Gehlsen K R, Dillner L, Engvall E, Ruoslahti E
Cancer Research Center, La Jolla Cancer Research Foundation, CA 92037.
Science. 1988 Sep 2;241(4870):1228-9. doi: 10.1126/science.2970671.
A receptor for the adhesive basement membrane protein, laminin, was isolated from human glioblastoma cells by affinity chromatography on laminin. This receptor has a heterodimeric structure similar to that of receptors for other extracellular matrix proteins such as fibronectin and vitronectin. Incorporation of the laminin receptor into liposomal membranes makes it possible for liposomes to attach to surfaces coated with laminin. The receptor liposomes also attached to some extent to surfaces coated with fibronectin, but not with other matrix proteins. These properties identify the laminin receptor as a member of the integrin family of cell adhesion receptors.
通过在层粘连蛋白上进行亲和层析,从人胶质母细胞瘤细胞中分离出一种粘附性基底膜蛋白层粘连蛋白的受体。该受体具有异源二聚体结构,与其他细胞外基质蛋白(如纤连蛋白和玻连蛋白)的受体结构相似。将层粘连蛋白受体整合到脂质体膜中,使脂质体能够附着在涂有层粘连蛋白的表面。受体脂质体在一定程度上也能附着在涂有纤连蛋白的表面,但不能附着在其他基质蛋白表面。这些特性表明层粘连蛋白受体是细胞粘附受体整合素家族的一员。