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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43542

Title: Overexpression of gankyrin induces liver steatosis in zebrafish (Danio rerio)
Authors: Guor Mour Her;Chia-Chun Hsu;Jiann-Ruey Hong;Chi-Yu Lai, Meng-Chieh Hsu;Hsi-Wen Pang;Sheng-Kai Chan;Wan-Yu Pai
Contributors: 國立臺灣海洋大學:生命科學系
Date: 2011-09
Issue Date: 2017-09-15T02:41:24Z
Publisher: Biochimica Biophysica Acta-Molecular and Cell Biology Lipids
Abstract: Abstract:Gankyrin is a small ankyrin-repeat protein that previous research has confirmed to be overexpressed in hepatocellular carcinoma (HCC). Although relevant literature has reported on gankyrin functions in cellular proliferation and tumorigenesis, the exact role of gankyrin is poorly understood in animal model systems. This study analyzed hepatic lipid accumulation in gankyrin transgenic (GK) zebrafish. Bromodeoxyuridine (BrdU)-positive cells were predominantly increased in the liver bud of GK larvae, indicating that gankyrin functionally promoted cell proliferation at the larval stage in GK fish. However, over 90% of the viable GK adults showed an increased lipid content, leading in turn to liver steatosis. Liver histology and oil red O staining also indicated the accumulation of fatty droplets in GK fish, consistent with the specific pathological features of severe steatosis. Molecular analysis revealed that gankyrin overexpression induced hepatic steatosis and modulated the expression profiles of four hepatic microRNAs, miR-16, miR-27b, miR-122, and miR-126, and 22 genes involved in lipid metabolism. Moreover, significantly increased hepatic cell apoptosis resulted in liver damage in GK adults, leading to liver failure and death after approximately 10months. This study is the first to report gankyrin as a potential link between microRNAs and liver steatosis in zebrafish.
Relation: 1811(9), pp.536-548
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/43542
Appears in Collections:[生命科學系] 期刊論文

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