Current Pharmaceutical Biotechnology

Zeno Foldes-Papp
Visiting Professor of Medical Biochemistry
HELIOS Clinical Center of Emergency Medicine
Department for Internal Medicine
Alte-Koelner-Strasse 9
D-51688 Koeln-Wipperfuerth
Germany

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Single-Molecule Detection and Probe Strategies for Rapid and Ultrasensitive Genomic Detection

Author(s): Hsin-Chih Yeh, Shu-Yi Chao, Yi-Ping Ho and Tza-Huei Wang

Affiliation: Department of MechanicalEngineering&Whitaker Biomedical Engineering Institute, The Johns HopkinsUniversity, Baltimore, Maryland 21218, USA;

Abstract:

This paper reviews the current state-of-the-art development of single-molecule detection (SMD)-based methods for ultrasensitive and specific analysis of genomic sequences. We first discuss several newly devised single fluorescent probe strategies that allow separation-free detection of low-abundance DNA sequences, such as quantum dot (QD)- mediated fluorescence resonance energy transfer (FRET) technology and dual-color fluorescence coincidence and colocalization analysis. Various schemes toward single DNA sizing and sequencing in solutions or on surfaces are also reviewed. In the end, we summarize the different microfluidic approaches developed for use with SMD to facilitate rapid, low-volume and quantitative analysis, such as electrokinetic and hydrodynamic single-molecule manipulation techniques.

Keywords: Single molecule detection, Quantum dot, Dual-color fluorescence coincidence, Fluorescence resonance energy transfer, Nucleic acid detection, Microfluidics

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Article Details

VOLUME: 6
ISSUE: 6
Page: [453 - 461]
Pages: 9
DOI: 10.2174/138920105775159304
Price: $58