The inhibition of anti-DNA binding to DNA by nucleic acid binding polymers.

Published

Journal Article

Antibodies to DNA (anti-DNA) are the serological hallmark of systemic lupus erythematosus (SLE) and can mediate disease pathogenesis by the formation of immune complexes. Since blocking immune complex formation can attenuate disease manifestations, the effects of nucleic acid binding polymers (NABPs) on anti-DNA binding in vitro were investigated. The compounds tested included polyamidoamine dendrimer, 1,4-diaminobutane core, generation 3.0 (PAMAM-G3), hexadimethrine bromide, and a β-cylodextrin-containing polycation. As shown with plasma from patients with SLE, NABPs can inhibit anti-DNA antibody binding in ELISA assays. The inhibition was specific since the NABPs did not affect binding to tetanus toxoid or the Sm protein, another lupus autoantigen. Furthermore, the polymers could displace antibody from preformed complexes. Together, these results indicate that NABPs can inhibit the formation of immune complexes and may represent a new approach to treatment.

Full Text

Duke Authors

Cited Authors

  • Stearns, NA; Lee, J; Leong, KW; Sullenger, BA; Pisetsky, DS

Published Date

  • 2012

Published In

Volume / Issue

  • 7 / 7

Start / End Page

  • e40862 -

PubMed ID

  • 22808279

Pubmed Central ID

  • 22808279

Electronic International Standard Serial Number (EISSN)

  • 1932-6203

Digital Object Identifier (DOI)

  • 10.1371/journal.pone.0040862

Language

  • eng

Conference Location

  • United States