Sensitive detection of RNAs in single cells by flow cytometry
- PMID: 1738608
- PMCID: PMC310329
- DOI: 10.1093/nar/20.1.83
Sensitive detection of RNAs in single cells by flow cytometry
Erratum in
- Nucleic Acids Res 1992 Oct 25;20(20):5518
Abstract
A rapid and sensitive fluorescent in situ hybridization method has been developed to probe RNA contents of individual cells by flow cytometry. Fixed cells in suspension were hybridized with 5' end-fluorophore-labeled oligodeoxynucleotides complementary to defined regions of the RNA of interest and analyzed by flow cytometry. With this method, we monitored combinations of histone H4 mRNA, 18S rRNA and 28S rRNA levels in synchronized HeLa S3 cells by multicolor analysis. A fluorescence signal equivalent to 1800 copies of histone H4 mRNA per cell was detected with signal-to-background ratio of 5.4. If non-specific binding of the fluorophore-labeled probe can be reduced, as few as 100 copies of mRNA of the size of H4 could be detected in individual cells by flow cytometry.
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