The Coumarin Derivative Osthole Stimulates Adult Neural Stem Cells, Promotes Neurogenesis in the Hippocampus, and Ameliorates Cognitive Impairment in APP/PS1 Transgenic Mice

Biological & Pharmaceutical Bulletin
Liang KongJingxian Yang

Abstract

It is believed that neuronal death caused by abnormal deposition of amyloid-beta peptide is the major cause of the cognitive decline in Alzheimer's disease. Adult neurogenesis plays a key role in the rescue of impaired neurons and amelioration of cognitive impairment. In the present study, we demonstrated that osthole, a natural coumarin derivative, was capable of promoting neuronal stem cell (NSC) survival and inducing NSC proliferation in vitro. In osthole-treated APP/PS1 transgenic mice, a significant improvement in learning and memory function was seen, which was associated with a significant increase in the number of new neurons (Ki67(+)/NF-M(+)) and a decrease in apoptotic cells in the hippocampal region of the brain. These observations suggested that osthole promoted NSC proliferation, supported neurogenesis, and thus efficiently rescued impaired neurons in the hippocampus and ameliorated cognitive impairment. We also found that osthole treatment activated the Notch pathway and upregulated the expression of self-renewal genes Notch 1 and Hes 1 mRNA in NSCs. However, when Notch activity was blocked by the γ-secretase inhibitor DAPT, the augmentation of Notch 1 and Hes 1 protein was ameliorated, and the proliferation-induc...Continue Reading

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Citations

May 29, 2016·Cellular and Molecular Life Sciences : CMLS·Sivadasan Bindu DhaneshJackson James
May 7, 2019·Immunopharmacology and Immunotoxicology·Liang KongJingxian Yang
Sep 18, 2021·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·Wenbo GaoDongmei Chu

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