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DJ-1 interacts with HIPK1 and affects H 2 O 2 -induced cell death.
- Source :
-
Free Radical Research . Feb2006, Vol. 40 Issue 2, p155-165. 11p. - Publication Year :
- 2006
-
Abstract
- DJ-1 is a novel oncogene and causative gene for the familial form of Parkinson's disease (PD). DJ-1 has multiple functions, including anti-oxidative stress by eliminating reactive oxygen species (ROS) and transcriptional regulation as a coactivator, and loss of these functions are thought to trigger the onset of PD. The mechanism underlying the prevention of cell death by DJ-1 is, however, not clear. In this study, we found that DJ-1 directly bound to homeodomaininteracting protein kinase 1 (HIPK1) in vitro and in vivo and that these proteins were colocalized in the nucleus. HIPK1 was then found to be degraded in human H1299 cells transfected with wild-type DJ-1 but not with a C106S DJ-1 mutant, a DJ-1 protein disrupting a catalytic domain of the putative protease, in a dose-dependent manner. Furthermore, although knockdown of either DJ-1 or HIPK1 rendered H1299 cells susceptible to H 2 O 2 -induced cell death, double-knockdown of DJ-1 and HIPK1 rendered H1299 cells resistant to H 2 O 2 -induced cell death, suggesting that the elevated level of HIPK1 induced by a low level of DJ-1 inhibits oxidative stress-induced cell death. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10715762
- Volume :
- 40
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Free Radical Research
- Publication Type :
- Academic Journal
- Accession number :
- 19277247
- Full Text :
- https://doi.org/10.1080/10715760500456847