Hoechst-IR: An Imaging Agent That Detects Necrotic Tissue in Vivo by Binding Extracellular DNA
Organic Letters2010Vol. 12(15), pp. 3300–3303
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Madhuri Dasari, Sungmun Lee, Jay C. Sy, Dongin Kim, Seungjun Lee, Milton E. Brown, Michael Davis, Niren Murthy
Abstract
Cell necrosis is central to the progression of numerous diseases, and imaging agents that can detect necrotic tissue have great clinical potential. We demonstrate here that a small molecule, termed Hoechst-IR, composed of the DNA binding dye Hoechst and the near-infrared dye IR-786, can image necrotic tissue in vivo via fluorescence imaging. Hoechst-IR detects necrosis by binding extracellular DNA released from necrotic cells and was able to image necrosis generated from a myocardial infarction and lipopolysaccharide/d-galactosamine (LPS-GalN) induced sepsis.
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