The effect of dual inhibition of Ras-MEK-ERK and GSK3β pathways on development of in vitro cultured rabbit embryos

Dual inhibition (2i) of Ras-MEK-ERK and GSK3β pathways enables the derivation of embryo stem cells (ESCs) from refractory mouse strains and, for permissive strains, allows ESC derivation with no external protein factor stimuli involvement. In addition, blocking of ERK signalling in 8-cell-stage mous...

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Veröffentlicht in:Zygote (Cambridge) 2020-06, Vol.28 (3), p.183-190
Hauptverfasser: Bontovics, Babett, Maraghechi, Pouneh, Lázár, Bence, Anand, Mahek, Németh, Kinga, Fábián, Renáta, Vašíček, Jaromír, Makarevich, Alexander V, Gócza, Elen, Chrenek, Peter
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container_title Zygote (Cambridge)
container_volume 28
creator Bontovics, Babett
Maraghechi, Pouneh
Lázár, Bence
Anand, Mahek
Németh, Kinga
Fábián, Renáta
Vašíček, Jaromír
Makarevich, Alexander V
Gócza, Elen
Chrenek, Peter
description Dual inhibition (2i) of Ras-MEK-ERK and GSK3β pathways enables the derivation of embryo stem cells (ESCs) from refractory mouse strains and, for permissive strains, allows ESC derivation with no external protein factor stimuli involvement. In addition, blocking of ERK signalling in 8-cell-stage mouse embryos leads to ablation of GATA4/6 expression in hypoblasts, suggesting fibroblast growth factor (FGF) dependence of hypoblast formation in the mouse. In human, bovine or porcine embryos, the hypoblast remains unaffected or displays slight-to-moderate reduction in cell number. In this study, we demonstrated that segregation of the hypoblast and the epiblast in rabbit embryos is FGF independent and 2i treatment elicits only a limited reinforcement in favour of OCT4-positive epiblast populations against the GATA4-/6-positive hypoblast population. It has been previously shown that TGFβ/Activin A inhibition overcomes the pervasive differentiation and inhomogeneity of rat iPSCs, rat ESCs and human iPSCs while prompting them to acquire naïve properties. However, TGFβ/Activin A inhibition, alone or together with Rho-associated, coiled-coil containing protein kinase (ROCK) inhibition, was not compatible with the viability of rabbit embryos according to the ultrastructural analysis of preimplantation rabbit embryos by electron microscopy. In rabbit models ovulation upon mating allows the precise timing of progression of the pregnancy. It produces several embryos of the desired stage in one pregnancy and a relatively short gestation period, making the rabbit embryo a suitable model to discover the cellular functions and mechanisms of maintenance of pluripotency in embryonic cells and the embryo-derived stem cells of other mammals.
doi_str_mv 10.1017/S0967199419000753
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identifier ISSN: 0967-1994
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subjects Ablation
Activin
Amides - pharmacology
Animal models
Animals
Antibodies
Benzamides - pharmacology
Cell number
Coils
Derivation
Diphenylamine - analogs & derivatives
Diphenylamine - pharmacology
Electron microscopy
Embryo Culture Techniques
Embryo, Mammalian - cytology
Embryo, Mammalian - embryology
Embryo, Mammalian - metabolism
Embryonic Development - drug effects
Embryos
Enzyme Inhibitors - pharmacology
Extracellular signal-regulated kinase
Female
Fibroblast growth factors
Gene expression
Germ Layers - cytology
Germ Layers - drug effects
Germ Layers - metabolism
Gestation
Glycogen Synthase Kinase 3 beta - antagonists & inhibitors
Glycogen Synthase Kinase 3 beta - metabolism
Growth factors
Inhibitory postsynaptic potentials
Inhomogeneity
Kinases
Laboratories
MAP Kinase Signaling System - drug effects
Mitogen-Activated Protein Kinase Kinases - antagonists & inhibitors
Mitogen-Activated Protein Kinase Kinases - metabolism
Oct-4 protein
Ovulation
Pluripotency
Pregnancy
Protein kinase
Proteins
Pyrazoles - pharmacology
Pyridines - pharmacology
Pyrimidines - pharmacology
Rabbits
Ras protein
ras Proteins - antagonists & inhibitors
ras Proteins - metabolism
Signal transduction
Stem cell transplantation
Stem cells
Thiosemicarbazones - pharmacology
title The effect of dual inhibition of Ras-MEK-ERK and GSK3β pathways on development of in vitro cultured rabbit embryos
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