中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (31): 4964-4969.doi: 10.12307/2024.710

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

过表达长链非编码RNA Gm16104影响C3H10T1/2间充质干细胞的成骨分化

林展莹,林紫云,黄柳艳,张文烯,左长清    

  1. 广东医科大学药学院,广东省东莞市   523808
  • 收稿日期:2023-08-30 接受日期:2023-09-22 出版日期:2024-11-08 发布日期:2024-01-22
  • 通讯作者: 左长清,副教授,广东医科大学药学院,广东省东莞市 523808
  • 作者简介:林展莹,女,1998年生,广东省云浮市人,汉族,广东医科大学在读硕士,主要从事干细胞多向分化调控研究。
  • 基金资助:
    省级大学生创新创业训练项目(S202210571052),项目负责人:林紫云;广东省自然科学基金面上项目(2017A030313641,2018A0303130203),项目负责人:左长清

Overexpression of long non-coding RNA Gm16104 affects osteogenic differentiation of C3H10T1/2 mesenchymal stem cells

Lin Zhanying, Lin Ziyun, Huang Liuyan, Zhang Wenxi, Zuo Changqing   

  1. School of Pharmacy, Guangdong Medical University, Dongguan 523808, Guangdong Province, China
  • Received:2023-08-30 Accepted:2023-09-22 Online:2024-11-08 Published:2024-01-22
  • Contact: Zuo Changqing, Associate professor, School of Pharmacy, Guangdong Medical University, Dongguan 523808, Guangdong Province, China
  • About author:Lin Zhanying, Master candidate, School of Pharmacy, Guangdong Medical University, Dongguan 523808, Guangdong Province, China
  • Supported by:
    Provincial Innovation Training Program for College Students, No. S202210571052 (to LZY); Guangdong Provincial Natural Science Foundation (General Program), No. 2017A030313641, No. 2018A0303130203 (to ZCQ)

摘要:


文题释义:

长链非编码RNA(long non-coding RNA,lncRNA) Gm16104:Gm16104位于小鼠10号染色体qC1和qC2区之间,其包含2个外显子,转录本长度为401 bp,目前关于Gm16104的功能尚未见文献报道。
骨形态发生蛋白2:作为转化生长因子β超家族的一员,骨形态发生蛋白2是一种含有396个氨基酸的多肽分子。骨形态发生蛋白2能促进间充质干细胞分化为成骨细胞和软骨细胞,是体内一种重要的成骨诱导因子。


背景:间充质干细胞的成骨分化过程受多种分子调控,长链非编码RNA因可参与调控多种生物学过程而备受关注,但其对间充质干细胞成骨分化的调控作用尚未得到充分探索。

目的:探讨长链非编码RNA Gm16104对C3H10T1/2间充质干细胞成骨分化的影响。
方法:采用骨形态发生蛋白2诱导C3H10T1/2间充质干细胞成骨分化,成骨诱导5 d进行碱性磷酸酶染色检测细胞成骨分化情况,成骨分化第0,1,3,5天,采用qRT-PCR检测Alpl和Gm16104的表达水平。转染Gm16104过表达质粒然后诱导成骨分化,成骨诱导4 d进行碱性磷酸酶染色和qRT-PCR检测细胞的成骨分化状况,Western blot检测成骨相关信号通路蛋白的表达水平。

结果与结论:①成骨诱导5 d后,碱性磷酸酶活性显著提高;②与第0天比较,成骨诱导第1,3,5天,成骨标志基因Alpl表达升高,而Gm16104的表达水平下调;③pcDNA-Gm16104质粒转染C3H10T1/2细胞后Gm16104表达水平显著增加;④过表达Gm16104可抑制细胞的碱性磷酸酶活性以及成骨标志基因Alpl和成骨相关转录因子Osterix的表达水平;⑤过表达Gm16104显著抑制PI3K和Akt的磷酸化蛋白表达水平;⑥结果表明,过表达Gm16104可能通过PI3K/Akt信号通路抑制C3H10T1/2间充质干细胞成骨分化。

https://orcid.org/0009-0004-0075-0634 (林展莹);https://orcid.org/0000-0002-0536-5733 (左长清)

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: 长链非编码RNA, 间充质干细胞, Gm16104, 骨形态发生蛋白2, 成骨分化, PI3K, Akt

Abstract: BACKGROUND: The osteogenic differentiation of mesenchymal stem cells is regulated by a variety of molecules. Long non-coding RNA (lncRNA) has attracted much attention because they can participate in regulating a variety of biological processes, but the regulatory role of lncRNA on osteogenic differentiation of mesenchymal stem cells has not been fully explored.
OBJECTIVE: To explore the effect of lncRNA Gm16104 on osteogenic differentiation of C3H10T1/2 mesenchymal stem cells.
METHODS: The C3H10T1/2 mesenchymal stem cells were induced into osteogenic differentiation by bone morphogenetic protein-2. Alkaline phosphatase staining was performed to identify the osteogenic differentiation of the cells 5 days after osteogenic induction. Expression levels of alkaline phosphatase and lncRNA Gm16104 were detected by qRT-PCR after 0, 1, 3, and 5 days of osteogenic differentiation. After transfection of the overexpression plasmid of pcDNA-Gm16104, the osteogenic differentiation was identified by alkaline phosphatase staining and qRT-PCR 4 days after osteogenic induction. The expression levels of osteogenesis-related signalling pathway proteins were detected by western blot assay.
RESULTS AND CONCLUSION: (1) After 5 days of osteogenic induction, alkaline phosphatase activity was significantly increased. (2) Compared with 0 days, expression levels of the osteogenic marker gene alkaline phosphatase increased and expression levels of Gm16104 decreased after 1, 3, and 5 days of osteogenic induction. (3) Transfection of C3H10T1/2 cells with pcDNA-Gm16104 plasmid significantly increased the expression level of Gm16104. (4) Overexpression of Gm16104 inhibited alkaline phosphatase activity, the expression levels of the osteogenic marker gene alkaline phosphatase and the osteogenesis-related transcription factor Osterix. (5) Overexpression of Gm16104 inhibited phosphorylated protein expression of PI3K and Akt. (6) The above results suggest that overexpression of Gm16104 may inhibit osteogenic differentiation of C3H10T1/2 mesenchymal stem cells through the PI3K/Akt signaling pathway.

Key words: long non-coding RNA, mesenchymal stem cell, Gm16104, bone morphogenetic protein-2, osteogenic differentiation, PI3K, Akt

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