【摘要】 目的海马是一种具有抗衰老、抗疲劳及抗肿瘤的中药,迄今对其分子作用机制不十分清楚。肌醇磷脂激酶(PI4-K)作为PI信号通路中起重要作用的激酶,位于信号通路的上游,应是寻找新药十分关键的靶分子。方法利用人红细胞膜内翻外的技术,将存在于细胞膜内侧的肌醇磷脂激酶(PI4-K)暴露在外,成为IOV-PI4-K抗原蛋白;用IOV-PI4-K抗原蛋白与其PI4-K单克隆抗体(A6D)的ELISA检测技术,对海马提取物进行了初步研究。结果从海马提取物中筛选出了对PI4-K与抗体活性亲和力具有上调或下调作用的两种不同组分,提示在这二种组分里可能存在有不同的分子对PI4-K有着上调或下调的作用。结论从上述二种组分里有可能开发出治疗肿瘤和抗衰老的药物。这一筛选方法也可为今后的药物筛选提供一种新的思路。更多还原

【Abstract】 Objective The hippocampus has been used in Chinese medicine for a long time.Although it has the anti-decrepitude,anti-fatigue and anti-tumor effect,the molecular mechanism is not yet known.PI4-K,the first protein kinase in the PI pathway,should be the target molecular for drug screening.Methods We prepared antigen protein IOV-PI4-K through inside-out ghost,then the antibody-antigen reaction between IOV-PI4-K and its antibody A6D was tested by ELISA.Results Two different function groups,which could increase or decrease the binding affinity of PI4-K to its antibody,were screened out from the extracts of hippocampus.This fact indicated that there might be two different components to up-regulate or down-regulate the activity of PI4-K respectively.Conclusion Derivatives of the components could be developed into anti-tumor or anti-decrepitude drugs.Meanwhile,a new way for performing drug screen through ELISA was established.更多还原