2016
The stabilization of hypoxia inducible factor modulates differentiation status and inhibits the proliferation of mouse embryonic stem cells
BINÓ, Lucia, Jan KUČERA, Kateřina ŠTEFKOVÁ, Lenka ŠVIHÁLKOVÁ ŠINDLEROVÁ, Martina LÁNOVÁ et. al.Základní údaje
Originální název
The stabilization of hypoxia inducible factor modulates differentiation status and inhibits the proliferation of mouse embryonic stem cells
Autoři
BINÓ, Lucia (703 Slovensko, domácí), Jan KUČERA (203 Česká republika, domácí), Kateřina ŠTEFKOVÁ (203 Česká republika, domácí), Lenka ŠVIHÁLKOVÁ ŠINDLEROVÁ (203 Česká republika), Martina LÁNOVÁ (203 Česká republika, domácí), Jana KUDOVÁ (203 Česká republika, domácí), Lukáš KUBALA (203 Česká republika, garant) a Jiří PACHERNÍK (203 Česká republika, domácí)
Vydání
Chemico-Biological Interactions, Clare, Elsevier Ireland Ltd. 2016, 0009-2797
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
Genetika a molekulární biologie
Stát vydavatele
Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 3.143
Kód RIV
RIV/00216224:14310/16:00089311
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000369152000022
Klíčová slova anglicky
DMOG; Embryonic stem cells; HIF-1; Hypoxia; JNJ-42041935; Prolyl hydroxylase
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 14. 4. 2017 15:40, Ing. Andrea Mikešková
Anotace
V originále
Hypoxic conditions are suggested to affect the differentiation status of stem cells (SC), including embryonic stem cells (ESC). Hypoxia inducible factor (HIF) is one of the main intracellular molecules responsible for the cellular response to hypoxia. Hypoxia stabilizes HIF by inhibiting the activity of HIF prolyl-hydroxylases (PHD), which are responsible for targeting HIF-alpha subunits for proteosomal degradation. To address the impact of HIF stabilization on the maintenance of the stemness signature of mouse ESC (mESC), we tested the influence of the inhibition of PHDs and hypoxia (1% O2 and 5% O2) on spontaneous ESC differentiation triggered by leukemia inhibitory factor withdrawal for 24 and 48 h. The widely used panhydroxylase inhibitor dimethyloxaloylglycine (DMOG) and PHD inhibitor JNJ-42041935 (JNJ) with suggested higher specificity towards PHDs were employed. Both inhibitors and both levels of hypoxia significantly increased HIF-1alpha and HIF-2alpha protein levels and HIF transcriptional activity in spontaneously differentiating mESC. This was accompanied by significant downregulation of cell proliferation manifested by the complete inhibition of DNA synthesis and partial arrest in the S phase after 48 h. Further, HIF stabilization enhanced downregulation of the expressions of some pluripotency markers (OCT-4, NANOG, ZFP-42, TNAP) in spontaneously differentiating mESC. However, at the same time, there was also a significant decrease in the expression of some genes selected as markers of cell differentiation (e.g. SOX1, BRACH T, ELF5). In conclusion, the short term stabilization of HIF mediated by the PHD inhibitors JNJ and DMOG and hypoxia did not prevent the spontaneous loss of pluripotency markers in mESC. However, it significantly downregulated the proliferation of these cells.