| DOI | Resolve DOI: https://doi.org/10.1021/ja902636m |
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| Author | Search for: van der Wiel, Ingrid M.1; Search for: Cheng, Jenny1; Search for: Koukiekolo, Roger1; Search for: Lyn, Rodney K.1; Search for: Stevens, Nathan; Search for: O'Connor, Naphtali; Search for: Turro, Nicholas J.; Search for: Pezacki, John Paul1 |
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| Affiliation | - National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
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| Format | Text, Article |
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| Subject | phenanthridine; fluorescein moiety; protein; FLEth; siRNA; liposomes; nucleoli |
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| Abstract | Here 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. |
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| Publication date | 2009 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC publication | This is a non-NRC publication"Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC. |
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| NPARC number | 16080397 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | bbb1777b-33ae-422a-ad61-a5b2e103b429 |
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| Record created | 2010-09-21 |
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| Record modified | 2020-04-16 |
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