适应微环境的NIR-IIb多功能纳米酶平台用于细菌成像和专门的抗厌氧细菌牙周治疗
Suai Lin1,2, Tiehan Cui1,2, Yuxin Jiang3
1Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Nanchang University, Nanchang, Jiangxi, 330006, P. R. China.
Journal of nanobiotechnology
|March 7, 2025
概括
一个新的纳米酶系统通过局部化感染,产生氧气来对抗无氧细菌,并减少炎症来向牙周炎. 这促进了组织修复和骨再生,为牙周病提供了新的治疗策略.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术纳米技术
- 牙周医学 牙周医学
背景情况:
- 牙周炎是一种由斑块生物膜驱动的慢性炎症性疾病.
- 有效的治疗需要去除病原体,改善无氧条件,调节炎症和骨生长.
- 当前的疗法在同时解决这些复杂的病理因素方面面临挑战.
研究的目的:
- 开发一个多功能,响应近红外IIb (NIR-IIb) 纳米酶系统,用于牙周炎治疗.
- 同时解决病原体局部化,厌氧环境改善,抗炎和骨质生成需求.
- 研究纳米酶系统在促进牙周组织再生方面的治疗效果.
主要方法:
- 一个纳米酶系统的组装 (DMUP) 从化纳米粒子和多酶纳米酶.
- 使用ubiquicidin29-41 (UBI29-41) 的向细菌膜.
- 用于局部感染检测的NIR-IIb成像.
- 通过 (Mn) 纳米酶与过氧化 (H2O2) 反应,在现场生成氧气 (O2).
- 通过Mn纳米酶清理活性氧物种 (ROS).
- 通过Akt/mTOR通路通过使用Paeonol (Pae) 来调节巨细胞极化从M1到M2.
主要成果:
- 通过NIR-IIb光成像,DMUP有效地局部化了感染区域.
- 释放的Mn纳米酶产生了O2,抑制了无氧细菌并改善了微环境.
- Mn纳米酶和Pae通过清除ROS和转移巨细胞表型来协同减少炎症.
- 该系统促进了骨质基因表达,加速了牙周组织的再生.
结论:
- 开发的DMUP纳米酶系统为牙周炎提供了一个有前途的多方位治疗策略.
- 同时针对感染,厌氧环境,炎症和骨质生成,有助于牙周组织的修复.
- 这种方法有可能在牙周科中推进再生疗法.
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