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Diazenecarboxamide UP-91, a potential anticancer agent, acts by reducing cellular glutathione content
Dubravka Moskatelo1, Slovenko Polanc, Janez Kosmrlj
1Department of Molecular Genetics, Ruder Bosković Institute, Bijenicka cesta 54, HR-10000 Zagreb, Croatia.
Pharmacology & Toxicology
|February 7, 2003
Summary
The novel compound UP-91, a type of diazenecarboxamide, effectively reduced glutathione levels and inhibited the growth of various human tumor cell lines, including drug-resistant types, indicating its potential as an anticancer agent.
Area of Science:
- Biochemistry
- Pharmacology
- Oncology
Background:
- Glutathione (GSH) is a vital thiol for cellular protection.
- Diazenecarboxamides (diazenes) are investigated for their potential to deplete intracellular GSH and inhibit tumor growth.
Purpose of the Study:
- To evaluate the cytotoxic effects of four diazenecarboxamides (JK-914, JK-918, JK-1013, and UP-91) on human tumor cell lines.
- To determine the reactivity of these compounds with thiols and their impact on intracellular GSH levels.
Main Methods:
- Cytotoxicity was assessed using a modified MTT assay on eight human tumor cell lines.
- Compound reactivity was analyzed via chromatography (TLC) and NMR spectroscopy.
- Intracellular GSH levels were measured spectrophotometrically.
Main Results:
- Diazene UP-91 significantly reduced the survival of all tested tumor cell lines, including drug-resistant ones.
- UP-91 demonstrated high reactivity with thiophenol and GSH, correlating with its potent cytotoxic effect.
- Only UP-91 effectively lowered intracellular GSH levels, while other tested diazenes had no significant impact.
Conclusions:
- The diazenecarboxamide UP-91 shows promise as an anticancer agent.
- UP-91's mechanism involves the reduction of intracellular glutathione levels, leading to tumor cell growth inhibition.