中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (32): 5134-5139.doi: 10.3969/j.issn.2095-4344.2017.32.009

• 软骨组织构建 cartilage tissue construction • 上一篇    下一篇

电针抑制Ras/Raf/MEK1/2/ERK1/2信号通路介导骨关节炎软骨超微结构退变

付长龙1,林  洁1,赵忠胜1,吴广文1,洪秀娥2,郑春松1,林秋英3,戴一琛3,吴明霞2   

  1. (福建中医药大学, 1中西医结合研究院,3药学院,福建省福州市  350122;2福建中医药大学附属第二人民医院,福建省福州市  350003)
  • 收稿日期:2017-07-27 出版日期:2017-11-18 发布日期:2017-11-15
  • 通讯作者: 吴明霞,医学博士,主任医师,教授,博士生导师,福建中医药大学附属第二人民医院,福建省福州市 350003
  • 作者简介:付长龙,男,1987年生,山东省济宁市人,汉族,福建中医药大学在读博士,主要从事中西医结合骨关节炎研究。
  • 基金资助:

    国家自然科学基金(81373719)

Electroacupuncture inhibits the ultrastructural degeneration of osteoarthritic chondrocytes mediated by Ras/Raf/MEK1/2/ERK1/2 signaling pathways

Fu Chang-long1, Lin Jie1, Zhao Zhong-sheng1, Wu Guang-wen1, Hong Xiu-e2, Zheng Chun-song1, Lin Qiu-ying3, Dai Yi-chen3, Wu Ming-xia2   

  1. (1Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China; 2the Second People’s Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou 350003, Fujian Province, China; 3College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China)
  • Received:2017-07-27 Online:2017-11-18 Published:2017-11-15
  • Contact: Wu Ming-xia, M.D., Chief physician, Professor, Doctoral supervisor, the Second People’s Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou 350003, Fujian Province, China
  • About author:Fu Chang-long, Studying for doctorate, Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China
  • Supported by:

    the National natural Science Foundation of China, No. 81373719

摘要:

文章快速阅读:


文题释义:
Ras-Raf-MEK1/2-ERK1/2信号通路:Ras-Raf-MEK1/2-ERK1/2信号通路(ERK1/2通路),位于MAPK信号通路的下游,外界刺激首先激活Ras,诱发连锁反应,活化的Ras进一步激活Raf,Raf激活MEK1/2,进而活化ERK1/2,ERK1/2进入细胞核,激活转录因子的表达,促进软骨细胞的异常增殖及肥大分化,引起软骨钙化、增生,最终形成骨关节炎,因此,ERK1/2信号的活化是决定软骨细胞转归的关键。PD98059作为该信号通路的抑制剂,可通过选择性、非ATP竞争性抑制MEK,进而阻断该信号通路。
电针:电针具有通络舒筋、消肿止痛的功效其在治疗膝骨性关节炎上,具有疗效可靠,不良反应小并且操作方便等优点,可有效缓解膝骨关节炎患者临床症状。
摘要
背景:
前期研究发现,电针能有效抑制凋亡调控基因p38及Fas mRNA的表达,并降低MAPK信号通路的表达,从而抑制软骨细胞凋亡,同时电针可影响骨性关节炎软骨细胞JAK-STAT信号通路,并有效增加转化生长因子β1含量及促进关节软骨中STAT3,Smad3及LepR mRNA的表达以延缓关节软骨退变。
目的:观察电针对骨关节炎大鼠关节软骨超微结构及软骨组织中Ras,Raf,MEK1/2,ERK1/2 mRNA表达的影响。
方法:建立膝骨关节炎大鼠模型,造模成功后2周随机分为4组,模型组不进行电针干预,电针15,30 min组取双侧膝关节内、外膝眼,分别经电针治疗15,30 min,PD98059组经静脉注射细胞外信号调节激酶抑制剂PD98059,另设正常饲养的大鼠作正常组对照,共干预3个月。
结果与结论:①透射电镜检测显示,与模型组比,PD98059抑制剂组、电针15,30 min组软骨细胞形态变化较小,细胞核较大,部分内质网池扩张,线粒体结构仍较清晰;②ELISA结果显示,与模型组比,PD98059抑制剂组、电针15,30 min组的肿瘤坏死因子α水平降低(P < 0.01);③RT-PCR结果显示,与模型组相比,PD98059抑制剂组、电针15,30 min组的Ras,Raf,MEK1/2及ERK1/2 mRNA表达显著降低(P < 0.05或P < 0.01);④结果说明,电针干预能够减轻膝骨关节炎模型大鼠软骨细胞损伤,降低膝关节部滑膜组织中肿瘤坏死因子α水平,下调关节软骨Ras,Raf,MEK1/2及ERK1/2 mRNA表达,从而对骨关节炎关节软骨发挥一定的保护作用。

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: 0000-0002-7862-752X(吴明霞)

关键词: 组织构建, 软骨组织工程, 骨关节炎, 电针, 关节软骨, 软骨, 滑膜, 电针, Ras-Raf-MEK1/2-ERK1/2信号通路, 国家自然科学基金

Abstract:

BACKGROUND: Previous studies have found that electroacupuncture (EA) could effectively inhibit the expression of p38 and Fas mRNA mediated by MAPK signaling pathways, to further inhibit the apoptosis of chondrocytes. Meanwhile, EA delays the degeneration of articular cartilage mediated by JAK-STAT signaling pathway through upregulating the expression levels of transforming growth factor β1 as well as the mRNA expression levels of STAT3, Smad3 and LepR.
OBJECTIVE: To explore the effect of EA on the cartilage ultrastructure and mRNA expression levels of Ras, Raf, MEK1/2 and ERK1/2 in the rat with knee osteoarthritis.
METHODS: The rat models of knee osteoarthritis were established, and randomized into four groups at 2 weeks after modeling: model group received no interventions; 15- and 30-minute EA groups were given EA at the Hsiyen (medical, extra) of bilateral knee joints for 15 and 30 minutes, respectively; PD98059 group was given the intravenous injection of extracellular signal-regulated kinase inhibitor PD98059. The intervention time was 3 months. Those rats received normal feeding served as blank control group.
RESULTS AND CONCLUSION: Transmission electron microscopy showed that compared with the model group, the chondrocytes in the 15- and 30-minute EA and PD98059 groups changed little, the nucleus was larger, partial endoplasmic reticulum cisterna expanded, and the mitochondria structure was clear. ELISA results showed that the 15- and 30-minute EA and PD98059 groups had a significant decrease in the level of tumor necrosis factor α compared with the model group (P < 0.01). RT-PCR revealed that the mRNA expression levels of Ras, Raf, MEK1/2 and ERK1/2 in the 15- and 30-minute EA and PD98059 groups were significantly downregulated (P < 0.05 or P < 0.01). These results indicate that EA can alleviate chondrocyte injury in the rat osteoarthritic model, reduce the level of tumor necrosis factor α in the synovium, and downregulated the expression levels of Ras, Raf, MEK1/2 and ERK1/2 mRNA, further delaying the chondrocyte degeneration in osteoarthritis.

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: Tissue Engineering, Knee Joint, Osteoarthritis

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