基于非靶向代谢组学的APP/PS1小鼠与认知功能障碍相关的生物标志物发现及黄连解毒汤干预机制研究  

Biomarkers related to cognitive dysfunction in APP/PS1 mice based on non-targeted metabonomics and intervention mechanism of Huanglian Jiedu Decoction

作　　者：王琳娜 顾欣如 司南[1] 王宏洁[1] 周严严[1] 边宝林[1] 赵海誉[1] WANG Lin-na;GU Xin-ru;SI Nan;WANG Hong-jie;ZHOU Yan-yan;BIAN Bao-lin;ZHAO Hai-yu(Institute of Chinese Materia Medica,China Academy of Chinese Medical Sciences,Beijing 100700,China)

机构地区：[1]中国中医科学院中药研究所,北京100700

出　　处：《中国中药杂志》2022年第22期6117-6126,共10页China Journal of Chinese Materia Medica

基　　金：国家自然科学基金项目(81974523);国家中医药管理局青年岐黄学者项目(2021);中央级公益性科研院所基本科研业务费课题(ZXKT21022);杭州市钱江特聘专家项目(2020)。

摘　　要：该研究旨在通过对APP/PS1转基因小鼠内源性物质进行非靶向代谢组学研究,发现APP/PS1小鼠模型与认知功能障碍相关的生物标志物,寻找黄连解毒汤(Huanglian Jiedu Decoction)治疗阿尔茨海默病(Alzheimer′s disease, AD)的作用靶点并阐明其作用机制。通过超高效液相色谱串联静电场轨道阱高分辨质谱(UPLC-Orbitrap MS)技术分析小鼠脑组织和血清代谢质谱,运用偏最小二乘法判别分析(PLS-DA)、正交偏最小二乘法判别分析(OPLS-DA)对比分析正常组、模型组、黄连解毒汤高剂量组、黄连解毒汤低剂量组、小檗碱组的代谢数据,筛选潜在生物标志物,并借助KEGG数据库分析构建相关代谢通路。共筛选鉴定出脑内13种、血清35种,共计45种潜在内源性代谢物,其中白三烯B4、酪氨酸和腺苷有望成为与认知功能关联的差异性代谢物。黄连解毒汤可以回调22种差异性代谢物,涉及的主要代谢通路有氨酰-tRNA生物合成,缬氨酸、亮氨酸和异亮氨酸生物合成,泛酸和辅酶A生物合成,苯丙氨酸、酪氨酸和色氨酸生物合成,花生四烯酸代谢。这些通路主要提示了黄连解毒汤干预AD的主要作用机制为抑制中枢和外周炎症,调节能量代谢、脂肪酸代谢和氨基酸代谢。黄连解毒汤对改善认知功能障碍有一定疗效,可通过回调内源性差异代谢物来调控相关通路,这将有助于进一步发现AD的生物标志物和阐明黄连解毒汤治疗AD的干预机制。Through the non-targeted metabonomics study on endogenous substances in APP/PS1 transgenic mice, this paper aimed to discover biomarkers related to APP/PS1 mice with cognitive dysfunction, and find targets of Huanglian Jiedu Decoction(HLJDD) in the treatment of Alzheimer′s disease(AD) and its mechanism. The brain tissue and serum metabolic mass spectrometry of mice were analyzed by ultra-high performance liquid chromatography-Orbitrap mass spectrometry(UPLC-Orbitrap MS). Through partial least squares-discriminant analysis(PLS-DA) and orthogonal partial least squares-discriminant analysis(OPLS-DA), the metabolic data of the normal group, the model group, the high-dose and low-dose HLJDD groups, and the berberine group were compared and analyzed to screen out potential biomarkers, and the relevant metabolic pathways were constructed with the help of the Kyoto Encyclopedia of Genes and Genomes(KEGG) database. Forty-five potential endogenous metabolites were identified, including 13 in brain and 35 in serum, among which leukotriene B4, tyrosine, and adenosine were expected to be differential metabolites related to cognitive function. HLJDD recalled 22 differential metabolites, and the pathways mainly involved in aminoacyl-tRNA biosynthesis, valine, leucine and isoleucine biosynthesis, pantothenic acid and coenzyme A biosynthesis, phenylalanine, tyrosine and tryptophan biosynthesis, and arachidonic acid metabolism. These pathways suggested that the main mechanism of HLJDD in the intervention of AD was to inhibit central and peripheral inflammation, and regulate energy metabolism, fatty acid metabolism, and amino acid metabolism. HLJDD has a certain effect on the improvement of cognitive dysfunction, and regulates relative pathways by recalling endogenous differential metabolites, which helps to further discover the biomarkers of AD and clarify the intervention mechanism of HLJDD in the treatment of AD.

关 键 词：非靶向代谢组学 阿尔茨海默病 黄连解毒汤 生物标志物 干预机制 

分 类 号：R285.5[医药卫生—中药学]