中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (11): 1680-1686.doi: 10.3969/j.issn.2095-4344.1136

• 口腔组织构建 oral tissue construction • 上一篇    下一篇

白细胞介素17和牙周膜成纤维细胞在体外诱导破骨样细胞生成中的作用

周  恬,吴  凯,黎  敏,卢海丽,唐海芳,康  娜   

  1. (广西医科大学附属口腔医院重点实验室,广西壮族自治区南宁市  530021)
  • 收稿日期:2018-12-06 出版日期:2019-04-18 发布日期:2019-04-18
  • 通讯作者: 康娜,博士,副教授,广西医科大学附属口腔医院重点实验室,广西壮族自治区南宁市 530021
  • 作者简介:周恬,男,1992年生,浙江省湖州市人,广西医科大学在读硕士,主要从事 牙合面畸形的矫治及机制的相关研究。
  • 基金资助:

    国家自然科学基金(81360170),项目负责人:康娜

Effects of interleukin-17 and human periodontal ligament fibroblasts on the production of osteoclast-like cells in vitro

Zhou Tian, Wu Kai, Li Min, Lu Haili, Tang Haifang, Kang Na   

  1.  (State Key Laboratory of Affiliated Stomatological Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China)
  • Received:2018-12-06 Online:2019-04-18 Published:2019-04-18
  • Contact: Kang Na, MD, Associate professor, State Key Laboratory of Affiliated Stomatological Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • About author:Zhou Tian, Master candidate, State Key Laboratory of Affiliated Stomatological Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the National Nature Science Foundation of China, No. 81360170 (to KN)

摘要:

文章快速阅读:

文题释义:
破骨样细胞:破骨细胞由破骨细胞前体细胞分化形成,体外培养可分化为破骨样细胞,体外培养的破骨样细胞可用于细胞学及分子生物学研究。破骨样细胞与破骨细胞的区别在于破骨样细胞多用于实验研究,而破骨细胞存在于骨改建部位。
外周血单个核细胞(peripheral blood mononuclear cell,PBMC):是外周血中具有单个核的细胞,包括淋巴细胞和单核细胞。目前外周血单个核细胞主要的分离方法是Ficoll-hypaque(聚蔗糖-泛影葡胺)密度梯度离心法。
摘要
背景
:研究表明,牙根吸收是正畸治疗过程中常见的并发症,而白细胞介素17可能通过牙周膜参与介导破骨细胞的分化和成熟从而引发牙根吸收。
目的:探讨白细胞介素17和人牙周膜成纤维细胞在正畸炎性相关牙根吸收中的作用及其作用机制。
方法:取4-6代人牙周膜成纤维细胞分别加入含白细胞介素17质量浓度为0或20 μg/L的DMEM培养基预处理42 h,取细胞上清液加入50 μg/L核因子κB受体活化因子配体(RANKL)分别作用于外周血单核细胞3,5,7,10 d,建立人牙周膜成纤维细胞和外周血单核细胞间接共培养系统。实验分为6组:①对照组;②外周血单核细胞+RANKL组;③外周血单核细胞+人牙周膜成纤维细胞组;④外周血单核细胞+人牙周膜成纤维细胞+白细胞介素17组;⑤外周血单核细胞+人牙周膜成纤维细胞+RANKL组;⑥外周血单核细胞+人牙周膜成纤维细胞+RANKL+白细胞介素17组。采用RT-qPCR法检测外周血单核细胞诱导生成破骨样细胞组织蛋白酶K、基质金属蛋白酶9、碳酸酐酶ⅡmRNA的表达量,鬼笔环肽染色观察和计数破骨样细胞的细胞骨架中纤维肌动蛋白环的形态和数目。
结果与结论:①RT-qPCR分析证实,与对照组相比,白细胞介素17、人牙周膜成纤维细胞和RANKL诱导的基质金属蛋白酶9、组织蛋白酶K和碳酸酐酶Ⅱ表达水平显著提高;②鬼笔环肽染色结果显示,与对照组相比,加白细胞介素17组或(和)加RANKL组肌动蛋白环阳性细胞数目显著增加(P < 0.01);③结果提示,白细胞介素17可有效诱导破骨细胞前体分化为具有骨吸收能力的破骨样细胞,其具体机制是通过调节人牙周膜成纤维细胞,上调RANKL下调骨保护素来介导的。

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
ORCID: 0000-0001-7944-9959(康娜)

关键词: 白细胞介素17, 牙周膜, 人牙周膜成纤维细胞, 破骨样细胞, 组织蛋白酶k, 骨吸收, 骨保护素, 组织构建

Abstract:

BACKGROUND: Root resorption has been shown to be a common complication during orthodontic treatment, and interleukin-17 may mediate the differentiation and maturation of osteoclasts through periodontal ligament to induce root resorption.
OBJECTIVE: To investigate the roles of interleukin-17 and human periodontal ligament fibroblasts in orthodontically induced inflammatory root resorption and the underlying mechanism.
METHODS: Passage 4-6 human periodontal ligament fibroblasts were added to the DMEM medium containing interleukin-17 at concentration of 0 or 20 μg/L for 42 hours. Cell supernatant mixed with 50 μg/L RANKL was cultured with peripheral blood mononuclear cells for 3, 5, 7 and 10 days, respectively to establish a human periodontal ligament fibroblasts and peripheral blood mononuclear cells indirect co-culture system. There were six groups: control group, peripheral blood mononuclear cells+RANKL group, peripheral blood mononuclear cells+human periodontal ligament fibroblasts group, peripheral blood mononuclear cells+human periodontal ligament fibroblasts+interleukin-17 group, peripheral blood mononuclear cells + human periodontal ligament fibroblasts+RANKL group, and peripheral blood mononuclear cells+human periodontal ligament fibroblasts+RANKL+interleukin-17 group. The expression levels of cathepsin K, matrix metalloproteinase 9 and carbonic anhydrase II mRNA induced by peripheral blood mononuclear cells in osteoclast-like cells were detected by RT-qPCR. Phalloidin staining was used to observe and count the morphology and number of fibromuscular actin rings in the cytoskeleton of osteoclast-like cells.
RESULTS AND CONCLUSIONS: RT-qPCR analysis confirmed that interleukin-17, human periodontal ligament fibroblasts and RANKL increased the expression levels of cathepsin K, matrix metalloproteinase 9 and carbonic anhydrase II compared with the control group. The results of phalloidin staining showed a significant increase in the number of actin-loop positive cells in the interleukin-17 (+) or RANKL (+) groups compared with the control group (P < 0.01). To conclude, interleukin-17 can effectively induce osteoclast precursor differentiation into osteoclast-like cells with bone resorption ability, which may be mediated through upregulation of RANKL and downregulation of osteoprotegerin by human periodontal ligament fibroblasts.

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

Key words: Interleukin-17, Osteoclasts, Periodontal Ligament, Tissue Engineering

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