Invitrogen™ Human CD40 (Soluble) ELISA Kit

Product Code. 15571847

Brand: Invitrogen™ BMS265

Description

Includes

Aluminium pouch(es) with a Microwell Plate coated with monoclonal antibody to human sCD40
Biotin-Conjugate anti-human sCD40 monoclonal antibody
Streptavidin-HRP
Human sCD40 Standard lyophilized, 1ng/mL upon reconstitution
Sample Diluent
Assay Buffer Concentrate 20x (PBS with 1% Tween 20 and 10% BSA)
Wash Buffer Concentrate 20x (PBS with 1% Tween 20)
Substrate Solution (tetramethyl-benzidine)
Stop Solution (1M Phosphoric acid)
Blue-Dye
Green-Dye
Red-Dye
Adhesive Films

ELISA

The Human CD40 ELISA quantitates Hu CD40 in human serum, plasma, amniotic fluid, or cell culture medium. The assay will exclusively recognize both natural and recombinant Hu CD40. Principle of the method The Human CD40 solid-phase sandwich ELISA (enzyme-linked immunosorbent assay) is designed to measure the amount of the target bound between a matched antibody pair. A target-specific antibody has been pre-coated in the wells of the supplied microplate. Samples, standards, or controls are then added into these wells and bind to the immobilized (capture) antibody. The sandwich is formed by the addition of the second (detector) antibody, a substrate solution is added that reacts with the enzyme-antibody-target complex to produce measurable signal. The intensity of this signal is directly proportional to the concentration of target present in the original specimen. Rigorous validation Each manufactured lot of this ELISA kit is quality tested for criteria such as sensitivity, specificity, precision, and lot-to-lot consistency. See manual for more information on validation.

CD40 is a single-chain glycoprotein and a member of the tumor necrosis factor receptor (TNFR) family, exhibiting significant homology to the Hodgkin's disease-associated antigen, CD30. It is expressed by B lymphocytes, follicular dendritic cells, thymic epithelium, and a subset of peripheral T cells, as well as some epithelial cells, carcinomas, and lymphoid dendritic cells. Notably, CD40 is present on all B cells except plasma cells. CD40 plays a crucial role in regulating B cell development and maturation, inducing immunoglobulin isotype-switching, and protecting B cells from surface Ig-induced apoptosis when combined with other signals such as IL-4. It promotes proliferation and is essential for T cell-dependent immunoglobulin class switching, memory B cell development, and germinal center formation. The interaction between CD40 and its ligand CD154 (gp39) on T cells is vital for T-B cell crosstalk, costimulation, and immune regulation. Adaptor protein TNFR2 interacts with CD40, mediating signal transduction, while the AT-hook transcription factor AKNA is reported to regulate CD40 expression, which may be important for homotypic cell interactions. Additionally, the interaction between CD40 and its ligand is necessary for amyloid-beta-induced microglial activation, suggesting a role in the early pathogenesis of Alzheimer's disease. Two alternatively spliced transcript variants encoding distinct isoforms of CD40 have been identified. Diseases associated with CD40 dysfunction include Type 3 Hyper-IgM immunodeficiency and CD40 ligand deficiency, highlighting its importance in immune and inflammatory responses.

Specifications

• Accession Number: P25942
• Assay Range: 7.8-500 pg/mL
• Assay Sensitivity: 1.3 pg/mL
• Content And Storage: Aluminum pouch(es) with a Microplate coated with monoclonal antibody to human sCD40
  Biotin-Conjugate anti-human sCD40 monoclonal antibody
  Streptavidin-HRP
  Human sCD40 Standard lyophilized, 1 ng/mL upon reconstitution
  Sample Diluent
  Assay Buffer Concentrate 20x (PBS with 1% Tween 20 and 10% BSA)
  Wash Buffer Concentrate 20x (PBS with 1% Tween 20)
  Substrate Solution (tetramethyl-benzidine)
  Stop Solution (1M Phosphoric acid)
  Adhesive Films
• Conjugate: HRP
• Immunoassay Kit Format: Sandwich ELISA Kit
• Product Type: ELISA
• Sample Type: Amniotic Fluid, Plasma, Serum, Supernatant
• Target Species: Human
• For Use With (Application): ELISA
• For Use With (Equipment): Absorbance Microplate Reader
• Gene Alias: AI326936; B cell surface antigen CD40; B cell-associated molecule; B-cell surface antigen CD40; Bp50; CD antigen CD40; Cd40; CD40 antigen; CD40 antigen (TNF receptor superfamily member 5); CD40 antigen, TNF receptor superfamily member 5; CD40 molecule; CD40 molecule, TNF receptor superfamily member 5; CD40L receptor; CDw40; GP39; HIGM1; I79_006806; IGM; IMD3; Immunoglobulin M; ImmunoglobulinM; membrane protein CD40; MGC9013; p50; receptor for ligand CD154; sCD40; soluble CD40; T-BAM; T-cell differentiation antigen; Tnfrsf5; TRAP; tumor necrosis factor receptor superfamily member 5; tumor necrosis factor receptor superfamily, member 5AI326936; B cell surface antigen CD40; B cell-associated molecule; B-cell surface antigen CD40; Bp50; CD antigen CD40; Cd40; CD40 antigen; CD40 antigen (TNF receptor superfamily member 5); CD40 antigen, TNF receptor superfamily member 5; CD40 molecule; CD40 molecule, TNF receptor superfamily member 5; CD40L receptor; CDw40; GP39; HIGM1; I79_006806; IGM; IMD3; Immunoglobulin M; ImmunoglobulinM; membrane protein CD40; MGC9013; p50; receptor for ligand CD154; sCD40; soluble CD40; T-BAM; T-cell differentiation antigen; Tnfrsf5; TRAP; tumor necrosis factor receptor superfamily member 5; tumor necrosis factor receptor superfamily, member 5; Bp50; CDW40; TNFRSF5; p50
• Gene ID (Entrez): 958
• Gene Symbol: CD40
• Interassay CV: 7%
• Intraassay CV: 5.5%
• Kit Contents: Pre-coated 96 well plate, Standard, Sample Diluent, Assay Buffer concentrate, Biotinylated Detection Antibody, SAV-HRP, Wash Buffer, Chromogen, Stop Solution, Adhesive Plate Covers, Standard, Sample Diluent, Assay Buffer concentrate, Biotinylated Detection Antibody, SAV-HRP, Wash Buffer, Chromogen, Stop Solution, Adhesive Plate Covers
• Label or Dye: Biotin
• Protein Aliases: B-cell surface antigen CD40, Bp50, CD40L receptor, CDw40
• Quantity: 96 Tests
• Regulatory Status: RUO
• Sample Volume: Amniotic Fluid 50 μL, Plasma 50 μL, Serum 50 μL, Supernatant 50 μL
• Storage Requirements: 2-8°C
• Synonym: B-cell associated molecule CD40, Bp 50, CDw40
• Target: CD40
• Test Time: 1 hr 20 min
• Total Assay Time: 3 hr 10 min