多功能水凝装载有4-octyl itaconate和外体,通过Keap1-Nrf2通路诱导糖尿病感染骨缺陷的骨再生
Yizhou Wan1, Qing Gao1, Bing Ye1
1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology, 1277 Jiefang Avenue, Wuhan, 430022, China.
Materials today. Bio
|March 12, 2025
概括
一种含有银,4-octyl itaconate (4OI) 和exosomes (EXO) 的新型自愈水凝通过减少氧化应激和促进骨再生,有效治疗糖尿病感染的骨缺陷.
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.
- 糖尿病并发症 糖尿病并发症
背景情况:
- 糖尿病感染的骨缺陷由于延迟愈合,细菌感染和氧化应激会带来重大临床挑战.
- 现有的治疗方法往往难以解决这些缺陷的复杂多因素性质.
研究的目的:
- 开发和评估一种新型的自我愈合的多功能水凝 (Ag@PEG-4OI/EXO),用于增强糖尿病感染骨缺陷的愈合.
- 为了研究水凝的抗氧化,线粒体保护,抗菌和骨质生成性质.
主要方法:
- 使用银离子 (Ag+),4-臂-PEG-SH,4-八伊他康酸盐 (4OI) 和外体 (EXO) 制造一种自我愈合的水凝.
- 通过Keap1-Nrf2途径,线粒体保护和抗菌活性对抗氧化作用的体外评估.
- 在糖尿病感染骨缺陷模型中的体内评估,以评估神经纤维再生和骨愈合.
主要成果:
- Ag@PEG-4OI/EXO水凝显示出显著的抗菌特性,并有效地提供了4OI和EXO.
- 4OI减轻了活性氧物种 (ROS) 的损伤,并保护了线粒体功能,促进了神经血管化和骨质分化.
- 在体内研究显示,CGRP+神经纤维的再生增强,糖尿病感染骨缺陷患者的骨愈合改善.
结论:
- Ag@PEG-4OI/EXO水凝是一种有前途的多功能策略,用于治疗糖尿病感染的骨缺陷.
- 水凝抗击感染,减少氧化应激和促进组织再生的能力提供了一种可行的治疗方法.
相关概念视频
01:12Role Of Notch Signalling In Intestinal Stem Cell Renewal
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
01:28Insulin: The Receptor and Signaling Pathways
Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but this inhibition is released...