2003
Chromosomal territory segmentation in apoptotic cells
BÁRTOVÁ, Eva; Pavla JIRSOVÁ; Miloslava FOJTOVÁ; Karel SOUČEK; Stanislav KOZUBEK et al.Základní údaje
Originální název
Chromosomal territory segmentation in apoptotic cells
Autoři
Vydání
Cellular and Molecular Life Sciences, Bäsel, Birkhaeuser Verlag, 2003, 1420-682X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.995
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14330/03:00008143
Organizační jednotka
Fakulta informatiky
Klíčová slova anglicky
Chromosomal territory; Nuclear architecture; Apoptosis; DNA fragmentation
Změněno: 1. 9. 2003 14:26, prof. RNDr. Eva Bártová, Ph.D., DSc.
Anotace
V originále
The nuclear architecture of selected chromosomes in apoptotic nuclei of human leukemic cells K-562 and HL-60 was investigated in the presented paper. Etoposide and prolonged confluence were used for the induction of apoptosis. DAPI- as well as TUNEL- labelling of apoptotic nuclear bodies was combined with visualisation of chromosomal territories by the FISH technique. Simultaneous vital staining by Annexin V, PI and Hoechst 33342 was applied in order to distinguish apoptotic, necrotic and intact cell fraction of tested population. Our FISH analyses revealed that the 3D- structure of apoptotic nuclei as well as the 3D- structure of apoptotic bodies is preserved in formaldehyde fixed cells. High molecular weight DNA fragmentation was determined in apoptotic K-562 cells in contrast to oligonucleosomal cleavage observed in apoptotic HL-60 cells. In K-562 population, chromosomal territories were located separately either in one apoptotic body or to undergo disassembly into chromosomal segments dispersed into single and/or several apoptotic bodies. The apoptotic disorganisation of chromosomal territories was irregular, leading mainly to chromosomal segments of different sizes and, consequently, chromosomal disassembly was not observed at specific sites. Enhanced segmentation was also detected at selected centromeric regions. Sequential staining of the same apoptotic nuclei by the FISH and TUNEL techniques revealed that chromosomal territory segmentation precedes the formation of nuclear apoptotic bodies.
Návaznosti
| GA301/01/0186, projekt VaV |
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| IAA5004306, projekt VaV |
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| IAB5004102, projekt VaV |
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| IBS5004010, projekt VaV |
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| MSM 143300002, záměr |
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