Isolation of DNA aptamers using micro free flow electrophoresis.

Jing, Meng; Bowser, Michael T · Lab Chip · 2011

basic_science · Level V

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Abstract

A micro free flow electrophoresis (μFFE) device was used to select DNA aptamers for human immunoglobulin E (IgE). The continuous nature of μFFE allowed 1.8 × 10(14) sequences to be introduced over a period of 30 min, a 300-fold improvement in library size over capillary electrophoresis based selections (CE-SELEX). Four rounds of selection were performed within four days. Aptamers with low nM dissociation constants for IgE were identified after a single round of μFFE selection.

Medical subject headings