Abstract
The purpose of this present study was to evaluate the antiangiogenic activity of sterically stabilized liposomes containing paclitaxel (SSL-PTX). The SSL-PTX was prepared by the thin-film method. The release of paclitaxel from SSL-PTX was analyzed using a dialysis method. The effect of SSL-PTX on endothelial cell proliferation and migration was investigated in vitro. The antitumor and antiangiogenic activity of SSL-PTX was evaluated in MDA-MB-231 tumor xenograft growth in BALB/c nude mice. The release of paclitaxel from SSL-PTX was 22% within 24 h. Our in vitro results indicated that SSL-PTX could effectively inhibit the endothelial cell proliferation and migration at a concentration-dependent manner. We also observed that metronomic SSL-PTX induced marked tumor growth inhibition in MDA-MB-231 xenograft model via the antiangiogenic mechanism, unlike that in paclitaxel injection (Taxol) formulated in Cremophor EL (CrEL). Overall, our results suggested that metronomic chemotherapy with low-dose, CrEL-free SSL-PTX should be feasible and effective.
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The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (no. 30873170) and the National Basic Research Program of China (973 Program 2007CB935800 and 2009CB930300).
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Huang, Y., Chen, XM., Zhao, BX. et al. Antiangiogenic Activity of Sterically Stabilized Liposomes Containing Paclitaxel (SSL-PTX): In Vitro and In Vivo . AAPS PharmSciTech 11, 752–759 (2010). https://doi.org/10.1208/s12249-010-9430-z
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DOI: https://doi.org/10.1208/s12249-010-9430-z