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Fatty Acids Modulate The Expression O.f Pyruvate Kinase And A rachidonate-Lipoxygenase Through Ppar Gamma/Cyp2C45 Pathway: A Link To Goose Fatty Liver

文献类型： 外文期刊

作者： Zhao, M. M.;Liu, T. J.;Gong, D. Q.;Geng, T. Y.;Wang, Q.;Liu, L.;Zhang, R.

作者机构：

关键词： CYP2C45; fatty acid; PPAR; pyruvate kinase; arachidonate 5-lipoxygenase

期刊名称： POULTRY SCIENCE

ISSN： 0032-5791

年卷期： 2019 年 98 卷 10 期

页码：

摘要： Cytochrome P-450 2C45 (CYP2C45) is the most highly expressed cytochrome P-450 isoform in chicken liver, and may play an important role in avian liver biology. However, information regarding the function of CYP2C45 in fatty liver is generally limited. The aim of this study was to investigate the role of CYP2C45 during the development of goose fatty liver. Our result indicated that the transcription of CYP2C45, together with PK and ALOX5, was increased in goose liver upon overfeeding for 19 D (P < 0.05). In goose primary hepatocytes, CYP2C45 RNA expression was also upgraded by the treatment with various chemicals like insulin, the fatty acids, and PPAR agonists (P < 0.05). We also found that both CYP2C45 overexpression and troglitazone treatment could increase the expression of pyruvate kinase (PK) and arachidonate 5-lipoxygenase (ALOX5), and furthermore, showed that the up-regulation of PK and ALOX5 induced by troglitazone could be suppressed by small interfering RNAs targeting CYP2C45 (P < 0.05). These findings suggest that fatty acids treatment and the overfeeding can induce the up-regulation of CYP2C45 expression possibly via PPAR gamma and that the induction of PK and ALOX5 in goose fatty liver is at least partially attributed to fatty acid-induced expression of CYP2C45. Thus, our data provides an insight into the mechanism by which glycolysis and arachidonic acid metabolism are modulated in goose fatty liver.

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