产品中心 ELISA试剂盒 OneStep ELISA 试剂盒
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抗原名称
TNF-α免疫原
Recombinant Protein抗体类型
Recombinant mAb反应种属 ?
Hu纯化方式
Protein A储存条件
2 to 8 °C as supplied.
Precision
Intra-assay: 6.8%;
Inter-assay: 8.9%
Sample type
Cell culture supernatant, Serum, PlasmAssay type
Sandwich (quantitative)Sensitivity
8.763 pg/mlRange
21.9 pg/mL – 1404.6 pg/mLRecovery
Cell culture supernatant: 95%
Serum: 103%
Plasm: 108%Assay time
60 minutesSpecies reactivity
HumanNIBSC convert
The dose response curve of the International Standard (12/154) parallels the OneStep standard curve. To convert sample values obtained with the kit to approximate NIBSC (12/154) units, use the following equation: NIBSC (12/154) approximate value (IU/mL) = 0.43 x OneStep Human TNF-α value (pg/mL).
TNF alpha is produced by various types of cells including macrophages, monocytes, neutrophils, T cells, and NK-cells. TNF-alpha is critical for normal immune response, abnormal secretion TNF alpha activates synovial fibroblasts, keratinocytes, osteoclasts, induces rheumatoid arthritis, inflammatory bowel disease, psoriatic arthritis (PsA), and noninfectious uveitis (NIU). TNF alpha positively regulates endogenous TNF-α expression levels independently of Pgp efflux activity, induces IHF cells proliferation. TNF alpha in tissues may promote cancer growth, invasion, and metastasis. Besides, TNF alpha stimulates NF-κB pathway via TNFR2 and anti-TNF-α MAb significantly suppresses the tumor development in colitis-associated cancer (CAC) mouse. TNF alpha as a proneurogenic factor activates the SAPK/JNK pathway and can facilitate neuronal replacement and brain repair in response to brain injury.
ELISA
Standard curve
Example of Human TNF-α standard curve in Assay Diluent #1.Linearity
The concentrations of TNF-α were measured and interpolated from the target standard curves and corrected for sample dilution.
Sample is undiluted samples are as follows: human PBMC cells stimulated with 10ng/ml PMA and 500ng/mL lonomycin Calcium Salt for 24 hours (25%). The interpolated dilution factor corrected values are plotted. The mean target concentration was determined to be 13.99 ng/mL in stimulated human PBMC supernatant.Protocol Diagram
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