Duplication and gene expression patterns of ß-catenin in Nile tilapia.
Fish Physiol Biochem
; 44(2): 651-659, 2018 Apr.
Article
in En
| MEDLINE
| ID: mdl-29290067
ABSTRACT
ß-Catenin, a key transcriptional coactivator of the Wnt pathway, plays an important role in animal embryonic development and organogenesis. In our earlier study, we have reported that two types of ß-catenin (ß-catenin-1 and ß-catenin-2) were ubiquitously expressed in almost all the tissues examined in tilapia. However, the immunolocalization of ß-catenin in those tissues, especially in extra-gonadal tissues, remains unclear. In the present study, we further confirm that these two types of ß-catenin gene exist only in teleosts and are derived from 3R (third round of genome duplication) by phylogenetic and syntenic analyses. Moreover, the transcriptome analysis conducted in this investigation reveals that two ß-catenins exhibited similar expression patterns in seven adult tissues and four key developmental stages of XX and XY gonads. Finally, immunohistochemistry analysis was performed to detect the cell localization of ß-catenin. A positive signal of ß-catenin was observed in various tissues of tilapia, such as the intestine, liver, kidney, spleen, eye, brain, and gonads. The results of our study indicate that tilapia ß-catenin might be involved in the organ development and play some specific functions in biological processes; all these data will provide basic reference for understanding the molecular mechanism of ß-catenin in regulating of teleost organogenesis.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Gene Expression Regulation, Developmental
/
Gene Duplication
/
Cichlids
/
Beta Catenin
/
Gonads
Limits:
Animals
Language:
En
Journal:
Fish Physiol Biochem
Year:
2018
Type:
Article
Affiliation country:
China