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来自脱分化的脂肪细胞的有条件的细胞外囊通过改变microRNAs促进骨再生

Yingyi Shen^1,2,3,4,5, Zihang Xu^1,2,3,4,5, Xinyu Zhang^1,2,3,4,5

¹Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.

|November 27, 2024

概括

脱分化的脂肪细胞 (DFATs) 衍生的细胞外囊泡 (EVs) 显示出对骨再生的前景. 有条件的DFATs-EVs通过微RNA增强骨髓介质干细胞 (BMSC) 骨质生成,为骨缺陷提供无细胞疗法.

科学领域:

再生医学是一种再生医学.
干细胞生物学干细胞生物学
生物材料科学生物材料科学

背景情况:

来自干细胞的细胞外囊泡 (EVs) 是骨再生的关键.
脱分化的脂肪细胞 (DFAT) 与脂肪衍生的干细胞 (ASC) 相比,由于增强的增殖和骨质生成潜力,具有优势.
这项研究研究了DFATs-EVs用于骨再生及其潜在机制.

研究的目的:

评估DFATs衍生的EVs在促进骨再生方面的有效性.
阐明DFATs-EVs介导的骨质生成中的分子机制,特别是miRNA参与.
建立DFATs-EVs作为潜在的骨缺陷的无细胞治疗策略.

主要方法:

使用天花板培养方法培养的DFAT;通过超离心隔离的EV.
评估DFATs-EVs对骨髓介质干细胞 (BMSC) 增殖,迁移和骨质生成的影响.
在DFATs的EV上进行了高通量miRNA测序,具有0和14天的骨质分化.

主要成果:

来自DFAT的EV与14天的骨质诱导显著增强了BMSC的增殖,迁移和骨质分化.
在14d-EV中,上调的miRNA与Notch信号传递和细胞迁移途径有关.
不同表达的miRNA的目标基因在骨质生成相关的信号通路中得到了丰富.

结论:

衍生于DFATs的EVs,特别是当通过骨质生成诱导进行条件化时,促进BMSC骨质生成分化.
有条件的DFATs-EVs中的微RNA调解它们的亲骨质效应.
有条件的DFATs-EVs代表了一种有前途的无细胞治疗方法,用于骨再生.

关键词:

骨再生骨再生没有分化的脂肪细胞.细胞外囊泡中的细胞外囊泡.骨质发生过程 (osteogenesis)

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