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Invitrogen
Human CD40 (Soluble) ELISA Kit
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产品规格
检测灵敏度
1.3 pg/mL
测定范围
7.8-500 pg/mL
检测样本类型/体积
{Amniotic Fluid=50 µL, Plasma=50 µL, Serum=50 µL, Supernatant=50 µL}
手工操作时间
1 hr 20 min
总时间
3 hr 10 min
均相（无需洗涤）
No
批间差异
7%
批内差异
5.5%
检测仪器
Absorbance Microplate Reader
产品规格
96 Tests
产品成分
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
运输条件
Wet ice
储存
2-8°C
蛋白名称
CD40
Target sub-specificity
Soluble
均相（无需洗涤）
Human
检测试剂盒格式
Sandwich ELISA Kit
检测抗体结合物
Biotin
标签或染料
HRP
关于本试剂盒
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.
原理方法
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.
严格验证
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.
靶标信息
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.
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生物信息学
基因别名 : Bp50, CD40, CDW40, p50, TNFRSF5
基因ID : (Human) 958
基因符号 : CD40
蛋白别名 : B cell surface antigen CD40, B cell-associated molecule, B-cell surface antigen CD40, Bp50, CD40L receptor, CDw40, CD antigen CD40, Immunoglobulin M, ImmunoglobulinM, MGC9013, sCD40, soluble CD40, CD40, CD40 molecule, TNF receptor superfamily member 5, Tumor necrosis factor receptor superfamily member 5
UniProt ID (Human) P25942
