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  • Title: Anticarcinoma activity of rhodamine 123 against a murine renal adenocarcinoma.
    Author: Herr HW, Huffman JL, Huryk R, Heston WD, Melamed MR, Whitmore WF.
    Journal: Cancer Res; 1988 Apr 15; 48(8):2061-3. PubMed ID: 3349477.
    Abstract:
    The mitochondria of carcinoma cells retain the permeant cationic compound rhodamine 123 longer than the mitochondria of normal epithelial cells. The possibility of exploiting this difference in the chemotherapy of a murine renal adenocarcinoma was investigated. Rhodamine 123 exhibited anticarcinoma activity in mice and this activity was potentiated by 2-deoxyglucose and methylglyoxal bis(guanylhydrazone), a chemotherapeutic agent that is toxic to mitochondria. Prolonged retention of rhodamine 123 by renal tumor cells compared with normal renal epithelial cells was demonstrated by flow cytometry, perhaps explaining its antitumor activity. A combination of both mitochondrial toxins, rhodamine 123 and methylglyoxal bis(guanylhydrazone) produced the longest survival and had the greatest antitumor effect.
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