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Rahmanian S, Niklas M, Abdollahi A, Jäkel O, Greilich S. Application of fluorescent nuclear track detectors for cellular dosimetry. Phys Med Biol 2017; 62:2719-2740. [DOI: 10.1088/1361-6560/aa56b4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Lacombe J, Phillips SL, Zenhausern F. Microfluidics as a new tool in radiation biology. Cancer Lett 2015; 371:292-300. [PMID: 26704304 DOI: 10.1016/j.canlet.2015.11.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/20/2015] [Accepted: 11/27/2015] [Indexed: 12/26/2022]
Abstract
Ionizing radiations interact with molecules at the cellular and molecular levels leading to several biochemical modifications that may be responsible for biological effects on tissue or whole organisms. The study of these changes is difficult because of the complexity of the biological response(s) to radiations and the lack of reliable models able to mimic the whole molecular phenomenon and different communications between the various cell networks, from the cell activation to the macroscopic effect at the tissue or organismal level. Microfluidics, the science and technology of systems that can handle small amounts of fluids in confined and controlled environment, has been an emerging field for several years. Some microfluidic devices, even at early stages of development, may already help radiobiological research by proposing new approaches to study cellular, tissue and total-body behavior upon irradiation. These devices may also be used in clinical biodosimetry since microfluidic technology is frequently developed for integrating complex bioassay chemistries into automated user-friendly, reproducible and sensitive analyses. In this review, we discuss the use, numerous advantages, and possible future of microfluidic technology in the field of radiobiology. We will also examine the disadvantages and required improvements for microfluidics to be fully practical in radiation research and to become an enabling tool for radiobiologists and radiation oncologists.
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Affiliation(s)
- Jerome Lacombe
- Center for Applied NanoBioscience and Medicine, University of Arizona, 145 S. 79th Street, Chandler, AZ 85226, USA.
| | - Shanna Leslie Phillips
- Center for Applied NanoBioscience and Medicine, University of Arizona, 145 S. 79th Street, Chandler, AZ 85226, USA; Translational Genomics Research Institute, 445 N. Fifth Street, Phoenix, AZ 85004, USA
| | - Frederic Zenhausern
- Center for Applied NanoBioscience and Medicine, University of Arizona, 145 S. 79th Street, Chandler, AZ 85226, USA; Translational Genomics Research Institute, 445 N. Fifth Street, Phoenix, AZ 85004, USA; Department of Basic Medical Sciences, College of Medicine Phoenix, 425 N. 5th Street, Phoenix, AZ 85004, USA.
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Morgan WF, Sowa MB. Non-targeted effects induced by ionizing radiation: Mechanisms and potential impact on radiation induced health effects. Cancer Lett 2015; 356:17-21. [DOI: 10.1016/j.canlet.2013.09.009] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 08/27/2013] [Accepted: 09/08/2013] [Indexed: 01/08/2023]
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Ugenskiene R, Prise K, Folkard M, Lekki J, Stachura Z, Zazula M, Stachura J. Dose response and kinetics of foci disappearance following exposure to high- and low-LET ionizing radiation. Int J Radiat Biol 2009. [DOI: 10.1080/09553000903072462] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Pataky K, Villanueva G, Liani A, Zgheib O, Jenkins N, Halazonetis DJ, Halazonetis TD, Brugger J. Microcollimator for micrometer-wide stripe irradiation of cells using 20-30 keV X rays. Radiat Res 2009; 172:252-9. [PMID: 19630530 DOI: 10.1667/rr1483.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Abstract Pataky, K., Villanueva, G., Liani, A., Zgheib, O., Jenkins, N., Halazonetis, D. J., Halazonetis, T. D. and Brugger, J. Microcollimator for Micrometer-Wide Stripe Irradiation of Cells Using 20-30 keV X Rays. Radiat. Res. 172, 252-259 (2009). The exposure of subnuclear compartments of cells to ionizing radiation is currently not trivial. We describe here a collimator for micrometer-wide stripe irradiation designed to work with conventional high-voltage X-ray tubes and cells cultured on standard glass cover slips. The microcollimator was fabricated by high-precision silicon micromachining and consists of X-ray absorbing chips with grooves of highly controlled depths, between 0.5-10 microm, along their surfaces. These grooves form X-ray collimating slits when the chips are stacked against each other. The use of this device for radiation biology was examined by irradiating human cells with X rays having energies between 20-30 keV. After irradiation, p53 binding protein 1 (53BP1), a nuclear protein that is recruited at sites of DNA double-strand breaks, clustered in lines corresponding to the irradiated stripes.
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Affiliation(s)
- Kristopher Pataky
- Microsystems Laboratory, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland
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Mitchell SA, Marino SA, Brenner DJ, Hall EJ. Bystander effect and adaptive response in C3H 10T½ cells. Int J Radiat Biol 2009; 80:465-72. [PMID: 15360084 DOI: 10.1080/09553000410001725116] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE To address the relationship between the bystander effect and the adaptive response that can compete to impact on the dose-response curve at low doses. MATERIALS AND METHODS A novel radiation apparatus, where targeted and non-targeted cells were grown in close proximity, was used to investigate these phenomena in C3H 10T(1/2) cells. It was further examined whether a bystander effect or an adaptive response could be induced by a factor(s) present in the supernatants of cells exposed to a high or low dose of X-rays, respectively. RESULTS When non-hit cells were co-cultured for 24 h with cells irradiated with 5 Gy alpha-particles, a significant increase in both cell killing and oncogenic transformation frequency was observed. If these cells were treated with 2 cGy X-rays 5 h before co-culture with irradiated cells, approximately 95% of the bystander effect was cancelled out. A 2.5-fold decrease in the oncogenic transformation frequency was also observed. When cells were cultured in medium donated from cells exposed to 5 Gy X-rays, a significant bystander effect was observed for clonogenic survival. When cells were cultured for 5 h with supernatant from donor cells exposed to 2 cGy and were then irradiated with 4 Gy X-rays, they failed to show an increase in survival compared with cells directly irradiated with 4 Gy. However, a twofold reduction in the oncogenic transformation frequency was seen. CONCLUSIONS An adaptive dose of X-rays cancelled out the majority of the bystander effect produced by alpha-particles. For oncogenic transformation, but not cell survival, radioadaption can occur in unirradiated cells via a transmissible factor(s).
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Affiliation(s)
- S A Mitchell
- Center for Radiological Research, Columbia University, New York, NY 10032, USA
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O'Neill-Mehlenbacher A, Kilemade M, Elliott A, Mothersill C, Seymour C. Comparison of direct and bystander effects induced by ionizing radiation in eight fish cell lines. Int J Radiat Biol 2009; 83:593-602. [PMID: 17654101 DOI: 10.1080/09553000701481782] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE To determine bystander and direct effects of ionizing radiation on eight fish cell lines. MATERIALS AND METHODS Fish cell lines were irradiated at a range of doses from 0.5 - 5 Gy. The Irradiated Cell Conditioned Medium (ICCM) was then harvested and placed onto a HPV-G, reporter cell line as well as onto autologous fish cell lines. Cloning efficiency (CE) was the end point used. The HPV-G reporter cell line was chosen because this cell line is capable of transmitting and producing the bystander effect. RESULTS Four of the eight fish cell lines were clonogenic. These, with the exception of RTG-2 cells, showed increased CE when ICCM was tested on unirradiated autologous cells or on HPV-G cells. ICCM from RTG-2 cells reduced survival. The non-clonogenic cells ICCM tested on HPV-G all showed increased CE. CONCLUSIONS The results show that both bystander signal production and cellular response varies depending on the cell line and that in general signals from established fish cells do not produce death inducing bystander effects. Thus, the comparison of the effect from fish cell ICCM on autologous cells or HPV-G human cells allowed us to separate signal production from response. In almost all cases, for both non-clonogenic and clonogenic fish cell lines, the HPV-G recipient cell line showed an increase in percent survival compared to controls while the clonogenic fish cell lines do not appear to respond.
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Nuta O, Darroudi F. The impact of the bystander effect on the low-dose hypersensitivity phenomenon. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2008; 47:265-274. [PMID: 18189143 DOI: 10.1007/s00411-007-0145-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2007] [Accepted: 11/19/2007] [Indexed: 05/25/2023]
Abstract
The aim of this study was to investigate the possible relationship between the bystander effect and the low-dose hypersensitivity/increased radio-resistance phenomenon in BJ fibroblast cells taking as response criteria different end points of radiation damage such as cell survival, chromosomal damage (as detected by using micronucleus assay) and double strand breaks (DSBs) of the DNA. Although gamma-H2AX foci were observed in confluent bystander BJ cells, our data suggest that X-irradiation does not lead to a significant rate of DSBs in bystander cells. Thus, neither bystander effect induced unstable chromosomal aberrations nor bystander effect induced DSBs are sufficiently pronounced to explain the apparent relationship between bystander effect and low-dose hypersensitivity. The experiments described here suggest that the hyper-radiosensitivity phenomenon might be related to bystander factor induced cell inactivation in the low-dose region (lower than 1 Gy).
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Affiliation(s)
- Otilia Nuta
- Department of Toxicogenetics, Leiden University Medical Center, Einthovenweg 20, PO Box 9600, 2300 RC Leiden, The Netherlands.
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Dilmanian FA, Qu Y, Feinendegen LE, Peña LA, Bacarian T, Henn FA, Kalef-Ezra J, Liu S, Zhong Z, McDonald JW. Tissue-sparing effect of x-ray microplanar beams particularly in the CNS: is a bystander effect involved? Exp Hematol 2007; 35:69-77. [PMID: 17379090 DOI: 10.1016/j.exphem.2007.01.014] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Normal tissues, including the central nervous system, tolerate single exposures to narrow planes of synchrotron-generated x-rays (microplanar beams; microbeams) up to several hundred Gy. The repairs apparently involve the microvasculature and the glial system. We evaluate a hypothesis on the involvement of bystander effects in these repairs. METHODS Confluent cultures of bovine aortic endothelial cells were irradiated with three parallel 27-microm microbeams at 24 Gy. Rats' spinal cords were transaxially irradiated with a single microplanar beam, 270 microm thick, at 750 Gy; the dose distribution in tissue was calculated. RESULTS Within 6 hours following irradiation of the cell culture the hit cells died, apparently by apoptosis, were lost, and the confluency was maintained. The spinal cord study revealed a loss of oligodendrocytes, astrocytes, and myelin in 2 weeks, but by 3 months repopulation and remyelination was nearly complete. Monte Carlo simulations showed that the microbeam dose fell from the peak's 80% to 20% in 9 microm. CONCLUSIONS In both studies the repair processes could have involved "beneficial" bystander effects leading to tissue restoration, most likely through the release of growth factors, such as cytokines, and the initiation of cell-signaling cascades. In cell culture these events could have promoted fast disappearance of the hit cells and fast structural response of the surviving neighboring cells, while in the spinal cord study similar events could have been promoting angiogenesis to replace damaged capillary blood vessels, and proliferation, migration, and differentiation of the progenitor glial cells to produce new, mature, and functional glial cells.
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Affiliation(s)
- F Avraham Dilmanian
- Medical Department, Brookhaven National Laboratory, Upton, NY 11973-5000, USA.
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Chaudhry MA. Bystander effect: biological endpoints and microarray analysis. Mutat Res 2006; 597:98-112. [PMID: 16414093 DOI: 10.1016/j.mrfmmm.2005.04.023] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2005] [Revised: 04/13/2005] [Accepted: 04/22/2005] [Indexed: 05/06/2023]
Abstract
In cell populations exposed to ionizing radiation, the biological effects occur in a much larger proportion of cells than are estimated to be traversed by radiation. It has been suggested that irradiated cells are capable of providing signals to the neighboring unirradiated cells resulting in damage to these cells. This phenomenon is termed the bystander effect. The bystander effect induces persistent, long-term, transmissible changes that result in delayed death and neoplastic transformation. Because the bystander effect is relevant to carcinogenesis, it could have significant implications for risk estimation for radiation exposure. The nature of the bystander effect signal and how it impacts the unirradiated cells remains to be elucidated. Examination of the changes in gene expression could provide clues to understanding the bystander effect and could define the signaling pathways involved in sustaining damage to these cells. The microarray technology serves as a tool to gain insight into the molecular pathways leading to bystander effect. Using medium from irradiated normal human diploid lung fibroblasts as a model system we examined gene expression alterations in bystander cells. The microarray data revealed that the radiation-induced gene expression profile in irradiated cells is different from unirradiated bystander cells suggesting that the pathways leading to biological effects in the bystander cells are different from the directly irradiated cells. The genes known to be responsive to ionizing radiation were observed in irradiated cells. Several genes were upregulated in cells receiving media from irradiated cells. Surprisingly no genes were found to be downregulated in these cells. A number of genes belonging to extracellular signaling, growth factors and several receptors were identified in bystander cells. Interestingly 15 genes involved in the cell communication processes were found to be upregulated. The induction of receptors and the cell communication processes in bystander cells receiving media from irradiated cells supports the active involvement of these processes in inducing bystander effect.
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Affiliation(s)
- M Ahmad Chaudhry
- Department of Medical Laboratory and Radiation Sciences, College of Nursing and Health Sciences, University of Vermont, 302 Rowell Building, Burlington, VT 05405, USA.
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Roeske JC, Stinchcomb TG. The average number of alpha-particle hits to the cell nucleus required to eradicate a tumour cell population. Phys Med Biol 2006; 51:N179-86. [PMID: 16625028 DOI: 10.1088/0031-9155/51/9/n02] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Alpha-particle emitters are currently being considered for the treatment of micrometastatic disease. Based on in vitro studies, it has been speculated that only a few alpha-particle hits to the cell nucleus are considered lethal. However, such estimates do not consider the stochastic variations in the number of alpha-particle hits, energy deposited, or in the cell survival process itself. Using a tumour control probability (TCP) model for alpha-particle emitters, we derive an estimate of the average number of hits to the cell nucleus required to provide a high probability of eradicating a tumour cell population. In simulation studies, our results demonstrate that the average number of hits required to achieve a 90% TCP for 10(4) clonogenic cells ranges from 18 to 108. Those cells that have large cell nuclei, high radiosensitivities and alpha-particle emissions occurring primarily in the nuclei tended to require more hits. As the clinical implementation of alpha-particle emitters is considered, this type of analysis may be useful in interpreting clinical results and in designing treatment strategies to achieve a favourable therapeutic outcome.
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Affiliation(s)
- John C Roeske
- Department of Radiation and Cellular Oncology, University of Chicago, 5758 S. Maryland Ave., MC 9006, Chicago, IL 60637, USA.
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Zhou H, Ivanov VN, Gillespie J, Geard CR, Amundson SA, Brenner DJ, Yu Z, Lieberman HB, Hei TK. Mechanism of radiation-induced bystander effect: role of the cyclooxygenase-2 signaling pathway. Proc Natl Acad Sci U S A 2005; 102:14641-6. [PMID: 16203985 PMCID: PMC1253564 DOI: 10.1073/pnas.0505473102] [Citation(s) in RCA: 202] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The radiation-induced bystander effect is defined as "the induction of biological effects in cells that are not directly traversed by a charged particle but are in close proximity to cells that are." Although these bystander effects have been demonstrated with a variety of biological endpoints in both human and rodent cell lines (as well as in 3D tissue samples), the mechanism of the phenomenon is not known. Although gap junction communication and the presence of soluble mediator(s) are both known to play important roles in the bystander response, the precise signaling molecules have yet to be identified. By using the Columbia University charged particle beam in conjunction with a strip dish design, we show here that the cyclooxygenase-2 (COX-2, also known as prostaglandin endoperoxide synthase-2) signaling cascade plays an essential role in the bystander process. Treatment of bystander cells with NS-398, which suppresses COX-2 activity, significantly reduced the bystander effect. Because the critical event of the COX-2 signaling is the activation of the mitogen-activated protein kinase pathways, our finding that inhibition of the extracellular signal-related kinase phosphorylation suppressed bystander response further confirmed the important role of mitogen-activated protein kinase signaling cascade in the bystander process. These results provide evidence that the COX-2-related pathway, which is essential in mediating cellular inflammatory response, is the critical signaling link for the bystander phenomenon.
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Affiliation(s)
- Hongning Zhou
- Center for Radiological Research, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
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Moore SR, Marsden S, Macdonald D, Mitchell S, Folkard M, Michael B, Goodhead DT, Prise KM, Kadhim MA. Genomic Instability in Human Lymphocytes Irradiated with Individual Charged Particles: Involvement of Tumor Necrosis Factor α in Irradiated Cells but not Bystander Cells. Radiat Res 2005; 163:183-90. [PMID: 15658894 DOI: 10.1667/rr3298] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Exposure to ionizing radiation can increase the risk of cancer, which is often characterized by genomic instability. In environmental exposures to high-LET radiation (e.g. 222Ra), it is unlikely that many cells will be traversed or that any cell will be traversed by more than one alpha particle, resulting in an in vivo bystander situation, potentially involving inflammation. Here primary human lymphocytes were irradiated with precise numbers of 3He2+ ions delivered to defined cell population fractions, to as low as a single cell being traversed, resembling in vivo conditions. Also, we assessed the contribution to genomic instability of the pro-inflammatory cytokine tumor necrosis factor alpha (TNFA). Genomic instability was significantly elevated in irradiated groups (> or = two-fold over controls) and was comparable whether cells were traversed by one or two 3He2+ ions. Interestingly, substantial heterogeneity in genomic instability between experiments was observed when only one cell was traversed. Genomic instability was significantly reduced (60%) in cultures in which all cells were irradiated in the presence of TNFA antibody, but not when fractions were irradiated under the same conditions, suggesting that TNFA may have a role in the initiation of genomic instability in irradiated cells but not bystander cells. These results have implications for low-dose exposure risks and cancer.
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Affiliation(s)
- Stephen R Moore
- Radiation and Genome Stability Unit, Medical Research Council, Harwell, United Kingdom
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Kadhim MA, Moore SR, Goodwin EH. Interrelationships amongst radiation-induced genomic instability, bystander effects, and the adaptive response. Mutat Res 2004; 568:21-32. [PMID: 15530536 DOI: 10.1016/j.mrfmmm.2004.06.043] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2004] [Revised: 06/03/2004] [Accepted: 06/04/2004] [Indexed: 05/01/2023]
Abstract
Over the past two decades, our understanding of radiation biology has undergone a fundamental shift in paradigms away from deterministic "hit-effect" relationships and towards complex ongoing "cellular responses". These responses include now familiar, but still poorly understood, phenomena associated with radiation exposure such as bystander effects, genomic instability, and adaptive responses. All three have been observed at very low doses, and at time points far removed from the initial radiation exposure, and are extremely relevant for linear extrapolation to low doses; the adaptive response is particularly relevant when exposure is spread over a period of time. These are precisely the circumstances that are most relevant to understanding cancer risk associated with environmental and occupational radiation exposures. This review will provide a synthesis of the known, and proposed, interrelationships amongst low-dose cellular responses to radiation. It also will examine the potential importance of non-targeted cellular responses to ionizing radiation in setting acceptable exposure limits especially to low-LET radiations.
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Affiliation(s)
- Munira A Kadhim
- MRC Radiation and Genome Stability Unit, Harwell, Didcot, Oxfordshire OX110RD, UK.
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Affiliation(s)
- Carmel Mothersill
- Department of Medical Physics and Applied Radiation Science Unit, McMaster University, Hamilton, Ontario, Canada.
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Abstract
An understanding of the radiobiological effects of high-linear energy transfer (LET) radiation is essential for radiation protection and human risk assessment. Ever since the discovery of X-rays was made by Röntgen more than a century ago, it has always been accepted that the deleterious effects of ionizing radiation, such as mutation and carcinogenesis, are due mainly to direct damage to DNA. With the availability of a precision single-particle microbeam, it is possible to demonstrate, unequivocally, the presence of a bystander effect with many biological end points. These studies provide clear evidence that irradiated cells can induce a bystander mutagenic response in neighboring cells not directly traversed by alpha-particles, and that cell-cell communication processes play a critical role in mediating the bystander phenomenon. Following exposure to high-LET radiation, immortalized human bronchial (BEP2D) and breast (MCF-10F) cells have been shown to undergo malignant transformation through a series of successive steps, before becoming tumorigenic in nude mice. There is a progressive increase in genomic instability, determined either by gene amplification or allelic imbalance, with the highest incidence observed among established tumor cell lines, relative to transformed, nontumorigenic and control cell lines.
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Affiliation(s)
- Eric J Hall
- Center for Radiological Research, and The Herbert Irving Comprehensive Cancer Center, College of Physicians & Surgeons, Columbia University, 630 West 168th Street, New York, NY 10032, USA.
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