Regulation of post-ischemic inflammatory response: A novel function of the neuronal tyrosine phosphatase STEP.

Regulation of post-ischemic inflammatory response: A novel function of the neuronal tyrosine phosphatase STEP.
复制标题

DOI:
10.1016/j.bbi.2020.12.034
复制
发表时间:
2021-03
期刊:
Brain, behavior, and immunity
影响因子:
--
通讯作者:
Paul S
Paul S
中科院分区:
其他
文献类型:
--
作者:
Rajagopal S;Yang C;DeMars KM;Poddar R;Candelario-Jalil E;Paul S

文献摘要

参考文献

被引文献

相似文献

神经元特异性酪氨酸磷酸酶STEP正在成为急性缺血性卒中的关键神经保护剂。然而,目前尚不清楚STEP如何影响中风的结局。我们发现STEP缺陷小鼠缺血性脑损伤的加重涉及神经元p38丝裂原活化蛋白激酶(STEP的底物)的早期发作和持续活化。这导致神经元环氧合酶-2的表达和前列腺素E2的合成快速增加,导致小胶质细胞形态改变为变形样激活状态,基质金属蛋白酶-9活化,紧密连接蛋白裂解和IgG外渗到缺血脑中。通过静脉内施用STEP衍生的肽模拟物恢复STEP信号传导减少缺血后炎症反应并减轻脑损伤。这些发现确定了STEP在调节缺血后神经炎症中的独特作用,并进一步强调了STEP模拟物在炎症导致脑损伤的神经系统疾病中的治疗潜力。
The neuron-specific tyrosine phosphatase STEP is emerging as a key neuroprotectant against acute ischemic stroke. However, it remains unclear how STEP impacts the outcome of stroke. We find that the exacerbation of ischemic brain injury in STEP deficient mice involves an early onset and sustained activation of neuronal p38 mitogen activated protein kinase, a substrate of STEP. This leads to rapid increase in the expression of neuronal cyclooxygenase-2 and synthesis of prostaglandin E2, causing change in microglial morphology to an amoeboid activated state, activation of matrix metalloproteinase-9, cleavage of tight junction proteins and extravasation of IgG into the ischemic brain. Restoration of STEP signaling with intravenous administration of a STEP-derived peptide mimetic reduces the post-ischemic inflammatory response and attenuates brain injury. The findings identify a unique role of STEP in regulating post-ischemic neuroinflammation and further emphasizes the therapeutic potential of the STEP-mimetic in neurological disorders where inflammation contributes to brain damage.
DOI: 10.1186/1756-6606-6-14
发表时间: 2013-03-23
期刊: Molecular brain
影响因子: 3.6
作者:
Hawkins KE;DeMars KM;Yang C;Rosenberg GA;Candelario-Jalil E
通讯作者: Candelario-Jalil E
DOI: 10.1161/01.str.32.5.1208
发表时间: 2001-05-01
期刊: STROKE
影响因子: 8.3
作者:
Ito, D;Tanaka, K;Fukuuchi, Y
通讯作者: Fukuuchi, Y
DOI: 10.1073/pnas.96.22.12866
发表时间: 1999-10-26
影响因子: 11.1
作者:
Alessandrini, A;Namura, S;Bonventre, JV
通讯作者: Bonventre, JV
DOI: 10.1016/s0006-8993(01)03371-6
发表时间: 2002-03-08
期刊: BRAIN RESEARCH
影响因子: 2.9
作者:
Butler, TL;Kassed, CA;Pennypacker, KR
通讯作者: Pennypacker, KR
DOI: 10.1111/j.1469-7793.1999.00399.x
发表时间: 1999-10-15
影响因子: 5.5
作者:
Bartlett, SR;Sawdy, R;Mann, GE
通讯作者: Mann, GE