中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (35): 5607-5613.doi: 10.12307/2022.1008

• 骨组织构建 bone tissue construction • 上一篇    下一篇

lncRNA HOTAIR在白细胞介素1β介导骨关节炎中的作用机制

周  亮1,陈兴真2,李振宇1,张泽坤1,段国庆3   

  1. 1济宁医学院临床医学院,山东省济宁市  272067;2济宁市第一人民医院手足外科,山东省济宁市  272067;3济宁医学院附属医院关节与运动医学科,山东省济宁市  272067
  • 收稿日期:2021-01-10 接受日期:2021-03-02 出版日期:2022-12-18 发布日期:2022-05-16
  • 通讯作者: 段国庆,博士,主任医师,教授,硕士生导师,济宁医学院附属医院关节与运动医学科,山东省济宁市 272067
  • 作者简介:周亮,男,1995年生,汉族,山东省济宁市人,济宁医学院在读硕士,主要从事关节与运动医学损伤疾病的研究。 陈兴真,男,1992年生,山东省东阿县人,汉族,2021年济宁医学院毕业,硕士,医师,主要从事手足外科疾病的研究。
  • 基金资助:
    济宁医学院青年教师科研扶持基金(JY2017FS021),项目负责人:段国庆;贺林院士新医学科研基金项目(JYHL2019FMS13),项目负责人:段国庆

The mechanism of lncRNA HOTAIR in interleukin-1beta-mediated osteoarthritis

Zhou Liang1, Chen Xingzhen2, Li Zhenyu1, Zhang Zekun1, Duan Guoqing3   

  1. 1School of Clinical Medicine, Jining Medical University, Jining 272067, Shandong Province, China; 2Department of Hand and Foot Surgery, Jining No. 1 People’s Hospital, Jining 272067, Shandong Province, China; 3Deparment of Joint and Sports Medicine, Affiliated Hospital of Jining Medical University, Jining 272067, Shandong Province, China
  • Received:2021-01-10 Accepted:2021-03-02 Online:2022-12-18 Published:2022-05-16
  • Contact: Duan Guoqing, MD, Chief physician, Professor, Master’s supervisor, Deparment of Joint and Sports Medicine, Affiliated Hospital of Jining Medical University, Jining 272067, Shandong Province, China
  • About author:Zhou Liang, Master candidate, School of Clinical Medicine, Jining Medical University, Jining 272067, Shandong Province, China Chen Xingzheng, Master, Physician, Department of Hand and Foot Surgery, Jining No. 1 People’s Hospital, Jining 272067, Shandong Province, China Zhou Liang and Chen Xingzhen contributed equally to this work.
  • Supported by:
    the Research Support Fund for Young Teachers of Jining Medical University, No. JY2017FS021 (to DGQ); Academician He Lin New Medical Research Fund Project, No. JYHL2019FMS13 (to DGQ)

摘要:

文题释义:
LncRNA HOTAIR:长链非编码RNA(LncNRA)是一类转录本长度超过200 nt的RNA分子,它们并不编码蛋白,而是以RNA的形式在多种层面上调控基因的表达水平。而LncRNA HOTAIR 是一个长约2 158 nt的反义RNA,反式调控不同染色体上的HOX基因簇。
小干扰RNA(small interfering RNA,siRNA):有时称为短干扰RNA(short interfering RNA)或沉默RNA(silencing RNA),是一个长20-25个核苷酸的双股RNA,在生物学上有许多不同的用途。目前已知siRNA主要参与RNA干扰(RNAi)现象,以带有专一性的方式调节基因的表达。

背景:目前已有研究将骨关节炎患者关节软骨及正常人关节软骨进行研究后发现,lncRNA HOTAIR较对照组明显上调,可能与骨关节炎的发生有一定关系。
目的:探索lncRNA HOTAIR在白细胞介素1β介导的骨关节炎中的作用机制。
方法:①临床样本分组:选取20例关节炎行全膝关节表面置换患者的内侧髁软骨作为骨关节炎组,选取7例行下肢截肢或因股骨颈骨折行全髋关节置换患者的关节软骨作为正常软骨组;②实验动物分组:取48只SD大鼠随机分为骨关节炎组(36只)和正常对照组(12只),骨关节炎组建立膝关节骨关节炎模型;③细胞实验分组及处理:将体外培养的大鼠关节软骨细胞(RCCs-1)分为对照组、白细胞介素1β组(筛选出最佳质量浓度10 μg/L模拟骨关节炎环境)、siRNA组、白细胞介素1β+siRNA组,对照组不做特殊处理,其他各组分别加入相应的溶液进行处理,培养48 h;④检测指标:分别于造模后4,6,8周取大鼠股骨行苏木精-伊红染色观察病理变化;采用RT-PCR分析患者关节软骨、大鼠关节软骨及白细胞介素1β处理的大鼠软骨细胞中lncRNA HOTAIR的mRNA表达水平;采用CCK-8法检测白细胞介素1β处理的软骨细胞活力;Western blot检测软骨细胞Ⅱ型胶原蛋白表达;流式细胞技术检测软骨细胞凋亡情况。
结果与结论:①正常对照组大鼠软骨细胞排列整齐,软骨结构层次清晰,潮线完整;骨关节炎组随着造模时间的延长,软骨结构越紊乱,软骨细胞数量明显减少,软骨基质失染,潮线严重紊乱;②lncRNA HOTAIR在骨关节炎患者和骨关节炎组大鼠软骨细胞中表达增高;③白细胞介素1β降低大鼠膝关节软骨细胞活力,且促进HOTAIR的表达增加;④HOTAIR抑制大鼠膝关节软骨细胞活力及Ⅱ型胶原蛋白的表达;⑤HOTAIR的表达促进软骨细胞凋亡;⑥结果提示,抑制HOTAIR介导的软骨细胞凋亡可能是膝骨关节炎基因治疗的潜在机制。 
缩略语:长链非编码RNA:Long non-coding RNA,lncRNA;小干扰RNA:small interfering RNA,siRNA

https://orcid.org/0000-0003-1175-3713(周亮) 

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

关键词: 膝关节, 骨关节炎, LncRNA, HOTAIR, 白细胞介素1β, 细胞凋亡, Ⅱ型胶原蛋白, 细胞增殖

Abstract: BACKGROUND: The articular cartilage of patients with osteoarthritis and normal human articular cartilage have been studied and found that long non-coding RNA (lncRNA) HOTAIR is significantly up-regulated compared with the control group, which may be related to the occurrence of osteoarthritis.
OBJECTIVE: To explore the mechanism of lncRNA HOTAIR in interleukin-1β-mediated osteoarthritis.
METHODS: (1) Clinical grouping: The medial condyle cartilage samples of 20 patients with arthritis who underwent total knee replacement were selected as experimental group. The articular cartilage samples of seven patients with lower extremity amputation or undergoing total hip arthroplasty due to femoral neck fracture were selected as control group. (2) Animal grouping: Forty-eight Sprague-Dawley rats were randomized into osteoarthritis group (n=36) and normal control group (n=12). Animal models of knee osteoarthritis were made in the osteoarthritis group. (3) Cell testing and treatment: The rat articular chondrocytes (RCCs-1) cultured in vitro were divided into control group, interleukin-1β group (the best mass concentration of 10 μg/L was selected to simulate osteoarthritis environment), small interfering RNA (siRNA) group, interleukin-1β+siRNA group. Except for the control group with no special treatment, the other groups were treated with corresponding solutions and cultured for 48 hours. (4) Detection indicators: At 4, 6, and 8 weeks after modeling, the rat femurs were collected for pathological observation using hematoxylin-eosin staining. RT-PCR was used to analyze the mRNA expression of lncRNA HOTAIR in interleukin-1β-mediated rat chondrocytes, rat articular cartilage, and the articular cartilage of patients. Chondrocyte viability was detected by cell counting kit-8 method. Expression of type II collagen in chondrocytes was detected by western blot. Apoptosis of chondrocytes was detected by flow cytometry.
RESULTS AND CONCLUSION: (1) The chondrocytes of the rats in the normal control group were neatly arranged, the cartilage structure was clear, and the tide line was complete. In the osteoarthritis group, the cartilage structure became more disordered over time, the number of chondrocytes was significantly reduced, the cartilage matrix was decolorized, and the tide line was badly disordered. (2) lncRNA HOTAIR expression was increased in the chondrocytes of both patients and rats with osteoarthritis. (3) Interleukin-1β reduced the viability of chondrocytes and increased the HOTAIR expression in rat knee joint. (4) HOTAIR inhibited the viability of chondrocytes and the expression of type II collagen in rat knee joint. (5) The expression of HOTAIR promoted apoptosis in chondrocytes. (6) To conclude, inhibition of HOTAIR-mediated chondrocyte apoptosis may be the potential mechanism of gene therapy for knee osteoarthritis.

Key words: knee joint, osteoarthritis, LncRNA, HOTAIR, interleukin-1β, apoptosis, type II collagen, cell proliferation

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