Abstract:
:This study was mainly focused on the development of a dual-ligand liposomal delivery system for targeting the delivery of paclitaxel (PTX) to lung cancer. The specific ligand peptide HAIYPRH (T7) and the cationic cell-penetrating peptide TAT were connected with phospholipid via a polyethylene glycol (PEG) spacer to prepare the dual-ligand liposomes (T7/TAT-LP-PTX). Physicochemical characterizations of T7/TAT-LP-PTX, such as particle size, ζ potential, morphology, encapsulation efficiency, and in vitro PTX release, were also evaluated. In the cellular uptake study, the T7/TAT-LP endocytosed by the A549 cells was 2.26-, 3.48- and 8.56-fold higher than TAT-LP, T7-LP and LP, respectively. The IC50 values of TAT-LP-PTX, T7-LP-PTX and LP-PTX were much higher than those of T7/TAT-LP-PTX, respectively. The homing specificity of T7/TAT-LP was evaluated on the tumor spheroids, which revealed that T7/TAT-LP was more efficaciously internalized in tumor cells than TAT-LP, T7-LP and LP, respectively. Compared to LP, TAT-LP and T7-LP, T7/TAT-LP showed the strongest cell uptake property, and the highest accumulation ability in tumor spheroids in vitro. In the in vivo study, the T7/TAT-LP-PTX exhibited the best inhibitory effect of tumor growth for A549-bearing mice. Collectively, these results suggested that T7/TAT-LP-PTX is a promising drug delivery system for the treatment of lung cancer.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Wang RH,Cao HM,Tian ZJ,Jin B,Wang Q,Ma H,Wu Jdoi
10.3892/or.2014.3644subject
Has Abstractpub_date
2015-02-01 00:00:00pages
783-91issue
2eissn
1021-335Xissn
1791-2431journal_volume
33pub_type
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