中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (26): 4161-4167.doi: 10.12307/2023.121

• 血管组织构建 vascular tissue construction • 上一篇    下一篇

亚砷酸钠对人脐静脉内皮细胞损伤及鞘氨醇激酶1/1-磷酸鞘氨醇信号轴的影响

方兴艳1,田侦丽1,赵哲仪2,文  平3,谢婷婷1   

  1. 1贵州医科大学附属医院临床检验中心,贵州医科大学医学检验学院,贵州省贵阳市  550004;2四川省疾病预防控制中心,四川省成都市  614000;3贵州医科大学附属医院妇产科,贵州省贵阳市  550004
  • 收稿日期:2022-03-14 接受日期:2022-05-13 出版日期:2023-09-18 发布日期:2023-01-28
  • 通讯作者: 谢婷婷,博士,副教授,硕士生导师,贵州医科大学附属医院临床检验中心,贵州医科大学医学检验学院,贵州省贵阳市 550004
  • 作者简介:方兴艳,女,1991年生,贵州省遵义市人,汉族,贵州医科大学在读硕士,主要从事砷中毒机制研究。
  • 基金资助:
    国家自然科学基金项目(81560514),项目负责人:谢婷婷

Effects of sodium arsenite on human umbilical vein endothelial cell injury and sphingosine kinases 1/sphingosine 1-phosphate signaling axis

Fang Xingyan1, Tian Zhenli1, Zhao Zheyi2, Wen Ping3, Xie Tingting1   

  1. 1Center for Clinical Laboratory, the Affiliated Hospital of Guizhou Medical University, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 2Sichuan Center for Disease Control and Prevention, Chengdu 614000, Sichuan Province, China; 3Department of Obstetrics and Gynecology, the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Received:2022-03-14 Accepted:2022-05-13 Online:2023-09-18 Published:2023-01-28
  • Contact: Xie Tingting, MD, Associate professor, Master’s supervisor, Center for Clinical Laboratory, the Affiliated Hospital of Guizhou Medical University, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Fang Xingyan, Master candidate, Center for Clinical Laboratory, the Affiliated Hospital of Guizhou Medical University, School of Clinical Laboratory Science, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81560514 (to XTT)

摘要:

文题释义:

亚砷酸钠:砷(Arsenic,As)为一种有毒类金属元素。亚砷酸钠为砷的化合物,已被广泛用于砷相关的毒性研究。
1-磷酸鞘氨醇( sphingosine 1-phosphate,S1P) :一种生物活性脂质,由鞘氨醇激酶(sphingosine kinases,SPHK)磷酸化鞘氨醇而成,分泌至胞外与膜表面1-磷酸鞘氨醇受体( sphingosine 1-phosphate receptors,S1PRs) 结合或在胞内作为第二信使调节细胞增殖、凋亡、迁移、黏附、血管生成及血管屏障等,已成为肿瘤、炎症、动脉粥样硬化等多种疾病研究的热点之一。

背景:血管内皮细胞是砷毒作用的关键靶点,砷致内皮细胞损伤的分子机制有待进一步研究。
目的:研究亚砷酸钠对人脐静脉内皮细胞的损伤及鞘氨醇激酶1/1-磷酸鞘氨醇(SPHK1/S1P)信号轴的影响。
方法:分离培养并鉴定人脐静脉内皮细胞,将人脐静脉内皮细胞暴露于含0,5,10,15,20,25 µmol/L亚砷酸钠的培养液 24 h,CCK-8法检测细胞存活率;倒置显微镜观察细胞形态;荧光探针DCFH-DA染色检测细胞内活性氧含量;Annexin V-FITC/PI双标记结合流式细胞术及TUNEL法检测细胞凋亡;ELISA检测细胞内1-磷酸鞘氨醇含量;实时荧光定量 PCR、Western blot 分别检测血管细胞黏附分子1、鞘氨醇激酶1、1-磷酸鞘氨醇受体1的mRNA和蛋白表达。

结果与结论:①与对照组(0 µmol/L亚砷酸钠)相比,随着亚砷酸钠浓度的增加:细胞存活率逐渐降低,且呈剂量-效应关系;细胞融合率逐渐降低,细胞间隙逐渐增宽,脱落漂浮的细胞逐渐增多;细胞内活性氧含量逐渐升高;细胞凋亡率逐渐升高;细胞内1-磷酸鞘氨醇含量逐渐升高;血管细胞黏附分子1、鞘氨醇激酶1 mRNA和蛋白的相对表达量逐渐升高,1-磷酸鞘氨醇受体1 mRNA和蛋白相对表达量逐渐降低。②结果提示,亚砷酸钠诱导的人脐静脉内皮细胞损伤可能与SPHK1/S1P信号轴激活、1-磷酸鞘氨醇受体1下调有关。SPHK1/S1P信号轴可能成为砷致心血管损伤的新靶点。

https:orcid.org/0000-0002-6895-5650(方兴艳)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 亚砷酸钠, 人脐静脉内皮细胞, 氧化应激, 凋亡, 炎症, 鞘氨醇激酶1/1-磷酸鞘氨醇信号轴

Abstract: BACKGROUND: Vascular endothelial cells are the main target of arsenic toxicity and the molecular mechanism of arsenic-induced endothelial cell injury needs to be further studied.
OBJECTIVE: To study the effects of sodium arsenite on human umbilical vein endothelial cell injury and sphingosine kinase 1/sphingosine 1-phosphate signaling axis of human umbilical vein endothelial cells.
METHODS: Human umbilical vein endothelial cells were isolated, cultured, and identified. The cells were treated with 0, 5, 10, 15, 20, 25 µmol/L sodium arsenite for 24 hours. Cell viability was detected by cell counting kit-8. Cell morphology was observed by inverted phase contrast microscope. The content of intracellular reactive oxygen species was detected by fluorescent probe DCFH-DA. Annexin V-FITC/PI double labeling combined with flow cytometry and TUNEL were used to detect apoptosis. The content of sphingosine 1-phosphate in cells was detected by ELISA. The mRNA and protein expressions of vascular cell adhesion molecule-1, sphingosine kinase 1, and sphingosine 1-phosphate were detected by real-time fluorescence quantitative PCR and western blot respectively. 
RESULTS AND CONCLUSION: Compared with the control group (0 µmol/L sodium arsenite), the cell viability decreased gradually along with the increased concentration of sodium arsenite in a dose-dependent manner; the cell fusion rate decreased gradually, the cell gap widened gradually, and the number of exfoliated and floating cells increased gradually; the reactive oxygen species content and apoptosis rate increased gradually; the sphingosine 1-phosphate content in cells increased gradually; the relative mRNA and protein expressions of vascular cell adhesion molecule-1 and sphingosine kinase 1 increased gradually, but the relative mRNA and protein expression of sphingosine kinase 1 decreased gradually. To conclude, sodium arsenite-injured human umbilical vein endothelial cell injury may be related to the activation of sphingosine kinase 1/sphingosine 1-phosphate signaling axis and the downregulation of sphingosine 1-phosphate receptor 1. Sphingosine kinase 1/sphingosine 1-phosphate signaling axis may become a new target of arsenic-induced cardiovascular injury.

Key words: sodium arsenite, human umbilical vein endothelial cell, oxidative stress, apoptosis, inflammation, sphingosine kinase 1/sphingosine 1-phosphate signaling axis

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