GGP modified daunorubicin plus dioscin liposomes inhibit breast cancer by suppressing epithelial-mesenchymal transition.

Tumor invasion and metastasis are the nodus of anti-tumor. Epithelial cell-mesenchymal transition is widely regarded as one of the key steps in the invasion and metastasis of breast cancer. In this study, GGP modified daunorubicin plus dioscin liposomes are constructed and characterized. GGP modified daunorubicin plus dioscin liposome has suitable particle size, narrow PDI, zeta potential of about -5 mV, long cycle effect, and enhanced cell uptake due to surface modification of GGP making the liposome could enter the inside of the tumor to fully exert its anti-tumor effect. The results of in vitro experiments show that the liposome has superior killing effect on tumor cells and invasion. In vivo results indicate that the liposome prolongs the drug's prolonged time in the body and accumulates at the tumor site with little systemic toxicity. In short, the targeted liposome can effectively inhibit tumor invasion and may provide a new strategy for the treatment of invasive breast cancer.

Development and characterization of octreotide-modified curcumin plus docetaxel micelles for potential treatment of non-small-cell lung cancer.

We prepared octreotide (OCT)-modified curcumin plus docetaxel micelles to enhance active targeting and inhibit tumor metastasis by destroying vasculogenic mimicry (VM) channels. Soluplus was applied as an amphiphilic material to form micelles via film dispersion. The cytotoxic effects, active cellular targeting, and inhibitory effects on metastasis were systematically evaluated in vitro using A549 cells, and in vivo antitumor effects were evaluated using xenograft tumor-bearing mice. In vitro assays indicated that the OCT-modified curcumin plus docetaxel micelles showed robust cytotoxicity on A549 cells and effectively inhibited VM channels and tumor metastasis. Studying the mechanism of action indicated that OCT-modified curcumin plus docetaxel micelles downregulated MMP-2 and HIF-1α. In vivo assays indicated that OCT-modified curcumin plus docetaxel micelles increased drug accumulation at tumor sites and showed obvious antitumor efficacy. The developed OCT-modified curcumin plus docetaxel micelles may offer a promising treatment strategy for non-small-cell lung cancer.