Nuclear-BRITE: an enhanced MS2 system for live-cell imaging of nuclear RNAs

Nuclear-BRITE enables fast, single-molecule live-cell imaging of nuclear RNAs with reduced background noise, surpassing previous MS2 system limitations.

• Why it matters: Understanding nuclear RNA dynamics is crucial for insights into gene regulation, but existing imaging methods are hindered by high background signals from nuclear-localized proteins, limiting their effectiveness.
• What they did: The authors developed Nuclear-BRITE, an improved method that minimizes nuclear background fluorescence, allowing for real-time visualization of endogenous nuclear RNAs at single-molecule resolution without affecting their natural behavior.
• The result: This advancement facilitates more accurate studies of nuclear RNA processes, opening new avenues for investigating gene expression regulation in live cells.