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摘要: Objective:Very low density lipoprotein receptor (VLDLR) has been considered as a multiple function receptor due to binding numerous ligands, causing endocytosis and regulating cel ular signaling. Our group previously reported that type II VLDLR overexpression in breast cancer tissues. The purpose of this study is to characterize type II VLDLR activities during cel migration using breast cancer cel lines. Methods:Western blotting was used to test protein expression. Cel migration was analyzed by Scratch wound assay. The mRNA expression was tested by realtime-PCR. Reporter assay was to test the transcription activity. Results:Scratch wound and Report assay indicated up-regulated VLDLR II expression promotes cel migration via activating Wnt/β-catenin pathway. The target genes such as VEGF, MMP2 and MMP7 were upregulated in VLDLR II overexpressed cel s. On the contrary, cel s treated with TFPI had an inhibition ef ect of cel migration response to down-regulation of VLDLR II. Conclusion:Type II VLDLR conferred a migration and invasion advantage by activating Wnt/β-catenin pathway, then up-regulating VEGF, MMP2 and MMP7 in breast cancer cel s.

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