Enzymatic reaction in droplets manipulated with liquid dielectrophoresis.
Droplet generation and transportation for biological reactions are conducted with liquid dielectrophoresis (LDEP), forming two hundred picoliter droplets and aligning them in an open environment above the micro-machined electrodes. The generation of the dielectrophoresis signals was critically examined to actuate droplets in biological solutions without excessive Joule heating. Enzymatic reactions between β-galactosidase and fluorescein di-β-D-galactopyranoside were succeeded in manipulated droplets, which was confirmed by fluorescence imaging. These results allow us to propose the integration of LDEP actuation in high throughput biomolecular assays.
LIMMS/CNRS-IIS, (UMI 2820), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan. momo@iis.u-tokyo.ac.jp
Momoko
M
Kumemura
Dominique
D
Collard
Satoko
S
Yoshizawa
Bernard
B
Wee
Shoji
S
Takeuchi
Hiroyuki
H
Fujita
D004586:Electrophoresis / Q000295:instrumentation; D005452:Fluoresceins / Q000737:chemistry / Q000378:metabolism*; D005453:Fluorescence; D005697:Galactosides / Q000737:chemistry / Q000378:metabolism*; D010316:Particle Size; D013499:Surface Properties; D001616:beta-Galactosidase / Q000737:chemistry / Q000378:metabolism*
D005452:Fluoresceins; D005697:Galactosides; C038848:fluorescein-digalactoside; D001616:beta-Galactosidase