中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (25): 3951-3955.doi: 10.12307/2022.397

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

LncRNA-HOTAIR可调节脂肪间充质干细胞向成骨细胞的分化

黄  涛1,贾志强2,赵晓光1,王  磊1,方丽萍3,翟文静4,翟莎菲5,周永新1   

  1. 1西安医学院第一附属医院,陕西省西安市  710077;2河南科技大学第二附属医院,河南省洛阳市  471000;3西安市人民医院,陕西省西安市710068;4西安交通大学第二附属医院,陕西省西安市  710061;5西安医学院口腔医学院,陕西省西安市  710021
  • 收稿日期:2021-01-28 接受日期:2021-04-10 出版日期:2022-09-08 发布日期:2022-01-25
  • 通讯作者: 周永新,硕士,主治医师,西安医学院第一附属医院,陕西省西安市 710077
  • 作者简介:黄涛,男,1979年生,安徽省合肥市人,2009年西安交通大学毕业,硕士,主治医师,主要从事脊柱脊髓损伤方面的研究。
  • 基金资助:
    国家自然科学基金(81801237),项目参与人:黄涛

LncRNA-HOTAIR can regulate differentiation of adipose derived mesenchymal stem cells into osteoblasts

Huang Tao1, Jia Zhiqiang2, Zhao Xiaoguang1, Wang Lei1, Fang Liping3, Zhai Wenjing4, Zhai Shafei5, Zhou Yongxin1   

  1. 1First Affiliated Hospital of Xi’an Medical College, Xi’an 710077, Shaanxi Province, China; 2Second Affiliated Hospital of Henan University of Science and Technology, Luoyang 471000, Henan Province, China; 3Xi’an People’s Hospital, Xi’an 710068, Shaanxi Province, China; 4Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China; 5School of Stomatology, Xi’an Medical College, Xi’an 710021, Shaanxi Province, China
  • Received:2021-01-28 Accepted:2021-04-10 Online:2022-09-08 Published:2022-01-25
  • Contact: Zhou Yongxin, Master, Attending physician, First Affiliated Hospital of Xi’an Medical College, Xi’an 710077, Shaanxi Province, China
  • About author:Huang Tao, Master, Attending physician, First Affiliated Hospital of Xi’an Medical College, Xi’an 710077, Shaanxi Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81801237 (to HT)

摘要:

文题释义:
lncRNA:是一类长度超过200 bp的长链非编码RNA,具有十分广泛的生物学功能。lncRNA较编码RNA有更强的细胞特异性和组织特异性,其表达与多种疾病的发生发展密切相关,且在细胞增殖、凋亡、分化及发育等过程中发挥重要的调节作用。已有研究表明,lncRNA在间充质干细胞成骨分化过程中起表观遗传调控作用。
HOTAIR:是由人类染色体12q13.13位点的HOXC簇基因列阵,以反转录方式调控基因表达。lncRNA HOTAIR在宫颈癌、卵巢癌、冠心病、心肌病和骨关节炎中发挥着重要作用。

背景:已有证据表明,LncRNA-HOTAIR能调节骨髓间充质干细胞中成骨相关基因的表达,但其对脂肪间充质干细胞成骨分化的影响尚未见报道。
目的:探讨LncRNA-HOTAIR对脂肪间充质干细胞成骨分化的影响。
方法:体外培养Lewis大鼠脂肪间充质干细胞,转染lncRNA-NC、lncRNA-HOTAIR mimics、lncRNA-HOTAIR inhibitor并进行成骨诱导,成骨诱导第7天检测碱性磷酸酶活性,成骨诱导第14天进行茜素红染色。成骨诱导第6天,通过RT-PCR及Western blot检测成骨相关基因碱性磷酸酶、Runt相关转录因子2、骨钙素、骨桥蛋白mRNA和蛋白的表达。
结果与结论:①转染LncRNA-HOTAIR mimic后,脂肪间充质干细胞中碱性磷酸酶活性及钙化程度显著降低,而转染LncRNA-HOTAIR inhibitor后则显著增加(P < 0.05);②转染LncRNA-HOTAIR mimic后,脂肪间充质干细胞中碱性磷酸酶、Runt相关转录因子2、骨钙素和骨桥蛋白的表达显著降低(P < 0.05),而转染LncRNA-HOTAIR inhibitor后则显著增加(P < 0.05);③上述结果表明,LncRNA-HOTAIR能负向调控脂肪间充质干细胞的成骨分化。

https://orcid.org/0000-0002-2828-3271 (周永新) 

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

关键词: 干细胞, 脂肪间充质干细胞, LncRNA-HOTAIR, mimic, inhibitor, 成骨分化

Abstract: BACKGROUND: Evidence has shown that LncRNA-HOTAIR can regulate the expression of osteogenic related genes in bone marrow mesenchymal stem cells, but its effect on the osteogenic differentiation of adipose derived mesenchymal stem cells has not been reported.
OBJECTIVE: To investigate the effect of LncRNA-HOTAIR on the osteogenic differentiation of adipose derived mesenchymal stem cells. 
METHODS: Adipose derived mesenchymal stem cells of Lewis rats were cultured in vitro. LncRNA-NC, lncRNA-HOTAIR mimics, and lncRNA-HOTAIR inhibitor were transfected into adipose derived mesenchymal stem cells and osteogenesis was induced. The alkaline phosphatase activity was detected on the 7th day of osteogenic induction. Alizarin red staining was performed on the 14th day of osteogenic induction. On the 6th day of osteogenic induction, the expression levels of osteogenic-related genes alkaline phosphatase, Runt-related transcription factor 2, osteocalcin, and osteopontin mRNA and protein were detected by RT-PCR and western blot assay.
RESULTS AND CONCLUSION: (1) After LncRNA-HOTAIR mimic transfection, alkaline phosphatase activity and calcification degree of adipose derived mesenchymal stem cells were significantly decreased, while LncRNA-HOTAIR inhibitor transfection significantly increased (P < 0.05). (2) After LncRNA-HOTAIR mimic transfection, the expression of alkaline phosphatase, Runt-related transcription factor 2, osteocalcin, and osteopontin in adipose derived mesenchymal stem cells decreased significantly (P < 0.05), but increased significantly after LncRNA-HOTAIR inhibitor transfection (P < 0.05). (3) These results suggest that LncRNA-HOTAIR can negatively regulate the osteogenic differentiation of adipose derived mesenchymal stem cells.

Key words: stem cells, adipose derived mesenchymal stem cells, LncRNA-HOTAIR, mimic, inhibitor, osteogenic differentiation

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