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Forenzo C, Larsen J. Bridging clinical radiotherapy and space radiation therapeutics through reactive oxygen species (ROS)-triggered delivery. Free Radic Biol Med 2024; 219:88-103. [PMID: 38631648 DOI: 10.1016/j.freeradbiomed.2024.04.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/15/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
This review explores the convergence of clinical radiotherapy and space radiation therapeutics, focusing on ionizing radiation (IR)-generated reactive oxygen species (ROS). IR, with high-energy particles, induces precise cellular damage, particularly in cancer treatments. The paper discusses parallels between clinical and space IR, highlighting unique characteristics of high-charge and energy particles in space and potential health risks for astronauts. Emphasizing the parallel occurrence of ROS generation in both clinical and space contexts, the review identifies ROS as a crucial factor with dual roles in cellular responses and potential disease initiation. The analysis covers ROS generation mechanisms, variations, and similarities in terrestrial and extraterrestrial environments leading to innovative ROS-responsive delivery systems adaptable for both clinical and space applications. The paper concludes by discussing applications of personalized ROS-triggered therapeutic approaches and discussing the challenges and prospects of implementing these strategies in clinical radiotherapy and extraterrestrial missions. Overall, it underscores the potential of ROS-targeted delivery for advancing therapeutic strategies in terrestrial clinical settings and space exploration, contributing to human health improvement on Earth and beyond.
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Affiliation(s)
- Chloe Forenzo
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, 29631, USA
| | - Jessica Larsen
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, 29631, USA; Department of Bioengineering, Clemson University, Clemson, SC, 29631, USA.
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Carrothers E, Appleby M, Lai V, Kozbenko T, Alomar D, Smith BJ, Hamada N, Hinton P, Ainsbury EA, Hocking R, Yauk C, Wilkins RC, Chauhan V. AOP report: Development of an adverse outcome pathway for deposition of energy leading to cataracts. Environ Mol Mutagen 2024. [PMID: 38644659 DOI: 10.1002/em.22594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/23/2024]
Abstract
Cataracts are one of the leading causes of blindness, with an estimated 95 million people affected worldwide. A hallmark of cataract development is lens opacification, typically associated not only with aging but also radiation exposure as encountered by interventional radiologists and astronauts during the long-term space mission. To better understand radiation-induced cataracts, the adverse outcome pathway (AOP) framework was used to structure and evaluate knowledge across biological levels of organization (e.g., macromolecular, cell, tissue, organ, organism and population). AOPs identify a sequence of key events (KEs) causally connected by key event relationships (KERs) beginning with a molecular initiating event to an adverse outcome (AO) of relevance to regulatory decision-making. To construct the cataract AO and retrieve evidence to support it, a scoping review methodology was used to filter, screen, and review studies based on the modified Bradford Hill criteria. Eight KEs were identified that were moderately supported by empirical evidence (e.g., dose-, time-, incidence-concordance) across the adjacent (directly linked) relationships using well-established endpoints. Over half of the evidence to justify the KER linkages was derived from the evidence stream of biological plausibility. Early KEs of oxidative stress and protein modifications had strong linkages to downstream KEs and could be the focus of countermeasure development. Several identified knowledge gaps and inconsistencies related to the quantitative understanding of KERs which could be the basis of future research, most notably directed to experiments in the range of low or moderate doses and dose-rates, relevant to radiation workers and other occupational exposures.
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Affiliation(s)
- Emma Carrothers
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Meghan Appleby
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Vita Lai
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Tatiana Kozbenko
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Dalya Alomar
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Benjamin J Smith
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Nobuyuki Hamada
- Biology and Environmental Chemistry Division, Sustainable System Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Chiba, Japan
| | - Patricia Hinton
- Defense Research & Development Canada, Canadian Forces Environmental Medicine Establishment, Toronto, Ontario, Canada
| | - Elizabeth A Ainsbury
- Radiation, Chemical and Environmental Hazards Division, UK Health Security Agency, Birmingham, UK
- Environmental Research Group within the School of Public Health, Faculty of Medicine at Imperial College of Science, Technology and Medicine, London, UK
| | - Robyn Hocking
- Learning and Knowledge and Library Services, Health Canada, Ottawa, Ontario, Canada
| | - Carole Yauk
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Ruth C Wilkins
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Vinita Chauhan
- Consumer and Clinical Radiation Protection Bureau, Environmental and Radiation Health Sciences Directorate, Health Canada, Ottawa, Ontario, Canada
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Akuwudike P, López-Riego M, Marczyk M, Kocibalova Z, Brückner F, Polańska J, Wojcik A, Lundholm L. Short- and long-term effects of radiation exposure at low dose and low dose rate in normal human VH10 fibroblasts. Front Public Health 2023; 11:1297942. [PMID: 38162630 PMCID: PMC10755029 DOI: 10.3389/fpubh.2023.1297942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction Experimental studies complement epidemiological data on the biological effects of low doses and dose rates of ionizing radiation and help in determining the dose and dose rate effectiveness factor. Methods Human VH10 skin fibroblasts exposed to 25, 50, and 100 mGy of 137Cs gamma radiation at 1.6, 8, 12 mGy/h, and at a high dose rate of 23.4 Gy/h, were analyzed for radiation-induced short- and long-term effects. Two sample cohorts, i.e., discovery (n = 30) and validation (n = 12), were subjected to RNA sequencing. The pool of the results from those six experiments with shared conditions (1.6 mGy/h; 24 h), together with an earlier time point (0 h), constituted a third cohort (n = 12). Results The 100 mGy-exposed cells at all abovementioned dose rates, harvested at 0/24 h and 21 days after exposure, showed no strong gene expression changes. DMXL2, involved in the regulation of the NOTCH signaling pathway, presented a consistent upregulation among both the discovery and validation cohorts, and was validated by qPCR. Gene set enrichment analysis revealed that the NOTCH pathway was upregulated in the pooled cohort (p = 0.76, normalized enrichment score (NES) = 0.86). Apart from upregulated apical junction and downregulated DNA repair, few pathways were consistently changed across exposed cohorts. Concurringly, cell viability assays, performed 1, 3, and 6 days post irradiation, and colony forming assay, seeded just after exposure, did not reveal any statistically significant early effects on cell growth or survival patterns. Tendencies of increased viability (day 6) and reduced colony size (day 21) were observed at 12 mGy/h and 23.4 Gy/min. Furthermore, no long-term changes were observed in cell growth curves generated up to 70 days after exposure. Discussion In conclusion, low doses of gamma radiation given at low dose rates had no strong cytotoxic effects on radioresistant VH10 cells.
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Affiliation(s)
- Pamela Akuwudike
- Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Milagrosa López-Riego
- Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Michal Marczyk
- Department of Data Science and Engineering, Silesian University of Technology, Gliwice, Poland
- Yale Cancer Center, Yale School of Medicine, New Haven, CT, United States
| | - Zuzana Kocibalova
- Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Fabian Brückner
- Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - Joanna Polańska
- Department of Data Science and Engineering, Silesian University of Technology, Gliwice, Poland
| | - Andrzej Wojcik
- Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
- Institute of Biology, Jan Kochanowski University, Kielce, Poland
| | - Lovisa Lundholm
- Centre for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
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Khazaei Monfared Y, Heidari P, Klempner SJ, Mahmood U, Parikh AR, Hong TS, Strickland MR, Esfahani SA. DNA Damage by Radiopharmaceuticals and Mechanisms of Cellular Repair. Pharmaceutics 2023; 15:2761. [PMID: 38140100 PMCID: PMC10748326 DOI: 10.3390/pharmaceutics15122761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
DNA is an organic molecule that is highly vulnerable to chemical alterations and breaks caused by both internal and external factors. Cells possess complex and advanced mechanisms, including DNA repair, damage tolerance, cell cycle checkpoints, and cell death pathways, which together minimize the potentially harmful effects of DNA damage. However, in cancer cells, the normal DNA damage tolerance and response processes are disrupted or deregulated. This results in increased mutagenesis and genomic instability within the cancer cells, a known driver of cancer progression and therapeutic resistance. On the other hand, the inherent instability of the genome in rapidly dividing cancer cells can be exploited as a tool to kill by imposing DNA damage with radiopharmaceuticals. As the field of targeted radiopharmaceutical therapy (RPT) is rapidly growing in oncology, it is crucial to have a deep understanding of the impact of systemic radiation delivery by radiopharmaceuticals on the DNA of tumors and healthy tissues. The distribution and activation of DNA damage and repair pathways caused by RPT can be different based on the characteristics of the radioisotope and molecular target. Here we provide a comprehensive discussion of the biological effects of RPTs, with the main focus on the role of varying radioisotopes in inducing direct and indirect DNA damage and activating DNA repair pathways.
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Affiliation(s)
- Yousef Khazaei Monfared
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (Y.K.M.); (P.H.); (U.M.)
| | - Pedram Heidari
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (Y.K.M.); (P.H.); (U.M.)
| | - Samuel J. Klempner
- Division of Hematology-Oncology, Department of Medicine, Mass General Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (S.J.K.); (A.R.P.); (M.R.S.)
| | - Umar Mahmood
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (Y.K.M.); (P.H.); (U.M.)
| | - Aparna R. Parikh
- Division of Hematology-Oncology, Department of Medicine, Mass General Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (S.J.K.); (A.R.P.); (M.R.S.)
| | - Theodore S. Hong
- Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA;
| | - Matthew R. Strickland
- Division of Hematology-Oncology, Department of Medicine, Mass General Cancer Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (S.J.K.); (A.R.P.); (M.R.S.)
| | - Shadi A. Esfahani
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA; (Y.K.M.); (P.H.); (U.M.)
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Dahl H, Ballangby J, Tengs T, Wojewodzic MW, Eide DM, Brede DA, Graupner A, Duale N, Olsen AK. Dose rate dependent reduction in chromatin accessibility at transcriptional start sites long time after exposure to gamma radiation. Epigenetics 2023; 18:2193936. [PMID: 36972203 PMCID: PMC10054331 DOI: 10.1080/15592294.2023.2193936] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Ionizing radiation (IR) impact cellular and molecular processes that require chromatin remodelling relevant for cellular integrity. However, the cellular implications of ionizing radiation (IR) delivered per time unit (dose rate) are still debated. This study investigates whether the dose rate is relevant for inflicting changes to the epigenome, represented by chromatin accessibility, or whether it is the total dose that is decisive. CBA/CaOlaHsd mice were whole-body exposed to either chronic low dose rate (2.5 mGy/h for 54 d) or the higher dose rates (10 mGy/h for 14 d and 100 mGy/h for 30 h) of gamma radiation (60Co, total dose: 3 Gy). Chromatin accessibility was analysed in liver tissue samples using Assay for Transposase-Accessible Chromatin with high-throughput sequencing (ATAC-Seq), both one day after and over three months post-radiation (>100 d). The results show that the dose rate contributes to radiation-induced epigenomic changes in the liver at both sampling timepoints. Interestingly, chronic low dose rate exposure to a high total dose (3 Gy) did not inflict long-term changes to the epigenome. In contrast to the acute high dose rate given to the same total dose, reduced accessibility at transcriptional start sites (TSS) was identified in genes relevant for the DNA damage response and transcriptional activity. Our findings link dose rate to essential biological mechanisms that could be relevant for understanding long-term changes after ionizing radiation exposure. However, future studies are needed to comprehend the biological consequence of these findings.
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Affiliation(s)
- Hildegunn Dahl
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Jarle Ballangby
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Torstein Tengs
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
- Division for Aquaculture, Department of breeding and genetics, Nofima, Ås, Norway
| | - Marcin W Wojewodzic
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
- Department of Research, Section Molecular Epidemiology and Infections, Cancer Registry of Norway, Oslo, Norway
| | - Dag M Eide
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Dag Anders Brede
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
- Faculty of Environmental Sciences and Natural Resource Management (MINA), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Anne Graupner
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Nur Duale
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Ann-Karin Olsen
- Division of Climate and Environmental Health, Department of Chemical Toxicology, Norwegian Institute of Public Health, Oslo, Norway
- Centre for Environmental Radiation (CERAD), Norwegian University of Life Sciences (NMBU), Ås, Norway
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Patni K, Pande AP, Jindal MK, Joshi T. Gamma radiation dose rate in high-altitude areas in the Bageshwar, Champawat and Pithoragarh districts of Uttarakhand, India. Environ Geochem Health 2023; 45:8119-8133. [PMID: 37540337 DOI: 10.1007/s10653-023-01714-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/22/2023] [Indexed: 08/05/2023]
Abstract
Radiation has a deteriorating effect on humans as well as on the environment depending on its level, although we have all been exposed to natural gamma radiation from birth. The presence of radionuclides in rocks, soil, plants, and water is a major factor behind the natural gamma radiation. The present study deals with the study of natural gamma radiation at Bageshwar, Champawat and Pithoragarh districts of Uttarakhand. It also consists of seasonal variations in gamma radiation and its relationship with altitude and geology. The purpose of this study was to investigate the influence of altitude and geology on natural gamma radiation dose rate data in high-altitude areas of India. The highest gamma radiation value was 444 nSv/h in the summer and 342 nSv/h in the winter. The investigation recorded the gamma radiation up to 2542.20 m altitude, indicating that the geology of the areas is more relevant than the altitude. Few sites in such a high-altitude zone were found to exceed the value of 200 nSv/h, as reported by UNSCEAR. This research is necessary in order to consider the human health and climate changes, both of which are part of the action plan for the United Nation's Sustainable Development Goals (SDG 3, SDG 13).
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Affiliation(s)
- Kiran Patni
- School of Allied Sciences, Graphic Era Hill University, Bhimtal Campus, Bhimtal, Uttarakhand, India
| | - Ashutosh Pratap Pande
- Department of Chemistry, Laxman Singh Mahar Government Post Graduate College, Pithoragarh, Uttarakhand, India
| | - Manoj Kumar Jindal
- Divecha Centre for Climate Change, Indian Institute of Science, Bangalore, India.
| | - Tanuj Joshi
- Department of Pharmaceutical Sciences, Bhimtal, Kumaun University, Nainital, Uttarakhand, India
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Potart D, Gluais M, Gaubert A, Da Silva N, Hourques M, Sarrazin M, Izotte J, Mora Charrot L, L'Heureux N. The cell-assembled extracellular matrix: A focus on the storage stability and terminal sterilization of this human "bio" material. Acta Biomater 2023; 166:133-146. [PMID: 37149079 PMCID: PMC7614989 DOI: 10.1016/j.actbio.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 04/18/2023] [Accepted: 05/02/2023] [Indexed: 05/08/2023]
Abstract
The Cell-Assembled extracellular Matrix (CAM) is an attractive biomaterial because it provided the backbone of vascular grafts that were successfully implanted in patients, and because it can now be assembled in "human textiles". For future clinical development, it is important to consider key manufacturing questions. In this study, the impact of various storage conditions and sterilization methods were evaluated. After 1 year of dry frozen storage, no change in mechanical nor physicochemical properties were detected. However, storage at 4 °C and room temperature resulted in some mechanical changes, especially for dry CAM, but physicochemical changes were minor. Sterilization modified CAM mechanical and physicochemical properties marginally except for hydrated gamma treatment. All sterilized CAM supported cell proliferation. CAM ribbons were implanted subcutaneously in immunodeficient rats to assess the impact of sterilization on the innate immune response. Sterilization accelerated strength loss but no significant difference could be shown at 10 months. Very mild and transient inflammatory responses were observed. Supercritical CO2 sterilization had the least effect. In conclusion, the CAM is a promising biomaterial since it is unaffected by long-term storage in conditions available in hospitals (hydrated at 4 °C), and can be sterilized terminally (scCO2) without compromising in vitro nor in vivo performance. STATEMENT OF SIGNIFICANCE: In the field of tissue engineering, the use of extracellular matrix (ECM) proteins as a scaffolding biomaterial has become very popular. Recently, many investigators have focused on ECM produced by cells in vitro to produce unprocessed biological scaffolds. As this new kind of "biomaterial" becomes more and more relevant, it is critical to consider key manufacturing questions to facilitate future transition to the clinic. This article presents an extensive evaluation of long-term storage stability and terminal sterilization effects on an extracellular matrix assembled by cells in vitro. We believe that this article will be of great interest to help tissue engineers involved in so-called scaffold-free approaches to better prepare the translation from benchtop to bedside.
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Affiliation(s)
- Diane Potart
- BIOTIS - Laboratory for the Bioengineering of Tissues (UMR Inserm 1026), University of Bordeaux, Inserm, BIOTIS, UMR1026, Campus Carreire, 146 Rue Léo-Saignat, case 45, Bordeaux F-33076, France
| | - Maude Gluais
- BIOTIS - Laboratory for the Bioengineering of Tissues (UMR Inserm 1026), University of Bordeaux, Inserm, BIOTIS, UMR1026, Campus Carreire, 146 Rue Léo-Saignat, case 45, Bordeaux F-33076, France
| | - Alexandra Gaubert
- University of Bordeaux, CNRS, UMR 5320, Inserm, UMR121, ANRA, Bordeaux F-33076, France
| | - Nicolas Da Silva
- BIOTIS - Laboratory for the Bioengineering of Tissues (UMR Inserm 1026), University of Bordeaux, Inserm, BIOTIS, UMR1026, Campus Carreire, 146 Rue Léo-Saignat, case 45, Bordeaux F-33076, France
| | - Marie Hourques
- BIOTIS - Laboratory for the Bioengineering of Tissues (UMR Inserm 1026), University of Bordeaux, Inserm, BIOTIS, UMR1026, Campus Carreire, 146 Rue Léo-Saignat, case 45, Bordeaux F-33076, France
| | - Marie Sarrazin
- BIOTIS - Laboratory for the Bioengineering of Tissues (UMR Inserm 1026), University of Bordeaux, Inserm, BIOTIS, UMR1026, Campus Carreire, 146 Rue Léo-Saignat, case 45, Bordeaux F-33076, France
| | - Julien Izotte
- Animal Facility A2, University of Bordeaux, Bordeaux F-33076, France
| | - Léa Mora Charrot
- Animal Facility A2, University of Bordeaux, Bordeaux F-33076, France
| | - Nicolas L'Heureux
- BIOTIS - Laboratory for the Bioengineering of Tissues (UMR Inserm 1026), University of Bordeaux, Inserm, BIOTIS, UMR1026, Campus Carreire, 146 Rue Léo-Saignat, case 45, Bordeaux F-33076, France.
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Basse C, Ancel J, Massiani MA, Bonté PE, Beaulaton C, Beaucaire-Danel S, Milder M, Cao K, Daniel C, Du Rusquec P, Sablin MP, Kirova Y, Sage E, Beddok A, Girard N. Accelerated subsequent lung cancer after post-operative radiotherapy for breast cancer. Lung Cancer 2023; 182:107295. [PMID: 37442059 DOI: 10.1016/j.lungcan.2023.107295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 06/20/2023] [Accepted: 07/08/2023] [Indexed: 07/15/2023]
Abstract
BACKGROUND Post-operative whole breast radiotherapy for breast cancer (BC) may increase the risk of subsequent lung cancer (LC). The impact of radiotherapy intensification (boost) has not been specifically explored in this context. We investigated the role of radiation modalities on the development of subsequent LC among our patients treated by radiotherapy for localized BC. METHODS All patients with a diagnosis of LC between 2000 and 2020 with a history of prior localized BC treated by surgery and post-operative radiotherapy were retrospectively reviewed. Primary endpoint was time to first diagnosis of LC after BC treatment with radiotherapy (RT). RESULTS From 98 patients who developed subsequent LC after primary BC treated with post-operative RT, 38% of patients (n = 37) received an additional RT boost, and 46% (n = 45) received hormonal treatment post radiation. A total of 61% (n = 60) were smokers. With regards to LC characteristics, adenocarcinoma was the most frequent histology (68%, n = 66); 36% (n = 35) harbored at least 1 molecular alteration, 57% (n = 20) of them being amenable to targeted therapy. Median time to first diagnosis of LC was 6 years [1.7-28.4 yrs] in the whole cohort. In the subgroup of patients treated with boost this time was reduced to 4 years [1.8-20.8 years] compared to 8 years for patients without boost [1.7-28.4 yrs] (p = 0.007). Boost, smoking usage, endocrine therapy, and age <50 yrs old at BC radiation remained independent factors associated with shorter time to first diagnosis of LC after BC treatment. DISCUSSION We report for the first time the potential impact of boost -part of BC radiation treatment- for BC on the risk of subsequent LC. The impact of low dose radiation on lung parenchyma could explain this phenomenon, but the underlying physiopathology is still under investigation. This work highlights the need for clinicians to identify patients at risk of developing faster subsequent thoracic malignancy after BC radiation, for implementing personalized surveillance.
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Affiliation(s)
- Clémence Basse
- Thoracic Oncology, Institut Curie, Paris-St Cloud, France; University of Versailles Saint Quentin, Faculté de médecine Simone-Veil, Paris Saclay University, Versailles, France
| | | | | | | | | | | | - Maud Milder
- Data Department, Institut Curie, Paris, France
| | - Kim Cao
- Radiation Department, Institut Curie, Paris, France
| | | | | | | | | | - Edouard Sage
- University of Versailles Saint Quentin, Faculté de médecine Simone-Veil, Paris Saclay University, Versailles, France; Thoracic Surgery Department, Hôpital Foch, Suresnes, France
| | | | - Nicolas Girard
- Thoracic Oncology, Institut Curie, Paris-St Cloud, France; University of Versailles Saint Quentin, Faculté de médecine Simone-Veil, Paris Saclay University, Versailles, France.
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Dilek ON, Atay A, Gunes O, Karahan F, Karasu Ş. Role of contrast-enhanced serial/spot abdominal X-rays in perioperative follow-up of patients undergoing abdominal surgery: An observational clinical study. World J Radiol 2023; 15:191-200. [PMID: 37424738 PMCID: PMC10324494 DOI: 10.4329/wjr.v15.i6.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/17/2023] [Accepted: 06/16/2023] [Indexed: 06/28/2023] Open
Abstract
BACKGROUND Many imaging methods such as ultrasonography, computed tomography (CT), magnetic resonance imaging, and endoscopy are used to identify the problems or complications that occur in the perioperative period and to determine the appropriate therapeutic approach. Specialists at surgical clinics and intensive care units sometimes need diagnostic procedures that can give quick results or reveal unexpected results. In particular, rapid on-site evaluation of patients followed under intensive care conditions has several advantages.
AIM To determine the problems developing in patients in the perioperative period by contrast-enhanced abdominal X-ray (CE-AXR), revealing their current status or defining the effectiveness of CE-AXR.
METHODS The files of the patients who underwent hepatopancreatobiliary or upper gastrointestinal surgery, whose CE-AXR film was taken, were reviewed retrospectively. Abdominal X-ray radiographs taken after ingestion of a water-soluble contrast agent (iohexol, 300 mg, 50 cc vial) and its application in a drain, nasogastric tube, or stent were evaluated. The contribution of the data obtained in patients who underwent CE-AXR to the diagnosis, follow-up, and treatment processes and the effectiveness of the application were investigated.
RESULTS CE-AXR was applied to 131 patients in our clinic, most of whom underwent hepatopancreatobiliary or upper gastrointestinal surgery. It was determined that the data obtained from CE-AXR films taken in 98 (74.8%) of the patients contributed to the diagnosis, treatment, and follow-up expectations and positively affected the clinical processes.
CONCLUSION CE-AXR is a simple procedure that can be applied anywhere, especially in intensive care patients and at bedside, with a portable X-ray device. The simplicity of the procedure, less radiation exposure for the patients, less time wastage, reduction in the CT and endoscopy procedure burden and costs, quick results, rapid assessment of the situation, and enabling the monitoring of processes with repetitive procedures are important advantages. X-rays taken will be useful in terms of being a reference value during the follow-up period of the patient and determining the situation in medicolegal processes.
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Affiliation(s)
- Osman Nuri Dilek
- Department of Surgery, İzmir Katip Celebi University, School of Medicine, İzmir 35150, Turkey
| | - Arif Atay
- Department of Surgery, İzmir Katip Celebi University, School of Medicine, İzmir 35150, Turkey
| | - Orgun Gunes
- Department of Surgery, İzmir Atatürk Education and Research Hospital, İzmir 35150, Turkey
| | - Furkan Karahan
- Department of Surgery, İzmir Katip Celebi University, School of Medicine, İzmir 35150, Turkey
| | - Şebnem Karasu
- Department of Radiology, İzmir Katip Celebi University, School of Medicine, İzmir 35150, Turkey
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10
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Aboelezz E, Pogue BW. Review of nanomaterial advances for ionizing radiation dosimetry. Appl Phys Rev 2023; 10:021312. [PMID: 37304732 PMCID: PMC10249220 DOI: 10.1063/5.0134982] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 05/01/2023] [Indexed: 06/13/2023]
Abstract
There are a wide range of applications with ionizing radiation and a common theme throughout these is that accurate dosimetry is usually required, although many newer demands are provided by improved features in higher range, multi-spectral and particle type detected. Today, the array of dosimeters includes both offline and online tools, such as gel dosimeters, thermoluminescence (TL), scintillators, optically stimulated luminescence (OSL), radiochromic polymeric films, gels, ionization chambers, colorimetry, and electron spin resonance (ESR) measurement systems. Several future nanocomposite features and interpretation of their substantial behaviors are discussed that can lead to improvements in specific features, such as (1) lower sensitivity range, (2) less saturation at high range, (3) overall increased dynamic range, (4) superior linearity, (5) linear energy transfer and energy independence, (6) lower cost, (7) higher ease of use, and (8) improved tissue equivalence. Nanophase versions of TL and ESR dosimeters and scintillators each have potential for higher range of linearity, sometimes due to superior charge transfer to the trapping center. Both OSL and ESR detection of nanomaterials can have increased dose sensitivity because of their higher readout sensitivity with nanoscale sensing. New nanocrystalline scintillators, such as perovskite, have fundamentally important advantages in sensitivity and purposeful design for key new applications. Nanoparticle plasmon coupled sensors doped within a lower Zeff material have been an effective way to achieve enhanced sensitivity of many dosimetry systems while still achieving tissue equivalency. These nanomaterial processing techniques and unique combinations of them are key steps that lead to the advanced features. Each must be realized through industrial production and quality control with packaging into dosimetry systems that maximize stability and reproducibility. Ultimately, recommendations for future work in this field of radiation dosimetry were summarized throughout the review.
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Affiliation(s)
- Eslam Aboelezz
- Ionizing Radiation Metrology Department, National Institute of Standards, Giza, Egypt
| | - Brian W. Pogue
- Department of Medical Physics, University of Wisconsin-Madison, Madison 53705, USA
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11
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Pradhoshini KP, Priyadharshini M, Santhanabharathi B, Ahmed MS, Parveen MHS, War MUD, Musthafa MS, Alam L, Falco F, Faggio C. Biological effects of ionizing radiation on aquatic biota - A critical review. Environ Toxicol Pharmacol 2023; 99:104091. [PMID: 36870406 DOI: 10.1016/j.etap.2023.104091] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/16/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
Ionizing radiation from radionuclides impacts marine aquatic biota and the scope of investigation must be wider than just invertebrates. We intend to detail and illustrate numerous biological effects that occur in both aquatic vertebrates and invertebrates, at various dose rates from all three kinds of ionizing radiation. The characteristics of radiation sources and dosages that would most effectively generate the intended effects in the irradiated organism were assessed once the biological differentiation between vertebrates and invertebrates was determined through multiple lines of evidence. We contend that invertebrates are still more radiosensitive than vertebrates, due to their small genome size, rapid reproduction rates and lifestyle, which help them to compensate for the effects of radiation induced declines in fecundity, life span and individual health. We also identified various research gaps in this field and suggest future directions to be investigated to remedy the lack of data available in this area.
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Affiliation(s)
- Kumara Perumal Pradhoshini
- Unit of Research in Radiation Biology & Environmental Radioactivity (URRBER), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai 600 014, Tamilnadu, India; Institute for Environment and Development (LESTARI), Research Centre for Sustainability Science and Governance (SGK), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Marckasagayam Priyadharshini
- Unit of Research in Radiation Biology & Environmental Radioactivity (URRBER), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai 600 014, Tamilnadu, India
| | - Bharathi Santhanabharathi
- Unit of Research in Radiation Biology & Environmental Radioactivity (URRBER), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai 600 014, Tamilnadu, India
| | - Munawar Suhail Ahmed
- Unit of Research in Radiation Biology & Environmental Radioactivity (URRBER), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai 600 014, Tamilnadu, India
| | - Mohamat Hanifa Shafeeka Parveen
- Unit of Aquatic biology and Aquaculture (UABA), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai 600 014, Tamilnadu, India
| | - Mehraj Ud Din War
- Unit of Aquatic biology and Aquaculture (UABA), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai 600 014, Tamilnadu, India
| | - Mohamed Saiyad Musthafa
- Unit of Research in Radiation Biology & Environmental Radioactivity (URRBER), P.G. & Research Department of Zoology, The New College (Autonomous), Affiliated to University of Madras, Chennai 600 014, Tamilnadu, India; Institute for Environment and Development (LESTARI), Research Centre for Sustainability Science and Governance (SGK), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
| | - Lubna Alam
- Institute for Environment and Development (LESTARI), Research Centre for Sustainability Science and Governance (SGK), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Franscesca Falco
- National Research Council, Institute for Biological Resources and Marine Biotechnology (IRBIM), Mazara del Vallo, Italy
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy.
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12
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Suzuki K, Imaoka T, Tomita M, Sasatani M, Doi K, Tanaka S, Kai M, Yamada Y, Kakinuma S. Molecular and cellular basis of the dose-rate-dependent adverse effects of radiation exposure in animal models. Part I: Mammary gland and digestive tract. J Radiat Res 2023; 64:210-227. [PMID: 36773323 PMCID: PMC10036108 DOI: 10.1093/jrr/rrad002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 10/04/2022] [Indexed: 06/18/2023]
Abstract
While epidemiological data are available for the dose and dose-rate effectiveness factor (DDREF) for human populations, animal models have contributed significantly to providing quantitative data with mechanistic insights. The aim of the current review is to compile both the in vitro experiments with reference to the dose-rate effects of DNA damage and repair, and the animal studies, specific to rodents, with reference to the dose-rate effects of cancer development. In particular, the review focuses especially on the results pertaining to underlying biological mechanisms and discusses their possible involvement in the process of radiation-induced carcinogenesis. Because the concept of adverse outcome pathway (AOP) together with the key events has been considered as a clue to estimate radiation risks at low doses and low dose-rates, the review scrutinized the dose-rate dependency of the key events related to carcinogenesis, which enables us to unify the underlying critical mechanisms to establish a connection between animal experimental studies with human epidemiological studies.
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Affiliation(s)
- Keiji Suzuki
- Corresponding author. Department of Radiation Medical Sciences, Nagasaki University Atomic Bomb Disease Institute. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan. Tel: +81-95-819-7116; Fax: +81-95-819-7117;
| | | | | | | | - Kazutaka Doi
- Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Satoshi Tanaka
- Department of Radiobiology, Institute for Environmental Sciences, 1-7 Ienomae, Obuchi, Rokkasho-mura, Kamikita-gun, Aomori 039-3212, Japan
| | - Michiaki Kai
- Nippon Bunri University, 1727-162 Ichiki, Oita, Oita 870-0397, Japan
| | - Yutaka Yamada
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Shizuko Kakinuma
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
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13
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Suzuki K, Imaoka T, Tomita M, Sasatani M, Doi K, Tanaka S, Kai M, Yamada Y, Kakinuma S. Molecular and cellular basis of the dose-rate-dependent adverse effects of radiation exposure in animal models. Part II: Hematopoietic system, lung and liver. J Radiat Res 2023; 64:228-249. [PMID: 36773331 PMCID: PMC10036110 DOI: 10.1093/jrr/rrad003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 10/04/2022] [Indexed: 06/18/2023]
Abstract
While epidemiological data have greatly contributed to the estimation of the dose and dose-rate effectiveness factor (DDREF) for human populations, studies using animal models have made significant contributions to provide quantitative data with mechanistic insights. The current article aims at compiling the animal studies, specific to rodents, with reference to the dose-rate effects of cancer development. This review focuses specifically on the results that explain the biological mechanisms underlying dose-rate effects and their potential involvement in radiation-induced carcinogenic processes. Since the adverse outcome pathway (AOP) concept together with the key events holds promise for improving the estimation of radiation risk at low doses and low dose-rates, the review intends to scrutinize dose-rate dependency of the key events in animal models and to consider novel key events involved in the dose-rate effects, which enables identification of important underlying mechanisms for linking animal experimental and human epidemiological studies in a unified manner.
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Affiliation(s)
- Keiji Suzuki
- Corresponding author, Department of Radiation Medical Sciences, Nagasaki University Atomic Bomb Disease Institute. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan. Tel:+81-95-819-7116; Fax:+81-95-819-7117; E-mail:
| | | | | | | | - Kazutaka Doi
- Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Satoshi Tanaka
- Department of Radiobiology, Institute for Environmental Sciences, 1-7 Ienomae, Obuchi, Rokkasho-mura, Kamikita-gun, Aomori 039-3212, Japan
| | - Michiaki Kai
- Nippon Bunri University, 1727-162 Ichiki, Oita, Oita 870-0397, Japan
| | - Yutaka Yamada
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Shizuko Kakinuma
- Department of Radiation Effects Research, National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
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14
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Hallier DC, Smales GJ, Seitz H, Hahn MB. Bio-SAXS of single-stranded DNA-binding proteins: radiation protection by the compatible solute ectoine. Phys Chem Chem Phys 2023; 25:5372-5382. [PMID: 36637121 DOI: 10.1039/d2cp05053f] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Small-angle X-ray scattering (SAXS) can be used for structural determination of biological macromolecules and polymers in their native states (e.g. liquid phase). This means that the structural changes of (bio-)polymers, such as proteins and DNA, can be monitored in situ to understand their sensitivity to changes in chemical environments. In an attempt to improve the reliability of such experiments, the reduction of radiation damage occurring from exposure to X-rays is required. One such method, is to use scavenger molecules to protect macromolecules against radicals produced during radiation exposure, such as reactive oxygen species (ROS). In this study we investigate the feasibility of applying the compatible solute, osmolyte and radiation protector Ectoine (THP(B)), as a scavenger molecule during SAXS measurements of the single-stranded DNA-binding protein Gene-V Protein (G5P/GVP). In this case, we monitor the radiation induced changes of G5P during bio-SAXS measurments and the resulting microscopic energy-damage relation was determined from microdosimetric calculations by Monte-Carlo based particle scattering simulations with TOPAS/Geant4 and a custom target-model. This resulted in a median-lethal energy deposit of pure G5P at 4 mg mL-1 of E1/2 = 7 ± 5 eV, whereas a threefold increase of energy-deposit was needed under the presence of Ectoine to reach the same level of damage. This indicates that Ectoine increases the possible exposure time before radiation-damage to G5P is observed. Furthermore, the dominant type of damage shifted from aggregation in pure solutions towards a fragmentation for solutions containing Ectoine as a cosolute. These results are interpreted in terms of indirect radiation damage by reactive secondary species, as well as post-irradiation effects, related to preferential-exclusion of the cosolute from the protein surface. Hence, Ectoine is shown to provide a non-disturbing way to improve structure-determination of proteins via bio-SAXS in future studies.
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Affiliation(s)
- Dorothea C Hallier
- Universität Potsdam, Institut für Biochemie und Biologie, 14476 Potsdam, Germany.,Fraunhofer Institute for Cell Therapy and Immunology, Branch Bioanalytics and Bioprocesses (IZI-BB), 14476 Potsdam, Germany.,Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany.
| | - Glen J Smales
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany.
| | - Harald Seitz
- Universität Potsdam, Institut für Biochemie und Biologie, 14476 Potsdam, Germany.,Fraunhofer Institute for Cell Therapy and Immunology, Branch Bioanalytics and Bioprocesses (IZI-BB), 14476 Potsdam, Germany
| | - Marc Benjamin Hahn
- Bundesanstalt für Materialforschung und -prüfung (BAM), 12205 Berlin, Germany.
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15
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Manglass LM, Vogel CM, Wintenberg M, Blenner MA, Martinez NE. Flowthrough of 239PU and 55FE during RNA extraction. J Radiol Prot 2023; 43:013502. [PMID: 36623311 DOI: 10.1088/1361-6498/acb15d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Analysis of gene expression has become an important tool in understanding low-dose effect mechanisms of ionizing radiation at the cellular level. Metal binding to nucleic acids needs to be considered when interpreting these results, as some radioactive metals, particularly actinides, may produce free radicals and cause oxidative stress damage via chemical means at rates much higher than free radical formation related to their radiological properties. Bacteria exposedin situto low dose rates of plutonium-239 (239Pu) and iron-55 (55Fe) were previously analysed for gene expression. The work herein was motivated by an interest in more precisely identifying the distribution of radionuclides in these bacteria as well as the practical need to ensure appropriate transport and handling of the associated ribonucleic acid (RNA) extractions. RNA extractions were performed on bacteria growth media with and without bacteria cells (i.e. with and without RNA) at several different concentrations of239Pu and55Fe to inform the level of specificity of the extraction membrane as well as provide insight into internal (uptake) vs external (sorption) accumulation of these radionuclides in bacteria cells. Results of the study suggest that239Pu and55Fe detected in RNA extraction samples during long term cell studies is the result of binding to RNA prior to the time of extraction, as opposed to flow through or binding after cell lysis, and it highlights the practical importance of nucleic acid sample characterization to radiation protection more generally.
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Affiliation(s)
- Lisa M Manglass
- Department of Physics and Engineering, Francis Marion University, Florence, SC, United States of America
- Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC, United States of America
| | - Charlotte M Vogel
- Department of Biological Sciences, Clemson University, Clemson, SC, United States of America
| | - Molly Wintenberg
- Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, United States of America
| | - Mark A Blenner
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, United States of America
| | - Nicole E Martinez
- Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC, United States of America
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16
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Kaushik N, Mitra S, Baek EJ, Nguyen LN, Bhartiya P, Kim JH, Choi EH, Kaushik NK. The inactivation and destruction of viruses by reactive oxygen species generated through physical and cold atmospheric plasma techniques: Current status and perspectives. J Adv Res 2023; 43:59-71. [PMID: 36585115 PMCID: PMC8905887 DOI: 10.1016/j.jare.2022.03.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/28/2022] [Accepted: 03/02/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Outbreaks of airborne viral infections, such as COVID-19, can cause panic regarding other severe respiratory syndrome diseases that may develop and affect public health. It is therefore necessary to develop control methods that offer protection against such viruses. AIM OF REVIEW To identify a feasible solution for virus deactivation, we critically reviewed methods of generating reactive oxygen species (ROS), which can attack a wide range of molecular targets to induce antiviral activity, accounting for their flexibility in facilitating host defense mechanisms against a comprehensive range of pathogens. Recently, the role of ROS in microbial decontamination has been critically investigated as a major topic in infectious diseases. ROS can eradicate pathogens directly by inducing oxidative stress or indirectly by promoting pathogen removal through numerous non-oxidative mechanisms, including autophagy, T-cell responses, and pattern recognition receptor signaling. KEY SCIENTIFIC CONCEPTS OF REVIEW In this article, we reviewed possible methods for the in vitro generation of ROS with antiviral activity. Furthermore, we discuss, in detail, the novel and environmentally friendly cold plasma delivery system in the destruction of viruses. This review highlights the potential of ROS as therapeutic mediators to modernize current techniques and improvement on the efficiency of inactivating SARS-CoV2 and other viruses.
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Affiliation(s)
- Neha Kaushik
- Department of Biotechnology, College of Engineering, The University of Suwon, Hwaseong 18323, Korea
| | - Sarmistha Mitra
- Department of Anatomy, Dongguk University College of Medicine, Gyeongju 38066, Korea
| | - Eun Jung Baek
- Department of Laboratory Medicine, College of Medicine, Hanyang University, Seoul 04763, Korea
| | - Linh Nhat Nguyen
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea,Laboratory of Plasma Technology, Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi 100000, Viet Nam
| | - Pradeep Bhartiya
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea
| | - June Hyun Kim
- Department of Biotechnology, College of Engineering, The University of Suwon, Hwaseong 18323, Korea
| | - Eun Ha Choi
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea,Corresponding author
| | - Nagendra Kumar Kaushik
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul 01897, Korea,Corresponding author
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17
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Caravaca J, Peter R, Yang J, Gunther C, Antonio Camara Serrano J, Nostrand C, Steri V, Seo Y. Comparison and calibration of dose delivered by 137Cs and x-ray irradiators in mice. Phys Med Biol 2022; 67:10.1088/1361-6560/ac9e88. [PMID: 36317316 PMCID: PMC9933773 DOI: 10.1088/1361-6560/ac9e88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/28/2022] [Indexed: 11/07/2022]
Abstract
Objective.The Office of Radiological Security, U.S. Department of Energy's National Nuclear Security Administration, is implementing a radiological risk reduction program which seeks to minimize or eliminate the use of high activity radiological sources, including137Cs, by replacing them with non-radioisotopic technologies, such as x-ray irradiators. The main goal of this paper is to evaluate the equivalence of the dose delivered by gamma- and x-ray irradiators in mice using experimental measurements and Monte Carlo simulations. We also propose a novel biophantom as anin situdose calibration method.Approach.We irradiated mouse carcasses and 3D-printed mouse biophantoms in a137Cs irradiator (Mark I-68) and an x-ray irradiator (X-Rad320) at three voltages (160 kVp, 225 kVp and 320 kVp) and measured the delivered radiation dose. A Geant4-based Monte Carlo model was developed and validated to provide a comprehensive picture of gamma- and x-ray irradiation in mice.Main Results.Our Monte Carlo model predicts a uniform dose delivered in soft-tissue for all the explored irradiation programs and in agreement with the absolute dose measurements. Our Monte Carlo model shows an energy-dependent difference between dose in bone and in soft tissue that decreases as photon energy increases. Dose rate depends on irradiator and photon energy. We observed a deviation of the measured dose from the target value of up to -9% for the Mark I-68, and up to 35% for the X-Rad320. The dose measured in the 3D-printed phantoms are equivalent to that in the carcasses within 6% uncertainty.Significance.Our results suggest that 320 kVp irradiation is a good candidate to substitute137Cs irradiation barring a few caveats. There is a significant difference between measured and targeted doses for x-ray irradiation that suggests a strong need forin situcalibration, which can be achieved with 3D-printed mouse biophantoms. A dose correction is necessary for bone doses, which can be provided by a Monte Carlo calculation. Finally, the biological implications of the differences in dose rates and dose per photon for the different irradiation methods should be carefully assessed for each small-animal irradiation experiment.
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Affiliation(s)
- Javier Caravaca
- Physics Research Laboratory, University of California, San Francisco
| | - Robin Peter
- Physics Research Laboratory, University of California, San Francisco;,Department of Nuclear Engineering, University of California, Berkeley
| | - Jaewon Yang
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas
| | | | | | | | - Veronica Steri
- Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco
| | - Youngho Seo
- Physics Research Laboratory, University of California, San Francisco;,Department of Nuclear Engineering, University of California, Berkeley
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18
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Zhao Z, Liu Z, Zhou Y, Wang J, Zhang Y, Yu X, Wu R, Guo C, Qin A, Bawa G, Sun X. Creation of cotton mutant library based on linear electron accelerator radiation mutation. Biochem Biophys Rep 2022; 30:101228. [PMID: 35243011 PMCID: PMC8867050 DOI: 10.1016/j.bbrep.2022.101228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 11/21/2022] Open
Abstract
Cotton (Gossypium spp.) is one of the most important cash crops worldwide. At present, new cotton varieties are mainly produced through conventional cross breeding, which is limited by available germplasm. Although the genome of cotton has been fully sequenced, research on the function of specific genes lags behind due to the lack of sufficient genetic material. Therefore, it is very important to create a cotton mutant library to create new, higher-quality varieties and identify genes associated with the regulation of key traits. Traditional mutagenic strategies, such as physical, chemical, and site-directed mutagenesis, are relatively costly, inefficient, and difficult to perform. In this study, we used a radiation mutation method based on linear electron acceleration to mutate cotton variety ‘TM-1’, for which a whole-genome sequence has previously been performed, to create a high throughput cotton mutant library. Abundant phenotypic variation was observed in the progeny population for three consecutive generations, including cotton fiber color variation, plant dwarfing, significant improvement of yield traits, and increased sensitivity to Verticillium wilt. These results show that radiation mutagenesis is an effective and feasible method to create plant mutant libraries. Cotton (Gossypium spp.) is one of the most important cash crops. Research on the function of specific genes of cotton lags behind due to the lack of sufficient genetic material. A mutant library based on cotton variety ‘TM-1’ was created. A group of mutants with various phenotypes were identified.
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19
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Guéguen Y, Frerejacques M. Review of Knowledge of Uranium-Induced Kidney Toxicity for the Development of an Adverse Outcome Pathway to Renal Impairment. Int J Mol Sci 2022; 23:ijms23084397. [PMID: 35457214 PMCID: PMC9030063 DOI: 10.3390/ijms23084397] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 02/04/2023] Open
Abstract
An adverse outcome pathway (AOP) is a conceptual construct of causally and sequentially linked events, which occur during exposure to stressors, with an adverse outcome relevant to risk assessment. The development of an AOP is a means of identifying knowledge gaps in order to prioritize research assessing the health risks associated with exposure to physical or chemical stressors. In this paper, a review of knowledge was proposed, examining experimental and epidemiological data, in order to identify relevant key events and potential key event relationships in an AOP for renal impairment, relevant to stressors such as uranium (U). Other stressors may promote similar pathways, and this review is a necessary step to compare and combine knowledge reported for nephrotoxicants. U metal ions are filtered through the glomerular membrane of the kidneys, then concentrate in the cortical and juxtaglomerular areas, and bind to the brush border membrane of the proximal convoluted tubules. U uptake by epithelial cells occurs through endocytosis and the sodium-dependent phosphate co-transporter (NaPi-IIa). The identified key events start with the inhibition of the mitochondria electron transfer chain and the collapse of mitochondrial membrane potential, due to cytochrome b5/cytochrome c disruption. In the nucleus, U directly interacts with negatively charged DNA phosphate, thereby inducing an adduct formation, and possibly DNA strand breaks or cross-links. U also compromises DNA repair by inhibiting zing finger proteins. Thereafter, U triggers the Nrf2, NF-κB, or endoplasmic reticulum stress pathways. The resulting cellular key events include oxidative stress, DNA strand breaks and chromosomal aberrations, apoptosis, and pro-inflammatory effects. Finally, the main adverse outcome is tubular damage of the S2 and S3 segments of the kidneys, leading to tubular cell death, and then kidney failure. The attribution of renal carcinogenesis due to U is controversial, and specific experimental or epidemiological studies must be conducted. A tentative construction of an AOP for uranium-induced kidney toxicity and failure was proposed.
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20
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Posypanova GA, Ratushnyak MG, Semochkina YP, Strepetov AN. Response of murine neural stem/progenitor cells to gamma-neutron radiation. Int J Radiat Biol 2022; 98:1559-1570. [PMID: 35311625 DOI: 10.1080/09553002.2022.2055802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE In recent years, a growing number of studies have focused on the mechanisms of action of densely ionizing radiation. This is associated with the development of radiation therapy of tumors using accelerated ions. The use of densely ionizing radiation appears to be the most promising method, optimal for treating patients with severe radioresistant forms, such as widespread head and neck tumors, recurrent and metastatic tumors, and some forms of brain tumors. The goal of our study was to investigate the effects of gamma-neutron radiation on mouse neural stem/progenitor cells (NSCs/NPCs). METHODS NSCs/NPCs were isolated from neonatal mouse brains. Cells were irradiated in a collimated beam of neutrons and gamma rays of the IR-8 nuclear reactor. At 5 and 7 days after irradiation, cells and neurospheres were counted to assess survival. The number of DNA double-strand breaks and their repair efficiency were determined by immunocytochemical γH2AX staining followed by counting the number of γH2AX foci using a fluorescent microscope. RESULTS We observed a dose-dependent decrease in the survival of NSCs/NPCs after irradiation at doses above 100 mGy and stimulation of the proliferation of these cells at doses of 25 and 50 mGy. In terms of a decrease in cell survival, the effect of gamma-neutron irradiation significantly exceeded the effect of gamma irradiation: the maximum value of the relative biological efficiency for gamma-neutron irradiation comprised 9.7. Gamma-neutron irradiation led to the formation of double-strand DNA breaks detected by the formation of foci of histone γH2AX in the cell nuclei. The γH2AX foci formed after gamma-neutron irradiation of NSCs/NPCs at doses of 100-500 mGy were characterized by a larger size in comparison with foci induced by gamma irradiation and gamma-neutron irradiation at a dose of 50 mGy. The repair of double-strand DNA breaks induced by γ,n-irradiation was slow; the repair rate depended on the radiation dose. CONCLUSIONS The data obtained indicate high sensitivity of proliferating NSCs/NPCs to gamma-neutron radiation. High RBE of gamma-neutron radiation requires special measures to protect the neurogenic regions of the brain when using this type of radiation in radiation therapy.
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21
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Penninckx S, Pariset E, Cekanaviciute E, Costes SV. Quantification of radiation-induced DNA double strand break repair foci to evaluate and predict biological responses to ionizing radiation. NAR Cancer 2021; 3:zcab046. [PMID: 35692378 PMCID: PMC8693576 DOI: 10.1093/narcan/zcab046] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/08/2021] [Accepted: 12/17/2021] [Indexed: 08/08/2023] Open
Abstract
Radiation-induced foci (RIF) are nuclear puncta visualized by immunostaining of proteins that regulate DNA double-strand break (DSB) repair after exposure to ionizing radiation. RIF are a standard metric for measuring DSB formation and repair in clinical, environmental and space radiobiology. The time course and dose dependence of their formation has great potential to predict in vivo responses to ionizing radiation, predisposition to cancer and probability of adverse reactions to radiotherapy. However, increasing complexity of experimentally and therapeutically setups (charged particle, FLASH …) is associated with several confounding factors that must be taken into account when interpreting RIF values. In this review, we discuss the spatiotemporal characteristics of RIF development after irradiation, addressing the common confounding factors, including cell proliferation and foci merging. We also describe the relevant endpoints and mathematical models that enable accurate biological interpretation of RIF formation and resolution. Finally, we discuss the use of RIF as a biomarker for quantification and prediction of in vivo radiation responses, including important caveats relating to the choice of the biological endpoint and the detection method. This review intends to help scientific community design radiobiology experiments using RIF as a key metric and to provide suggestions for their biological interpretation.
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Affiliation(s)
- Sébastien Penninckx
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Medical Physics Department, Jules Bordet Institute, Université Libre de Bruxelles, 1 Rue Héger-Bordet, 1000 Brussels, Belgium
| | - Eloise Pariset
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
- Universities Space Research Association, 615 National Avenue, Mountain View, CA 94043, USA
| | - Egle Cekanaviciute
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
| | - Sylvain V Costes
- To whom correspondence should be addressed. Tel: +1 650 604 5343;
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22
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Luo L, Yan C, Fuchi N, Kodama Y, Zhang X, Shinji G, Miura K, Sasaki H, Li TS. Mesenchymal stem cell-derived extracellular vesicles as probable triggers of radiation-induced heart disease. Stem Cell Res Ther 2021; 12:422. [PMID: 34294160 PMCID: PMC8296737 DOI: 10.1186/s13287-021-02504-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 07/08/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Radiation-induced heart disease has been reported, but the underlying mechanisms remain unclear. Mesenchymal stem cells (MSCs), also residing in the heart, are highly susceptible to radiation. We examined the hypothesis that the altered secretion of extracellular vesicles (EVs) from MSCs is the trigger of radiation-induced heart disease. METHODS By exposing human placental tissue-derived MSCs to 5 Gy γ-rays, we then isolated EVs from the culture medium 48 h later and evaluated the changes in quantity and quality of EVs from MSCs after radiation exposure. The biological effects of EVs from irradiated MSCs on HUVECs and H9c2 cells were also examined. RESULTS Although the amount and size distribution of EVs did not differ between the nonirradiated and irradiated MSCs, miRNA sequences indicated many upregulated or downregulated miRNAs in irradiated MSCs EVs. In vitro experiments using HUVEC and H9c2 cells showed that irradiated MSC-EVs decreased cell proliferation (P < 0.01), but increased cell apoptosis and DNA damage. Moreover, irradiated MSC-EVs impaired the HUVEC tube formation and induced calcium overload in H9c2 cells. CONCLUSIONS EVs released from irradiated MSCs show altered miRNA profiles and harmful effects on heart cells, which provides new insight into the mechanism of radiation-related heart disease risks.
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Affiliation(s)
- Lan Luo
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
- Medical Technology School of Xuzhou Medical University, Xuzhou Key Laboratory of Laboratory Diagnostics, Tongshan Road 209, Xuzhou, 221004, China
| | - Chen Yan
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - Naoki Fuchi
- Department of Obstetrics and Gynecology, Nagasaki University Hospital, Nagasaki, 852-8523, Japan
| | - Yukinobu Kodama
- Department of Pharmacy, Nagasaki University Hospital, Nagasaki, 852-8523, Japan
| | - Xu Zhang
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - Goto Shinji
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - Kiyonori Miura
- Department of Obstetrics and Gynecology, Nagasaki University Hospital, Nagasaki, 852-8523, Japan
| | - Hitoshi Sasaki
- Department of Pharmacy, Nagasaki University Hospital, Nagasaki, 852-8523, Japan
| | - Tao-Sheng Li
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.
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23
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Suzuki K, Amrenova A, Mitsutake N. Recent advances in radiobiology with respect to pleiotropic aspects of tissue reaction. J Radiat Res 2021; 62:i30-i35. [PMID: 33978178 PMCID: PMC8114206 DOI: 10.1093/jrr/rraa086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/09/2020] [Indexed: 06/12/2023]
Abstract
DNA double-strand breaks (DSBs) induced by ionizing radiation are the major cause of cell death, leading to tissue/organ injuries, which is a fundamental mechanism underlying the development of tissue reaction. Since unscheduled senescence, predominantly induced among epithelial tissues/organs, is one of the major modes of cell death in response to radiation exposure, its role in tissue reaction has been extensively studied, and it has become clear that senescence-mediated secretion of soluble factors is an indispensable component of the manifestation of tissue reaction. Recently, an unexpected link between cytoplasmic DSBs and innate immunity was discovered. The activation of cyclic GMP-AMP (cGAMP) synthase (cGAS) results in the stimulation of the cGAS-stimulator of interferon genes (STING) pathway, which has been shown to regulate the transactivation of a variety of secretory factors that are the same as those secreted from senescent cells. Furthermore, it has been proven that cGAS-STING pathway also mediates execution of the senescence process by itself. Hence, an autocrine/paracrine feedback loop has been discussed in previous literature in relation to its effect on the tissue microenvironment. As the tissue microenvironment plays a crucial role in cancer development, tissue reaction could be involved in the late health effects caused by radiation exposure. In this paper, the novel findings in radiation biology, which should provide a better understanding of the mechanisms underlying radiation-induced carcinogenesis, are overviewed.
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Affiliation(s)
- Keiji Suzuki
- Department of Radiation Medical Sciences, Nagasaki University Atomic Bomb Disease Institute. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
- Life Sciences and Radiation Research, Graduate School of Biomedical Sciences, Nagasaki University. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
| | - Aidana Amrenova
- Department of Radiation Medical Sciences, Nagasaki University Atomic Bomb Disease Institute. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
- Life Sciences and Radiation Research, Graduate School of Biomedical Sciences, Nagasaki University. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
| | - Norisato Mitsutake
- Department of Radiation Medical Sciences, Nagasaki University Atomic Bomb Disease Institute. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
- Life Sciences and Radiation Research, Graduate School of Biomedical Sciences, Nagasaki University. 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
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Rusin M, Ghobrial N, Takacs E, Willey JS, Dean D. Changes in ionizing radiation dose rate affect cell cycle progression in adipose derived stem cells. PLoS One 2021; 16:e0250160. [PMID: 33905436 PMCID: PMC8078807 DOI: 10.1371/journal.pone.0250160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 04/01/2021] [Indexed: 01/08/2023] Open
Abstract
Biomedical use of radiation is utilized in effective diagnostic and treatment tools, yet can introduce risks to healthy tissues. High energy photons used for diagnostic purposes have high penetration depth and can discriminate multiple tissues based on attenuation properties of different materials. Likewise, the ability to deposit energy at various targets within tumors make the use of photons effective treatment for cancer. Radiation focused on a tumor will deposit energy when it interacts with a biological structure (e.g. DNA), which will result in cell kill should repair capacity of the tissue be overwhelmed. Likewise, damage to normal, non-cancerous tissues is a consequence of radiation that can lead to acute or late, chronic toxicity profiles. Adipose derived stem cells (ADSCs) are mesenchymal stem cells that have been proven to have similar characteristics to bone marrow derived stem cells, except that they are much easier to obtain. Within the body, ADSCs act as immunomodulators and assist with the maintenance and repair of tissues. They have been shown to have excellent differentiation capability, making them an extremely viable option for stem cell therapies and regenerative medicine applications. Due to the tissue ADSCs are derived from, they are highly likely to be affected by radiation therapy, especially when treating tumors localized to structures with relatively high ADSC content (eg., breast cancer). For this reason, the purpose behind this research is to better understand how ADSCs are affected by doses of radiation comparable to a single fraction of radiation therapy. We also measured the response of ADSCs to exposure at different dose rates to determine if there is a significant difference in the response of ADSCs to radiation therapy relevant doses of ionizing radiation. Our findings indicate that ADSCs exposed to Cesium (Cs 137)-gamma rays at a moderate dose of 2Gy and either a low dose rate (1.40Gy/min) or a high dose rate (7.31Gy/min) slow proliferation rate, and with cell cycle arrest in some populations. These responses ADSCs were not as marked as previously measured in other stem cell types. In addition, our results indicate that differences in dose rate in the Gy/min range typically utilized in small animal or cell irradiation platforms have a minimal effect on the function of ADSCs. The potential ADSCs have in the space of regenerative medicine makes them an ideal candidate for study with ionizing radiation, as they are one of the main cell types to promote tissue healing.
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Affiliation(s)
- Matthew Rusin
- Bioengineering Department, Clemson University, Clemson, South Carolina, United States of America
| | - Nardine Ghobrial
- Bioengineering Department, Clemson University, Clemson, South Carolina, United States of America
| | - Endre Takacs
- Physics and Astronomy Department, Clemson University, Clemson, South Carolina, United States of America
| | - Jeffrey S. Willey
- Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Delphine Dean
- Bioengineering Department, Clemson University, Clemson, South Carolina, United States of America
- * E-mail:
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25
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Zaharieva E, Sasatani M, Matsumoto R, Kamiya K. Formation of DNA Damage Foci in Human and Mouse Primary Fibroblasts Chronically Exposed to Gamma Radiation at 0.1 mGy/min. Radiat Res 2021; 196:40-54. [PMID: 33857310 DOI: 10.1667/rade-20-00059.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 03/11/2021] [Indexed: 11/03/2022]
Abstract
Low-dose-rate radiation exposures and their associated cancer risk are an important concern for radiation protection today. Nevertheless, there is almost no data concerning DNA damage at dose rates below 0.1 mGy/min. In this study, we investigated the formation of DNA damage repair foci under chronic low-dose-rate irradiation relative to acute high-dose-rate irradiation and assessed the magnitude of the dose-rate effect. Four human and four mouse normal fibroblast cell models from different organs were subjected to gamma irradiation at 0.096 mGy/min or 0.81 Gy/min, and dose-response curves were established for the dose range from 0.1 to 0.8 Gy. The results indicate that prolonged low-dose-rate exposures cause modestly increased levels of DNA repair foci, with a strongly supralinear dose-response relationship, where 40-70% of the radiation effect at 1 Gy was already present at the total dose of 0.1 Gy. Thus, compared to acute irradiation, low-dose-rate exposure was 6-9 times less efficient at a total dose of 0.1 Gy, and 10-20 times less efficient at 1 Gy. Comparison between cell models revealed a certain correlation between the presence of persistent, above-background foci at 48 h after irradiation and the sensitivity to low-dose-rate radiation, suggesting that repair capacity plays an important role in the cellular response to chronic irradiation. Given the findings reported here, we propose that establishing detailed dose-response curves and accounting for the repair rates of different cell models are essential steps in elucidating dose-rate effects.
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Affiliation(s)
- Elena Zaharieva
- Department of Experimental Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Megumi Sasatani
- Department of Experimental Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Ryoga Matsumoto
- Graduate School of Medicine, Hiroshima University, Hiroshima, Japan
| | - Kenji Kamiya
- Department of Experimental Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
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26
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Sekaran TSG, Kedilaya VR, Kumari SN, Shetty P, Gollapalli P. Exploring the differentially expressed genes in human lymphocytes upon response to ionizing radiation: a network biology approach. Radiat Oncol J 2021; 39:48-60. [PMID: 33794574 PMCID: PMC8024183 DOI: 10.3857/roj.2021.00045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/22/2021] [Indexed: 01/27/2023] Open
Abstract
Purpose The integration of large-scale gene data and their functional analysis needs the effective application of various computational tools. Here we attempted to unravel the biological processes and cellular pathways in response to ionizing radiation using a systems biology approach. Materials and Methods Analysis of gene ontology shows that 80, 42, 25, and 35 genes have roles in the biological process, molecular function, the cellular process, and immune system pathways, respectively. Therefore, our study emphasizes gene/protein network analysis on various differentially expressed genes (DEGs) to reveal the interactions between those proteins and their functional contribution upon radiation exposure. Results A gene/protein interaction network was constructed, which comprises 79 interactors with 718 interactions and TP53, MAPK8, MAPK1, CASP3, MAPK14, ATM, NOTCH1, VEGFA, SIRT1, and PRKDC are the top 10 proteins in the network with high betweenness centrality values. Further, molecular complex detection was used to cluster these associated partners in the network, which produced three effective clusters based on the Molecular Complex Detection (MCODE) score. Interestingly, we found a high functional similarity from the associated genes/proteins in the network with known radiation response genes. Conclusion This network-based approach on DEGs of human lymphocytes upon response to ionizing radiation provides clues for an opportunity to improve therapeutic efficacy.
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Affiliation(s)
| | - Vishakh R Kedilaya
- Central Research Laboratory, K. S. Hegde Medical Academy, Nitte (Deemed to be University), Mangalore, India
| | - Suchetha N Kumari
- Central Research Laboratory, K. S. Hegde Medical Academy, Nitte (Deemed to be University), Mangalore, India
| | - Praveenkumar Shetty
- Central Research Laboratory, K. S. Hegde Medical Academy, Nitte (Deemed to be University), Mangalore, India
| | - Pavan Gollapalli
- Central Research Laboratory, K. S. Hegde Medical Academy, Nitte (Deemed to be University), Mangalore, India
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27
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Sanchez-Cano C, Alvarez-Puebla RA, Abendroth JM, Beck T, Blick R, Cao Y, Caruso F, Chakraborty I, Chapman HN, Chen C, Cohen BE, Conceição ALC, Cormode DP, Cui D, Dawson KA, Falkenberg G, Fan C, Feliu N, Gao M, Gargioni E, Glüer CC, Grüner F, Hassan M, Hu Y, Huang Y, Huber S, Huse N, Kang Y, Khademhosseini A, Keller TF, Körnig C, Kotov NA, Koziej D, Liang XJ, Liu B, Liu S, Liu Y, Liu Z, Liz-Marzán LM, Ma X, Machicote A, Maison W, Mancuso AP, Megahed S, Nickel B, Otto F, Palencia C, Pascarelli S, Pearson A, Peñate-Medina O, Qi B, Rädler J, Richardson JJ, Rosenhahn A, Rothkamm K, Rübhausen M, Sanyal MK, Schaak RE, Schlemmer HP, Schmidt M, Schmutzler O, Schotten T, Schulz F, Sood AK, Spiers KM, Staufer T, Stemer DM, Stierle A, Sun X, Tsakanova G, Weiss PS, Weller H, Westermeier F, Xu M, Yan H, Zeng Y, Zhao Y, Zhao Y, Zhu D, Zhu Y, Parak WJ. X-ray-Based Techniques to Study the Nano-Bio Interface. ACS Nano 2021; 15:3754-3807. [PMID: 33650433 PMCID: PMC7992135 DOI: 10.1021/acsnano.0c09563] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/25/2021] [Indexed: 05/03/2023]
Abstract
X-ray-based analytics are routinely applied in many fields, including physics, chemistry, materials science, and engineering. The full potential of such techniques in the life sciences and medicine, however, has not yet been fully exploited. We highlight current and upcoming advances in this direction. We describe different X-ray-based methodologies (including those performed at synchrotron light sources and X-ray free-electron lasers) and their potentials for application to investigate the nano-bio interface. The discussion is predominantly guided by asking how such methods could better help to understand and to improve nanoparticle-based drug delivery, though the concepts also apply to nano-bio interactions in general. We discuss current limitations and how they might be overcome, particularly for future use in vivo.
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Affiliation(s)
- Carlos Sanchez-Cano
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014 Donostia San Sebastián, Spain
| | - Ramon A. Alvarez-Puebla
- Universitat
Rovira i Virgili, 43007 Tarragona, Spain
- ICREA, Passeig Lluís
Companys 23, 08010 Barcelona, Spain
| | - John M. Abendroth
- Department
of Materials Science and Engineering, Stanford
University, Stanford, California 94305, United States
| | - Tobias Beck
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Robert Blick
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Yuan Cao
- Department
of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Biointerfaces
Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Frank Caruso
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology
and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Indranath Chakraborty
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Henry N. Chapman
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Centre
for Ultrafast Imaging, Universität
Hamburg, 22761 Hamburg, Germany
- Deutsches
Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Chunying Chen
- National
Center for Nanoscience and Technology (NCNST), 100190 Beijing China
| | - Bruce E. Cohen
- The
Molecular Foundry and Division of Molecular Biophysics and Integrated
Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | | | - David P. Cormode
- Radiology
Department, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Daxiang Cui
- School
of Chemistry and Chemical Engineering, Frontiers Science Center for
Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | | | - Gerald Falkenberg
- Deutsches
Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Chunhai Fan
- School
of Chemistry and Chemical Engineering, Frontiers Science Center for
Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Neus Feliu
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- CAN, Fraunhofer Institut, 20146 Hamburg, Germany
| | - Mingyuan Gao
- Department
of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Elisabetta Gargioni
- Department
of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Claus-C. Glüer
- Section
Biomedical Imaging, Department of Radiology and Neuroradiology, University Medical Clinic Schleswig-Holstein and Christian-Albrechts-University
Kiel, 24105 Kiel, Germany
| | - Florian Grüner
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Universität
Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Moustapha Hassan
- Karolinska University Hospital, Huddinge, and Karolinska
Institutet, 17177 Stockholm, Sweden
| | - Yong Hu
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Yalan Huang
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Samuel Huber
- Department
of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Nils Huse
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Yanan Kang
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, California 90049, United States
| | - Thomas F. Keller
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Deutsches
Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Christian Körnig
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Universität
Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Nicholas A. Kotov
- Department
of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Biointerfaces
Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Michigan
Institute for Translational Nanotechnology (MITRAN), Ypsilanti, Michigan 48198, United States
| | - Dorota Koziej
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Xing-Jie Liang
- National
Center for Nanoscience and Technology (NCNST), 100190 Beijing China
| | - Beibei Liu
- Department
of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology,
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 China
| | - Yang Liu
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Ziyao Liu
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Luis M. Liz-Marzán
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014 Donostia San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- Centro de Investigación Biomédica
en Red de Bioingeniería,
Biomateriales y Nanomedicina (CIBER-BBN), Paseo de Miramon 182, 20014 Donostia-San Sebastián, Spain
| | - Xiaowei Ma
- National
Center for Nanoscience and Technology (NCNST), 100190 Beijing China
| | - Andres Machicote
- Department
of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Wolfgang Maison
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Adrian P. Mancuso
- European XFEL, 22869 Schenefeld, Germany
- Department of Chemistry and Physics, La
Trobe Institute for Molecular
Science, La Trobe University, Melbourne 3086, Victoria, Australia
| | - Saad Megahed
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Bert Nickel
- Sektion Physik, Ludwig Maximilians Universität
München, 80539 München, Germany
| | - Ferdinand Otto
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Cristina Palencia
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | | | - Arwen Pearson
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Oula Peñate-Medina
- Section
Biomedical Imaging, Department of Radiology and Neuroradiology, University Medical Clinic Schleswig-Holstein and Christian-Albrechts-University
Kiel, 24105 Kiel, Germany
| | - Bing Qi
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Joachim Rädler
- Sektion Physik, Ludwig Maximilians Universität
München, 80539 München, Germany
| | - Joseph J. Richardson
- ARC
Centre of Excellence in Convergent Bio-Nano Science and Technology
and the Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Axel Rosenhahn
- Department
of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Kai Rothkamm
- Department
of Radiotherapy and Radiation Oncology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Michael Rübhausen
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | | | - Raymond E. Schaak
- Department of Chemistry, Department of Chemical Engineering,
and
Materials Research Institute, The Pennsylvania
State University, University Park, Pensylvania 16802, United States
| | - Heinz-Peter Schlemmer
- Department of Radiology, German Cancer
Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Marius Schmidt
- Department of Physics, University
of Wisconsin-Milwaukee, 3135 N. Maryland Avenue, Milwaukee, Wisconsin 53211, United States
| | - Oliver Schmutzler
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Universität
Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | | | - Florian Schulz
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - A. K. Sood
- Department of Physics, Indian Institute
of Science, Bangalore 560012, India
| | - Kathryn M. Spiers
- Deutsches
Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Theresa Staufer
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Universität
Hamburg and Center for Free-Electron Laser Science, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Dominik M. Stemer
- California NanoSystems Institute, University
of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Andreas Stierle
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Deutsches
Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Xing Sun
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- Molecular Science and Biomedicine Laboratory (MBL) State
Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry
and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Gohar Tsakanova
- Institute of Molecular Biology of National
Academy of Sciences of
Republic of Armenia, 7 Hasratyan str., 0014 Yerevan, Armenia
- CANDLE Synchrotron Research Institute, 31 Acharyan str., 0040 Yerevan, Armenia
| | - Paul S. Weiss
- California NanoSystems Institute, University
of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department
of Chemistry and Biochemistry, University
of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Bioengineering, University
of California, Los Angeles, Los Angeles, California 90095, United States
| | - Horst Weller
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- CAN, Fraunhofer Institut, 20146 Hamburg, Germany
| | - Fabian Westermeier
- Deutsches
Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Ming Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology,
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 China
| | - Huijie Yan
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Yuan Zeng
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Ying Zhao
- Karolinska University Hospital, Huddinge, and Karolinska
Institutet, 17177 Stockholm, Sweden
| | - Yuliang Zhao
- National
Center for Nanoscience and Technology (NCNST), 100190 Beijing China
| | - Dingcheng Zhu
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
| | - Ying Zhu
- Bioimaging Center, Shanghai Synchrotron Radiation Facility,
Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
- Division of Physical Biology, CAS Key Laboratory
of Interfacial
Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Wolfgang J. Parak
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014 Donostia San Sebastián, Spain
- Mathematics,
Informatics, and Natural Sciences (MIN) Faculty, University of Hamburg, 20354 Hamburg, Germany
- School
of Chemistry and Chemical Engineering, Frontiers Science Center for
Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
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Chauhan V, Wilkins RC, Beaton D, Sachana M, Delrue N, Yauk C, O’Brien J, Marchetti F, Halappanavar S, Boyd M, Villeneuve D, Barton-Maclaren TS, Meek B, Anghel C, Heghes C, Barber C, Perkins E, Leblanc J, Burtt J, Laakso H, Laurier D, Lazo T, Whelan M, Thomas R, Cool D. Bringing together scientific disciplines for collaborative undertakings: a vision for advancing the adverse outcome pathway framework. Int J Radiat Biol 2021; 97:431-441. [PMID: 33539251 PMCID: PMC10711570 DOI: 10.1080/09553002.2021.1884314] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 01/04/2023]
Abstract
BACKGROUND Decades of research to understand the impacts of various types of environmental occupational and medical stressors on human health have produced a vast amount of data across many scientific disciplines. Organizing these data in a meaningful way to support risk assessment has been a significant challenge. To address this and other challenges in modernizing chemical health risk assessment, the Organisation for Economic Cooperation and Development (OECD) formalized the adverse outcome pathway (AOP) framework, an approach to consolidate knowledge into measurable key events (KEs) at various levels of biological organisation causally linked to disease based on the weight of scientific evidence (http://oe.cd/aops). Currently, AOPs have been considered predominantly in chemical safety but are relevant to radiation. In this context, the Nuclear Energy Agency's (NEA's) High-Level Group on Low Dose Research (HLG-LDR) is working to improve research co-ordination, including radiological research with chemical research, identify synergies between the fields and to avoid duplication of efforts and resource investments. To this end, a virtual workshop was held on 7 and 8 October 2020 with experts from the OECD AOP Programme together with the radiation and chemical research/regulation communities. The workshop was a coordinated effort of Health Canada, the Electric Power Research Institute (EPRI), and the Nuclear Energy Agency (NEA). The AOP approach was discussed including key issues to fully embrace its value and catalyze implementation in areas of radiation risk assessment. CONCLUSIONS A joint chemical and radiological expert group was proposed as a means to encourage cooperation between risk assessors and an initial vision was discussed on a path forward. A global survey was suggested as a way to identify priority health outcomes of regulatory interest for AOP development. Multidisciplinary teams are needed to address the challenge of producing the appropriate data for risk assessments. Data management and machine learning tools were highlighted as a way to progress from weight of evidence to computational causal inference.
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Affiliation(s)
- Vinita Chauhan
- Consumer and Clinical Radiation Protection Bureau, Health Canada, Ottawa, Canada
| | - Ruth C. Wilkins
- Consumer and Clinical Radiation Protection Bureau, Health Canada, Ottawa, Canada
| | | | - Magdalini Sachana
- Environment Health and Safety Division, Environment Directorate, Organisation for Economic Co-operation and Development (OECD), Paris, France
| | - Nathalie Delrue
- Environment Health and Safety Division, Environment Directorate, Organisation for Economic Co-operation and Development (OECD), Paris, France
| | - Carole Yauk
- Department of Biology, University of Ottawa, Ottawa, Canada
| | - Jason O’Brien
- Ecotoxicology and Wildlife Health Division, Environment and Climate Change Canada, Ottawa, Canada
| | - Francesco Marchetti
- Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Canada
| | - Sabina Halappanavar
- Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Canada
| | - Michael Boyd
- U.S. Environmental Protection Agency, Office of Air and Radiation, Washington, DC, USA
| | - Daniel Villeneuve
- U.S. Environmental Protection Agency, Office of Research and Development, Duluth, MN, USA
| | | | - Bette Meek
- McLaughlin Centre, University of Ottawa, Ottawa, Canada
| | | | | | | | - Edward Perkins
- US Army Engineer Research and Development Center Jackson, Vicksburg, MS, USA
| | - Julie Leblanc
- Directorate of Environment and Radiation Protection and Assessment, Canadian Nuclear Safety Commission, Ottawa, Canada
| | - Julie Burtt
- Directorate of Environment and Radiation Protection and Assessment, Canadian Nuclear Safety Commission, Ottawa, Canada
| | - Holly Laakso
- Canadian Nuclear Laboratories, Chalk River, Canada
| | - Dominique Laurier
- Health and Environment Division, Institute for Radiological Protection and Nuclear Safety (IRSN), Fontenay-aux-Roses, France
| | - Ted Lazo
- Radiological Protection and Human Aspects of Nuclear Safety Division, OECD Nuclear Energy Agency, Paris, France
| | - Maurice Whelan
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Russell Thomas
- U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Donald Cool
- Electric Power Research Institute, Charlotte, NC, USA
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Sadhukhan R, Majumdar D, Garg S, Landes RD, McHargue V, Pawar SA, Chowdhury P, Griffin RJ, Narayanasamy G, Boerma M, Dobretsov M, Hauer-Jensen M, Pathak R. Simultaneous exposure to chronic irradiation and simulated microgravity differentially alters immune cell phenotype in mouse thymus and spleen. Life Sci Space Res (Amst) 2021; 28:66-73. [PMID: 33612181 PMCID: PMC7900614 DOI: 10.1016/j.lssr.2020.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/24/2020] [Accepted: 09/23/2020] [Indexed: 05/25/2023]
Abstract
Deep-space missions may alter immune cell phenotype in the primary (e.g., thymus) and secondary (e.g., spleen) lymphoid organs contributing to the progression of a variety of diseases. In deep space missions, astronauts will be exposed to chronic low doses of HZE radiation while being in microgravity. Ground-based models of long-term uninterrupted exposures to HZE radiation are not yet available. To obtain insight in the effects of concurrent exposure to microgravity and chronic irradiation (CIR), mice received a cumulative dose of chronic 0.5 Gy gamma rays over one month ± simulated microgravity (SMG). To obtain insight in a dose rate effect, additional mice were exposed to single acute irradiation (AIR) at 0.5 Gy gamma rays. We measured proportions of immune cells relative to total number of live cells in the thymus and spleen, stress level markers in plasma, and change in body weight, food consumption, and water intake. CIR affected thymic CD3+/CD335+ natural killer T (NK-T) cells, CD25+ regulatory T (Treg) cells, CD27+/CD335- natural killer (NK1) cells and CD11c+/CD11b- dendritic cells (DCs) differently in mice subjected to SMG than in mice with normal loading. No such effects of CIR on SMG as compared to normal loading were observed in cell types from the spleen. Differences between CIR and AIR groups (both under normal loading) were found in thymic Treg and DCs. Food consumption, water intake, and body weight were less after coexposure than singular or no exposure. Compared to sham, all treatment groups exhibited elevated plasma levels of the stress marker catecholamines. These data suggest that microgravity and chronic irradiation may interact with each other to alter immune cell phenotypes in an organ-specific manner and appropriate strategies are required to reduce the health risk of crewmembers.
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Affiliation(s)
- Ratan Sadhukhan
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Debajyoti Majumdar
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Sarita Garg
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Reid D Landes
- Department of Biostatistics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Victoria McHargue
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Snehalata A Pawar
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Parimal Chowdhury
- Department of Physiology and Biophysics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Robert J Griffin
- Department of Radiation Oncology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Ganesh Narayanasamy
- Department of Radiation Oncology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Marjan Boerma
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Maxim Dobretsov
- Department of Anesthesiology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States; I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, Sankt-Petersburg, Russian Federation
| | - Martin Hauer-Jensen
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States
| | - Rupak Pathak
- Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, United States.
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Maier A, Wiedemann J, Rapp F, Papenfuß F, Rödel F, Hehlgans S, Gaipl US, Kraft G, Fournier C, Frey B. Radon Exposure-Therapeutic Effect and Cancer Risk. Int J Mol Sci 2020; 22:ijms22010316. [PMID: 33396815 PMCID: PMC7796069 DOI: 10.3390/ijms22010316] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 01/18/2023] Open
Abstract
Largely unnoticed, all life on earth is constantly exposed to low levels of ionizing radiation. Radon, an imperceptible natural occurring radioactive noble gas, contributes as the largest single fraction to radiation exposure from natural sources. For that reason, radon represents a major issue for radiation protection. Nevertheless, radon is also applied for the therapy of inflammatory and degenerative diseases in galleries and spas to many thousand patients a year. In either case, chronic environmental exposure or therapy, the effect of radon on the organism exposed is still under investigation at all levels of interaction. This includes the physical stage of diffusion and energy deposition by radioactive decay of radon and its progeny and the biological stage of initiating and propagating a physiologic response or inducing cancer after chronic exposure. The purpose of this manuscript is to comprehensively review the current knowledge of radon and its progeny on physical background, associated cancer risk and potential therapeutic effects.
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Affiliation(s)
- Andreas Maier
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany; (A.M.); (J.W.); (F.R.); (F.P.); (G.K.); (C.F.)
| | - Julia Wiedemann
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany; (A.M.); (J.W.); (F.R.); (F.P.); (G.K.); (C.F.)
| | - Felicitas Rapp
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany; (A.M.); (J.W.); (F.R.); (F.P.); (G.K.); (C.F.)
| | - Franziska Papenfuß
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany; (A.M.); (J.W.); (F.R.); (F.P.); (G.K.); (C.F.)
| | - Franz Rödel
- Department of Radiotherapy and Oncology, University Hospital Frankfurt, Goethe-Universität Frankfurt am Main, 60590 Frankfurt am Main, Germany; (F.R.); (S.H.)
| | - Stephanie Hehlgans
- Department of Radiotherapy and Oncology, University Hospital Frankfurt, Goethe-Universität Frankfurt am Main, 60590 Frankfurt am Main, Germany; (F.R.); (S.H.)
| | - Udo S. Gaipl
- Translational Radiation Biology, Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany;
| | - Gerhard Kraft
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany; (A.M.); (J.W.); (F.R.); (F.P.); (G.K.); (C.F.)
| | - Claudia Fournier
- Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany; (A.M.); (J.W.); (F.R.); (F.P.); (G.K.); (C.F.)
| | - Benjamin Frey
- Translational Radiation Biology, Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany;
- Correspondence:
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31
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Preston RJ, Rühm W, Azzam EI, Boice JD, Bouffler S, Held KD, Little MP, Shore RE, Shuryak I, Weil MM. Adverse outcome pathways, key events, and radiation risk assessment. Int J Radiat Biol 2020; 97:804-814. [PMID: 33211576 PMCID: PMC10666972 DOI: 10.1080/09553002.2020.1853847] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 12/12/2022]
Abstract
The overall aim of this contribution to the 'Second Bill Morgan Memorial Special Issue' is to provide a high-level review of a recent report developed by a Committee for the National Council on Radiation Protection and Measurements (NCRP) titled 'Approaches for Integrating Information from Radiation Biology and Epidemiology to Enhance Low-Dose Health Risk Assessment'. It derives from previous NCRP Reports and Commentaries that provide the case for integrating data from radiation biology studies (available and proposed) with epidemiological studies (also available and proposed) to develop Biologically-Based Dose-Response (BBDR) models. In this review, it is proposed for such models to leverage the adverse outcome pathways (AOP) and key events (KE) approach for better characterizing radiation-induced cancers and circulatory disease (as the example for a noncancer outcome). The review discusses the current state of knowledge of mechanisms of carcinogenesis, with an emphasis on radiation-induced cancers, and a similar discussion for circulatory disease. The types of the various informative BBDR models are presented along with a proposed generalized BBDR model for cancer and a more speculative one for circulatory disease. The way forward is presented in a comprehensive discussion of the research needs to address the goal of enhancing health risk assessment of exposures to low doses of radiation. The use of an AOP/KE approach for developing a mechanistic framework for BBDR models of radiation-induced cancer and circulatory disease is considered to be a viable one based upon current knowledge of the mechanisms of formation of these adverse health outcomes and the available technical capabilities and computational advances. The way forward for enhancing low-dose radiation risk estimates will require there to be a tight integration of epidemiology data and radiation biology information to meet the goals of relevance and sensitivity of the adverse health outcomes required for overall health risk assessment at low doses and dose rates.
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Affiliation(s)
- R Julian Preston
- Office of Air and Radiation, Radiation Protection Division, U.S. Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Werner Rühm
- Institute of Radiation Medicine, Helmholtz Zentrum Muenchen, German Research Center for Environmental Health (GmbH) Ingolstaedter, Neuherberg, Germany
| | - Edouard I Azzam
- Department of Radiology, Rutgers Biomedical and Health Sciences, New Jersey Medical School, Newark, NJ, USA
| | - John D Boice
- National Council on Radiation Protection and Measurement, Bethesda, MD, USA
| | - Simon Bouffler
- Radiation Effects Department, Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Oxfordshire, UK
| | - Kathryn D Held
- National Council on Radiation Protection and Measurements, Bethesda, MD, USA
| | - Mark P Little
- Radiation Epidemiology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Roy E Shore
- Department of Population Health, New York University School of Medicine, New York, NY, USA
| | - Igor Shuryak
- Center for Radiological Research, Columbia University Irving Medical Center, New York, NY, USA
| | - Michael M Weil
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
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Brackmann LK, Poplawski A, Grandt CL, Schwarz H, Hankeln T, Rapp S, Zahnreich S, Galetzka D, Schmitt I, Grad C, Eckhard L, Mirsch J, Blettner M, Scholz-Kreisel P, Hess M, Binder H, Schmidberger H, Marron M. Comparison of time and dose dependent gene expression and affected pathways in primary human fibroblasts after exposure to ionizing radiation. Mol Med 2020; 26:85. [PMID: 32907548 DOI: 10.1186/s10020-020-00203-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 07/23/2020] [Indexed: 02/08/2023] Open
Abstract
Background Exposure to ionizing radiation induces complex stress responses in cells, which can lead to adverse health effects such as cancer. Although a variety of studies investigated gene expression and affected pathways in human fibroblasts after exposure to ionizing radiation, the understanding of underlying mechanisms and biological effects is still incomplete due to different experimental settings and small sample sizes. Therefore, this study aims to identify the time point with the highest number of differentially expressed genes and corresponding pathways in primary human fibroblasts after irradiation at two preselected time points. Methods Fibroblasts from skin biopsies of 15 cell donors were exposed to a high (2Gy) and a low (0.05Gy) dose of X-rays. RNA was extracted and sequenced 2 h and 4 h after exposure. Differentially expressed genes with an adjusted p-value < 0.05 were flagged and used for pathway analyses including prediction of upstream and downstream effects. Principal component analyses were used to examine the effect of two different sequencing runs on quality metrics and variation in expression and alignment and for explorative analysis of the radiation dose and time point of analysis. Results More genes were differentially expressed 4 h after exposure to low and high doses of radiation than after 2 h. In experiments with high dose irradiation and RNA sequencing after 4 h, inactivation of the FAT10 cancer signaling pathway and activation of gluconeogenesis I, glycolysis I, and prostanoid biosynthesis was observed taking p-value (< 0.05) and (in) activating z-score (≥2.00 or ≤ − 2.00) into account. Two hours after high dose irradiation, inactivation of small cell lung cancer signaling was observed. For low dose irradiation experiments, we did not detect any significant (p < 0.05 and z-score ≥ 2.00 or ≤ − 2.00) activated or inactivated pathways for both time points. Conclusions Compared to 2 h after irradiation, a higher number of differentially expressed genes were found 4 h after exposure to low and high dose ionizing radiation. Differences in gene expression were related to signal transduction pathways of the DNA damage response after 2 h and to metabolic pathways, that might implicate cellular senescence, after 4 h. The time point 4 h will be used to conduct further irradiation experiments in a larger sample.
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Duale N, Eide DM, Amberger ML, Graupner A, Brede DA, Olsen AK. Using prediction models to identify miRNA-based markers of low dose rate chronic stress. Sci Total Environ 2020; 717:137068. [PMID: 32062256 DOI: 10.1016/j.scitotenv.2020.137068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/13/2020] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
Robust biomarkers of exposure to chronic low dose stressors such as ionizing radiation, particularly following chronic low doses and dose-rates, are urgently needed. MicroRNAs (miRNA) have emerged as promising markers of exposure to high dose and dose-rate. Here, we evaluated the feasibility of classifying γ-radiation exposure at different dose rates based on miRNA expression levels. Our objective was to identify miRNA-signatures discriminating between exposure to γ-radiation or not, including exposure to chronic low dose rates. We exposed male CBA/CaOlaHsd and C57BL/6NHsd wild-type mice to 0, 2.5, 10 and 100 mGy/h γ-irradiation (3 Gy total-dose). From an initial screening of 576 miRNAs, a set of 21 signature-miRNAs was identified based on differential expression (>± 2-fold or p < 0.05). This 21-signature miRNA panel was investigated in 39 samples from 4/5 livers/group/mouse strain. A set of significantly differentially expressed miRNAs was identified in all γ-irradiated samples. Most miRNAs were upregulated in all γ-irradiated groups compared to control, and functional analysis of these miRNAs revealed involvement in several cancer-related signaling pathways. To identify miRNAs that distinguished exposed mice from controls, nine prediction methods; i.e., six variants of generalized regression models, random-forest, boosted-tree and nearest-shrunken-centroid (PAM) were used. The generalized regression methods seem to outperform the other prediction methods for classification of irradiated and control samples. Using the 21-miRNA panel in the prediction models, we identified sets of candidate miRNA-markers that predict exposure to γ-radiation. Among the top10 miRNA predictors, contributing most in each of the three γ-irradiated groups, three miRNA predictors (miR-140-3p, miR-133a-5p and miR-145a-5p) were common. Three miRNAs, miR-188-3p/26a-5p/26b-5p, were specific for lower dose-rate γ-radiation. Similarly, exposure to the high dose-rates was also correctly predicted, including mice exposed to X-rays. Our approach identifying miRNA-based signature panels may be extended to classify exposure to environmental, nutritional and life-style-related stressors, including chronic low-stress scenarios.
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Affiliation(s)
- Nur Duale
- Department of Environmental Health, Norwegian Institute of Public Health, Oslo, Norway; Centre of Excellence "Centre for Environmental Radiation" (CERAD), Norway.
| | - Dag M Eide
- Department of Environmental Health, Norwegian Institute of Public Health, Oslo, Norway; Centre of Excellence "Centre for Environmental Radiation" (CERAD), Norway
| | - Maria L Amberger
- Department of Environmental Health, Norwegian Institute of Public Health, Oslo, Norway; Centre of Excellence "Centre for Environmental Radiation" (CERAD), Norway
| | - Anne Graupner
- Department of Environmental Health, Norwegian Institute of Public Health, Oslo, Norway; Centre of Excellence "Centre for Environmental Radiation" (CERAD), Norway
| | - Dag A Brede
- Centre of Excellence "Centre for Environmental Radiation" (CERAD), Norway; Faculty of Environmental Sciences and Natural Resource Management (MINA), Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Ann K Olsen
- Department of Environmental Health, Norwegian Institute of Public Health, Oslo, Norway; Centre of Excellence "Centre for Environmental Radiation" (CERAD), Norway
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Abstract
BACKGROUND A large body of radiobiological data has been generated over the past century using in vitro, animal and epidemiological models. This information represents global efforts to understand the mechanistic basis of radiation-induced health effects. However, it has been difficult to effectively integrate this data to derive meaningful information for refining the guidance on chronic, low dose radiation exposure for workers and the public. METHODS To increase our understanding of radiation risks and the biological processes that contribute to those risks, a paradigm shift is needed that will enable integration of information across levels of biological organization from a 'stressor' centric to an 'adverse outcome' approach to risk assessment. In chemical and ecological toxicity, a framework has been developed that captures available biologically-based knowledge in the literature and links it to outcomes of relevance to chemical toxicity, resulting in an adverse outcome pathway (AOP). RESULTS In this paper, we discuss the AOP concept, how it can be applied to the radiation field, and our vision for the next steps. For the approach to be successful, the radiation research community will need to work collaboratively to vet the vast amount of literature and harness the data in a systematic manner for incorporation into a framework based on the AOP approach. CONCLUSION We anticipate that AOPs could be adopted as a method to synthesize current available information to facilitate the identification of knowledge gaps, better co-ordinate research and qualitatively and quantitatively link key events to an adverse outcome. This can further assist in identifying biomarkers relevant to radiation exposures, refining risk from co-exposures and understanding critical events at the molecular, cellular, tissue, organ and whole animal level related to low dose/dose-rate exposures.
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Affiliation(s)
- Vinita Chauhan
- Consumer and Clinical Radiation Protection Bureau, Health Canada, Ottawa, ON, Canada
| | | | - Donald Cool
- Electric Power Research Institute, Charlotte, NC, USA
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Bacon JD, Slade E, Smith AL, Allareddy G, Duan R, Fraser JF, Hatton KW. Potentially Harmful Ionizing Radiation Exposure from Diagnostic Tests and Medical Procedures in Patients with Aneurysmal Subarachnoid Hemorrhage. World Neurosurg 2020; 140:e153-e160. [PMID: 32387402 DOI: 10.1016/j.wneu.2020.04.203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Patients with aneurysmal subarachnoid hemorrhage (aSAH) may have significant potentially harmful ionizing radiation exposure (PHIRE) from diagnostic tests and medical procedures (DTMP) during their initial hospitalization. METHODS In this single-center, retrospective, observational study, we evaluated the incidence of PHIRE using all patients with radiographically proven aSAH who survived hospitalization over a 6-year period. Patient data were then used to fit a full logistic regression model, a reduced-variable logistic regression model with least absolute shrinkage and selection operator penalty, and a nonparametric tree-based model. Testing data were then used to calculate each predictive model's accuracy. RESULTS Of 192 patients included in this study, 69 (35.9%) met criteria for PHIRE. Patients with PHIRE were more likely to have a poor Hunt-Hess Score (40.6% vs. 12.2%, P < 0.0001), a poor modified Fischer Grading Scale score (30.4% vs. 16.3%, P = 0.03), ventriculostomy (91.3% vs. 47.2%, P < 0.0001), vasospasm (81.2% vs. 34.1%, P < 0.0001), and ventriculoperitoneal shunt (31.9% vs. 10.6%, P < 0.001). Parametric PHIRE prediction modeling with a full logistic regression model and reduced-logistic regression modeling with least absolute shrinkage and selection operator penalty demonstrated PHIRE prediction accuracy of 67% and 78% accuracy, respectively. Nonparametric tree-based PHIRE modeling demonstrated a prediction accuracy of 58%. CONCLUSIONS On the basis of our data, PHIRE occurs in approximately 35% of aSAH patients. The reduced-variable logistic regression model had the greatest predictive accuracy for PHIRE. Future studies should validate our findings and predictive models and, if our conclusions hold, further clarification of the risks of PHIRE and methods to reduce PHIRE should be investigated.
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Affiliation(s)
- J David Bacon
- Department of Anesthesiology, University of Kentucky, Lexington, Kentucky, USA
| | - Emily Slade
- Department of Biostatistics, University of Kentucky, Lexington, Kentucky, USA
| | - Austin L Smith
- University of Kentucky College of Medicine, Lexington, Kentucky, USA
| | - Greeshma Allareddy
- Department of Anesthesiology, University of Kentucky, Lexington, Kentucky, USA
| | - Ran Duan
- Department of Biostatistics, University of Kentucky, Lexington, Kentucky, USA
| | - Justin F Fraser
- Department of Neurological Surgery, Neurology, Radiology and Neuroscience, University of Kentucky, Lexington, Kentucky, USA
| | - Kevin W Hatton
- Department of Anesthesiology, University of Kentucky, Lexington, Kentucky, USA.
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Abstract
Purpose: The purpose of this manuscript is to evaluate the role of regulatory limits and regulatory action on the total impact of nuclear contamination and accidents. While it is important to protect the public from excessive radiation exposures it is also critical to weigh the damage done by implementing regulations against the benefits produced. Two cases: Actions taken as a result of radioactive fallout in Washington County, Utah in 1953 from the atomic bomb testing in Nevada, and the actions implemented post release of radioactive materials into the environment from the damaged nuclear power reactor at Fukushima, Japan, are compared.Materials and methods: The Washington County radiation exposures and doses, resulting from the Nevada nuclear weapons tests, were taken from published reports, papers, and historical records. The protective actions taken were reviewed and reported. Recent publications were used to define the doses following Fukushima. The impact and/or results of sheltering only versus sheltering/evacuation of Washington County and Fukushima are compared.Results: The radiation dose from the fallout in Washington County from the fallout was almost 2-3 three times the dose in Japan, but the regulatory actions were vastly different. In Utah, the minimal action taken, e.g. sheltering in place, had no major impact on the public health or on the economy. The actions in Fukushima resulted in major negative impact precipitated through the fear generated. And the evacuation. The results had adverse human health and wellness consequences and a serious impact on the economy of the Fukushima region, and all of Japan.Conclusions: When evacuation is being considered, great care must be taken when any regulatory actions are initiated based on radiation limits. It is necessary to consider total impact and optimize the actions to limit radiation exposure while minimizing the social, economic, and health impacts. Optimization can help ensure that the protective measures result in more good than harm. It seems clear that organizations who recommend radiation protection guidelines need to revisit the past and current guides in light of the significant Fukushima experience.
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Affiliation(s)
- Bruce W Church
- Environment, Safety, Health and Security, Nevada Operations Office, DOE, Hurricane, USA
| | - Antone L Brooks
- DOE Low Dose Radiation Research Program, Washington State University, Kennewick, WA, USA
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Mosayebi A, Malekie S, Rahimi A, Ziaie F. Experimental study on polystyrene-MWCNT nanocomposite as a radiation dosimeter. Radiat Phys Chem Oxf Engl 1993 2019; 164:108362. [DOI: 10.1016/j.radphyschem.2019.108362] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Nair S, Engelbrecht M, Miles X, Ndimba R, Fisher R, du Plessis P, Bolcaen J, Nieto-Camero J, de Kock E, Vandevoorde C. The Impact of Dose Rate on DNA Double-Strand Break Formation and Repair in Human Lymphocytes Exposed to Fast Neutron Irradiation. Int J Mol Sci 2019; 20:E5350. [PMID: 31661782 DOI: 10.3390/ijms20215350] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/16/2019] [Accepted: 10/19/2019] [Indexed: 12/12/2022] Open
Abstract
The lack of information on how biological systems respond to low-dose and low dose-rate exposures makes it difficult to accurately assess the carcinogenic risks. This is of critical importance to space radiation, which remains a serious concern for long-term manned space exploration. In this study, the γ-H2AX foci assay was used to follow DNA double-strand break (DSB) induction and repair following exposure to neutron irradiation, which is produced as secondary radiation in the space environment. Human lymphocytes were exposed to high dose-rate (HDR: 0.400 Gy/min) and low dose-rate (LDR: 0.015 Gy/min) p(66)/Be(40) neutrons. DNA DSB induction was investigated 30 min post exposure to neutron doses ranging from 0.125 to 2 Gy. Repair kinetics was studied at different time points after a 1 Gy neutron dose. Our results indicated that γ-H2AX foci formation was 40% higher at HDR exposure compared to LDR exposure. The maximum γ-H2AX foci levels decreased gradually to 1.65 ± 0.64 foci/cell (LDR) and 1.29 ± 0.45 (HDR) at 24 h postirradiation, remaining significantly higher than background levels. This illustrates a significant effect of dose rate on neutron-induced DNA damage. While no significant difference was observed in residual DNA damage after 24 h, the DSB repair half-life of LDR exposure was slower than that of HDR exposure. The results give a first indication that the dose rate should be taken into account for cancer risk estimations related to neutrons.
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Siegel JA, Brooks AL, Fisher DR, Zanzonico PB, Doss M, OʼConnor MK, Silberstein EB, Welsh JS, Greenspan BS. A Critical Assessment of the Linear No-Threshold Hypothesis: Its Validity and Applicability for Use in Risk Assessment and Radiation Protection. Clin Nucl Med 2019; 44:521-5. [PMID: 31107746 DOI: 10.1097/RLU.0000000000002613] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The Society of Nuclear Medicine and Molecular Imaging convened a task group to examine the evidence for the risk of carcinogenesis from low-dose radiation exposure and to assess evidence in the scientific literature related to the overall validity of the linear no-threshold (LNT) hypothesis and its applicability for use in risk assessment and radiation protection. In the low-dose and dose-rate region, the group concluded that the LNT hypothesis is invalid as it is not supported by the available scientific evidence and, instead, is actually refuted by published epidemiology and radiation biology. The task group concluded that the evidence does not support the use of LNT either for risk assessment or radiation protection in the low-dose and dose-rate region.
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Yamauchi K, Ono T, Ayabe Y, Hisamatsu S, Yoneya M, Tsutsumi Y, Komura JI. Life-Shortening Effect of Chronic Low-Dose-Rate Irradiation in Calorie-Restricted Mice. Radiat Res 2019; 192:451-455. [PMID: 31390311 DOI: 10.1667/rr15385.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Calorie restriction is known to influence several physiological processes and to alleviate the late effects of radiation exposure such as neoplasm induction and life shortening. However, earlier related studies were limited to acute radiation exposure. Therefore, in this study we examined the influence of chronic low-dose-rate irradiation on lifespan. Young male B6C3F1/Jcl mice were divided randomly into two groups, which were fed either a low-calorie (65 kcal/ week) or high-calorie (95 kcal/week) diet. The latter is comparable to ad libitum feeding. The animals in the irradiated group were continuously exposed to gamma rays for 400 days at 20 mGy/day, resulting in a total dose of 8 Gy. Exposure and calorie restriction were initiated at 8 weeks of age and the diets were maintained for life. The life-shortening effects from chronic whole-body irradiation were compared between the groups. Body weights were reduced in calorie-restricted mice irrespective of radiation treatment. Radiation induced a shortened median lifespan in both groups, but to a greater extent in the calorie-restricted mice. These results suggest that calorie restriction may sensitize mice to chronic low-dose-rate radiation exposure to produce a life-shortening effect rather than alleviating the effects of radiation.
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Affiliation(s)
| | | | - Yoshiko Ayabe
- Departments of Radioecology, Institute for Environmental Sciences, Rokkasho, Kamikita, Aomori, Japan
| | - Shun'ichi Hisamatsu
- Departments of Radioecology, Institute for Environmental Sciences, Rokkasho, Kamikita, Aomori, Japan
| | | | - Yuki Tsutsumi
- Departments of Tohoku Environmental Science Service Corporation, 330-2, Noduki, Obuchi, Rokkasho, Kamikita, Aomori, Japan
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Jiménez E, Pimentel E, Cruces MP, Amaya-Chavez A. Relationship between viability and genotoxic effect of gamma rays delivered at different dose rates in somatic cells of Drosophila melanogaster. J Toxicol Environ Health A 2019; 82:741-751. [PMID: 31354077 DOI: 10.1080/15287394.2019.1646681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The role of dose rate (DR) on biological effects of ionizing radiation is an area of significant research focus and relevant to environmental exposures. The present investigation was aimed to examine the direct relationship between viability and genotoxicity in Drosophila melanogaster, induced by gamma rays in a range of doses from 2 to 35 Gy administered at three different DR. Results indicated that larval-adult viability was reduced in relation to dose but not DR. No marked differences were found in the LD50 produced by differing DR tested. Frequencies of somatic mutation and recombination increased in direct correlation with dose and DR. Data demonstrate the importance of determination of the relationship between viability and genotoxicity induced by DR in in vivo systems for toxicological and radioprotection studies.
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Affiliation(s)
- Elizabeth Jiménez
- Departamento de Biología, Instituto Nacional de Investigaciones Nucleares , Ocoyoacac , México
| | - Emilio Pimentel
- Departamento de Biología, Instituto Nacional de Investigaciones Nucleares , Ocoyoacac , México
| | - Martha P Cruces
- Departamento de Biología, Instituto Nacional de Investigaciones Nucleares , Ocoyoacac , México
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Berthel E, Foray N, Ferlazzo ML. The Nucleoshuttling of the ATM Protein: A Unified Model to Describe the Individual Response to High- and Low-Dose of Radiation? Cancers (Basel) 2019; 11:cancers11070905. [PMID: 31261657 PMCID: PMC6678722 DOI: 10.3390/cancers11070905] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/22/2019] [Accepted: 06/25/2019] [Indexed: 11/24/2022] Open
Abstract
The evaluation of radiation-induced (RI) risks is of medical, scientific, and societal interest. However, despite considerable efforts, there is neither consensual mechanistic models nor predictive assays for describing the three major RI effects, namely radiosensitivity, radiosusceptibility, and radiodegeneration. Interestingly, the ataxia telangiectasia mutated (ATM) protein is a major stress response factor involved in the DNA repair and signaling that appears upstream most of pathways involved in the three precited RI effects. The rate of the RI ATM nucleoshuttling (RIANS) was shown to be a good predictor of radiosensitivity. In the frame of the RIANS model, irradiation triggers the monomerization of cytoplasmic ATM dimers, which allows ATM monomers to diffuse in nucleus. The nuclear ATM monomers phosphorylate the H2AX histones, which triggers the recognition of DNA double-strand breaks and their repair. The RIANS model has made it possible to define three subgroups of radiosensitivity and provided a relevant explanation for the radiosensitivity observed in syndromes caused by mutated cytoplasmic proteins. Interestingly, hyper-radiosensitivity to a low dose and adaptive response phenomena may be also explained by the RIANS model. In this review, the relevance of the RIANS model to describe several features of the individual response to radiation was discussed.
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Affiliation(s)
- Elise Berthel
- Institut National de la Santé et de la Recherche Médicale, UA8, Radiations: Defense, Health and Environment, Centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France
| | - Nicolas Foray
- Institut National de la Santé et de la Recherche Médicale, UA8, Radiations: Defense, Health and Environment, Centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France.
| | - Mélanie L Ferlazzo
- Institut National de la Santé et de la Recherche Médicale, UA8, Radiations: Defense, Health and Environment, Centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France
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Firouzi M, Housaindokht MR, Izadi-najafabadi R, Moosavi F. Effect of low dose gamma ray on the plasmonic behavior of gold nanoparticle. Radiat Phys Chem Oxf Engl 1993 2019; 159:190-4. [DOI: 10.1016/j.radphyschem.2019.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ulyanenko S, Pustovalova M, Koryakin S, Beketov E, Lychagin A, Ulyanenko L, Kaprin A, Grekhova A, M Ozerova A, V Ozerov I, Vorobyeva N, Shegay P, Ivanov S, Leonov S, Klokov D, Osipov AN. Formation of γH2AX and pATM Foci in Human Mesenchymal Stem Cells Exposed to Low Dose-Rate Gamma-Radiation. Int J Mol Sci 2019; 20:E2645. [PMID: 31146367 PMCID: PMC6600277 DOI: 10.3390/ijms20112645] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/21/2019] [Accepted: 05/23/2019] [Indexed: 12/12/2022] Open
Abstract
DNA double-strand breaks (DSB) are among the most harmful DNA lesions induced by ionizing radiation (IR). Although the induction and repair of radiation-induced DSB is well studied for acute irradiation, responses to DSB produced by chronic IR exposures are poorly understood, especially in human stem cells. The aim of this study was to examine the formation of DSB markers (γH2AX and phosphorylated kinase ATM, pATM, foci) in human mesenchymal stem cells (MSCs) exposed to chronic gamma-radiation (0.1 mGy/min) in comparison with acute irradiation (30 mGy/min) at cumulative doses of 30, 100, 160, 240 and 300 mGy. A linear dose-dependent increase in the number of both γH2AX and pATM foci, as well as co-localized γH2AX/pATM foci ("true" DSB), were observed after an acute radiation exposure. In contrast, the response of MSCs to a chronic low dose-rate IR exposure deviated from linearity towards a threshold model, for γH2AX, pATM foci and γH2AX/pATM foci, with an indication of a "plateau". The state of equilibrium between newly formed DSB at a low rate during the protracted exposure time and the elimination of a fraction of DSB is proposed as a mechanistic explanation of the non-linear DSB responses following a low dose-rate irradiation. This notion is supported by the observation of the elimination of a substantial fraction of DSB 6 h after the cessation of the exposures. Our results demonstrate non-linear dose responses for γH2AX and pATM foci in human MSCs exposed to low dose-rate IR and showed the existence of a threshold, which may have implications for radiation protection in humans.
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Affiliation(s)
- Stepan Ulyanenko
- A. Tsyb Medical Radiological Research Centre-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
| | - Margarita Pustovalova
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow 123098, Russia.
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow 119991, Russia.
- Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russia.
| | - Sergey Koryakin
- A. Tsyb Medical Radiological Research Centre-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
| | - Evgenii Beketov
- A. Tsyb Medical Radiological Research Centre-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
| | - Anatolii Lychagin
- A. Tsyb Medical Radiological Research Centre-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
| | - Liliya Ulyanenko
- A. Tsyb Medical Radiological Research Centre-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
| | - Andrey Kaprin
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Moscow 125284, Russia.
| | - Anna Grekhova
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow 123098, Russia.
- Emanuel Institute for Biochemical Physics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Alexandra M Ozerova
- Faculty of Biology, Lomonosov Moscow State University, GSP-1, Leninskie Gory, Moscow 119991, Russia.
| | - Ivan V Ozerov
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow 123098, Russia.
| | - Natalia Vorobyeva
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow 123098, Russia.
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow 119991, Russia.
| | - Peter Shegay
- Center for Innovative Radiological and Regenerative Technologies of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
| | - Sergey Ivanov
- A. Tsyb Medical Radiological Research Centre-Branch of the National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
| | - Sergey Leonov
- Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russia.
- Institute of Cell Biophysics, Russian Academy of Sciences, Institutskaya St., 3, Pushchino 142290, Russia.
| | - Dmitry Klokov
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
| | - Andreyan N Osipov
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, Moscow 123098, Russia.
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow 119991, Russia.
- Moscow Institute of Physics and Technology, Dolgoprudny 141700, Russia.
- Center for Innovative Radiological and Regenerative Technologies of the Ministry of Health of the Russian Federation, Koroleva 4, Obninsk 249030, Russia.
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Zarnke AM, Tharmalingam S, Boreham DR, Brooks AL. BEIR VI radon: The rest of the story. Chem Biol Interact 2019; 301:81-87. [DOI: 10.1016/j.cbi.2018.11.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/19/2018] [Accepted: 11/22/2018] [Indexed: 12/13/2022]
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Park J, Kwon T, Lee SS, Jin YW, Seong KM. Mapping the research trends on the biological effects of radiation less than 100 mSv: a bibliometric analysis for 30 years publication. Int J Radiat Biol 2019; 95:527-536. [DOI: 10.1080/09553002.2019.1552373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jina Park
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - TaeWoo Kwon
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Seung-Sook Lee
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
- Department of Pathology, Korea Cancer Center Hospital, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Young Woo Jin
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Ki Moon Seong
- Laboratory of Low Dose Risk Assessment, National Radiation Emergency Medical Center, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
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48
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Brooks AL. The impact of dose rate on the linear no threshold hypothesis. Chem Biol Interact 2019; 301:68-80. [PMID: 30763551 DOI: 10.1016/j.cbi.2018.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/17/2018] [Accepted: 12/11/2018] [Indexed: 12/13/2022]
Abstract
The goal of this manuscript is to define the role of dose rate and dose protraction on the induction of biological changes at all levels of biological organization. Both total dose and the time frame over which it is delivered are important as the body has great capacity to repair all types of biological damage. The importance of dose rate has been recognized almost from the time that radiation was discovered and has been included in radiation standards as a Dose, Dose Rate, Effectiveness Factor (DDREF) and a Dose Rate Effectiveness Factor (DREF). This manuscript will evaluate the role of dose rate at the molecular, cellular, tissue, experimental animals and humans to demonstrate that dose rate is an important variable in estimating radiation cancer risk and other biological effects. The impact of low-dose rates on the Linear-No-Threshold Hypothesis (LNTH) will be reviewed since if the LNTH is not valid it is not possible to calculate a single value for a DDREF or DREF. Finally, extensive human experience is briefly reviewed to show that the radiation risks are not underestimated and that radiation at environmental levels has limited impact on total human cancer risk.
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Affiliation(s)
- Antone L Brooks
- Environmental Science, Washington State University, Richland, WA, USA.
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Tharmalingam S, Sreetharan S, Brooks AL, Boreham DR. Re-evaluation of the linear no-threshold (LNT) model using new paradigms and modern molecular studies. Chem Biol Interact 2019; 301:54-67. [PMID: 30763548 DOI: 10.1016/j.cbi.2018.11.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/13/2018] [Accepted: 11/22/2018] [Indexed: 02/06/2023]
Abstract
The linear no-threshold (LNT) model is currently used to estimate low dose radiation (LDR) induced health risks. This model lacks safety thresholds and postulates that health risks caused by ionizing radiation is directly proportional to dose. Therefore even the smallest radiation dose has the potential to cause an increase in cancer risk. Advances in LDR biology and cell molecular techniques demonstrate that the LNT model does not appropriately reflect the biology or the health effects at the low dose range. The main pitfall of the LNT model is due to the extrapolation of mutation and DNA damage studies that were conducted at high radiation doses delivered at a high dose-rate. These studies formed the basis of several outdated paradigms that are either incorrect or do not hold for LDR doses. Thus, the goal of this review is to summarize the modern cellular and molecular literature in LDR biology and provide new paradigms that better represent the biological effects in the low dose range. We demonstrate that LDR activates a variety of cellular defense mechanisms including DNA repair systems, programmed cell death (apoptosis), cell cycle arrest, senescence, adaptive memory, bystander effects, epigenetics, immune stimulation, and tumor suppression. The evidence presented in this review reveals that there are minimal health risks (cancer) with LDR exposure, and that a dose higher than some threshold value is necessary to achieve the harmful effects classically observed with high doses of radiation. Knowledge gained from this review can help the radiation protection community in making informed decisions regarding radiation policy and limits.
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Affiliation(s)
- Sujeenthar Tharmalingam
- Northern Ontario School of Medicine, Laurentian University, 935 Ramsey Lake Rd, Sudbury, ON, P3E 2C6, Canada.
| | - Shayenthiran Sreetharan
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, 1280 Main Street W, Hamilton ON, L8S 4K1, Canada
| | - Antone L Brooks
- Environmental Science, Washington State University, Richland, WA, USA
| | - Douglas R Boreham
- Northern Ontario School of Medicine, Laurentian University, 935 Ramsey Lake Rd, Sudbury, ON, P3E 2C6, Canada; Bruce Power, Tiverton, ON(3), UK.
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Abstract
OBJECTIVE Patient shielding is standard practice in diagnostic imaging, despite growing evidence that it provides negligible or no benefit and carries a substantial risk of increasing patient dose and compromising the diagnostic efficacy of an image. The historical rationale for patient shielding is described, and the folly of its continued use is discussed. CONCLUSION Although change is difficult, it is incumbent on radiologic technologists, medical physicists, and radiologists to abandon the practice of patient shielding in radiology.
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