PMID- 29046617 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1522-0613 (Print) IS - 1937-3791 (Electronic) IS - 1522-0613 (Linking) VI - 17 DP - 2016 TI - A fluorescence in situ hybridization (FISH) protocol for stickleback tissue. PG - 603-617 AB - BACKGROUND: Threespine stickleback are an important model for behaviour and evolutionary studies. A growing number of quantitative trait loci (QTL) and gene expression studies are identifying genes related to ecologically important traits in sticklebacks. In order to visualize the expression of candidate genes, we developed a fluorescence in situ hybridization (FISH) protocol. METHODS: We present a protocol for FISH on fresh or flash-frozen dissected tissue, using either cryo- or paraffin embedding. The protocol covers probe design guidelines and synthesis, sample embedding, sectioning, and the hybridization process. The protocol is optimized for brain tissue. Key steps for modifying the protocol for other tissues are noted. RESULTS: The FISH protocol resulted in specific labelling under all combinations of dissection and embedding conditions. Paraffin embedding preserved morphology better than cryo-embedding. We provide representative results showing the expression of glial fibrillary acidic protein (GFAP), oxytocin receptor (OXTR), and tyrosine hydroxylase (TH) in the brain. FAU - James, Noelle AU - James N AD - Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. FAU - Liu, Xiaochen AU - Liu X AD - Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. FAU - Bell, Alison AU - Bell A AD - Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. AD - School of Integrative Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA. LA - eng GR - R01 GM082937/GM/NIGMS NIH HHS/United States PT - Journal Article PL - United States TA - Evol Ecol Res JT - Evolutionary ecology research JID - 100961530 PMC - PMC5642962 MID - NIHMS869359 OTO - NOTNLM OT - Gasterosteus aculeatus OT - RNA OT - fluorescence in situ hybridization OT - fluorescence methods OT - gene expression OT - gene localization OT - in situ hybridization OT - threespine stickleback EDAT- 2016/01/01 00:00 MHDA- 2016/01/01 00:01 PMCR- 2017/10/16 CRDT- 2017/10/20 06:00 PHST- 2017/10/20 06:00 [entrez] PHST- 2016/01/01 00:00 [pubmed] PHST- 2016/01/01 00:01 [medline] PHST- 2017/10/16 00:00 [pmc-release] PST - ppublish SO - Evol Ecol Res. 2016;17:603-617.