紫草多糖的分离纯化及生物活性研究

目的：研究紫草多糖的提取、分离与纯化方法,并初步探讨其生物活性。方法：采用蒸馏水提取、乙醇分级沉淀、Sephadex凝胶柱色谱分离、纯化获得紫草多糖,由HPLC确定其相对分子质量和质量分数;建立荧光定量PCR检测方法,将实验分为生理盐水组和8个不同剂量紫草多糖组,观察与疣体组织作用后,抗HPV效果。结果：经HPLC检测,该组分为两个分子量的多糖,其重均分子量分别为27336、1152。生物活性检测结果表明,紫草粗多糖具有体外抑制HPV-DNA活性,最低有效浓度为0.781mg/ml。结论：本方法提取的紫草多糖为含两个分子量的多糖混合物,具有明显的抗人乳头瘤病毒作用。

Isolation,Purification and Biological Activities of Arnebia euchroma Glycosaminoglycans

OBJECTIVE: To study the methods of extraction, isolation, purification and biological activities of Arnebia euchroma glycosaminoglycans (AEG). METHODS: AEG was purified by distilled water extraction, ethanol fractionation, Sephadex column chromatography. The purity and molecular weight and concentration of AEG were measured by HPLC; We divided the experiment into Physiological Saline group and the other eight groups with different doses of AEG, established RT-PRC method to observe the anti-HPV effect after their actions on the verruca tissues. RESULTS: Using HPLC, the group of AEG was divided into two glycosaminoglycans with different molecular weight as 27336 and 1152. Bioassay results showed that AEG had anti-HPV-DNA activity, the lowest effective concentration was 0.781 mg/ml. CONCLUSION: AEG extracted by this method is a mixture with two molecular weight glycosaminoglycans, and has obvious anti-HPV effect.