The sigma-1 receptor-TAMM41 axis modulates neuroinflammation and attenuates memory impairment during the latent period of epileptogenesis
文献类型： 外文期刊
作者： Ji, Jianlun 1 ; Gao, Ce 2 ; Wang, Qinghua 2 ; Jia, Xiaoxia 2 ; Tian, Hao 3 ; Wei, Yaqin 2 ; Liu, Zhidong 1 ; Wang, Yun 2 ; Guo, Lin 1 ;
作者机构： 1.Xuzhou Med Univ, Dept Pharm, Affiliated Hosp, Xuzhou, Peoples R China
2.Xuzhou Med Univ, Clin Pharm, Jiangsu Key Lab New Drug Res, Xuzhou, Peoples R China
3.Yunnan Acad Agr Sci, Agroprod Proc Res Inst, Kunming, Peoples R China
4.Xuzhou Med Univ, Jiangsu Key Lab New Drug Res & Clin Pharm, 209 Tongshan Rd, Xuzhou 221000, Jiangsu, Peoples R China
关键词： epileptogenesis; memory impairment; mitochondrial translocator assembly and maintenance 41 homolog; neuroinflammation; sigma-1 receptor
期刊名称：ANIMAL MODELS AND EXPERIMENTAL MEDICINE （ 影响因子：3.7； 五年影响因子：3.7 ）
ISSN： 2096-5451
年卷期： 2023 年
页码：
收录情况： SCI
摘要： BackgroundTherapy in the latent period is favorable for retarding the process of epileptogenesis. Recently, we have discovered that the activated sigma-1 receptor (Sig-1R) attenuates the hippocampus pathological injury and memory impairment in the latent period of epileptogenesis. But the molecular mechanism needs further investigation. MethodsPRE-084 was utilized as a research tool to highly selectively activate Sig-1R in epileptic mice. After the treatment of PRE-084, the pro-inflammatory cytokines, neuropathological traits, and the level of mitochondrial translocator assembly and maintenance 41 homolog (TAMM41) in the hippocampus were examined. The mode in which the Sig-1R interacts with TAMM41 was explored. The role of TAMM41 in the protecting effect of PRE-084 was established. ResultsPRE-084 inhibited the growth of pro-inflammatory cytokines, reduced the formation of gliosis, alleviated neuronal damage in the hippocampus, and attenuated memory impairment in the latent period of epileptogenesis. The protein level of TAMM41 decreased in the hippocampi of epileptic mice and increased in the PRE-084-treated mice. The Sig-1R bound with TAMM41 directly, maintaining the stability of TAMM41. Knockdown of TAMM41 reversed the protective effect of PRE-084, and overexpression of TAMM41 exhibited a similar protective action to that of PRE-084. ConclusionWe presented the concept of the "sigma-1 receptor-TAMM41 axis" and proposed that augmenting this axis can attenuate neuroinflammation and memory impairment in the process of epileptogenesis.
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