Immunofluorescence Combined with Single-Molecule RNA Fluorescence In Situ Hybridization for Concurrent Detection of Proteins and Transcripts in Stress Granules.

Immunofluorescence (IF) microscopy is arguably one of the most commonly used methods for studying structure and composition of stress granules (SGs). While in most cases standard IF protocols are sufficient to visualize protein components of SGs, concurrent detection of proteins and transcripts in stress granules requires more sophisticated and problematic approaches. Here we present a well-established, simple, robust, and fluorescent protein-compatible method for simultaneous detection of proteins and transcripts in individual stress granules using combination of IF and single-molecule RNA fluorescence in situ hybridization (smRNA FISH).