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Near-infrared optical imaging of proteases in cancer Mahmood U; Weissleder RMol Cancer Ther 2003[May]; 2 (5): 489-96Near-infrared optical imaging is a newer imaging technique that, coupled with sensitive enzymatically specific fluorescent beacons, shows much promise for earlier detection of many cancers and their in situ characterization. On the basis of animal studies demonstrating visualization of micrometastasis-sized tumors and the ability to evaluate therapeutic enzyme inhibition real-time, such imaging may be incorporated in the clinical imaging paradigm in the future, both to improve cancer screening as well as for monitoring therapy in individual patients. This review details some of the related biology, optical probe design, and required hardware, with in vivo cathepsin and matrix metalloprotinease imaging used as examples.|Animals[MESH]|Cathepsins/*metabolism[MESH]|Diagnostic Imaging/*methods[MESH]|Fluorescent Dyes/metabolism[MESH]|Humans[MESH]|Matrix Metalloproteinases/*metabolism[MESH]|Mice[MESH]|Neoplasms/*metabolism/therapy[MESH]|Spectrometry, Fluorescence/methods[MESH]|Spectroscopy, Near-Infrared/*instrumentation[MESH] |
