Recombinant Mouse IL-7 (carrier-free)

Mouse IL-7 was initially described as a pre B-cell grow factor expressed in bone marrow stromal cells. IL-7 is essential for normal murine B cell development, and plays a key role in regulating the homeostasis and function of the T-cells. The binding of IL-7 to its receptor induces dimerization of IL-7Ra and the common gamma chain (gc) which leads to activation of receptor associated tyrosine Janus kinases JAK1 (IL-7R) and JAK3 (gammac). The activated JAK proteins in turn phosphorylate specific residues on the IL-7R creating docking sites for signaling molecules such as STAT5 and to a lesser extent STAT1 and STAT3. In adult mice, IL-7/IL-7R signaling up regulates expression of early B cell factor (EBF), and EBF in turn regulates expression of B cell-specific genes required for the transition from lymphoid progenitor to pro-B cells. Besides, IL-7 plays a role in the development of secondary lymphoid tissues. IL-7 is necessary to specify CD8 lineage differentiation during CD4/CD8 cell fate choice in the thymus by inducing expression of the transcription factor Runx3. IL-7 induces anti-apoptotic factors Bcl2 and Bcl-xL and inhibiting pro-apoptotic factors such as Bad and Bax. In this fashion, IL-7 induces cell activation, survival, and proliferation of T lymphocytes. In addition, IL-7 controls T-cell size and metabolism through the activation of PI3 kinase-dependent pathways and regulation of glucose metabolism. IL-7 also controls T cell–dendritic cell interactions that are essential for both T-cell homeostasis and activation in vivo. CD4 T cell lymphopenia increases the expression of circulating IL-7, and TGFb induces IL-7 downregulation.

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SPECIFICATIONS

Catalog Number

577802

Size

10 microg

Gene Id

16196

Storage Temp

-20 C or -70 C

Shipping Temp

Blue Ice

Storage Buffer

Unopened vial can be stored at 4C for three months or from -20C to -70C for six months. For maximum results, quick spin vial prior to opening. Stock solutions should be prepared at no less than 10 microg/mL in sterile buffer containing carrier protein such as 1% BSA or HSA or 10% FBS. After dilution, the cytokine can be stored at 4C for one month or from -20C to -70C for up to 3 months. Avoid repeated freeze/thaw cycles.

Alternative Names

Interleukin-7, Lymphopoietin-1 (LP-1), Pre-B cell growth factor, Thymocyte growth factor

Regulatory Status

RUO