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Cathepsin L is involved in 6- hydroxydopamine induced apoptosis of SH-SY5Y neuroblastoma cells.
MedLine Citation:
PMID:  21382360     Owner:  NLM     Status:  Publisher    
Our previous study reported that cathepsin L may contribute to the death of dopaminergic neurons in rodent model of Parkinson's disease (PD). In this study we detected the changes in the expression of lysosomal cathepsin L in cellular models of PD. In human neuroblastoma SH-SY5Y cells, treatment with 6-hydroxydopamine caused an increase in cathepsin L immunoreactivity in the cytoplasm and an increased production of the active form of cathepsin L. The contribution of cathepsin L to 6-OHDA-induced NF-κB activation and death of SH-SY5Y neuroblastoma cells were evaluated with an irreversible inhibitor of cathepsin L, Z-FY(t-Bu)-DMK. 6-OHDA- induced IκB-α degradation, NF-κB p65 nuclear translocation, p53 and PUMA expression were partially blocked by Z-FY(t-Bu)-DMK. In addition, Z-FY(t-Bu)- DMK modulated the Bcl-2 family levels, and suppressed caspase-3 activation. These data indicate that cathepsin L may be involved in 6-OHDA-induced apoptosis and Parkinsonian neurodegeneration.
Bei Xiang; Xifeng Fei; Wenzhuo Zhuang; Yun Fang; Zhenghong Qin; Zhongqin Liang
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-4
Journal Detail:
Title:  Brain research     Volume:  -     ISSN:  1872-6240     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2010. Published by Elsevier B.V.
Department of Pharmacology and Laboratory of Aging and Nervous Diseases, Soochow University School of Medicine, 199 Ren Ai Road, Suzhou 215123, China; Department of Pharmacy, Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China.
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