PMID- 31857964 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231020 IS - 2228-5881 (Print) IS - 2251-7308 (Electronic) IS - 2228-5881 (Linking) VI - 9 IP - 4 DP - 2019 Oct TI - Preparation and Characterization of Silk Fibroin Nanoparticles as a Potential Drug Delivery System for 5-Fluorouracil. PG - 601-608 LID - 10.15171/apb.2019.069 [doi] AB - Purpose: The aim of this study is to prepare 5-fluorouracil (5-FU) loaded silk fibroin nanoparticles (SFNPs) and to achieve a controlled release delivery system with the high loading capacity. Methods: SFNPs with 1:1, 1:3, and 1:10 ratios of 5-FU to silk fibroin were prepared. SFNPs were characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) analysis, Scanning electron microscope (SEM), and Transmission electron microscope (TEM). Loading efficiency, in vitro release, and cell viability were studied for optimal SFNPs. Results: The ratio of 1:1 was optimal formulation with the size and polydispersity index (PDI) of 221.03 nm and 0.093 before freeze drying, and 286.7 nm and 0.154 after freeze drying by lactose, respectively. The loading efficiency and loading content of this ratio were 52.32% and 34.35%, respectively. FT-IR and XRD analysis indicated the conformational change (from random coil to beta-sheet) in the structure of nanoparticles by increasing amount of the drug, which caused the smaller size, the higher loading efficiency, and the slower release pattern. The drugloaded nanoparticles reached to the half maximal inhibitory concentration (IC50) that were comparable with free drug on MCF7 (human breast cancer) cell line. Conclusion: This study was planned to achieve a promising controlled release drug delivery system for carrying 5-FU, as a potent anticancer drug. SFNPs were found proper candidates for delivery of a hydrophilic drug such as 5-FU. CI - (c) 2019 The Author (s). FAU - Rahmani, Hamid AU - Rahmani H AUID- ORCID: 0000-0001-5814-9703 AD - Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, 6734667149, Iran. AD - Student Research Committee, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, 6734667149, Iran. FAU - Fattahi, Ali AU - Fattahi A AUID- ORCID: 0000-0001-8226-5835 AD - Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. FAU - Sadrjavadi, Komail AU - Sadrjavadi K AUID- ORCID: 0000-0002-2959-4215 AD - Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, 6734667149, Iran. FAU - Khaledian, Salar AU - Khaledian S AUID- ORCID: 0000-0003-2161-9200 AD - Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran. FAU - Shokoohinia, Yalda AU - Shokoohinia Y AUID- ORCID: 0000-0003-3714-0835 AD - Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, 6734667149, Iran. LA - eng PT - Journal Article DEP - 20191024 PL - Iran TA - Adv Pharm Bull JT - Advanced pharmaceutical bulletin JID - 101578021 PMC - PMC6912188 OTO - NOTNLM OT - 5-Fluorouracile OT - Cytotoxicity OT - Nanoparticle OT - Precipitation OT - SF EDAT- 2019/12/21 06:00 MHDA- 2019/12/21 06:01 PMCR- 2019/10/24 CRDT- 2019/12/21 06:00 PHST- 2019/02/23 00:00 [received] PHST- 2019/07/08 00:00 [revised] PHST- 2019/07/21 00:00 [accepted] PHST- 2019/12/21 06:00 [entrez] PHST- 2019/12/21 06:00 [pubmed] PHST- 2019/12/21 06:01 [medline] PHST- 2019/10/24 00:00 [pmc-release] AID - 10.15171/apb.2019.069 [doi] PST - ppublish SO - Adv Pharm Bull. 2019 Oct;9(4):601-608. doi: 10.15171/apb.2019.069. Epub 2019 Oct 24.