Inhibition of rat corneal angiogenesis by a nuclease-resistant RNA aptamer specific for angiopoietin-2.

Journal Article (Journal Article)

Angiopoietin-2 (Ang2) appears to be a naturally occurring antagonist of the endothelial receptor tyrosine kinase Tie2, an important regulator of vascular stability. Destabilization of the endothelium by Ang2 is believed to potentiate the actions of proangiogenic growth factors. To investigate the specific role of Ang2 in the adult vasculature, we generated a nuclease-resistant RNA aptamer that binds and inhibits Ang2 but not the related Tie2 agonist, angiopoietin-1. Local delivery of this aptamer but not a partially scrambled mutant aptamer inhibited basic fibroblast growth factor-mediated neovascularization in the rat corneal micropocket angiogenesis assay. These in vivo data directly demonstrate that a specific inhibitor of Ang2 can act as an antiangiogenic agent.

Full Text

Duke Authors

Cited Authors

  • White, RR; Shan, S; Rusconi, CP; Shetty, G; Dewhirst, MW; Kontos, CD; Sullenger, BA

Published Date

  • April 29, 2003

Published In

Volume / Issue

  • 100 / 9

Start / End Page

  • 5028 - 5033

PubMed ID

  • 12692304

Pubmed Central ID

  • PMC154292

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.0831159100


  • eng

Conference Location

  • United States