Background: Ocular melanoma is a disorder that is rarely found but is deadly. Four tissues in the eye that can be attacked by melanoma include the uveal tract, conjunctiva, eyelids, and orbit. Uveal melanoma is the most common case, while melanoma conjunctiva is very rare. Objective: This study aimed to investigate the effect of giving genistein on cyclin D1 expression in malignant melanoma. Methods: When confluent, CRL1872 malignant melanoma cells will be divided into treatment groups, the group giving genistein dose 25 µM, the group giving genistein a dose of 50 µM, and the group giving genistein a dose of 100 µM. Cyclin D1 analysis was measured by immunofluorescence using confocal laser scan microscopy. Results: There was a significant increase in the expression of cyclin D1, in the group given genistein 25 µM and 50 µM (p < 0.05). For the administration of genistein dose of 100 µM, cyclin D1 expression decreased significantly compared to the control group (p < 0.05). Conclusion: It was concluded that genistein had a biphasic effect on cyclin D1 expression in malignant melanoma cells. Thus, genistein at the right dose can be a treatment of malignant melanoma.
Key words: ocular melanoma, soybeans, chemotherapy, biphasic effect.
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