Visualization of single RNA transcripts in situ.
IF: 63.714
Cited by: 1,099


Fluorescence in situ hybridization (FISH) and digital imaging microscopy were modified to allow detection of single RNA molecules. Oligodeoxynucleotide probes were synthesized with five fluorochromes per molecule, and the light emitted by a single probe was calibrated. Points of light in exhaustively deconvolved images of hybridized cells gave fluorescent intensities and distances between probes consistent with single messenger RNA molecules. Analysis of beta-actin transcription sites after serum induction revealed synchronous and cyclical transcription from single genes. The rates of transcription initiation and termination and messenger RNA processing could be determined by positioning probes along the transcription unit. This approach extends the power of FISH to yield quantitative molecular information on a single cell.

MeSH terms

Cell Line
In Situ Hybridization, Fluorescence
Oligonucleotide Probes
RNA Processing, Post-Transcriptional
RNA, Messenger
Transcription, Genetic


Femino, A M
Fay, F S
Fogarty, K
Singer, R H

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