中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (19): 3043-3047.doi: 10.12307/2022.384

• 牙髓及牙周膜干细胞 Dental pulp and periodontal ligament stem cells • 上一篇    下一篇

不同fimA基因型牙龈卟啉单胞菌对人脐静脉内皮细胞分泌相关蛋白及细胞因子的影响

李  琨1,安  婕2,董素阁1,崔丽丽1,刘  蕾1,李婷婷1   

  1. 1郑州大学第五附属医院口腔科,河南省郑州市   450052;2荷兰拉德堡德大学,奈梅亨  6525GA
  • 收稿日期:2020-11-23 修回日期:2021-02-27 接受日期:2021-08-25 出版日期:2022-07-08 发布日期:2021-12-28
  • 通讯作者: 安婕,博士,研究员,荷兰拉德堡德大学,奈梅亨 6525GA
  • 作者简介:李琨,女,1972年生,湖南省邵阳市人,苗族,副主任医师,主要从事口腔修复与种植方面的研究。
  • 基金资助:
    河南省高等学校重点科研项目计划(教育厅)(14A320020),项目负责人:李琨

Effects of different fimA genotypes of Porphyromonas gingivalis on the secretion related proteins and cytokines in human umbilical vein endothelial cells

Li Kun1, An Jie2, Dong Suge1, Cui Lili1, Liu Lei1, Li Tingting1   

  1. 1Department of Stomatology, Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China; 2Radboud University, Nijmegen 6525GA, The Netherlands
  • Received:2020-11-23 Revised:2021-02-27 Accepted:2021-08-25 Online:2022-07-08 Published:2021-12-28
  • Contact: An Jie, MD, Researcher, Radboud University, Nijmegen 6525GA, The Netherlands
  • About author:Li Kun, Associate chief physician, Department of Stomatology, Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • Supported by:
    the Key Scientific Research Project Plan of Higher Education Institutions in Henan Province (Education Department), No. 14A320020 (to LK)

摘要:

文题释义:
牙龈卟啉单胞菌:在动脉粥样硬化型心血管疾病患者股骨动脉、冠状动脉内可检出600种以上口腔菌群,其中牙龈卟啉单胞菌约占80%。牙龈卟啉单胞菌是当前研究广泛且证据充足的重要牙周致病菌之一,且近年发现牙龈卟啉单胞菌感染是动脉粥样硬化的一个新的独立危险因素。
单核细胞趋化蛋白1:由76个氨基酸组成的单肽链,它既具有特异的单核细胞趋化活性,也具有激活单核细胞的活性,在机体防御、炎症恢复和抗肿瘤等方面起着重要作用。

背景:牙龈卟啉单胞菌感染是近年发现与动脉粥样硬化等多种疾病发生有关的危险因素,但不同fimA基因型的牙龈卟啉单胞菌致病能力不同,积极探明牙龈卟啉单胞菌高危菌株对于完善动脉粥样硬化诊疗机制具有重要作用。
目的:探讨不同fimA基因型牙龈卟啉单胞菌对人脐静脉内皮细胞分泌单核细胞趋化蛋白1、白细胞介素6、内皮素1/一氧化氮的影响。
方法:厌氧条件下对Ⅳ、Ⅱ、ⅠfimA基因型牙龈卟啉单胞菌进行培养,应用感染复数值为100感染人脐静脉内皮细胞,同时设阳性对照组为牙龈卟啉单胞菌脂多糖刺激人脐静脉内皮细胞、阴性对照组人脐静脉内皮细胞仅加细胞培养液培养。采用酶联免疫吸附法检测各组培养2,6,24 h后人脐静脉内皮细胞培养上清液中单核细胞趋化蛋白1、白细胞介素6、内皮素1/一氧化氮水平。
结果与结论:除阴性对照组外,其他4组人脐静脉内皮细胞培养上清液中白细胞介素6、内皮素1/一氧化氮、单核细胞趋化蛋白1水平逐渐增高,且ⅣfimA基因型刺激组白细胞介素6、内皮素1/一氧化氮水平高于Ⅱ、ⅠfimA基因型刺激组及阳性对照组、阴性对照组(P < 0.05);ⅡfimA基因型刺激组单核细胞趋化蛋白1水平高于Ⅳ、ⅠfimA基因型刺激组、阴性对照组(P < 0.05)。结果表明,不同fimA基因型牙龈卟啉单胞菌刺激人脐静脉内皮细胞功能紊乱机制存在一定差异,Ⅱ、Ⅳ fimA基因上调单核细胞趋化蛋白1、白细胞介素6、内皮素1/一氧化氮分泌能力较强,可能在引起血管内皮细胞功能紊乱中占主导地位。

https://orcid.org/0000-0003-4690-186X (李琨) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 人脐静脉内皮细胞, 牙龈卟啉单胞菌, fimA基因型, 单核细胞趋化蛋白1, 白细胞介素6, 内皮素1

Abstract: BACKGROUND: Porphyromonas gingivalis infection is a risk factor that has been found to be related to atherosclerosis and other diseases in recent years. However, different fimA genotypes of Porphyromonas gingivalis have different pathogenic abilities. Actively explore Porphyromonas gingivalis high-risk bacterial strains play an important role in improving the diagnosis and treatment mechanism of atherosclerosis.  
OBJECTIVE: To investigate the effects of different fimA genotypes of Porphyromonas gingivalis on the secretion of monocyte chemoattractant protein-1, interleukin-6, and endothelin-1/nitric oxide in human umbilical vein endothelial cells.
METHODS:  Porphyromonas gingivalis genotypes IV, II, and I fimA were cultured under anaerobic conditions, and the multiplicity of infection was 100 to infect human umbilical vein endothelial cells. In the positive control group, Porphyromonas gingivalis lipopolysaccharide was used to stimulate human umbilical vein endothelial cells, and in the negative control group, human umbilical vein endothelial cells were cultured with cell culture medium only. Enzyme-linked immunosorbent assay was used to detect the levels of monocyte chemoattractant protein 1, interleukin 6, endothelin 1/nitric oxide in the culture supernatant of human umbilical vein endothelial cells after 2, 6, and 24 hours in each group.  
RESULTS AND CONCLUSION: Except for the negative control group, the levels of interleukin 6, endothelin 1/nitric oxide, and monocyte chemoattractant protein 1 in the culture supernatant of human umbilical vein endothelial cells in the other four groups gradually increased. The levels of interleukin 6, endothelin 1/nitric oxide in the iv fimA genotype stimulation group were higher than those in the ii and i fimA genotype stimulation groups and the positive control group and the negative control group (P < 0.05). The level of monocyte chemoattractant protein 1 in the  ii fimA genotype stimulation group was higher than that in the iv,  i fimA genotype stimulation group and the negative control group (P < 0.05). The results indicate that there are certain differences in the dysfunction mechanisms of Porphyromonas gingivalis with different fimA genotypes in stimulating human umbilical vein endothelial cells. The  ii fimA genotype and  iv fimA gene have a strong ability to up-regulate the secretion of monocyte chemoattractant protein 1, interleukin 6, and endothelin 1/nitric oxide, and may play a dominant role in causing vascular vein endothelial cell dysfunction.

Key words: human umbilical vein endothelial cells, Porphyromonas gingivalis, fimA genotype, monocyte chemoattractant protein-1, interleukin-6, endothelin-1

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