Dual fluorescence detection of protein and RNA in Drosophila tissues

Hila Toledano, Cecilia D'Alterio, Mariano Loza-Coll, D. Leanne Jones

Research output: Contribution to journalArticlepeer-review

Abstract

Detection of RNAs by in situ hybridization (ISH) is a well-established technique that permits the study of specific RNA expression patterns in tissues; however, not all tissues are equally amenable to staining using the same procedure. Here we describe a protocol that combines whole-mount immunofluorescence (IF) and fluorescence in situ hybridization (FISH) for the simultaneous detection of specific RNA transcripts and proteins, greatly enhancing the spatial resolution of RNA expression in complex, intact fly tissues. To date, we have successfully used this protocol in adult testis, larval male gonads, adult intestine and Malpighian tubules. IF is conducted in RNase-free solutions, prior to the harsh conditions of FISH, in order to preserve protein antigenicity within dissected tissues. Separate protocols are described for mRNA and miRNA detection, which are based on robust digoxigenin (DIG) RNA and locked nucleic acid (LNA) probes, respectively. The combined IF-FISH procedure can be completed in 2 d for miRNA detection and 4 d for mRNA detection. Although optimized for Drosophila, this IF-FISH protocol should be adaptable to a wide variety of organisms, tissues, antibodies and probes, thus providing a reliable and simple means to compare RNA and protein abundance and localization.

Original languageEnglish
Pages (from-to)1808-1817
Number of pages10
JournalNATURE PROTOCOLS
Volume7
Issue number10
DOIs
StatePublished - 6 Sep 2012

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)

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