S1RA (E-52862) is a potent and selective sigma-1 receptor (σ1R, Ki=17nM) antagonist, showed good selectivity against σ2R (Ki>1000nM).
信号通路
GPCR & G Protein
靶点
σ1R
σ2R
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IC50
17nM (Ki)
>1000nM (Ki)
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体外研究
S1RA behaved as a highly selective σ1 receptor antagonist. It showed high affinity for human (Ki=17nM) and guinea pig (Ki=23.5nM) σ1 receptors but no significant affinity for the σ2 receptors (Ki>1000nM for guinea pig and rat σ2 receptors). Moderate affinity (Ki=328nM) and antagonistic activity, with very low potency (IC50=4700nM) was found at the human 5-HT2B receptor. S1RA showed no significant affinity (Ki>1μM or % inhibition at 1μM <50%) for other additional 170 targets (receptors, transporters, ion channels and enzymes).
体内研究
Control (non-operated) and nerve-injured mice received a single or repeated (twice daily for 12 days) i.p. administration of S1RA at 25mg·kg/L, the same dose used for the assessment of behavioural hypersensitivity in the chronic treatment study. Acute treatment was given on day 12 post-surgery and repeated treatment with S1RA started the day of surgery, as in the behavioural studies. Intrathecal pre-treatment with idazoxan prevented the systemic S1RA antinociceptive effect, suggesting that the S1RA antinociception depends on the activation of spinal α2 -adrenoceptors which, in turn, could induce an inhibition of formalin-evoked glutamate release. When administered locally, intrathecal S1RA inhibited only the flinching behavior, whereas intracerebroventricularly or intraplantarly injected also attenuated the lifting/licking behavior.
临床实验
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特征
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相关实验数据(此数据来自于公开文献,碧云天并不保证其有效性):
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酶活性检测实验
方法
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细胞实验
细胞系
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浓度
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处理时间
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方法
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动物实验
动物模型
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配制
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剂量
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给药方式
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参考文献:
1. Díaz JL, et al. J Med Chem. 2012 Oct 11, 55(19), 8211-24.