Rat Interleukin 9 Receptor (IL9R) Protein

Background

The interleukin-9 receptor (IL9R) is a key component of the immune system, primarily involved in mediating the biological activities of interleukin-9 (IL-9), a cytokine secreted by T helper 2 (Th2) cells, mast cells, and a subset of T helper cells known as Th9 cells. IL-9 is known for its pleiotropic effects, influencing various cell types including mast cells, T cells, B cells, and epithelial cells. It is particularly important in immune responses, inflammatory processes, and allergic reactions. IL9R, through binding IL-9, initiates signaling cascades that play critical roles in the regulation of cell survival, proliferation, and differentiation in immune responses. The IL9R gene is located on the X chromosome (Xq28) in humans, which makes certain IL9R-related mutations have potential X-linked patterns of inheritance. Notably, IL9R signaling is involved in allergic diseases, asthma, and certain cancers. Additionally, IL-9 and IL9R have been implicated in autoimmune diseases and responses to infections, such as helminth infections. Due to its versatile role in immunity, IL9R is an area of interest for therapeutic strategies aiming to modulate immune responses, particularly in allergy and asthma, and cancer treatment.