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26–28 Dec 2020
Asia/Shanghai timezone
2020金属组学研讨会暨北京金属组学平台年会及原子光谱沙龙年会顺利结束,期待再次相聚!

ICPMS单细胞分析

Not scheduled
15m
特邀报告

Speaker

斌 胡 (Wuhan University)

Description

由于细胞异质性的存在,单细胞水平分析能更有效地体现细胞群的真实状态。然而,单细胞分析是分析化学相关技术发展的一大挑战。电感耦合等离子体质谱(ICPMS)作为元素特异性检测器,基于时间分辨的检测模式已被用于单细胞内痕量元素的测定。然而,这种测定方法中,由于气溶胶的形成是随机的,难以保证单个气溶胶中都只含有一个细胞。基于微流控芯片的单细胞分析体系与ICPMS联用可以解决以上问题。本课题组开展了微流控芯片-ICPMS单细胞分析研究,建立了多种微流控芯片-ICPMS单细胞分析新方法。基于流体聚焦设计了液滴微流控芯片,并与ICPMS在线联用实现了单细胞内痕量Zn的测定[1],并进一步应用该分析体系研究了单细胞水平上细胞对Au NPs的摄入行为[2];为了简化芯片的设计与制作,利用商品化部件组建了3D液滴微流体装置,建立了3D液滴微流体-ICPMS单细胞分析新方法对比研究了细胞摄入Ag+和Ag NPs的行为差异[3];为了提升液滴微流控芯片与ICPMS的兼容性,以气体取代有机相设计了water-in-gas液滴微流体装置,并与ICPMS联用实现了单细胞水平上Cd暴露细胞内Cd和Zn的测定[4];为了研究FePt NPs在细胞内的降解行为,设计并制作了液滴分裂微流控芯片与ICPMS联用,实现了单细胞内因FePt NPs降解形成的游离Fe和Pt的检测[5]。 参考文献: [1] Wang H, Chen B, He M, Hu B, A Facile Droplet-Chip-Time-Resolved Inductively Coupled Plasma Mass Spectrometry Online System for Determination of Zinc in Single Cell, Anal. Chem., 2017, 89: 4931-4938. [2] Wang H, Chen B, He M, Li X, Chen P, Hu B, Study on uptake of gold nanoparticles by single cells using droplet microfluidic chip-inductively coupled plasma mass spectrometry, Talanta, 2019, 200: 398-407. [3] Yu X, Chen B, He M, Wang H, Hu B, 3D Droplet-Based Microfluidic Device Easily Assembled from Commercially Available Modules Online Coupled with ICPMS for Determination of Silver in Single Cell, Anal. Chem., 2019, 91: 2869-2875. [4] Yu X, Chen B, He M, Wang H, Hu B, Argon Enclosed Droplet Based 3D Microfluidic Device Online Coupled with Time-Resolved ICPMS for Determination of Cadmium and Zinc in Single Cells Exposed to Cadmium Ion, Anal. Chem., 2020, 92: 13550-13557. [5] Chen Z, Chen B, He M, Wang H, Hu B, Droplet-Splitting Microchip Online Coupled with Time-Resolved ICPMS for Analysis of Released Fe and Pt in Single Cells Treated with FePt Nanoparticles, Anal. Chem., 2020, 92: 12208-12215.

Primary author

斌 胡 (Wuhan University)

Presentation materials

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