Fluorescence-guided surgery of liver metastasis in Orthotopic nude-mouse models

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Abstract

© 2015 Murakami et al.We report here the development of fluorescence-guided surgery of liver metastasis. HT29 human colon cancer cells expressing green fluorescent protein (GFP) were initially injected in the spleen of nude mice. Three weeks later, established liver metastases were harvested and implanted on the left lobe of the liver in other nude mice in order to make an orthotopic liver metastasis model. Fourteen mice with a single liver metastasis were randomized into bright-light surgery (BLS) or fluorescence-guided surgery (FGS) groups. Seven mice were treated with BLS, seven were treated with FGS. Three weeks after implantation, the left lobe of the liver with a single metastasis was exposed through a median abdominal incision. BLS was performed under white light. FGS was performed using a hand-held portable fluorescence imaging system (Dino-Lite). Post-surgical residual tumor fluorescence was visualized with the OV100 Small Animal Imaging System. Residual tumor fluorescence after BLS was clearly visualized at high magnification with the OV100. In contrast, residual tumor fluorescence after FGS was not detected even at high magnification with the OV100. These results demonstrate the feasibility of FGS for liver metastasis. Copyright:

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Murakami, T., Hiroshima, Y., Zhang, Y., Chishima, T., Tanaka, K., Bouvet, M., … Hoffman, R. M. (2015). Fluorescence-guided surgery of liver metastasis in Orthotopic nude-mouse models. PLoS ONE, 10(10). https://doi.org/10.1371/journal.pone.0138752

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