皮肤伤口愈合的时空空间多尺度细胞建模
Youfang Cao1, Jieling Zhao2, Lin Chen3
1Department of Bioengineering, University of Illinois Chicago, Chicago, IL 60607.
Biophysical journal
|March 14, 2026
概括
一个新的计算模型模拟了皮肤伤口愈合,揭示了细胞外基质 (ECM) 对于协调细胞行为至关重要. 最佳的愈合取决于平衡的ECM再生,这表明过度的ECM产生可能会阻碍恢复.
科学领域:
- 计算生物学是一种计算生物学.
- 组织工程是组织工程.
- 生物医学建模模型
背景情况:
- 人体皮肤的伤口愈合涉及复杂的细胞迁移和再生.
- 通过信号细胞因子和细胞外基质 (ECM) 进行细胞间通信至关重要.
- 现有的模型缺乏详细的细胞力学和几何变化.
研究的目的:
- 开发和验证一个多尺度组织建模框架,即动态细胞有限元素方法 (DyCelFEM).
- 研究ECM在协调伤口愈合期间细胞迁移和再生中的作用.
- 探索转变生长因子β (TGFβ) 水平对伤口愈合结果的影响.
主要方法:
- 开发了动态细胞有限元素方法 (DyCelFEM),用于模拟形伤口愈合.
- 集成的细胞类型特定的细胞内电路用于静态细胞行为决定 (生长,迁移,死亡).
- 用生物数据验证模型参数,并将模拟结果与实验性伤口数据进行比较.
主要成果:
- 在DyCelFEM准确地复制了在组织学成像中观察到的定性伤口愈合行为.
- 模拟正确捕获了TGFβ和原表达的纵向动态.
- 该模型确定了ECM作为协调细胞迁移和再生的细胞激素信号的关键调解者.
结论:
- 该DyCelFEM是一个合格的工具,用于研究伤口愈合 in silico.
- 最佳的伤口愈合需要精心控制的ECM再生.
- 增加ECM生产的治疗药物可能没有益处,可能会损害治愈结果.
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