Screening and Identification of Differentially Expressed Genes in Goose Hepatocytes Exposed to Free Fatty Acid

文献类型： 外文期刊

第一作者： Pan, Zhixiong

作者： Pan, Zhixiong;Wang, Jiwen;Kang, Bo;Han, Chunchun;Tang, Hui;Li, Liang;Xu, Feng;Zhou, Zehui;Lv, Jia;Lu, Lizhi

作者机构：

关键词： HEPATIC STEATOSIS;GENE EXPRESSION;SUPPRESSIVE SUBTRACTIVE HYBRIDIZATION;OLEIC ACID;PALMITIC ACID;GOOSE

期刊名称：JOURNAL OF CELLULAR BIOCHEMISTRY （ 影响因子：4.429； 五年影响因子：4.266 ）

ISSN： 0730-2312

年卷期： 2010 年 111 卷 6 期

页码：

收录情况： SCI

摘要： The overaccumulation of triglycerides in hepatocytes induces hepatic steatosis; however, little is known about the mechanism of goose hepatic steatosis. The aim of this study was to define an experimental model of hepatocellular steatosis with TO overaccumulation and minimal cytotoxicity, using a mixture of various proportions of oleate and palmitate free fatty acids (FFAs) to induce fat-overloading, then using suppressive subtractive hybridization and a quantitative PCR approach to identify genes with higher or lower expression levels after the treatment of cells with FFA mixtures. Overall, 502 differentially expressed clones, representing 21 novel genes and 87 known genes, were detected by SSH. Based on functional clustering, up- and down-regulated genes were mostly related to carbohydrate and lipid metabolism, enzyme activity and signal transduction. The expression of 20 selected clones involved with carbohydrate and lipid metabolism pathways was further studied by quantitative PCR. The data indicated that six clones similar to the genes ChREBP, Fox01, apoB, IHPK2, KIF1B, and FSP27, which participate in de novo synthesis of fatty acid and secretion of very low density lipoproteins, had significantly lower expression levels in the hepatocytes treated with FFA mixtures. Meanwhile, 13 clones similar to the genes DGAT-1, ACSL1, DHRS7, PPAR alpha, L-FABP, DGAT-2, PCK, ACSL3, CPT-1, A-FABP, PPAR beta, MAT, and ALDOB had significantly higher expression levels in the hepatocytes treated with FFA mixtures. These results suggest that several metabolic pathways are altered in goose hepatocytes, which may be useful for further research into the molecular mechanism of goose hepatic steatosis. J. Cell. Biochem. 111: 1482-1492, 2010. (C) 2010 Wiley-Liss, Inc.

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