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- W3102956557 endingPage "114020" @default.
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- W3102956557 abstract "Rapid diagnostic tests (RDTs) are critical to the success of malaria elimination campaigns. These tests are rapid, user-friendly, and field-deployable to resource-limited regions. However, RDTs demonstrate poor sensitivity because they can only tolerate a small (5 μL) volume of blood, which limits the amount of protein biomarker delivered to the test. We have developed the Antibody-free Dual-biomarker Rapid Enrichment Workflow (AnDREW) for purifying histidine-rich protein 2 (HRP2) and Plasmodium lactate dehydrogenase (PLDH) from large volume (150 μL) blood samples. We used Zn(II)NTA and aptamer-conjugated magnetic beads to capture HRP2 and PLDH, respectively. Both biomarkers were then eluted into RDT-compatible volumes using ethylene diamine tetraacetic acid (EDTA). We optimized both bead conjugates individually by enzyme-linked immunosorbent assays (ELISAs) and then combined the optimized capture and elution assays for both biomarkers to produce the AnDREW. The AnDREW-enhanced RDTs exhibited a 11-fold and 9-fold improvement in analytical sensitivity for detection of HRP2 and PLDH, respectively, when compared to unenhanced RDTs. Moreover, the limit of detection for PLDH was improved 11-fold for the AnDREW-enhanced RDTs (3.80 parasites/μL) compared to unenhanced RDTs (42.31 parasites/μL). Importantly, the AnDREW utilizes a pan-specific PLDH aptamer and improves upon existing methods by eluting both biomarkers without complexed antibodies." @default.
- W3102956557 created "2020-11-23" @default.
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- W3102956557 date "2021-01-01" @default.
- W3102956557 modified "2023-10-14" @default.
- W3102956557 title "An antibody-free dual-biomarker rapid enrichment workflow (AnDREW) improves the sensitivity of malaria rapid diagnostic tests" @default.
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- W3102956557 doi "https://doi.org/10.1016/j.ab.2020.114020" @default.
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