FLEth RNA Intercalating Probe is a Convenient Reporter for Small Interfering RNAs

Download
  1. Get@NRC: FLEth RNA Intercalating Probe is a Convenient Reporter for Small Interfering RNAs (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1021/ja902636m
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of the American Chemical Society
Volume131
Issue29
Pages98729873; # of pages: 2
Subjectphenanthridine; fluorescein moiety; protein; FLEth; siRNA; liposomes; nucleoli
AbstractHere we report that the phenanthridine derivative covalently linked to a fluorescein moiety (FLEth) can act as a fluorescence based probe for duplex short interfering RNA (siRNA) and that this probe can also be used to report on protein−RNA interactions. A fluorescence resonance energy transfer (FRET) signal that is observed at 600 nm occurs when FLEth is complexed with siRNA. At least 2 molecules of FLEth can bind to 21 nt duplex siRNA, and the dissociation constants for these interactions are reported. We find that FLEth can also report on the interaction of siRNAs with the Carnation Italian ringspot viral suppressor of RNA silencing p19. FLEth does not bind to the siRNA−p19 complex nor can p19 bind to the siRNA−FLEth complex; rather FLEth can report on the fraction of siRNA that is unbound. FLEth can also bind siRNA in delivery systems such as liposomes. Once the siRNA reaches the interior of Huh 7.5 cells, FLEth dissociates from the siRNA and is found in the nucleoli suggesting that FLEth cannot bind to siRNAs that are associated with the RNA silencing machinery.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Steacie Institute for Molecular Sciences
Peer reviewedYes
NRC publication
This is a non-NRC publication

"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.

NPARC number16080397
Export citationExport as RIS
Report a correctionReport a correction
Record identifierbbb1777b-33ae-422a-ad61-a5b2e103b429
Record created2010-09-21
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: