Abcam, ab273161, Human galectin-9 ELISA kit (Gal-9)

Size: 1 x 96Tests
Human galectin-9 ELISA kit (Gal-9) is a Sandwich (quantitative) ELISA for the measurement of Human galectin-9 (Gal-9) in Human in Cell Culture Media, Biofluids samples.
Key facts
Detection method:Colorimetric,
Sample types:Cell culture supernatant, Plasma, Serum,
Reacts with:Human,
Assay type:Sandwich (quantitative),
Sensitivity:= 8 pg/mL,
Range:15.6 - 500 pg/mL,
Assay time:3h 45m,
Assay Platform:Microplate (12 x 8 well strips)

Product details:
Human Galectin-9 ELISA kit (Gal-9) (ab273161) is a solid phase sandwich ELISA for the
in-vitro
qualitative and quantitative determination of Galectin-9 in supernatants, buffered solutions or serum and plasma samples. This assay will recognise both natural and recombinant human Galectin-9.
A capture antibody highly specific for Galectin-9 has been coated to the wells of the microtiter strip plate provided during manufacture. Binding of Galectin-9 in samples and known standards to the capture antibodies is completed and then any excess unbound analyte is removed.
During the next incubation period the binding of the biotinylated anti-Galectin-9 secondary antibody to the analyte occurs. Any excess unbound secondary antibody is then removed.
The HRP conjugate solution is then added to every well including the zero wells, following incubation excess conjugate is removed by careful washing.
A chromogen substrate is added to the wells resulting in the progressive development of a blue coloured complex with the conjugate. The colour development is then stopped by the addition of acid turning the resultant final product yellow. The intensity of the produced coloured complex is directly proportional to the concentration of Galectin-9 present in the samples and standards.
The absorbance of the colour complex is then measured and the generated OD values for each standard are plotted against expected concentration forming a standard curve. This standard curve can then be used to accurately determine the concentration of Galectin-9 in any sample tested.

Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions-+4°C, Storage information-+4°C

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Galectin-9 also known as Gal-9 or LGALS9 is a β-galactoside-binding lectin with a molecular mass of around 40 kDa. It shows expression in various tissues including the thymus spleen and liver. The galectin-9 protein is involved in cell-cell and cell-matrix interactions where it binds to glycoproteins and glycolipids. Researchers commonly use methods like Galectin-9 ELISA to measure its levels in different biological samples.
Biological function summary
Galectins like galectin-9 play essential roles in regulating diverse immune responses. Galectin-9 acts within the immune system by modulating inflammation and apoptosis. It acts as both a pro-apoptotic factor for T cells and a protein mediator in innate immune functions. Galectin-9 proteins can form complexes with other lectins and cell surface receptors contributing to cellular signaling processes.
Pathways
Galectin-9 is integral to the immune system's functional networks. It participates in the T-cell regulation pathways and the innate immunity pathways. In these pathways it interacts with other proteins like TIM-3 which mediates T-cell apoptosis and contributes to immune tolerance. These interaction networks play important roles in maintaining the body's immune homeostasis.
Galectin-9 has associations with autoimmune diseases and cancer. Its regulatory effects on T cells connect it to autoimmune conditions where abnormal T-cell activation occurs. In cancer the alteration in galectin-9 expression levels affects tumor immunity. The interaction of galectin-9 with other proteins like TIM-3 is important in cancer progression making it a target of interest for therapeutic interventions.