ArticleVirology journal2022
Sensitive and specific serological ELISA for the detection of SARS-CoV-2 infections.
Article in Virology journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.
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Who cites it
31 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.
- Optical and Electrochemical Biosensors for Detection of Pathogens Using Metal Nanoclusters: A Systematic Review.Biosensors · 2025Pooled it
- Advances on Sensors and Diagnostics of SARS-CoV-2 Biomarkers.Analytical chemistry · 2026Article
- Assessment of Residual-Serum SARS-CoV-2-N-Antigen Testing for Hospital Surveillance in Germany.Journal of medical virology · 2026Article
- Rational design and high-yield expression of SARS-CoV-2 nucleocapsid antigen for a sensitive and specific in-house ELISA.BMC biotechnology · 2026Article
- Article
- Expression, Purification, and Application of SARS-CoV-2 Nucleocapsid Protein for Serological Detection of IgG and IgM Antibodies.Avicenna journal of medical biotechnology · 2026Article
- Occlusion body-incorporated SARS-CoV-2 S-RBD via cypovirus polyhedrin-derived peptide: a novel insect cell-expressed antigen for high-accuracy COVID-19 diagnosis, and humoral immune response and hybrid immunity evaluation.Revista do Instituto de Medicina Tropical de Sao Paulo · 2026Article
- Development of an ELISA Using Recombinant Chimeric SM Protein for Serological Detection of SARS-CoV-2 Antibodies.Methods and protocols · 2025Article
- Development of a Novel Indirect ELISA Assay for the Detection of SARS-CoV-2 IgG Antibodies Using a Highly Sensitive RBD -Nucleoprotein Fusion Antigen.Archives of Razi Institute · 2025Article
- Stain-free artificial intelligence-assisted light microscopy for the identification of leukocyte morphology change in presence of bacteria.Frontiers in bioinformatics · 2025Article
- Novel Strategies to Profile SARS-CoV-2 and Human Lung Proteome: Inflammatory Pathways in the Spotlight.BioMed research international · 2025Review
- Persistent Post-COVID-19 Olfactory Dysfunction and Its Association with Autonomic Nervous System Function: A Case-Control Study.Diseases (Basel, Switzerland) · 2024Article
- Electrochemical Immunosensors on Laser-Induced Graphene Platforms for Monitoring of Anti-RBD Antibodies After SARS-CoV-2 Infection.Biosensors · 2024Article
- Unveiling the Quest: Crafting an Enzyme-Linked Immunosorbent Assay (ELISA) Technique to Uncover COVID-19 Antibodies.Cureus · 2024Review
- Rapid assays of SARS-CoV-2 virus and noble biosensors by nanomaterials.Nano convergence · 2024Review
- The role of metagenomic next-generation sequencing in diagnosing and managing post-kidney transplantation infections.Frontiers in cellular and infection microbiology · 2024Review
- Article
- Transient Expression in HEK-293 Cells in Suspension Culture as a Rapid and Powerful Tool: SARS-CoV-2 N and Chimeric SARS-CoV-2N-CD154 Proteins as a Case Study.Biomedicines · 2023Article
- Individual Immune Response to SARS-CoV-2 Infection-The Role of Seasonal Coronaviruses and Human Leukocyte Antigen.Biology · 2023Article
- Comparison between Neutralization Capacity of Antibodies Elicited by COVID-19 Natural Infection and Vaccination in Indonesia: A Prospective Cohort.Antibodies (Basel, Switzerland) · 2023Article
Corrections and comments
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Authors and funding
16 authors at 5 institutions in 1 country.
Funding
Abstract
backgroundThe severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has triggered the worldwide coronavirus disease 2019 (COVID-19) pandemic. Serological assays for the detection of SARS-CoV-2 infections are important to understand the immune response in patients and to obtain epidemiological data about the number of infected people, especially to identify asymptomatic persons not aware of a past infection.
methodsWe recombinantly produced SARS-CoV-2 nucleocapsid (N)-protein in Escherichia coli. We used the purified protein to develop an indirect enzyme-linked immunosorbent assay (ELISA) for the detection of SARS-CoV-2 specific antibodies. This ELISA method was optimized and validated with serum samples collected from 113 patients with RT-PCR-confirmed SARS-CoV-2 infections including hospitalized COVID-19 patients and 1500 control sera mostly collected before 2015 with different clinical background.
resultsThe optimized N-protein-ELISA provided a sensitivity of 89.7% (n = 68) for samples collected from patients with confirmed SARS-CoV-2 infections and mild to severe symptoms more than 14 days after symptom onset or a positive PCR test. The antibody levels remained low for serum samples collected in the first six days (n = 23) and increased in the second week (n = 22) post symptom onset or PCR confirmation. At this early phase, the ELISA provided a sensitivity of 39.1% and 86.4%, respectively, reflecting the time of an IgG immune response against pathogens. The assay specificity was 99.3% (n = 1500; 95% CI 0.995-0.999). Serum samples from persons with confirmed antibody titers against human immunodeficiency viruses 1/2, parvovirus B19, hepatitis A/B virus, cytomegalovirus, Epstein Barr virus, and herpes simplex virus were tested negative.
conclusionsWe conclude that the N-protein-based ELISA developed here is well suited for the sensitive and specific serological detection of SARS-CoV-2 specific IgG antibodies in human serum for symptomatic infections. It may also prove useful to identify previous SARS-CoV-2 infections in vaccinated people, as all currently approved vaccines rely on the SARS-CoV-2 spike (S-) protein.
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