APP下载

红茂草异紫堇碱对LPS诱导小鼠RAW 264.7细胞炎症因子的影响

2020-03-31王霞王廷璞袁毅君高义霞王鹏赵强赵仁生

安徽农业科学 2020年4期

王霞 王廷璞 袁毅君 高义霞 王鹏 赵强 赵仁生

摘要[目的]研究红茂草异紫堇碱对细菌脂多糖( lipopolysaccharide,LPS)诱导RAW 264.7细胞释放炎性因子的影响。[方法]用CCK-8试剂盒方法检测不同剂量红茂草异紫堇碱(1、5、15、25、50、100、200、300和400 μg/mL)对RAW 264.7细胞的毒性作用;用硝酸酶还原法测定不同浓度红茂草异紫堇碱(50、100、200和400 μg/mL)条件下细胞培养液中NO的浓度;用ELISA法测定添加不同浓度红茂草异紫堇碱(100、200和400 μg/mL)干预4 h,再加入LPS(0.1 μg/mL)孵育20 h后细胞培养液中IL-1β、IL-6、IL-10、PEG-2和TNF-α的含量,通过上述方法测定的结果来评价红茂草异紫堇堿的抗炎作用。[结果]红茂草异紫堇碱浓度在15、25 μg/mL时,可显著促进RAW 264.7细胞增殖(P≤0.05);并且在红茂草异紫堇碱存在条件下,促炎因子IL-1β、IL-6、PEG-2和TNF-α释放量都有不程度的降低,而抗炎因子IL-10和NO的释放量有不同程度的升高。[结论]红茂草异紫堇碱能够抑制促炎因子IL-1β、IL-6、PEG-2和TNF-α的释放;另一方面能够促进抗炎因子IL-10和NO的释放来抑制LPS诱导的RAW 264.7细胞炎症反应。

关键词红茂草异紫堇碱;RAW 264.7细胞;LPS;细胞炎症因子

中图分类号R285.5文献标识码A文章编号0517-6611(2020)04-0178-03

doi:10.3969/j.issn.0517-6611.2020.04.051

开放科学(资源服务)标识码(OSID):

Effects of Isocorydine Alkaloid in Dicranostigma leptopodum (Maxim.) Fedde(DLF)on Inflammatory Factors in RAW264. 7 Cells Stimulated by LPS

WANG Xia,WANG Ting-pu,YUAN Yi-jun et al

(College of Bioengineering and Technology, Tianshui Normal University, Tianshui,Gansu 741001)

Abstract[Objective] To study the effects of isocorydine alkaloid in Dicranostigma leptopodum (Maxim.) Fedde (DLF) on secretion of inflammatory factors in RAW 264.7 cell stimulated by lipopolysaccharide,LPS. [Method]Toxic effect on RAW 264.7 cell with different doses of isocorydine alkaloid in DLF ( 1, 5, 15, 25, 50, 100, 200, 300 and 400 μg/mL) were detected by CCK 8 kit method. The concentration of NO in cell medium added different doses of isocorydine alkaloid in DLF (50, 100, 200 and 400 μg/mL) were detected by the enzyme nitrate reduction method. After pretreated with various concentration of isocorydine alkaloid in DLF(100, 200 and 400 μg/mL) 4 h. The cell were exposed to 0.1 μg/mL LPS for 20 h. The activity of interleukin 6(IL-6)、10(IL-10) and 1β(IL-1β), PEG-2 and tumor necrosis factor α(TNF-α) as well as NO by ELISA and an Nitrate acid reductase. The anti-inflammatory effect was evaluated by above method. [Result] Concentration of isocorydine alkaloid in DLF were 15 and 25 μg/mL, which could promote RAW 264.7 cells proliferation significantly (P≤0.05). Isocorydine alkaloid in DLF increased the secretion of IL-10 and NO as well as reduced IL-1β,IL-6,PEG-2 and TNF-α in LPS-induced RAW 264.7 cells. [Conclusion] The anti-inflammatory effectory of isocorydine alkaloid in LDF may be mediated in part of by promoting IL-10 and NO and inhibiting the production of IL-1β,IL-6,PEG-2 and TNF-α.

Key wordsIsocorydine alkaloid in DLF;RAW 264.7 cells;LPS;Inflammatory factors

红茂草[Dicranostigma leptopodum(Maxim.)Fedde,DLF] 罂粟科秃疮花属二年生或多年生草本植物,俗称秃子花、秃疮花、勒马回(陕西),主要分布在云南西北部、四川西部、西藏、青海东部、甘肃南部及东南部、陕西秦岭北坡、山西南部、河南西部、河北西南部,生于海拔400~2 900 m草坡、路边、田埂、墙头或屋顶[1]。《陕西中草药》记载:“味苦、涩、性凉、清热解毒,消肿,止痛,杀虫。治扁桃体炎,牙痛,咽喉痛,淋巴结核,秃疮,疮疖疥癣,痈疽”[2]。红茂草生物碱主要包括异紫堇碱、紫堇碱、原阿片碱和百屈菜碱,其中异紫堇碱的含量最高[3]。……

登录APP查看全文