优化隔离方法和探索莲花衍生的细胞外囊泡在调节炎症和促进伤口愈合方面的治疗潜力
Kai-Jiun Lo1, Mu-Hui Wang2, Ching-Yao Kuo3
1Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan.
ACS biomaterials science & engineering
|June 9, 2025
概括
莲花衍生的细胞外囊泡 (LDEVs) 显示出抗炎和伤口愈合的潜力. 触流过 (TFF) 被认为是隔离这些有前途的植物衍生细胞外囊泡 (PDEV) 的有效方法.
科学领域:
- 生物技术是生物技术.
- 植物科学 植物科学
- 纳米医学是一种纳米医学.
背景情况:
- 植物衍生的细胞外囊泡 (PDEVs) 正因其多样化的生物活性而受到关注.
- 传统的中国药草为开发新型PDEV提供了丰富的来源.
- 莲花叶 (Nelumbo nucifera) 被选为研究PDEVs的来源.
研究的目的:
- 评估不同隔离方法对莲花衍生的EV (LDEV) 特性的影响.
- 评估LDEVs的生物活性,包括抗炎和伤口愈合潜力.
- 为大规模PDEV生产确定最佳的隔离策略.
主要方法:
- 使用触流过 (TFF),超离心 (UC),密度梯度超离心 (DGU) 和大小排除色谱 (SEC) 来隔离LDEV.
- 基于大小,泽塔潜力和纯度的LDEVs的表征.
- 在体外评估LDEV对LPS诱导的RAW264.7细胞的抗炎作用.
- 在体外评估LDEVs在HaCaT细胞上的伤口愈合能力.
- 通过RAW264.7和HaCaT细胞对LDEV内部化的分析.
主要成果:
- 通过各种方法分离的LDEV大小在130-160nm之间.
- 尽管zeta电位较低,但TFF产生的LDEV纯度最高 (3.69 ± 0.43 × 10^9颗粒/g).
- 所有测试的LDEV通过降低酸盐度来减轻LPS诱导的炎症.
- LDEVs促进了HaCaT细胞迁移,表明了伤口愈合的潜力.
- 证实了两种细胞类型对LDEVs的内部化.
结论:
- 在生物医学应用中,LDEVs具有显著的潜力.
- 高纯度PDEV的可扩展隔离TFF是一种有前途的方法.
- 对LDEV的进一步研究可能会导致新的治疗策略.
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