Bioorganic and Medicinal Chemistry p. 3115 - 3127 (2019)
Update date:2022-08-25
Topics:
Lu, Runxin
Zhou, Lin
Yue, Qiming
Liu
Cai, Xiaojing
Xiao, Wenjiao
Hai, Li
Guo, Li
Wu, Yong
Although active targeting liposomes with cancer-specific ligands can bind and internalize into cancer cells, only a few high-efficiency liposomes have been developed so far because traditional single branched ligand modified liposomes generally failed to deliver adequate therapeutic payload. In this paper, we broke the traditional design concept and synthesized the double branched biotin modified cholesterol (Bio2-Chol) for the first time. On this basis, different biotin density modified liposomes ((Bio-Chol)Lip, (Bio-Chol)2Lip and (Bio2-Chol)Lip) were successfully prepared and used as active targeting drug delivery systems for the treatment of breast cancer. The in vitro and in vivo breast cancer-targeting ability of these liposomes were systemically studied using paclitaxel (PTX) as the model drug. And the uptake mechanism of (Bio2-Chol)Lip was investigated. The results showed that (Bio2-Chol)Lip had the best breast cancer-targeting ability compared with naked paclitaxel, unmodified Lip, (Bio-Chol)Lip and (Bio-Chol)2Lip. In particular, the relative uptake efficiency (RE) and concentration efficiency (CE) of (Bio2-Chol)Lip were respectively enhanced by 5.61- and 5.06-fold compared to that of naked paclitaxel. Both distribution data and pharmacokinetic parameters suggested that the double branched biotin modified liposome ((Bio2-Chol)Lip) is a very promising drug delivery carrier for breast cancer.
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