IL-9 Protein (AA 19-144)

Catalog No. ABIN2666533

This Recombinant IL-9 protein is expressed in Insect Cells.

Quick Overview for IL-9 Protein (AA 19-144) (ABIN2666533)

Target: IL-9 (IL9) (Interleukin 9 (IL9))

Protein Type: Recombinant

Biological Activity: Active

Origin: Mouse

Source: Insect Cells

Application: Flow Cytometry (FACS)

Purity: > 95 % , as determined by Coomassie stained SDS-PAGE.

Product Details

Protein Characteristics: AA 19-144

Sterility: 0.22 μm filtered

Endotoxin Level:

Less than 0.1 EU per μg of protein as determine by the LAL method.

Application Details

Application Notes: Optimal working dilution should be determined by the investigator.

Comment:

Biological activity: Mouse IL-9 induces proliferation of MO7e cells. The ED50 is 0.04 - 0.16 ng/ml, corresponding to a specific activity of 6.5 - 25.0 x 106 units/mg.

Restrictions: For Research Use only

Handling

Format: Liquid

Reconstitution: For maximum results, quick spin vial prior to opening. Stock solutions can also be prepared at 50 - 100 μg/mL in sterile buffer (PBS, HPBS, DPBS, or EBSS) containing carrier protein such as 0.2 - 1 % BSA or HSA and stored in working aliquots at -20 °C to -70 °C.

Buffer: 0.22 μm filtered protein solution is in PBS.

Handling Advice: Avoid repeated freeze/thaw cycles.

Storage: -20 °C

Storage Comment: Unopened vial can be stored between 2°C and 8°C for one month, at -20°C for six months, or at -70°C for one year.

Target Details

Target: IL-9 (IL9) (Interleukin 9 (IL9))

Alternative Name: IL-9

Background: IL-9 was initially identified in mice as a T cell growth factor. Human and murine IL-9 show 56 % amino acid sequence homology. IL-9 is a cytokine that acts as a regulator of a variety of hematopoietic cells, stimulates cell proliferation, and prevents apoptosis. The IL-9 receptor consists of the cytokine-specific IL-9 receptor α-chain (IL-9Rα) and the common γ-chain that is shared by IL-2, IL-4, IL-7, IL-15 and IL-21. IL-9 is expressed by activated Th9, Th17, Treg, and mast cells and appears to play important roles in the development and function of subsets within the CD4+ T cell lineage. IL-9 also inhibits immune responses by enhancing the suppressive properties of Tregs and by recruiting immune suppressive mast cells to sites of inflammation. Genetic studies on a mouse model of asthma demonstrated that this cytokine is a key factor in the pathogenesis of bronchial hyperresponsiveness. In this sense, it has been described that IL-9 and IL-9R expression are increased in lungs of asthmatic patients. In addition, IL-9 promotes mast cell mediated intestinal permeability and plays a role in the development of food allergies. Also, IL-9 has been associated with atopic dermatitis.

Molecular Weight: The 125 amino acid recombinant protein has a predicted molecular mass of approximately 14 kDa. The DTT-reduced protein migrate as multiple bands between 17-25 kDa by SDS-PAGE due to different glycosylation. The predicted N-terminal amino acid is Gln.

Pathways: JAK-STAT Signaling