RESUMO
Despite recent advances in the treatment of human colon cancer, the chemotherapeutic efficacy against colon cancer is still unsatisfactory. The complexity in colorectal cancer treatment leads to new research in combination therapy to overcome multidrug resistance in cancer and increase apoptosis. The objective of the present research work was to develop polyplexes for co-delivery of plasmid DNA with retinoic acid against colorectal cancer cell line (HCT-15). Plain polyplexes were prepared using chitosan and hyaluronic acid solution (0.1% w/v), whereas retinoic acid polyplexes were prepared using ethanol: water (1:9 v/v) system. The particle size was observed in the order of chitosan solution > blank polyplex > retinoic acid-loaded polyplex. Encapsulation efficiency of retinoic acid was found to be 81.51 ± 4.33% for retinoic acid-loaded polyplex formulation. The drug release was observed to be in a controlled pattern with 72.23 ± 1.32% release of retenoic acid from polyplex formulation. Cell line studies of the formulation displayed better cell inhibition and low cytotoxicity for the retinoic acid-loaded polyplexes in comparison to pure retinoic acid, thus demonstrating better potential action against colorectal cancer cell line HCT-15. Retinoic acid-loaded polyplexes indicated higher potential for the delivery of the active whereas the cell line studies displayed the efficacy of the formulation against colorectal cancer cell line HCT-15.
Assuntos
Neoplasias Colorretais/tratamento farmacológico , Portadores de Fármacos , Nanoestruturas/química , Tretinoína/administração & dosagem , Linhagem Celular Tumoral , Neoplasias Colorretais/patologia , Portadores de Fármacos/síntese química , Portadores de Fármacos/química , Portadores de Fármacos/farmacocinética , Composição de Medicamentos/métodos , Liberação Controlada de Fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Ácido Hialurônico/síntese química , Ácido Hialurônico/química , Ácido Hialurônico/farmacocinética , Nanoestruturas/uso terapêutico , Tamanho da Partícula , Polímeros/química , Polímeros/farmacologia , Espectroscopia de Infravermelho com Transformada de Fourier , Tretinoína/química , Tretinoína/farmacocinéticaRESUMO
Recently, promising strategies of plexes include the complexation of nucleic acids with lipids (lipoplexes) and different kinds of polymers (polyplexes) for delivery of actives and genetic material in abnormal conditions like cancer, cystic fibrosis and genetic disorders. The present review article focuses on the comparative aspects of lipoplexes and polyplexes associated with molecular structure, cellular transportation and formulation aspects. The major advantages of lipoplexes and polyplexes over conventional liposomes involve non-immunogenic viral gene transfer, facile manufacturing and preservation of genetic material encapsulated within the nanocarriers. Lipoplexes and polyplexes enhance the transfection of DNA into the cell by stepwise electrostatic cationic-anionic interaction with DNA backbones. The ease and cost-effective formation of complexes extend their applications in the treatment of cancer and genetic disorders. Lipoplexes and polyplexes necessitate intensive research in the fields of quality, toxicity and methods of preparation for commercialization.