Abstract:
:A redox-responsive poly(ethylene glycol) (PEG)-sheddable copolymer of disulfide-linked PEG 5000-lysine-di-tocopherol succinate (P(5k)SSLV) is developed which can self-assemble into nanomicelles in aqueous condition and trigger the rapid release of encapsulated drugs within tumor cells. The reduction-insensitive doxorubicin (DOX)-loaded P(5k)LV (P(5k)LV-DOX) nanomicelles are further prepared. Then head-to-head comparison of P(5k)SSLV-DOX, P(5k)LV-DOX and DOX-Sol is performed concerning in vitro release, cytotoxicity, cellular uptake and apoptosis. Results show that P(5k)SSLV-DOX nanomicelles have a faster DOX release, a higher anti-tumor activity and more DOX concentrating in the nucleus than P(5k)LV-DOX nanomicelles. In conclusion, the redox-responsive P(5k)SSLV nanomicelles might hold a great potential to improve chemotherapy by tumor-triggering intracellular rapid release. The outcomes of this study also address the significance of such head-to-head comparison studies in translational research of nanomedicine.
journal_name
Macromol Bioscijournal_title
Macromolecular bioscienceauthors
Ai X,Sun J,Zhong L,Wu C,Niu H,Xu T,Lian H,Han X,Ren G,Ding W,Wang J,Pu X,He Zdoi
10.1002/mabi.201400149subject
Has Abstractpub_date
2014-10-01 00:00:00pages
1415-28issue
10eissn
1616-5187issn
1616-5195journal_volume
14pub_type
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