Muscarinic activation attenuates abnormal processing of β-amyloid precursor protein induced by cobalt chloride-mimetic hypoxia in retinal ganglion cells

作者：Zhu, Xu; Zhou, Wei; Cui, Yongyao; Zhu, Liang; Li, Juan; Xia, Zheng; Shao, Biyun; Wang, Hao; Chen, Hongzhuan^*

来源：Biochemical and Biophysical Research Communications, 2009, 384(1): 110-113.

DOI：10.1016/j.bbrc.2009.04.080

• beta-Amyloid peptide
• beta-Amyloid precursor protein
• beta-Site APP-cleaving enzyme 1
• Presenilin-1
• Retinal ganglion cells
• Hypoxia

beta-Amyloid peptide (A beta), the major pathological factor in Alzheimer's disease, has recently been reported to he implicated in the development of glaucoma. In this study, we explored the effect Of muscarinic activation on abnormal processing of beta-amyloid precursor protein (APP) induced by a risk factor hypoxia in retinal ganglion cells. Hypoxia mimetic compound cobalt chloride could increase the generation of A beta via up-regulating the expression of APP as well as the expression of beta-secretase and gamma-secretase, whereas muscarinic receptor agonist pilocarpine could significantly attenuate this abnormal pathway, thereby resulting in a decreased amyloidogenic cleavage of APP. This finding may provide an insight into better understanding of pathophysiology for the retinal neurodegenerative disease and searching for its new modifying approach.

• 出版日期2009-6-19
• 单位河北医科大学; 上海交通大学