Perfect Nuclear Stain for Immunofluorescence Studies

University of Illinois, Chicago
Department of Microbiology and Immunology
PostDoctoral Research Fellow

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Company:

Sigma-Aldrich

Product Name:

4′,6-Diamidino-2-phenylindole dihydrochloride

Catalog Number:

D8417

I often use immunofluorescence assays to determine protein localization in the cell. Generally, my protein of interest resides in the cytoplasm of the cell and I use DAPI for nuclear staining. It works amazingly well for every single experiment. DAPI from sigma does not give any non-specific staining and works immediately, in seconds.

Experimental Design and Results Summary

Application

Immunoflurescence

Starting Material

Cervical cancer cells

Protocol Overview

Cells were fixed in paraformaldehyde, stained with anti-AKAP4 antibody, and followed by secondary antibody. 10 microlitres of DAPI solution (1mg/ml) was added at the end to stain the nuclei of the cells. Images were captured using a fluorescece microscope.

Tips

For DAPI staining, less is more.

Results Summary

It gives very specific and sharp blue color in the nuclei of the cells.

Additional Notes

None

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Summary

The Good

Highly specific, sharp staining

The Bad

None

The Bottom Line

Perfect product for nuclear staining of the cells

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