Aptamer-based proteomics of serum and plasma in acquired aplastic anemia
Open accessAbstract
Single-stranded oligonucleotides containing deoxyuridine are aptamers (SOMAmers) that can bind proteins with high specificity and affinity and slow dissociation rates. SOMAscan, an aptamer-based proteomic technology, allows measurement of more than 1,300 proteins simultaneously for the identification of new disease biomarkers. The aim of the present study was to identify new serum and plasma protein markers for diagnosis of acquired aplastic anemia (AA) and response to immunosuppressive therapies (IST). SOMAscan was used to screen 1,141 serum proteins in 28 AA patients before and after therapy and 1,317 plasma proteins in seven SAA patients treated with standard IST and a thrombopoietin receptor agonist. From our analysis, 19 serum and 28 plasma proteins were identified as possible candidate diagnostic and prognostic markers. A custom immunobead-based multiplex assay with five selected serum proteins (BMP-10, CCL17, DKK1, HGF, and SELL) was used for validation in a verification set (n = 65) of samples obtained before and after IST and in a blinded validation cohort at baseline (n = 16). After technical validation, four biomarkers were employed to predict diagnosis (accuracy, 88%) and long-term response to IST (accuracy, 79%). In conclusion, SOMAscan is a powerful tool for the identification of new biomarkers. We propose further larger studies to validate new candidate serum and plasma diagnostic and prognostic markers of AA.
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Antibody- or aptamer-based immunoassays are capable of high-fidelity validation, versatile in application, and easier to execute than MS-based assays.
“These assays are capable of high-fidelity validation, versatile in application, and easier to execute than MS-based assays.”
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Systems-based proteomics to resolve the biology of Alzheimer’s disease beyond amyloid and tau
Rayaprolu, S., Higginbotham, L., Bagchi, P., Watson, C. M., Zhang, T., Levey, A. I., Rangaraju, S., & Seyfried, N. T. (2021) · Neuropsychopharmacology · doi:10.1038/s41386-020-00840-3 · Cited by 118 · see citing works
- Authors
- Giudice, V., Biancotto, A., Wu, Z., Cheung, F., Candia, J., Fantoni, G., Kajigaya, S., Rios, O., Townsley, D., Feng, X., & Young, N. S.
- Affiliations
- National Institutes of Health (US)
- Corresponding author
- Giudice, Valentina
- ORCID
- Venue
- Experimental Hematology
- Publisher
- Elsevier BV
- Published
- 2018-12
- Volume
- 68
- Pages
- 38-50
- ISSN
- 0301-472X (ISSN-L)
- PMC
- PMC6748047
- OpenAlex
- W2896903391
- Cited by
- 25
- References
- 53
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 1 · 2023: 2 · 2022: 6 · 2021: 6 · 2020: 2 · 2019: 2
- FWCI
- 3.05
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Experimental Hematology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health
- National Heart, Lung, and Blood Institute (Z01HL002315)
- Topics
- Health Sciences › Medicine › Emergency Medicine › Hematological disorders and diagnostics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Blood disorders and treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Advanced Biosensing Techniques and Applications
- Keywords
- acquired aplastic anemia, SomaScan, aptamer-based proteomics, serum protein biomarkers, plasma protein biomarkers, immunosuppressive therapy response, thrombopoietin receptor agonists, diagnostic biomarkers, prognostic factors, CCL17, DKK1, hepatocyte growth factor, SELL
- MeSH terms
- Adolescent, Adult, Aged, Anemia, Aplastic, Benzoates, Blood Proteins, Child, Child, Preschool, Female, Humans, Hydrazines, Immunosuppressive Agents, Male, Middle Aged, Pyrazoles, Biomarkers, Proteomics, Aptamers, Nucleotide, Receptors, Thrombopoietin, Young Adult, Molecular Targeted Therapy
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