Immunostimulatory activity and structure-activity relationship of epimedin B from Epimedium brevicornu Maxim.

Immunostimulatory activity and structure-activity relationship of epimedin B from Epimedium brevicornu Maxim.
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短角淫羊藿中淫羊藿素 B 的免疫刺激活性及其构效关系。

DOI:
10.3389/fphar.2022.1015846
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发表时间:
2022
影响因子:
5.6
通讯作者:
--
中科院分区:
医学2区
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--
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淫羊藿(EF,Epimedium brevicornu Maxim.),是一种传统的植物药,以治疗骨折,关节疾病和多种慢性疾病而闻名。但临床上也有研究表明EF可引起特异质药物性肝损伤(IDILI)。NLRP 3炎性体在包括IDILI在内的各种人类疾病的发病机制中起着至关重要的作用。在本研究中,我们发现,朝藿定B可以特异性地促进尼日利亚菌素或ATP诱导的NLRP 3炎性小体激活线粒体活性氧的协同诱导下。此外,在脂多糖(LPS)介导的易感性小鼠模型中,朝火蓟素B导致Caspase-1和IL-1β分泌激活。MCC 950预处理完全消除了NLRP 3炎性小体的活化并防止了肝损伤。重要的是,一些研究已经证实,EF的一些活性成分可以增强NLRP 3炎性小体的活化,并可能参与EF-IDILI的发病机制。没有关于EF中与免疫刺激活性相关的构效关系是否有助于EF-IDILI的发病机制的报道。这些发现改变了我们对糖原越多,免疫刺激活性越强的传统认识。
Epimedii Folium (EF, Epimedium brevicornu Maxim.), a traditional botanical drug, is famous for treating bone fractures, joint diseases, and several chronic illnesses. However, some studies indicated that EF could induce idiosyncratic drug-induced liver injury (IDILI) in the clinic. The NLRP3 inflammasome plays a crucial role in the pathogenesis of various human diseases, including IDILI. In the present study, we showed that epimedin B could specifically facilitate nigericin- or ATP-induced NLRP3 inflammasome activation under synergistic induction of mitochondrial reactive oxygen species. Moreover, epimedin B resulted in activation of Caspase-1 and IL-1β secretion in a lipopolysaccharide (LPS)-mediated susceptibility mouse model. MCC950 pretreatment completely abrogated activation of the NLRP3 inflammasome and prevented liver injury. Importantly, several studies have confirmed that some active constituents of EF could enhance activation of the NLRP3 inflammasome and may be involved in the pathogenesis of EF-IDILI. No reports are available on whether the structure-activity relationship associated with the immunostimulatory activity in EF contributes to the pathogenesis of EF-IDILI. These findings have changed our conventional understanding about the more glycogen, the more immunostimulatory activity.
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