Impact of particle size and pH on protein corona formation of solid lipid nanoparticles:A proof-of-concept study

• 作者: Wenhao Wang Zhengwei Huang Yanbei Li Wenhua Wang Jiayu Shi Fangqin Fu Ying Huang Xin Pan Chuanbin Wu
• 来源期刊: 药学学报（英文版）
• 年，卷（期）: 2021,（4）
• 所属期刊栏目: Original articles
• 页码范围: 1030-1046
• 页数: 17页
• 语种: 英文

摘要

When nanoparticles were introduced into the biological media,the protein corona would be formed,which endowed the nanoparticles with new bio-identities.Thus,controlling protein corona for-mation is critical to in vivo therapeutic effect.Controlling the particle size is the most feasible method during design,and the influence of media pH which varies with disease condition is quite important.The impact of particle size and pH on bovine serum albumin(BSA)corona formation of solid lipid na-noparticles(SLNs)was studied here.The BSA corona formation of SLNs with increasing particle size(120-480 nm)in pH 6.0 and 7.4 was investigated.Multiple techniques were employed for visualization study,conformational structure study and mechanism study,etc."BSA corona-caused aggregation"of SLN2-3 was revealed in pH 6.0 while the dispersed state of SLNs was maintained in pH 7.4,which significantly affected the secondary structure of BSA and cell uptake of SLNs.The main interaction was driven by van der Waals force plus hydrogen bonding in pH 7.4,while by electrostatic attraction in pH 6.0,and size-dependent adsorption was confirmed.This study provides a systematic insight to the understanding of protein corona formation of SLNs.