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  • HEK293 expressed
  • Endotoxin-free
  • Animal-component free

HumanKine® recombinant human IL-21 protein- GMP grade

EC50

0.25-1.25 ng/mL

Species Reactivity

human

Purity

>95%

ISO 13485 certified HumanKine® human cell-expressed cytokines and growth factors

Cat no : HZ-1319-GMP

Synonyms

Interleukin 21, Interleukin-21, Interleukin-21 isoform, Za11, CVID11

Validation Data Gallery

  • Purity of GMP-grade recombinant human IL-21 was determined by SDS- polyacrylamide gel electrophoresis. The protein was resolved in an SDS- polyacrylamide gel in reducing and non-reducing conditions and stained using Coomassie blue.

    Purity of GMP-grade recombinant human IL-21 was determined by SDS- polyacrylamide gel electrophoresis. The protein was resolved in an SDS- polyacrylamide gel in reducing and non-reducing conditions and stained using Coomassie blue.

  • GMP Recombinant human IL-21 (Cat no: HZ-1319) induces dose-dependent release of IFN-gamma in the NK-92 human cell line. NK-92 cells were treated with increasing concentration of recombinant IL-21 for 72 hours before supernatant collection. The supernatant was tested for IFN gamma using Proteintech’s AuthentiKine™ Human IFN-gamma ELISA Kit (KE00146). The EC50 was determined using a 4-parameter non-linear regression model. Activity determination was conducted in triplicate on a validated bioassay. The EC50 range in 0.25-1.25 ng/mL.

    GMP Recombinant human IL-21 (Cat no: HZ-1319) induces dose-dependent release of IFN-gamma in the NK-92 human cell line. NK-92 cells were treated with increasing concentration of recombinant IL-21 for 72 hours before supernatant collection. The supernatant was tested for IFN gamma using Proteintech’s AuthentiKine™ Human IFN-gamma ELISA Kit (KE00146). The EC50 was determined using a 4-parameter non-linear regression model. Activity determination was conducted in triplicate on a validated bioassay. The EC50 range in 0.25-1.25 ng/mL.

Technical Specifications

GeneID 59067
Species Human
Expression HEK293
EC50 0.25-1.25 ng/mL
Purity >95%
Endotoxin<0.1 EU/μg
Accession NumberQ9HBE4
Molecular Mass 18 kDa reduced, 17 kDa non-reduced, monomer, glycosylated
Formulation 1x PBS, See Certificate of Analysis for details
Species Reactivity human

Stability and Reconstitution

Stability and StorageProduct FormTemperature ConditionsStorage Time
(From Date of Receipt)
Lyophilized-20°C to -80°CUntil Expiry Date
LyophilizedRoom Temperature2 weeks
Reconstituted as per CofA-20°C to -80°C6 months
Reconstituted as per CofA4°C1 week
Avoid repeated freeze-thaw cycles.
Reconstitution Briefly centrifuge the vial before opening. It is recommended to reconstitute the protein to 0.2 mg/mL in sterile 1x PBS pH 7.4 containing 0.1% endotoxin-free recombinant human serum albumin (HSA). Gently swirl or tap vial to mix.

GMP Quality Policies

HumanKine® GMP (Good Manufacturing Practice) recombinant proteins are manufactured and validated in accordance with ISO 13485 quality management system and is compliant with GMP.
Our GMP recombinant proteins are animal component free (ACF), xeno free (XF) and tag free (TF). Read more about these policies here.

Background

IL-21 is a type I, 4-α-helix bundle cytokine primarily produced by CD4+ T cells and NK cells. It is a strong activator of proliferation and antibody production in B cells but does signal to numerous other immune cells as well. Elevated IL-21 signaling can promote several autoimmune diseases including type I diabetes, systemic lupus erythematosus (SLE), and rheumatoid arthritis (RA). However, it has also been shown to have potent antitumoral activity, making it a promising candidate for immunotherapy and as an adjuvant material in CAR-T cell therapy (PMID: 22235123, 26966515, 27577879).

Synonyms

Interleukin 21, Interleukin-21, Interleukin-21 isoform, Za11, CVID11