多功能生物仿真血瘤微球用于持续的局部硫化 (H2S) 输送,以增强血管化骨再生
Chengwei Zhou1,2,3,4,5, Kanbin Wang2,3,4,5, Chengxin Dai6
1Department of Orthopedic Surgery, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|January 30, 2026
概括
这项研究引入了仿生血瘤微球,利用硫化 (H2S) 释放来增强骨修复. 微球促进血管生成,减少炎症,并激活细胞自,以改善骨再生.
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:
- 大型骨缺陷的愈合是复杂的,通常受到生理因素的限制.
- 传统的治疗方法侧重于被动结构支持,而不是积极的生物调节.
- 血液瘤通过其再生性质在自然骨愈合中发挥着至关重要的作用.
研究的目的:
- 开发一种仿生策略,模仿血瘤的再生能力,以改善骨的修复.
- 创建一个双组件系统,用于控制治疗剂的释放.
- 研究硫化 (H2S) 在促进骨再生方面的潜力.
主要方法:
- 开发微流体生物模拟血瘤微球,其外层具有pH响应的GelMA和NaHS载荷的脂质体内核.
- 利用骨缺陷的酸性环境触发H2S的释放.
- 评估H2S对炎症,血管生成,细胞自和骨髓介质干细胞 (BMSCs) 的骨质基因分化的影响.
主要成果:
- 在酸性条件下,生物模拟微球成功释放了H2S,模仿了天然的血液瘤功能.
- 控制的H2S释放有效地减少了慢性炎症.
- 该策略促进了血管新生和骨质新生,并激活了BMSCs中的自性.
结论:
- 生物仿真血瘤微球通过积极调节愈合过程,为骨修复提供了一种新的策略.
- 从这些微球中控制释放的H2S协调了关键的骨质生成过程,包括炎症解消,血管生成和细胞自.
- 这种方法将范式从被动植入物转变为积极的生物调节,以改善骨再生结果.
相关概念视频
01:43Sustainable Development
15.1K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
15.1K
00:26Hydrogen Bonds
133.1K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
133.1K
01:04Hydrogen Bonds
14.1K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
14.1K
02:26Preparation and Reactions of Sulfides
5.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.8K
02:17Structure and Nomenclature of Thiols and Sulfides
5.7K
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
5.7K
01:26Design Example: Sustainability in Concrete Building
416
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
416