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Gut granules are prominent cytoplasmic organelles that auto fluoresce when excited by much of the visible spectrum confounding fluorescence imaging of endogenous fluorescent reporters. We report a simple, chemical-free fixation method for C. elegans that preserves non-cytoplasmic GFP localization for months while nearly eliminating intestinal autofluorescence. To illustrate the utility and limitations of the method, we present representative images of live and heat-fixed worms expressing a variety of membrane and non-membrane localized GFP reporters expressed in diverse tissues, cells, and cellular organelles. We also describe our experience with various experimental parameters. The observed variability of non-membrane-anchored reporters suggests prudent adopters should empirically interrogate the signal fidelity of their specific reporters upon heat fixation.
Pubmed ID: 40756274
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Center that acquires, maintains, and distributes genetic stocks and information about stocks of the small free-living nematode Caenorhabditis elegans for use by investigators initiating or continuing research on this genetic model organism. A searchable strain database, general information about C. elegans, and links to key Web sites of use to scientists, including WormBase, WormAtlas, and WormBook are available.
View all literature mentionsMicroscopy facility. Contains microscopes including confocal, super-resolution, multi-photon, light sheet, live cell imaging, high-content screening, slide scanning, laser dissection and macroscopy stations. Features wet lab space, eukaryotic and prokaryotic incubation, and access to nearby animal care facilities for wide range of species.Services include Cell Imaging,Confocal Microscopy,Consultations,Data Analysis,Data Processing And Interpretation,High Content Screening,Laser Capture Microdissection,Microscopy,Multiphoton Microscopy,Optical Imaging,Slide Scanning,Whole Slide Imaging.
View all literature mentionsCentral data repository for nematode biology including complete genomic sequence, gene predictions and orthology assignments from range of related nematodes.Data concerning genetics, genomics and biology of C. elegans and related nematodes. Derived from initial ACeDB database of C. elegans genetic and sequence information, WormBase includes genomic, anatomical and functional information of C. elegans, other Caenorhabditis species and other nematodes. Maintains public FTP site where researchers can find many commonly requested files and datasets, WormBase software and prepackaged databases.
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