title: [Expression of connexin 43 gene during early dental development in zebra fish].
abstract: OBJECTIVE
  This study aims to investigate the expression of connexin 43 (cx43) gene during early development in zebra fish and provide a foundation for further research of cx43 gene in tooth development.
  
  
  METHODS
  Total RNA was extracted within 72 h after fertilization of zebra fish embryos and then reversed transcribed to generate the cDNA library. The specific fragments of the cx43 gene were then cloned and connected to the PGEMT vector. After confirming the constructed plasmid, the corresponding RNA polymerase was chosen, and the digoxin-labeled anti-sense mRNA probe of cx43 was synthesized in vitro. The cx43 gene expression of zebra fish indifferent stages was carried out by in situ hybridization. The relationship of the cx43 gene expression and anatomy of the pharyngeal teeth were compared by alizarin red staining.
  
  
  RESULTS
  The mRNA antisense probe of cx43 was acquired. The positive signal of sepia was observed in the different stages of zebra fish pharyngeal teeth after fertilization. After fertilization for 9 days, the expression site of cx43 in situ hybridization was overlapped in accordance with the anatomical site of the pharyngeal teeth.
  
  
  CONCLUSIONS
  cx43 gene participates in tooth development and mineralization process and plays a crucial role in later mineralization.
authors.forename: Zhiyun
authors.initials: Z
authors.lastname: Xu
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: Xing
authors.initials: X
authors.lastname: Huang
authors.forename: Deqin
authors.initials: D
authors.lastname: Yang
mesh_terms: D000818:Animals; D018031:Connexin 43; D015870:Gene Expression; D005822:Genetic Vectors; D017403:In Situ Hybridization; D009805:Odontogenesis; D010957:Plasmids; D012333:RNA, Messenger; D014070:Tooth; D015027:Zebrafish
chemical_list: D018031:Connexin 43; D012333:RNA, Messenger