Nano Science and Technology Institute
Nanotech 2009 Vol. 2
Nanotech 2009 Vol. 2
Nanotechnology 2009: Life Sciences, Medicine, Diagnostics, Bio Materials and Composites
Chapter 3: Nano Medicine

Phage reporter biosensing of pathogenic agents

Authors:S. Ripp
Affilation:University of Tennessee, US
Pages:119 - 122
Keywords:bacteriophage, bioluminescence, quorum sensing, pathogen
Abstract:Considered the most abundant organism on Earth, at a population approaching 1031, bacteriophage mediate interactions with myriad bacterial hosts that has for decades been exploited in phage typing schemes for signature identification of clinical, foodborne, and waterborne pathogens. More recently, this basic premise of phage/host specificity has been advanced via phage-mediated signaling elements that indicate when a phage/host infection event has occurred, thereby providing a very simple and rapid means for bacterial recognition. We have, for example, linked the bacterial bioluminescent (lux) response to phage/host infection using quorum sensing chemical synthesis as a signaling intermediary. This permits facile light-based sensing of E. coli O157:H7 at concentrations as low as 1 cfu/ml. With the concurrent ability to nanointerface reporter assays onto integrated circuit microluminometers, the potential exists for the development of phage-based sentinel microchips that can function as environmental monitors for multiplexed recognition of biological agents in air, food, and water.
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