Abstract
Background: Caffeine has shown an inhibitory role in invasion and proliferation in melanoma pulmonary metastasis as well as in high-grade tissue sarcoma. However, little is known about its mechanism and possible role in metastatic cell lines. Materials and Methods: B16F10 and B16F1 cell lines of high and low metastatic potential were treated with caffeine at different time intervals with different doses. Reduced glutathione, glutathione S-transferase and lipid peroxides were estimated to evaluate the effect of caffeine. Results: Caffeine treatment showed glutathione depletion and increased lipid peroxidation with higher glutathione S-transferase activity in both B16F10 and B16F1 cell lines. However the effect of caffeine was dependent on the time factor as well as on the dose. Conclusions: Caffeine was an effective inhibitor of metastatic activity. Glutathione depletion in conjunction with increased lipid peroxidation was a potent indicator in the regulation of metastatic behavior of B16F10 and B16F1 melanoma cell lines.
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