实验动物技术

Lethal phase determination1. Pick a bunch of heterozygote L4 hermaphrodites to a new plate.2. The next day there will be eggs on the plate; pick exactly 20 of these to each of a few plates. Make sure ...

Integrating extrachromasomal arrays into the C. elegans chromosomesWhy and how to do itby Michael Koelle12/20/94What is the benefit of integrating an extrachromosomal array? Extrachromosomal arrays su ...

Microinjecting worms by Michael Koelle8/23/94You will have a couple frustrating sessions when you first attempt this technique but everyone seems to master injection after a few days and it works very ...

Generating males by heat shockby Michael Koelle1. Set up ~6 plates with 5 L4 hermaphordites each.2. Heat shock 4-6 hours at 30°. 8-9 hours works but gives few progeny.3. Return to 20°. Should get a fe ...

LIQUID CULTURE OF WORMS WITH FERMENTORMimi H. Zhou Hsiuchin Yang Bill Walthall Biology Department Georgia State University Atlanta GA 30302 The yield of C. elegans and their food (E.coli) are relative ...

Liquid culture of wormsBy Michael Koelle and Tory Herman adapted from Mir Hengartner4/6/94Media1) superbroth (5 X 2 1/2 liters autoclaved in 6 liter flasks) 5 X 30 g Bactotryptone 5 X 60 g yeast extra ...

Single Worm PCRReagents:Lysis Buffer: 50 mM KCl10 mM Tris pH 8.32.5 mM MgCl20.45% NP-40 (IGEPAL)0.45% Tween-200.01% Gelatin Proteinase K: 20 mg/ml 10X PCR Buffer: 100 mM Tris 500 mM KCl 15 mM MgCl2 pH ...

snip-SNP mapping with CB4856 polymorphismsMaterials:Worm Lysis Buffer PCR reagents PCR primers flanking a SNP 2X restriction mix with the appropriate enzyme Procedure:Generate recombinant lines for th ...

Synchronizing Worm CulturesSynchronization is based on the fact newly hatched larvae will live but not develop if deprived of a food source. An asynchronous population of embryos is isolated and then ...

N2 development times at different temperaturesby Michael KoelleDetermined empirically; times in hours are given from the first division of the zygote.15°20°25°eggs laid217hatch22139L1 molt492921L2 mo ...

low frequency tableCodon usage for C. elegans lowly biased (lowly expressed by inference) genes. (Stenico M. Lloyd A. T. and Sharp P. M. (1994). Nucleic Acids Research 22: 2437-2246 AmAcidCodonNumber/ ...

Worm genomic Southern blotsby Michael Koelle4/6/94I. Preparing worm genomic DNA: requires 1-2 days to seed agarose plates a few days for the worms to grow 1-2 days to prep the DNA1. Seed large agarose ...

Worm PCRPick one worm and place it in a 2.5 l drop of lysis buffer in the cap of a PCR tube. Close and centrifuge briefly to move to the bottom of the tube. Freeze the tubes at -70°C for 15 min. The ...

Genomic DNA prep(Jorgensen Lab ) Make worm growth plates. These use agarose to avoid impurities in most batches of agar and are enriched to allow greater worm growth. Mix:5 g Bacto tryptone2 g Bacto y ...

Joe's mRNA prep(Audrey Gasch Pat Brown ) Oligo-dT cellulose prepDump Ambion vial contents into 50 ml c/f tube Add 10 ml 1x NETS to vial cap rinse vial dump 10 ml into c/f tube Spin tube 3000 rpm 2 min ...

Yale RNA prep(Rebecca D. Burdine Michael J. Stern ) Add 8 ml of TRIZOL to 2 ml packed worms in 15 ml centrifuge tube. Vortex and invert tube to solubilize and lyse worms for at least 10 min. Divide in ...

Antibody Staining of Dissected Gonads - From R. Francis - -Adapted by Min-Ho Lee-Antibody staining (in Tubes) 1. Using a pasteur pipette (drawn in flame and cut open) transfer worm carcasses with a ...

RUVKUN Antibody Staining Protocol revised 10/29/90Fixation: 1. C. elegans N2 grown in liquid or plates. Harvest worms.Wash for 2 hours at room temp. in 1X M9 or PBS. 2. Fix in 5 ml of FRESH THAT DAY 1 ...

C. elegans whole mount immunohistochemistry with Bouin's FixativeI have developed a fixation protocol which provides an alternative set of conditions to test antisera that work poorly on paraformaldeh ...

DAPI Staining To visualize DNA incubate fixed samples with 100 ng/ml 4'6'-diamidino-2-phenylindole hydrochloride (DAPI) in PBS for 30 min. Rinse 3x with PBTw. MaterialsPBS: Sambrook et al. (Molecular ...