中文摘要
银屑病是临床上的常见病、疑难病,既往研究多集中体现在血热、血瘀、血虚等方面的阐述。本课题组从理论、临床、实验三方面总结银屑病的疾病特征,发现本病的发生与中医"毒"、"瘀"致病理论密切相关,提出银屑病"毒蕴瘀结"的发病机制,以解毒消源、祛瘀截末立法,创立"两极阻断学说",拟定中药复方"蜈蚣败毒饮"。通过药物对银屑病模型小鼠、相关因子、细胞活性和基因表达等的前期研究,课题组发现以往围绕Th1/Th2的研究及蜈蚣败毒饮组方可能与Th17细胞有着密切的联系,提出"蜈蚣败毒饮可能通过参与Th17细胞途径而治疗银屑病"的假说。现拟采用转基因银屑病小鼠为模型,探讨蜈蚣败毒饮对Th17细胞、IL-23/IL-17转导通路及相关因子和蛋白的作用,以Western blot法和蛋白质组学技术对相关蛋白进行检测、验证、探索,发现蜈蚣败毒饮在Th17网络中的作用靶点,为蜈蚣败毒饮的理论及实践可行性奠定基础。
英文摘要
Psoriasis is the common and problematic disease in clinical, previous studies mainly limited to the areas of blood heat, blood stasis or blood deficiency, etc. The task group found that the occurrence of psoriasis has a close relationship with pathogenic theory of "poison" and "stasis" of traditional Chinese medicine on the basis of the summarying of the disease characteristics from the three aspects of theory, clinical and experiment, puting forward the pathogenesis of psoriasis of "poison containment and stasis accumulation", estabishing "poles blocking theory" under the guidance of the idea of "detoxication to eliminate the source, removing stasis to cut the end", founding the traditional Chinese medicine named "centipede antiphologistic decoction". Through a large number of preliminary studies of mouse model of psoriasis, related serological factors, cells activity and genes expression, etc, task group found that the research around Th1/Th2 previously and the prescription of centipede antiphologistic decoction might be closely linked with Th17 cell, so proposing the hypothesis of "centipede antiphologistic decoction may participate the Th17 cell pathway to achieve the purpose of treatment of psoriasis". Now ready to adopt the transgenic psoriasis mouse as the object of study, investigating the role of centipede antiphologistic decoction on the Th17, IL-23/IL-17 transduction pathway and the related factors and proteins, at the same time, detecting, verificating and exploring the associated proteins through the methods of western blot and proteomics technology, striving to find the action target point of centipede antiphologistic decoction in the Th17 cellular network, finally, laying the foundation for the feasibility of the theory and practice of centipede antiphologistic decoction.
结题摘要
银屑病是临床上的常见病、疑难病,对银屑病的病机学研究一直是难点和热点。以往主要集中于中医学的“血分”论治,在传统的Th1/Th2漂移方面进行机制学探索。课题组从理论、临床、实验三方面总结银屑病的疾病特征,创新性的提出了“毒蕴瘀结”的发病机制及“两级阻断学说”的银屑病治疗理念,确立了以“解毒消源,祛瘀截末,辅以防变”为主的新治则。在研究内容方面,结合以往在Th1/Th2途径的研究成果,关联到Th17新型T细胞亚群,通过中药蜈蚣败毒饮的干预作用,发现针对于Th17细胞的中医学银屑病的作用靶点,拓展中医学“毒”、“瘀”理论的应用范围。本课题主要分为五个部分:第一部分,成功制备K5.STAT3C转基因银屑病小鼠模型,对小鼠的基因型、表型等进行了鉴定;第二部分,对中药干预模型鼠外周血Th17的表达进行分析,发现中药干预的不典型量-效依赖关系,同时也证明了Th17细胞表达水平变化与皮损△MPASI呈负相关;第三部分,对Th17主要通路因子IL-17、IL-23含量,mRNA表达以及皮损中蛋白含量进行检测,结果证实了蜈蚣败毒饮对上述指标均有一定的抑制作用,尤以高剂量组最为显著,同时与△MPASI均呈负相关;第四部分,对于Th17上游激活因子STAT3、RORγt含量,mRNA表达及蛋白含量进行检测,结果表明蜈蚣败毒饮具有一定的抑制上游激活因子作用;第五部分,采用蛋白质组学技术研究蜈蚣败毒饮作用于模型鼠的差异性蛋白,鉴定到蛋白总数6092个,筛选出蜈蚣败毒饮低剂量组差异蛋白135个、中剂量差异蛋白241个、高剂量差异蛋白252个,结合蛋白质聚类分析结果,筛选出上调蛋白58个、下调蛋白22个,提取蛋白质定量和聚类分析二者的交叉蛋白,结果显示P61458、Q99N91、Q5HZG9、G3UWC2共4个蛋白可能在蜈蚣败毒饮治疗银屑病中发挥重要作用。总之,本课题从造模、Th17细胞本身、Th17主导通路IL-23-Th17-IL-17轴、Th17上游激活因子以及蛋白质组学分析差异蛋白等方面,从横向角度综合分析了蜈蚣败毒饮的作用机制,结合前期Th1/Th2的纵向研究,横纵联合,在探索银屑病机制的同时不断深化中医学理论,为后续研究奠定基础。
