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ID 25583
file
creator
Oku, Hiromi
subject
adipocyte
cloning
differentiation
in vitro
fish
gene
PPAR
red sea bream
NDC
Fishing industry. Fisheries
abstract
To investigate the molecular mechanism of fish adipocyte differentiation, the three subtypes of PPAR genes (α, β and γ) were characterized in a marine teleost red sea bream (Pagrus major). The primary structures of red sea bream PPARs exhibited high degrees of similarities to their mammalian counterparts, and their gene expression was detected in various tissues including adipose tissue, heart and hepatopancreas. During the differentiation of primary cultured red sea bream adipocytes, three PPARs showed distinct expression patterns: The α subtype showed a transient increase and the β gene expression tended to increase during adipocyte differentiation whereas the gene expression level of PPARγ did not change. These results suggest that they play distinct roles in adipocyte differentiation in red sea bream. In the differentiating red sea bream adipocytes, mammalian PPAR agonists, 15-deoxy-∆12,14-prostaglandin J2, ciglitazone and fenofibrate did not show clear effects on the adipogenic gene expression. However, 2-bromopalmitate increased the PPARγ and related adipogenic gene expression levels, suggesting the γ subtype plays a central role in red sea bream adipocyte differentiation and in addition, fatty acid metabolites can be used as modulators of adipocyte function. Thus our study highlighted the roles of PPARs in fish adipocyte differentiation and provided information on the molecular mechanisms of fish adipocyte development.
journal title
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology
volume
Volume 151
issue
Issue 3
start page
268
end page
277
date of issued
2008-11
publisher
Elsevier Inc
issn
1096-4959
ncid
publisher doi
pubmed id
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) 2008 Elsevier Inc
relation is version of URL
http://dx.doi.org/10.1016/j.cbpb.2008.07.007
department
Graduate School of Biosphere Science