Fluorescent Biosensors for Networks and Pathways

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PROJECT SUMMARY (See Instructions): We propose to continue a nationally visible and responsive center focused on the development of novel fluorescent biosensor and detection technologies for investigating pathways and networks in real time and high spatial resolution in living cells. The renewed center retains the combined experience and infrastructure of two existing centers in Pittsburgh: the Molecular Biosensors and Imaging Center at Carnegie Mellon University and the Center for Biologic Imaging at the University of Pittsburgh. The Technology Development (Core 1) component of the center will create a powerful toolbox of intracellular fluorescent biosensors and reporters that can be used to study many, if not all, of the pathway proteins and activities in living cells. This fluorescent biosensor development program integrates efforts across multiple disciplines, including dye chemistry, molecular biology, biochemistry, structural biology, modeling, cell biology, image acquisition and analysis, and high throughput screening. We have made substantial progress in this effort during the previous 3 years of funding. Four exciting Driving Biology Projects (Core 2) are essential to the technology development effort in Core 1. These DBPs are focused on important and currently un-addressable biological problems, and will serve both as test-beds for the technology and compelling demonstrations of the value of the biosensors and reporters developed in this program. The Infrastructure (Core 3) is provided through the Center for Biologic Imaging at the University of Pittsburgh. The role of the CBI is to act as the application and outreach ami of the project as a whole by testing the new biosensors with challenging biological problems. During the last cycle of this proposal the clear mission of the CBI evolved to become the catalyst in probe implementation, and to strengthen and broaden the impact of the new probes developed by MBIC. This is achieved by providing facilities and expertise to test and validate the probes in the context of the driving biological projects, and ultimately, the biomedical research community at large. The program contains a significant technology transfer component to disseminate concepts, knowledge, software, materials, and resources to users in both academic research labs and industry. This is achieved in our Infrastructure, Training, and Dissemination cores (Core 3,4, 5) and through the technology transfer activities in the Management core (Core 6).