IL-7 (human) (monomeric):Fc-KIH (human) (rec.)
|Synonyms||IL-7 (human) (monomeric):Fc Knobs-into-Holes (human) (rec.); Interleukin-7; Lymphopoietin 1; LP1|
|Source/Host||HEK 293 cells|
Human IL-7 (aa 26-177) is fused at the C-terminus to the Fc portion of human IgG1 (Knobs-into-Holes technology) (see reference: J.B. Ridgway, et al.; Protein Eng. 9, 617 (1996)).
Binds to human IL-7R. Should also bind to mouse IL-7R (not tested).
|MW||~60kDa and 28kDa (SDS-PAGE)|
|Endotoxin Content||<0.01EU/μg protein (LAL test).|
|Concentration||After reconstitution: 1mg/ml|
|Reconstitution||Reconstitute with 50μl endotoxin-free water.|
|Formulation||Lyophilized. Contains PBS.|
|Protein Negative Control|
|Other Product Data||
Uniprot link P13232: IL-7 (human)
|Shipping and Handling|
|Short Term Storage||+4°C|
|Long Term Storage||-20°C|
After reconstitution, prepare aliquots and store at -20°C.
Avoid freeze/thaw cycles.
Centrifuge lyophilized vial before opening and reconstitution.
PBS containing at least 0.1% BSA should be used for further dilutions.
Stable for at least 6 months after receipt when stored at -20°C.
Working aliquots are stable for up to 3 months when stored at -20°C.
|Product Specification Sheet|
Interleukin-7 (IL-7) is a hematopoietic growth factor and a member of the IL-7/IL-9 family, which is produced by fetal liver cells, stromal cells in the bone marrow (BM), thymus and other epithelial cells, including keratinocytes and enterocytes. The receptor of IL-7, IL-7R, is a heterodimeric complex consisting of the α-chain (CD127) and the common cytokine receptor γ-chain, shared with the receptors for IL-2, IL-4, IL-7, IL-9, IL-15 and IL-21, and expressed in a variety of cells. IL-7 has a critical developmental function at every stage of T cell development, for both αβ and γδ lineages, and for the development and survival of naive T cells as well as generation and maintenance of CD4 and CD8 memory. IL-7 is also essential for the development and maintenance of the new ILCs. IL-7 is important throughout hematopoiesis, facilitating key lineage fate decisions. IL-7 is thought to support aberrant immune activity in autoimmune diseases such as diabetes and multiple sclerosis and in chronic inflammatory diseases such as rheumatoid arthritis, ankylosing spondylitis and inflammatory bowel disease. IL-7 contributes to leukemia development in vivo and also stimulates multiple immune-mediated mechanisms that contribute to the eradication of tumors.
The protein IL-7 (human) (monomeric):Fc-KIH (human) (rec.) is produced by using two different vectors, one encoding for the IL-7 (human):Fc Knobs sequence (synthesizing a protein of 60kDa) and one encoding for the Fc Holes sequence (synthesizing a protein of 28kDa). Both vectors transfected into HEK293 cells produce both Fc molecules (Knobs-into-Holes technology; J.B. Ridgway, et al.; Protein Eng. 9, 617 (1996)) required for dimerization of the Fc moieties and for secretion of the final protein IL-7 (human) (monomeric):Fc-KIH (human) (rec.).