Laboratory of Tumor and Development Biology, GIGA-Cancer, Liege University, B23, Avenue Hippocrate 13, Sart-Tilman, B-4000, Liege, Belgium.
Cell Mol Life Sci. 2022 Apr 22;79(5):255. doi: 10.1007/s00018-022-04249-7.
The urokinase plasminogen activator receptor-associated protein (uPARAP/Endo180) is already known to be a key collagen receptor involved in collagen internalization and degradation in mesenchymal cells and some macrophages. It is one of the four members of the mannose receptor family along with a macrophage mannose receptor (MMR), a phospholipase lipase receptor (PLA2R), and a dendritic receptor (DEC-205). As a clathrin-dependent endocytic receptor for collagen or large collagen fragments as well as through its association with urokinase (uPA) and its receptor (uPAR), uPARAP/Endo180 takes part in extracellular matrix (ECM) remodeling, cell chemotaxis and migration under physiological (tissue homeostasis and repair) and pathological (fibrosis, cancer) conditions. Recent advances that have shown an expanded contribution of this multifunctional protein across a broader range of biological processes, including vascular biology and innate immunity, are summarized in this paper. It has previously been demonstrated that uPARAP/Endo180 assists in lymphangiogenesis through its capacity to regulate the heterodimerization of vascular endothelial growth factor receptors (VEGFR-2 and VEGFR-3). Moreover, recent findings have demonstrated that it is also involved in the clearance of collectins and the regulation of the immune system, something which is currently being studied as a biomarker and a therapeutic target in a number of cancers.
尿激酶型纤溶酶原激活物受体相关蛋白 (uPARAP/Endo180) 已被证实是一种关键的胶原受体,参与间质细胞和一些巨噬细胞中的胶原内化和降解。它是甘露糖受体家族的四个成员之一,其他三个成员分别为巨噬细胞甘露糖受体 (MMR)、磷脂酶 A2 受体 (PLA2R) 和树突状细胞受体 (DEC-205)。作为胶原或大胶原片段的网格蛋白依赖性内吞受体,以及通过与尿激酶 (uPA) 和其受体 (uPAR) 的结合,uPARAP/Endo180 参与细胞外基质 (ECM) 的重塑、细胞趋化和迁移,无论是在生理条件下(组织稳态和修复)还是在病理条件下(纤维化、癌症)。本文总结了最近的研究进展,这些进展表明这种多功能蛋白在更广泛的生物学过程中发挥了扩展作用,包括血管生物学和先天免疫。先前已经证明,uPARAP/Endo180 通过调节血管内皮生长因子受体 (VEGFR-2 和 VEGFR-3) 的异二聚化来协助淋巴管生成。此外,最近的发现表明,它还参与了凝集素的清除和免疫系统的调节,目前正在作为多种癌症的生物标志物和治疗靶点进行研究。