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  • Title: Analysis of integrin signaling by fluorescence resonance energy transfer.
    Author: Wang Y, Chien S.
    Journal: Methods Enzymol; 2007; 426():177-201. PubMed ID: 17697885.
    Abstract:
    Fluorescence resonance energy transfer (FRET) has been proven to be a powerful tool to visualize and quantify the signaling cascades in live cells with high spatiotemporal resolutions. Here we describe the development of the genetically encoded and FRET-based biosensors for imaging of integrin-related signaling cascades. The construction of a FRET biosensor for Src kinase, an important tyrosine kinase involved in integrin-related signaling pathways, is used as an example to illustrate the construction procedure and the pitfalls involved. The design strategies and considerations on improvements of sensitivity and specificity are also discussed. The FRET-based biosensors provide a complementary approach to traditional biochemical assays for the analysis of the functions of integrins and their associated signaling molecules. The dynamic and subcellular visualization enabled by FRET can shed new light on the molecular mechanisms regulating integrin signaling and advance our knowledge in the understanding of integrin-related pathophysiological processes.
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