摘要 |
To image apoptosis in vivo, small, membrane-permeable probes comprising a caspase 3 substrate, a fluorogenic dye and a radionuclide is provided. This dual-modality probe can be cleaved by caspase upon exposure to apoptotic cells, allowing imaging of caspase 3 and 7 activities using both optical and nuclear imaging techniques. The combined use of these methods provides the opportunity for a direct correlation between in vitro and in vivo biological activities and a viable method to treat disease
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