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相关概念视频

The Bone Matrix01:18

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...

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Studying the Effects of Matrix Stiffness on Cellular Function using Acrylamide-based Hydrogels
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了解乙烯基聚合物水凝中的矩阵刚度:在骨组织工程中的含义

Gyanendra Prasad Panda1, Debyashreeta Barik1,2, Mamoni Dash1

  • 1Institute of Life Sciences, Nalco Square, Bhubaneswar, Odisha 751023, India.

ACS omega
|April 29, 2024
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概括

这项研究探讨了水凝上的矿物诱导剂如何影响骨细胞分化和矩阵形成. 具有性酸酶 (ALP) 的聚二甲基酸 (PD) 基基基基基基基基酸 (PD) 基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基 基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基

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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.
  • 细胞生物学 细胞生物学

背景情况:

  • 矩阵弹性对于骨细胞分化,愈合和细胞外矩阵沉积至关重要,对于组织生长和维护至关重要.
  • 了解生物材料特性对细胞行为的影响,对于开发有效的组织工程策略至关重要.

研究的目的:

  • 评估无机纳米晶体 (纳米酸,性酸酶,纳米粘土) 在基于乙烯基的水凝上在调节矩阵刚性和细胞分化中的作用.
  • 评估这些改性水凝作为骨组织工程的支架的潜力.

主要方法:

  • 通过热交联制备使用聚二甲基甲酸 (PD) 和聚二基甲酸 (PH) 制备基于乙烯基的水凝.
  • 将矿物诱导剂 (纳米酸,酸酶,纳米粘土) 纳入水凝矩阵中.
  • 评估水凝的多孔性,刚性,非细胞毒性,细胞活力 (MC3T3-E1,hBMSCs) 和矿化 (阿利沙林试验).

主要成果:

  • 水凝的多孔性随着硬度的增加而降低.
  • 所有水凝成分均非细胞毒性,支持骨质前细胞和人类骨髓中酶干细胞的活力.
  • 含有性酸酶的PD水凝表现出最高的矿化能力,并为组织工程应用提供了有利的结构环境.

结论:

  • 将矿物诱导剂纳入水凝可以调节矩阵特性并影响骨细胞分化.
  • 与性酸酶功能化的PD水凝由于增强的矿化,显示出其作为骨组织工程的有效支架的承诺.
  • 这些发现突出了生成高级水凝作为研究生物矿物化过程的3D模型的潜力.