The novel Ebi3-IL-12alpha heterodimeric cytokine has been designated interleukin-35 (IL-35); is a member IL12 family cytokine produced by regulatory T cells (Treg); but not by resting or activated effector T cells (Teff). IL-35 is a heterodimeric protein composed of IL-12α (P35) and IL-27β chains; which are encoded by two separate genes called IL12A and EBI3 (Epstein-Barr-virus-induced gene 3) respectively. Ectopic expression of IL-35 confers regulatory activity on naive T cells; whereas recombinant IL-35 suppresses T-cell proliferation. It identify IL-35 as a novel inhibitory cytokine that may be specifically produced by T(reg) cells and is required for maximal suppressive activity. IL-35 has biological activity and able to expand CD4+CD25+ Treg cells; suppress the proliferation of CD4+CD25- effector cells and inhibit Th17 cell polarization. IL-35 has been shown to be constitutively expressed by regulatory T (Treg) cells CD4(+)CD25(+)Foxp3(+) and suggested to contribute to their suppressive activity. IL-35 is a crucial mediator which provokes CD4+CD25+ T cell proliferation and IL-10 generation; another well-known anti-inflammatory cytokine; along with TGFbeta cytokine. IL-35 is a cytokine can downregulate Th17 cell development and inhibit autoimmune inflammation. It inhibited the differentiation of Th17 cells in vitro. In vivo; IL-35 effectively attenuated established collagen-induced arthritis in mice; with concomitant suppression of IL-17 production but enhanced IFN-gamma synthesis. Thus; IL-35 is a novel anti-inflammatory cytokine suppressing the immune response through the expansion of regulatory T cells and suppression of Th17 cell development.
Product Name:
Human Interleukin-35/IL-35 Recombinant Protein (RPES1037)
Product Code:
RPES1037
Size:
20µg
Species:
Human
Expressed Host:
HEK293 Cells
Synonyms:
CLMF,IL-12A,IL-35,Interleukin-35,NFSK,NKSF1,P35
Accession:
Q14213&P29459
Sequence:
Met 1-Lys 229
Fusion tag:
C-Fc
Activity:
Measured by its ability to bind biotinylated human IL6RB-Fch in a functional ELISA.
Endotoxin:
<1.0 EU per µg of the protein as determined by the LAL method.
Protein Construction:
A DNA sequence encoding the human IL35 complex composed of IL27B subunit (NP_005746.2) (Met 1-Lys 229) and the mature form of human IL12 p35 subunit (P29459) (Arg 23-Ser 219) linked by a polypeptide linker was fused with the Fc region of human IgG1 at the C-terminus.
Purity:
> 85 % as determined by reducing SDS-PAGE.
Mol Mass:
73.4 kDa
Formulation:
Lyophilized from sterile PBS; pH 7.4
Shipping:
This product is provided as lyophilized powder which is shipped with ice packs.
Stability and Storage:
Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
