver a range of radiations including charged particles, X-rays, and electrons. Despite the original intention for their development to measure the effects of a single radiation track, the ability to target radiation with microbeams at sub-cellular targets has been extensively used to investigate radiation-induced biological responses within cells. RESULTS Studies conducted using microbeams to target specific cells in a tissue have elucidated bystander responses, and further studies have shown reactive oxygen species (ROS) and reactive nitrogen species (RNS) play critical roles in the process. The radiation-induced abscopal effect, which has a profound impact on cancer radiotherapy, further reaffirmed the importance of bystander effects. Finally, by targeting sub-cellular compartments with a microbeam, we have reported cytoplasmic-specific biological responses. Despite the common dogma that nuclear DNA is the primary target for radiation-induced cell death and carcinogenesis, studies conducted using microbeam suggested that targeted cytoplasmic irradiation induces mitochondrial dysfunction, cellular stress, and genomic instability. A more recent development in microbeam technology includes application of mouse models to visualize in vivo DNA double-strand breaks. CONCLUSIONS Microbeams are making important contributions towards our understanding of radiation responses in cells and tissue models.
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Affiliation(s)
- Jinhua Wu
- a Center for Radiological Research, College of Physicians and Surgeons, Columbia University , New York , NY , USA
| | - Tom K Hei
- a Center for Radiological Research, College of Physicians and Surgeons, Columbia University , New York , NY , USA.,b Department of Environmental Health Sciences, Mailman School of Public Health , Columbia University , New York , NY , USA
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11
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Praveen Kumar MK, Shyama SK, Kashif S, Dubey SK, Avelyno D, Sonaye BH, Kadam Samit B, Chaubey RC. Effects of gamma radiation on the early developmental stages of Zebrafish (Danio rerio). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 142:95-101. [PMID: 28395206 DOI: 10.1016/j.ecoenv.2017.03.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/30/2017] [Accepted: 03/31/2017] [Indexed: 06/07/2023]
Abstract
The zebrafish is gaining importance as a popular vertebrate model organism and is widely employed in ecotoxicological studies, especially for the biomonitoring of pollution in water bodies. There is limited data on the genetic mechanisms governing the adverse health effects in regards to an early developmental exposure to gamma radiation. In the present study zebrafish (Danio rerio) embryos were exposed to 1, 2.5, 5, 7.5 and 10Gy of gamma radiation at 3h post fertilization (hpf). Different developmental toxicity endpoints were investigated. Further, expression of genes associated with the development and DNA damage i.e. (sox2 sox19a and p53) were evaluated using Quantitative PCR (qPCR). The significant changes in the expression of sox2 sox19a and p53 genes were observed. This data was supported the developmental defects observed in the zebrafish embryo exposed to gamma radiation such as i.e. increased DNA damage, decreased hatching rate, increase in median hatching time, decreased body length, increased mortality rate, increased morphological deformities. Further, study shows that the potential ecotoxicological threat of gamma radiation on the early developmental stages of zebrafish. Further, it revealed that the above parameters can be used as predictive biomarkers of gamma radiation exposure.
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Affiliation(s)
| | - S K Shyama
- Department of Zoology, Goa University, Goa 403 206, India.
| | - Shamim Kashif
- Department of Microbiology, Goa University, Goa 403 206, India
| | - S K Dubey
- Department of Microbiology, Goa University, Goa 403 206, India
| | | | - B H Sonaye
- Department of Radiation Oncology, Goa Medical College, Goa, India
| | - B Kadam Samit
- Department of Zoology, Goa University, Goa 403 206, India
| | - R C Chaubey
- Radiation Biology & Health Science Division, Bhabha Atomic Research Centre, Mumbai, India
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12
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Photon hormesis deactivates alpha-particle induced bystander effects between zebrafish embryos. Radiat Phys Chem Oxf Engl 1993 2017. [DOI: 10.1016/j.radphyschem.2016.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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13
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Ng CYP, Cheng SH, Yu KN. Effect of Photon Hormesis on Dose Responses to Alpha Particles in Zebrafish Embryos. Int J Mol Sci 2017; 18:E385. [PMID: 28208665 PMCID: PMC5343920 DOI: 10.3390/ijms18020385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/03/2017] [Accepted: 02/08/2017] [Indexed: 01/23/2023] Open
Abstract
Photon hormesis refers to the phenomenon where the biological effect of ionizing radiation with a high linear energy transfer (LET) value is diminished by photons with a low LET value. The present paper studied the effect of photon hormesis from X-rays on dose responses to alpha particles using embryos of the zebrafish (Danio rerio) as the in vivo vertebrate model. The toxicity of these ionizing radiations in the zebrafish embryos was assessed using the apoptotic counts at 20, 24, or 30 h post fertilization (hpf) revealed through acridine orange (AO) staining. For alpha-particle doses ≥ 4.4 mGy, the additional X-ray dose of 10 mGy significantly reduced the number of apoptotic cells at 24 hpf, which proved the presence of photon hormesis. Smaller alpha-particle doses might not have inflicted sufficient aggregate damages to trigger photon hormesis. The time gap T between the X-ray (10 mGy) and alpha-particle (4.4 mGy) exposures was also studied. Photon hormesis was present when T ≤ 30 min, but was absent when T = 60 min, at which time repair of damage induced by alpha particles would have completed to prevent their interactions with those induced by X-rays. Finally, the drop in the apoptotic counts at 24 hpf due to photon hormesis was explained by bringing the apoptotic events earlier to 20 hpf, which strongly supported the removal of aberrant cells through apoptosis as an underlying mechanism for photon hormesis.
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Affiliation(s)
- Candy Yuen Ping Ng
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China.
| | - Shuk Han Cheng
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong, China.
| | - Kwan Ngok Yu
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China.
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong, China.
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14
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Lemos J, Neuparth T, Trigo M, Costa P, Vieira D, Cunha L, Ponte F, Costa PS, Metello LF, Carvalho AP. Single Low-Dose Ionizing Radiation Induces Genotoxicity in Adult Zebrafish and its Non-Irradiated Progeny. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 98:190-195. [PMID: 28025689 DOI: 10.1007/s00128-016-2006-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 12/08/2016] [Indexed: 06/06/2023]
Abstract
This study investigated to what extent a single exposure to low doses of ionizing radiation can induce genotoxic damage in irradiated adult zebrafish (Danio rerio) and its non-irradiated F1 progeny. Four groups of adult zebrafish were irradiated with a single dose of X-rays at 0 (control), 100, 500 and 1000 mGy, respectively, and couples of each group were allowed to reproduce following irradiation. Blood of parental fish and whole-body offspring were analysed by the comet assay for detection of DNA damage. The level of DNA damage in irradiated parental fish increased in a radiation dose-dependent manner at day 1 post-irradiation, but returned to the control level thereafter. The level of DNA damage in the progeny was directly correlated with the parental irradiation dose. Results highlight the genotoxic risk of a single exposure to low-dose ionizing radiation in irradiated individuals and also in its non-irradiated progeny.
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Affiliation(s)
- J Lemos
- ICBAS - Institute of Biomedical Sciences, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
| | - T Neuparth
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123, Porto, Portugal
| | - M Trigo
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal
| | - P Costa
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
| | - D Vieira
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
| | - L Cunha
- IsoPor SA, PO box 4028, 4445, Ermesinde, Portugal
| | - F Ponte
- Radiotherapy Deptartment, Júlio Teixeira SA, Rua Arquitecto Cassiano Barbosa 6, F, Sala 26, 4100-009, Porto, Portugal
| | - P S Costa
- Radiotherapy Deptartment, Júlio Teixeira SA, Rua Arquitecto Cassiano Barbosa 6, F, Sala 26, 4100-009, Porto, Portugal
| | - L F Metello
- Nuclear Medicine Department, High Institute for Allied Health Technologies of Porto - Polytechnic Institute of Porto (ESTSP.IPP), Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal
- IsoPor SA, PO box 4028, 4445, Ermesinde, Portugal
| | - A P Carvalho
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123, Porto, Portugal.
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4169-007, Porto, Portugal.
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15
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Kong EY, Cheng SH, Yu KN. Zebrafish as an In Vivo Model to Assess Epigenetic Effects of Ionizing Radiation. Int J Mol Sci 2016; 17:ijms17122108. [PMID: 27983682 PMCID: PMC5187908 DOI: 10.3390/ijms17122108] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 12/01/2016] [Accepted: 12/09/2016] [Indexed: 12/14/2022] Open
Abstract
Exposure to ionizing radiations (IRs) is ubiquitous in our environment and can be categorized into “targeted” effects and “non-targeted” effects. In addition to inducing deoxyribonucleic acid (DNA) damage, IR exposure leads to epigenetic alterations that do not alter DNA sequence. Using an appropriate model to study the biological effects of radiation is crucial to better understand IR responses as well as to develop new strategies to alleviate exposure to IR. Zebrafish, Danio rerio, is a scientific model organism that has yielded scientific advances in several fields and recent studies show the usefulness of this vertebrate model in radiation biology. This review briefly describes both “targeted” and “non-targeted” effects, describes the findings in radiation biology using zebrafish as a model and highlights the potential of zebrafish to assess the epigenetic effects of IR, including DNA methylation, histone modifications and miRNA expression. Other in vivo models are included to compare observations made with zebrafish, or to illustrate the feasibility of in vivo models when the use of zebrafish was unavailable. Finally, tools to study epigenetic modifications in zebrafish, including changes in genome-wide DNA methylation, histone modifications and miRNA expression, are also described in this review.
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Affiliation(s)
- Eva Yi Kong
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China.
| | - Shuk Han Cheng
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China.
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong, China.
| | - Kwan Ngok Yu
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, China.
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong, China.
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16
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Hu M, Hu N, Ding D, Zhao W, Feng Y, Zhang H, Li G, Wang Y. Developmental toxicity and oxidative stress induced by gamma irradiation in zebrafish embryos. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2016; 55:441-450. [PMID: 27582010 DOI: 10.1007/s00411-016-0663-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 08/18/2016] [Indexed: 06/06/2023]
Abstract
This study aimed to evaluate the biological effects of gamma irradiation on zebrafish embryos. Different doses of gamma rays (0.01, 0.05, 0.1, 0.5 and 1 Gy) were used to irradiate zebrafish embryos at three developmental stages (stage 1, 6 h post-fertilization (hpf); stage 2, 12 hpf; stage three, 24 hpf), respectively. The survival, malformation and hatching rates of the zebrafish embryos were measured at the morphological endpoint of 96 hpf. The activities of superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), glutathione peroxidase (GPx) and glutathione S-transferase (GST) were assayed. Morphology analysis showed that gamma irradiation inhibited hatching and induced developmental toxicity in a dose-dependent manner. Interestingly, after irradiation the malformation rate changed not only in a dose-dependent manner but also in a developmental stage-dependent manner, indicating that the zebrafish embryos at stage 1 were more sensitive to gamma rays than those at other stages. Biochemical analysis showed that gamma irradiation modulated the activities of antioxidant enzymes in a dose-dependent manner. A linear relationship was found between GPx activity and irradiation dose in 0.1-1 Gy group, and GPx was a suitable biomarker for gamma irradiation in the dose range from 0.1 to 1 Gy. Furthermore, the activities of SOD, CAT, GR and GPx of the zebrafish embryos at stage 3 were found to be much higher than those at other stages, indicating that the zebrafish embryos at stage 3 had a greater ability to protect against gamma rays than those at other stages, and thus the activities of antioxidant enzymes changed in a developmental stage-dependent manner.
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Affiliation(s)
- Miao Hu
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China
| | - Nan Hu
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China
| | - Dexin Ding
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China.
| | - Weichao Zhao
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China
| | - Yongfu Feng
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China
| | - Hui Zhang
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China
| | - Guangyue Li
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China
| | - Yongdong Wang
- Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, Hunan Province, China
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17
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Exogenous Nitric Oxide Suppresses in Vivo X-ray-Induced Targeted and Non-Targeted Effects in Zebrafish Embryos. Int J Mol Sci 2016; 17:ijms17081321. [PMID: 27529238 PMCID: PMC5000718 DOI: 10.3390/ijms17081321] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 07/19/2016] [Accepted: 08/04/2016] [Indexed: 01/07/2023] Open
Abstract
The present paper studied the X-ray-induced targeted effect in irradiated zebrafish embryos (Danio rerio), as well as a non-targeted effect in bystander naïve embryos partnered with irradiated embryos, and examined the influence of exogenous nitric oxide (NO) on these targeted and non-targeted effects. The exogenous NO was generated using an NO donor, S-nitroso-N-acetylpenicillamine (SNAP). The targeted and non-targeted effects, as well as the toxicity of the SNAP, were assessed using the number of apoptotic events in the zebrafish embryos at 24 h post fertilization (hpf) revealed through acridine orange (AO) staining. SNAP with concentrations of 20 and 100 µM were first confirmed to have no significant toxicity on zebrafish embryos. The targeted effect was mitigated in zebrafish embryos if they were pretreated with 100 µM SNAP prior to irradiation with an X-ray dose of 75 mGy but was not alleviated in zebrafish embryos if they were pretreated with 20 µM SNAP. On the other hand, the non-targeted effect was eliminated in the bystander naïve zebrafish embryos if they were pretreated with 20 or 100 µM SNAP prior to partnering with zebrafish embryos having been subjected to irradiation with an X-ray dose of 75 mGy. These findings revealed the importance of NO in the protection against damages induced by ionizing radiations or by radiation-induced bystander signals, and could have important impacts on development of advanced cancer treatment strategies.
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18
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Kong EY, Cheng SH, Yu KN. Biphasic and triphasic dose responses in zebrafish embryos to low-dose 150 kV X-rays with different levels of hardness. JOURNAL OF RADIATION RESEARCH 2016; 57:363-9. [PMID: 26951078 PMCID: PMC4973647 DOI: 10.1093/jrr/rrw026] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 01/26/2016] [Accepted: 02/09/2016] [Indexed: 05/22/2023]
Abstract
The in vivo low-dose responses of zebrafish (Danio rerio) embryos to 150 kV X-rays with different levels of hardness were examined through the number of apoptotic events revealed at 24 h post fertilization by vital dye acridine orange staining. Our results suggested that a triphasic dose response was likely a common phenomenon in living organisms irradiated by X-rays, which comprised an ultra-low-dose inhibition, low-dose stimulation and high-dose inhibition. Our results also suggested that the hormetic zone (or the stimulation zone) was shifted towards lower doses with application of filters. The non-detection of a triphasic dose response in previous experiments could likely be attributed to the use of hard X-rays, which shifted the hormetic zone into an unmonitored ultra-low-dose region. In such cases where the subhormetic zone was missed, a biphasic dose response would be reported instead.
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Affiliation(s)
- Eva Yi Kong
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong
| | - Shuk Han Cheng
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong
| | - Kwan Ngok Yu
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong
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19
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Ng CYP, Kong EY, Kobayashi A, Suya N, Uchihori Y, Cheng SH, Konishi T, Yu KN. Non-induction of radioadaptive response in zebrafish embryos by neutrons. JOURNAL OF RADIATION RESEARCH 2016; 57:210-219. [PMID: 26850927 PMCID: PMC4915534 DOI: 10.1093/jrr/rrv089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 09/13/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023]
Abstract
In vivo neutron-induced radioadaptive response (RAR) was studied using zebrafish (Danio rerio) embryos. The Neutron exposure Accelerator System for Biological Effect Experiments (NASBEE) facility at the National Institute of Radiological Sciences (NIRS), Japan, was employed to provide 2-MeV neutrons. Neutron doses of 0.6, 1, 25, 50 and 100 mGy were chosen as priming doses. An X-ray dose of 2 Gy was chosen as the challenging dose. Zebrafish embryos were dechorionated at 4 h post fertilization (hpf), irradiated with a chosen neutron dose at 5 hpf and the X-ray dose at 10 hpf. The responses of embryos were assessed at 25 hpf through the number of apoptotic signals. None of the neutron doses studied could induce RAR. Non-induction of RAR in embryos having received 0.6- and 1-mGy neutron doses was attributed to neutron-induced hormesis, which maintained the number of damaged cells at below the threshold for RAR induction. On the other hand, non-induction of RAR in embryos having received 25-, 50- and 100-mGy neutron doses was explained by gamma-ray hormesis, which mitigated neutron-induced damages through triggering high-fidelity DNA repair and removal of aberrant cells through apoptosis. Separate experimental results were obtained to verify that high-energy photons could disable RAR. Specifically, 5- or 10-mGy X-rays disabled the RAR induced by a priming dose of 0.88 mGy of alpha particles delivered to 5-hpf zebrafish embryos against a challenging dose of 2 Gy of X-rays delivered to the embryos at 10 hpf.
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Affiliation(s)
- Candy Y P Ng
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong
| | - Eva Y Kong
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong
| | - Alisa Kobayashi
- Research, Development and Support Center, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Noriyoshi Suya
- Research, Development and Support Center, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Yukio Uchihori
- Research, Development and Support Center, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Shuk Han Cheng
- Department of Biomedical Sciences, City University of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong
| | - Teruaki Konishi
- Research, Development and Support Center, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Kwan Ngok Yu
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Ave., Kowloon Tong, Hong Kong
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20
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Role of heme Oxygenase-1 in low dose Radioadaptive response. Redox Biol 2016; 8:333-40. [PMID: 26966892 PMCID: PMC4789341 DOI: 10.1016/j.redox.2016.03.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 02/26/2016] [Accepted: 03/02/2016] [Indexed: 01/19/2023] Open
Abstract
Radioadaptive response (RAR) is an important phenomenon induced by low dose radiation. However, the molecular mechanism of RAR is obscure. In this study, we focused on the possible role of heme oxygenase 1 (HO-1) in RAR. Consistent with previous studies, priming dose of X-ray radiation (1–10 cGy) induced significant RAR in normal human skin fibroblasts (AG 1522 cells). Transcription and translation of HO-1 was up-regulated more than two fold by a priming dose of radiation (5 cGy). Zinc protoporphyrin Ⅸ, a specific competitive inhibitor of HO-1, efficiently inhibited RAR whereas hemin, an inducer of HO-1, could mimic priming dose of X-rays to induce RAR. Knocking down of HO-1 by transfection of HO-1 siRNA significantly attenuated RAR. Furthermore, the expression of HO-1 gene was modulated by the nuclear factor (erythroid-derived 2)-like 2 (Nrf2), which translocated from cytoplasm to nucleus after priming dose radiation and enhance the antioxidant level of cells. The critical role of HO-1 in low dose Radioadaptive response is proposed. Low dose irradiation activates Nrf2 Translocation and HO-1 expression. Nrf2/HO-1 pathway mediates Radioadaptive response via regulating ROS production.
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21
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Nikitaki Z, Mavragani IV, Laskaratou DA, Gika V, Moskvin VP, Theofilatos K, Vougas K, Stewart RD, Georgakilas AG. Systemic mechanisms and effects of ionizing radiation: A new 'old' paradigm of how the bystanders and distant can become the players. Semin Cancer Biol 2016; 37-38:77-95. [PMID: 26873647 DOI: 10.1016/j.semcancer.2016.02.002] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 02/01/2016] [Accepted: 02/07/2016] [Indexed: 12/26/2022]
Abstract
Exposure of cells to any form of ionizing radiation (IR) is expected to induce a variety of DNA lesions, including double strand breaks (DSBs), single strand breaks (SSBs) and oxidized bases, as well as loss of bases, i.e., abasic sites. The damaging potential of IR is primarily related to the generation of electrons, which through their interaction with water produce free radicals. In their turn, free radicals attack DNA, proteins and lipids. Damage is induced also through direct deposition of energy. These types of IR interactions with biological materials are collectively called 'targeted effects', since they refer only to the irradiated cells. Earlier and sometimes 'anecdotal' findings were pointing to the possibility of IR actions unrelated to the irradiated cells or area, i.e., a type of systemic response with unknown mechanistic basis. Over the last years, significant experimental evidence has accumulated, showing a variety of radiation effects for 'out-of-field' areas (non-targeted effects-NTE). The NTE involve the release of chemical and biological mediators from the 'in-field' area and thus the communication of the radiation insult via the so called 'danger' signals. The NTE can be separated in two major groups: bystander and distant (systemic). In this review, we have collected a detailed list of proteins implicated in either bystander or systemic effects, including the clinically relevant abscopal phenomenon, using improved text-mining and bioinformatics tools from the literature. We have identified which of these genes belong to the DNA damage response and repair pathway (DDR/R) and made protein-protein interaction (PPi) networks. Our analysis supports that the apoptosis, TLR-like and NOD-like receptor signaling pathways are the main pathways participating in NTE. Based on this analysis, we formulate a biophysical hypothesis for the regulation of NTE, based on DNA damage and apoptosis gradients between the irradiation point and various distances corresponding to bystander (5mm) or distant effects (5cm). Last but not least, in order to provide a more realistic support for our model, we calculate the expected DSB and non-DSB clusters along the central axis of a representative 200.6MeV pencil beam calculated using Monte Carlo DNA damage simulation software (MCDS) based on the actual beam energy-to-depth curves used in therapy.
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Affiliation(s)
- Zacharenia Nikitaki
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens (NTUA), Zografou, 15780 Athens, Greece
| | - Ifigeneia V Mavragani
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens (NTUA), Zografou, 15780 Athens, Greece
| | - Danae A Laskaratou
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens (NTUA), Zografou, 15780 Athens, Greece
| | - Violeta Gika
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens (NTUA), Zografou, 15780 Athens, Greece
| | - Vadim P Moskvin
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | | | - Konstantinos Vougas
- Proteomics Research Unit, Center of Basic Research II, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Robert D Stewart
- Department of Radiation Oncology, University of Washington School of Medicine, School of Medicine, 1959 NE Pacific Street, Box 356043, Seattle, WA 98195, USA
| | - Alexandros G Georgakilas
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens (NTUA), Zografou, 15780 Athens, Greece.
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Ng C, Kong E, Konishi T, Kobayashi A, Suya N, Cheng S, Yu K. Low-dose neutron dose response of zebrafish embryos obtained from the Neutron exposure Accelerator System for Biological Effect Experiments (NASBEE) facility. Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2015.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Evidence for bystander signalling between human trophoblast cells and human embryonic stem cells. Sci Rep 2015; 5:11694. [PMID: 26170169 PMCID: PMC4501009 DOI: 10.1038/srep11694] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 05/22/2015] [Indexed: 01/08/2023] Open
Abstract
Maternal exposure during pregnancy to toxins can occasionally lead to miscarriage and malformation. It is currently thought that toxins pass through the placental barrier, albeit bi-layered in the first trimester, and damage the fetus directly, albeit at low concentration. Here we examined the responses of human embryonic stem (hES) cells in tissue culture to two metals at low concentration. We compared direct exposures with indirect exposures across a bi-layered model of the placenta cell barrier. Direct exposure caused increased DNA damage without apoptosis or a loss of cell number but with some evidence of altered differentiation. Indirect exposure caused increased DNA damage and apoptosis but without loss of pluripotency. This was not caused by metal ions passing through the barrier. Instead the hES cells responded to signalling molecules (including TNF-α) secreted by the barrier cells. This mechanism was dependent on connexin 43 mediated intercellular ‘bystander signalling’ both within and between the trophoblast barrier and the hES colonies. These results highlight key differences between direct and indirect exposure of hES cells across a trophoblast barrier to metal toxins. It offers a theoretical possibility that an indirectly mediated toxicity of hES cells might have biological relevance to fetal development.
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Lam RKK, Fung YK, Han W, Yu KN. Rescue effects: irradiated cells helped by unirradiated bystander cells. Int J Mol Sci 2015; 16:2591-609. [PMID: 25625514 PMCID: PMC4346853 DOI: 10.3390/ijms16022591] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 12/16/2014] [Accepted: 01/13/2015] [Indexed: 12/28/2022] Open
Abstract
The rescue effect describes the phenomenon where irradiated cells or organisms derive benefits from the feedback signals sent from the bystander unirradiated cells or organisms. An example of the benefit is the mitigation of radiation-induced DNA damages in the irradiated cells. The rescue effect can compromise the efficacy of radioimmunotherapy (RIT) (and actually all radiotherapy). In this paper, the discovery and subsequent confirmation studies on the rescue effect were reviewed. The mechanisms and the chemical messengers responsible for the rescue effect studied to date were summarized. The rescue effect between irradiated and bystander unirradiated zebrafish embryos in vivo sharing the same medium was also described. In the discussion section, the mechanism proposed for the rescue effect involving activation of the nuclear factor κB (NF-κB) pathway was scrutinized. This mechanism could explain the promotion of cellular survival and correct repair of DNA damage, dependence on cyclic adenosine monophosphate (cAMP) and modulation of intracellular reactive oxygen species (ROS) level in irradiated cells. Exploitation of the NF-κB pathway to improve the effectiveness of RIT was proposed. Finally, the possibility of using zebrafish embryos as the model to study the efficacy of RIT in treating solid tumors was also discussed.
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Affiliation(s)
- R K K Lam
- Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong.
| | - Y K Fung
- Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong.
| | - W Han
- Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
| | - K N Yu
- Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong.
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