中国组织工程研究 ›› 2020, Vol. 24 ›› Issue (11): 1641-1646.doi: 10.3969/j.issn.2095-4344.2530

• 骨组织构建 bone tissue construction •    下一篇

miR-455-3p靶向HIPK2调控高糖环境下成骨细胞的增殖和凋亡

匡嘉兵1,申文娟2,马永刚3,徐  昊1,张克良1,沈  波1,许闫严1   

  1. 1武汉市第四医院,华中科技大学同济医学院附属普爱医院西院骨科,湖北省武汉市  430030;2南华大学附属第二医院重症医学科,湖南省衡阳市  421099;3武汉大学人民医院骨科,湖北省武汉市  430030
  • 收稿日期:2019-06-27 修回日期:2019-07-02 接受日期:2019-08-09 出版日期:2020-04-18 发布日期:2020-02-21
  • 通讯作者: 申文娟,硕士,南华大学附属第二医院重症医学科,湖南省衡阳市 421099
  • 作者简介:匡嘉兵,男,1983年生,湖南省邵阳市人,硕士,主治医师,主要从事骨科方面的研究。
  • 基金资助:
    湖北省卫计委项目(WJ2015MB087)

Effect of miR-455-3p targeting HIPK2 on proliferation and apoptosis of osteoblasts induced by high glucose

Kuang Jiabing1, Shen Wenjuan2, Ma Yonggang3, Xu Hao1, Zhang Keliang1, Shen Bo1, Xu Yanyan1   

  1. 1Department of Orthopedics, Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology; 2Department of Critical Care Medicine, the Second Hospital, University of South China, ; 3Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan 430030, Hubei Province, China
  • Received:2019-06-27 Revised:2019-07-02 Accepted:2019-08-09 Online:2020-04-18 Published:2020-02-21
  • Contact: Shen Wenjuan, Master, Department of Critical Care Medicine, the Second Hospital, University of South China, Hengyang 421099, Hunan Province, China
  • About author:Kuang Jiabing, Master, Attending physician, Department of Orthopedics, Wuhan Fourth Hospital, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
  • Supported by:
    the Hubei Provincial Health and Family Planning Commission Project, No. WJ2015MB087

摘要:

文题释义:
糖尿病性骨病:糖尿病可导致骨代谢发生改变,表现为骨形成缺陷、成骨细胞数量减少、骨基质形成不足。高糖环境下以成骨细胞功能改变最为显著,高糖诱导成骨细胞是研究糖尿病性骨病的常用细胞模型。
成骨作用:指成骨细胞移至将要合成骨组织的部位,分泌、合成骨胶原及骨蛋白纤维,将钙、磷吸收到纤维孔隙中进行沉淀结晶,形成骨组织的过程。

背景:以往研究表明多种miRNA在骨形成中发挥作用,miR-335-5p可保护成骨细胞免受氧化应激,对枸橼酸铁铵诱导的成骨细胞具有保护作用,但miR-335-5p对高糖环境下成骨细胞增殖和凋亡的影响尚未可知。

目的:探讨miR-455-3p靶向HIPK2对高糖环境下成骨细胞增殖和凋亡的影响。

方法:双荧光素酶报告基因分析法验证miR-455-3p对HIPK2的靶向作用。体外用高糖诱导MC3T3-E1细胞,分为空白组、高糖组、高糖+miR-control组、高糖+miR-455-3p组、高糖+si-control组、高糖+si-HIPK2组、高糖+miR-455-3p+pcDNA组和高糖+miR-455-3p+pcDNA-HIPK2组。qRT-PCR检测miR-455-3p和HIPK2 mRNA的表达,MTT法检测细胞存活率,流式细胞检测细胞凋亡,Western blot检测HIPK2、p-STAT3和STAT3蛋白的表达。

结果与结论:①HIPK2是miR-455-3p的靶基因,miR-455-3p可负性调控HIPK2的表达;②高糖处理可抑制miR-455-3p的表达,促进HIPK2的表达;③过表达miR-455-3p或抑制HIPK2表达均可促进高糖条件下MC3T3-E1细胞的存活和抑制凋亡;④过表达HIPK2可部分逆转miR-455-3p对高糖条件下成骨细胞的存活促进和凋亡抑制作用;⑤miR-455-3p通过调控HIPK2抑制成骨细胞中p-STAT3的表达;⑥结果表明,miR-455-3p通过靶向下调HIPK2抑制高糖诱导的成骨细胞凋亡,促进成骨细胞增殖,这可能与抑制STAT3信号通路有关。

ORCID: 0000-0001-7129-8455(匡嘉兵)

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: miR-455-3p, HIPK2, 高糖, 成骨细胞, 细胞凋亡, STAT3信号通路

Abstract:

BACKGROUND: Previous studies have shown that various miRNAs play a role in bone formation. miR-335-5p can protect osteoblasts from oxidative stress and protect osteoblasts under induction with ferric ammonium citrate, but the effect of miR-335-5p on osteoblast proliferation and apoptosis in high glucose environments is unknown.

OBJECTIVE: To investigate the effect of miR-455-3p targeting HIPK2 on proliferation and apoptosis of osteoblasts induced by high glucose.

METHODS: Dual luciferase reporter assay was used to verify the targeting of miR-455-3p to HIPK2. MC3T3-E1 cells were induced by high glucose in vitro, and MC3T3-E1 cells were treated as follows: blank group, high glucose group, high glucose+miR-control group, high glucose+miR-455-3p group, high sugar+si-control group, high sugar+si-HIPK2 group, high glucose+miR-455-3p+pcDNA group and high glucose+miR-455-3p+pcDNA-HIPK2 group. The expression of miR-455-3p and HIPK2 mRNA was detected by qRT-PCR, cell viability was detected by MTT assay, apoptosis was detected by flow cytometry, and the expression of HIPK2, p-STAT3 and STAT3 protein was detected by western blot.

RESULTS AND CONCLUSION: HIPK2 was a target gene of miR-455-3p, and miR-455-3p negatively regulated the expression of HIPK2. High glucose treatment inhibited the expression of miR-455-3p and promoted the expression of HIPK2. The over-expression of miR-455-3p or the inhibition of HIPK2 promoted MC3T3-E1 survival and inhibit cell apoptosis after high glucose treatment. The over-expression of HIPK2 partially reversed the survival promotion and apoptosis inhibition of miR-455-3p on osteoblasts induced by high glucose. miR-455-3p inhibited the expression of p-STAT3 in osteoblasts by regulating HIPK2. To conclude, miR-455-3p inhibits the apoptosis and promotes the proliferation of osteoblasts induced by high glucose via down-regulating HIPK2, which may be related to the inhibition of STAT3 signaling pathway.

Key words: miR-455-3p, HIPK2, high glucose, osteoblasts, apoptosis, STAT3 signaling pathway

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