使用银纳米粒子增强光增强成像和保存 lysosome 动态的改进成像和保存
Sumaiya A Soha1,2, Araniy Santhireswaran2, Saaimatul Huq2
1Molecular Science Graduate Program, Toronto Metropolitan University, Toronto, Ontario, Canada, M5B 2K3.
Molecular biology of the cell
|July 5, 2023
概括
银纳米颗粒 (AgNPs) 增强细胞光,使内溶酶体通路的图像更清晰. 这种方法减少了激光功率,最大限度地降低了光毒性,并为先进的细胞生物学研究保留了 lysosome 动态.
科学领域:
- 细胞生物学 细胞生物学
- 纳米技术 纳米技术
- 显微镜的使用方法
背景情况:
- 活细胞光显微镜对于研究细胞动力学至关重要.
- 通常需要高光能,导致光漂白和光毒性.
- 贵金属纳米粒子 (AgNPs) 可以通过等离子体共振增强光.
研究的目的:
- 研究AgNPs在溶解体中增强光的潜力.
- 评估AgNP对 lysosomal 功能和动态的影响.
- 为了探索AgNP辅助的活细胞成像,减少光毒性.
主要方法:
- 细胞用AgNP进行化,以允许溶酶体积累.
- 测量了各种溶酶体标记物的光度 (德克斯,胆固醇,BSA,GFP-LAMP1) 使用和不使用AgNPs.
- 分析了 Lysosomal 的特性 (pH,降解能力,自,膜完整性).
- 在AgNPs的存在下,使用降低的激光功率跟踪了 lysosome 运动性.
主要成果:
- AgNPs显著增强了多个溶酶体向探针的光.
- 即使在GFP-LAMP1.1.的溶酶体膜上也观察到增强的光.
- 溶解体功能和完整性在很大程度上不受AgNP的影响.
- AgNPs使得随着激光功率的降低,可以跟踪 lysosome 运动,从而保持动态.
结论:
- 用AgNP增强的光为研究内溶酶体通路提供了一种有前途的方法.
- 这种方法可以减少激光功率,最大限度地减少光毒性,并保持细胞动态.
- 可以安全地使用AgNP来改善溶解体过程的成像.
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