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A sample-to-answer ...
A sample-to-answer COVID-19 diagnostic device based on immiscible filtration and CRISPR-Cas12a-assisted detection
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Ngamsom, Bongkot (författare)
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- Iles, Alexander, 1971- (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),University of Hull, UK
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Kamita, Moses (författare)
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Kimani, Racheal (författare)
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Wakaba, Patrick (författare)
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- Rodriguez-Mateos, Pablo, 1995- (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Mungai, Mary (författare)
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Dyer, Charlotte E. (författare)
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Walter, Cheryl (författare)
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Gitaka, Jesse (författare)
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- Pamme, Nicole (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),University of Hull, UK
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Talanta Open. - : Elsevier BV. - 2666-8319. ; 6
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In response to the ongoing coronavirus disease 2019 (COVID-19) pandemic and disparities of vaccination coverage in low-and middle-income countries, it is vital to adopt a widespread testing and screening programme, combined with contact tracing, to monitor and effectively control the infection dispersion in areas where medical resources are limited. This work presents a lab-on-a-chip device, namely ‘IFAST-LAMP-CRISPR’, as an affordable, rapid and high-precision molecular diagnostic means for detection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). The herein proposed ‘sample-to-answer’ platform integrates RNA extraction, amplification and molecular detection with lateral flow readout in one device. The microscale dimensions of the device containing immiscible liquids, coupled with the use of silica paramagnetic beads and guanidine hydrochloride, streamline sample preparation (including RNA extraction, concentration and purification) in 15 min with minimal hands-on steps. The pre-amplification in combination with CRISPR-Cas12a detection assays targeting the nucleoprotein (N) gene achieved visual identification of ≥ 470 copies mL−1 genomic SARS-CoV-2 samples in 45 min. On-chip assays showed the ability to isolate and detect SARS-CoV-2 RNA from 100 genome copies mL−1 of replication-deficient viral particles in 1 h. This simple, affordable and integrated platform demonstrated a visual, faster, and yet specificity- and sensitivity-comparable alternative to the costly gold-standard reverse transcription-polymerase chain reaction (RT-PCR) assay, requiring only a simple heating source. Initial testing illustrates the platform viability both on nasopharyngeal swab and saliva samples collected using the easily accessible Swan-brand cigarette filter, providing a complete workflow for COVID-19 diagnostics in low-resource settings.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Medicinsk bioteknologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Medical Biotechnology (hsv//eng)
Nyckelord
- COVID-19
- CRISPR-Cas
- Diagnostics
- Immiscible filtration
- Point-of-care
- SARS-CoV-2
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Ngamsom, Bongkot
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Iles, Alexander, ...
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Kamita, Moses
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Kimani, Racheal
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Wakaba, Patrick
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Rodriguez-Mateos ...
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visa fler...
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Mungai, Mary
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Dyer, Charlotte ...
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Walter, Cheryl
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Gitaka, Jesse
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Pamme, Nicole
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visa färre...
- Om ämnet
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- MEDICIN OCH HÄLSOVETENSKAP
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MEDICIN OCH HÄLS ...
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och Medicinsk biotek ...
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och Medicinsk biotek ...
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Talanta Open
- Av lärosätet
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Stockholms universitet