Abstract: A method and system for label-free detection of pathogenic and antibiotic resistant bacteria is disclosed. The method includes fabricating a G-FET/peptide device having a synthesized peptide probe capable of recognizing and binding to a bacterial target; performing electric-field assisted binding of at least one bacterial cell of the bacterial target to the G-FET/peptide device; and electrically detecting the binding of the at least one bacterial cell to the G-FET/peptide device.

Abstract: The present disclosure provides a novel approach, recomSELEX, that highly integrate mutually supportive recombination and computational methods for aptamer selection and identification. The recomSELEX approach comprises a recombinatorial SELEX platform for aptamer screening that exponentially increases the sequence space that is explored by incorporation of a DNA shuffling step that allows recombination between aptamers. Subsequently, the recombinatorial SELEX platform can also be employed to develop new and optimize already existing aptamers. The recomSELEX further comprises a computational SELEX platform with a constrained genetic algorithm (GA) to identify potential aptamers that are stable and have the desired specificity and affinity of a target.

Abstract: A method and system for label-free detection of pathogenic and antibiotic resistant bacteria is disclosed. The method includes fabricating a G-FET/peptide device having a synthesized peptide probe capable of recognizing and binding to a bacterial target; performing electric-field assisted binding of at least one bacterial cell of the bacterial target to the G-FET/peptide device; and electrically detecting the binding of the at least one bacterial cell to the G-FET/peptide device.