摘要
探索儿茶素对脂多糖(lipopolysaccharide,LPS)诱导的BV-2细胞炎性反应的作用。MTT法观察儿茶素对BV-2细胞增殖的影响;1 mg·L^(-1) LPS处理BV-2细胞建立体外小胶质细胞炎症模型;在该模型下加入儿茶素共孵育后,分别用ELISA法、HE染色和Western blot法检测儿茶素对LPS诱导的BV-2细胞分泌的肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)和白介素1β(interleukin-1β,IL-1β)及细胞形态改变和NF-κB磷酸化的影响。另外,采用transwell法检测不同浓度儿茶素对LPS介导的细胞趋化行为的影响。儿茶素对BV-2细胞无毒性;且与LPS组相比,儿茶素可显著降低LPS引起的BV-2细胞的TNF-α和IL-1β的释放及细胞趋化行为,逆转细胞形态改变,抑制NF-κB的磷酸化。因此,儿茶素能够抑制LPS诱导的BV-2细胞的炎性反应。
The effects of catechin on inflammatory response of BV-2 cells were investigated using the lipopolysaccharide （LPS） model. BV-2 cells were incubated with LPS （1 mg·L^-1） for 12 h in the microglia inflammatory model in vitro. After catechin and LPS co-incubation for 12 h, MTT, ELISA and Western blot were used to detect cell viability, cytokines, cell migration and protein expression. In addition, transwell assay was conducted to investigate the effect of catechin on cell chemokaxis. Catechin did not show any cytotoxicity effect on BV-2 cells, but reversed the change in cell morphology and inhibited the release of TNF-α and IL-1β, cell chemotaxis and phosphorylation of NF-κB/p65. In conclusion, Catechin could inhibit the LPS-induced inflammatory response in BV-2 cells.
出处
《药学学报》
CAS
CSCD
北大核心
2018年第2期244-248,共5页
Acta Pharmaceutica Sinica
基金
国家自然科学基金资助项目(81473577)
山西省卫生计生委科研课题资助项目(201601112)
山西中医药大学校内博士启动基金资助项目(2014BK04)
关键词
儿茶素
脂多糖
BV-2细胞
炎性反应
catechin
lipopolysaccharide
BV-2 cell
inflammatory response
