Monosan Plus (HRP) Anti-Mouse Bulk Kit, 1 Kit (125 ml/1,250 tests)

Intended use: The Plus HRP Kits, Mouse is based on the streptavidin-biotin system. It is designed for qualitative detection of antigens in fixed paraffin-embedded tissue sections, in frozen tissue sections, and in cytological samples. The kit is developed for use in combination with monoclonal primary antibodies and sera obtained from mice. The Plus HRP Kit, Mouse can be used for examining tissues fixed in different solutions, e.g. formalin (neutrally buffered), B5, Bouin, ethanol, or HOPE.

Summary and explanation: The purpose of the immunohistochemical staining is to make tissue and cell antigens visible. The Plus HRP Kit, Mouse is a highly sensitive detection kit intended for use in immunohistochemistry and immunocytochemistry. The method is based on the streptavidin-biotin system which means that a biotinylated secondary antibody binds to several molecules of a conjugate composed of streptavidin and horse radish peroxidase. Visualisation occurs via an enzyme-substrate reaction in the presence of a colourising reagent which permits microscopical analysis. The biotinylated secondary antibody in the Plus HRP Kit, Mouse binds to mouse primary antibodies. Therefore this kit can detect monoclonal primary antibodies and sera obtained from mice.

Reagents provided: 125 ml Blocking Solution Reagent 1 (ready-to-use)125 ml Biotinylated Secondary Antibody, Mouse Reagent 2 (ready-to-use) 125 ml Streptavidin-HRP-Conjugate Reagent 3 (ready-to-use) Substrate systems recommended (if not included in the kit): Permanent AEC kit, AEC single solution, AEC substrate kit, DAB substrate kit, DAB high contrast kit. Materials required but not suppliedPositive und negative control tissueXylene or suitable substitutesEthanol, distilled H2O3% H2O2 solution Reagents for enzyme digestion or heat pre-treatmentWash buffer Pink PAP Pen Primary antibody (user-defined)Primary antibody diluent Negative control reagentChromogenic substrateCounter stain solutionMounting mediumCover slips

Storage and handling: The solutions should be stored at 2-8°C without further dilution. Please store the reagents in a dark place and do not freeze them. Under these conditions the solutions are stable up to the expiry date indicated on the label. They should not be used after the expiry date. A positive and a negative control have to be carried out in parallel to the test material. If you observe unusual staining or other deviations from the expected results which could possibly be caused by the kit reagents, please contact our technical support

Principle of method: Paraffin-embedded tissue sections are first deparaffinised and rehydrated. Endogenous peroxidase activity in the tissue may cause non-specific staining. This enzyme activity can be blocked by incubation with 3% H2O2-solution (“Peroxide Block”). Background staining caused by unspecific binding of the primary or secondary antibody is minimized by incubation with a protein blocking solution (“Blocking Solution”). This step can be omitted if the primary antibodies are diluted in an appropriate buffer. The next step is incubation with the specific primary antibody. After washing, the biotinylated secondary antibody is applied and incubated. This secondary antibody functions as a link between primary antibody and the streptavidin-horse radish peroxidase-conjugate (“Streptavidin-HRP-Conjugate“). A second washing is followed by the application of this conjugate. It binds to the biotin at the secondary antibody. Any excess of unbound streptavidin-HRP-conjugate is thoroughly washed away after incubation. The addition of the chromogenic substrate starts the enzymatic reaction of the horse radish peroxidase which leads to colour precipitation where the primary antibody is bound. The colour can be observed via a light microscope. The chromogen used determines the colour. The chromogen AEC (included only in kit MON-APP123) leads to the formation of a red-brown product of reaction at the place of the target antigen. The chromogen DAB (included only in kit MON-APP124) forms a dark brown precipitate.

Reagent preparation: Reagents should be at room temperature when used. • Deparaffinise and rehydrate paraffin-embedded tissue sections. • Pre-treatment (optional) with HIER (Heat Induced Epitope Retrieval) or enzymatic digestion. • The tissue sections have to be completely covered with the different reagents in order to avoid drying out. • Preparation of the chromogenic substrate AEC working solution (with MON-APP123 only): Add 2 drops (100 µl) of AEC Concentrate to one bottle of AEC Substrate Buffer and mix thoroughly. • Preparation of the chromogenic substrate DAB working solution (with MON-APP124 only): Add 4 drops (200 µl) of DAB Concentrate to one bottle of DAB Substrate Buffer and mix thoroughly

Procedure: 1. Peroxide Block (3% H2O2 solution) 10 min. 2. Washing with wash buffer 1 x 2 min. 3. Blocking Solution (protein block, Reagent 1) (This step is optional.) 5 min. 4. Washing with wash buffer 1 x 2 min. 5. Primary antibody (optimally diluted) or negative control reagent 30-60 min. 6. Washing with wash buffer 3 x 2 min. 7. Biotinylated Secondary Antibody, Mouse (Reagent 2, yellow) 10-15 min. 8. Washing with wash buffer 3 x 2 min. 9. Streptavidin-HRP-Conjugate (Reagent 3, red) 10-15 min. 10. Washing with wash buffer 3 x 2 min. 11. AEC or DAB (Controlling the colour intensity via light microscope is recommended.) 5-15 min. 12. Stopping the reaction with distilled H2O when the desired colour intensity is attained 13. Counterstaining and blueing 14. Mounting: aqueous with AEC, permanent with DAB or Permanent AEC

Expected results: During the reaction of the substrate with horse radish peroxidase in the presence of a chromogen, a coloured precipitate is formed at the location of the bound primary antibody. This reaction only takes place if the target antigen is existent in the tissue. The chromogen used determines the colour of the precipitate. The analysis is carried out using a light microscope

References: Elias JM Immunohistopathology – A practical Approach to Diagnosis ASCP Press 2003/Nadji M and Morales AR Ann N.Y. Acad Sci 420:134-139, 1983/Omata M et al. Am J Clin Pathol 73: 626-632, 1980

• Artikelnummer: SANMON-APP125
• Hersteller: Sanbio / Monosan
• Hersteller Artikelnummer: MON-APP125
• Verpackungseinheit: 1 kit
• Mengeneinheit: PAK
• Reaktivität: Mouse (Murine)
• Methode: Immunofluorescence, Immunohistochemistry (frozen), Immunohistochemistry (paraffin)