Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
CRISPR based nucleic acid detection technology provides a deployable approach to point of care testing. While, there remain challenges limiting its practical applications, such as the need for pre-amplification and the long turnaround time. Here, we present a self-cascade signal amplification method with LwaCas13a and an artificially designed "U" rich RNA of stem-loop structure (URH) for pre-amplification-free ultra-fast and ultra-sensitive point-of-care testing (PASSPORT). The PASSPORT system contains: URH, crRNA targeted the URH, crRNA targeted the interesting RNA, fluorescent RNA reporter and LwaCas13a. The assay realized the detection of 100 copies/mL, within 5 min. The PASSPORT platform was further adopted for the detection of marker gene from SASR-CoV-2 and Severe fever with thrombocytopenia syndrome virus (SFTSV), respectively, and 100% accuracy for the analysis of clinical specimens (100 SASR-CoV-2 specimens and 16 SFTSV specimens) was obtained. Integrated with a lateral flow assay device, this assay could provide an alternative platform for the development of point of care testing (POCT) biosensors. PASSPORT has the potential to enable sensitive, specific, user-friendly, rapid, affordable, equipment-free and point-of-care testing for the purpose of large-scale screening and in case of epidemic outbreak.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.bios.2024.116400 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Rational design of tunable pH switches through shadow-strand hybridization-actuated displacement engineering.
Nucleic Acids Res
September 2025
Key Laboratory of Clinical Laboratory Diagnostics (Chinese Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P. R. China.
Local pH variations play a pivotal role in numerous critical biological processes. However, achieving the tunability and selectivity of pH detection remains a challenge. Here, we present a DNA-based strategy that enables programmable and selective pH responses, which is termed shadow-strand hybridization-actuated displacement engineering (SHADE).
View Article and Find Full Text PDFEnhanced sensitivity detection via orientational labelling of SPA-functionalized magnetic nanoparticles in lateral-flow immunoassays.
Mikrochim Acta
September 2025
Department of Surgical Oncology, Shaanxi Provincial People's Hospital, 256 Friendship West Road, Beilin District, Xi'an, 710068, Shaanxi, China.
Mycoplasma pneumonia, a primary aetiological agent of atypical pneumonia, necessitates the implementation of rapid point-of-care diagnostics. Lateral flow immunoassays (LFIAs) hold promise for point-of-care testing (POCT), yet their sensitivity levels are frequently constrained by probe affinity and matrix interference. We introduce an orientational labelling strategy that employs magnetic nanoparticles (MNPs) functionalized with staphylococcal protein A (SPA) to simultaneously enhance antibody orientation and facilitate magnetic enrichment.
View Article and Find Full Text PDFEndocrinologist-led genomic testing for monogenic diabetes in adult diabetes clinics: a feasibility and outcome study.
Diabetes Res Clin Pract
September 2025
St Vincent's Clinical Campus, School of Clinical Medicine, Faculty of Medicine and Health, University of New South Wales, Wallace Wurth Building (C27), Cnr High St & Botany St, Kensington, Sydney 2052 NSW, Australia; Clinical Genomics, St Vincent's Hospital Sydney, Translational Research Centre, 97-
Aims: Monogenic diabetes (MGD), such as Maturity-Onset Diabetes of the Young (MODY), is under-recognised and under-diagnosed. Accurate diagnosis of MGD requires genetic testing and has important treatment implications. Integrating MGD testing within diabetes clinics can increase testing uptake and MGD diagnosis.
View Article and Find Full Text PDFImpacts of Environmental Distractions and Interruptions on Unsupervised Digital Cognitive Assessments in Older Adults: Cognitive Ecological Momentary Assessment Study.
JMIR Mhealth Uhealth
September 2025
Department of Neurology, School of Medicine, Washington University in St. Louis, 660 South Euclid Avenue, St Louis, MO, 63130, United States, 1 9548065162.
Background: Unsupervised cognitive assessments are becoming commonly used in studies of aging and neurodegenerative diseases. As assessments are completed in everyday environments and without a proctor, there are concerns about how common distractions may impact performance and whether these distractions may differentially impact those experiencing the earliest symptoms of dementia.
Objective: We examined the impact of self-reported interruptions, testing location, and social context during testing on remote cognitive assessments in older adults.
Evaluating the Effect of a Molecular Point-of-Care Test on Acute Respiratory Infections in General Practice: Protocol for a Cluster Randomized Trial.
JMIR Res Protoc
September 2025
Research Unit of General Practice, Department of Public Health, University of Southern Denmark, Odense M, Denmark.
Background: Acute respiratory infections (ARIs) are frequent reasons for medical consultations in general practice and can lead to unnecessary recontacts. Introducing new point-of-care (POC) polymerase chain reaction (PCR) diagnostic equipment may offer an attractive and efficient way of providing a more precise and exact microbial diagnosis. Successful uptake of POC PCR equipment could potentially lead to a reduction in recontacts with benefits for both staff and patients.
View Article and Find Full Text PDF