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  • Title: Multiple reprobing of Western blots after inactivation of peroxidase activity by its substrate, hydrogen peroxide.
    Author: Sennepin AD, Charpentier S, Normand T, Sarré C, Legrand A, Mollet LM.
    Journal: Anal Biochem; 2009 Oct 01; 393(1):129-31. PubMed ID: 19523435.
    Abstract:
    Sequential detections of different proteins on Western blot save time and precious samples. The main problem concerning reprobing is that stripping buffers can unbind both the antibody and the tested antigen. An original reprobing method has been set up based on horseradish peroxidase (HRP) inhibition after enhanced chemiluminescence detection. Instead of removing previously fixed antibodies as common stripping buffers do, the HRP activity linked to the secondary antibody is irreversibly inhibited by excess of hydrogen peroxide. A 15-min incubation allows one to perform at least five different sequential detections without losing significant amounts of blotted proteins.
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