中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (19): 2981-2987.doi: 10.12307/2024.179

• 脐带脐血干细胞 umbilical cord blood stem cells • 上一篇    下一篇

维生素D3减轻高糖暴露诱导氧化应激促进人脐带间充质干细胞的成骨分化

谢  婷1,刘婷婷1,曾雪慧1,李亚敏1,周庞虎2,易念华1   

  1. 1湖北省妇幼保健院妇女保健科,湖北省武汉市   430070;2 武汉大学人民医院骨科,湖北省武汉市   430060
  • 收稿日期:2023-05-08 接受日期:2023-07-08 出版日期:2024-07-08 发布日期:2023-09-25
  • 通讯作者: 易念华,硕士,主任医师,湖北省妇幼保健院妇女保健科,湖北省武汉市 430070 周庞虎,博士,主任医师,博士生导师,武汉大学人民医院骨科,湖北省武汉市 430060
  • 作者简介:谢婷,女,1981年生,湖北省荆州市人,汉族,硕士,副主任医师,主要从事骨质疏松、复发性流产、多囊卵巢综合征等研究。
  • 基金资助:
    湖北省重点研发计划项目(2021BCA147),项目负责人:周庞虎

Vitamin D3 attenuates high-glucose exposure-induced oxidative stress to promote osteogenic differentiation of human umbilical cord mesenchymal stem cells

Xie Ting1, Liu Tingting1, Zeng Xuehui1, Li Yamin1, Zhou Panghu2, Yi Nianhua1   

  1. 1Department of Women’s Health Care, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, Hubei Province, China; 2Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
  • Received:2023-05-08 Accepted:2023-07-08 Online:2024-07-08 Published:2023-09-25
  • Contact: Yi Nianhua, Master, Chief physician, Department of Women’s Health Care, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, Hubei Province, China Zhou Panghu, PhD, Chief physician, Doctoral supervisor, Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, China
  • About author:Xie Ting, Master, Associate chief physician, Department of Women’s Health Care, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, Hubei Province, China
  • Supported by:
    Hubei Provincial Key Research and Development Program, No. 2021BCA147 (to ZPH)

摘要:


文题释义:

高糖暴露:糖尿病是骨质疏松的重要病因之一,高葡萄糖环境会诱导细胞出现氧化应激和功能障碍,并导致骨质疏松的临床治疗效果降低。最近的研究报道,高糖暴露会抑制间充质干细胞的成骨分化能力,探究如何逆转高糖暴露诱导的成骨分化抑制成为干细胞领域的研究焦点。
人脐带间充质干细胞:与其他间充质干细胞相比,人脐带间充质干细胞具有来源丰富、取材方便、分化潜力高等优势,是目前干细胞应用的最佳来源。在骨质疏松疾病中,有效促进人脐带间充质干细胞的成骨分化能够为其临床应用提供新思路。


背景:糖尿病骨质疏松症逐渐受到公众的关注,然而鲜有研究报道高糖环境对人脐带间充质干细胞成骨分化的影响和相应的治疗策略。

目的:探讨维生素D3恢复高糖环境中人脐带间充质干细胞成骨分化的潜力。
方法:通过CCK-8法检测人脐带间充质干细胞活力来筛选适宜的维生素D3干预浓度。在高葡萄糖条件下,通过RT-qPCR、蛋白质印迹、免疫荧光、JC-1线粒体膜电位、茜素红染色和β-半乳糖苷酶染色等实验评估维生素D3干预后人脐带间充质干细胞的成骨分化潜能、细胞内活性氧积累、线粒体膜电位改变和细胞衰老情况,并探讨了潜在的机制。

结果与结论:①维生素D3在0.1 μmol/L至1 mmol/L范围内均能显著促进人脐带间充质干细胞的增殖;②高糖环境下调了人脐带间充质干细胞中成骨相关基因α1-Ⅰ型胶原蛋白、碱性磷酸酶、Runt相关转录因子2、骨钙蛋白的mRNA和蛋白表达水平,诱发了氧化应激和细胞衰老;③维生素D3在10 μmol/L的干预浓度下显著恢复了高糖条件下人脐带间充质干细胞的成骨表型,并通过激活Nrf2/HO-1信号通路减轻了细胞内的氧化应激和细胞衰老;④结果表明,高糖环境中人脐带间充质干细胞的成骨分化能力降低,维生素D3可以部分提高其成骨分化能力并减轻细胞损伤。

https://orcid.org/0000-0002-7020-4258 (周庞虎) 

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: 糖尿病骨质疏松症, 人脐带间充质干细胞, 维生素D3, 高血糖, 线粒体功能障碍, 活性氧, 细胞衰老, 成骨分化

Abstract: BACKGROUND: Diabetic osteoporosis is gaining public attention. However, few studies have reported the effect of a high-glucose environment on the osteogenic differentiation of human umbilical cord mesenchymal stem cells and the corresponding therapeutic strategies.
OBJECTIVE: To investigate whether vitamin D3 can restore the osteogenic differentiation potential of human umbilical cord mesenchymal stem cells in a high-glucose environment. 
METHODS: The viability of human umbilical cord mesenchymal stem cells was detected by CCK-8 assay to screen the appropriate vitamin D3 intervention concentration. Under the high-glucose environment, RT-qPCR, western blot assay, immunofluorescence, JC-1 mitochondrial membrane potential, alizarin red staining, and β-galactosidase staining were used to evaluate the osteogenic differentiation potential, intracellular reactive oxygen species accumulation, mitochondrial membrane potential alteration, and cell senescence of human umbilical cord mesenchymal stem cells after vitamin D3 intervention. The underlying mechanism was also discussed.
RESULTS AND CONCLUSION: (1) Vitamin D3 significantly promoted the proliferation of human umbilical cord mesenchymal stem cells in the range of 0.1 μmol/L to 1 mmol/L. (2) High-glucose environment down-regulated the mRNA and protein level expressions of osteogenic-related genes α1-I collagen, alkaline phosphatase, Runt-associated transcription factor 2, and osteocalcin in human umbilical cord mesenchymal stem cells, which induced oxidative stress and cellular senescence. (3) Vitamin D3 at an intervention concentration of 10 μmol/L significantly restored the osteogenic phenotype of human umbilical cord mesenchymal stem cells under high-glucose conditions and attenuated intracellular oxidative stress and cellular senescence by activating the Nrf2/HO-1 signaling pathway. (4) These findings suggested that the osteogenic differentiation ability of human umbilical cord mesenchymal stem cells was reduced in the high-glucose environment, and vitamin D3 could partially improve their osteogenic differentiation ability and reduce cell damage.

Key words: diabetic osteoporosis, human umbilical cord mesenchymal stem cell, vitamin D3, hyperglycemia, mitochondrial dysfunction, reactive oxygen species, cellular senescence, osteogenic differentiation

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