TAT-W61 peptide attenuates neuronal injury through blocking the binding of S100b to the V-domain of Rage during ischemic stroke.

Autor: Liang, Jia, Li, Hui, Liu, Chang‑Dong, Zhou, Xiao‑Yan, Fu, Yan‑Yan, Ma, Xiang-Yu, Liu, Dan, Chen, Yu-Ling, Feng, Qian, Zhang, Zhen, Wen, Xiang-Ru, Zhu, Guang, Wang, Nan, Song, Yuan-Jian
Předmět:
Zdroj: Journal of Molecular Medicine; Feb2024, Vol. 102 Issue 2, p231-245, 15p
Abstrakt: Ischemic stroke is a devastative nervous system disease associated with high mortality and morbidity rates. Unfortunately, no clinically effective neuroprotective drugs are available now. In ischemic stroke, S100 calcium-binding protein b (S100b) binds to receptor for advanced glycation end products (Rage), leading to the neurological injury. Therefore, disruption of the interaction between S100B and Rage can rescue neuronal cells. Here, we designed a peptide, termed TAT-W61, derived from the V domain of Rage which can recognize S100b. Intriguingly, TAT-W61 can reduce the inflammatory caused by ischemic stroke through the direct binding to S100b. The further investigation demonstrated that TAT-W61 can improve pathological infarct volume and reduce the apoptotic rate. Particularly, TAT-W61 significantly improved the learning ability, memory, and motor dysfunction of the mouse in the ischemic stroke model. Our study provides a mechanistic insight into the abnormal expression of S100b and Rage in ischemic stroke and yields an invaluable candidate for the development of drugs in tackling ischemic stroke. Key messages: S100b expression is higher in ischemic stroke, in association with a high expression of many genes, especially of Rage. S100b is directly bound to the V-domain of Rage. Blocking the binding of S100b to Rage improves the injury after ischemic stroke. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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