杨爽爽, 许艳妮, 刘鹏, 王潇, 韩小婉, 范卓文, 司书毅. E23869体外对脂代谢的调节作用及机制研究J. 药学学报, 2016,51(4): 563-572. doi: 10.16438/j.0513-4870.2015-0826
引用本文: 杨爽爽, 许艳妮, 刘鹏, 王潇, 韩小婉, 范卓文, 司书毅. E23869体外对脂代谢的调节作用及机制研究J. 药学学报, 2016,51(4): 563-572. doi: 10.16438/j.0513-4870.2015-0826
YANG Shuang-shuang, XU Yan-ni, LIU Peng, WANG Xiao, HAN Xiao-wan, FAN Zhuo-wen, SI Shu-yi. In vitro effect and mechanistic study of compound E23869 on lipid metabolismJ. Acta Pharmaceutica Sinica, 2016,51(4): 563-572. doi: 10.16438/j.0513-4870.2015-0826
Citation: YANG Shuang-shuang, XU Yan-ni, LIU Peng, WANG Xiao, HAN Xiao-wan, FAN Zhuo-wen, SI Shu-yi. In vitro effect and mechanistic study of compound E23869 on lipid metabolismJ. Acta Pharmaceutica Sinica, 2016,51(4): 563-572. doi: 10.16438/j.0513-4870.2015-0826

E23869体外对脂代谢的调节作用及机制研究

In vitro effect and mechanistic study of compound E23869 on lipid metabolism

  • 摘要: 探讨化合物E23869体外对脂代谢的作用及其机制。本研究利用前期已建立的人ATP结合盒转运体A1(ATP-binding cassette transporter A1, ABCA1)和清道夫受体B型I (scavenger receptor class B type I, SR-BI/CLA-1)表达上调剂筛选模型,对20000个化合物进行筛选,获得能上调ABCA1和CLA-1表达的化合物E23869,其上调活性分别为196%和198%, EC50值分别为0.25和0.66 μmol·L-1; Western blotting实验结果表明,在RAW264.7和L02细胞中,活性化合物E23869均能显著上调ABCA1、SR-BI/CLA-1及ATP结合盒转运体G1(ATP-bindingcassette transporter G1, ABCG1)的蛋白水平;体外功能实验证实, E23869能有效地抑制巨噬细胞泡沫化和促进细胞内胆固醇外排。进一步研究表明,化合物E23869能通过部分激活PPARα和PPARγ从而上调ABCA1、SR-BI/CLA-1和ABCG1的表达,并且对前脂肪细胞3T3-L1诱导分化的作用较弱。总之,化合物E23869能够上调ABCA1和SR-BI/CLA-1活性,并且具有较好的体外调节脂代谢的作用,为新型调血脂药物的先导化合物。

     

    Abstract: This study was designed to identify inducers of ATP-binding cassette transporter A1(ABCA1) and CD36 and lysosomal integral membrane protein-II analogous-1(CLA-1) and to evaluate the in vitro effect of the active compound on lipid metabolism. Among 20000 compounds screened, E23869 was found as a positive hit using cell-based high throughput screening models. The up-regulating activities of E23869 in ABCA1p-LUC and CLA-1p-LUC HepG2 cells were 196% and 198%, respectively. The EC50 values of E23869 in ABCA1p-LUC and CLA-1p-LUC HepG2 cells were 0.25 μmol·L-1 and 0.66 μmol·L-1, respectively. E23869 significantly upregulated the protein levels of ABCA1, scavenger receptor class B type I (SR-BI)/CLA-1 and ATP-binding cassette transporter G1(ABCG1) in both macrophages RAW264.7 and L02 cells by Western blotting analysis. Foam cell assay showed that E23869 inhibited lipids accumulations in macrophages RAW264.7. Cholesterol efflux assay showed that E23869 induced HDL-mediated cholesterol efflux in macrophages RAW264.7. Moreover, E23869 up-regulated ABCA1, SR-BI/CLA-1 and ABCG1 expressions through activation of PPARα and PPARγ. In addition, E23869 weakly promoted in vitro differentiation of mouse preadipocytes 3T3-L1. In conclusion, E23869 up-regulated ABCA1, SR-BI/CLA-1 and ABCG1 expressions to promote cholesterol efflux, which is a good leading compound for regulation of lipid metabolism.

     

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