动态变化的细胞外矩阵刚度驱动了施万细胞表型
Alyssa Montgomery1, Jennifer Westphal1, Andrew E Bryan2
1Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
Matrix biology plus
|January 27, 2025
概括
施万细胞 (SCs) 对于周围神经系统 (PNS) 的再生至关重要. 这项研究使用了动态生物材料来展示随时间变化的机械特性如何影响SCs,为未来的PNS疗法揭示了洞察力.
科学领域:
- 生物材料科学 生物材料科学
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
背景情况:
- 施万细胞 (SCs) 对于周围神经系统 (PNS) 功能和受伤后的再生至关重要.
- SCs对物理和化学线索做出反应,以帮助轴突修复和细胞外矩阵 (ECM) 重塑.
- 在ECM微环境中动态的,时间依赖的变化对SCs受伤后的影响尚不清楚.
研究的目的:
- 研究施万细胞 (SC) 对微环境机械性质暂时变化的反应.
- 使用可调节的生物材料来模拟外周神经系统 (PNS) 创伤后的动态ECM变化.
- 了解动态机械线索如何影响SC表型和可塑性,以改善再生疗法.
主要方法:
- 开发一种可调节紫外线的聚二甲基 (PDMS) 生物材料,具有动态变化的刚度.
- 在静态 (硬/软) 和动态变硬PDMS基板上培养施万细胞 (SCs).
- 对SC表型标记物的分析,包括应力纤维,YAP表达和c-Jun生产.
主要成果:
- 与静态对照相比,在动态生物材料上培养的SCs表现出增加的应力纤维.
- 在动态基板上的SC中观察到YAP表达升高.
- 在SC中发现了对时间变化的机械环境做出反应的c-Jun生产波动.
结论:
- 基质刚性的动态变化显著影响施万细胞 (SC) 表型和行为.
- 机械调节的生物材料可以有效地模拟PNS损伤后的时间微环境变化.
- 这种方法为开发用于PNS再生的先进治疗策略提供了有希望的途径.
更多相关视频
10:19Studying the Effects of Matrix Stiffness on Cellular Function using Acrylamide-based Hydrogels
Published on: August 10, 2010
22.0K
11:37Human Pluripotent Stem Cell Culture on Polyvinyl Alcohol-Co-Itaconic Acid Hydrogels with Varying Stiffness Under Xeno-Free Conditions
Published on: February 3, 2018
9.2K
相关概念视频
01:13Cell-matrix's Response to Mechanical Forces
2.5K
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
2.5K
01:29The Extracellular Matrix
8.8K
Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
8.8K
01:24Overview of Cell-Matrix Interactions
7.0K
The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
7.0K