Pilinska MA, Shemetun OV, Talan OA, Dibska OB, Kravchenko SM, Sholoiko VV. STUDY THE EFFECTS OF IONIZING RADIATION ON THE LEVEL OF CHROMOSOME INSTABILITY IN HUMAN SOMATIC CELLS DURING THE DEVELOPMENT OF
TUMOR-INDUCED BYSTANDER EFFECT.
Probl Radiac Med Radiobiol 2020;
25:353-361. [PMID:
33361846 DOI:
10.33145/2304-8336-2020-25-353-361]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Indexed: 01/20/2023]
Abstract
OBJECTIVE
to determine the impact of the irradiated in vitro blood cells from patients with B-cell chronic lymphocytic leukemia (CLL) on the level of chromosomal instability in peripheral blood lymphocytes (PBL) from healthy persons during the development of tumor-induced bystander effect.
MATERIALS AND METHODS
Separate and joint cultivation of PBL from healthy persons (cells-bystanders) together withblood cells from CLL patients irradiated in vitro at the G0 stage of the mitotic cycle by γ-quanta 137Cs in a dose of0.5 Gy 137Cs (cells-inductors) was used. For joint cultivation our own model system for co-cultivation of PBL fromindividuals of different sex, designed by us to investigate the bystander effects at the cytogenetic level was used.Traditional cytogenetic analysis of uniformly painted chromosomes with group karyotyping was performed. The frequency of chromosome aberrations in cells-inductors and cells-bystanders as the markers of chromosome instability were determined.
RESULTS
Found that at co-cultivation of PBL from healthy individuals with irradiated blood cells from CLL patientsthe middle group frequency of chromosome aberrations in the bystander cells (5.18 ± 0.51 per 100 metaphases,p < 0.001) was statistically significant higher than its background level determined at a separate cultivaton (1.52± 0.30 per 100 metaphases), and at co-cultivation with non-irradiated blood cells from CLL patients (3.31 ± 0.50 per100 metaphases, p < 0.01).
CONCLUSIONS
Co-cultivation of in vitro irradiated blood cells from CLL patients with PBL from healthy persons leadsto an increase in the level of chromosome instability in the bystander cells due to synergism between tumor-inducedand radiation-induced bystander effects.
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