Back to Search
Start Over
Novel autoimmune hepatitis-specific autoantigens identified using protein microarray technology.
- Source :
-
Journal of proteome research [J Proteome Res] 2010 Jan; Vol. 9 (1), pp. 30-9. - Publication Year :
- 2010
-
Abstract
- Autoimmune hepatitis (AIH) is a chronic necroinflammatory disease of the liver with a poorly understood etiology. Detection of nonorgan-specific and liver-related autoantibodies using immunoserological approaches has been widely used for diagnosis and prognosis. However, unambiguous and accurate detection of the disease requires the identification and characterization of disease-specific autoantigens. In the present study, we have profiled the autoantigen repertoire of patients with AIH versus those with other liver diseases, identifying and validating three novel and highly specific biomarkers for AIH. In phase I, we fabricated a human protein chip of 5011 nonredundant proteins and used it to quickly identify 11 candidate autoantigens with relative small serum collection. In phase II, we fabricated an AIH-specific protein chip and obtained autoimmunogenic profiles of serum samples from 44 AIH patients, 50 healthy controls, and 184 additional patients suffering from hepatitis B, hepatitis C, systemic lupus erythematosus, primary Sjogren's syndrome, rheumatoid arthritis, or primary biliary cirrhosis. With this two-phase approach, we identified three new antigens, RPS20, Alba-like, and dUTPase, as highly AIH-specific biomarkers, with sensitivities of 47.5% (RPS20), 45.5% (Alba-like), and 22.7% (dUTPase). These potential biomarkers were further validated with additional AIH samples in a double-blind design. Finally, we demonstrated that these new biomarkers could be readily applied to ELISA-based assays for use in clinical diagnosis/prognosis.
- Subjects :
- Algorithms
Autoantigens chemistry
Biomarkers blood
Biomarkers chemistry
DNA, Complementary genetics
DNA, Complementary metabolism
Equipment Design
Hepatitis, Autoimmune immunology
Humans
Liver metabolism
Logistic Models
Protein Array Analysis instrumentation
Proteins genetics
Recombinant Proteins genetics
Recombinant Proteins metabolism
Reproducibility of Results
Autoantigens blood
Hepatitis, Autoimmune blood
Protein Array Analysis methods
Proteins metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1535-3907
- Volume :
- 9
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Journal of proteome research
- Publication Type :
- Academic Journal
- Accession number :
- 19545157
- Full Text :
- https://doi.org/10.1021/pr900131e