2018
Irradiation by gamma-rays reduces the level of H3S10 phosphorylation and weakens the G2 phase-dependent interaction between H3S10 phosphorylation and gamma H2AX
BÁRTOVÁ, Eva, Gabriela LOCHMANOVÁ, Soňa LEGARTOVÁ, Jana SUCHÁNKOVÁ, Radek FEDR et. al.Základní údaje
Originální název
Irradiation by gamma-rays reduces the level of H3S10 phosphorylation and weakens the G2 phase-dependent interaction between H3S10 phosphorylation and gamma H2AX
Autoři
BÁRTOVÁ, Eva (203 Česká republika), Gabriela LOCHMANOVÁ (203 Česká republika, domácí), Soňa LEGARTOVÁ (203 Česká republika), Jana SUCHÁNKOVÁ (203 Česká republika), Radek FEDR (203 Česká republika), Jana KREJČÍ (203 Česká republika) a Zbyněk ZDRÁHAL (203 Česká republika, garant, domácí)
Vydání
Biochimie, Elsevier, 2018, 0300-9084
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Francie
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 3.362
Kód RIV
RIV/00216224:14740/18:00101337
Organizační jednotka
Středoevropský technologický institut
UT WoS
000448032300011
Klíčová slova anglicky
Mass spectrometry; Histones H3 and H4; gamma H2AX; DNA damage; Embryonic stem cells; Epigenetics
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 3. 2019 13:39, Mgr. Pavla Foltynová, Ph.D.
Anotace
V originále
Histone posttranslational modifications regulate diverse nuclear functions, including DNA repair. Here, we use mass spectrometry, western blotting, immunohistochemistry and advanced confocal microscopy in order to show radiation-specific changes in the histone signature. We studied wild-type mouse embryonic stem cells (mESCs) and mESCs with a depletion of histone deacetylase 1 (HDAC1), which plays a role in DNA repair. Irradiation by gamma-rays increased the S139 phosphorylation of histone H2AX but reduced the level of the H3K9-R17 peptide, which contains S10 phosphorylation (H3S10ph). On an individual cellular level, H3S10ph was low in highly gamma H2AX-positive UV laser-induced DNA lesions, and this nuclear distribution pattern was not changed by HDAC1 depletion. Despite this fact, spontaneous gamma H2AX-positive DNA lesions colocalized with large H3S10ph-positive nuclear bodies that appear in the G2 phase of the cell cycle. Similarly, by FLIM-FRET analysis, we observed an interaction between H3S10ph and gamma H2AX in the G2 phase. However, this interaction was reduced when cells were exposed to gamma-rays. A mutual link between H3S10ph and gamma H2AX was not observed in the G1 phase of the cell cycle. Together, our data show that despite the fact that H3S10ph is not directly involved in DNA repair, a decrease in H3S10 phosphorylation and weakened interaction between H3S10ph and gamma H2AX is a result of radiation-induced damage of the genome. In this case, gamma-irradiation also decreased the number of cells in the G1 phase, characterized by no interaction between H3S10ph and gamma H2AX. (C) 2018 Elsevier B.V. and Societe Francaise de Biochimie et Biologie Moleculaire (SFBBM).
Návaznosti
GA18-07384S, projekt VaV |
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LM2015043, projekt VaV |
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LQ1601, projekt VaV |
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