標題: Rapid and sensitive detection of cancer cells by coupling with quantum dots and immunomagnetic separation at low concentrations
作者: Hsieh, Yi-Heui
Lai, Lee-Jene
Liu, Shih-Jen
Liang, Keng S.
電子物理學系
Department of Electrophysics
關鍵字: Quantum dots;Magnetic bead;Immunoassay;Cancer cell;Fluorescence
公開日期: 15-六月-2011
摘要: This work presents a rapid and sensitive method for detecting cancer cells at low concentration. In this method, two biomarkers of T-help cancer cells are detected simultaneously. One biomarker is conjugated with magnetic beads to separate T-help cell from the mixed cells and the other biomarker, associated with quantum dots, is used to detect fluorescence. The specific T-help cells can be quantified using the relationship between the QD fluorescence intensity and the cell frequency following magnetic separation. The intensity of fluorescence increases linearly with the frequency of T-help cells from 10(-7) to 10(-3), and neither B cells nor red blood cells interfere with the detection of T-help cells. Moreover, the total detection time is under 15 min, even though the frequency of specific T-help cells is as low as 5 x 10(-7). The numerous advantages of detecting specific cells at low concentration using the presented method include ease of preparation, low cost, fast detection, and high sensitivity. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.bios.2011.04.023
http://hdl.handle.net/11536/22606
ISSN: 0956-5663
DOI: 10.1016/j.bios.2011.04.023
期刊: BIOSENSORS & BIOELECTRONICS
Volume: 26
Issue: 10
起始頁: 4249
結束頁: 4252
顯示於類別:期刊論文


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  1. 000291904000045.pdf