Cell-penetrating chitosan/doxorubicin/TAT conjugates for efficient cancer therapy.

Abstract:

:In this study, a cell-penetrating peptide, the transactivating transcriptional factor (TAT) domain from HIV, was linked to a chitosan/doxorubicin (chitosan/DOX) conjugate to form a chitosan/DOX/TAT hybrid. The synthesized chitosan/DOX/TAT conjugate showed a different intracellular distribution pattern from a conjugate without TAT. Unlike both free DOX and the conjugate without TAT, the chitosan/DOX/TAT conjugate was capable of efficient cell entry. The chitosan/DOX/TAT conjugate was found to be highly cytotoxic, with an IC(50) value of approximately 480 nM, 2 times less than that of chitosan/DOX (980 nM). The chitosan/DOX/TAT provided decreases in tumor volume of 77.4 and 57.5% compared to free DOX and chitosan/DOX, respectively, in tumor-bearing mice. Therefore, this study suggests that TAT-mediated chitosan/DOX conjugate delivery is effective in slowing tumor growth.

journal_name

Int J Cancer

authors

Lee JY,Choi YS,Suh JS,Kwon YM,Yang VC,Lee SJ,Chung CP,Park YJ

doi

10.1002/ijc.25578

subject

Has Abstract

pub_date

2011-05-15 00:00:00

pages

2470-80

issue

10

eissn

0020-7136

issn

1097-0215

journal_volume

128

pub_type

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