Inhibition of murine macrophage nitric oxide production by synthetic oligonucleotides.


Journal Article

Synthetic 30-mer phosphorothioate (Ps) oligonucleotides (ODN) comprised of single bases (SdA30, SdC30, SdG30, and SdT30) were assessed for their effects on nitric oxide (NO) production by murine bone marrow macrophages (BMMC) and macrophage cell lines J774 and RAW264.7. Pretreatment of these cells with any of the four Ps ODN inhibited NO production induced by CpG ODN, E. coli DNA (EC DNA), or LPS. This inhibition was time- and dose-dependent and was observed even if the Ps ODN were added as long as 12 h after stimulation. As in the case of stimulatory ODN, inhibition was dependent on backbone structure and length. Thus, all four 30-mer, single-base Ps ODN were inhibitory, and only dG30 among phosphodiester ODN was inhibitory. Together, these observations indicate that Ps ODN can inhibit macrophage production of inflammatory mediators, suggesting a role of these compounds as immunomodulatory agents.

Full Text

Duke Authors

Cited Authors

  • Zhu, F-G; Reich, CF; Pisetsky, DS

Published Date

  • April 2002

Published In

Volume / Issue

  • 71 / 4

Start / End Page

  • 686 - 694

PubMed ID

  • 11927656

Pubmed Central ID

  • 11927656

International Standard Serial Number (ISSN)

  • 0741-5400


  • eng

Conference Location

  • United States