高强度和高度的ECM薄膜具有修复外围神经的潜力
Fangfang Wang1,2,3, Haiyang Wang4, Xiaotong Shan5
1Medical Research Center, The First Affiliated Hospital of Ningbo University; Ningbo University, Ningbo 315010, People's Republic of China.
Biomedical materials (Bristol, England)
|December 4, 2023
概括
研究人员开发了具有特殊强度和性的新型细胞外基质 (ECM) 薄膜,克服了当前ECM材料的局限性. 这些高性能ECM薄膜对组织再生应用有前途,特别是在外围神经修复方面.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 组织工程是组织工程.
背景情况:
- 细胞外基质 (ECM) 支架为再生提供了显著的生物优势.
- 目前的ECM水凝由于机械性能较弱而存在局限性.
- 提高机械强度对于更广泛的ECM材料应用至关重要.
研究的目的:
- 创建和评估一种基于ECM的新型材料,具有卓越的机械性能.
- 评估这种新材料在组织修复应用中的潜力.
主要方法:
- 从纯粹的ECM制造ECM薄膜,没有交叉连接剂.
- 机械测试ECM薄膜,包括强度和性评估.
- 在ECM膜上使用PC12和施万细胞进行体外细胞培养研究.
主要成果:
- ECM薄膜表现出了出色的性,能够承受折叠和缩而不会破裂.
- 实现了高强度水平 (86 ± 17.25 MPa,最大115 MPa),超过了现有的天然和合成聚合物薄膜.
- PC12和施万细胞在ECM膜上表现出良好的增殖,在PC12细胞中促进了神经元的外生长.
结论:
- 新型ECM薄膜具有特殊的强度和性,超过当前的生物材料.
- 这些ECM膜由于其机械特性和生物相容性,显示出对外围神经修复的巨大潜力.
- 这一进步可以扩大基于ECM的再生材料的应用范围.
相关概念视频
01:42The Extracellular Matrix
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 MatrixThe extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse molecules.
01:29The Extracellular Matrix
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...
01:13Cell-matrix's Response to Mechanical Forces
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...
01:26Extracellular Matrix
Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...