Regulatory Status:RUO
Alternative:STAT4
Regulatory Status:
Alternative:
Detection Method:
ELISA
Assay Type:
Sandwich
Detection Range:
0.31-20ng/mL
Sensitivity:
0.12ng/mL
Specificity:
This kit recognizes Human STAT4 in samples. No significant cross-reactivity or interference between Human STAT4 and analogues was observed.
Sample Type:
Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Research Area:
Signal Transduction
Signal transducer and activator of transcription 4 (STAT4) is a transcription factor belonging to the STAT protein family, composed of STAT1, STAT2, STAT3, STAT4, STAT5A, STAT5B, STAT6. STAT Proteins are key activators of gene transcription which bind to DNA in response to cytokine gradient.STAT Proteins are a common part of Janus kinase (JAK)- signalling pathways, activated by cytokines.STAT4 is required for the development of Th1 cells from naive CD4+ T cells and IFN-γ production in response to IL-12. There are two known STAT4 transcripts, STAT4α and STAT4β, differing in the levels of interferon-gamma (IFN-γ )production downstream.
As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, wash technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data are provided below for reference only.
Concentration (ng/mL) | 20 | 10 | 5 | 2.5 | 1.25 | 0.62 | 0.31 | 0 |
OD | 2.31 | 1.65 | 1.06 | 0.69 | 0.44 | 0.32 | 0.23 | 0.1 |
Corrected OD | 2.21 | 1.55 | 0.96 | 0.59 | 0.34 | 0.22 | 0.13 | - |
Intra-assay Precision (Precision within an assay):CV% < 10%; Inter-assay Precision (Precision between assays):CV% < 10%
The recovery of Human STAT4 spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.
Sample Type | Range(%) | Average Recovery(%) |
Tissue Homogenates(n=8) | 84-101 | 96 |
Cell Lysates(n=8) | 92-106 | 102 |
Samples were spiked with high concentrations of Human STAT4 and diluted with Universal Diluent to produce samples with values within the range of the assay.
Tissue Homogenates(n=4) | Cell Lysates(n=4) | ||
1 : 2 | Range (%) | 84-95 | 88-96 |
Average (%) | 91 | 93 | |
1 : 4 | Range (%) | 89-103 | 87-108 |
Average (%) | 94 | 98 |
CATALOGUE