促炎细胞因子
上睑下垂
坏死性下垂
神经炎症
泛素连接酶
脊髓损伤
程序性细胞死亡
细胞生物学
泛素
医学
神经科学
化学
细胞凋亡
炎症
生物
免疫学
脊髓
生物化学
基因
作者
Junsheng Lou,Yiting Mao,Jiang Wu,Honghao Shen,Yunpeng Fan,Qing Yu,Conghui Zhou,Ziyao Wei,Kailiang Zhou,Mengran Jin,Junsong Wu
标识
DOI:10.1002/advs.202407132
摘要
Abstract Spinal cord injury (SCI) is a severe injury to the central nervous system, and its treatment is always a major medical challenge. Proinflammatory cell death is considered an important factor affecting neuroinflammation and the prognosis after injury. PANoptosis, a newly discovered type of proinflammatory cell death, regulates the activation of executioner molecules of apoptosis, pyroptosis and necroptosis through the PANoptosome, providing a new target for therapeutic intervention after SCI. However, its role and regulatory mechanism in SCI are not yet elucidated. Here, based on proteomic data, YBX1 expression is significantly increased in neurons after SCI. Guided by RIP‐seq, subsequent experiments reveal that YBX1 promotes ZBP1 expression by stabilizing the Zbp1 mRNA, thereby aggravating ZBP1‐mediated PANoptosis. Furthermore, the E3 ubiquitin ligase TRIM56 is identified as an endogenous inhibitor of YBX1 via molecular docking and IP/MS analysis. Mechanistically, TRIM56 bound to YBX1 and promoted its ubiquitination, thereby accelerating its degradation. Taken together, these findings reveal a novel function of YBX1 in regulating ZBP1‐mediated PANoptosis in the pathogenesis of SCI and verified that TRIM56 functions as an endogenous inhibitor to promote the ubiquitin‐proteasomal degradation of YBX1, providing new insights into SCI treatment strategies.
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