牙根器官自组自产后人类牙干细胞的自组合
Tia C Calabrese1,2, Kristi Rothermund2, Claire M Gabe2,3
1Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Tissue engineering. Part A
|December 21, 2023
概括
研究人员使用牙干细胞设计了一个完整的牙根结构. 这种无脚手架的方法产生生物模拟器官,用于研究牙组织修复和潜在的治疗应用.
科学领域:
- 再生医学是一种再生医学.
- 生物材料科学 生物材料科学
- 发展生物学 发展生物学
背景情况:
- 同时以空间有组织的方式再生多样化的牙根组织仍然是一个挑战.
- 之前的工作建立了无脚手架的方法,从牙干细胞中制造牙和PDL-水泥器官.
- 利用干细胞的自我组织能力是复杂组织工程的关键.
研究的目的:
- 通过使用牙干细胞,设计可模仿全牙根结构的器官.
- 研究牙髓干细胞/祖细胞 (DPSCs) 和牙周带干细胞/祖细胞 (PDLSCs) 的空间组织和分化潜力.
- 为研究牙组织再生和潜在的治疗应用建立一个仿生模型.
主要方法:
- 使用人类DPSC和PDLSC的异质混合物进行无脚手架组织工程.
- 构造形成和评估2天内的空间细胞分布.
- 组织学,微计算机断层扫描和免疫光分析以评估组织形成和蛋白质表达.
主要成果:
- PDLSC和DPSC在空间上进行了自我组织,PDLSC位于外围,DPSC位于中心.
- 器官体呈现出矿物质结构,中央核心未经矿物质化,类似于天然牙根解剖学.
- DPSCs分化为牙状组织,而PDLSCs形成了状和PDL状组织,通过特定的蛋白质表达得到证实.
结论:
- DPSCs和PDLSCs具有固有的自我编排能力,形成一个完整的牙根状结构.
- 工程牙根有机体作为研究牙组织修复的仿生模型.
- 这些有机体具有作为生物牙科植入物治疗用途的潜力.
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