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- W2024370562 abstract "Initial studies have established expression of low-density lipoprotein (LDL) receptor-related protein 6 (LRP6) in vascular smooth muscle cells (VSMCs). We hypothesized that LRP6 is a critical mediator governing the regulation of the canonical Wnt/beta-catenin/T cell factor 4 (Tcf-4) cascade in the vasculature. This hypothesis was based on our previous work demonstrating a role for the beta-catenin/Tcf-4 pathway in vascular remodeling as well as work in other cell systems establishing a role for LRP family members in the Wnt cascade. In line with our hypothesis, LRP6 upregulation significantly increased Wnt-1-induced Tcf activation. Moreover, a dominant interfering LRP6 mutant lacking the carboxyl intracellular domain (LRP6DeltaC) abolished Tcf activity. LRP6-induced stimulation of Tcf was blocked in VSMCs harboring constitutive expression of a dominant negative Tcf-4 transgene lacking the beta-catenin binding domain, suggesting that LRP6-induced activation of Tcf was mediated through a beta-catenin-dependent signal. Expression of the dominant interfering LRP6DeltaC transgene was sufficient to abolish the Wnt-induced survival as well as cyclin D1 activity and cell cycle progression. In conclusion, these findings provide the first evidence of a role for an LDL receptor-related protein in the regulation of VSMC proliferation and survival through the evolutionary conserved Wnt signaling cascade." @default.
- W2024370562 created "2016-06-24" @default.
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- W2024370562 date "2004-12-01" @default.
- W2024370562 modified "2023-10-01" @default.
- W2024370562 title "LDL receptor-related protein LRP6 regulates proliferation and survival through the Wnt cascade in vascular smooth muscle cells" @default.
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- W2024370562 doi "https://doi.org/10.1152/ajpheart.01173.2003" @default.
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