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Updated: Jun 20, 2026
Imaging Protein-protein Interactions in vivo
Published on: October 10, 2010
In vivo detection of RNA-binding protein interactions with cognate RNA sequences by fluorescence resonance energy
Martina Huranová1, Joseph A Jablonski, Ales Benda
1Department of RNA Biology, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, CZ-14220 Prague 4, Czech Republic.
Abstract:
Expression of the nascent RNA transcript is regulated by its interaction with a number of proteins. The misregulation of such interactions can often result in impaired cellular functions that can lead to cancer and a number of diseases. Thus, our understanding of RNA-protein interactions within the cellular context is essential for the development of novel diagnostic and therapeutic tools. While there are many in vitro methods that analyze RNA-protein interactions in vivo approaches are scarce. Here we established a method based on fluorescence resonance energy transfer (FRET), which we term RNA-binding mediated FRET (RB-FRET), which determines RNA-protein interaction inside cells and tested it on hnRNP H protein binding to its cognate RNA. Using two different approaches, we provide evidence that RB-FRET is sensitive enough to detect specific RNA-protein interactions in the cell, providing a powerful tool to study spatial and temporal localization of specific RNA-protein complexes.
Insights
Researchers developed a new method, RNA-binding mediated FRET (RB-FRET), to detect RNA-protein interactions within living cells. This technique is crucial for understanding diseases linked to misregulated RNA-protein binding and developing new therapies.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- RNA-protein interactions regulate gene expression and are vital for cellular functions.
- Misregulation of these interactions is implicated in various diseases, including cancer.
- Existing in vitro methods are insufficient for studying RNA-protein interactions in their native cellular environment.
Purpose of the Study:
- To establish a novel in vivo method for detecting RNA-protein interactions.
- To characterize the RNA-binding mediated FRET (RB-FRET) technique.
- To investigate the binding of hnRNP H protein to its cognate RNA within cells.
Main Methods:
- Development of the RNA-binding mediated FRET (RB-FRET) assay.
- Utilizing fluorescence resonance energy transfer (FRET) to detect molecular interactions.
- In vivo testing of RB-FRET on hnRNP H protein and its RNA target.
Main Results:
- RB-FRET successfully detected specific RNA-protein interactions inside living cells.
- The method demonstrated sensitivity in identifying these crucial molecular complexes.
- Validation was achieved through two independent experimental approaches.
Conclusions:
- RB-FRET is a sensitive and powerful tool for studying RNA-protein interactions in vivo.
- This technique allows for the analysis of spatial and temporal localization of RNA-protein complexes.
- Understanding these interactions is key for developing novel diagnostic and therapeutic strategies for diseases.
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