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IFN-alpha 2a human

recombinant, expressed in E. coli, ≥95% (SDS-PAGE), ≥95% (HPLC)

B cell interferon, IFN-α 2A, IFNA2, Interferon α-2a, Leukocyte interferon, Type I interferon
MDL number:

biological source



expressed in E. coli


≥95% (HPLC)
≥95% (SDS-PAGE)




1x10^8 units/mg

mol wt

~19.4 kDa


pkg of 100 μg

storage condition

avoid repeated freeze/thaw cycles


endotoxin, tested

NCBI accession no.

UniProt accession no.

shipped in

wet ice

storage temp.


Gene Information

human ... IFNA2(3440)

General description

The gene IFN-α2a (interferon α 2a) is mapped to human chromosome 9. The encoded protein is a type 1 interferon and a glycoprotein. It belongs to the class of cytokines. Recombinant human IFN-α 2a is a single, non-glycosylated, polypeptide chain with a molecular mass 19.4kDa containing 166 amino acid residues. Interferon-α-2a, a recombinant interferon-a, is expressed in Escherichia coli. It is eliminated majorly via renal catabolism. However, hepatic and biliary elimination comprise the minor pathways.


IFN-α2a (interferon α 2a)-human has been used to study heterosexual transmission of subtype C HIV (human immunodeficiency virus)-1.
IFN-alpha 2a human has been used:
  • as standard protein in reverse-phase high-performance liquid chromatography (RP-HPLC) and reducing and non-reducing sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) for characterizing recombinant consensus interferon (rh cIFN)
  • as a supplement in Roswell Park Memorial Institute (RPMI) 1640 medium for studying interferon resistance in peripheral blood mononuclear cells (PBMC)
  • to treat hepatocytes to test its effect on signal transducer and activator of transcription 1 (STAT1) mRNA levels and cytochrome P450 family 1 subfamily A member 2 (CYP1A2) expression
  • to stimulate human monocyte derived macrophages (MDMs)

Biochem/physiol Actions

IFN-α2a (interferon α 2a) is a lymphoid factor that possesses potent anti-viral activity. It mainly interacts with cell surface-specific receptors. This interaction is responsible for anti-pathogenic response in cells. IFN-α2a also exhibits anti-tumor activities. Humans with brain tumor were shown to have mutations in this gene. Interferon-α-2a (IFN-a 2A) favors 2′5′-oligoadenylate synthetase and double-stranded RNA-dependent protein kinase induction to target viral mRNA and protein synthesis. IFN-α 2A exhibits immunomodulatory effects, inducing cytokines and other interferon production. It also increases natural killer and cytotoxic T cell activity, as well as histocompatibility complex antigen expression. It may be beneficial for treating hepatic cirrhosis, chronic hepatitis C and hepatitis D.

Physical form

Lyophilized without any additives.


Centrifuge the vial prior to opening. Avoid freeze-thaw cycles.
Reconstitute in water to a concentration of 0.1-1 mg/mL. This solution can then be diluted into other aqueous buffers.

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Tim Regan et al.
Journal of leukocyte biology, 103(4), 681-692 (2018-01-30)
Several lines of evidence link macrophage activation and inflammation with (monoaminergic) nervous systems in the etiology of depression. IFN treatment is associated with depressive symptoms, whereas anti-TNFα therapies elicit positive mood. This study describes the actions of 2 monoaminergic antidepressants
Maciej Czerwiński et al.
Pharmacology research & perspectives, 7(6), e00551-e00551 (2019-12-21)
Some immunomodulatory agents stimulate the release of cytokines capable of suppressing P450 enzymes and potentially affecting pharmacokinetics of coadministered medications. Cytokines released in response to an immunomodulator in the blood ex vivo can be used to screen for the potential
M Haria et al.
Drugs, 50(5), 873-896 (1995-11-01)
Interferon-alpha-2a is a recombinant interferon with antiviral, antitumour and immunomodulatory properties. Clinical studies have demonstrated that the drug offers therapeutic benefit in patients with some forms of chronic viral hepatitis. Remission, as measured by clearance of viral DNA and hepatitis
C M Perry et al.
BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy, 10(1), 65-89 (2007-11-21)
Interferon-alpha-2a, a single interferon-alpha subtype manufactured by use of recombinant DNA technology, has immmunomodulatory, antiviral and antiproliferative properties. It is a beneficial treatment for about 30% of patients with well-compensated chronic hepatitis C. Biochemical responses [defined as normalisation of serum
Heterosexual Transmission of Subtype C HIV-1 Selects Consensus-Like Variants without Increased Replicative Capacity or Interferon-a Resistance.
Deymier MJ
PLoS Pathogens, 11, e1005154-e1005154 (2015)

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