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Chromosomal instability in the descendants of unirradiated surviving cells after α-particle irradiation
Open accessAbstract
We have demonstrated chromosomal instability in the clonal descendants of hemopoietic stem cells after irradiating murine bone marrow with α-particles. However, because cells that are irradiated by α-particles are defined by a Poisson distribution of individual particle traversals, there is an inevitable proportion of unirradiated cells in the surviving population. The calculated expected proportions of irradiated and nonirradiated cells indicate that the number of clonogenic cells transmitting chromosomal instability is greater than the number expected to be hit and survive. To investigate further this discrepancy, we studied the effects of interposing a grid between the cells and the α-particle source so that the surviving population consists predominantly of untraversed stem cells. Comparison with the same irradiation conditions without the grid reveals that the same level of instability is induced. The data confirm that α-particles induce chromosomal instability but instability is demonstrated in the progeny of nonirradiated stem cells and must be due to unexpected interactions between irradiated and nonirradiated cells. This untargeted effect has important implications for mechanistic studies of radiation action and for assessment of radiation risk.
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Citations
Cited by
Morgan, W. F. (2003) · Radiation Research · doi:10.1667/0033-7587(2003)159[0567:nadeoe]2.0.co;2 · Cited by 649
Azzam, E. I., de Toledo, S. M., Gooding, T., & Little, J. B. (1998) · Radiation Research · doi:10.2307/3579865 · Cited by 521
Radiation-Induced Bystander Effects: Past History and Future Directions
Mothersill, C., & Seymour, C. (2001) · Radiation Research · doi:10.1667/0033-7587(2001)155[0759:ribeph]2.0.co;2 · Cited by 507
Induction of a bystander mutagenic effect of alpha particles in mammalian cells
Zhou, H., Randers-Pehrson, G., Waldren, C. A., Vannais, D., Hall, E. J., & Hei, T. K. (2000) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.030420797 · Cited by 477
Space Radiation Cancer Risks and Uncertainties for Mars Missions
Cucinotta, F. A., Schimmerling, W., Wilson, J. W., Peterson, L. E., Badhwar, G. D., Saganti, P. B., & Dicello, J. F. (2001) · Radiation Research · doi:10.1667/0033-7587(2001)156[0682:srcrau]2.0.co;2 · Cited by 328
Metadata
- Authors
- Lorimore, S. A., Kadhim, M. A., Pocock, D. A., Papworth, D., Stevens, D. L., Goodhead, D. T., & Wright, E. G.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1998-05-12
- Volume
- 95
- Issue
- 10
- Pages
- 5730-5733
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1965620353
- Cited by
- 303
- References
- 0
- FWCI
- 18.18
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Chromosomal instability in the descendants of unirradiated surviving cells after α-particle irradiation. https://app.cochat.ai/papers/10.1073/pnas.95.10.5730
- The paper
- Lorimore, S. A., Kadhim, M. A., Pocock, D. A., Papworth, D., Stevens, D. L., Goodhead, D. T., & Wright, E. G. (1998). Chromosomal instability in the descendants of unirradiated surviving cells after α-particle irradiation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.95.10.5730
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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