Ceni Claire, Barker Philip A
Centre for Neuronal Survival, Montreal Neurological Institute, McGill University, Quebec, Canada.
Neuron. 2005 Jun 16;46(6):839-40. doi: 10.1016/j.neuron.2005.06.002.
The p75 neurotrophin receptor (p75NTR) collaborates with the Nogo receptor (NgR) and LINGO-1 to activate RhoA in response to myelin-based growth inhibitors such as myelin-associated glycoprotein (MAG). In this issue of Neuron, Domeniconi et al., in a surprising turn, show that MAG induces intramembrane proteolysis (RIP) of p75NTR and find that p75NTR cleavage is required for MAG-induced RhoA activation and growth inhibition.
p75神经营养因子受体(p75NTR)与Nogo受体(NgR)和LINGO-1协同作用,以响应基于髓磷脂的生长抑制剂(如髓磷脂相关糖蛋白(MAG))激活RhoA。在本期《神经元》杂志中,多梅尼科尼等人出人意料地发现,MAG可诱导p75NTR的膜内蛋白水解(RIP),并发现p75NTR的裂解是MAG诱导的RhoA激活和生长抑制所必需的。