酶可编程DNA-PEG水凝空间时间调节骨再生微环境
Xiang Wu1,2,3,4, Fuxiao Wang1,2, Ruiyang Li5
1Organoid Research Center, Institute of Translational Medicine, Shanghai University, Shanghai, 200444, China.
Advanced materials (Deerfield Beach, Fla.)
|November 3, 2025
概括
这项研究引入了一种酶响应的DNA-聚乙烯糖醇 (PEG) 水凝,用于骨再生. 这种先进的水凝积极协调血管新生,骨质新生和矿化,以改善组织修复.
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:
- 传统的水凝缺乏对骨再生的时空控制.
- 被动释放药物限制了当前水凝系统的有效性.
- 需要先进的材料来模仿自然的骨愈合过程.
研究的目的:
- 开发一种酶响应的DNA-PEG水凝,用于控制骨再生.
- 积极协调连续的生物过程:血管新生,骨质新生和矿物化.
- 为了研究水凝促进骨形成的机制.
主要方法:
- 制造具有MMP可切割连接器的酶响应DNA-PEG水凝.
- 纳入VEGF结合DNA链以控制释放.
- 使用分子动力学模拟来理解矿化机制.
- 在体内评估水凝在骨再生中的性能.
主要成果:
- 水凝成功释放了VEGF,促进了血管生成和骨质生成.
- 通过DNA降解的受控酸盐释放促进了矿化.
- 证明了增强的血管化,骨质分化和矿物沉积.
- 分子动力学模拟证实了增强的酸形成.
结论:
- 开发的DNA-PEG水凝作为多相骨再生的生物反应平台.
- 这种材料设计能够与生物微环境进行动态交互.
- 为复杂组织修复和骨缺陷治疗提供了一个有希望的策略.
更多相关视频
11:20Site-Directed Immobilization of Bone Morphogenetic Protein 2 to Solid Surfaces by Click Chemistry
Published on: March 29, 2018
8.0K
10:32Author Spotlight: Simple Establishment of a Vascularized Osteogenic Bone Marrow Niche Using Pre-Cast Poly(Ethylene Glycol) (PEG) Hydrogels in an Imaging Microplate
Published on: May 19, 2023
3.1K
相关概念视频
01:40Bone Remodeling
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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...