期刊
AMERICAN JOURNAL OF CHINESE MEDICINE
卷 45, 期 8, 页码 1667-1682出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0192415X17500902
关键词
Alzheimer's Disease; Curcumin; Caveolin-1; Tau; GSK-3 beta
资金
- National Natural Science Foundation of China [NSFC: 81271426, 81100948]
Caveolin-1, the marker protein of membranal caveolae, is not only involved in cholesterol regulation, but also participates in the cleavage of amyloid beta-protein precursor (APP) and the generation of beta-amyloid peptide. It has been reported to be tightly related with Tau. In our previous studies, curcumin has been confirmed to play a neuroprotective role in Alzheimer's disease (AD), but its effects on Caveolin-1, Tau and their correlation, and the mechanism is still unknown. As such, in the present study, N2a/WT cells, N2a/APP695swe cell and six-month-old APP/PS1 double transgenic mice were enrolled. After curcumin treatment, the expression of Caveolin-1, Tau and their relationship was detected, and the potential mechanisms were explored. The results showed that in the N2a/APP695swe cells, curcumin not only decreased the number of caveolae, but also made their membrane to be thinner; and curcumin could decreased the expression of phosphorylated Tau (P-Tau(ser404)/Tau) and Caveolin-1 (P < 0.01), but the expression of phosphorylated GSK-3 beta (P-GSK-3 beta((ser9))/GSK-3 beta was increased (P < 0.05). In APP/PS1 transgenic mice, the same results were observed. Taken together, our data suggest that curcumin may play an important role in AD via reducing Caveolin-1, inactivating GSK-3 beta and inhibiting the abnormal excessive phosphorylation of Tau, which will provide a new theory for AD treatment with curcumin.
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