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Imiquimod-loaded nanocapsules improve cytotoxicity in cervical cancer cell line.
European Journal of Pharmaceutics and Biopharmaceutics 2019 January 8
This paper proposes the development of imiquimod-loaded polymeric nanocapsules formulation for the treatment of cervical cancer. The mechanism of death involved in the reduction of the cell viability as well as the production of an inflammation marker (IL-6) after the treatment in cell line SiHa have been evaluated. The formulation has significantly decreased the viability of the cells in a time-dependent manner, after 24, 48 and 72 hours. Additionally, results showed a cellular decrease of almost 80% of the cells after 72 hours of treatment. The formulation induced death by apoptosis, necrosis, autophagy, and increased the percentage of SubG1subpopulation of SiHa cells after 72h. After the same time-interval, the formulation significantly prevented the appearance of colonies, showing effectiveness against SiHa. Finally, the formulation stimulated SiHa cells to release IL-6. These findings open new possibilitiesfor the development of aqueous nanosuspension containing imiquimod as a novel strategy for the treatment of cervical cancer.
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