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Quality control and immunological activity of lentinan samples produced in China

机译:中国生产的Lentinan样品的质量控制和免疫活性

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Lentinan is widely used as a therapeutic agent for treatment of malignant tumors in clinical practice. The chemical structure of lentinan is highly associated with its biological activity. In this study, the correlation between the structure of lentinan and its immune activity was investigated to assess the function of key parameters that can influence quality control of lentinan. The results showed that the batch-to-batch consistency of two lentinan samples was satisfactory, indicating the stability of production process of lentinan. However, although the chemical composition and triple-helical conformation (THC) of the tested samples were relatively similar, their Mw, polydispersity index (PDI), and Rgz remarkably varied due to different production processes. In vitro immunomodulatory assay reflects that lentinan could stimulate the macrophages phagocytic capacity. Meanwhile, lentinan samples could improve the spleen and thymus indices, promote the proliferation of lymphocytes and adjust for the percentages of CD4+ and CD8+ T cells in vivo. Furthermore, the immunomodulatory effect of lentinan sample B (Mw: 650,700 g/mol) was superior than that of the sample A (Mw: 4,818,700 g/mol). It was noted that the Mw should be detected as a necessary index for quality control of lentinan to ensure stability and effectiveness of the production process. (C) 2018 Published by Elsevier B.V.
机译:香菇多糖被广泛地用作用于在临床实践中治疗恶性肿瘤的治疗剂。香菇多糖的化学结构是高度的生物活性有关。在这项研究中,香菇多糖的结构和它的免疫活性之间的相关性进行了研究,以评估其可影响香菇多糖的质量控制的关键参数的功能。结果表明,2个香菇多糖样品的批与批之间的一致性是令人满意的,这表明香菇多糖生产过程的稳定性。然而,虽然试验样品的化学组成和三螺旋构象(THC)相对相似,它们的分子量,多分散性指数(PDI),并显着地RGZ变化由于不同的生产工艺。在体外免疫测定法反映了香菇多糖能刺激巨噬细胞的吞噬能力。同时,香菇多糖样品可以提高脾和胸腺指数,促进淋巴细胞的增殖和调节用于体内CD4 +和CD8 + T细胞的百分比。此外,蘑菇多糖样品B的免疫调节效应(MW:650700克/摩尔)比样品A的上级(MW:4818700克/摩尔)。据指出,在分子量应该为香菇多糖的质量控制,以保证生产过程的稳定性和有效性的必要的索引来检测。 (c)2018由elestvier b.v出版。

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