Microparticles as a source of extracellular DNA.

Journal Article (Journal Article)

Microparticles are small membrane-bound vesicles that display pro-inflammatory and pro-thrombotic activities important in the pathogenesis of a wide variety of diseases. These particles are released from activated and dying cells and incorporate nuclear and cytoplasmic molecules for extracellular export. Of these molecules, DNA is a central autoantigen in systemic lupus erythematosus (SLE). As studies in our laboratory show, DNA occurs prominently in microparticles, translocating into these structures during apoptotic cell death. This DNA is antigenically active and can bind to lupus anti-DNA autoantibodies. These findings suggest that microparticles are an important source of extracellular DNA to serve as an autoantigen and autoadjuvant in SLE.

Full Text

Duke Authors

Cited Authors

  • Pisetsky, DS; Gauley, J; Ullal, AJ

Published Date

  • April 2011

Published In

Volume / Issue

  • 49 / 1-3

Start / End Page

  • 227 - 234

PubMed ID

  • 21132466

Pubmed Central ID

  • PMC3724471

Electronic International Standard Serial Number (EISSN)

  • 1559-0755

Digital Object Identifier (DOI)

  • 10.1007/s12026-010-8184-8


  • eng

Conference Location

  • United States