Self-assembling hybrid linear-dendritic block copolymers: The design of nano-carriers for lipophilic antitumoral drugs
Two series of amphiphilic block copolymers with a hybrid linear-dendritic structure are presented. The compounds consisted of a hydrophilic poly (ethylene glycol) (PEG) block and a 2,2′-bis(hydroxymethyl)propionic acid (bis-MPA) dendron functionalized with stearic acid chains that impart a hydrophobic nature to the block. Different self-assembled nanostructures with a hydrophobic interior and a hydrophilic external part were obtained depending on the length of the PEG chain (<i>M</i><sub>n</sub> = 2000 and <i>M</i><sub>n</sub> = 5000) and the generation of the bis-MPA dendron. The materials were characterized by transmission electron microscopy (TEM). The shapes of the aggregates ranged from spherical or cylindrical micelles to flexible bilayers. The hydrophobic core enabled these nanostructures to encapsulate the water-insoluble drug plitidepsin. The efficacy of these new plitidepsin-containing carriers was evaluated in four cancer cell-lines and they showed similar anticancer activity to the current standard drug formulation.
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | artículo biblioteca |
| Published: |
Multidisciplinary Digital Publishing Institute
2019-01-29
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| Subjects: | Dendrimers, Micellar aggregates, Drug delivery, Anticancer, |
| Online Access: | http://hdl.handle.net/10261/177047 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100010067 http://dx.doi.org/10.13039/501100000780 |
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