2014
Mutation frequency dynamics in HPRT locus in culture adapted hESCs and iPSCs correspond to their differentiated counterparts
KRUTÁ, Miriama; Monika ŠENEKLOVÁ; Jan RAŠKA; Anton SALYKIN; Lenka ZERZÁNKOVÁ et al.Základní údaje
Originální název
Mutation frequency dynamics in HPRT locus in culture adapted hESCs and iPSCs correspond to their differentiated counterparts
Autoři
KRUTÁ, Miriama; Monika ŠENEKLOVÁ; Jan RAŠKA; Anton SALYKIN; Lenka ZERZÁNKOVÁ; Martin PEŠL; Eva BÁRTOVÁ; Michal FRANEK; Aneta BAUMEISTEROVÁ; Stanislava KOŠKOVÁ; Kai J. NEELSEN; Aleš HAMPL; Petr DVOŘÁK a Vladimír ROTREKL
Vydání
Stem Cells and Development, Mary Ann Liebert, Inc. 2014, 1547-3287
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 3.727
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14110/14:00073651
Organizační jednotka
Lékařská fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
mutation frequency; human embryonic stem cells; induced pluripotent stem cells; hypoxanthine phosphoribosyltransferase; base excision repair; apurinic/apyrimidinic endonuclease
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 11. 2014 14:18, Ing. Mgr. Věra Pospíšilíková
Anotace
V originále
The genomic destabilization associated with the adaptation of human embryonic stem cells (hESCs) to culture conditions or the reprogramming of induced pluripotent stem cells (iPSCs) increases the risk of tumorigenesis upon the clinical use of these cells and decreases their value as a model for cell biology studies. Base excision repair (BER), a major genomic integrity maintenance mechanism, has been shown to fail during hESC adaptation. Here, we show that the increase in the mutation frequency (MF) caused by the inhibition of BER was similar to that caused by the hESC adaptation process. The increase in MF reflected the failure of DNA maintenance mechanisms and the subsequent increase in MF rather than being due solely to the accumulation of mutants over a prolonged period, as was previously suggested. The increase in the ionizing radiation-induced MF in adapted hESCs exceeded the induced MF in non-adapted hESCs and differentiated cells. Unlike hESCs, the overall DNA maintenance in iPSCs, which was reflected by the MF, was similar to that in differentiated cells regardless of the time spent in culture and despite the upregulation of several genes responsible for genome maintenance during the reprogramming process. Taken together, our results suggest that the changes in BER activity during the long-term cultivation of hESCs increase the mutagenic burden, whereas neither reprogramming nor long-term propagation in culture changes the MF in iPSCs.
Návaznosti
| EE2.3.30.0009, projekt VaV |
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| GA13-19910S, projekt VaV |
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| GBP302/12/G157, projekt VaV |
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| MSM0021622430, záměr |
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