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Title 

Proteomic analysis of glutamate-induced toxicity in HT22 cells

Authors 

You Ra LeeH W ParkSung Goo ParkS ChoP K MyungByoung Chul ParkDo Hee Lee

Publisher 

Wiley-Blackwell

Issue Date 

2007

Citation 

Proteomics, vol. 7, no. 2, pp. 185-193

Keywords 

glutamateHT22molecular chaperonesoxidative stressubiquitin-proteasome systemanimal cellcell deathcytotoxicityproteomicscell line

Abstract 

In the present study, we have investigated the proteome changes associated with glutamate-induced HT22 cell death, a model system to study oxidative stress-mediated toxicity. Among a number of HT22 proteins exhibiting altered expression, several molecular chaperones demon-strated substantial changes. For example, the levels of Hsp90 and Hsp70 decreased as cell death progressed whereas that of Hsp60 increased dramatically. Interestingly, cytosolic Hsp60 increased more prominently than mitochondrial Hsp60. Concomitantly, the accumulation of poly-ubiquitylated proteins and differential regulation of the peptidase activities and the subunits of 26S proteasomes were observed in glutamate-treated HT22 cells. Our findings that the molecular chaperones and the ubiquitin-proteasome system undergo changes during glutamate-induced HT22 cell death may suggest the importance of a protein quality control system in oxidative damage-mediated toxicity.

ISSN 

1615-9853

Link 

http://dx.doi.org/10.1002/pmic.200600644

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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