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

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • Griffith, DM; Jayaram, DT; Spencer, DM; Pisetsky, DS; Payne, CK

Published Date

  • October 2020

Published In

Volume / Issue

  • 15 / 5

Start / End Page

  • 051006 -

PubMed ID

  • 33003950

Pubmed Central ID

  • PMC7863680

Electronic International Standard Serial Number (EISSN)

  • 1559-4106

International Standard Serial Number (ISSN)

  • 1934-8630

Digital Object Identifier (DOI)

  • 10.1116/6.0000439


  • eng