Skip to Content
MilliporeSigma
All Photos(2)

Documents

MABF227

Sigma-Aldrich

Anti-Interferon Lambda 4, clone 4G1 Antibody

clone 4G1, 1 mg/mL, from mouse

Synonym(s):

Interferon lambda-4, IFN-lambda-4

Sign Into View Organizational & Contract Pricing


About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

4G1, monoclonal

species reactivity

nonhuman primates, human

should not react with

porcine, giant panda, canine, bat, bovine

concentration

1 mg/mL

technique(s)

ELISA: suitable
flow cytometry: suitable
immunocytochemistry: suitable
immunohistochemistry: suitable
western blot: suitable

isotype

IgG1κ

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

Related Categories

General description

Interferon Lambda 4, also known as IFN-lambda-4, and encoded by the gene IFNL4, is an important cytokine that forms part of our innate immunity against viruses. Interferon lambda-4 activates the JAK-STAT signaling pathway and ultimately up regulates several interferon specific stimulated genes. Interferon lambda-4 expression can be stimulated by nucleotide strands particularly ployinosinic-polycytidylic acid (polyI:C) which mimics the double-stranded hepatitis C virus. A genetic variation in the Interferon lambda-4 gene is associated with susceptibility to HCV infection. The mutation of a single base insertion results in gene inactivation resulting in defective immune response to HCV. Interferon lambda-4 signaling operates through Interferon lambda R1 and IL-10R2 receptors and the mutation is associated with defective glycosylation which is required for secretion, thus the amplification of the signal becomes compromised resulting in susceptibility to HCV as well as coronaviruses.

Specificity

Clone 4G1 detected IFNL4 expression induction in primary hepatocytes (e.g. by PolyIC or by HCV) and exogenously overexpressed IFNL4 in HepG2 cells. IFNL4 expression is not detectable in normal liver cells (Dr. Ludmila Prokunina-Olsson, National Cancer Institute, NIH, Bethesda, MD). Clone 4G1 does not cross-react with IFN-alpha or IL-28B (Prokunina-Olsson, L., et al. (2013). Nat. Genet. 45(2):164-171).

Immunogen

Linear peptide corresponding to an internal sequence from the N-termninal half of human interferon lambda 4.

Application

Immunohistochemistry Analysis: A 1:50 dilution from a representative lot detected Interferon Lambda 4 in human and rat liver tissue sections.

ELISA Analysis: A representative lot was conjugated with a sulfo-tag (MSD) and employed as the detection antibody in a sandwich ELISA application. An exogenously expressed IFNL4 HaloTag fusion was found secreted in the culture media from IFNL4-Halo construct-transfected, but not mock-transfected HepG2 cells (Onabajo, O.O., et al. (2015). J. Interferon. Cytokine Res. 35(11):888-900).

Flow Cytometry Analysis: A representative lot immunostained HepG2 cells transfected to express HaloTag fusion IFN-λ4 orthologs of elephant, human and non-human primate (chimpanzee, orangutan, rhesus, marmoset, cynomolgus) origins, but not cells expressing IFNL4 of bovine, bat, canine, panda, and porcine species (Paquin, A., et al. (2016). J. Interferon Cytokine Res. 36(1):30-36).

Immunocytochemistry Analysis: Representative lots immunostained HepG2 cells transfected to express HaloTag fusion of IFN-λ4 orthologs of elephant, human and non-human primate (chimpanzee, orangutan, rhesus, marmoset, cynomolgus) origins (Paquin, A., et al. (2016). J. Interferon Cytokine Res. 36(1):30-36; Prokunina-Olsson, L., et al. (2013). Nat. Genet. 45(2):164-171).

Immunocytochemistry Analysis: A representative lot detected a time-dependent induction of IFNL4 expression in hepatocytes from a donor heterozygous for ss469415590 (TT/ΔG) upon PolyI:C treatment or hepatitis C virus (HCV) strain JFH1HCV infection in cultures (Prokunina-Olsson, L., et al. (2013). Nat. Genet. 45(2):164-171).

Western Blotting Analysis: A representative lot detected HaloTag fusion IFN-λ4 orthologs of elephant, human and non-human primate (chimpanzee, orangutan, rhesus, marmoset, cynomolgus) origins, but not IFNL4 of bovine, bat, canine, panda, and porcine species transiently expressed in HepG2 cells (Paquin, A., et al. (2016). J. Interferon Cytokine Res. 36(1):30-36).

Western Blotting Analysis: A representative lot detected exogenously expressed IFNL4 HaloTag fusion constructs in transfected COS-7 and HepG2 cells, but not in untransfected cells. Clone 4G1 does not cross-react with IFN-alpha or IL-28B (Prokunina-Olsson, L., et al. (2013). Nat. Genet. 45(2):164-171).
This Anti-Interferon Lambda 4 antibody, clone 4G1 is validated for use in ELISA, Flow Cytometry, Immunocytochemistry, Immunohistochemistry, and Western Blotting for the detection of Interferon Lambda 4.

Quality

Evaluated by Western Blotting of human IFNL4 recombinant protein.

Western Blotting Analysis: 1.0 µg/mL of this antibody detected 0.1 µg of human IFNL4 recombinant protein.

Target description

~21 kDa observed.

Physical form

Format: Purified

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Seema Bharatiya et al.
Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research, 43(9), 370-378 (2023-03-08)
The TT allele of the dinucleotide variant rs368234815 (TT/ΔG) abolishes the open reading frame (ORF) created by the ancestral ΔG allele of the human interferon lambda 4 (IFNL4) gene, thus preventing the expression of a functional IFN-λ4 protein. While probing
Ashley Paquin et al.
Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research, 36(1), 30-36 (2015-08-27)
IFN-λ4 is a novel type-III interferon with strong clinical significance in humans. Only a subset of individuals--up to 10% of Asians, 50% of Europeans, and 90% of Africans--carry the ΔG allele of a genetic variant rs368234815-TT/ΔG and are genetically able
Jae-Hee Chung et al.
Cytokine, 125, 154833-154833 (2019-09-04)
Interferon lambda 4 (IFNλ4) has been recently known and studied for its role in hepatitis C virus (HCV) infection, but its clinical potential is significantly hampered due to its poor expression in vitro. Our study reports the successful production of
Pil Soo Sung et al.
Scientific reports, 7(1), 3821-3821 (2017-06-21)
Genetic polymorphisms in IFNL4 have been shown to predict responses to IFN-α-based therapy in hepatitis C virus (HCV)-infected patients. The IFNL4-ΔG genotype, which encodes functional IFN-λ4 protein, is associated with a poor treatment response. In the present study, we investigated
Adeola A Obajemu et al.
Journal of immunology (Baltimore, Md. : 1950), 199(11), 3808-3820 (2017-10-27)
Type III IFNs are important mediators of antiviral immunity. IFN-λ4 is a unique type III IFN because it is produced only in individuals who carry a dG allele of a genetic variant rs368234815-dG/TT. Counterintuitively, those individuals who can produce IFN-λ4

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service