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  6. IL-12 alpha Protein, Rhesus Macaque (HEK293, Fc)

IL-12 alpha Protein, Rhesus Macaque (HEK293, Fc)

Cat. No.: HY-P77401
Handling Instructions

Interleukin-12 subunit alpha (IL-12A; IL-12p35), an immune-suppressive cytokine, encodes a subunit of the cytokine IL-12 that acts on T and natural killer cells, and has a broad array of biological activities. IL-12A heterodimerizes with IL-12B to form the IL-12 cytokine or with EBI3/IL27B to form the IL-35 cytokine. IL-12 alpha Protein, Rhesus Macaque (HEK293, Fc) is produced in HEK293 cells with a C-Terminal Fc-tag . It consists of IL-12A (M1-S219).

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Description

Interleukin-12 subunit alpha (IL-12A; IL-12p35), an immune-suppressive cytokine, encodes a subunit of the cytokine IL-12 that acts on T and natural killer cells, and has a broad array of biological activities. IL-12A heterodimerizes with IL-12B to form the IL-12 cytokine or with EBI3/IL27B to form the IL-35 cytokine[1][2]. IL-12 alpha Protein, Rhesus Macaque (HEK293, Fc) is produced in HEK293 cells with a C-Terminal Fc-tag . It consists of IL-12A (M1-S219).

Background

Interleukin-12 subunit alpha (IL-12A; IL-12p35), an immune-suppressive cytokine, encodes a subunit of the cytokine IL-12 that acts on T and natural killer cells, and has a broad array of biological activities. IL-12A is a disulfide-linked heterodimer composed of the 35-kD subunit encoded by this gene, and a 40-kD subunit that is a member of the cytokine receptor family. IL-12 is primarily produced by professional antigen-presenting cells (APCs) such as B-cells and dendritic cells (DCs) as well as macrophages and granulocytes, induces the production of IFN-gamma, favors the differentiation of Th1 cells and is an important link between innate resistance and adaptive immunity[1][2].
The amino acid sequence of human IL-12A protein has low homology between mouse IL-12A protein. While, human IL-12A shares 94% aa sequence identity with Rhesus Macaque IL-12A protein.
IL-12 family cytokines are pleiotropic immunological playmakers that coordinate innate and adaptive immune responses mainly via regulation of T-cell populations. The four core members of the Interleukin-12 (IL-12) family of cytokines, IL-12, IL-23, IL-27 and IL-35 are heterodimers which share α-cytokine subunits (IL-12p35 (IL-12A), IL-23p19, and IL-27p28) and β-cytokine subunits (IL-12p40, Ebi3). The subunits are each encoded by separate chromosomes and their expression is regulated independently. Among them, the IL-12A subunit has immunoregulatory functions hitherto attributed to IL-35. Pairing of the α-subunits, IL-12A or IL-23p19 with IL-12p40, gives rise to the two pro-inflammatory members IL-12 and IL-23, respectively, whereas the two immunosuppressive members of the family, IL-27 and IL-35, derive from pairing of IL-27p28 or IL-12A with Ebi3[1][2].
IL-12A suppresses lymphocyte proliferation, induces expansion of IL-10-expressing and IL-35-expressing B cells and ameliorates autoimmune uveitis in mice by antagonizing pathogenic Th17 responses. IL-12A-mediated expansion of Treg and Breg cells and its amelioration of experimental autoimmune encephalomyelitis (EAE) correlated with inhibition of cytokine-induced activation of STAT1/STAT3 pathways. IL-12A may be utilized for in vivo expansion of Tregs and Bregs cells and autologous Tregs and Bregs cell immunotherapy[1][2].

In Vitro

IL-12 Protein, Human (1 ng/mL; for 5 days) results in the induction of IFN-γ secretion by Dermatophagoides pteronyssinus group 1 antigen (Der p 1)-specific CD4+ T cells in dendritic cell (DC)-T cell cocultures, whereas their production of IL-5 is not inhibited[3].

In Vivo

IL-12 Protein, Rhesus Macaque (1 and 2 μg/kg; s.c.; twice a week; for 8 weeks) significantly protects macaques from SIVmac251-induced disease. The higher IL-12 dose leads to lower plasma viral loads and markedly lower peripheral blood mononuclear cell and lymph node proviral DNA loads[4].

Species

Rhesus Macaque

Source

HEK293

Tag

C-hFc

Accession

P48091 (R23-S219)

Gene ID
Molecular Construction
N-term
IL-12α (R23-S219)
Accession # P48091
hFc
C-term
Synonyms
Interleukin-12 subunit alpha; IL-12A; CLMF p35; IL-12 subunit p35; IL12A
Molecular Weight

Approximately 49.6 kDa.

Purity

Greater than 90% as determined by reducing SDS-PAGE

Endotoxin Level

<1 EU/μg, determined by LAL method.

Documentation
References

IL-12 alpha Protein, Rhesus Macaque (HEK293, Fc) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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IL-12 alpha Protein, Rhesus Macaque (HEK293, Fc)
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