Abstract
Chitosan, the second naturally abundant polysaccharide, has shown promising anticancer activity against many cancer cells. There are various chitosan nanoparticle preparation techniques. This study compared three of these methods, namely, ionotropic gelation, microemulsion, and emulsification solvent diffusion in terms of their product physicochemical and biological properties. To compare different methods, type of chitosan, pH and concentration of chitosan solution were kept constant in all methods. The obtained chitosan nanoparticles were characterized using FTIR, UV–Visible spectroscopy, and SEM. The anticancer activity of the nanoparticles was evaluated by MTT assay in MDA-MB-231 cells at different doses (0.5, 1, 1.5, 2 mg/mL). The morphological alterations of cells were assessed by light inverted microscope. All three methods resulted in nanoparticle formation with the size and zeta potential range of 240–442 nm and + 19.1–34.6 mV, respectively. The ionotropic gelation method yielded smaller nanoparticles with higher zeta potential than those yielded by the microemulsion and emulsification solvent diffusion methods. The cytotoxicity assay showed a dose-dependent effect of nanoparticles. The nanochitosans prepared using the ionotropic gelation, microemulsion, and emulsification solvent diffusion methods showed maximum 77.87%, 63.12%, and 53.17% inhibition against MDA-MB-231 cells, respectively. The results concluded that all obtained nanoparticles have acceptable potency for cytotoxicity against MDA-MB-231 cells with IC50 ranged from 0.89 to 1.67 mg / mL. However, nanoparticles prepared using ionotropic gelation method exhibit the highest anticancer activity. Overall, chitosan nanoparticles obtained using all three methods could serve as anticancer agents and applied in the development of novel antitumor drugs.
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This work was supported by the Iranian Research Organization for Science and Technology [grant number 4404]
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Hassani, F.s., Hadizadeh, M., Zare, D. et al. Comparison of different methods for preparation of nanochitosan as anticancer agent. Polym. Bull. 81, 827–842 (2024). https://doi.org/10.1007/s00289-023-04739-z
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DOI: https://doi.org/10.1007/s00289-023-04739-z