β-cyclodextrin/alginate nanoparticles encapsulated 5-fluorouracil as an effective and safe anticancer drug delivery system

Although 5-Fluorouracil (5-FU) is one of the most frequently used cytotoxic chemotherapy drugs in the treatment of cancer, it possesses a short biological half-life and toxic side effects against normal healthy cells. In this work, beta-cyclodextrin/alginate (beta-CD/Alg) nanoparticles loaded with 5-fluorouracil (5-FU) were prepared to evaluate release properties and bioactivity in different pH media. Stable nanocomposites with the best loading efficiency (36%) and encapsulation efficiency (90%) were successfully fabricated. The size of the nanocomposite solution was determined via dynamic light scattering (DLS) to be in the range 30-120 nm with a mean size of 70 nm, while TEM images showed the particle size of the nanocomposite to be in the range 30-80 nm with a mean size of 50 nm. The release profile of 5-FU in a simulated gastric fluid (pH 1.2) was much lower than in a simulated colorectal fluid (pH 7.4). The release behaviour of 5-FU from the nanocomposite was confirmed by the change in morphology in the pH media. A cytotoxicity assay indicated that the nanocomposite is an effective delivery system for 5-FU with strong antiproliferative activity against MCF-7 cells and negligible effects on normal healthy cells. (C) 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.

Automated summary

In this study, beta-cyclodextrin/alginate nanoparticles loaded with 5-fluorouracil (5-FU) were prepared and evaluated for their release properties and bioactivity in different pH media. The nanoparticles exhibited good loading efficiency and encapsulation efficiency. The release profile of 5-FU was influenced by the pH of the media, and the nanoparticles showed strong antiproliferative activity against cancer cells with minimal effects on normal cells.