Immunofluorescence Combined with Single-Molecule RNA Fluorescence In Situ Hybridization for Concurrent Detection of...

Area of Science:

• Cell Biology
• Molecular Biology
• Biochemistry

Background:

• Immunofluorescence (IF) is a key technique for visualizing protein localization in cellular structures like stress granules (SGs).
• Simultaneously detecting both proteins and RNA within SGs presents significant technical challenges with standard IF protocols.
• Existing methods for concurrent protein and RNA detection in SGs are often complex and less robust.

Purpose of the Study:

• To develop and present a robust method for simultaneous detection of proteins and RNA in individual stress granules.
• To provide a simple, fluorescent protein-compatible approach for enhanced stress granule analysis.
• To facilitate a deeper understanding of stress granule composition and dynamics.

Main Methods:

• Integration of immunofluorescence (IF) microscopy with single-molecule RNA fluorescence in situ hybridization (smRNA FISH).
• Utilized a well-established, simple, and robust protocol.
• Ensured compatibility with fluorescent protein tagging for protein visualization.

Main Results:

• Successfully demonstrated simultaneous visualization of proteins and transcripts within individual stress granules.
• The presented method is robust, simple to implement, and compatible with fluorescent proteins.
• This approach overcomes limitations of standard IF for concurrent protein-RNA analysis in SGs.

Conclusions:

• The combined IF and smRNA FISH method offers a powerful tool for studying stress granule composition.
• This technique simplifies the concurrent analysis of proteins and RNA in stress granules.
• The method advances the field of stress granule research by enabling more comprehensive analyses.