Overview
CD40 is a costimulatory molecule of the TNF receptor superfamily and is expressed on many cell types, such as B cells, monocytes/macrophages, dendritic cells, endothelial cells, fibroblasts or vascular smooth muscle cells. Interaction of CD40 and its ligand CD154 (CD40L) is required for the generation of antibody responses to T-dependent antigens as well as for the development of germinal centers and memory B cells. In monocytes/macrophages CD40 engagement induces production of pro-inflammatory cytokines and chemokines. CD40-CD154 interactions are also critical for development of CD4 T cell-dependent effector functions. CD40 links innate and adaptive immune responses to bacterial stimuli and serves as an important regulator affecting functions of other costimulatory molecules.
Specificity:
The mouse monoclonal antibody HB14 recognizes an extracellular epitope of CD40 (BP50), a 48 kDa type I single chain transmembrane glycoprotein expressed on normal and neoplastic B cells, but not on terminally differentiated plasma cells. CD40 antigen is also present on Hodgkin's and Reed-Sternberg cells, follicular dendritic cells, some macrophages, basal epithelial cells and endothelial cells.
Antigen
CD40
Clone
HB14
Species Reactivity
Non-human primates, Human
Negative Species
N/A
Isotype
Mouse IgG1 kappa
Immunogen
human B lymphoblastoid cell lines
Application
FC (QC tested)
Regulatory status
RUO
Concentration
N/A
Format
PE
Storage / Stability
Store at 2-8°C. Protect from prolonged exposure to light. Do not freeze.
Storage Buffer
Stabilizing phosphate buffered saline (PBS), pH 7.4, 15 mM sodium azide