Page 19 - 2021年15期
P. 19
·药学研究·
杨桃根活性成分对高糖诱导H9c2心肌细胞损伤的改善作用及机制 Δ
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高雨桐 ,吴娅妮 ,陈 铭 ,张晓琳 ,韦秀莎 ,韦晓洁 ,黄仁彬 (1.广西医科大学药学院,南宁 530021;2.广
西中医药大学基础医学院,南宁 530299)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2021)15-1805-06
DOI 10.6039/j.issn.1001-0408.2021.15.03
摘 要 目的:研究杨桃根活性成分2-十二烷基-6-甲氧基-2,5-二烯-1,4-环己二酮(DMDD)对高糖诱导H9c2 心肌细胞损伤的改
善作用及机制。方法:将H9c2 心肌细胞分为正常组、高糖组、渗透压对照组和DMDD高、中、低浓度组(8、4、2 μmol/L)。正常组和
高糖组细胞分别加入低糖(含5.5 mmol/L葡萄糖,下同)、高糖DMEM培养基(含33.3 mmol/L葡萄糖,下同)培养48 h;渗透压对照
组细胞加入含27.5 mmol/L甘露醇的低糖DMEM培养基培养48 h;DMDD各浓度组细胞先加入高糖DMEM培养基培养24 h,再
加入含相应浓度DMDD的高糖DMEM培养基继续培养24 h。各组细胞培养结束后,采用MTT法检测细胞存活率;采用相应试剂
盒检测细胞上清液中活性氧簇(ROS)、谷胱甘肽过氧化物酶(GSH-Px)、乳酸脱氢酶(LDH)的活性;采用酶联免疫吸附法(ELISA)检
测细胞上清液中肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)的水平;采用吖啶橙/溴化乙锭(AO/EB)染色法检测细胞凋亡情况;
采用Western blot法检测细胞中凋亡相关蛋白[活化的胱天蛋白酶3(cleaved caspase-3)、B细胞淋巴瘤2(Bcl-2)、Bcl-2相关X蛋白
(Bax)]的表达水平以及核因子κB(NF-κB)/NF-κB抑制蛋白α(IκBα)信号通路相关蛋白(NF-κB p65、IκBα)的磷酸化水平。结果:
与正常组比较,高糖组细胞存活率、GSH-Px活性、Bcl-2蛋白表达水平均显著降低(P<0.01);ROS、LDH活性,TNF-α、IL-6水平,
Bax、cleaved caspase-3蛋白表达水平和NF-κB p65、IκBα蛋白磷酸化水平均显著升高(P<0.01);细胞呈橙黄色荧光,且形态模糊
的细胞明显增多,表现出明显的凋亡状态。渗透压对照组细胞上述指标与正常组比较差异无统计学意义。与高糖组比较,DMDD
各浓度组细胞上述指标活性或水平(低浓度组细胞存活率、LDH活性除外)均显著逆转(P<0.05或P<0.01);细胞中橙黄色荧光
明显减少,细胞形态较完整。结论:DMDD 可改善高糖诱导的 H9c2 心肌细胞损伤;其作用机制可能与抑制氧化应激和炎症反
应、调控凋亡相关蛋白和NF-κB/IκBα通路相关蛋白的表达有关。
关键词 2-十二烷基-6-甲氧基-2,5-二烯-1,4-环己二酮;糖尿病心肌病;H9c2心肌细胞;凋亡;NF-κB/IκBα信号通路
Improvement Effect and Its Mechanism of Active Components of Averrhoa carambola on High Glucose-
induced Injury of H9c2 Myocardial Cell
GAO Yutong ,WU Yani ,CHEN Ming ,ZHANG Xiaolin ,WEI Xiusha ,WEI Xiaojie ,HUANG Renbin(1.
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School of Pharmacy,Guangxi Medical University,Nanning 530021,China;2.College of Basic Medicine,
Guangxi University of Chinese Medicine,Nanning 530299,China)
ABSTRACT OBJECTIVE:To study the improvement effects of 2-dodecyl-6-methoxycyclohexa-2,5-diene-1,4-dione(DMDD)
from Averrhoa carambola on H9c2 myocardial cell injury induced by high glucose and its mechanism. METHODS:H9c2
myocardial cells were divided into normal group,high glucose group,osmotic pressure control group,DMDD high,medium and
low concentration groups(8,4,2 μmol/L). Normal group and high glucose group were treated with low glucose DMEM medium
(containing 5.5 mmol/L glucose,similarly hereinafter) and high glucose DMEM medium (containing 33.3 mmol/L glucose,
similarly hereinafter) for 48 h,respectively. The cells in osmotic pressure control group were cultured in low glucose DMEM
medium containing 27.5 mmol/L mannitol for 48 h. In DMDD groups,cells were cultured in high glucose DMEM medium for 24
h, and then in high glucose DMEM medium containing
Δ 基金项目:国家自然科学基金资助项目(No.82004186);广西自 corresponding concentration of DMDD for 24 h. At the end of
然科学基金资助项目(No.2018JJA140966,No.2020JJA140237)
cell culture,MTT method was used to detect the cell survival
*硕士研究生。研究方向:抗糖尿病药、心血管病药。电话:
rate. The activities of ROS, GSH-Px and LDH in cell
0771-5339805。E-mail:591090229@qq.com
# 通信作者:教授,博士生导师。研究方向:抗糖尿病药、肝病和 supernatant were detected by using related kits. ELISA assay
老年痴呆药。电话:0771-5339805。E-mail:huangrenbin518@163.com was used to detect the levels of TNF-α and IL-6 in cell
中国药房 2021年第32卷第15期 China Pharmacy 2021 Vol. 32 No. 15 ·1805 ·