Multiplexed Electrochemical Detection of Yersinia Pestis and Staphylococcal Enterotoxin B using an Antibody Microarray

Autor: Jason Wojciechowski, David Danley, John Cooper, Nina Yazvenko, Chris Rowe Taitt
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Sensors, Vol 10, Iss 4, Pp 3351-3362 (2010)
Druh dokumentu: article
ISSN: 1424-8220
DOI: 10.3390/s100403351
Popis: The CombiMatrix antibody microarray is a versatile, sensitive detection platform based on the generation and transduction of electrochemical signals following antigen binding to surface antibodies. The sensor chip described herein is comprised of microelectrodes coupled to an adjacent bio-friendly matrix coated with antibodies to the biological pathogens Yersinia pestis and Bacillus anthracis, and the bacterial toxin staphylococcal enterotoxin B (SEB). Using this system, we were able to detect SEB and inactivated Y. pestis individually as well as in two-plex assays at concentrations as low as 5 pg/mL and 106 CFU/mL, respectively. We also introduce super avidin-biotin system (SABS) as a viable and effective means to enhance assay signal responses and lower detection limits. Together these technologies represent substantial advances in point-of-care and point-of-use detection applications.
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