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1.贵州医科大学 基础医学院,贵阳 550025
2.广州中医药大学 基础医学院,科技创新中心,广州 510405
秦臻,博士,副教授,从事中医药防治心血管疾病的研究,Tel:0851-88174021,E-mail:qinzhen@gmc.edu.cn
黄水清,博士,教授,博士生导师,从事中医药防治心脑血管疾病研究,Tel:021-36585291,E-mail:hsq@gzucm.edu.cn
纸质出版日期:2021-01-20,
网络出版日期:2020-08-31,
收稿日期:2020-06-01,
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秦臻,黄水清,韦正新等.剪切应力环境中当归补血汤对大鼠内皮祖细胞功能的影响[J].中国实验方剂学杂志,2021,27(02):1-7.
QIN Zhen,HUANG Shui-qing,WEI Zheng-xin,et al.Effect of Danggui Buxuetang on Functional Activity of Endothelial Progenitor Cells Exposed to Shear Stress[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(02):1-7.
秦臻,黄水清,韦正新等.剪切应力环境中当归补血汤对大鼠内皮祖细胞功能的影响[J].中国实验方剂学杂志,2021,27(02):1-7. DOI: 10.13422/j.cnki.syfjx.20202104.
QIN Zhen,HUANG Shui-qing,WEI Zheng-xin,et al.Effect of Danggui Buxuetang on Functional Activity of Endothelial Progenitor Cells Exposed to Shear Stress[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(02):1-7. DOI: 10.13422/j.cnki.syfjx.20202104.
目的
2
观察大小不同的层流剪切应力(SS)环境中当归补血汤对大鼠内皮祖细胞(EPCs)功能的影响。
方法
2
制备大鼠骨髓EPCs细胞爬片,置于平行平板层流小室,加载稳定层流SS(0,0.12,1.2,2.4 Pa)6 h后,将不同SS作用下的EPCs随机分为8组,分别为空白组予以无血清培养液灌流、辛伐他汀组予以含0.1 μmol·L
-1
辛伐他汀的培养液灌流、当归补血汤组予以含低、中、高浓度的当归补血汤培养液灌流、抑制剂组则在当归补血汤各浓度组中加入LY294002(共3组),以上各组加载SS 12 h后,检测灌流液中一氧化氮(NO)含量,同时检测细胞增殖、迁移和成小管功能,细胞内皮型一氧化氮合酶(eNOS) mRNA及蛋白激酶B(Akt)的表达。
结果
2
与空白组比较,辛伐他汀及当归补血汤高浓度均可提高不同SS作用下的细胞功能及NO分泌,促进eNOS mRNA及Akt蛋白的表达(
P
<
0.05),而当归补血汤中浓度只能促进SS为0 Pa时的细胞功能及NO,eNOS mRNA,Akt蛋白的表达(
P
<
0.05),抑制剂则阻断当归补血汤高、中浓度对细胞的这些作用。
结论
2
不同的SS环境是影响当归补血汤调节EPCs功能的重要因素之一,SS环境中当归补血汤可通过上调NO/eNOS/Akt表达来维护EPCs的功能。
Objective
2
To investigate the effect of Danggui Buxuetang(DGBX)on the functional activity of rat endothelial progenitor cells(EPCs)exposed to different luminar shear stress (SS).
Method
2
EPCs isolated from rat bone marrow were incubated on a parallel plate flow chamber at a steady SS of 0, 0.12, 1.2, 2.4 Pa for 6 h,then the cells exposed to different SS were randomly divided into 8 groups: control group (perfused with serum free medium),simvastatin group(0.1 μmol·L
-1
simvastatin),3 DGBX groups(low,medium,high-dose DGBX)and 3 inhibitor groups(3 DGBX groups with LY294002). After 12 h,the samples were collected for the detection of cell proliferation ,migration,tubule formation ,the secretion of nitric oxide (NO) ,and the expressions of endothelial nitric oxide synthase(eNOS) mRNA and protein kinase B(Akt),respectively.
Result
2
Compared with the control group,simvastatin and DGBX(high-dose)could both promote the functional activities and NO secretion,and up-regulate the expressions of eNOS mRNA and Akt protein in EPCs exposed to different SS(
P
<
0.05),while DGBX(mid-dose)could do these only at 0 Pa. However,LY294002 could inhibit all effects of DGBX on EPCs.
Conclusion
2
SS seems to play an important role in the effect of DGBX on EPCs,and DGBX could promote the functional activity of EPCs exposed to SS by up-regulating the expressions of NO/eNOS/Akt.
当归补血汤剪切应力内皮祖细胞功能一氧化氮/内皮型一氧化氮合酶/蛋白激酶B
Danggui Buxuetangshear stressendothelial progenitor cellfunctional activitynitric oxide (NO)/endothelial nitric oxide synthase (eNOS)/protein kinase B (Akt)
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