Whole-body imaging of infection using fluorescence.
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abstract
Optical imaging is emerging as a powerful tool to study physiological, neurological, oncological, cell biological, molecular, developmental, immunological, and infectious processes. This unit describes the use of fluorescent reporters for biological organisms, components, or events. We describe the application of fluorescence imaging to examination of infectious processes, in particular subcutaneous and pulmonary bacterial infections, but the same approaches are applicable to nearly any infectious route. The strategies described use mycobacterial infections as an example, but nearly identical systems can be used for Pseudomonas, Legionella, Salmonella, Escherichia, Borrelia, and Staphylococus, suggesting that the approaches are generally applicable to nearly any infectious agent. Two strategies for fluorescence imaging are described: the first method uses reporter enzyme fluorescence (REF), and the second uses fluorescent proteins for fluorescence imaging. Methods are described in detail to facilitate successful application of these emerging technologies to nearly any experimental system.
