合成环瓜氨酸化蛋白短肽的免疫原性和致关节炎性研究
发布时间:2019-03-04 10:28
【摘要】:目的:构建环瓜氨酸化蛋白短肽诱导性小鼠关节炎模型,探讨该短肽的免疫原性、致关节炎性。方法:36只DBA/1小鼠随机分为3组,于第0天、第21天分别以Ⅱ型胶原(CⅡ,CIA)、环瓜氨酸化波形蛋白短肽(CCit-Vim,CCV-IA)和偶联血蓝蛋白(KLH)的环瓜氨酸化波形蛋白短肽(CCit-Vim+KLH,CCV+K-IA)皮下注射。ELISA检测血清抗CⅡ抗体、抗CCit-Vim抗体、抗CCP抗体及TNF-α,间接免疫荧光法(IIF)检测抗大鼠食管角蛋白抗体(AKA),对关节炎指数(AI)、足容积、踝关节病理学进行评价。结果:CCV+K-IA小鼠关节炎发病率为25%(3/12),但关节炎出现时间晚,持续时间短,发病率及关节炎程度均低于CIA;CCV-IA无关节炎发生。CCV+K-IA产生抗CCit-Vim抗体高于CIA(P=0.031),产生抗CCP抗体反而低于CIA(P=0.007)。CCV+K-IA、CCV-IA产生的抗CⅡ抗体水平均低于CIA(P0.05)。CCV+K-IA与CIA的TNF-α高于CCV-IA(P0.05)。CCV+K-IA的AKA阳性率高于其余两组(50%vs CCV-IA 25%、CIA 16.67%)。CCV-IA和CCV+K-IA踝关节病理显示轻度滑膜增生,无滑膜血管翳形成及炎性细胞浸润。结论:偶联KLH的CCit-Vim短肽不仅具有强的免疫原性,而且具有致关节炎性;与CⅡ比较,CCit-Vim+KLH能诱导出更高的AKA阳性率。
[Abstract]:Aim: to construct a mouse arthritis model induced by cyclic citrullinated protein peptide and to explore its immunogenicity and joint inflammation. Methods: 36 DBA/1 mice were randomly divided into three groups. On day 0 and day 21, type 鈪,
本文编号:2434192
[Abstract]:Aim: to construct a mouse arthritis model induced by cyclic citrullinated protein peptide and to explore its immunogenicity and joint inflammation. Methods: 36 DBA/1 mice were randomly divided into three groups. On day 0 and day 21, type 鈪,
本文编号:2434192
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