Cat Number: 90147ES

IL-7-2

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Genus

Mouse

Source

E.coli

Synonyms

Interleukin-7,IL-7,LP-1, pre-B cell factor;IL7

Description

Interleukin-7 (IL-7) is required for the development and survival of T cells and plays a critical role in modulating T-cell homeostasis.IL-7 is a limiting resource under normal conditions, but it accumulates during lymphopaenia, leading to increased T cell proliferation.Human IL-7 shares approximately 60-63% aa sequence identity with mouse, rat, canine and feline IL-7, and 72-76% with equine, bovine, ovine, porcine, feline and canine IL-7. IL-7 as an immunotherapy agent has been examinedin many human clinical trials for various malignancies and during HIV infection. Furthermore, IL-7 induces the arming of effector functions and enhances the sensitivity of MAIT cells.

Molecular Weight

Approximately 14.9 kDa

AA sequence

ECHIKDKEGK AYESVLMISI DELDKMTGTD SNCPNNEPNF FRKHVCDDTK EAAFLNRAAR KLKQFLKMNI SEEFNVHLLT VSQGTQTLVN CTSKEEKNVK EQKKNDACFL KRLLREIKTC WNKILKGSI

Appearance

Sterile Filtered White lyophilized (freeze-dried) powder.

Purity

> 96% by SDS-PAGE and HPLC analyses.

Biological Activity

The ED50 as determined by a cell proliferation assay using murine 2E8 cells is less than 0.2 ng/mL, corresponding to a specific activity of > 5.0 × 106 IU/mg. Fully biologically active when compared to standard.

Endotoxin

< 1.0 EU per 1μg of the protein by the LAL method.

Formulation

Lyophilized from a 0.2 µm filtered concentrated solution in PBS, pH 7.4, 2% trehalose.

Reconstitution

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20°C. Further dilutions should be made in appropriate buffered solutions.

Note

2, 10, 50, 100, 500μg