Abstract
This paper explores the underlying mechanism through which β-elemene inhibits the growth of intraocular melanoma in a mouse model. C57BL/6J mice were administered a subretinal injection of B16F10 melanoma cells and divided into two groups: treatment and control. The treatment group was administered β-elemene through an intravitreal injection and the control group was injected with a blank emulsion. After 21 days of continuous treatment, tumor masses were removed and weighed. The mRNA expression levels of the urokinase-type plasminogen activator (uPA), uPA receptor (uPAR), matrix metalloproteinase (MMP)-2, and MMP-9 were assayed by real-time PCR, and the protein expression levels of uPA, uPAR, MMP-2, and MMP-9 were assayed by immunocytochemistry and western blotting. Tumor size was inhibited by β-elemene in the treatment group, and the expressions of uPA, uPAR, MMP-2, and MMP-9 were all downregulated at both the mRNA and the protein level compared with the control group. In a mouse model of intraocular melanoma, β-elemene inhibits tumor growth by downregulating the expression of uPA, uPAR, MMP-2, and MMP-9.
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