Flow cytometric analysis of human PBMC (human peripheral blood mononuclear cell) labelling CD8α antibody at 1/2000 (0.1 μg) dilution (Right) compared with a Mouse monoclonal IgG isotype control (Left). Goat Anti - Mouse IgG Alexa Fluor® 488 was used as the secondary antibody.
Then cells were stained with CD4 (Alexa Fluor® 647) separately. Events were gated on viable lymphocytes.
S-RMab® CD8α Mouse mAb (SDT-1036-34)
S-RMab® CD8α Mouse mAb (SDT-1036-34)
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Product Details
Product Details
Product Specification
| Host | Mouse |
| Antigen | CD8α |
| Synonyms | T-lymphocyte differentiation antigen T8/Leu-2, T-cell surface glycoprotein CD8 alpha chain, MAL, CD8a |
| Immunogen | Recombinant Protein |
| Location | Cell membrane |
| Accession | P01732 |
| Clone Number | SDT-1036-34 |
| Antibody Type | Mouse mAb |
| Isotype | IgG1,k |
| Application | IHC-P, ICC, FCM, IF |
| Reactivity | Hu |
| Purification | Protein G |
| Concentration | 2 mg/ml |
| Conjugation | Unconjugated |
| Physical Appearance | Liquid |
| Storage Buffer | PBS, 40% Glycerol, 0.05% BSA, 0.03% Proclin 300 |
| Stability & Storage | 12 months from date of receipt / reconstitution, -20 °C as supplied |
Dilution
| application | dilution | species |
| IHC-P | 1:1000 | |
| ICC | 1:500 | |
| IF | 1:1000 | |
| FCM | 1:2000 |
Background
CD8A encodes the CD8 alpha chain of the αβT cells, proposed as a quantifiable indicator for CD8+ CTL recruitment or activity assessments and a robust biomarker for responses to anti-PD-1/PD-L1 therapy. In NK-cells, the presence of CD8A homodimers at the cell surface provides a survival mechanism allowing conjugation and lysis of multiple target cells. CD8A homodimer molecules also promote the survival and differentiation of activated lymphocytes into memory CD8 T-cells.
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FC
Immunohistochemistry
IHC shows positive staining in paraffin-embedded human spleen. Anti-CD8α antibody was used at 1/1000 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human thymus. Anti-CD8α antibody was used at 1/1000 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human tonsil. Anti-CD8α antibody was used at 1/1000 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human stomach. Anti-CD8α antibody was used at 1/1000 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human Hodgkin’s lymphoma. Anti-CD8α antibody was used at 1/1000 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human anaplastic large cell lymphoma. Anti-CD8α antibody was used at 1/1000 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
Negative control: IHC shows negative staining in paraffin-embedded human diffuse large B-cell lymphoma (few T cell staining). Anti-CD8α antibody was used at 1/1000 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
Immunocytochemistry
ICC shows positive staining in PBMC cells. Anti-CD8α antibody was used at 1/500 dilution (Green) and incubated overnight at 4°C. Goat polyclonal Antibody to Mouse IgG - H&L (Alexa Fluor® 488) was used as secondary antibody at 1/1000 dilution. The cells were fixed with 4% PFA and permeabilized with 0.1% PBS-Triton X-100. Nuclei were counterstained with DAPI (Blue). Co staining with CD3 epsilon (S0B2132, Red).
Immunofluorescence
IF shows positive staining in paraffin-embedded human tonsil. Anti-CD8α antibody was used at 1/1000 dilution (Green) and incubated overnight at 4°C. Goat polyclonal Antibody to Mouse IgG - H&L (Alexa Fluor® 488) was used as secondary antibody at 1/1000 dilution. Nuclei were counterstained with DAPI (Blue). Co staining with CD3 epsilon (S0B2132, Red). Heat mediated antigen retrieval with EDTA buffer pH9.0 was performed before commencing with IF staining protocol.
