温石棉对内皮细胞Wnt5a、p16和p21表达的影响  

Effects of chrysotile on expression of Wnt5a,p16 and p21 in endothelial cells

作　　者：李莘[1,2] 李雪 王谙 LI Xin;LI Xue;WANG An(Department of Pathology,Tianjin Haihe Hospital,Tianjin 300350,China;Tianjin Key Laboratory of Lung Regenerative Medicine;Tianjin Institute of Respiratory Diseases,Tianjin Haihe Hospital)

机构地区：[1]天津市海河医院病理科,300350 [2]天津市呼吸疾病研究所 [3]天津市海河医院基础医学实验部

出　　处：《天津医药》2024年第7期679-682,共4页Tianjin Medical Journal

基　　金：天津市教委科研计划项目(2022YGYB14)

摘　　要：目的探讨温石棉对人脐静脉内皮细胞(HUVECs)的影响。方法实验组以50、100、200 mg/L温石棉纤维液刺激HUVECs 24、48、72 h,对照组仅加RPMI 1640培养基培养细胞,观察细胞形态变化,β-半乳糖苷酶法分析细胞衰老情况,四甲基偶氮唑蓝法检测细胞存活率。采用实时荧光定量PCR法检测细胞中Wnt5a、p16和p21 mRNA的表达情况。结果实验组HUVECs多呈梭形,部分呈圆形或不规则形,出现裸核及空泡现象,可见死亡细胞。随温石棉质量浓度及暴露时间的增加,细胞活性逐渐降低,衰老细胞逐渐增多。100 mg/L温石棉处理HUVECs 24 h时,细胞生长较活跃。与对照组相比,实验组Wnt5a、p16和p21 mRNA表达水平均增高(P<0.05)。结论温石棉可促进HUVECs衰老,Wnt5a、p16和p21参与此过程。Objective To investigate the influence of chrysotile on human umbilical vein endothelial cells(HUVECs).Methods HUVECs in the experimental group were treated with 50,100 and 200 mg/L chrysotile for 24,48 and 72 h.The control group was cultured with RPMI 1640 medium only.Morphological changes of HUVECs were observed.Cell viability was detected by MTT assay.β-Galactosidase staining was used to analyze the cell senescence.The cell survival rate was determined by tetramethylazolium blue assay.Wnt5a,p16 and p21 expression were investigated by qRT-PCR.Results Cells of the experimental group were oval and irregular,and some of them were round or irregular,with naked nuclei and vacuolar,and dead cells were present.With the increase of chrysotile concentration and exposure time,the level of cell viability decreased and the number of aged cells increased gradually(P<0.05).The cell growth of HUVECs was more active when 100 mg/L chrysotile treated for 24 h.Compared with the control group,the mRNA expression levels of Wnt5a,p16 and p21 were increased in the experimental group(P<0.05).Conclusion Chrysotile can promote HUVECs senescence,and Wnt5a,p16 and p21 are involved in this mechanism.

关 键 词：石棉 蛇纹石 人脐静脉内皮细胞 肺纤维化 Wnt-5a蛋白 基因 p16 基因 p21 

分 类 号：R563.9[医药卫生—呼吸系统]