2005
Nuclear levels and patterns of histone H3 modification and HP1 proteins after inhibition of histone deacetylases
BÁRTOVÁ, Eva; J. PACHERNÍK; Andrea HARNIČAROVÁ; A. KOVAŘÍK; M. KOVAŘÍKOVÁ et al.Základní údaje
Originální název
Nuclear levels and patterns of histone H3 modification and HP1 proteins after inhibition of histone deacetylases
Název česky
Jaderné úrovně a vzory modifikací histonů H3 a proteinů HP1 po potlačení deacetyláz histonů
Autoři
BÁRTOVÁ, Eva; J. PACHERNÍK; Andrea HARNIČAROVÁ; A. KOVAŘÍK; M. KOVAŘÍKOVÁ; Jiřina HOFMANOVÁ; Magdalena SKALNÍKOVÁ; Michal KOZUBEK a Stanislav KOZUBEK
Vydání
Journal of Cell Science, Cambridge, Company of Biologists Ltd. 2005, 0021-9533
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 6.543
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14330/05:00012958
Organizační jednotka
Fakulta informatiky
UT WoS
Klíčová slova anglicky
histone dimethylation; histone acetylation; HP1 proteins; HDAC inhibitors; nuclear periphery
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 7. 5. 2010 15:20, prof. RNDr. Michal Kozubek, Ph.D.
V originále
The effects of the histone deacetylase inhibitors (HDACi) trichostatin A (TSA) and sodium butyrate (NaBt) were studied in A549, HT29 and FHC human cell lines. Global histone hyperacetylation, leading to decondensation of interphase chromatin, was characterized by an increase in H3(K9) and H3(K4) dimethylation and H3(K9) acetylation. The levels of all isoforms of heterochromatin protein, HP1, were reduced after HDAC inhibition. The observed changes in the protein levels were accompanied by changes in their interphase patterns. In control cells, H3(K9) acetylation and H3(K4) dimethylation were substantially reduced to a thin layer at the nuclear periphery, whereas TSA and NaBt caused the peripheral regions to become intensely acetylated at H3(K9) and dimethylated at H3(K4). The dispersed pattern of H3(K9) dimethylation was stable even at the nuclear periphery of HDACi-treated cells. After TSA and NaBt treatment, the HP1 proteins were repositioned more internally in the nucleus, being closely associated with interchromatin compartments, while centromeric heterochromatin was relocated closer to the nuclear periphery. These findings strongly suggest dissociation of HP1 proteins from peripherally located centromeres in a hyperacetylated and H3(K4) dimethylated environment. We conclude that inhibition of histone deacetylases caused dynamic reorganization of chromatin in parallel with changes in its epigenetic modifications.
Česky
Byly studovány jaderné úrovně a vzory modifikací histonů H3 a proteinů HP1 po potlačení deacetyláz histonů.
Návaznosti
| GA202/04/0907, projekt VaV |
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| GP202/03/D033, projekt VaV |
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| IAA5004306, projekt VaV |
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| LC535, projekt VaV |
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| 1A8241, projekt VaV |
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