Micro-RNA-181a regulates osteopontin-dependent metastatic function in hepatocellular cancer cell lines.
Micro-RNA-181a regulates osteopontin-dependent metastatic function in hepatocellular cancer cell lines.
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DOI:
10.1016/j.surg.2010.05.007
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发表时间:
2010-08
期刊:
影响因子:
3.8
通讯作者:
Kuo PC
中科院分区:
文献类型:
--
作者:
Bhattacharya SD;Garrison J;Guo H;Mi Z;Markovic J;Kim VM;Kuo PC
OPN is a variably expressed secreted glycophosphoprotein that mediates hepatocellular cancer (HCC) growth and metastasis. MicroRNAs (miRNAs) may be responsible for variant OPN expression, interrupting translation by binding OPN messenger RNA (mRNA) 3′-untranslated regions (UTRs). Microarray analysis identified microRNAs of interest. Plasmid luciferase reporter constructs with variable OPN 3′UTR mutations were transfected into two HCC cell lines to determine miRNA regulation of OPN expression. Western blot confirmed variable OPN expression in both cell lines. Invasion, adhesion, and migration evaluated metastatic behavior in Hep G2 and Hep 3B with modified microRNA and OPN expression. Hep 3B produces 36x microRNA 181a compared to Hep G2. Luciferase activity after transfection with miRNA 181a precursor was decreased in both cell lines (p<0.01); luciferase activity increased with miRNA 181a inhibitor transfection in both cell lines (p<0.01). Hep 3B transfected with mutated OPN 3′UTR increased luciferase activity 108% (p<0.01). Hep G2 transfected with miRNA precursor decreased OPN expression 5x (p<0.01) in Western blot. Hep 3B transfection with miRNA precursor increased OPN expression 3x (p<0.01) in Western blot. In vitro metastatic correlates increased in Hep 3B lines after transfection with siOPN and/or miRNA 181a inhibitor (p<0.01). MiRNA 181a decreases OPN expression in HCC cell lines. This undescribed mechanism may confer metastatic characteristics to HCC.
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影响因子:
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Budhu, Anuradha;Jia, Hu-Liang;Wang, Xin Wei
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Wang, Xin Wei
影响因子:
4.8
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Livak, KJ;Schmittgen, TD
通讯作者:
Schmittgen, TD