trans-10,cis-12 conjugated linoleic acid alters lipid metabolism of goat mammary epithelial cells by regulation of de novo synthesis and the AMPK signaling pathway
2018
Zhang, T.Y. | Huang, J.T. | Tian, H.B. | Ma, Y. | Chen, Z. | Wang, J.J. | Shi, H.P. | Luo, J.
The trans-10,cis-12 isomer of conjugated linoleic acid (t10c12-CLA) is a biohydrogenation intermediate in the rumen and has been shown to cause milk fat depression in dairy goats. However, few studies have focused on the in vitro molecular mechanisms involved in the response of the goat mammary gland to t10c12-CLA. In the present study, RNA sequencing technology was used to investigate the effects of t10c12-CLA on goat mammary epithelial cells. From the data, 25,153 annotated transcripts were obtained, and differentially expressed genes were selected based on a false discovery rate <0.05. Candidate genes and potent cellular signaling pathways were identified through Gene Ontology (GO) and pathway analysis. Next, real-time quantitative PCR and Western blot analyses were used to verify the results of the RNA sequencing data. The results indicated that t10c12-CLA inhibits fatty acid synthesis through downregulation of genes involved in de novo fatty acid synthesis, and this process is likely correlated with the activation of the AMP-activated protein kinase signaling pathways.
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