中文摘要：

目的利用小鼠脾细胞实验建立的免疫活性研究平台,进一步阐明含噻唑烷-4-酮环类核苷的免疫增强活性,并评价其作为药物的潜在开发价值。方法通过体外细胞学实验观察含噻唑烷-4-酮环糖类衍生物CH1a、CH2a、CH1b和CH2b对丝裂原[刀豆蛋白A（Con A）、脂多糖（LPS）]处理的脾淋巴细胞增殖能力的影响,用酶联免疫吸附测定（ELISA）法检测CH1a、CH2a、CH1b、CH2b对淋巴细胞产生的细胞因子白细胞介素（IL）-2、IL-4和γ干扰素（IFN-γ）的影响。所有实验指标均与免疫调节药匹多莫德比较。结果化合物CH1a、CH2a、CH1b和CH2b均可增强ConA处理脾细胞的增殖能力,与匹多莫德比较差异有统计学意义（P〈0.01）;CH1b和CH2b可促进LPS处理的脾细胞增殖,作用明显强于匹多莫德（P〈0.01）,化合物CH1a、CH2a无明显促进LPS处理脾细胞的增殖（P〉0.05）。CH1a、CH2a、CH1b和CH2b均可明显促进细胞因子IL-2和IL-4的增殖,与匹多莫德比较差异有统计学意义（P〈0.01）。对于IFN-γ,CH1a、CH2a、匹多莫德可明显促其增殖（P〈0.01）,而CH1b和CH2b对IFN-γ的增殖影响不大。结论含噻唑烷-4-酮类核苷CH1a、CH2a、CH1b、CH2b对小鼠的免疫活性具有较好的增强作用,有可能成为潜在的免疫调节佐剂。

英文摘要：

Objective To further illustrate the immunostimulating activity of the nucleosides containing thiazolidin-4-one ring,and evaluate the potential value as a drug.Methods The influence of thiazolidin-4-one derivates CH1a,CH2a,CH1b or CH2b on the proliferation of spleen lymphocyte treated by mitogens（ConA,LPS） was observed by cytology experiment in vitro.Using mice ELISA kit,the levels of the cytokines,such as interleukin-4（IL-4）,IL-2,and interferon-γ（IFN-γ） were detected from the supernatant of cell cultures.All test indexes were compared with pidotimod.Results CH1a,CH2a,CH1b or CH2b significantly promoted proliferation of Con A-induced T cells at certain concentrations,as compared with pidotimod（P〈0.01）.CH1b and CH2b significantly enhanced proliferation of LPS-induced splenocytes as compared with pidotimod（P〈0.01）.CH1a and CH2a did not significantly increase the proliferation of LPS-induced splenocytes（P〈0.05）.As compared with Con A alone or pidotimod,a combination of Con A and CH1a,CH2a,CH1b or CH2b significantly increased the levels of IL-2 and IL-4 secretion（P〈0.01）.CH1a,CH2a and pidotimod significantly increased the secretion level of IFN-γ（P〈0.01）,while CH1b and CH2b had no effects on IFN-γ secretion.Conclusion The nucleoside containing thiazolidin-4-one ring（CH1a,CH2a,CH1b and CH2b） have certain activity of immunostimulating in mice and hold a potential as immunomodulators.