Spectrum of TP53 Sequence Variants on Chronically Exposed Humans
- Autores: Nikiforov V.S.1,2, Korechenkova A.V.1, Akleyev A.V.1,2
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Afiliações:
- Federal State Government-Funded Institution of Science Urals Research Center for Radiation Medicine of the Federal Medical Biological Agency
- Chelyabinsk State University
- Edição: Volume 64, Nº 5 (2024)
- Páginas: 465–472
- Seção: Radiation Genetics
- URL: https://journals.rcsi.science/0869-8031/article/view/273901
- DOI: https://doi.org/10.31857/S0869803124050028
- EDN: https://elibrary.ru/LNXKON
- ID: 273901
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Resumo
It is known that ionizing radiation can damage the genetic apparatus of a cell not only through direct exposure, but also through the induction of oxidative stress. Thus, oxidation of guanine (G) nitrogenous base by oxidative stress products can result in G:C>T:A and G:C>C:G type transversions in the tumor growth suppressor gene TR53. Somatic and inherited variants of the TP53 gene, in its turn, are of great importance in the development of malignant neoplasms. Therefore, the aim of the study was to analyze the G:C>T:A and G:C>C:G transversions of the TP53 gene in peripheral blood cells of individuals affected by chronic low-dose rate exposure. The paper presents the results of the analysis of the spectrum of TP53 gene sequence variants based on G:C>T:A and G:C>C:G transversions in peripheral blood cells of the Techa riverside residents of the Chelyabinsk and Kurgan Oblasts, affected by chronic low-dose rate exposure in the 1950s. The range of individual values of the accumulated absorbed dose to red bone marrow due to external gamma radiation and ⁹⁰Sr ranged from 2.1 to 2742.0 mGy (mean value – 605.4 ± 191.9 mGy (M ± SE)). As a result of the study, 7 different variants of the TP53 gene based on the G:C>T:A and G:C>C:G transversions, which are single nucleotide replacements, were identified in the examined individuals. All detected variants were present in the IARC TP53 Database and had no clinical significance as “pathogenic” or “probably pathogenic”. Differences in the frequencies of carriers of detected TP53 gene variants between the comparison group and the main group did not reach a statistically significant level/ were not statistically significant.
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Sobre autores
Vladislav Nikiforov
Federal State Government-Funded Institution of Science Urals Research Center for Radiation Medicine of the Federal Medical Biological Agency; Chelyabinsk State University
Autor responsável pela correspondência
Email: nikiforovx@mail.ru
ORCID ID: 0000-0002-6685-1823
Rússia, Chelyabinsk; Chelyabinsk
Anastasiya Korechenkova
Federal State Government-Funded Institution of Science Urals Research Center for Radiation Medicine of the Federal Medical Biological Agency
Email: korechenkova@urcrm.ru
ORCID ID: 0009-0008-6588-3517
Rússia, Chelyabinsk
Alexander Akleyev
Federal State Government-Funded Institution of Science Urals Research Center for Radiation Medicine of the Federal Medical Biological Agency;Chelyabinsk State University
Email: akleyev@urcrm.ru
ORCID ID: 0000-0003-2583-5808
Rússia, Chelyabinsk; Chelyabinsk
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