Critical Role of Increased PTEN Nuclear Translocation in Excitotoxic and Ischemic Neuronal Injuries
Critical Role of Increased PTEN Nuclear Translocation in Excitotoxic and Ischemic Neuronal Injuries
复制标题
PTEN 核易位增加在兴奋性毒性和缺血性神经元损伤中的关键作用
DOI:
10.1523/jneurosci.5661-12.2013
复制
发表时间:
2013-05
影响因子:
5.3
通讯作者:
Wang, Yu Tian
中科院分区:
文献类型:
--
作者:
Lin, Shinn-Zong;Lee, Wei;Shyu, Woei-cherng;Wang, Yu Tian
Stroke is the leading cause of disability in developed countries. However, no treatment is available beyond 3 h post-ictus. Here, we report that nuclear translocation of PTEN (phosphatase and tensin homolog deleted on chromosome TEN) is a delayed step causatively leading to excitotoxic (in vitro) and ischemic (in vivo) neuronal injuries. We found that excitotoxic stimulation of N-methyl-d-aspartate (NMDA) resulted in PTEN nuclear translocation in cultured neurons, a process requiring mono-ubiquitination at the lysine 13 residue (K13), as the translocation was prevented by mutation of K13 or a short interfering peptide (Tat-K13) that flanks the K13 residue. More importantly, using a rat model of focal ischemia, we demonstrated that systemic application of Tat-K13, even 6 h after stroke, not only reduced ischemia-induced PTEN nuclear translocation, but also strongly protected against ischemic brain damage. Our study suggests that inhibition of PTEN nuclear translocation may represent a novel after stroke therapy.
登录
查看更多内容
影响因子:
56.9
作者:
Schwarze, SR;Ho, A;Dowdy, SF
通讯作者:
Dowdy, SF
影响因子:
5.3
作者:
Liu, Yitao;Wong, Tak Pan;Wang, Yu Tian
通讯作者:
Wang, Yu Tian
影响因子:
8.3
作者:
Albers, GW;Clark, WM;Whitehouse, MJ
通讯作者:
Whitehouse, MJ
影响因子:
2.9
作者:
Belayev, L;Busto, R;Ginsberg, MD
通讯作者:
Ginsberg, MD
影响因子:
6.4
作者:
Whiteman, DC;Zhou, XP;Eng, C
通讯作者:
Eng, C