2024年10月11日
In this protocol, we show how to prepare axolotl tissue for atomic force microscopy (AFM) and perform indentation measurements in intact and regenerating limb cartilage.
We're interested in understanding the role of mechanical signals on the regeneration process. For this, it is key to have reliable tools that allows the measurement of mechanical properties such as the AFM. There are multiple techniques for probing mechanical properties of tissues.
For example, share geometry or elastography. However, the gold standard for small tissue samples or probing mechanical properties of tissues at a cellular scale is still the AFM. One of the most challenging steps is preparing the sample because we need to ensure the maximum structural integrity so that we can reliably measure mechanical properties of samples with the AFM.
We believe that our findings will motivate more mechanistic studies on how mechanical cues affect tissue regeneration. In addition, the obtained results can instruct more realistic tissue engineered models to conduct such experiments.
本研究利用墨西哥钝口螈肢体软骨作为模型,探讨机械信号在组织再生过程中的作用。该实验方案重点介绍如何制备墨西哥钝口螈组织以用于原子力显微镜(AFM)检测,从而精确测量对再生至关重要的力学特性。
对组织力学特性的定量测量对于降低再生医学靶点的风险以及验证工程化组织模型至关重要。原子力显微镜(AFM)能够在稳态和再生过程中实现对软骨生物力学的高分辨率评估,从而提高转化研究工作流程的可预测性。结合基于AFM的力学图谱分析,有助于组织工程项目的早期发现、模型确证以及基于风险评估的推进决策。
基于原子力显微镜的力学表征技术贯穿从早期发现到临床前验证的全过程,为靶点筛选和工程化组织的性能评估提供依据。