Treatment activity of the injectable hydrogels loaded with dexamethasone In(iii) complex on glioma by inhibiting the VEGF signaling pathway

Abstract

In this work, a novel In(iii) coordination polymer, i.e., {[In(L)(im)(H2O)](H2O)} n (1) was produced from the synthetic reactions in water and dimethylformamide mixed solvents and using methyl-3-hydroxy-5-carboxy-2-thiophenecarboxylic acid (H2L) and imidazole (Him) as the co-ligands, and then successfully loaded with dexamethasone. The injectable hydrogels were prepared from natural polysaccharide hyaluronic acid with good biocompatibility and successfully loaded with In(iii) complex. The suppressive inhibitory effect of hydrogels toward U251 human glioma cell line viability was assessed using the Cell Counting Kit-8 assay kit, and the relatively expressed levels of the vascular endothelial growth factor signaling pathway were determined by real-time RT-PCR.