中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (13): 2094-2100.doi: 10.3969/j.issn.2095-4344.1692

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

前交叉韧带成纤维细胞与滑膜细胞共培养条件下前列腺素E2的作用

蔡林奕,皮彩霞,谢 静   

  1. 四川大学口腔疾病研究国家重点实验室,四川省成都市 610041
  • 修回日期:2018-11-02 出版日期:2019-05-08 发布日期:2019-05-08
  • 通讯作者: 谢静,博士,副教授,硕士研究生导师,四川大学口腔疾病研究国家重点实验室,四川省成都市 610041
  • 作者简介:蔡林奕,女,1994年生,四川省德阳市人,汉族,四川大学在读硕士,主要从事骨和软骨的基础研究。
  • 基金资助:

    国家自然科学青年基金(81600840)

Effects of prostaglandin E2 in the co-culture of anterior cruciate ligament fibroblasts and synoviocytes

Cai Linyi, Pi Caixia, Xie Jing   

  1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
  • Revised:2018-11-02 Online:2019-05-08 Published:2019-05-08
  • Contact: Xie Jing, MD, Associate professor, Master’s supervisor, State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
  • About author:Cai Linyi, Master candidate, State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan Province, China
  • Supported by:

    the National Natural Science Foundation of China (Youth Program), No. 81600840

摘要:

文章快速阅读:

文题释义:
滑膜细胞与前交叉韧带成纤维细胞共培养:
生理情况下,膝关节组织中的滑膜细胞和成纤维细胞存在着密切的细胞交流。共培养体系的建立,有助于更真实地反映滑膜细胞在韧带损伤修复过程中的参与作用。在共培养基础上应用前列腺素E2可进一步模拟韧带损伤后局部微环境的改变。
基质金属蛋白酶组织抑制剂家族:是基质金属蛋白酶家族的生理性抑制剂,能与活化的基质金属蛋白酶家族发生1∶1的结合而抑制其活性。人体内的基质金属蛋白酶组织抑制剂家族有4个成员,几乎对所有基质金属蛋白酶家族有抑制作用,但这一抑制作用有一定的交叉性和选择性。基质金属蛋白酶家族及其抑制剂共同调控细胞外基质的代谢平衡,当二者表达量不均衡时,可导致细胞外基质重建加快,组织难以愈合。研究前列腺素E2作用下基质金属蛋白酶组织抑制剂家族基因表达的变化有利于从分子生物学角度理解前交叉韧带损伤与修复过程,为前交叉韧带损伤提供针对性治疗方法。

 

摘要
背景:
滑膜细胞与前交叉韧带成纤维细胞共培养体系的建立能在较大程度上模拟韧带损伤后的微环境变化。在前列腺素E2等炎症因子的刺激下,基质金属蛋白酶家族与基质金属蛋白酶组织抑制剂家族(tissue inhibitors of metalloproteinases,TIMPs)表达量的严重失衡可在一定程度上解释前交叉韧带的不可自我修复特性。  
目的:在前交叉韧带成纤维细胞与滑膜细胞共培养的条件下,研究前列腺素E2对滑膜细胞迁移和TIMPs基因表达的影响。
方法:体外分别进行人滑膜细胞的单培养以及前交叉韧带成纤维细胞与滑膜细胞的Transwell共培养,用前列腺素E2干预后,细胞划痕实验检测24 h时的滑膜细胞迁移率;半定量PCR分析滑膜细胞中TIMPs基因表达的变化。
结果与结论:①前列腺素E2处理单培养的滑膜细胞后,细胞迁移率显著下降(P < 0.05);与共培养滑膜细胞比较,前列腺素E2对单培养滑膜细胞迁移的抑制作用更为显著(P < 0.05);②在单培养滑膜细胞中,前列腺素E2呈浓度依赖性地抑制TIMPs基因的表达(P < 0.05);对TIMP2和TIMP4而言,这种抑制作用具有时间依赖性;对TIMP1和TIMP3而言,随时间增加,基因表达上调;③共培养滑膜细胞TIMPs基因表达的变化幅度不如单培养细胞显著,且各个时间点的TIMPs基因表达量均高于单培养处理组(P < 0.05);④结果提示,前列腺素E2能显著抑制滑膜细胞的迁移和TIMPs的基因表达,而共培养的旁分泌作用可在一定程度上解除这种抑制。


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
ORCID: 0000-0002-4919-7057(蔡林奕)

关键词: 前列腺素E2, 前交叉韧带, 滑膜细胞, 成纤维细胞, 共培养, TIMPs, 基质金属蛋白酶组织抑制剂家族, 基质金属蛋白酶类, 细胞迁移

Abstract:

BACKGROUND: Co-culture of synoviocytes with anterior cruciate ligament fibroblasts can optimize the simulation of articular microenvironment after ligament injuries. The serious imbalance between the expressions of matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) induced by prostaglandin E2 and other inflammatory factors could certainly indicate the poor self-healing capability of the anterior cruciate ligament. 
OBJECTIVE: To investigate the effects of prostaglandin E2 on cell migration and gene expressions of TIMPs in synoviocytes co-cultured with anterior cruciate ligament fibroblasts. 
METHODS: Human synoviocytes were mono-cultured or co-cultured with anterior cruciate ligament fibroblasts in the Transwell chamber. Then the mono-cultured and co-cultured synoviocytes were treated with prostaglandin E2. Cell migration was assessed by wound healing assay at 24 hours after prostaglandin E2 treatment. Semi-quantitative PCR was done to analyze the gene expressions of TIMPs in synoviocytes. 
RESULTS AND CONCLUSION: (1) Prostaglandin E2 intensely inhibited the cell migration of synoviocytes (P < 0.05), and the inhibitory effect was more significant in the mono-cultured synoviocytes compared with the co-cultured cells (P < 0.05). (2) Gene expressions of TIMPs in the mono-cultured synoviocytes were down-regulated by prostaglandin E2 in a dose-dependent manner (P < 0.05). The inhibitory effect on TIMP-2 and TIMP-4 was time-dependent, while the gene expressions of TIMP-1 and TIMP-3 were up-regulated with the increase of induction time. (3) The variation of TIMPs expression in the co-cultured group was insignificant as compared with that in the mono-cultured group, but the expression level of TIMPs in the co-cultured group was significantly higher than that in the mono-cultured group at each observational time point (P < 0.05). Thus, prostaglandin E2 can suppress cell migration and gene expressions of TIMPs in synoviocytes, and this inhibitory action can be partially reversed by the co-culture via the paracrine effect.

Key words: Prostaglandins, Anterior Cruciate Ligament, Matrix Metalloproteinases, Tissue Engineering

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