Numerous studies have shown proteases to be tightly localized around cells, through cell-surface molecules such as α2(IV), CD44, or LRP [44], [45].
PCSK9 also enhances the degradation of very-low-density-lipoprotein receptor (VLDLR) and lipoprotein receptor-related protein 1 (LRP-1) in a LDL-receptor independent manner.
We were thus surprised to find that LDLR and LDLR-related protein 1 (LRP-1) are present at the apical side of the nasal epithelial cells and thus available for uptake of virus at its main port of entry (Ellinger et al., to be published).
The low density lipoprotein receptor-related protein 1 (LRP-1) and P-glycoprotein (P-gp) have been implicated in Aβ efflux [ 17, 18].
DCN also binds and neutralizes molecules such as connective tissue growth factor (CTGF/CCN2), low-density lipoprotein receptor-related protein 1 (LRP-1), thrombospondin (THBS), and Wnt-1-induced secreted protein 1 (WISP) [ 56– 56].
It has been shown that engagement of low density lipoprotein receptor 1 (LRP-1) on macrophages results in increased expression of CD11c (Cho et al., 2007; Gower et al., 2011).
MiR-205 inhibits tumor invasion through several pathways; for example, low-density lipoprotein receptor-related protein 1 (LRP-1) promotes cancer cell migration and invasion by inducing the expression of matrix metalloproteinases (MMP) 2 and 9 [ 87, 88].
The cellular uptake of plasma LDL occurs by way of a receptor-mediated endocytosis process via the receptor for native-LDL (LDL-R) in addition to the scavenger receptors for modified LDL: cluster of differentiation 36 (CD36), scavenger receptor class A (SR-A1), scavenger receptor class B type I (SR-B1), and LDLR-related protein 1 (LRP-1).
Numerous lipoprotein receptors of LDL receptor family have been identified in CNS including LDL receptor, VLDL-receptor, apoER2/LRP8, LRP4, LRP, LRP2 (megalin), LRP1B, LRP5/LRP6, and LRP11/SORL1 (Herz, 2009; Pottier et al., 2012).
