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中华口腔医学研究杂志(电子版) ›› 2018, Vol. 12 ›› Issue (01) : 14 -18. doi: 10.3877/cma.j.issn.1674-1366.2018.01.003

所属专题: 文献

基础研究

人牙髓细胞来源外泌体对脐静脉内皮细胞迁移能力的影响
冼雪红1, 龚启梅1, 蒋宏伟1,()   
  1. 1. 510055 广州,中山大学光华口腔医学院·附属口腔医院,广东省口腔医学重点实验室
  • 收稿日期:2017-09-28 出版日期:2018-02-01
  • 通信作者: 蒋宏伟
  • 基金资助:
    广东省自然科学基金(2014A030313166、2017A03031 3713)

The roles of dental pulp cell derived exosomes in human umbilical vein endothelial cells migration

Xuehong Xian1, Qimei Gong1, Hongwei Jiang1,()   

  1. 1. Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
  • Received:2017-09-28 Published:2018-02-01
  • Corresponding author: Hongwei Jiang
  • About author:
    Corresponding author:Jiang Hongwei,Email:
引用本文:

冼雪红, 龚启梅, 蒋宏伟. 人牙髓细胞来源外泌体对脐静脉内皮细胞迁移能力的影响[J]. 中华口腔医学研究杂志(电子版), 2018, 12(01): 14-18.

Xuehong Xian, Qimei Gong, Hongwei Jiang. The roles of dental pulp cell derived exosomes in human umbilical vein endothelial cells migration[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2018, 12(01): 14-18.

目的

探讨牙髓细胞外泌体(DPC-Exos)对脐静脉内皮细胞(HUVEC)迁移能力的影响。

方法

超速离心法分离提纯DPC-Exos,透射电镜和蛋白印迹法(Western blot)进行鉴定;划痕实验和Transwell实验检测DPC-Exos对HUVEC迁移的影响。采用SPSS 20.0软件进行分析,划痕实验迁移率和Transwell实验细胞迁移数采用两独立样本的t检验进行统计。

结果

DPC-Exos呈双层膜包被和茶托样结构,表达CD63膜蛋白标记物。划痕实验结果显示,DPC-Exos作用6 h后HUVEC细胞迁移能力下降26%,差异具有统计学意义(t= 6.534,P<0.001)。Transwell实验结果显示,DPC-Exos作用6 h后HUVEC迁移能力下降32%,差异具有统计学意义(t= 5.846,P<0.001)。

结论

DPC-Exos抑制HUVEC迁移。

Objective

To investigate the effect of dental pulp cell derived exosomes (DPC-Exos) on human umbilical vein endothelial cells (HUVECs) migration in vitro.

Methods

Exosomes were isolated from the supernatant of DPCs cell culture by ultracentrifugation and characterized by transmission electron microscope (TEM) , western blotting. The effect of DPC-Exos on HUVECs migration was examined by wounding healing assay and transwell assay in vitro. Two independent samples t test was used to statistically analyze the migration rate and number of migration cells by SPSS 20.0 software.

Results

The bi-layer membrane and "saucer-like" appearance of DPC-Exos were examined by transmission electron microscopy (TEM) . Western blotting revealed that CD63 was expressed in the DPC-Exos. Wound-healing assay showed significantly reduced migration ability by 26% in HUVECs after treated with DPC-Exos (t= 6.534, P<0.001) . Transwell assay results indicated that DPC-Exos treatment could significantly reduced migration ability of HUVECs by 32% (t= 5.846, P<0.001) .

Conclusion

DPC-Exos could significantly suppress the migration of HUVECs.

图1 透射电镜下牙髓细胞外泌体形态
图2 Western blot检测结果示牙髓细胞外泌体表达CD63
图3 划痕实验观察牙髓细胞外泌体对脐静脉内皮细胞迁移的影响
图4 Transwell实验观察牙髓细胞外泌体对脐静脉内皮细胞迁移的影响
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