title: A magnetic-dependent protein corona of tailor-made superparamagnetic iron oxides alters their biological behaviors.
abstract: In recent years, it is becoming increasingly evident that once nanoparticles come into contact with biological fluids, a protein corona surely forms and critically affects the biological behaviors of nanoparticles. Herein, we investigate whether the formation of protein corona on the surface of superparamagnetic iron oxides (SPIOs) is influenced by static magnetic field. Under static magnetic field, there is no obvious variation in the total amount of protein adsorption, but the proportion of adsorbed proteins significantly changes. Noticeably, certain proteins including apolipoproteins, complement system proteins and acute phase proteins, increase in the protein corona of SPIOs in the magnetic field. More importantly, the magnetic-dependent protein corona of SPIOs enhances the cellular uptake of SPIOs into the normal cell line (3T3 cells) and tumor cell line (HepG2 cells), due to increased adsorption of apolipoprotein. In addition, SPIOs with the magnetic-dependent protein corona cause high cytotoxicity to 3T3 cells and HepG2 cells. This work discloses that superparamagnetism as a key feature of SPIOs affects the composition of protein corona to a large extent, which further alters the biological behaviors of SPIOs.
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Ziyao
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Zhan
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Minggang
authors.initials: M
authors.lastname: Yang
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Qi
authors.initials: Q
authors.lastname: Yang
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Xianghui
authors.initials: X
authors.lastname: Xu
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Fang
authors.initials: F
authors.lastname: Lan
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Yao
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Sichuan University, National Engineering Research Center for Biomaterials Chengdu, Chengdu, China. wuyao@scu.edu.cn zwgu@scu.edu.cn.
authors.forename: Zhongwei
authors.initials: Z
authors.lastname: Gu
mesh_terms: D016475:3T3 Cells; D000818:Animals; D001053:Apolipoproteins / Q000737:chemistry / Q000494:pharmacology; D003603:Cytotoxins / Q000737:chemistry / Q000494:pharmacology; D005290:Ferric Compounds / Q000737:chemistry / Q000494:pharmacology; D056945:Hep G2 Cells; D006801:Humans; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D051379:Mice; D008807:Mice, Inbred BALB C
chemical_list: D001053:Apolipoproteins; D003603:Cytotoxins; D005290:Ferric Compounds; D058185:Magnetite Nanoparticles; C000499:ferric oxide