PUBLICATION
Morphine delays neural stem cells differentiation by facilitating Nestin overexpression
- Authors
- Jimenez-Gonzalez, A., García-Concejo, A., León-Lobera, F., Rodriguez, R.E.
- ID
- ZDB-PUB-171108-5
- Date
- 2017
- Source
- Biochimica et biophysica acta 1862(3): 474-484 (Journal)
- Registered Authors
- Rodriguez, Raquel E.
- Keywords
- Central nervous system, Development, Epigenetics, Morphine, Stem cell
- MeSH Terms
-
- Acetylation/drug effects
- Animals
- Animals, Genetically Modified
- Binding Sites
- CpG Islands/drug effects
- DNA Methylation/drug effects
- E1A-Associated p300 Protein/physiology
- Embryo, Nonmammalian/drug effects
- Gene Expression Regulation, Developmental/drug effects*
- Genes, Reporter
- Histones/metabolism
- Humans
- Mice
- Morphine/pharmacology*
- Naloxone/pharmacology
- Nanog Homeobox Protein/biosynthesis
- Nanog Homeobox Protein/genetics
- Nestin/biosynthesis*
- Nestin/genetics
- Neural Stem Cells/drug effects*
- Neural Stem Cells/metabolism
- Neurogenesis/drug effects*
- Octamer Transcription Factor-3/biosynthesis
- Octamer Transcription Factor-3/genetics
- Protein Processing, Post-Translational/drug effects
- SOX Transcription Factors/biosynthesis
- SOX Transcription Factors/genetics
- Up-Regulation/drug effects
- Zebrafish Proteins*/biosynthesis
- Zebrafish Proteins*/genetics
- PubMed
- 29111275 Full text @ Biochim. Biophys. Acta
Citation
Jimenez-Gonzalez, A., García-Concejo, A., León-Lobera, F., Rodriguez, R.E. (2017) Morphine delays neural stem cells differentiation by facilitating Nestin overexpression. Biochimica et biophysica acta. 1862(3):474-484.
Abstract
Background Morphine is used as an analgesic although it causes important secondary effects. These effects are triggered by several mechanisms leading to the dysregulation of gene expression. Here we aimed to study these alterations on neural stem cells (NSC) during CNS development.
Methods AB strain and tg nestin:GFP zebrafish embryos, zebrafish primary neuron culture and mouse embryonic stem cells were used to assess the effect of morphine by qPCR, time lapse microscopy and western blot. ChIP-qPCR and bisulfite conversion assay were performed to determine the changes exerted by morphine in a Nestin candidate enhancer.
Results Morphine increases GFP in nestin:GFP embryos and overexpresses the NSC marker Nestin. Morphine also exerts a hyperacetylation effect on H3K27 and decreases DNA methylation within a region located 18 Kb upstream nestin transcription starting site. Here, a binding site for the transcription factor complex Sox2/Oct4/Nanog was predicted. These factors are also upregulated by morphine. Besides, morphine increases the histone acetyl transferase p300. The inhibition of p300 activity decreases Nestin.
Conclusions Morphine facilitates Nestin increase by several mechanisms which include hyperacetylation of H3K27, decreased DNA methylation and the overexpression of the transcription factors sox2, oct4 and nanog. It has also been demonstrated that nestin levels depend on p300 activity. The facilitated Nestin expression delays the normal differentiation of neural stem cells.
General significance The present work provides novel evidence of the effects induced by morphine in the normal differentiation of NSCs, altering Nestin through changes on p300, H3K27ac, DNA methylation and Oct4, Sox2, and Nanog.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping