基于谱-效相关分析的雷公藤致肝毒性物质基础的初步研究

基于谱-效相关分析方法,筛选雷公藤致肝毒性的主要成分,为提升雷公藤类药材质量控制方法提供参考。该研究以中药雷公藤为研究对象,采用LC-Q-TOF-MS技术表征不同产地雷公藤样品的化学成分,并结合文献初步指认其主要成分;以正常人肝细胞(LO2细胞系)为模型,对乙酰氨基酚为阳性药,细胞毒价为评价指标,采用简单相关分析及多元线性相关分析方法,筛选雷公藤致肝毒性的主要成分。该研究共指认出雷公藤药材中的10种主要成分,基于谱-效相关分析发现雷公藤甲素可能是毒性成分,与传统文献报道一致,多元线性相关分析还发现雷公藤红素,demethylzeylasteral可能对肝毒性贡献较大;此外研究中还发现不同品种、不同产地雷公藤样品质量差异较大,产于西南地区的雷公藤药材肝毒性相对较低,产于湖南、安徽的2批雷公藤肝毒性相对较高。该研究可为今后雷公藤药材的合理利用及雷公藤致肝细胞毒性研究提供数据支持。

Preliminary study on effective components of Tripterygium wilfordii for liver toxicity based on spectrum-effect correlation analysis

In this paper, the spectrum-effect correlation analysis method was used to explore the main effective components of Tripterygium wilfordii for liver toxicity, and provide reference for promoting the quality control of T. wilfordii. Chinese medicine T.wilfordii was taken as the study object, and LC-Q-TOF-MS was used to characterize the chemical components in T. wilfordii samples from different areas, and their main components were initially identified after referring to the literature. With the normal human hepatocytes (LO2 cell line)as the carrier, acetaminophen as positive medicine, and cell inhibition rate as testing index, the simple correlation analysis and multivariate linear correlation analysis methods were used to screen the main components of T. wilfordii for liver toxicity. As a result, 10 kinds of main components were identified, and the spectrum-effect correlation analysis showed that triptolide may be the toxic component, which was consistent with previous results of traditional literature. Meanwhile it was found that tripterine and demethylzeylasteral may greatly contribute to liver toxicity in multivariate linear correlation analysis. T. wilfordii samples of different varieties or different origins showed large difference in quality, and the T. wilfordii from southwest China showed lower liver toxicity, while those from Hunan and Anhui province showed higher liver toxicity. This study will provide data support for further rational use of T. wilfordii and research on its liver toxicity ingredients.