检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:付雪娇[1] 王桂萍[1] 张秀[1] 邹坤[1] 陈剑锋[1]
机构地区:[1]天然产物研究与利用湖北省重点实验室 三峡大学化学与生命科学学院,443002
出 处:《天津医药》2013年第2期105-109,共5页Tianjin Medical Journal
基 金:国家自然基金资助项目(项目编号:21272136);湖北省教育厅自然科学基金资助项目(项目编号:Q20111201)
摘 要:目的探讨排风藤叔胺生物碱类小分子化合物SCE-1体外对白细胞介素(IL)-6、IL-1β、肿瘤坏死因子(TNF)-α活性的抑制作用。方法利用细菌脂多糖(LPS)刺激经佛波酯(PMA)诱导的人单核细胞THP-1建立体外炎症模型,四甲基偶氮唑盐微量酶反应比色法(MTT)检测SCE-1的细胞毒性,酶联免疫吸附测定法(ELISA)检测药物干预前后上清液中IL-6、IL-1β和TNF-α的分泌量,综合评价化合物SCE-1对前炎性细胞因子的抑制作用。结果与模型组比较:(1)12.5-800mg/L的SCE-1显著抑制了IL-6产生(均P〈0.01),其半抑制浓度(IC50)值为11.82mg/L,且抑制作用具有时间和剂量依赖性。(2)200-800mg/L的SCE-1对TNF-α的分泌具抑制效应,且呈一定的剂量依赖性,差异有统计学意义(P〈0.05或P〈0.01),800mg/LSCE-1作用2h抑制率可达53.13%。(3)400-800mg/L的SCE-1促进了IL-1β的分泌,差异有统计学意义(均P〈0.01)。结论化合物SCE-1的发现为开发高效、低毒、特异的小分子IL-6抑制剂提供了一个较好的先导化合物。Objective To evaluate the inhibitory, effects of a novel tertiary alkaloids small molecule from Solanum ca- thayanum, SCE-1, on interleukin (IL-6), IL-1β and tumor necrosis factor (TNF)-α in vitro. Methods The inflammation model in vitro was established by lipopolysaccharide (LPS)-stimulated phrobol 12-myristate 13-acetate (PMA)-differentiated THP-1 macrophage. The cytotoxieity of SCE-1 was determined by the mitochondrial-respiration-dependent3-(4,5-dimethyl- thiazo1-2-yl) -2,5-diphenyltetrazolium (MTT) reduction method. The antagonism activity on proinflammatory cytokine such as IL-6, IL-β and TNF-ct in cell culture medium were determined by enzyme-linked immunosorbent assay (ELISA) meth- od. The inhibitory effect on proinflammatory cytokine of compounds SCE-1 was evaluated. Results Compared with the con- trol group, (1) the SCE-1(12.5-800 mg/L) showed a significant inhibitory effect in dose- and time-dependent manner on the production of IL-6 (P 〈 0.01) with an IC50 of 11.82 mg/L; (2) the SCE-1 (200-800 mg/L) decreased the production of TNF-α (P 〈 0.05 or P 〈 0.01), and the inhibition rate was 53.13% at a concentration of 800 mg/L and for 2-h treatment; (3) the SCE-1 (400-800 mg/L) significantly increased the production of IL-1β (P 〈 0.01). Conclusion The discovery of this com- pound provided a potential lead compound for the development of small molecule IL-6 inhibitor with high efficiency and low toxicity.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.188.211.44