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A practical strategy for immunofluorescent detecting multiple targets in mouse tissues without restrictions on the

Shangyi Yu1, Xi He1, Aleksandra Drelich2

  • 1Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA; Department of Cardiovascular Surgery, Shanghai Changhai Hospital, Shanghai 200433, China.

Pathology, Research and Practice
|March 9, 2019
PubMed

Commercial deficiency of practical system to label multiple targets in experimental mouse tissues significantly hinders the feasibility to study the potential association between/among multiple targets using tissue-based immunofluorescence (IF) staining. We have developed a new protocol to do dual - labeling immunofluorescences on mouse tissues by combining direct and indirect immunofluorescence, making it possible to use commercial antibodies from the same specious (rabbit) to detect multiple targets in formalin-fixed paraffin-embedded (FFPE) archival mouse tissues simultaneously. This method applies indirect immunofluorescence to assess the first antigen in mouse tissues by using a rabbit anti-mouse polyclonal antibody and goat anti-rabbit antibody. After that, normal rabbit serum was employed to blocking the free binding sites of the previous antibodies. Direct immunofluorescence was used to assess the second antigen by a commercial kit-labeled rabbit anti-human (mouse) antibody at different emission wavelength. At last, cell nuclei were co-stained by DAPI. The outcomes demonstrated that this protocol obtain promising signals of both antigens and the nuclei. Moreover, this method also works on infection disease models in which samples are often over fixed due to biosafety rules.

Keywords:
AntibodyImmunofluorescent stainingStrategy

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