期刊
CELL DEATH & DISEASE
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41419-018-1180-y
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资金
- Bio & Medical Technology Development Program of the National Research Foundation of Korea (NRF), MSIP [NRF-2017M3A9A8028619]
- Brain Research Program through NRF - Ministry of Science, ICT & Future Planning [NRF-2016M3C7A1905386, NRF-2017M3C7A1043848]
- Korea Institute of Science and Technology [H.R.2E27860]
- Research Institute for Veterinary Science, Seoul National University
Leucine-rich repeat kinase 2 (LRRK2), originally identified as a causative genetic factor in Parkinson's disease, is now associated with a number of pathologies. Here, we show that brain injury induces a robust expression of endogenous LRRK2 and suggest a role of LRRK2 after injury. We found that various in vitro and in vivo models of traumatic brain injury (TBI) markedly enhanced LRRK2 expression in neurons and also increased the level of hypoxia-inducible factor (HIF)-1 alpha. Luciferase reporter assay and chromatin immunoprecipitation revealed direct binding of HIF-1 alpha in LRRK2 proximal promoter. We also found that HIF-1 alpha-dependent transcriptional induction of LRRK2 exacerbated neuronal cell death fol lowing injury. Furthermore, application of G1023, a specific, brain-permeable inhibitor of LRRK2, substantially prevented brain tissue damage, cell death, and inflammatory response and alleviated motor and cognitive defects induced by control led cortical impact injury. Together, these results suggest HIF-1 alpha-LRRK2 axis as a potential therapeutic target for brain injury.
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