人类骨组织衍生的ECM水凝:通过处理参数控制物理化学,生物化学和生物特性
Yang-Hee Kim1, Gianluca Cidonio1,2,3, Janos M Kanczler1
1Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Institute of Developmental Sciences, University of Southampton, SO16 6YD, United Kingdom.
Bioactive materials
|October 8, 2024
概括
研究人员开发了新的人类骨外细胞矩阵 (ECM) 水凝,用于骨再生. 优化粉末大小和消化时间提高了蛋白质含量和骨质分化,显示了骨修应用的潜力.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 整形外科的研究研究.
背景情况:
- 脱细胞化组织,特别是细胞外基质 (ECM),由于其固有的结构和组成完整性,对组织再生具有前景.
- 人类骨 ECM 衍生材料在再生应用方面尚未得到充分探索.
- 控制ECM衍生水凝的生理化学和生物特性对于优化其性能至关重要.
研究的目的:
- 为了研究骨粉大小和酶消化时间对人类骨 ECM 水凝的特性的影响.
- 评估这些量身定制的ECM水凝在促进骨质分化和骨再生方面的潜力.
主要方法:
- 人类骨 ECM 用不同的骨粉大小 (45-250 微米,250-1000 微米,1000-2000 微米) 和酶消化时间 (3,5,7 天) 处理成水凝.
- 评估了生理化学性质 (蛋白质度,凝强度) 和生物活性 (人类骨髓衍生的肌层细胞的骨质分化 - - HBMSCs).
- 分析了rheological属性,以确定凝的特征.
主要成果:
- 减少骨粉大小和延长消化时间显著增加了ECM水凝中的蛋白质度和多样性.
- 来自较小的骨粉 (45-250微米) 和较长的消化时间的水凝显示出增强的凝强度.
- 与对照组相比,在优化的ECM水凝上培养的HBMSC显示出明显改善的骨质分化,表明生物活性增强.
结论:
- 调节骨粉大小和酶消化时间可以有效控制人类骨 ECM 水凝的特性.
- 这些量身定制的水凝显示出作为骨再生和修复的生物活性支架的巨大潜力.
- 这些发现为开发用于骨科应用的先进生物材料开辟了新的途径.
相关概念视频
The 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.
The 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...
Role of Matrix Metalloproteases in Degradation of ECM
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
A...
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Overview of Cell-Matrix Interactions
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...
Extracellular 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...


