IL12 Human, Sf9

Interleukin-12 Human Recombinant, Sf9
Cat. No.
BT8450
Source

Baculovirus.

Synonyms

23-219aa (IL12A) / 23-328aa (IL12B), Interleukin 12 (subunit beta/alpha), IL12 His, NKSF1, NKSF, CTL maturation factor (TCMF), Cytotoxic lymphocyte maturation factor (CLMF), TSF, Edodekin-alpha, IL-12.

Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity

Greater than 97.0% as determined by analysis by SDS-PAGE.

Usage
THE BioTeks products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Interleukin 12 Human Recombinant is a glycosylated heterodimer containing 503 amino acids (306 amino acid rHuIL-12 p40 and the 197 amino acid rHuIL-12 p35 subunits) and having a molecular mass of 60kDa. IL12 is purified by proprietary chromatographic techniques.            

Product Specs

Introduction
Interleukin 12 subunit beta/alpha or IL12b/IL12a is a growth factor cytokine that enhances the lytic activity of NK/lymphokine-activated killer cells, activated T and NK cells, and stimulates IFN-gamma production (through resting PBMC). IL12b/IL12a is crucial for cellular immunity and activates the differentiation of Th1 cells from precursor T helper cells. This protein interacts with IL23A to form interleukin-23 (IL-23), which plays a role in inducing autoimmune inflammation and influencing autoimmune inflammatory diseases and tumorigenesis.
Description
Recombinant Human Interleukin 12 is a glycosylated heterodimer composed of 503 amino acids (306 amino acid rHuIL-12 p40 and 197 amino acid rHuIL-12 p35 subunits) with a molecular mass of 60kDa. IL12 is purified using proprietary chromatographic techniques.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation
Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.2.
Solubility
Reconstitute the lyophilized Interleukin 12 in sterile 18MΩ-cm H₂O to a concentration of at least 100µg/ml. This solution can be further diluted in other aqueous solutions.
Stability
Lyophilized Interleukin 12, while stable at room temperature for 3 weeks, should be stored desiccated below -18°C. After reconstitution, PDGF BB should be stored at 4°C for 2-7 days. For long-term storage, keep it below -18°C. Avoid freeze-thaw cycles.
Purity
Greater than 97.0% as determined by SDS-PAGE analysis.
Biological Activity
Determined by cell proliferation assay using PHA-stimulated human T lymphoblasts. The ED50 for this effect is 0.01-0.05 ng/mL, corresponding to a specific activity of 11,000 units/µg.
Synonyms

23-219aa (IL12A) / 23-328aa (IL12B), Interleukin 12 (subunit beta/alpha), IL12 His, NKSF1, NKSF, CTL maturation factor (TCMF), Cytotoxic lymphocyte maturation factor (CLMF), TSF, Edodekin-alpha, IL-12.

Source

Baculovirus.

Amino Acid Sequence

IL-12 is a heterodimer of IL-12A and IL-12B linked through a disulfide-bond:

>IL-12 ARNLPVATP DPGMFPCLHH SQNLLRAVSN MLQKARQTLE FYPCTSEEID HEDITKDKTS TVEACLPLEL TKNESCLNSR ETSFITNGSC LASRKTSFMM ALCLSSIYED LKMYQVEFKT MNAKLLMDPK RQIFLDQNML AVIDELMQAL NFNSETVPQK SSLEEPDFYK TKIKLCILLH AFRIRAVTID RVMSYLNAS.

>IL-12B

IWELKKDV YVVELDWYPD APGEMVVLTC DTPEEDGITW TLDQSSEVLG SGKTLTIQVK EFGDAGQYTC HKGGEVLSHS LLLLHKKEDG IWSTDILKDQ KEPKNKTFLR CEAKNYSGRF TCWWLTTIST DLTFSVKSSR GSSDPQGVTC GAATLSAERV RGDNKEYEYS VECQEDSACP AAEESLPIEV MVDAVHKLKY ENYTSSFFIR DIIKPDPPKN LQLKPLKNSR QVEVSWEYPD TWSTPHSYFS LTFCVQVQGK SKREKKDRVF TDKTSATVIC RKNASISVRA QDRYYSSSWS EWASVPCS.

Product Science Overview

Structure and Composition

IL-12 is a heterodimeric cytokine composed of two subunits: IL-12A (p35) and IL-12B (p40). The recombinant human IL-12 produced in Sf9 cells is a glycosylated heterodimer containing 503 amino acids, with a molecular mass of approximately 60 kDa . The two subunits are linked through a disulfide bond, which is essential for its biological activity .

Biological Activity

IL-12 is a potent regulator of cell-mediated immune responses. It induces the production of interferon-gamma (IFN-γ) by natural killer (NK) cells and T cells, enhancing their cytotoxic activity . IL-12 also promotes the differentiation of naive T cells into Th1 cells, which are essential for the immune response against intracellular pathogens and tumors .

Therapeutic Applications

The recombinant form of IL-12 has been explored for its potential in cancer immunotherapy due to its ability to activate NK cells and cytotoxic T lymphocytes . Clinical trials have investigated the use of IL-12 in treating various cancers, HIV, and hepatitis virus infections . However, the therapeutic application of IL-12 has been limited by its toxicity, particularly the risk of cytokine release syndrome (CRS) .

Production and Stability

The recombinant human IL-12 produced in Sf9 cells is purified using proprietary chromatographic techniques to ensure high purity (>97%) . The lyophilized form of IL-12 is stable at room temperature for up to three weeks but should be stored desiccated below -18°C for long-term storage . Upon reconstitution, it should be stored at 4°C for short-term use and below -18°C for future use .

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