標題: A Novel AURKA Mutant-Induced Early-Onset Severe Hepatocarcinogenesis Greater than Wild-Type via Activating Different Pathways in Zebrafish
作者: Su, Zhong-Liang
Su, Chien-Wei
Huang, Yi-Luen
Yang, Wan-Yu
Sampurna, Bonifasius Putera
Ouchi, Toru
Lee, Kuan-Lin
Wu, Chen-Sheng
Wang, Horng-Dar
Yuh, Chiou-Hwa
生物科技學系
Department of Biological Science and Technology
關鍵字: hepatocellular carcinoma (HCC);zebrafish;Aurora A kinase (AURKA);beta-catenin;AKT signaling pathway
公開日期: 26-Jun-2019
摘要: Aurora A kinase (AURKA) is an important regulator in mitotic progression and is overexpressed frequently in human cancers, including hepatocellular carcinoma (HCC). Many AURKA mutations were identified in cancer patients. Overexpressing wild-type Aurka developed a low incidence of hepatic tumors after long latency in mice. However, none of the AURKA mutant animal models have ever been described. The mechanism of mutant AURKA-mediated hepatocarcinogenesis is still unclear. A novel AURKA mutation with a.a.352 Valine to Isoleucine (V352I) was identified from clinical specimens. By using liver-specific transgenic fish overexpressing both the mutant and wild-type AURKA, the AURKA(V352I)-induced hepatocarcinogenesis was earlier and much more severe than wild-type AURKA. Although an increase of the expression of lipogenic enzyme and lipogenic factor was observed in both AURKA(V352I) and AURKA(WT) transgenic fish, AURKA(V352I) has a greater probability to promote fibrosis at 3 months compared to AURKA(WT). Furthermore, the expression levels of cell cycle/proliferation markers were higher in the AURKA(V352I) mutant than AURKA(WT) in transgenic fish, implying that the AURKA(V352I) mutant may accelerate HCC progression. Moreover, we found that the AURKA(V352I) mutant activates AKT signaling and increases nuclear beta-catenin, but AURKA(WT) only activates membrane form beta-catenin, which may account for the differences. In this study, we provide a new insight, that the AURKA(V352I) mutation contributes to early onset hepatocarcinogenesis, possibly through activation of different pathways than AURKA(WT). This transgenic fish may serve as a drug-screening platform for potential precision medicine therapeutics.
URI: http://dx.doi.org/10.3390/cancers11070927
http://hdl.handle.net/11536/153053
DOI: 10.3390/cancers11070927
期刊: CANCERS
Volume: 11
Issue: 7
起始頁: 0
結束頁: 0
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