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活性氧物种可以抵消斑马鱼的伤口收缩,促进伤口愈合

Chang Ding¹, Linlin Li², Yueyang Wang¹

¹Department of Biological Sciences, Purdue University, West Lafayette, Indiana.

Biophysical journal

|September 21, 2025

概括

反应性氧物种 (ROS) 通过影响肌酸酸化来抑制伤口收缩. 这一发现澄清了ROS对于有效的伤口愈合和组织修复至关重要.

科学领域:

细胞生物学细胞生物学
生物化学生物化学
再生医学是一种再生医学.

背景情况:

反应性氧物种 (ROS) 在伤口愈合中起到信号分子的作用.
对于ROS在调节伤口收缩中的确切作用仍然不完全理解.

研究的目的:

阐明ROS影响伤口收缩和关闭的机制.
研究ROS调制对组织修复和再生的影响.

主要方法:

药理上抑制ROS和actomyosin的作用.
长期ROS枯竭的duox基因的Morpholino介导的敲击.
基于原子力显微镜的纳米缩影用于组织硬度评估.
在线性弹性模拟中.

主要成果:

通过抑制ROS,通过降低肌素调节轻链酸化来抵消伤口收缩.
急性ROS抑制会延迟伤口的关闭并阻碍其再生,而actomyosin抑制则不会.
慢性ROS枯竭导致组织硬性变化,过度收缩,愈合延迟和再生能力受损.
计算模拟支持观察到的收缩动态.

结论:

通过调节actomyosin收缩性,ROS在促进伤口关闭方面发挥着至关重要的作用.
调节ROS水平会影响组织硬性和收缩动态,影响愈合结果.
了解ROS调节为促进伤口修复期间组织完整性和平衡提供了新的见解.

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