Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies

Ros A, Hellmich W, Duong TT, Anselmetti D (2004)
Journal of biotechnology 112(1-2): 65-72.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
OA
Autor/in
; ; ;
Abstract / Bemerkung
In this paper, we report on the performance of electrophoretical separation and laser-induced fluorescence (LIF) detection of dyes and fluorescently labeled biomolecules in poly(dimethylsiloxane) (PDMS) microdevices. The dyes fluorescein and fluorescein isothiocyanate (FITC) have been separated effectively in nM concentrations. Fluorescein injections gave linear concentration response in the range from 4 to 100 pM. As ultimate detection sensitivity, 100 fM injected fluorescein was obtained. Further, 100 fM injected fluorescein could be detected. This is to our knowledge the smallest electrokinetically injected dye concentration detected on a microchip. Injection studies of fluorescently labeled avidin revealed a theoretical detection limit of 25nM for laser-induced fluorescence detection in good agreement with separations in glass chips. Furthermore, the injection of several and even one single DNA molecule using a PDMS cross injector has been demonstrated as well as free solution separation of [lambda]- and T2-DNA (60pM each) in periodically structured channels.
Stichworte
Poly(dimethylsiloxane); Microchip separation; DNA migration; Single molecule detection
Erscheinungsjahr
2004
Zeitschriftentitel
Journal of biotechnology
Band
112
Ausgabe
1-2
Seite(n)
65-72
ISSN
0168-1656
Page URI
https://pub.uni-bielefeld.de/record/1773161

Zitieren

Ros A, Hellmich W, Duong TT, Anselmetti D. Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies. Journal of biotechnology. 2004;112(1-2):65-72.
Ros, A., Hellmich, W., Duong, T. T., & Anselmetti, D. (2004). Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies. Journal of biotechnology, 112(1-2), 65-72. doi:10.1016/j.jbiotec.2004.04.020
Ros, A., Hellmich, W., Duong, T. T., and Anselmetti, D. (2004). Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies. Journal of biotechnology 112, 65-72.
Ros, A., et al., 2004. Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies. Journal of biotechnology, 112(1-2), p 65-72.
A. Ros, et al., “Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies”, Journal of biotechnology, vol. 112, 2004, pp. 65-72.
Ros, A., Hellmich, W., Duong, T.T., Anselmetti, D.: Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies. Journal of biotechnology. 112, 65-72 (2004).
Ros, Alexandra, Hellmich, Wibke, Duong, Thanh Tu, and Anselmetti, Dario. “Towards single molecule analysis in PDMS microdevices: from the detection of ultra low dye concentrations to single DNA molecule studies”. Journal of biotechnology 112.1-2 (2004): 65-72.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Copyright Statement:
This Item is protected by copyright and/or related rights. [...]
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2019-09-06T08:48:07Z
MD5 Prüfsumme
9c02c01745aef4fa3a2bc0e049ac0f93

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 15288941
PubMed | Europe PMC

Suchen in

Google Scholar