细胞内合成的人工外体治疗急性肺损伤
Lu Liang1, Weijie Peng1, Aiping Qin1
1The Fifth Affiliated Hospital, Key Laboratory of Molecular Target & Clinical Pharmacology, NMPA, and the State Key Laboratory of Respiratory Disease, The School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou 511436, P.R. China.
ACS nano
|August 1, 2024
概括
一种新型的人工外体 (EVM) 装有脊椎素 (VER) 有效治疗急性肺损伤 (ALI) 和急性呼吸困扰综合征 (ARDS). 这种生物相容的EVM在ALI模型中提高了肺功能和生存率.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 呼吸系统医学 呼吸系统医学
背景情况:
- 由于高死亡率,急性肺损伤 (ALI) 和急性呼吸困难综合征 (ARDS) 存在重大治疗挑战.
- 一种光敏化剂维特波芬 (VER) 对于ALI/ARDS治疗具有前景,但由于生物可用性和特异性不佳而受到限制.
- 现有的ALI/ARDS治疗方法需要改进,以提高疗效和患者的治疗结果.
研究的目的:
- 开发一种新型的药物输送系统,用于甲状腺素 (VER),以克服其在治疗ALI/ARDS方面的局限性.
- 使用半孔纳米颗粒 (MSN) 和干细胞外细胞化,创建一个有 VER 核心的人造外体 (EVM).
- 在ALI/ARDS模型中评估EVM的治疗潜力,生物分布和安全性.
主要方法:
- 将VER加载到半孔纳米粒子 (MSN) 中.
- 通过从小鼠骨髓衍生中介细胞干细胞 (mBMSCs) 的VER-MSNs的外细胞合成人造外细胞 (EVM).
- 在体外和体内ALI模型中评估EVM的抗炎作用,肺积累,治疗疗效和生物相容性.
主要成果:
- EVM表现出强大的抗炎作用和在受伤的肺部有针对性的积累.
- 在ALI小鼠中,EVM显著改善了肺功能,减少了肺损伤,并增加了5倍的存活率.
- EVM表现出良好的生物相容性和近红外光辐射,用于体外和体内追踪.
结论:
- 载有VER的细胞内合成人造外体 (EVM) 是对ALI/ARDS的有前途的治疗策略.
- EVM克服了VER的局限性,提供了更高的效率,有针对性的交付和可追溯性.
- 这种新的纳米医学方法在治疗严重肺损伤方面具有显著的临床转化潜力.
相关概念视频
Overview of Exosomes
2.7K
Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
2.7K
Acute Respiratory Failure-V
126
The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
Ensure that patients are monitored continuously for their response to therapy, including changes in...
126


