Computational analysis of miRNA-mediated repression of translation: Implications for models of translation initiation inhibition Journal Article uri icon



  • The mechanism by which miRNAs inhibit translation has been under scrutiny both in vivo and in vitro. Divergent results have led to the suggestion that miRNAs repress translation by a variety of mechanisms including blocking the function of the cap in stimulating translation. However, these analyses largely only examine the final output of the multistep process of translation. This raises the possibility that when different steps in translation are rate limiting, miRNAs might show different effects on protein production. To examine this possibility, we modeled the process of translation initiation and examined how the effects of miRNAs under different conditions might be explained. Our results suggest that different effects of miRNAs on protein production in separate experiments could be due to differences in rate-limiting steps. This analysis does not rule out that miRNAs directly repress the function of the cap structure, but it demonstrates that the observations used to argue for this effect are open to alternative interpretations. Taking all the data together, our analysis is consistent with the model that miRNAs may primarily repress translation initiation at a late step.

publication date

  • August 1, 2008

has restriction

  • bronze

Date in CU Experts

  • February 20, 2014 11:24 AM

Full Author List

  • Nissan T; Parker R

author count

  • 2

published in

  • RNA  Journal

Other Profiles

International Standard Serial Number (ISSN)

  • 1355-8382

Electronic International Standard Serial Number (EISSN)

  • 1469-9001

Additional Document Info

start page

  • 1480

end page

  • 1491


  • 14


  • 8