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• W2604634031 endingPage "160913" @default.
• W2604634031 startingPage "160913" @default.
• W2604634031 abstract "During vertebrate neural development, positional information is largely specified by extracellular morphogens. Their distribution, however, is very dynamic due to the multiple roles played by the same signals in the developing and adult neural tissue. This suggests that neural progenitors are able to modify their competence to respond to morphogen signalling and autonomously maintain positional identities after their initial specification. In this work, we take advantage of in vitro culture systems of mouse neural stem/progenitor cells (NSPCs) to show that NSPCs isolated from rostral or caudal regions of the mouse neural tube are differentially responsive to retinoic acid (RA), a pivotal morphogen for the specification of posterior neural fates. Hoxb genes are among the best known RA direct targets in the neural tissue, yet we found that RA could promote their transcription only in caudal but not in rostral NSPCs. Correlating with these effects, key RA-responsive regulatory regions in the Hoxb cluster displayed opposite enrichment of activating or repressing histone marks in rostral and caudal NSPCs. Finally, RA was able to strengthen Hoxb chromatin activation in caudal NSPCs, but was ineffective on the repressed Hoxb chromatin of rostral NSPCs. These results suggest that the response of NSPCs to morphogen signalling across the rostrocaudal axis of the neural tube may be gated by the epigenetic configuration of target patterning genes, allowing long-term maintenance of intrinsic positional values in spite of continuously changing extrinsic signals." @default.
• W2604634031 created "2017-04-14" @default.
• W2604634031 creator A5011375543 @default.
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• W2604634031 date "2017-04-01" @default.
• W2604634031 modified "2023-09-26" @default.
• W2604634031 title "Transcriptional response of<i>Hoxb</i>genes to retinoid signalling is regionally restricted along the neural tube rostrocaudal axis" @default.
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• W2604634031 doi "https://doi.org/10.1098/rsos.160913" @default.
• W2604634031 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5414248" @default.
• W2604634031 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28484611" @default.
• W2604634031 hasPublicationYear "2017" @default.
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