Neurosci Lett. 2015 Apr 23;593:7-12. doi: 10.1016/j.neulet.2015.03.016. Epub 2015 Mar 11.

Discovery of novel anti-parkinsonian effect of schisantherin A in in vitro and in vivo.

Sa F1, Zhang LQ1, Chong CM1, Guo BJ2, Li S2, Zhang ZJ3, Zheng Y1, Hoi PM1, Lee SM4.

Abstract

Dibenzocyclooctadiene lignans represent a unique group of natural chemical structures, are considered as protectants against neuronal cell death and cognitive impairment in neurological disorders. Among the family of dibenzocyclooctadiene lignan analogs from the fruit of Schisandra chinensis (Turcz.) Baill, neuroprotective potential of schisantherin A (StA) has not yet been characterized. In this study, 1-methyl-4-phenylpyridinium ion (MPP(+))-incubated SH-SY5Y cells and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated mice were used to study the neuroprotection of StA. Pretreatment with StA significantly inhibited MPP(+)-induced cytotoxicity in SH-SY5Y cells. Moreover, StA conferred significant protection against MPTP-induced loss of TH-positive dopaminergic neurons in a Parkinson's disease (PD) mice model. Structure activity relationship analysis suggested that methylenedioxy, benzoyloxy and methoxyl groups, in the dibenzocyclooctadiene lignan of StA, were probably functionally important to its neuroprotective activity. In addition, Western blotting analysis demonstrated that StA exhibited neuroprotection against MPP(+) through the regulation of two distinct pathways including increasing CREB-mediated Bcl-2 expression and activating PI3K/Akt survival signaling suggesting that StA might be a promising neuroprotective agent for the prevention of PD.

Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

KEYWORDS:

Bcl-2; Dibenzocyclooctadiene lignans; Neuroprotection; Schisantherin A

PMID:

25770828