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预测患者变化和痕信号对in situ血管组织工程的预测影响
Jordy G M van Asten1,2, Cecilia M Sahlgren1,2,3, Jay D Humphrey4
1Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands.
Annals of biomedical engineering
|November 8, 2025
概括
计算模型显示,炎症,脚手架退化和前拉伸显著影响组织工程血管移植 (TEVG) 的变性. 操纵Notch路径显示了改善TEVG功能的潜力,但需要进一步优化.
科学领域:
- 生物医学工程 生物医学工程
- 再生医学是一种再生医学.
- 血管生物学 血管生物学
背景情况:
- 在位血管组织工程旨在使用可生物降解的支架创建功能性血管替代.
- 组织工程血管移植 (TEVGs) 面临着功能有限,高失败率和结果变化的挑战.
- 目前的优化方法不足,TEVG变化的关键来源仍未确定.
研究的目的:
- 通过计算来调查组织工程血管移植 (TEVG) 结果的变异性来源.
- 探索操纵Notch信号通路对TEVG发育和功能的影响.
- 在患者特定的条件下,确定导致TEVG结果变化的关键因素.
主要方法:
- 模拟了TEVG从可降解支架的演变,使用免疫机械介导的生长和重塑.
- 纳入患者特定条件和Notch信号通路到计算模型中.
- 分析了差异性炎症产生,脚手架退化和轴向预拉伸对TEVG结果的影响.
主要成果:
- 差异性炎症产生,脚手架降解率和脚手架轴前拉伸被确定为TEVG结果变化的主要来源.
- 将Jagged连接物固定在脚手架上并没有显著减少结果的变化,但改善了TEVG功能的一些方面.
- 计算模型在各种条件下成功模拟了TEVG演变,突出显示了Notch信号的影响.
结论:
- 开发的计算模型可以通过模拟患者特定条件下的Notch路径操纵来推进TEVG优化.
- 解决已识别的可变性来源,如炎症和支架特性,对于提高TEVG成功率至关重要.
- 针对Notch路径,可能与其他策略相结合,为增强TEVG功能提供了一个有希望的途径.
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