Comparison of sieving matrices for on-the-fly fluorescence lifetime detection of dye-labeled DNA fragments

Commercially available, replaceable sieving matrices and their solvent modulated forms were evaluated for use in on-the-fly fluorescence lifetime detection of dye-labeled DNA fragments in capillary electrophoresis. The fragments were labeled with dyes that can be excited by the 488 nm line of an arg...

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Published in:Fresenius' journal of analytical chemistry 2001-02, Vol.369 (3-4), p.267-272
Main Authors: Li, L, McGown, L B
Format: Article
Language:English
Subjects:
Base Sequence
Buffers
Cellulose - analogs & derivatives
Coloring Agents
DNA - chemistry
DNA Primers
Electrophoresis, Capillary - methods
Oligodeoxyribonucleotides - chemistry
Oligodeoxyribonucleotides - isolation & purification
Plasmids - chemistry
Spectrometry, Fluorescence
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McGown, L B
description Commercially available, replaceable sieving matrices and their solvent modulated forms were evaluated for use in on-the-fly fluorescence lifetime detection of dye-labeled DNA fragments in capillary electrophoresis. The fragments were labeled with dyes that can be excited by the 488 nm line of an argon ion laser and have lifetimes in the range of 0.8 ns to 3.8 ns. The sieving matrices and buffer systems included poly(vinylpyrrolidone) (PVP), poly(ethyleneoxide) (PEO), hydroxyethylcellulose (HEC), Tris-borate-EDTA (TBE) and Tris-TAPS-EDTA buffers modified with DMSO and formamide. Selection of the optimal sieving matrix is based on the separation efficiency and the enhancement of lifetime resolution of DNA fragments. Best results for both electrophoretic resolution and lifetime detection were obtained using a poly(ethyleneoxide)/TBE gel buffer in the presence of 10% formamide.
doi_str_mv 10.1007/s002160000663
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The fragments were labeled with dyes that can be excited by the 488 nm line of an argon ion laser and have lifetimes in the range of 0.8 ns to 3.8 ns. The sieving matrices and buffer systems included poly(vinylpyrrolidone) (PVP), poly(ethyleneoxide) (PEO), hydroxyethylcellulose (HEC), Tris-borate-EDTA (TBE) and Tris-TAPS-EDTA buffers modified with DMSO and formamide. Selection of the optimal sieving matrix is based on the separation efficiency and the enhancement of lifetime resolution of DNA fragments. 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source Springer Nature
subjects Base Sequence
Buffers
Cellulose - analogs & derivatives
Coloring Agents
DNA - chemistry
DNA Primers
Electrophoresis, Capillary - methods
Oligodeoxyribonucleotides - chemistry
Oligodeoxyribonucleotides - isolation & purification
Plasmids - chemistry
Spectrometry, Fluorescence
title Comparison of sieving matrices for on-the-fly fluorescence lifetime detection of dye-labeled DNA fragments
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