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Cleaved Caspase-3 Antibody Staining Protocol for Immunohistochemistry
Description: Caspase-3 (CPP-32, Apoptain, Yama, SCA-1) is one of the key executioners of apoptosis, as it is either partially or totally responsible for the proteolytic cleavage of many key proteins such as the nuclear enzyme poly (ADP-ribose) polymerase (PARP). Activation of caspase-3 requires proteolytic processing of its inactive zymogen into activated p17 and p12 fragments. Cleavage of caspase-3 requires aspartic acid at the P1 position. Cleaved Caspase-3 (Asp175) (5A1) Rabbit Monoclonal Antibody detects endogenous levels of the large fragment (17/19 kDa) of activated caspase-3 resulting from cleavage adjacent to Asp175. This antibody does not recognize full length caspase-3 or other cleaved caspases.
Primary Antibody
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Name: Cleaved Caspase-3 Antibody |
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Clone: Rabbit anti-Cleaved Caspase-3 |
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Supplier: Cell Signaling Technology |
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Catalog Number: 9661 |
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Dilution: 1:100 using IHC-TekTM Antibody Diluent (Cat# IW-1000 or IW-1001) to reduce background and unspecific staining and serum blocking step is NOT needed. |
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Incubation Time/Temp: 60min/room temperature |
Antigen Retrieval
| Device: IHC-TekTM Epitope Retrieval Steamer Set (Cat# IW-1102) |
| Buffer/pH value: IHC-TekTM Epitope Retrieval Solution (Cat# IW-1100) |
| Heat/Cool Temperature: 95-100 ºC/room temperature |
| Heat/Cool Time: 20 minutes/20 minutes |
Detection Methods
| Standard Method: ABC Method or LSAB Method |
| Enhanced Method: Polymeric Methods |
Chromogen Substrate
| Reagent: DAB |
| Incubation Time/Temperature: 1-3 minutes/room temperature |
Counterstain
| Reagent: Gill's Hematoxylin or Mayer's Hematoxylin |
| Staining Time: 30 seconds |
Results:
| Staining Pattern: Cytoplasmic/nuclear |
| Images: Search image |
Additional Information:
| Tissue Type: Mouse embryo, pancreas |
| Fixation: Formalin fixed paraffin sections, or acetone fixed frozen sections |
| Positive Control: Mouse embryo, pancreas |
| Negative Control: Omit primary antibody, isotype control or absorption control |
| Blocking: 2-5% normal serum to reduce unspecific background staining; 0.5-3% H2O2 to block endogenous peroxidase activity; avidin/biotin to block endogenous biotin activity if necessary |
Notes:
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There is no need to perform antigen retrieval for acetone fixed frozen sections |
References: