Highly Integrated Nano-Platform based on E-selectin-targeting Strategy for Metastatic Breast Cancer Treatment
2019
Therapeutic goals for metastatic breast cancer, including shrinkage of established metastasis and suppression of movement of tumor cells, are often hard to achieve and remain the main obstacles restricting the antimetastatic efficacy of targeted drug delivery systems (TDDSs). Herein, we proposed an E-selectin-targeting nanoplatform for the systemic treatment of metastatic breast cancer. Versatile functions, including killing the circulating tumor cells, shrinking the established lesions, as well as inhibiting the movement of tumor cells, were integrated into doxorubicin-loaded sialic acid-dextran-octadecanoic acid (SDO) micelles (SDD). The prepared SDD micelles could not only inhibit lung and liver metastasis in the orthotopic 4T1 tumors model, but also decrease the metastatic lesions in the metastatic 4T1 cell model, resulting in 27.33% reduced number of metastatic nodules when compared to those without sialic acid modification. It was found that the good antimetastatic effect of SDD was only partially a...
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