Role and mechanism of neuronal restriction silencing factor REST/NRSF in regulation of epilepsy
- VernacularTitle:神经元限制性沉默因子REST/NRSF参与调控癫痫作用及机制研究
- Author:
Hui LIU
1
;
Bai-Hui YU
;
Ya-Qi WANG
;
Yi-Ling CHEN
;
Zi-Hao CHENG
;
Jia-Rui MA
;
Zi-Shuo KANG
;
Fan ZHANG
Author Information
- Keywords: REST/NRSF; epilepsy; hippocampus; kainic acid; Kv7 channel; KCNQ gene
- From: Chinese Pharmacological Bulletin 2024;40(9):1727-1734
- CountryChina
- Language:Chinese
- Abstract: Aim To investigate the effect and role of neuronal restriction silencing factor(REST/NRSF)in epilepsy disorder.Methods Immunohistochemistry,immunofluorescence,Western blot and qPCR tech-niques were used to detect REST/NRSF expression levels in hippocampal tissues of mice induced by kainic acid and human brain tissue.Viral injections,EEG re-cordings and behavioral methods were used to test the effects on epileptic mice after knockdown and overex-pression of REST/NRSF in the hippocampal CA1 re-gion,respectively.Results The positive rate of REST/NRSF in the lesions of epileptic patients was significantly higher compared with that in the control group.The levels of REST/NRSF protein and mRNA in the CA1 region of the hippocampus of mice in the KA model group were significantly higher.Kv7.2 and Kv7.3 potassium channel mRNA expression levels were significantly down-regulated.Significant up-regu-lation of REST/NRSF expression levels was observed in mouse hippocampus after NMDA injection.Knock-down of REST/NRSF in the CA1 region of hippocam-pus significantly elevated the expression levels of Kv7.2 and Kv7.3 potassium channel mRNAs.The fre-quency of EEG spiking and sharp-wave issuance and epileptic seizure grade were significantly lower.Over-expression of REST/NRSF in the CA1 region of hippo-campus significantly reduced the mRNA expression lev-els of Kv7.2 and Kv7.3 potassium channels.The fre-quency of EEG spiking and sharp-wave issuance was significantly higher and epileptic symptoms were exac-erbated.Conclusion REST/NRSF in mouse hipp-ocampal brain regions is involved in epileptic disease development through transcriptional regulation of Kv7.2 and Kv7.3 potassium channels.
