Abstract
Poly-hydroxyethyl methacrylate [p(HEMA)] is one of the most widely used polymers in different biomedical applications because it is a biocompatible and a biodegradable material. Tryptophan (Trp) is a biocompatible, antioxidant, and anti-inflammatory amino acid. Trp modification contributes to the more effective use of nanoparticles in cancer therapy. The aim of this study was to synthesize polymeric nanoparticles tryptophan-graft-poly(HEMA) [Trp-g-p(HEMA)] and assess characterization and toxicity/biocompatibility potential of it in terms of using a drug carrier. The nanoparticles were synthesized with surfactant-free emulsion polymerization and grafting technique and the grafting efficiency was found as 78.65 ± 2.48%. The characterization of the nanoparticles was performed by FT-IR spectroscopy, zeta analysis, scanning electron microscopy, atomic force microscopy, and swelling test. The nanopolymers had the spectra from 750 to 4000 cm−1 and characteristic peaks of stretching bands, 164.1 ± 29.2 nm average size, − 10.2 ± 8.7 mV surface charge, smooth surface, and nearly spherical shape. The swelling ratios of them were estimated as 79.52 ± 0.86% in d.w. and 93.33 ± 2.32% in PBS at 25 °C, 35.71 ± 0.62% in d.w., and 42.86 ± 0.64% in PBS at 37 °C. The nanoparticles did not induce cytotoxicity, oxidative stress generation, and genotoxicity on human healthy lymphocyte cells. Trp-g-p(HEMA) had hemocompatible properties. We found no irritant effect in the HET-CAM test. The acute oral LD50 value of the nanopolymers was > 2000 mg/kg body weight on BALB/c mice. We announce that the polymeric nanoparticles Trp-g-p(HEMA) is a biocompatible material and has potential to use as a drug carrier for oral, intravenous, and ocular administrations.
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Acknowledgements
Characterization analysis and experimental studies were performed in Ege University, Drug Research and Development and Pharmacokinetic Applications (ARGEFAR). The authors thank Biorege Lab. for contributions to synthesis of the nanoparticles.
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This study was supported by Ege University, Scientific Research Project (Project Number is 2017/FEN/028).
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Guler, C., Gulcemal, S., Guner, A. et al. Polymeric nanoparticles tryptophan-graft-p(HEMA): a study on synthesis, characterization, and toxicity. Polym. Bull. 80, 10973–10996 (2023). https://doi.org/10.1007/s00289-022-04607-2
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DOI: https://doi.org/10.1007/s00289-022-04607-2