title: Ultrasensitive mycotoxin detection by STING sensors.
abstract: Signal transduction by ion nano-gating (STING) technology is a label-free biosensor capable of identifying DNA and proteins. Based on a functionalized quartz nanopipette, the STING sensor includes specific recognition elements for analyte discrimination based on size, shape and charge density. A key feature of this technology is that it does not require any nanofabrication facility; each nanopipette can be easily, reproducibly, and inexpensively fabricated and tailored at the bench, thus reducing the cost and the turnaround time. Here, we show that STING sensors are capable of the ultrasensitive detection of HT-2 toxin with a detection limit of 100 fg/ml and compare the STING capabilities with respect to conventional sandwich assay techniques.
authors.affiliation: Department of Biomolecular Engineering, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.
authors.forename: Paolo
authors.initials: P
authors.lastname: Actis
authors.forename: Olufisayo
authors.initials: O
authors.lastname: Jejelowo
authors.forename: Nader
authors.initials: N
authors.lastname: Pourmand
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D003217:Conductometry / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005504:Food Analysis / Q000295:instrumentation*; D005506:Food Contamination / Q000032:analysis*; D008832:Microchemistry / Q000295:instrumentation*; D009183:Mycotoxins / Q000032:analysis*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation
chemical_list: D009183:Mycotoxins