Abstract
Mammalian CCAAT/enhancer-binding proteins (C/EBPs) are generally known as regulators in adipocyte differentiation. However, more understanding of the role of C/EBPs in lipid and glucose metabolism remains to be discovered. In this study, we verified the effect of CEBP-2, the homolog of CEBPs, on fat storage in Caenorhabditis elegans. Expressions of 85 genes that encode the major enzymes in energy metabolic pathways were then screened in cebp-2-deficient worms using a quantitative real-time polymerase chain reaction (QRT-PCR). Our data implied that loss of function of CEBP-2 displayed a low-fat phenotype in C. elegans owing to increased expression of ech-1.1 and decreased expression of fat-5. Our findings indicated that cebp-2 controls total body fat content by governing fatty acid mitochondrial β-oxidation and desaturation in C. elegans. These data provide insights into how C/EBPs may affect lipid metabolism in mammals in addition to regulating adipocyte differentiation.
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