申请人:THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
公开号:US10485845B2
公开(公告)日:2019-11-26
The present invention relates to the discovery of a novel molecular pathway involved in long-term hyperexcitability of sensory neurons, which, in higher animals, is associated with persistent pain. It is based on the discovery that, following injury to an axon of a neuron, an increase in nitric oxide synthase activity results in increased nitric oxide production, which, in turn, activates guanylyl cyclase, thereby increasing levels of cGMP. Increased cGMP results in activation of protein kinase G (“PKG”), which then is retrogradely transported along the axon to the neuron cell body, where it phosphorylates MAPKerk.
本发明涉及一种新型分子通路的发现,这种通路参与了感觉神经元的长期过度兴奋,在高等动物中,这种兴奋与持续性疼痛有关。它基于以下发现:神经元轴突受伤后,一氧化氮合酶活性的增加会导致一氧化氮产量的增加,而一氧化氮合酶又会激活鸟苷酸环化酶,从而提高 cGMP 的水平。增加的 cGMP 会激活蛋白激酶 G("PKG"),然后沿着轴突逆向运输到神经元细胞体,在那里使 MAPKerk 磷酸化。