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Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples

While identifying acute HIV infection is critical to providing prompt treatment to HIV-positive individuals and preventing transmission, existing laboratory-based testing methods are too complex to perform at the point of care. Specifically, molecular techniques can detect HIV RNA within 8–10 days o...

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Autores principales: Phillips, Elizabeth A., Moehling, Taylor J., Ejendal, Karin F. K., Hoilett, Orlando S., Byers, Kristin M., Basing, Laud Anthony, Jankowski, Lauren A., Bennett, Jackson B., Lin, Li-Kai, Stanciu, Lia A., Linnes, Jacqueline C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7384476/
https://www.ncbi.nlm.nih.gov/pubmed/31539001
http://dx.doi.org/10.1039/c9lc00506d
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author Phillips, Elizabeth A.
Moehling, Taylor J.
Ejendal, Karin F. K.
Hoilett, Orlando S.
Byers, Kristin M.
Basing, Laud Anthony
Jankowski, Lauren A.
Bennett, Jackson B.
Lin, Li-Kai
Stanciu, Lia A.
Linnes, Jacqueline C.
author_facet Phillips, Elizabeth A.
Moehling, Taylor J.
Ejendal, Karin F. K.
Hoilett, Orlando S.
Byers, Kristin M.
Basing, Laud Anthony
Jankowski, Lauren A.
Bennett, Jackson B.
Lin, Li-Kai
Stanciu, Lia A.
Linnes, Jacqueline C.
author_sort Phillips, Elizabeth A.
collection PubMed
description While identifying acute HIV infection is critical to providing prompt treatment to HIV-positive individuals and preventing transmission, existing laboratory-based testing methods are too complex to perform at the point of care. Specifically, molecular techniques can detect HIV RNA within 8–10 days of transmission but require laboratory infrastructure for cold-chain reagent storage and extensive sample preparation performed by trained personnel. Here, we demonstrate our point-of-care microfluidic rapid and autonomous analysis device (microRAAD) that automatically detects HIV RNA from whole blood. Inside microRAAD, we incorporate vitrified amplification reagents, thermally-actuated valves for fluidic control, and a temperature control circuit for low-power heating. Reverse transcription loop-mediated isothermal amplification (RT-LAMP) products are visualized using a lateral flow immunoassay (LFIA), resulting in an assay limit of detection of 100 HIV-1 RNA copies when performed as a standard tube reaction. Even after three weeks of room-temperature reagent storage, microRAAD automatically isolates the virus from whole blood, amplifies HIV-1 RNA, and transports amplification products to the internal LFIA, detecting as few as 3 × 10(5) HIV-1 viral particles, or 2.3 × 10(7) virus copies per mL of whole blood, within 90 minutes. This integrated microRAAD is a low-cost and portable platform to enable automated detection of HIV and other pathogens at the point of care.
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spelling pubmed-73844762020-07-27 Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples Phillips, Elizabeth A. Moehling, Taylor J. Ejendal, Karin F. K. Hoilett, Orlando S. Byers, Kristin M. Basing, Laud Anthony Jankowski, Lauren A. Bennett, Jackson B. Lin, Li-Kai Stanciu, Lia A. Linnes, Jacqueline C. Lab Chip Article While identifying acute HIV infection is critical to providing prompt treatment to HIV-positive individuals and preventing transmission, existing laboratory-based testing methods are too complex to perform at the point of care. Specifically, molecular techniques can detect HIV RNA within 8–10 days of transmission but require laboratory infrastructure for cold-chain reagent storage and extensive sample preparation performed by trained personnel. Here, we demonstrate our point-of-care microfluidic rapid and autonomous analysis device (microRAAD) that automatically detects HIV RNA from whole blood. Inside microRAAD, we incorporate vitrified amplification reagents, thermally-actuated valves for fluidic control, and a temperature control circuit for low-power heating. Reverse transcription loop-mediated isothermal amplification (RT-LAMP) products are visualized using a lateral flow immunoassay (LFIA), resulting in an assay limit of detection of 100 HIV-1 RNA copies when performed as a standard tube reaction. Even after three weeks of room-temperature reagent storage, microRAAD automatically isolates the virus from whole blood, amplifies HIV-1 RNA, and transports amplification products to the internal LFIA, detecting as few as 3 × 10(5) HIV-1 viral particles, or 2.3 × 10(7) virus copies per mL of whole blood, within 90 minutes. This integrated microRAAD is a low-cost and portable platform to enable automated detection of HIV and other pathogens at the point of care. 2019-10-09 /pmc/articles/PMC7384476/ /pubmed/31539001 http://dx.doi.org/10.1039/c9lc00506d Text en This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Phillips, Elizabeth A.
Moehling, Taylor J.
Ejendal, Karin F. K.
Hoilett, Orlando S.
Byers, Kristin M.
Basing, Laud Anthony
Jankowski, Lauren A.
Bennett, Jackson B.
Lin, Li-Kai
Stanciu, Lia A.
Linnes, Jacqueline C.
Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples
title Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples
title_full Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples
title_fullStr Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples
title_full_unstemmed Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples
title_short Microfluidic rapid and autonomous analytical device (microRAAD) to detect HIV from whole blood samples
title_sort microfluidic rapid and autonomous analytical device (microraad) to detect hiv from whole blood samples
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7384476/
https://www.ncbi.nlm.nih.gov/pubmed/31539001
http://dx.doi.org/10.1039/c9lc00506d
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