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Satoh K, Takeda K, Nagafune I, Chik WDW, Ohkama-Otsu N, Okazaki S, Yokoyama T, Hase Y. Isolation and Characterization of High-Temperature-Tolerant Mutants of Bradyrhizobium diazoefficiens USDA110 by Carbon-Ion Beam Irradiation. Microorganisms 2024; 12:1819. [PMID: 39338493 PMCID: PMC11434629 DOI: 10.3390/microorganisms12091819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 08/29/2024] [Accepted: 08/31/2024] [Indexed: 09/30/2024] Open
Abstract
Biofertilizers are promising technologies for achieving sustainable agriculture. However, high-temperature tolerance is a constraint that limits the function of microbial inoculants. To characterize the genetic changes responsible for the high-temperature tolerance of rhizobia, mutant screening was performed using Bradyrhizobium diazoefficiens USDA110. The wild-type cells were mutagenized with carbon-ion irradiation, and two mutant strains, designated M10 and M14, were obtained after a three-day heat-shock treatment at 43 °C. In particular, M14 showed superior growth at 36 °C, at which temperature growth of the wild type was extremely slow, whereas M14 grew more slowly than the wild type at 32 °C. Whole-genome sequencing revealed that M10 had seven point mutations, whereas M14 had eight point mutations together with a 1.27 Mb inversion. RNA sequencing showed that the number of differentially expressed genes greatly exceeded the actual number of induced mutations. In M14, a gene cluster associated with pyruvate metabolism was markedly downregulated, probably because of disjunction with the promoter region after inversion, and was considered to be the cause of the slow growth rate of M14 at 32 °C. Notably, transmembrane proteins, including porins, were enriched among the genes upregulated in both M10 and M14. M14 was confirmed to retain symbiotic functions with soybeans. These results indicate that high-temperature tolerance was conferred by random mutagenesis while the symbiotic functions of rhizobia was maintained.
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Affiliation(s)
- Katsuya Satoh
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan; (K.S.); (I.N.); (W.D.W.C.)
| | - Kiyoko Takeda
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu 183-8509, Tokyo, Japan; (K.T.); (N.O.-O.); (S.O.); (T.Y.)
| | - Ikuko Nagafune
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan; (K.S.); (I.N.); (W.D.W.C.)
| | - Wan Dalila Wan Chik
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan; (K.S.); (I.N.); (W.D.W.C.)
- Agrotechnology & Bioscience, Malaysian Nuclear Agency, Kajang 43000, Selangor, Malaysia
| | - Naoko Ohkama-Otsu
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu 183-8509, Tokyo, Japan; (K.T.); (N.O.-O.); (S.O.); (T.Y.)
| | - Shin Okazaki
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu 183-8509, Tokyo, Japan; (K.T.); (N.O.-O.); (S.O.); (T.Y.)
| | - Tadashi Yokoyama
- Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu 183-8509, Tokyo, Japan; (K.T.); (N.O.-O.); (S.O.); (T.Y.)
| | - Yoshihiro Hase
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), 1233 Watanuki-machi, Takasaki 370-1292, Gunma, Japan; (K.S.); (I.N.); (W.D.W.C.)
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2
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Hu Z, Deng ZY, Feng HJ. Effects of BPQ binding on the nonadiabatic dynamics of excited electrons in poly(dG)-poly(dC) DNA under proton irradiation. Phys Chem Chem Phys 2024. [PMID: 39192749 DOI: 10.1039/d4cp01917b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
The interaction between DNA and small molecules is important for understanding the mechanisms of DNA-based multifunctional devices and has been extensively studied. However, there are few reports on such interactions in irradiation environments. Here, we investigate the nonadiabatic dynamic behaviors of excited electrons in double-stranded DNA bound to BPQ molecule upon proton irradiation, focusing on the energy deposition and electronic excitation dynamics as protons traverse the DNA along different channels. Our results reveal that the presence of BPQ significantly influences charge migration and DNA damage, with notable differences between CGvdW and CGcovalent adducts. The energy deposition process is highly dependent on charge density, and guanine exhibits higher excitation propensity than cytosine due to its structural characteristics. The BPQ molecule enhances DNA charge migration and promotes damage through secondary electron migration. These findings provide insights into the nonadiabatic dynamics of DNA under ionizing radiation and have implications for designing targeted electrophilic organics to improve radiotherapy efficacy.
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Affiliation(s)
- Zhihua Hu
- School of Physics, Northwest University, Xi'an 710127, China.
| | - Zun-Yi Deng
- School of Physics, Northwest University, Xi'an 710127, China.
| | - Hong-Jian Feng
- School of Physics, Northwest University, Xi'an 710127, China.
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3
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Shang Y, Cui P, Chen Y, Zhang Z, Li S, Chen Z, Ma A, Jia Y. Study on the mechanism of mitigating radiation damage by improving the hematopoietic system and intestinal barrier with Tenebrio molitor peptides. Food Funct 2024; 15:8116-8127. [PMID: 39011610 DOI: 10.1039/d4fo01141d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Research on plant and animal peptides has garnered significant attention, but there is a lack of studies on the functional properties of Tenebrio molitor peptides, particularly in relation to their potential mitigating effect on radiation damage and the underlying mechanisms. This study aims to explore the protective effects of Tenebrio molitor peptides against radiation-induced damage. Mice were divided into five groups: normal, radiation model, and low-, medium-, and high-dose Tenebrio molitor peptide (TMP) groups (0.15 g per kg BW, 0.30 g per kg BW, and 0.60 g per kg BW). Various parameters such as blood cell counts, bone marrow DNA content, immune organ indices, serum levels of D-lactic acid, diamine oxidase (DAO), endotoxin (LPS), and inflammatory factors were assessed at 3 and 15 days post gamma irradiation. Additionally, the intestinal tissue morphology was examined through H&E staining, RT-qPCR experiments were conducted to analyze the expression of inflammatory factors in the intestine, and immunohistochemistry was utilized to evaluate the expression of tight junction proteins ZO-1 and Occludin in the intestine. The findings revealed that high-dose TMP significantly enhanced the hematopoietic system function in mice post radiation exposure, leading to increased spleen index, thymus index, blood cell counts, and bone marrow DNA production (p < 0.05). Moreover, TMP improved the intestinal barrier integrity and reduced the intestinal permeability. Mechanistic insights suggested that these peptides may safeguard intestinal barrier function by downregulating the gene expression of inflammatory factors TNF-α, IL-1β, and IL-6, while upregulating the expression of tight junction proteins ZO-1 and Occludin (p < 0.05). Overall, supplementation with TMP mitigates radiation-induced intestinal damage by enhancing the hematopoietic system and the intestinal barrier, offering valuable insights for further investigations into the mechanisms underlying the protective effects of these peptides against ionizing radiation.
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Affiliation(s)
- Yuting Shang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Pengfei Cui
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Yachun Chen
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Ziqi Zhang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Siting Li
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Zhou Chen
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Aijin Ma
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
| | - Yingmin Jia
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, PR China.
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4
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Tornyi I, Árkosy P, Horváth I, Furka A. A new perspective on the proper timing of radiotherapy during CDK4/6 inhibitor therapy in patients with "bone-only" metastatic breast cancer. Pathol Oncol Res 2023; 29:1611369. [PMID: 37886029 PMCID: PMC10598277 DOI: 10.3389/pore.2023.1611369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023]
Abstract
The vast majority of hormone positive and HER2 negative advanced breast cancers can be controlled well by endocrine therapy combined with the groundbreaking use of CDK4/6 inhibitors in the metastatic first-line setting. Approximately 50%-60% of these patients have "bone-only" metastatic disease. In oligometastatic cases or if a certain number of uncontrolled lesions develop during the aforementioned therapy, ablative radiotherapy can be delivered or, in symptomatic cases, urgent irradiation is needed with palliative intent. To achieve the most effective results, parallel with good quality of life, the timing of radiotherapy must be determined precisely, taking into account that different cell cycles are involved during different treatment modalities; therefore, optimization of treatment schedules ensures longer and safer post-progression overall survival. The key question is whether the two treatment modalities are safe concurrently or whether they should be administered separately, and if so, what is the optimal sequence and why? This manuscript aims to answer this important question, with a focus on quality of life. Existing publications focus on safety and toxicity profiles, and efficacy is detailed only tangentially and minimally.
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Affiliation(s)
- Ilona Tornyi
- Department of Pulmonology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Peter Árkosy
- Department of Oncology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Ildikó Horváth
- Department of Pulmonology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Andrea Furka
- Department of Oncology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- Department of Clinical Radiology, Faculty of Health Care, Institute of Practical Methodology and Diagnostics, University of Miskolc, Miskolc, Hungary
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5
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Hase Y, Satoh K, Kitamura S. Comparative analysis of seed and seedling irradiation with gamma rays and carbon ions for mutation induction in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2023; 14:1149083. [PMID: 37089645 PMCID: PMC10117944 DOI: 10.3389/fpls.2023.1149083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
The molecular nature of mutations induced by ionizing radiation and chemical mutagens in plants is becoming clearer owing to the availability of high-throughput DNA sequencing technology. However, few studies have compared the induced mutations between different radiation qualities and between different irradiated materials with the same analysis method. To compare mutation induction between dry-seeds and seedlings irradiated with carbon ions and gamma rays in Arabidopsis, in this study we detected the mutations induced by seedling irradiation with gamma rays and analyzed the data together with data previously obtained for the other irradiation treatments. Mutation frequency at the equivalent dose for survival reduction was higher with gamma rays than with carbon ions, and was higher with dry-seed irradiation than with seedling irradiation. Carbon ions induced a higher frequency of deletions (2-99 bp) than gamma rays in the case of dry-seed irradiation, but this difference was less evident in the case of seedling irradiation. This result supported the inference that dry-seed irradiation under a lower water content more clearly reflects the difference in radiation quality. However, the ratio of rearrangements (inversions, translocations, and deletions larger than 100 bp), which are considered to be derived from the rejoining of two distantly located DNA breaks, was significantly higher with carbon ions than gamma rays irrespective of the irradiated material. This finding suggested that high-linear energy transfer radiation induced closely located DNA damage, irrespective of the water content of the material, that could lead to the generation of rearrangements. Taken together, the results provide an overall picture of radiation-induced mutation in Arabidopsis and will be useful for selection of a suitable radiation treatment for mutagenesis.
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Ji HJ, Jang AY, Song JY, Ahn KB, Han SH, Bang SJ, Jung HK, Hur J, Seo HS. Development of Live Attenuated Salmonella Typhimurium Vaccine Strain Using Radiation Mutation Enhancement Technology (R-MET). Front Immunol 2022; 13:931052. [PMID: 35898510 PMCID: PMC9310569 DOI: 10.3389/fimmu.2022.931052] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/10/2022] [Indexed: 11/13/2022] Open
Abstract
Salmonella enterica is a leading cause of food-borne diseases in humans worldwide, resulting in severe morbidity and mortality. They are carried asymptomatically in the intestine or gallbladder of livestock, and are transmitted predominantly from animals to humans via the fecal-oral route. Thus, the best preventive strategy is to preemptively prevent transmission to humans by vaccinating livestock. Live attenuated vaccines have been mostly favored because they elicit both cellular and humoral immunity and provide long-term protective immunity. However, developing these vaccines is a laborious and time-consuming process. Therefore, most live attenuated vaccines have been mainly used for phenotypic screening using the auxotrophic replica plate method, and new types of vaccines have not been sufficiently explored. In this study, we used Radiation-Mutation Enhancement Technology (R-MET) to introduce a wide variety of mutations and attenuate the virulence of Salmonella spp. to develop live vaccine strains. The Salmonella Typhimurium, ST454 strain (ST WT) was irradiated with Cobalt60 gamma-irradiator at 1.5 kGy for 1 h to maximize the mutation rate, and attenuated daughter colonies were screened using in vitro macrophage replication capacity and in vivo mouse infection assays. Among 30 candidates, ATOMSal-L6, with 9,961-fold lower virulence than the parent strain (ST454) in the mouse LD50 model, was chosen. This vaccine candidate was mutated at 71 sites, and in particular, lost one bacteriophage. As a vaccine, ATOMSal-L6 induced a Salmonella-specific IgG response to provide effective protective immunity upon intramuscular vaccination of mice. Furthermore, when mice and sows were orally immunized with ATOMSal-L6, we found a strong protective immune response, including multifunctional cellular immunity. These results indicate that ATOMSal-L6 is the first live vaccine candidate to be developed using R-MET, to the best of our knowledge. R-MET can be used as a fast and effective live vaccine development technology that can be used to develop vaccine strains against emerging or serotype-shifting pathogens.
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Affiliation(s)
- Hyun Jung Ji
- Research Division for Radiation Science, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Oral Microbiology and Immunology, and Dental Research Institute (DRI), School of Dentistry, Seoul National University, Seoul, South Korea
| | - A-Yeung Jang
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Joon Young Song
- Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Ki Bum Ahn
- Research Division for Radiation Science, Korea Atomic Energy Research Institute, Jeongeup, South Korea
| | - Seung Hyun Han
- Department of Oral Microbiology and Immunology, and Dental Research Institute (DRI), School of Dentistry, Seoul National University, Seoul, South Korea
| | - Seok Jin Bang
- Research and Development Center, HONGCHEON CTCVAC Co., Ltd., Hongcheon, South Korea
| | - Ho Kyoung Jung
- Research and Development Center, HONGCHEON CTCVAC Co., Ltd., Hongcheon, South Korea
| | - Jin Hur
- Department of Veterinary Public Health, College of Veterinary Medicine, Jeonbuk National University, Iksan, South Korea
- *Correspondence: Jin Hur, ; Ho Seong Seo,
| | - Ho Seong Seo
- Research Division for Radiation Science, Korea Atomic Energy Research Institute, Jeongeup, South Korea
- Department of Radiation Science, University of Science and Technology, Daejeon, South Korea
- *Correspondence: Jin Hur, ; Ho Seong Seo,
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7
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Tuieng RJ, Cartmell SH, Kirwan CC, Sherratt MJ. The Effects of Ionising and Non-Ionising Electromagnetic Radiation on Extracellular Matrix Proteins. Cells 2021; 10:3041. [PMID: 34831262 PMCID: PMC8616186 DOI: 10.3390/cells10113041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/28/2021] [Accepted: 10/30/2021] [Indexed: 02/07/2023] Open
Abstract
Exposure to sub-lethal doses of ionising and non-ionising electromagnetic radiation can impact human health and well-being as a consequence of, for example, the side effects of radiotherapy (therapeutic X-ray exposure) and accelerated skin ageing (chronic exposure to ultraviolet radiation: UVR). Whilst attention has focused primarily on the interaction of electromagnetic radiation with cells and cellular components, radiation-induced damage to long-lived extracellular matrix (ECM) proteins has the potential to profoundly affect tissue structure, composition and function. This review focuses on the current understanding of the biological effects of ionising and non-ionising radiation on the ECM of breast stroma and skin dermis, respectively. Although there is some experimental evidence for radiation-induced damage to ECM proteins, compared with the well-characterised impact of radiation exposure on cell biology, the structural, functional, and ultimately clinical consequences of ECM irradiation remain poorly defined.
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Affiliation(s)
- Ren Jie Tuieng
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK;
| | - Sarah H. Cartmell
- Department of Materials, School of Natural Sciences, Faculty of Science and Engineering and The Henry Royce Institute, Royce Hub Building, University of Manchester, Manchester M13 9PL, UK;
| | - Cliona C. Kirwan
- Division of Cancer Sciences and Manchester Breast Centre, Oglesby Cancer Research Building, Manchester Cancer Research Centre, School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M20 4BX, UK;
| | - Michael J. Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine and Manchester Breast Centre, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
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8
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Bertolet A, Ramos-Méndez J, Paganetti H, Schuemann J. The relation between microdosimetry and induction of direct damage to DNA by alpha particles. Phys Med Biol 2021; 66. [PMID: 34280910 DOI: 10.1088/1361-6560/ac15a5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 07/19/2021] [Indexed: 11/12/2022]
Abstract
In radiopharmaceutical treatmentsα-particles are employed to treat tumor cells. However, the mechanism that drives the biological effect induced is not well known. Being ionizing radiation,α-particles can affect biological organisms by producing damage to the DNA, either directly or indirectly. Following the principle that microdosimetry theory accounts for the stochastic way in which radiation deposits energy in sub-cellular sized volumes via physical collisions, we postulate that microdosimetry represents a reasonable framework to characterize the statistical nature of direct damage induction byα-particles to DNA. We used the TOPAS-nBio Monte Carlo package to simulate direct damage produced by monoenergetic alpha particles to different DNA structures. In separate simulations, we obtained the frequency-mean lineal energy (yF) and dose-mean lineal energy (yD) of microdosimetric distributions sampled with spherical sites of different sizes. The total number of DNA strand breaks, double strand breaks (DSBs) and complex strand breaks per track were quantified and presented as a function of eitheryForyD.The probability of interaction between a track and the DNA depends on how the base pairs are compacted. To characterize this variability on compactness, spherical sites of different size were used to match these probabilities of interaction, correlating the size-dependent specific energy (z) with the damage induced. The total number of DNA strand breaks per track was found to linearly correlate withyFandzFwhen using what we defined an effective volume as microdosimetric site, while the yield of DSB per unit dose linearly correlated withyDorzD,being larger for compacted than for unfolded DNA structures. The yield of complex breaks per unit dose exhibited a quadratic behavior with respect toyDand a greater difference among DNA compactness levels. Microdosimetric quantities correlate with the direct damage imparted on DNA.
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Affiliation(s)
- Alejandro Bertolet
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, United States of America
| | - José Ramos-Méndez
- Department of Radiation Oncology, University of California San Francisco, United States of America
| | - Harald Paganetti
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, United States of America
| | - Jan Schuemann
- Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, United States of America
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9
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Roman M, Wrobel TP, Panek A, Paluszkiewicz C, Kwiatek WM. Exploring subcellular responses of prostate cancer cells to clinical doses of X-rays by Raman microspectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 255:119653. [PMID: 33773429 DOI: 10.1016/j.saa.2021.119653] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/16/2021] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Modern techniques of radiotherapy such as fractioned radiotherapy require applications of low doses of ionizing radiation (up to 10 Gy) for effective patient treatment. It is, therefore, crucial to understand the response mechanisms in cancer cells irradiated with low (clinical) doses. The cell's response to irradiation depends on a dose and post-irradiation time. Both factors should be considered when studying the influence of ionizing radiation on cancer cells. Thus, in the present study, PC-3 prostate cancer cells were irradiated with clinical doses of X-rays to determine dose- and time-dependent response to the irradiation. Raman spectroscopy and biological methods (MTT and comet assays) were applied for the analysis of biochemical changes in the cells induced by low doses of X-ray irradiation at 0 h and 24 h post-irradiation timepoints. Due to a limited view of the biochemical changes at the subcellular level given by single spectrum Raman measurements, Raman mapping of the whole cell area was performed. The results were compared with those obtained for cell irradiation with high doses. The analysis was based on the Partial Least Squares Regression (PLSR) method for the cytoplasmic and nuclear regions separately. Additionally, for the first time, irradiation classification was performed to confirm Raman spectroscopy as a powerful tool for studies on cancer cells treated with clinical doses of ionizing radiation.
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Affiliation(s)
- Maciej Roman
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland.
| | - Tomasz P Wrobel
- Solaris National Synchrotron Radiation Centre, Jagiellonian University, Czerwone Maki 98, 30-392, Krakow, Poland
| | - Agnieszka Panek
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland
| | - Czeslawa Paluszkiewicz
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland
| | - Wojciech M Kwiatek
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland
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10
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Ahmadi Ganjeh Z, Eslami-Kalantari M, Ebrahimi Loushab M, Mowlavi AA. Calculation of direct DNA damages by a new approach for carbon ions and protons using Geant4-DNA. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2020.109249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Roman M, Wrobel TP, Panek A, Paluszkiewicz C, Kwiatek WM. Physicochemical damage and early-stage biological response to X-ray radiation studied in prostate cancer cells by Raman spectroscopy. JOURNAL OF BIOPHOTONICS 2020; 13:e202000252. [PMID: 32844593 DOI: 10.1002/jbio.202000252] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/04/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
Exposure to ionizing radiation significantly affects biochemistry of cancer cells. The effect of irradiation can be divided into two stages, that is, the physicochemical stage and the biological response. Both effects induce different biochemical changes in the cells and should be analyzed as two separate phenomena. Thus, in the current study, Raman spectroscopy of prostate cancer cells fixed before (the physicochemical damage model) and just after (the biological response model) irradiation was undertaken to compare biochemical composition of irradiated cancer cells at both stages. Spectroscopic analysis of the cells was performed separately for cytoplasmic and nuclear regions. Biochemical changes of irradiated cells were analyzed using partial least squares regression (PLSR) method on the basis of the collected Raman spectra. Regression coefficients were therefore used to describe differences and similarities between biochemical composition of cancer cells undergoing the physicochemical stage and biological response. Additionally, PLSR models of both phenomena were compared for linear dose-dependence and a cross prediction.
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Affiliation(s)
- Maciej Roman
- Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
| | - Tomasz P Wrobel
- Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
- Solaris National Synchrotron Radiation Centre, Jagiellonian University, Krakow, Poland
| | - Agnieszka Panek
- Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
| | | | - Wojciech M Kwiatek
- Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
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12
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Domańska IM, Oledzka E, Sobczak M. Sterilization process of polyester based anticancer-drug delivery systems. Int J Pharm 2020; 587:119663. [PMID: 32702451 DOI: 10.1016/j.ijpharm.2020.119663] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/02/2020] [Accepted: 07/14/2020] [Indexed: 01/07/2023]
Abstract
Recently, growing interest in biodegradable polyesters as drug carriers in the development of innovative anticancer drug delivery systems (DDSs) has been observed. These compounds are thermally unstable, and are therefore, particularly demanding due to the limited number of available sterilization techniques. Furthermore, the DDSs sterilization process is often limited to aseptic filtration. Ensuring aseptic production is very demanding and costly, and it is therefore necessary to work on the application of new sterilization methods. In view of this, this review presents the current state of knowledge regarding the radiation sterilization process of some anticancer drugs as well biodegradable polyester carriers (such as polylactide, polyglycolide, poly(ε-caprolactone), poly(trimethylene carbonate) and co- or terpolymers of lactide, glycolide, ε-caprolactone and trimethylene carbonate). The structural changes in anticancer DDSs under the influence of ionizing radiation and the potential degradation mechanisms of both, polyester carriers and cytostatics during the sterilization process of ionizing radiation as well as their effects on the microstructure and properties of DDSs have been discussed in this paper.
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Affiliation(s)
- Izabela M Domańska
- Department of Biomaterials Chemistry, Chair of Analytical Chemistry and Biomaterials, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha St., Warsaw 02-097, Poland.
| | - Ewa Oledzka
- Department of Biomaterials Chemistry, Chair of Analytical Chemistry and Biomaterials, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha St., Warsaw 02-097, Poland.
| | - Marcin Sobczak
- Department of Biomaterials Chemistry, Chair of Analytical Chemistry and Biomaterials, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha St., Warsaw 02-097, Poland.
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13
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Condón-Abanto S, Pedrós-Garrido S, Cebrián G, Raso J, Condón S, Lyng JG, Álvarez I. Crab-meat-isolated psychrophilic spore forming bacteria inactivation by electron beam ionizing radiation. Food Microbiol 2018; 76:374-381. [PMID: 30166163 DOI: 10.1016/j.fm.2018.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 04/17/2018] [Accepted: 06/11/2018] [Indexed: 10/14/2022]
Abstract
The present work was performed to evaluate the potential of electron beam ionizing radiation for the inactivation of three psychrophilic spore forming bacteria (Bacillus mycoides, Bacillus weihenstephanensis and Psychrobacillus psychrodurans) isolated from ready-to-eat brown crab (Cancer pagurus). Inactivation curves for the three spores were performed in both types of crab meat, brown and white. Also the effect of pH and water activity (aw) on the lethal efficacy of ionizing radiation, for the three different psychrophilic spore forming bacteria, was evaluated. The effects of pH, aw and their possible interactions were assessed in citrate-phosphate buffers of different pH, ranging between 7 and 4, and aw, ranging from <0.99 to 0.80. A reduction of aw increased the spores resistance between >0.99 and 0.90, while an aw reduction from 0.90 to 0.80 had a minor impact on their resistance. In contrast to aw, the effect of pH showed a greater variability depending on the spore species. While pH did not affect the resistance of B. weihenstephanensis at any aw, B. mycoides showed slightly higher resistance at pH 5.5 at aw of 0.90 and 0.80. pH showed a significant effect on the resistance of P. psychrodurans. For the two types of crab meat, slightly differences were observed in 6D values. B. weihenstephanensis was the most resistant, requiring 7.3-7.6 kGy to inactivate 6 Log10-cycles of this spore forming bacterium, while for B. mycoides and P. psychrodurans 6.1-6.3 and 5.4-5.3 kGy respectively were necessary to reach the same inactivation level in crab meat. An agreement between spore resistance in crab meats and lab media, with similar characteristics in pH and aw, was also observed. The results obtained in this research demonstrated the potential for ionizing radiation to achieve an appropriate inactivation level of spores naturally present in brown crab with the application of doses lower than 10 kGy.
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Affiliation(s)
- S Condón-Abanto
- Grupo de Nuevas Tecnologías de Conservación de Alimentos, Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013, Zaragoza, Spain; UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Ireland
| | - S Pedrós-Garrido
- Grupo de Nuevas Tecnologías de Conservación de Alimentos, Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013, Zaragoza, Spain; School of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - G Cebrián
- Grupo de Nuevas Tecnologías de Conservación de Alimentos, Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013, Zaragoza, Spain
| | - J Raso
- Grupo de Nuevas Tecnologías de Conservación de Alimentos, Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013, Zaragoza, Spain
| | - S Condón
- Grupo de Nuevas Tecnologías de Conservación de Alimentos, Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013, Zaragoza, Spain
| | - J G Lyng
- UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Ireland
| | - I Álvarez
- Grupo de Nuevas Tecnologías de Conservación de Alimentos, Facultad de Veterinaria, Universidad de Zaragoza, C/ Miguel Servet 177, 50013, Zaragoza, Spain.
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Hase Y, Satoh K, Kitamura S, Oono Y. Physiological status of plant tissue affects the frequency and types of mutations induced by carbon-ion irradiation in Arabidopsis. Sci Rep 2018; 8:1394. [PMID: 29362368 PMCID: PMC5780457 DOI: 10.1038/s41598-018-19278-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 12/27/2017] [Indexed: 11/09/2022] Open
Abstract
Ionizing radiation including heavy-ion beams has been widely used in mutation breeding. Dry seeds, seedlings, and cultured tissues are often used for mutagenesis; however, little is known about the differences in induced mutations among them. Here, we examined the characteristics of mutations using randomly chosen Arabidopsis M2 plants derived from dry seeds and seedlings irradiated with carbon ions. The mutation frequency was 1.4-1.9 times higher in dry-seed irradiation than in seedling irradiation. This difference was mainly due to the three-times higher frequency of insertions and deletions (InDels) in dry-seed irradiation than in seedling irradiation. This difference increased the proportion of mutations predicted to affect gene function among all mutations identified by whole genome re-sequencing. Our results demonstrate that the physiological status of plant tissue greatly affects the characteristics of mutations induced by ionizing radiation, and that dry seeds are more suitable materials than seedlings for inducing loss-of-function mutations. The results also showed that single base deletions often occurred in homopolymeric sequences, while InDels larger than 2-3 bp often occurred in or near polynucleotide-repeat or microhomologous sequences. Interestingly, microhomology was less commonly found around large deletions (≥50 bp), suggesting that the rejoining process differs depending on the deletion size.
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Affiliation(s)
- Yoshihiro Hase
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology (QST), 1233 Watanuki, Takasaki, Gunma 370-1292, Japan.
| | - Katsuya Satoh
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology (QST), 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - Satoshi Kitamura
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology (QST), 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - Yutaka Oono
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology (QST), 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
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15
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Kai T, Yokoya A, Ukai M, Fujii K, Toigawa T, Watanabe R. A significant role of non-thermal equilibrated electrons in the formation of deleterious complex DNA damage. Phys Chem Chem Phys 2018; 20:2838-2844. [DOI: 10.1039/c7cp06903k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Although most of the radiation damage to genomic DNA could be rendered harmless using repair enzymes in a living cell, a certain fraction of the damage is persistent resulting in serious genetic effects, such as mutation induction.
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Affiliation(s)
- Takeshi Kai
- Nuclear Science and Engineering Center
- Japan Atomic Energy Agency
- Ibaraki
- Japan
| | - Akinari Yokoya
- Quantum Beam Science Research Directorate
- National Institutes for Quantum and Radiological Science and Technology
- Ibaraki
- Japan
| | - Masatoshi Ukai
- Department of Applied Physics
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
| | - Kentaro Fujii
- Quantum Beam Science Research Directorate
- National Institutes for Quantum and Radiological Science and Technology
- Ibaraki
- Japan
| | - Tomohiro Toigawa
- Nuclear Science and Engineering Center
- Japan Atomic Energy Agency
- Ibaraki
- Japan
| | - Ritsuko Watanabe
- Quantum Beam Science Research Directorate
- National Institutes for Quantum and Radiological Science and Technology
- Ibaraki
- Japan
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16
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Noda M, Ma Y, Yoshikawa Y, Imanaka T, Mori T, Furuta M, Tsuruyama T, Yoshikawa K. A single-molecule assessment of the protective effect of DMSO against DNA double-strand breaks induced by photo-and γ-ray-irradiation, and freezing. Sci Rep 2017; 7:8557. [PMID: 28819291 PMCID: PMC5561226 DOI: 10.1038/s41598-017-08894-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/14/2017] [Indexed: 11/09/2022] Open
Abstract
Dimethyl sulfoxide (DMSO) is widely used as a cryoprotectant for organs, tissues, and cell suspension in storage. In addition, DMSO is known to be a useful free radical scavenger and a radio-protectant. To date, many in vitro assays using cultured cells have been performed for analysing the protective effect of DMSO against genomic DNA damage; however, currently it has been rather difficult to detect DNA double strand breaks (DSBs) in a quantitative manner. In the present study, we aimed to observe the extent of DNA damage by use of single molecular observation with a fluorescence microscope to evaluate DSBs induced by photo- and γ-ray-irradiation, or freeze/thawing in variable concentrations of DMSO. As a result, we found that 2% DMSO conferred the maximum protective effect against all of the injury sources tested, and these effects were maintained at higher concentrations. Further, DMSO showed a significantly higher protective effect against freezing-induced damage than against photo- and γ-ray-irradiation-induced damage. Our study provides significant data for the optimization of DNA cryopreservation with DMSO, as well as for the usage of DNA as the protective agent against the injuries caused by active oxygen and radiations.
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Affiliation(s)
- Masami Noda
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, 610-0321, Japan
| | - Yue Ma
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, 610-0321, Japan
| | - Yuko Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, 610-0321, Japan
| | - Tadayuki Imanaka
- Research Organization of Science and Technology, Ritsumeikan University, Shiga, 525-8577, Japan
| | - Toshiaki Mori
- Graduate School of Engineering, Department of Quantum and Radiation Technology, Osaka Prefecture University, Osaka, 599-8570, Japan
| | - Masakazu Furuta
- Graduate School of Engineering, Department of Quantum and Radiation Technology, Osaka Prefecture University, Osaka, 599-8570, Japan
| | - Tatsuaki Tsuruyama
- Drug Discovery and Medicine, Department of Pathology, Graduate School of Medicine, Kyoto University, Kyoto, 606-8501, Japan
| | - Kenichi Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, 610-0321, Japan.
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Thopan P, Yu L, Brown IG, Tippawan U. Low-Energy Ion-Species-Dependent Induction of DNA Double-Strand Breaks: Ion Energy and Fluence Thresholds. Radiat Res 2017; 188:426-432. [PMID: 28767313 DOI: 10.1667/rr14721.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The goal of this study was to determine the critical ion-radiation conditions under which heavy ion beams can induce DNA double-strand breaks. Helium, nitrogen and argon-ion beams in the energy range of 20 eV to 2 keV were used to irradiate naked DNA plasmid pGFP to fluences of 1, 2 and 4 × 1015 ions/cm2. The topological forms of DNA were subsequently analyzed using gel electrophoresis. The DNA forms were changed from the original supercoiled to damaged relaxed and linear forms, depending on the ion mass, energy, fluence and inertia. We found ion energy and fluence thresholds above which direct double-strand breaks can occur. The threshold is discussed in terms of the areal ion-energy density and the cross-section.
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Affiliation(s)
- Prutchayawoot Thopan
- a Plasma and Beam Physics Research Facility, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Liangdeng Yu
- a Plasma and Beam Physics Research Facility, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,b Thailand Center of Excellence in Physics, Commission on Higher Education, Bangkok 10400, Thailand
| | - Ian G Brown
- c Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Udomrat Tippawan
- a Plasma and Beam Physics Research Facility, Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
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18
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Rezaee M, Hill RP, Jaffray DA. The Exploitation of Low-Energy Electrons in Cancer Treatment. Radiat Res 2017; 188:123-143. [PMID: 28557630 DOI: 10.1667/rr14727.1] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Given the distinct characteristics of low-energy electrons (LEEs), particularly at energies less than 30 eV, they can be applied to a wide range of therapeutic modalities to improve cancer treatment. LEEs have been shown to efficiently produce complex molecular damage resulting in substantial cellular toxicities. Since LEEs are produced in copious amounts from high-energy radiation beam, including photons, protons and ions; the control of LEE distribution can potentially enhance the therapeutic radio of such beams. LEEs can play a substantial role in the synergistic effect between radiation and chemotherapy, particularly halogenated and platinum-based anticancer drugs. Radiosensitizing entities containing atoms of high atomic number such as gold nanoparticles can be a source of LEE production if high-energy radiation interacts with them. This can provide a high local density of LEEs in a cell and produce cellular toxicity. Auger-electron-emitting radionuclides also create a high number of LEEs in each decay, which can induce lethal damage in a cell. Exploitation of LEEs in cancer treatment, however, faces a few challenges, such as dosimetry of LEEs and selective delivery of radiosensitizing and chemotherapeutic molecules close to cellular targets. This review first discusses the rationale for utilizing LEEs in cancer treatment by explaining their mechanism of action, describes theoretical and experimental studies at the molecular and cellular levels, then discusses strategies for achieving modification of the distribution and effectiveness of LEEs in cancerous tissue and their associated clinical benefit.
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Affiliation(s)
- Mohammad Rezaee
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Ontario Cancer Institute and Campbell Family Institute for Cancer Research and Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Richard P Hill
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Ontario Cancer Institute and Campbell Family Institute for Cancer Research and Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - David A Jaffray
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Ontario Cancer Institute and Campbell Family Institute for Cancer Research and Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
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19
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Moeller R, Raguse M, Leuko S, Berger T, Hellweg CE, Fujimori A, Okayasu R, Horneck G. STARLIFE-An International Campaign to Study the Role of Galactic Cosmic Radiation in Astrobiological Model Systems. ASTROBIOLOGY 2017; 17:101-109. [PMID: 28151691 DOI: 10.1089/ast.2016.1571] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In-depth knowledge regarding the biological effects of the radiation field in space is required for assessing the radiation risks in space. To obtain this knowledge, a set of different astrobiological model systems has been studied within the STARLIFE radiation campaign during six irradiation campaigns (2013-2015). The STARLIFE group is an international consortium with the aim to investigate the responses of different astrobiological model systems to the different types of ionizing radiation (X-rays, γ rays, heavy ions) representing major parts of the galactic cosmic radiation spectrum. Low- and high-energy charged particle radiation experiments have been conducted at the Heavy Ion Medical Accelerator in Chiba (HIMAC) facility at the National Institute of Radiological Sciences (NIRS) in Chiba, Japan. X-rays or γ rays were used as reference radiation at the German Aerospace Center (DLR, Cologne, Germany) or Beta-Gamma-Service GmbH (BGS, Wiehl, Germany) to derive the biological efficiency of different radiation qualities. All samples were exposed under identical conditions to the same dose and qualities of ionizing radiation (i) allowing a direct comparison between the tested specimens and (ii) providing information on the impact of the space radiation environment on currently used astrobiological model organisms. Key Words: Space radiation environment-Sparsely ionizing radiation-Densely ionizing radiation-Heavy ions-Gamma radiation-Astrobiological model systems. Astrobiology 17, 101-109.
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Affiliation(s)
- Ralf Moeller
- 1 Radiation Biology Department, Institute of Aerospace Medicine , German Aerospace Center (DLR), Cologne, Germany
| | - Marina Raguse
- 1 Radiation Biology Department, Institute of Aerospace Medicine , German Aerospace Center (DLR), Cologne, Germany
| | - Stefan Leuko
- 1 Radiation Biology Department, Institute of Aerospace Medicine , German Aerospace Center (DLR), Cologne, Germany
| | - Thomas Berger
- 1 Radiation Biology Department, Institute of Aerospace Medicine , German Aerospace Center (DLR), Cologne, Germany
| | - Christine Elisabeth Hellweg
- 1 Radiation Biology Department, Institute of Aerospace Medicine , German Aerospace Center (DLR), Cologne, Germany
| | - Akira Fujimori
- 2 Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS) , Chiba, Japan
| | - Ryuichi Okayasu
- 2 Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS) , Chiba, Japan
| | - Gerda Horneck
- 1 Radiation Biology Department, Institute of Aerospace Medicine , German Aerospace Center (DLR), Cologne, Germany
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20
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Narita A, Fujii K, Baba Y, Shimoyama I. Use of a DNA film on a self-assembled monolayer for investigating the physical process of DNA damage induced by core electron ionization. Int J Radiat Biol 2016; 92:733-738. [PMID: 27192925 DOI: 10.1080/09553002.2016.1179812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE A novel two-layer sample composed of a deoxyribonucleic acid (DNA) film and self-assembled monolayer (SAM) was prepared on an inorganic surface to mimic the processes in which DNA is damaged by soft X-ray irradiation. MATERIALS AND METHODS A mercaptopropyltrimethoxysilane (MPTS) SAM was formed on a sapphire surface, then oligonucleotide (OGN) molecules were adsorbed on the MPTS-SAM. The thicknesses and chemical states of the layers were determined by X-ray photoelectron spectroscopy (XPS) and near-edge X-ray fine structure (NEXAFS) around the phosphorus (P) and sulfur (S) K-edges. To induce the damage to the OGN molecules, the sample was irradiated with synchrotron soft X-rays. The chemical state of the OGN molecules before and after irradiation was examined by NEXAFS around the nitrogen (N) K-edge region. RESULTS The thickness of the MPTS-OGN layer was approximately 7.7 nm. The S atom of the OGN molecules was located at the bottom of the OGN layer. The peak shape of the N K-edge NEXAFS spectra of the MPTS-OGN layers clearly changed following irradiation. CONCLUSIONS The MPTS-OGN layer formed on the sapphire surface. The chemical states and the structure of the interface were elucidated using synchrotron soft X-rays. The OGN molecules adsorbed on the MPTS films decomposed upon exposure to soft X-ray irradiation.
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Affiliation(s)
- Ayumi Narita
- a Japan Atomic Energy Agency , Shirakata, Tokai , Naka , Ibaraki , Japan
| | - Kentaro Fujii
- a Japan Atomic Energy Agency , Shirakata, Tokai , Naka , Ibaraki , Japan
| | - Yuji Baba
- a Japan Atomic Energy Agency , Shirakata, Tokai , Naka , Ibaraki , Japan
| | - Iwao Shimoyama
- a Japan Atomic Energy Agency , Shirakata, Tokai , Naka , Ibaraki , Japan
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21
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Souici M, Khalil TT, Boulanouar O, Belafrites A, Mavon C, Fromm M. DNA strand break dependence on Tris and arginine scavenger concentrations under ultra-soft X-ray irradiation: the contribution of secondary arginine radicals. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2016; 55:215-228. [PMID: 26994994 DOI: 10.1007/s00411-016-0642-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 03/01/2016] [Indexed: 06/05/2023]
Abstract
In this study, we used a bench-top cold-cathode ultra-soft X-ray (USX) generator to expose aqueous DNA plasmid solutions to low-LET radiation under various scavenging conditions. Single- and double-strand breaks were assessed using classic gel electrophoresis quantification of linear, circular and supercoiled plasmid DNA topologies. With their very low penetration range in water, USX can only interact with matter up to short distances, of the order of 50 μm. We validated a stirring procedure which makes it possible to expose 100 µL of aqueous samples (2 mm thick). The scavenging of OH radicals by Tris buffer was studied at ambient temperature under aerobic conditions and compared to data gathered in the literature. A very good agreement was found with the rare data dealing with DNA plasmid exposed to Al Kα photons at low temperature (T ≤ 277 K), which therefore validated the experimental procedure. The yields for DNA single-strand breaks determined during this study enabled the ratio of indirect to direct effects to be determined at 96.2%, in good agreement with the value of 97.7% stemming from a study based on γ-ray irradiation of frozen solutions of plasmid DNA. Then, arginine was used both to create a "biological-like" chemical environment around the DNA plasmids and as an OH radical scavenger, in vitro. Although arginine has a greater scavenging (protecting) power than Tris, surprisingly, it led to higher rates of strand breakage. Based on the specific binding modes of arginine to DNA, we suggest that the side effects observed are due to the presence of arginine near to, but also inside, the DNA double helix.
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Affiliation(s)
- Mounir Souici
- UMR CNRS 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
- Laboratoire de Physique des Rayonnements et Applications, Université de Jijel, B.P. 98, 18000, Ouled Aissa, Jijel, Algeria
| | - Talat Tariq Khalil
- UMR CNRS 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Omar Boulanouar
- UMR CNRS 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Abdelfettah Belafrites
- Laboratoire de Physique des Rayonnements et Applications, Université de Jijel, B.P. 98, 18000, Ouled Aissa, Jijel, Algeria
| | - Christophe Mavon
- UMR CNRS 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France
| | - Michel Fromm
- UMR CNRS 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, 16 route de Gray, 25030, Besançon Cedex, France.
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Melanin Nanoparticles (MNPs) provide protection against whole-body ɣ-irradiation in mice via restoration of hematopoietic tissues. Mol Cell Biochem 2014; 399:59-69. [DOI: 10.1007/s11010-014-2232-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 09/27/2014] [Indexed: 12/11/2022]
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23
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Zubek M, Wasowicz TJ, Dąbkowska I, Kivimäki A, Coreno M. Hydrogen migration in formation of NH(A³Π) radicals via superexcited states in photodissociation of isoxazole molecules. J Chem Phys 2014; 141:064301. [PMID: 25134565 DOI: 10.1063/1.4891808] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Formation of the excited NH(A(3)Π) free radicals in the photodissociation of isoxazole (C3H3NO) molecules has been studied over the 14-22 eV energy range using photon-induced fluorescence spectroscopy. The NH(A(3)Π) is produced through excitation of the isoxazole molecules into higher-lying superexcited states. Observation of the NH radical, which is not a structural unit of the isoxazole molecule, corroborates the hydrogen atom (or proton) migration within the molecule prior to dissociation. The vertical excitation energies of the superexcited states were determined and the dissociation mechanisms of isoxazole are discussed. The density functional and ab initio quantum chemical calculations have been performed to study the mechanism of the NH formation.
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Affiliation(s)
- Mariusz Zubek
- Department of Physics of Electronic Phenomena, Gdańsk University of Technology, 80-233 Gdańsk, Poland
| | - Tomasz J Wasowicz
- Department of Physics of Electronic Phenomena, Gdańsk University of Technology, 80-233 Gdańsk, Poland
| | - Iwona Dąbkowska
- Department of Chemistry, University of Gdańsk, 80-952 Gdańsk, Poland
| | | | - Marcello Coreno
- Gas Phase beamline@Elettra, Basovizza Area Science Park, 34149 Trieste, Italy
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24
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Resistance of Bacillus subtilis spore DNA to lethal ionizing radiation damage relies primarily on spore core components and DNA repair, with minor effects of oxygen radical detoxification. Appl Environ Microbiol 2013; 80:104-9. [PMID: 24123749 DOI: 10.1128/aem.03136-13] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The roles of various core components, including α/β/γ-type small acid-soluble spore proteins (SASP), dipicolinic acid (DPA), core water content, and DNA repair by apurinic/apyrimidinic (AP) endonucleases or nonhomologous end joining (NHEJ), in Bacillus subtilis spore resistance to different types of ionizing radiation including X rays, protons, and high-energy charged iron ions have been studied. Spores deficient in DNA repair by NHEJ or AP endonucleases, the oxidative stress response, or protection by major α/β-type SASP, DPA, and decreased core water content were significantly more sensitive to ionizing radiation than wild-type spores, with highest sensitivity to high-energy-charged iron ions. DNA repair via NHEJ and AP endonucleases appears to be the most important mechanism for spore resistance to ionizing radiation, whereas oxygen radical detoxification via the MrgA-mediated oxidative stress response or KatX catalase activity plays only a very minor role. Synergistic radioprotective effects of α/β-type but not γ-type SASP were also identified, indicating that α/β-type SASP's binding to spore DNA is important in preventing DNA damage due to reactive oxygen species generated by ionizing radiation.
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25
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Moeller R, Reitz G, Li Z, Klein S, Nicholson WL. Multifactorial resistance of Bacillus subtilis spores to high-energy proton radiation: role of spore structural components and the homologous recombination and non-homologous end joining DNA repair pathways. ASTROBIOLOGY 2012; 12:1069-77. [PMID: 23088412 PMCID: PMC3491616 DOI: 10.1089/ast.2012.0890] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The space environment contains high-energy charged particles (e.g., protons, neutrons, electrons, α-particles, heavy ions) emitted by the Sun and galactic sources or trapped in the radiation belts. Protons constitute the majority (87%) of high-energy charged particles. Spores of Bacillus species are one of the model systems used for astro- and radiobiological studies. In this study, spores of different Bacillus subtilis strains were used to study the effects of high energetic proton irradiation on spore survival. Spores of the wild-type B. subtilis strain [mutants deficient in the homologous recombination (HR) and non-homologous end joining (NHEJ) DNA repair pathways and mutants deficient in various spore structural components such as dipicolinic acid (DPA), α/β-type small, acid-soluble spore protein (SASP) formation, spore coats, pigmentation, or spore core water content] were irradiated as air-dried multilayers on spacecraft-qualified aluminum coupons with 218 MeV protons [with a linear energy transfer (LET) of 0.4 keV/μm] to various final doses up to 2500 Gy. Spores deficient in NHEJ- and HR-mediated DNA repair were significantly more sensitive to proton radiation than wild-type spores, indicating that both HR and NHEJ DNA repair pathways are needed for spore survival. Spores lacking DPA, α/β-type SASP, or with increased core water content were also significantly more sensitive to proton radiation, whereas the resistance of spores lacking pigmentation or spore coats was essentially identical to that of the wild-type spores. Our results indicate that α/β-type SASP, core water content, and DPA play an important role in spore resistance to high-energy proton irradiation, suggesting their essential function as radioprotectants of the spore interior.
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Affiliation(s)
- Ralf Moeller
- German Aerospace Center (DLR e.V.), Institute of Aerospace Medicine, Radiation Biology Department, Cologne, Germany.
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Madugundu GS, Park Y, Sanche L, Wagner JR. Radiation-induced formation of 2',3'-dideoxyribonucleosides in DNA: a potential signature of low-energy electrons. J Am Chem Soc 2012; 134:17366-8. [PMID: 23057636 DOI: 10.1021/ja306810w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have identified a series of modifications of the 2'-deoxyribose moiety of DNA arising from the exposure of isolated and cellular DNA to ionizing radiation. The modifications consist of 2',3'-dideoxyribonucleoside derivatives of T, C, A, and G, as identified by enzymatic digestion and LC-MS/MS. Under dry conditions, the yield of these products was 6- to 44-fold lower than the yield of 8-oxo-7,8-dihydroguanine. We propose that 2',3'-dideoxyribonucleosides are generated from the reaction of low-energy electrons with DNA, leading to cleavage of the C3'-O bond and formation of the corresponding C3'-deoxyribose radical.
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Affiliation(s)
- Guru S Madugundu
- Department of Nuclear Medicine and Radiobiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec J1H 5N4, Canada
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27
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Alizadeh E, Sanche L. Absolute measurements of radiation damage in nanometer-thick films. RADIATION PROTECTION DOSIMETRY 2012; 151:591-9. [PMID: 22562941 PMCID: PMC3846537 DOI: 10.1093/rpd/ncs036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The problem of absolute measurements of radiation damage in films of nanometer thicknesses is addressed. Thin films of DNA (∼2-160 nm) are deposited onto glass substrates and irradiated with varying doses of 1.5-keV X-rays under dry N(2) at atmospheric pressure and room temperature. For each different thickness, the damage is assessed by measuring the loss of the supercoiled configuration as a function of incident photon fluence. From the exposure curves, the G-values are deduced, assuming that X-ray photons interacting with DNA deposit all of their energy in the film. The results show that the G-value (i.e. damage per unit of deposited energy) increases with film thickness and reaches a plateau at 30±5 nm. This thickness dependence provides a correction factor to estimate the actual G-value for films with thicknesses <30 nm thickness. Thus, the absolute values of the damage can be compared with that of films of any thickness under different experimental conditions.
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Affiliation(s)
- Elahe Alizadeh
- Groupe en Science des Radiations, Département de Médecine Nucléaire et Radiobiologie, Faculté de Médecine et des Sciences de la santé, Université de Sherbrooke, Sherbrooke, Canada J1H 5N4.
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28
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Preliminary studies into profiling DNA recovered from a radiation or radioactivity incident. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-2088-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Zhao W, Jiang X, Deng W, Lai Y, Wu M, Zhang Z. Antioxidant activities of Ganoderma lucidum polysaccharides and their role on DNA damage in mice induced by cobalt-60 gamma-irradiation. Food Chem Toxicol 2012; 50:303-9. [DOI: 10.1016/j.fct.2011.10.071] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 09/27/2011] [Accepted: 10/18/2011] [Indexed: 10/15/2022]
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30
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Effect of γ-radiation on green onion DNA integrity: Role of ascorbic acid and polyphenols against nucleic acid damage. Food Chem 2011. [DOI: 10.1016/j.foodchem.2011.03.098] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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31
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Role of the Nfo and ExoA apurinic/apyrimidinic endonucleases in radiation resistance and radiation-induced mutagenesis of Bacillus subtilis spores. J Bacteriol 2011; 193:2875-9. [PMID: 21441501 DOI: 10.1128/jb.00134-11] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The roles of DNA repair by apurinic/apyrimidinic (AP) endonucleases alone, and together with DNA protection by α/β-type small acid-soluble spore proteins (SASP), in Bacillus subtilis spore resistance to different types of radiation have been studied. Spores lacking both AP endonucleases (Nfo and ExoA) and major SASP were significantly more sensitive to 254-nm UV-C, environmental UV (>280 nm), X-ray exposure, and high-energy charged (HZE)-particle bombardment and had elevated mutation frequencies compared to those of wild-type spores and spores lacking only one or both AP endonucleases or major SASP. These findings further implicate AP endonucleases and α/β-type SASP in repair and protection, respectively, of spore DNA against effects of UV and ionizing radiation.
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32
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Gual MR, Milian FM, Deppman A, Coelho PRP. Study of DNA damage with a new system for irradiation of samples in a nuclear reactor. Appl Radiat Isot 2011; 69:373-6. [PMID: 21075641 DOI: 10.1016/j.apradiso.2010.10.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2007] [Revised: 10/25/2010] [Accepted: 10/25/2010] [Indexed: 11/29/2022]
Abstract
In this paper, we report results of a quantitative analysis of the effects of neutrons on DNA, and, specifically, the production of simple and double breaks of plasmid DNA in aqueous solutions with different concentrations of free-radical scavengers. The radiation damage to DNA was evaluated by electrophoresis through agarose gels. The neutron and gamma doses were measured separately with thermoluminescent detectors. In this work, we have also demonstrated usefulness of a new system for positioning and removing samples in channel BH#3 of the IEA-R1 reactor at the Instituto de Pesquisas Energéticas e Nucleares (Brazil) without necessity of interrupting the reactor operation.
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Affiliation(s)
- Maritza R Gual
- Instituto Superior de Tecnologías y Ciencias Aplicadas, InSTEC; Avenida Salvador Allende y Luaces, Quinta de Los Molinos, Plaza de la Revolución, Havana, AP 6163, Cuba.
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33
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Ebrahimi A, Habibi-khorassani M, Haghani A. Effect of protonation on individual hydrogen bonds in the 8-oxoguanine-cytosine base pair: NMR, NBO and AIM analyses. Mol Phys 2011. [DOI: 10.1080/00268976.2010.521781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Kumar A, Sevilla MD. Proton-coupled electron transfer in DNA on formation of radiation-produced ion radicals. Chem Rev 2010; 110:7002-23. [PMID: 20443634 PMCID: PMC2947616 DOI: 10.1021/cr100023g] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Anil Kumar
- Department of Chemistry, Oakland University, Rochester, MI 48309
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35
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Yoshikawa Y, Mori T, Suzuki M, Imanaka T, Yoshikawa K. Comparative study of kinetics on DNA double-strand break induced by photo- and gamma-irradiation: Protective effect of water-soluble flavonoids. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Champion C, Lekadir H, Galassi ME, Fojón O, Rivarola RD, Hanssen J. Theoretical predictions for ionization cross sections of DNA nucleobases impacted by light ions. Phys Med Biol 2010; 55:6053-67. [DOI: 10.1088/0031-9155/55/20/002] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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37
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Xie Y, Zhang H, Hao JF, Qiu R. Effect of N-acetylcysteine on (12)C(6+) ion irradiation-induced lymphocytes DNA damages and immunity changes in mice. JOURNAL OF RADIATION RESEARCH 2009; 50:567-571. [PMID: 19696471 DOI: 10.1269/jrr.09047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The aims of present study are to estimate the biological risks to the immunity of mice exposed to heavy ion radiation and to investigate the effect of N-acetylcysteine (NAC) on (12)C(6+) ion irradiation-induced lymphocyte DNA damage. Results showed that in the brine group, the levels of lymphocyte DNA damage and MN, thymocytes G(2)/M phase arrest and apoptosis percentages (except for activity of NK cells) were up at each time point. A time-response curve for MN and DNA damage appeared in the NAC group. We found that whole-body (12)C(6+) ion irradiation at a dose of 4 Gy could: induce lymphocyte DNA double-strand breaks (DSBs); immunocytes DSBs may lead to acute effects on immunity; and 200 mg/kg NAC showed significant protection against radiation harm.
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Affiliation(s)
- Yi Xie
- Research Center for Heavy Ion Radiation Biology and Medicine, Institute of Modern Physics, Chinese Academy of Science, Lanzhou, China
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38
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DNA reviews: DNA identification following CBRN incidents. Forensic Sci Med Pathol 2008; 4:255-8. [DOI: 10.1007/s12024-008-9066-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/20/2008] [Indexed: 10/21/2022]
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