Colloidal ferrite spinel nanoparticles (Co x Ni 1-x Fe 2 O 4 ) were prepared by a microwave-stimulated Bradley technique under nonhydrolytic conditions. The effect of Ni 2+ doping on the structural properties was studied by powder XRD. The particle size, hydrodynamic size, and morphology were evaluated by transmission electron microscopy (TEM) and dynamic light scattering (DLS), which showed mean crystallite sizes of ca. 10 and 60 nm for powder and colloidal suspensions of Co x Ni 1-x Fe 2 O 4 , respectively. The cytotoxicity of the nanoparticles was tested against murine macrophages J774.E, osteosarcoma D17 cells, and human red blood cells (RBCs). The adsorption of bovine serum albumin (BSA) was studied, and the BSA showed a high affinity for the surface [a]

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Disease progression-related differences in migratory potential of in vitro induced Tregs may be responsible for the failure of cellular therapy during the advanced stages of CIA.

Co1–xMnxFe2O4 ferrite nanoparticles have been synthesized by employing a microwave‐stimulated technique under non‐hydrolytic conditions. Structural, chemical, and morphological characterizations were carried out by XRD, SEM‐EDS, and TEM techniques. The stability of the nanoparticles and their tendency to form agglomerates were investigated by dynamic light scattering, exploiting the effect of different biological environments and protein stabilization. It was shown that bovine serum albumin adsorption was dependent upon the concentration and chemical composition of the nanaoparticle, showing higher affinities with increasing Co2+ content. The cytotoxicities of the nonsurface‐blocked Co1–xMnxFe2O4 nanoparticles were assessed for three cell lines: phagocytic murine macrophage (J774.E), cancer fibroblast human osteosarcoma (HTB), and mesenchymal stem cells derived from human adipose tissue (ASCs). The results indicate that the cytotoxic response strongly depends on the particle concentration as well as the type of cell line.