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Gene expression analyses in malformed skeletal structures of gilthead sea bream ( Sparus aurata )
Author(s) -
RieraHeredia Natàlia,
Vélez Emilio J.,
Gutiérrez Joaquim,
Navarro Isabel,
Capilla Encarnación
Publication year - 2019
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/jfd.13019
Subject(s) - biology , osteopontin , runx2 , osteocalcin , extracellular matrix , cathepsin k , gene expression , alkaline phosphatase , mesenchymal stem cell , downregulation and upregulation , microbiology and biotechnology , anatomy , skeletal disorder , transcription factor , resorption , medicine , endocrinology , gene , genetics , osteoporosis , osteoclast , biochemistry , in vitro , enzyme
The incidence of skeletal anomalies in reared fish has been translated for years in important economic losses for the aquaculture industry. In the present study, we have analysed the gene expression of extracellular matrix components and transcription factors involved in bone development in gilthead sea bream presenting different skeletal anomalies: lordosis (LD), lordosis–scoliosis–kyphosis (LSK) or opercular, dental or jaw malformations in comparison with control (CT) specimens. Results showed a possible link between the presence of LD and LSK and the significant downregulation of genes involved in osteoblasts' maturation and matrix mineralization (collagen type 1‐alpha, osteopontin, osteocalcin, matrix Gla protein and tissue non‐specific alkaline phosphatase), as well as in bone resorption (cathepsin K and matrix metalloproteinase 9) compared to CT animals. Contrarily, the key osteogenic transcription factor runx2 was upregulated in the malformed vertebra suggesting impaired determination of mesenchymal stem cells towards the osteoblastic lineage. Despite the gene expression patterns of the other malformed structures were not affected in comparison with CT fish, the results of the present study may contribute in the long term to identify potential candidate gene profiles associated with column deformities that may help reducing the incidence of appearance of skeletal anomalies in this important aquaculture species.