alexa Multiplexing in Bioassays
ISSN: 2090-4967

Biosensors Journal
Open Access

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Review Article

Multiplexing in Bioassays

Ruppert C1,2, Kohl M1,2, Jacob LJ1,2 and Deigner HP1,2,3*

1Hochschule Furtwangen University, Medical and Life Sciences Faculty, Germany

2Institute of Precision Medicine, Villingen-Schwenningen, Germany

3Fraunhofer Institute, Perlickstr.1, Leipzig, Germany

Corresponding Author:
Deigner HP
Fraunhofer Institute IZI/EXIM (Leipzig/ Rostock)
Perlickstr. 1, D-04103 Leipzig, Germany
Tel: + 49 341 355361
E-mail: [email protected]

Received Date: June 15, 2015; Accepted Date: August 31, 2015; Published Date: September 02, 2015

Citation: Ruppert C, Kohl M, Jacob LJ, Deigner HP (2015) Multiplexing in Bioassays. Biosens J 4:124. doi:10.4172/2090-4967.1000124

Copyright: © 2015 Ruppert C, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Semiconductor nanoparticles, especially quantum dots (QDs), exhibit favourable optical properties for fluorescence imaging. Simultaneous excitation, without the need for monochromatic light and sharp emission bands allow the development of fast and sensitive multiplex immunoassays. Nano dyes can replace conventional organic dyes to increase the number of signals for multiplexing or be used in combination to form effective FRET-pairs. Advantageous properties like resistance to photobleaching or long fluorescence lifetimes at stable quantum yields and high extinction coefficients add to the benefits of quantum dots. Different strategies for data acquisition and experimental setup can improve conventional staining techniques to make them more sensitive, faster or versatile in multicolour imaging. The photostability allows long term light exposure of quantum dots, increasing the time frame for applications like live cell imaging. We provide a brief overview on current fluorescent tags and hardware suitable for multiplexing.


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