2019
Ligase 3-mediated end-joining maintains genome stability of human embryonic stem cells
KOHUTOVÁ, Aneta; Jan RAŠKA; Miriama KRUTÁ; Monika ŠENEKLOVÁ; Tomáš BÁRTA et al.Základní údaje
Originální název
Ligase 3-mediated end-joining maintains genome stability of human embryonic stem cells
Autoři
KOHUTOVÁ, Aneta; Jan RAŠKA; Miriama KRUTÁ; Monika ŠENEKLOVÁ; Tomáš BÁRTA; Petr FOJTÍK; Tereza JURÁKOVÁ; Christi A. WALTER; Aleš HAMPL; Petr DVOŘÁK a Vladimír ROTREKL
Vydání
Faseb Journal, BETHESDA, FEDERATION AMER SOC EXP BIOL, 2019, 0892-6638
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.966
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14110/19:00108021
Organizační jednotka
Lékařská fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
base excision repair; PARP1; 53BP1; pluripotent stem cells; alternative DNA end-joining
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 4. 3. 2020 14:05, Mgr. Tereza Miškechová
Anotace
V originále
Maintenance of human embryonic stem cells (hESCs) with stable genome is important for their future use in cell replacement therapy and disease modeling. Our understanding of the mechanisms maintaining genomic stability of hESC and our ability to modulate them is essential in preventing unwanted mutation accumulation during their in vitro cultivation. In this study, we show the DNA damage response mechanism in hESCs is composed of known, yet unlikely components. Clustered oxidative base damage is converted into DNA double-strand breaks (DSBs) by base excision repair (BER) and then quickly repaired by ligase (Lig)3-mediated end-joining (EJ). If there is further induction of clustered oxidative base damage by irradiation, then BER-mediated DSBs become essential in triggering the checkpoint response in hESCs. hESCs limit the mutagenic potential of Lig3-mediated EJ by DNA break end protection involving p53 binding protein 1 (53BP1), which results in fast and error-free microhomology-mediated repair and a low mutant frequency in hESCs. DSBs in hESCs are also repaired via homologous recombination (HR); however, DSB overload, together with massive end protection by 53BP1, triggers competition between error-free HR and mutagenic nonhomologous EJ.-Kohutova, A., Raska, J., Kruta, M., Seneklova, M., Barta, T., Fojtik, P., Jurakova, T., Walter, C. A., Hampl, A., Dvorak, P., Rotrekl, V. Ligase 3-mediated end-joining maintains genome stability of human embryonic stem cells.
Návaznosti
| GBP302/12/G157, projekt VaV |
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| LQ1601, projekt VaV |
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| MUNI/A/1087/2018, interní kód MU |
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| MUNI/C/0967/2013, interní kód MU |
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