分子联合组装策略调整了软骨再生的蛋白质构造
Chengkun Zhao1,2, Xing Li1,2, Xiaowen Han3
1National Engineering Research Center for Biomaterials, Sichuan University, 29# Wangjiang Road, Chengdu, Sichuan, 610064, P. R. China.
Nature communications
|February 19, 2024
概括
这项研究介绍了一种"分子布"的酸-凝联合组装策略. 这种生物材料通过提高水凝强度和减少免疫反应来增强软骨再生,为组织工程提供了一种新的方法.
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.
- 超分子化学 超分子化学
背景情况:
- 寡和多组合可以通过分子间相互作用创造类似蛋白质的生物功能.
- 开发具有增强机械性能和生物相容性的先进生物材料对于再生医学至关重要.
研究的目的:
- 开发一种新的和凝联合组装策略,灵感来自于"分子"用于软骨再生.
- 研究联合组装的水凝的结构,机械和生物特性.
- 评估水凝在体内修复质软骨的有效性.
主要方法:
- 采用"分子布"策略,与凝甲基烯基一起组装两性超分子三.
- 采用分子对接和动力学模拟来预测和分析联合组装行为.
- 进行了转录组分析,以评估细胞对水凝的反应.
- 在子膝关节关节缺陷中进行了皮下植入和体内研究.
主要成果:
- 联合组装策略成功地将酸与凝结合在一起,增强了有序的β片含量,并将压力强度提高了10倍以上.
- 转录基因组分析表明,水凝促进细胞增殖和体差异化.
- 与I型原蛋白相比,皮下植入显示显著降低了炎症反应和免疫性.
- 可照相治愈的,载有细胞的水凝在三个月内在子膝盖缺陷中显示出显著的氨酸软骨再生.
结论:
- 开发的酸联合组装策略为创建先进生物材料提供了一个有前途的方法.
- 这一策略显著改善了水凝的机械性能和生物相容性,降低了免疫性.
- 联合组装的水凝有效地促进质软骨的再生,突出其在骨科组织工程中的潜力.
相关概念视频
01:27Growth of Cartilage and Bone Tissue
Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
01:31Bone Remodeling and Repair
Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...