Lyophilized recombinant human Interlerkin 9 (IL-9) remains stable up to 6 months at -80 °C from date of receipt. Upon reconstitution, rhIL-9 should be stable up to 1 week at 4 °C or up to 2 months at -20 °C.
Interleukin 9, also known as IL9, is a cytokine (cell signalling molecule) belonging to the group of interleukins. The protein encoded by this gene is a cytokine produced by T-cells and specifically by CD4+ helper cells that acts as a regulator of a variety of hematopoietic cells. This cytokine stimulates cell proliferation and prevents apoptosis. It functions through the interleukin-9 receptor (IL9R), which activates different signal transducer and activator (STAT) proteins and thus connects this cytokine to various biological processes. The gene encoding this cytokine has been identified as a candidate gene for asthma. Genetic studies on a mouse model of asthma demonstrated that this cytokine is a determining factor in the pathogenesis of bronchial hyperresponsiveness. Synonyms: p40 cytokine, T-cell growth factor p40