Human IFN Alpha Multi-Subtype ELISA Kit (TCM)

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Product Features: 
  • ELISA assay detects 11 of 12 human IFN alpha subtypes
  • ELISA assay quantifies human IFN-alpha 2 down to 12.5 pg/ml in tissue culture media (TCM)
  • Less than 10% inter and intra-assay CV

Full Product Name: VeriKine Human Interferon Alpha Multi-Subtype ELISA Kit

 

Looking for a TCM compatible All Subtype ELISA? Check out our NEW 41135 kit!

Ordering

Catalog No. Pack Size Price Quantity
41105-2

5 x 96-well plate

 $2,775.00
$2,950.00
41105-1

1 x 96-well plate

 $695.00

Specifications

Compatibility: Tissue Culture Media
ELISA Assay Range: 12.5 - 500 pg/ml or 156 - 5000 pg/ml
Speed: Incubation time, 3 hours, 15 minutes
Specificity: Human Interferon Alpha (No cross-reactivity against human IFN-γ, IFN-β or IFN-ω; mouse or rat IFN-α, IFN-β or IFN-γ; bovine IFN-τ.)
Synonyms: IFN alpha, IFN-a, interferon alpha, IFN alpha 2, IFN-a2, interferon alpha 2, Leukocyte interferon, Leukocyte IFN, alpha interferon, interferon alfa, IFN alfa, interferon alpha 2a, IFN alpha 2a, interferon a, interferon alpha 2b, IFN alpha 2b, Type I interferon alpha, Type I IFN alpha
 
Inter-Assay CV: ≤ 8%
Intra-Assay CV: ≤ 8%
 
 
Storage: 2-8°C
Expiration Date: Twenty-one months from date of manufacture
Shipping Condition: Wet Ice

Materials Provided:

  • Pre-coated microtiter plate(s)
  • Plate Sealers
  • Wash Solution Concentrate
  • Human Interferon Alpha Standard, 10,000 pg/ml
  • Dilution Buffer
  • Antibody Concentrate
  • HRP Conjugate Concentrate
  • Concentrate Diluent
  • TMB Substrate
  • Stop Solution

Tech Info / Data

Human IFN alpha 2a extended range curve from 156 to 5000 pg/ml using PBL Human Interferon Alpha Multi-Subtype ELISA (41105)
Background: 

The VeriKine Human IFN-α Multi-Subtype ELISA kit is specifically formulated to detect 14 out of 15 identified human IFN-α subtypes/alleles in media using a sandwich immunoassay. They are: IFN-αA, IFN-α2, IFN-αD, IFN-αB2, IFN-αC, IFN-αG, IFN-αH, IFN-αI, IFN-αJ1, IFN-αK, IFN-α1, IFN-α4a, IFN-α4b, and IFN-αWA. The kit is based on an ELISA with anti-detection antibody conjugated to horseradish peroxidase (HRP). Tetramethyl-benzidine (TMB) is the substrate. The assay is based on the international reference standard for human interferon alpha (Hu-IFN-α) provided by the National Institutes of Health.

Interferons (IFNs) are a family of mammalian cytokines initially characterized by their ability to inhibit viral infection. Generation of type I IFNs occurs downstream of a multitude of immunologic stimuli and can be either an indicator of host defense or an indicator of autoimmunity. In addition to their antiviral properties, IFNs have also been shown to exhibit anti-proliferative, immunomodulatory, and many other activities.

In humans, Interferon Alpha (IFN-alpha) is a family comprised of more than 12 homologous protein subtypes that exhibit diverse biologic activities. This group of proteins are greater than 85% homologous by amino acid sequence. Numerous individual human IFN-α subtypes have been identified; many display different properties. It remains unclear why there are multiple IFN-α subtypes. A variety of studies suggested they possess overlapping but also unique sets of biological activities. At least one subtype is used as a therapeutic, as a readout of drug efficacy in clinical trials, and as a marker of pathology in human clinical and preclinical studies. Elucidating the functional significances of various IFN-alpha subtypes can lead to further refinement of current interferon based therapeutic applications.

Citations

31 Citations:

  1. Kontny, et al. (2018). Subgroups of Sjögren's syndrome patients categorised by serological profiles: clinical and immunological characteristics. Reumatologia, 8 pgs. PMID: 30647480. (link).

  2. Speer, Esther, et al. (2018). Pentoxifylline, Dexamethasone, and Azithromycin Demonstrate Distinct Age-Dependent and Synergistic Inhibition of TLR- and Inflammasome-Mediated Cytokine Production in Human Newborn and Adult Blood In Vitro. PLOS One, 29 pgs. PMID: 29715306. (link)

  3. Riggs, Jeffrey, et al. (2018). Characterisation of Anifrolumab, a Fully Human Anti-Interferon Receptor Antagonist Antibody for the Treatment of Systemic Lupus Erythematosus. Lupus Science & Medicine, 12 pgs. PMID: 29644082. (link)

  4. Bressy, Christian, et al. (2018). Cell Cycle Arrest in G2/M Phase Enhances Replication of Interferon-Sensitive Cytoplasmic RNA Viruses via Inhibition of Antiviral Gene Expression. JVI, 55 pgs. PMID: no PMID. (link)

  5. Zecevic, Lamija, et al. (2017). Potential Immune Biomarkers in Diagnosis and Clinical Management for Systemic Lupus Erythematosus. Journal of Medical Biochemistry, 9 pgs. PMID: 30581353. (link)

  6. Smith, Nikaia, et al. (2017). Natural Amines Inhibit Activation of Human Plasmacytoid Dendritic Cells Through CXCR4 Engagement. Nature Communications, 13 pgs. PMID: 28181493. (link)

  7. Oon, Shereen, et al. (2016). A Cytotoxic Anti-IL-3R-alpha Antibody Targets Key Cells and Cytokines Implicated in Systemic Lupus Erythematosus. JCI Insight, 15 pgs. PMID: 27699260. (link)

  8. Dowell, Nicholas, et al. (2016). Acute Changes in Striatal Microstructure Predict the Development of Interferon-Alpha Induced Fatigue. Biological Psychiatry, 9 pgs. PMID: 26169252. (link)

  9. Huang, Cheng, et al. (2015). Highly Pathogenic New World and Old World Human Arenaviruses Induce Distinct Interferon Responses in Human Cells. JVI, 10 pgs. PMID: 25926656. (link)

  10. Bonaparte, Sarah, et al. (2015). HPV-Positive Cervical Cancer Cells Show Generally Reduced Levels of IFN-Alpha. Belmont University, 11 pgs. PMID: no PMID. (link)

  11. Huang, Yanyan, et al. (2014). Hcmv-miR-UL112 Attenuates NK Cell Activity by Inhibition Type I Interferon Secretion. Immunology Letters, 30 pgs. PMID: 25530545. (link)

  12. Lederle, Alexandre, et al. (2014). Neutralizing Antibodies Inhibit HIV-1 Infection of Plasmacytoid Dendritic Cells by an Fc-gamma-Rlla Independent Mechanism and Do Not Diminish Cytokines Production. Scientific Reports, 10 pgs. PMID: 25132382. (link)

  13. Vogelsang, Petra, et al. (2014). Altered Phenotype and Stat1 Expression in Toll-Like Receptor 7/8 Stimulated Monocyte-Derived Dendritic Cells from Patients with Primary Sjoergen's Syndrome. Arthritis Research & Therapy, 22 pgs. PMID: 25113744. (link)

  14. Maeyama, Jun-ichi, et al. (2014). A Palindromic CpG-Containing Phosphodiester Oligodeoxynucleotide as a Mucosal Adjuvant Stimulates Plasmacytoid Dendritic Cell-Mediated T_H1 Immunity. PLOS One, 10 pgs. PMID: 24586411. (link)

  15. Stone, Amy, et al. (2013). Hepatitis C Virus Pathogen Associated with Molecular Pattern (PAMP) Triggers Production of Lambda-Interferons by Human Plasmacytoid Dendritic Cells. PLOS One, 13 pgs. PMID: 23637605. (link)

  16. Chen, Qian, et al. (2013). Interleukin-27 is a potent inhibitor of cis HIV-1 replication in monocyte-derived dendritic cells via a type I interferon-independent pathway. PLOS One, 10 pgs. PMID: 23527130. (link)

  17. Tian, Ren-Rong, et al. (2012). IFN-lambda Inhibits HIV-1 Integration and Post-Transcriptional Events In Vitro, but there is Only Limited In Vivo Repression of Viral Production. Antiviral Research. PMID: 22584351. (link)

  18. Drannik, Anna, et al. (2012). Trappin-2/Elafin Modulate Innate Immune Responses of Human Endometrial Epithelial Cells to Poly I:C. PLOS One, 16 pgs. PMID: 22545145. (link)

  19. Zepp, Jarod A, et al. (2011). Protection from RNA and DNA viruses by IL-32. Journal of Immunology, 10 pgs. PMID: 21346229. (link)

  20. Tomescu, et al. (2010). Increased Plasmacytoid Dendritic Cell Maturation and Natural Killer Cell Activation in HIV-1 Exposed, Uninfected Intravenous Drug Users. AIDS, 9 pgs. PMID: 20647906. (link)

  21. Xu, Donghseng, et al. (2010). Viral transformation for production of personalized type I interferons. Biotechnology Journal. PMID: 20518060. (link)

  22. Xu, Yongfen, et al. (2009). HBsAg inhibits TLR9-mediated activation and IFN-alpha production in plasmacytoid dendritic cells. Molecular Immunology, 7 pgs. PMID: (link)

  23. Scagnolari, Carolina, et al. (2009). Gene Expression of Nucleic Acid-Sensing Pattern Recognition Receptors in Children Hospitalized for Respiratory Syncytial Virus-Associated Acute Bronchiolitis. Clinical and Vaccine Immunology, 8 pgs. PMID: 19386802. (link)

  24. Mansson, Anne, et al. (2009). Role of atopic status in Toll-like receptor (TLR)7- and TLR9-mediated activation of human eosinophils. JLB, 9 pgs. PMID: 19129482. (link)

  25. Nold, Marcel F, et al (2008). Endogenous IL-32 controls cytokine and HIV-1 production. Journal of Immunology, 10 pgs. PMID: 18566422. (link)

  26. Fabricius, Dorit, et al. (2006). Human plasmacytoid dendritic cell function: inhibition of IFN-alpha secretion and modulation of immune phenotype by vasoactive intestinal peptide. Journal of Immunology, 9 pgs. PMID: 17056516. (link)

  27. Gorski, Kevin, et al. (2006). Distinct indirect pathways govern human NK-cell activation by TLR-7 and TLR-8 agonists. International Immunology, 12 pgs. PMID: 16728430. (link)

  28. Abel, Kristina, et al. (2005). Deoxycytidyl-Deoxyguanosine Oligonucleotide Classes A, B, and C Induce Distinct Cytokine Gene Expression Patterns in Rhesus Monkey Peripheral Blood Mononuclear Cells and Distinct Alpha Interferon Responses in TLR9-Expressing Rhesus Monkey Plasmacytoid Dendritic Cells. Clinical and Diagnostic Laboratory Immunology, 16 pgs. PMID: 15879022. (link)

  29. Zhang, Weidong, et al. (2005). Inhibition of respiratory syncytial virus infection with intranasal siRNA nanoparticles targeting the viral NS1 gene. Nature Medicine, 7 pgs. PMID: 15619625. https://www.ncbi.nlm.nih.gov/pubmed/15619625 (link)

  30. Coates, Toby, et al. (2003). Dendritic cell subsets in blood and lymphoid tissue of rhesus monkeys and their mobilization with Flt3 ligand. Blood Journal, 9 pgs. PMID: (link)

  31. Kerkmann, Miren, et al. (2003). Activation with CpG-A and CpG-B oligonucleotides reveals two distinct regulatory pathways of type I IFN synthesis in human plasmacytoid dendritic cells. Journal of Immunology, 11 pgs. PMID: 12707322. (link)

References:

  1. Staehelin et al. (1981) Methods in Enzymology, Vol. 79 (Pestka, ed.), Academic Press, New York, 589-595.

  2. Kelder et al. (1986) Methods in Enzymology, Vol. 119 (Pestka, ed.), Academic Press, New York, 582-587.

  3. Human IFN-α international reference standard provided by the NIH, reference no. Gxa01-901-535. Pestka (1986) Methods in Enzymology, Vol. 119 (Pestka, ed.), Academic Press, New York, 14-23.

  4. Rubinstein et al. (1981) Arch. Biochem. Biophys. 210, 307-318.

  5. Hobbs et al. (1982) J. Biol. Chem. 257, 4071-4076.

Documentation

Typical Interferon Alpha Standard Curve from 12.5 pg/ml to 500 pg/ml Using PBL's Human IFN Alpha Multi-Subtype ELISA (41105)

 

Human IFN alpha 2a standard curve from 12.5 to 500 pg/ml using PBL Human Interferon Alpha Multi-Subtype ELISA (41105)

Assay Range: 12.5 - 500 pg/ml

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