Abstract:
:In this study, the cytotoxicity of doxorubicin (DOX) loaded stearic acid grafted chitosan oligosaccharide (CSO-SA) micelles and its core modified drug delivery systems were investigated in vitro. The in vitro drug release experiments using cellular culture medium, Roswell Park Memorial Institute 1640 (RPMI-1640) medium as a dissolution medium confirmed that the DOX release from CSO-SA micelles was successfully delayed by the core modification of CSO-SA micelles with stearic acid (SA). The cell viability assay against A549 cells indicated the 50% inhibition concentration (IC(50)) of blank CSO-SA micelles and the core modified CSO-SA micelles was 369 +/- 27 microg/mL and 234 +/- 9 microg/mL, respectively. The entrapment of DOX by CSO-SA micelles could decrease the IC(50) of DOX from 3.5 to 1.9 microg/mL, and a further reduction to 0.7 microg/mL could result by the core modification of CSO-SA micelles. The fluorescence image observations of DOX and DOX concentration measurements inside A549 cells demonstrated that the DOX concentration inside cells was increased by the entrapment of CSO-SA micelles, and further enhanced by the core modification of CSO-SA micelles. The results indicated that the CSO-SA micelles with modified cores could be useful as a drug delivery vehicle for cancer chemotherapy.
journal_name
J Pharm Scijournal_title
Journal of pharmaceutical sciencesauthors
Ye YQ,Chen FY,Wu QA,Hu FQ,Du YZ,Yuan H,Yu HYdoi
10.1002/jps.21464subject
Has Abstractpub_date
2009-02-01 00:00:00pages
704-12issue
2eissn
0022-3549issn
1520-6017pii
S0022-3549(16)32856-8journal_volume
98pub_type
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