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I4276

Sigma-Aldrich

Interferon-αA human

≥95%, suitable for cell culture, buffered aqueous solution, recombinant, expressed in E. coli

Synonym(s):

IFN-αA, Interferon-α2A

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.32

biological source

human

Quality Level

recombinant

expressed in E. coli

assay

≥95%

form

buffered aqueous solution

mol wt

19 kDa

packaging

pkg of 20 μg

concentration

≥0.2 mg/mL

technique(s)

cell culture | mammalian: suitable

impurities

endotoxin, tested

color

colorless

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... IFNA2(3440)

Application

Interferon-αA human has been used to:
  • study the effect of Chikungunya virus on interferon-mediated JAK (Janus kinase)-STAT (signal transducers and activators of transcription) signaling
  • study the effect of interferon-α and PRK2 (protein kinase C-related kinase 2) inhibitors on hepatitis C virus replication
  • compare the effect of Monascus pigment derivatives on hepatitis C virus replication

Biochem/physiol Actions

Cytokine with anti-viral, anti-proliferative, immunoregulatory, and proinflammatory activities. Type I Interferons are a closely related family of 165-172 amino acid proteins that are produced by leukocytes (α subtypes), fibroblasts (β subtypes), lymphocytes (ω subtypes) and ruminant embryos (τ subtypes). Interferon induces a variety of effects on target cells including antiviral, antiproliferative and immunomodulatory activities.

Physical form

Supplied as a solution in 5 mM sodium acetate, pH 4.0.

Analysis Note

The biological activity is determined in the cytopathic effect inhibition assay using MDBK cells with vesicular stomatitis virus (VSV). A cytopathic effect of 50% is produced with 1 unit/ml interferon. The units are determined with respect to WHO International standard reference for human interferonαA.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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S-J Kim et al.
Journal of viral hepatitis, 16(10), 697-704 (2009-02-27)
Hepatitis C virus (HCV) infection is a serious threat to human health worldwide. In spite of the continued search for specific and effective anti-HCV therapies, the rapid emergence of drug-resistance variants has been hampering the development of anti-HCV drugs designed
Ji-Min Sun et al.
The Journal of antimicrobial chemotherapy, 67(1), 49-58 (2011-11-15)
Hepatitis C virus (HCV) infection causes chronic liver disease and is a major public health problem worldwide. The aim of this study was to evaluate the potential of Monascus pigment derivatives, which were derived from a microbial secondary metabolite synthesized
Jelke J Fros et al.
Journal of virology, 84(20), 10877-10887 (2010-08-06)
Chikungunya virus (CHIKV) is an emerging human pathogen transmitted by mosquitoes. Like that of other alphaviruses, CHIKV replication causes general host shutoff, leading to severe cytopathicity in mammalian cells, and inhibits the ability of infected cells to respond to interferon
A convenient and rapid cytopathic effect inhibition assay for interferon.
P C Familletti et al.
Methods in enzymology, 78(Pt A), 387-394 (1981-01-01)
S Rubinstein et al.
Journal of virology, 37(2), 755-758 (1981-02-01)
A convenient assay for interferons based on reduction of cytopathic effect was developed. The number of manipulations and the lengths of the various incubation steps were reduced to a minimum. The assay is simple to perform and can be completed

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