Key features and details | |
Cat. No. | MABL-851 |
Name | Anti-CD28 mAbs |
Clone No. | AFD-15E 8 |
From | Recombinant Antibody |
Isotype | Engineer antibody |
Application | ELISA, FC |
Species Reactivity | Human |
Basic Information | |
Specificity | This antibody binds human CD28, which is found on a sub-population of T cells and activated B cells. The antibody does not react with B cells, granulocytes or monocytes. CD28 is involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival. |
Alternative Name | T-cell-specific surface glycoprotein CD28; TP44 |
UniProt | P10747 |
Immunogen | The original mouse antibody was generated by immunizing mice with human T lymphocytes. |
Application Notes | This antibody works independently of TcR/CD3 and activation of protein kinase C (PKC) for activation of T cells and nehances cytokine secretion (PMID: 1647959). This antibody is capable of stimulating T cells in combination with either murine OKT3 antibody or CDR-mutated OKT3 Fab variants. It was found that cross-linking of specific tumor antigens with the T-cell-associated CD3 and CD28 antigens can increase IL-2 secretion, proliferation and antigen-specific cytotoxicity in resting T cells. This cross- linking can be achieved effectively by bispecific monoclonal antibodies (BiMAb) with specificity for both the tumor antigen and CD3 or CD28 antigen. A combination of bispecific antibodies BiMAb OKT3/HRS-3 with reactivity against both CD3 and Hodgkin's-lymphoma-associated CD30 antigen and BiMAb 15E8/HRS-3 with reactivity to both CD28 and CD30 antigen was able to activate resting T cells, represented by Jurkat cells (CD3+/CD28+) to produce IL-2 (PMID: 7686889). |
Antibody First Published | Van Lier et al. T cell receptor/CD3 and CD28 use distinct intracellular signaling pathways/ Eur J Immunol. 1991 Jul;21(7):1775-8. PMID:1647959 |
Note on publication | This paper investigates whether stimulation of T cells by CD28 is dependent on the activation of protein kinase C (PKC). |
COA Information （For reference only, actual COA shall prevail） | |
Size | 100 μg Purified antibody. |
Concentration | 1 mg/ml. |
Purification | Protein A affinity purified |
Buffer | PBS with 0.02% Proclin 300. |
Concentration | 1 mg/ml. |
Storage Recommendation | Store at 4⁰C for up to 3 months. For longer storage, aliquot and store at - 20⁰C. |
