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Correlation of Radiation Response of Cervical Cancer Stem Cells with Their Initial Number before Treatment and Molecular Genetic Features of Papillomavirus Infection

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The proportion of CD44+CD24low cancer stem cells (CSC) was determined in cervical scrapings of 41 patients with squamous cell carcinoma of the uterine cervix before treatment and after irradiation in a total focal dose of 10 Gy. The relationship of quantitative changes in the CSC population with such parameters of papillomavirus infection as genotype, viral load, and physical status of HPV DNA (the absence or presence of HPV DNA integration into the cell genome and the degree of integration) was studied. Single- and multi-factor analysis revealed 2 independent indicators affecting the radiation response of CSC: initial number of these cells before treatment and physical status of HPV DNA. The increase in the CSC proportion after radiation exposure was observed 4.5-fold more often in patients with an initially low proportion of CSC (<3%) than that in other patients (p=0.001). The CSC proportion increased by on average 3% after irradiation in patients with complete integration of HPV 16/18 DNA and decreased by 3.8 % in patients with partial integration or no integration (p=0.03).

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Authors and Affiliations

  1. A. F. Tsyb Medical Radiological Research Center — Affiliated Branch of National Medical Research Centre of Radiology, Ministry of Health of the Russian Federation, Obninsk, Russia

    I. A. Zamulaeva, E. I. Selivanova, V. I. Kiseleva, O. N. Matchuk, L. I. Krikunova, L. S. Mkrtchyan & A. D. Kaprin

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  1. I. A. Zamulaeva
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  2. E. I. Selivanova
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  3. V. I. Kiseleva
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  4. O. N. Matchuk
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  5. L. I. Krikunova
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  6. L. S. Mkrtchyan
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  7. A. D. Kaprin
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Correspondence to I. A. Zamulaeva.

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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 170, No. 8, pp. 215-220, August, 2020

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Zamulaeva, I.A., Selivanova, E.I., Kiseleva, V.I. et al. Correlation of Radiation Response of Cervical Cancer Stem Cells with Their Initial Number before Treatment and Molecular Genetic Features of Papillomavirus Infection. Bull Exp Biol Med 170, 241–245 (2020). https://doi.org/10.1007/s10517-020-05043-w

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  • DOI: https://doi.org/10.1007/s10517-020-05043-w

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