EBV EBNA-1 IgG ELISA Kit (Epstein–Barr Nuclear Antigen 1)

Full Name: EBV EBNA-1 IgG ELISA Kit (Epstein–Barr Nuclear Antigen 1)
Reactivity: Human
Sample Type: Plasma, Serum
Sensitivity: 1.64 U/ml

BACKGROUND

Epstein–Barr nuclear antigen 1 (EBNA1) is a dimeric and multifunctional viral protein which is linked to Epstein–Barr virus (EBV), it also has an vital function in maintaining and establishing the altered state the cells undertake following infection by EBV. EBNA1 contains a repeat sequence of glycine–alanine which separates the protein into the carboxy and amino-terminal domains. Another role of this sequence is in stabilising the protein and preventing proteasomal breakdown, in addition to impairing MHC class I-restricted antigen presentation and antigen processing.

It is the only latent protein-encoding genes that is identified to be consistently expressed in Burkitt’s lymphoma cells, this contributes to EBV malignancies via B cell-directed expression. There have many publications which indicate another important role of EBNA1 is in maintaining the function in tumors. There has also been recent associations to epithelial to mesenchymal transition (EMT) within nasopharyngeal carcinoma cells and this is through the TGF-β1/miR-200/ZEB signalling pathway.

INTENDED USE

Human EBV EBNA-1 IgG ELISA kit is designed for measuring in-vitro concentrations of human IgG antibodies to Epstein–Barr virus EBNA-1 (EBV EBNA-1 IgG) using serum or plasma. This assay has a minimum analytical sensitivity limit of 1.64 U/ml.

CONTENT

All reagents supplied need to be stored at 2 °C – 8 °C, unopened reagents will retain reactivity until expiration date. Do not use reagents beyond this date.

• EBV EBNA-1 coated microtiter strips.
• Calibrator A (Negative Control).
• Calibrator D (Positive Control).
• Calibrator B (Cut-Off Standard).
• Calibrator C (Weak Positive Control).
• Sample Diluent.
• Enzyme Conjugate.
• TMB Substrate.
• Washing Buffer (10x).
• Stop Solution.

SENSITIVITY

The minimum detection sensitivity level of human IgG antibodies against Epstein–Barr virus EBNA-1 (EBV-EBNA-1 IgG) using current EBV EBNA-1 IgG ELISA kit was 1.64 U/ml. The dynamic range for this assay is 1.0 – 150.0 U/ml.

ASSAY CHARACTERISTICS

– Intra-Assay-Precision: 7.6 %
– Inter-Assay-Precision: 6.6 %
– Inter-Lot-Precision: –
– Analytical Sensitivity: 1.6 U/mL
– Recovery: 77 – 83 %
– Linearity: 96 – 187 %
– Cross-Reactivity: No cross-reactivity to Cytomegaly, Herpes and Varicella.
– Interferences: No interferences to bilirubin up to 0.3 mg/mL, hemoglobin up to 8.0 mg/mL and triglycerides up to 5.0 mg/mL.
– Clinical Specificity: 97 %
– Clinical Sensitivity: 97 %

REFERENCES

1. High anti-EBNA-1 IgG levels are associated with early-onset myasthenia gravis. Eur J Neurol. (2012) 19 (6): 842-6. Csuka D., et al.
2. Evaluation of a new ELISA for the detection of specific IgG to the Epstein-Barr_nuclear antigen 1 (EBNA-1). Clin Lab. (2007) 53 (3-4): 151-5. Schenk B.I., et al.
3. Low intrathecal immune response of anti-EBNA-1 antibodies and EBV DNA from multiple sclerosis patients. Diagn Microbiol Infect Dis. (2011) 70 (1): 85-90. Villegas E., et al.
4. Comparison of two commercial ELISA systems for evaluating anti-EBNA1 IgG titers. J Med Virol. (2013) 85 (1): 128-31. Dobson R., et al.

OTHER RELATED ELISA KITS

• EBV EBNA-1 IgM ELISA Kit
• EBV VCA IgG ELISA Kit
• EBV EA IgG ELISA Kit