Preparation of β-CD-Vitexin Microspheres and their Effects on SW480 Cell Proliferation

Abstract

Objective: In order to overcome the insolution and low bioavailability of the vitexin in vivo, β-cyclodextrin-vitexin (β-CD–vitexin) microspheres were prepared, and their effects on the proliferation of SW480 cells were observed. Methods: Scanning electron microscopy, ultraviolet spectrum, Fourier transform infrared spectroscopy, and release rate analysis were used to identify the formation of β-CD–vitexin microspheres. MTT assay was used to detect the effect of β-CD–vitexin microspheres on tumor cell proliferation at 6, 12, 24, and 48 h. Fluorescence microscopy and flow cytometry were used to observe the effect of β-CD–vitexin microspheres on the apoptosis of SW480 cells. The mRNA expression of p53 gene was measured by qPCR. Results: β-CD–vitexin microspheres were successfully prepared. SW480 cell proliferation was inhibited by 0.1, 0.2, and 0.4 mg/mL of β-CD–vitexin microspheres in a dose- and time-dependent manner, and the mechanism of proliferation inhibition was related to cell apoptosis caused by the upregulated expression of p53 gene. Conclusion: The preparation of β-CD–vitexin sustained release microspheres is feasible, and β-CD–vitexin microspheres have potential anti-colorectal cancer value.