| Texto completo | |
| Autor(es): Mostrar menos - |
Ribeiro, Irisvan S.
;
Leonardo, Adisom L. S.
;
Carneiro, Maria J. M.
;
Costa Filho, Raimundo N.
;
Freire, Rosemayre S.
;
Sousa, Jeanlex S.
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Araujo, Gisele S.
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Marinho Filho, Jose D. B.
;
Araujo, Ana J.
;
Paula, Haroldo C. B.
;
Feitosa, Judith P. A.
;
de Paula, Regina C. M.
Número total de Autores: 12
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of the Brazilian Chemical Society; v. 35, n. 11, p. 15-pg., 2024-01-01. |
| Resumo | |
Polysaccharide-based prodrugs formed via pH-responsive covalent interactions can be used to prepare nanoparticles for drug delivery to tumor cells. This study reports the synthesis of cashew gum-doxorubicin prodrugs via Schiff base (CG-S-DOX) and amide bonds (CG-A-DOX), both of which exhibit pH-responsive behavior. Synthesis was confirmed using spectroscopic techniques. Drug-binding content and efficiency were higher for CG-S-DOX than for CG-A-DOX. The capacity of the nanoparticles to self-organize in aqueous media was confirmed using fluorescence spectroscopy, dynamic light scattering, and atomic force microscopy. Both prodrugs possessed sizes < 200 nm and showed responsive doxorubicin-release profiles in the acidic tumor cell microenvironment. Compared with free DOX, the CG-S-DOX and CG-A-DOX prodrug had significantly reduced cytotoxicity against non-tumor cells (L929). CG-S-DOX, but not CG-A-DOX, showed antitumor activity against HCT-116 (human colorectal cancer) and MCF-7 (human breast cancer) cells. An uptake assay confirmed that the nanoparticles were easily taken up by HCT-116 cells. These results together with the great reduction in cytotoxicity against non-tumor cells, confirm the potential of CG-S-DOX prodrug nanoparticles as a reliable and efficient system for the effective delivery of doxorubicin to tumor cells. (AU) | |
| Processo FAPESP: | 14/50926-0 - INCT 2014: biodiversidade e produtos naturais |
| Beneficiário: | Vanderlan da Silva Bolzani |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOTA - Temático |