PUBLICATION

Conservation of Zebrafish MicroRNA-145 and Its Role during Neural Crest Cell Development

Authors
Steeman, T.J., Rubiolo, J.A., Sánchez, L.E., Calcaterra, N.B., Weiner, A.M.J.
ID
ZDB-PUB-210703-35
Date
2021
Source
Genes   12(7): (Journal)
Registered Authors
Calcaterra, Nora
Keywords
embryonic development, gene regulatory network, microRNA, neural crest
MeSH Terms
  • Animals
  • Cell Differentiation
  • Craniofacial Abnormalities/etiology
  • Craniofacial Abnormalities/metabolism
  • Craniofacial Abnormalities/pathology
  • Gene Expression Regulation, Developmental*
  • Gene Regulatory Networks*
  • MicroRNAs/genetics*
  • Neural Crest/cytology*
  • Neural Crest/metabolism
  • Organogenesis*
  • Pigmentation Disorders/etiology
  • Pigmentation Disorders/metabolism
  • Pigmentation Disorders/pathology
  • Zebrafish/genetics
  • Zebrafish/growth & development*
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism*
PubMed
34209401 Full text @ Genes (Basel)
Abstract
The neural crest is a multipotent cell population that develops from the dorsal neural fold of vertebrate embryos in order to migrate extensively and differentiate into a variety of tissues. A number of gene regulatory networks coordinating neural crest cell specification and differentiation have been extensively studied to date. Although several publications suggest a common role for microRNA-145 (miR-145) in molecular reprogramming for cell cycle regulation and/or cellular differentiation, little is known about its role during in vivo cranial neural crest development. By modifying miR-145 levels in zebrafish embryos, abnormal craniofacial development and aberrant pigmentation phenotypes were detected. By whole-mount in situ hybridization, changes in expression patterns of col2a1a and Sry-related HMG box (Sox) transcription factors sox9a and sox9b were observed in overexpressed miR-145 embryos. In agreement, zebrafish sox9b expression was downregulated by miR-145 overexpression. In silico and in vivo analysis of the sox9b 3'UTR revealed a conserved potential miR-145 binding site likely involved in its post-transcriptional regulation. Based on these findings, we speculate that miR-145 participates in the gene regulatory network governing zebrafish chondrocyte differentiation by controlling sox9b expression.
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