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  • Title: Effects of low doses of Tat-PIM2 protein against hippocampal neuronal cell survival.
    Author: Woo SJ, Shin MJ, Kim DW, Jo HS, In Yong J, Ryu EJ, Cha HJ, Kim SJ, Yeo HJ, Cho SB, Park JH, Lee CH, Yeo EJ, Choi YJ, Park S, Im SK, Kim DS, Kwon OS, Park J, Eum WS, Choi SY.
    Journal: J Neurol Sci; 2015 Nov 15; 358(1-2):226-35. PubMed ID: 26365288.
    Abstract:
    Oxidative stress is considered a major factor in various neuronal diseases including ischemia-reperfusion injury. Proviral Integration Moloney 2 (PIM2) proteins, one of the families of PIM kinases, play crucial roles in cell survival. However, the functions of PIM2 protein against ischemia are not understood. Therefore, the protective effects of PIM2 against oxidative stress-induced hippocampal HT22 cell death and brain ischemic injury were evaluated using Tat-PIM2, a cell permeable fusion protein. Tat-PIM2 protein transduced into hippocampal HT22 cells. Low doses of transduced Tat-PIM2 protein protected against oxidative stress-induced cell death including DNA damage and markedly inhibited the activation of mitogen activated protein kinase (MAPKs), NF-κB and the expression levels of Bax protein. Furthermore, Tat-PIM2 protein transduced into the CA1 region of the hippocampus and significantly prevented neuronal cell death in an ischemic insult animal model. These results indicated that low doses of Tat-PIM2 protein protects against oxidative stress-induced neuronal cell death, suggesting low doses of Tat-PIM2 protein provides a potential therapeutic agent against oxidative stress-induced neuronal diseases including ischemia.
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