Abstract
Cancer is a group of diseases characterized by uncontrolled cell growth, invasive capacity, and metastatic potential. Despite the continual progress in cancer treatment, high toxicity and resistance to therapy remain recurring challenges. Croton grewioides Baill. is a plant from the brazilian semi-arid region with significant pharmacological potential due to its reported antidiarrheal, antioxidant, and antitumor properties. This study evaluated the antitumor activity of the essential oil from C. grewioides leaves (CgEO) by in vitro assays. CgEO showed higher cytotoxicity in human melanoma cells (SK-MEL-28), with a 50% inhibitory concentration (IC50) of 70.0 μg/mL after 72 hours, but with low toxicity in healthy keratinocytes (HaCaT). Additionally, it was suggested that the antitumor effect of CgEO is associated with the induction of apoptosis, cell cycle alterations, and combined antioxidant action mechanisms. In conclusion, CgEO exhibits antitumor activity with lower toxicity in non-tumor cells.
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