2001
Spatial distribution of selected genetic loci in nuclei of human leukemia cells after irradiation
JIRSOVÁ, Pavla; Stanislav KOZUBEK; Eva BÁRTOVÁ; Michal KOZUBEK; Emilie LUKÁŠOVÁ et al.Základní údaje
Originální název
Spatial distribution of selected genetic loci in nuclei of human leukemia cells after irradiation
Autoři
JIRSOVÁ, Pavla; Stanislav KOZUBEK; Eva BÁRTOVÁ; Michal KOZUBEK; Emilie LUKÁŠOVÁ; Alena GAŇOVÁ; Irena KOUTNÁ a Magdalena SKALNÍKOVÁ
Vydání
Radiation Research, 2001, 0033-7587
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10610 Biophysics
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.478
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14330/01:00004205
Organizační jednotka
Fakulta informatiky
UT WoS
Klíčová slova anglicky
DOUBLE-STRAND BREAKS; SACCHAROMYCES-CEREVISIAE; HOMOLOGOUS RECOMBINATION; CHROMOSOME
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 7. 5. 2010 16:38, prof. RNDr. Michal Kozubek, Ph.D.
Anotace
V originále
Fluorescence in situ hybridization (FISH) combined with high-resolution cytometry was used to determine the topographic characteristics of the centromeric heterochromatin (of the chromosomes 6, 8, 9, 17) and the tumor suppressor gene TP53 (which is located on chromosome 17) in cells of the human leukemia cell lines ML-1 and U937. Analysis was performed on cells that were either untreated or irradiated with gamma rays and incubated for different intervals after exposure. Compared to untreated cells, homologous centromeres and the TP53 genes were found closer to each other and also closer to the nuclear center 2 h after irradiation. The spatial relationship between genetic elements returned to that of the unirradiated controls during the next 2-3 h. Statistical evaluation of our experimental results shows that homologous centromeres and the homologous genes are positioned closer to each other 2 h after irradiation because they are localized closer to the center of the nucleus (probably due to more pronounced decondensation of the chromatin related to repair), This radial movement of genetic loci, however, is not connected,vith repair of DSBs by processes involving homologous recombination, because the angular distribution of homologous sequences remains random after irradiation.
Návaznosti
| GA202/98/P253, projekt VaV |
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| MSM 143300002, záměr |
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| NM15, projekt VaV |
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| VS97031, projekt VaV |
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