Cudratricusxanthone A protects mouse hippocampal cells against glutamate-induced neurotoxicity via the induction of heme oxygenase-1.
Cudratricusxantone A (CTXA), isolated from the roots of Cudrania tricuspidata Bureau (Moraceae), has potent hepatoprotective, antiproliferative, and monoamine oxidase inhibitory effects. In this study, we examined whether CTXA could protect HT22-immortalized hippocampal cells against glutamate-induced oxidative stress through the induction of heme oxygenase (HO)-1 expression. CTXA induced the expression of HO-1 and increased HO activity dose- and time-dependently. CTXA also suppressed glutamate-induced ROS generation in HT22 cells. Interestingly, treatment of neuronal cells with CTXA enhanced cellular resistance to glutamate oxidative stress. The protective effect of CTXA was abrogated by tin protoporphyrin IX, an HO inhibitor. In addition, treatment with the HO-1 inducer, cobalt protoporphyrin IX, and bilirubin, one of the enzymatic products of HO-1, produced comparable protection. These results demonstrate that CTXA protects neuronal cells from glutamate-induced oxidative stress via the induction of HO-1.
Jeong
Gil-Saeng
GS
Institute for Radiological Imaging Science, Wonkwang University, Iksan, Korea.
An
Ren-Bo
RB
Pae
Hyun-Ock
HO
Chung
Hun-Taeg
HT
Yoon
Kwon-Ha
KH
Kang
Dae-Gill
DG
Lee
Ho-Sub
HS
Kim
Youn-Chul
YC
D000818:Animals; D002460:Cell Line; D018698:Glutamic Acid / Q000633:toxicity; D051547:Heme Oxygenase-1 / Q000378:metabolism*; D006624:Hippocampus / Q000187:drug effects* / Q000201:enzymology; D051379:Mice; D029586:Moraceae / Q000737:chemistry*; D020258:Neurotoxicity Syndromes / Q000517:prevention & control*; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D044004:Xanthones / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*
D044004:Xanthones; C533013:cudratricusxanthone A; D018698:Glutamic Acid; D051547:Heme Oxygenase-1