DNA-nanoparticle interactions: Formation of a DNA corona and its effects on a protein corona.

TitleDNA-nanoparticle interactions: Formation of a DNA corona and its effects on a protein corona.
Publication TypeJournal Article
Year of Publication2020
AuthorsDM Griffith, DT Jayaram, DM Spencer, DS Pisetsky, and CK Payne
JournalBiointerphases
Volume15
Start Page051006
Issue5
Date Published10/2020
Abstract

There has been much recent interest in the protein "corona," the nonspecific adsorption of proteins on the surface of nanoparticles used in biological applications. This research investigates an analogous DNA corona. We find that particles (200 nm and 1 μm) incubated with DNA form a DNA corona, with a higher concentration of DNA adsorbed on the surface of cationic nanoparticles. With protein present, a combined DNA and protein corona is formed although DNA in solution displaces protein from the nanoparticle surface. Displacement of protein from the nanoparticle surface is dependent on the concentration of DNA in solution and was also observed for planar surfaces. Overall, we expect this investigation of the DNA corona to be important for nanomedicine applications, as well as disease states, especially systemic lupus erythematosus, in which biological particles with bound DNA are important mediators of inflammation and thrombosis.

DOI10.1116/6.0000439
Short TitleBiointerphases