A rapid and affordable point of care test for antibodies against SARS-CoV-2 based on hemagglutination and artificial intelligence interpretation
© 2021. The Author(s)..
Diagnostic tests that detect antibodies (AB) against SARS-CoV-2 for evaluation of seroprevalence and guidance of health care measures are important tools for managing the COVID-19 pandemic. Current tests have certain limitations with regard to turnaround time, costs and availability, particularly in point-of-care (POC) settings. We established a hemagglutination-based AB test that is based on bi-specific proteins which contain a dromedary-derived antibody (nanobody) binding red blood cells (RBD) and a SARS-CoV-2-derived antigen, such as the receptor-binding domain of the Spike protein (Spike-RBD). While the nanobody mediates swift binding to RBC, the antigen moiety directs instantaneous, visually apparent hemagglutination in the presence of SARS-CoV-2-specific AB generated in COVID-19 patients or vaccinated individuals. Method comparison studies with assays cleared by emergency use authorization demonstrate high specificity and sensitivity. To further increase objectivity of test interpretation, we developed an image analysis tool based on digital image acquisition (via a cell phone) and a machine learning algorithm based on defined sample-training and -validation datasets. Preliminary data, including a small clinical study, provides proof of principle for test performance in a POC setting. Together, the data support the interpretation that this AB test format, which we refer to as 'NanoSpot.ai', is suitable for POC testing, can be manufactured at very low costs and, based on its generic mode of action, can likely be adapted to a variety of other pathogens.
| Errataetall: | |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:11 |
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| Enthalten in: |
Scientific reports - 11(2021), 1 vom: 30. Dez., Seite 24507 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Redecke, Vanessa [VerfasserIn] |
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| Links: |
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| Themen: |
Antibodies, Viral |
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| Anmerkungen: |
Date Completed 18.01.2022 Date Revised 02.04.2024 published: Electronic UpdateOf: Res Sq. 2021 Jul 20;:. - PMID 34312614 Citation Status MEDLINE |
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| doi: |
10.1038/s41598-021-04298-1 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM335056911 |
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| 245 | 1 | 2 | |a A rapid and affordable point of care test for antibodies against SARS-CoV-2 based on hemagglutination and artificial intelligence interpretation |
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| 500 | |a published: Electronic | ||
| 500 | |a UpdateOf: Res Sq. 2021 Jul 20;:. - PMID 34312614 | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2021. The Author(s). | ||
| 520 | |a Diagnostic tests that detect antibodies (AB) against SARS-CoV-2 for evaluation of seroprevalence and guidance of health care measures are important tools for managing the COVID-19 pandemic. Current tests have certain limitations with regard to turnaround time, costs and availability, particularly in point-of-care (POC) settings. We established a hemagglutination-based AB test that is based on bi-specific proteins which contain a dromedary-derived antibody (nanobody) binding red blood cells (RBD) and a SARS-CoV-2-derived antigen, such as the receptor-binding domain of the Spike protein (Spike-RBD). While the nanobody mediates swift binding to RBC, the antigen moiety directs instantaneous, visually apparent hemagglutination in the presence of SARS-CoV-2-specific AB generated in COVID-19 patients or vaccinated individuals. Method comparison studies with assays cleared by emergency use authorization demonstrate high specificity and sensitivity. To further increase objectivity of test interpretation, we developed an image analysis tool based on digital image acquisition (via a cell phone) and a machine learning algorithm based on defined sample-training and -validation datasets. Preliminary data, including a small clinical study, provides proof of principle for test performance in a POC setting. Together, the data support the interpretation that this AB test format, which we refer to as 'NanoSpot.ai', is suitable for POC testing, can be manufactured at very low costs and, based on its generic mode of action, can likely be adapted to a variety of other pathogens | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, N.I.H., Extramural | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Antibodies, Viral |2 NLM | |
| 650 | 7 | |a Spike Glycoprotein, Coronavirus |2 NLM | |
| 700 | 1 | |a Tawaratsumida, Kazuki |e verfasserin |4 aut | |
| 700 | 1 | |a Larragoite, Erin T |e verfasserin |4 aut | |
| 700 | 1 | |a Williams, Elizabeth S C P |e verfasserin |4 aut | |
| 700 | 1 | |a Planelles, Vicente |e verfasserin |4 aut | |
| 700 | 1 | |a Spivak, Adam M |e verfasserin |4 aut | |
| 700 | 1 | |a Hirayama, Lincoln |e verfasserin |4 aut | |
| 700 | 1 | |a Elgort, Marc |e verfasserin |4 aut | |
| 700 | 1 | |a Swenson, Shane |e verfasserin |4 aut | |
| 700 | 1 | |a Smith, Rick |e verfasserin |4 aut | |
| 700 | 1 | |a Worthen, Bryan |e verfasserin |4 aut | |
| 700 | 1 | |a Zimmerman, Russ |e verfasserin |4 aut | |
| 700 | 1 | |a Slev, Patricia |e verfasserin |4 aut | |
| 700 | 1 | |a Cahoon, Ben |e verfasserin |4 aut | |
| 700 | 1 | |a Astill, Mark |e verfasserin |4 aut | |
| 700 | 1 | |a Häcker, Hans |e verfasserin |4 aut | |
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