Periasamy, Ammasi

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Prof. Ammasi Periasamy

Professor/Center Director
Univ of Virginia
Fellow Member

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Area of Expertise: Light Microscopy techniques, FLIM, FRET, Endogenous molecular imaging, Intravital imaging
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Summary
A key area of my research is focused on the design and development of optical methodology including advanced light microscopy techniques to investigate/monitor exogenous and endogenous protein-protein interactions, intravital imaging and monitoring the physical parameters of normal versus cancer tissues. I am the founder and center director of the W.M. Keck Center for Cellualr Imaging (KCCI), an internationally known center in advanced optical and microscopy imaging, particularly in the area of protein-protein interactions in living and fixed specimens. We developed a 2- and 3-color steady state, confocal, multiphoton, and FLIM based Förster resonance energy transfer (FRET) imaging system for protein localization in living specimens. The important aspect of the FRET-work is the development of a PFRET software package for quantitative FRET data analysis to estimate the nanometer (1-10 nm) distance between the protein molecules in living/fixed cells and tissue for various light microscopy techniques for any combination of fluorophore pairs. This PFRET software is used nationally and internationally by the FRET microscopy users. I am an internationally recognized expert in advanced microscopy techniques, particularly in the area of molecular imaging in living cells and tissues. I am one of the pioneers in developing lifetime imaging microscopy for intracellular calcium measurement and later I developed the same methodology for protein-protein interactions and cancer diagnosis. I have published over 100 articles in refereed journals and book chapters. I have given more than 100 invited lectures nationally and internationally. I have edited three books, Chairperson in organizing an annual International conference on Multiphoton Microscopy in the Biomedical Sciences through SPIE (since 2001) and runs a hands on training annual workshop on FRET Microscopy at the University of Virginia, Charlottesville during March (since 2002). I was elected “Fellow” members of the SPIE.
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