Description
Key facts
Detection method:Colorimetric,
Sample types:Plasma, Cell culture supernatant,
Reacts with:Human,
Assay type:Sandwich (quantitative),
Sensitivity:< 0.1 ng/mL,
Range:0.04 - 30 ng/mL,
Assay Platform:Microplate
Product details:
Abcam's IL-9 Human ELISA (Enzyme-Linked Immunosorbent Assay) kit is an
in vitro
enzyme-linked immunosorbent assay for the quantitative measurement of Human IL-9 in plasma and cell culture supernatants. (Human IL-9 concentration is pretty low in normal plasma, it may not be detected in this assay).
This assay employs an antibody specific for Human IL-9 coated on a 96-well plate. Standards and samples are pipetted into the wells and IL-9 present in a sample is bound to the wells by the immobilized antibody. The wells are washed and biotinylated anti-Human IL-9 antibody is added. After washing away unbound biotinylated antibody, HRP-conjugated streptavidin is pipetted to the wells. The wells are again washed, a TMB substrate solution is added to the wells and color develops in proportion to the amount of IL-9 bound. The Stop Solution changes the color from blue to yellow, and the intensity of the color is measured at 450 nm.
We have not been able to detect endogenous Human IL-9 in normal serum with ab100577, only in serum spiked with Human IL-9.
Optimization may be required with urine samples.
The standard is affinity purified.
Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions--20°C, Appropriate long-term storage conditions--20°C, Storage information--20°C
Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Interleukin-9 (IL-9) sometimes known as a T-cell growth factor is a cytokine with a molecular mass of approximately 14-19 kDa. It is primarily expressed by T helper cells particularly Th2 and Th9 cells. IL-9 comes from the IL-9 gene and plays a significant role in the immune system by affecting various cell types such as mast cells B cells and epithelial cells. Researchers first identified it in the late 1980s and it has continued to be an area of interest due to its diverse functions.
Biological function summary
IL-9 influences immune responses and is important for various processes including cell proliferation and survival. IL-9 activates mast cells which play role in allergy response. It also affects the growth and differentiation of T cells and enhances the function of dendritic cells. IL-9 operates individually and not as part of a larger complex but works closely with its receptor IL-9R to initiate downstream signaling events.
Pathways
Cytokine signaling pathways and JAK-STAT signaling pathways integrate IL-9's function in the immune system. IL-9 activates the JAK-STAT pathway particularly involving proteins like JAK1 and STATs to relay signals that promote immune cell growth and survival. This cytokine also interlinks with other cytokines such as IL-4 and IL-13 playing role in immune regulation and inflammatory responses.
IL-9 shows strong correlation with asthma and certain types of cancers particularly Hodgkin's lymphoma. In asthma overproduction of IL-9 can lead to increased mucus production and airway hyperresponsiveness. This relationship makes it a potential target for blocking therapies in asthma treatment. Higher levels of IL-9 correlate with poorer prognosis in some cancers indicating its potential role in tumor growth and immune evasion possibly interacting with IL-6 in such conditions.
