A colloidal gold immunochromatographic assay (ICA) based on a dual-antibody sandwich method was developed for the rapid and convenient detection of () antigens in the early stages of infection. Monoclonal antibodies designed as 5B3 targeting the conserved region of 56 kDa outer membrane protein in various strains of were generated through cell fusion and screening techniques and combined with previously prepared polyclonal antibodies as detection antibodies to establish the ICA. Colloidal gold and polyclonal antibody-colloidal gold complexes were synthesized under optimized conditions. The nitrocellulose membrane was treated with 5B3 monoclonal antibody and goat anti-mouse antibody as the test and control lines, respectively. The ICA demonstrated robust sensitivity, with a minimum detection limit of 70.5 ng for the 56 kDa recombinant of the Gilliam strain. Furthermore, a detection limit of 1 × 10 copies/μL DNA of was determined for both PT and SJ infected cell strains by constructing a relationship between cell number and copy number of the pathogen using a quantitative PCR-based standard curve. The assay also exhibited exceptional specificity, with no false positives observed against other bacterial species, including , , , and . In summary, an ICA which is sensitive, specific, and easy to operate was successfully established for the detection of in scrub typhus, potentially enabling early rapid point-of-care diagnosis of scrub typhus.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11774921 | PMC |
| http://dx.doi.org/10.3389/fmicb.2024.1521015 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Development of a colloidal gold immunochromatographic assay utilizing dual-antibody sandwich method for detecting .
Front Microbiol
January 2025
College Food Science and Light Industry, Nanjing Tech University, Nanjing, China.
A colloidal gold immunochromatographic assay (ICA) based on a dual-antibody sandwich method was developed for the rapid and convenient detection of () antigens in the early stages of infection. Monoclonal antibodies designed as 5B3 targeting the conserved region of 56 kDa outer membrane protein in various strains of were generated through cell fusion and screening techniques and combined with previously prepared polyclonal antibodies as detection antibodies to establish the ICA. Colloidal gold and polyclonal antibody-colloidal gold complexes were synthesized under optimized conditions.
View Article and Find Full Text PDFResearch on mixed sample test for the rapid detection of rice stripe virus and southern rice black-streaked dwarf virus in vector.
Virology
January 2025
Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu Province, China; International Rice Research Institute and Jiangsu Academy of Agricultural Sciences Joint Laboratory, Nanjing, 210014, Jiangsu Province, China. Electronic address:
Rice is a staple food in East and Southeast Asian countries, rice disease surveillance and warning is particularly important. Rice stripe disease and southern rice black-streaked dwarf virus disease are the insect-borne viral diseases that easily break out and quickly become epidemic. It is important to improve the efficiency of the virus detection method.
View Article and Find Full Text PDF2D wrinkle assisted zigzag plasmonic chains for isotropic SERS enhancement.
Sci Rep
January 2025
Institute of Physical Chemistry and Polymer Physics, Leibniz-Institut für Polymerforschung Dresden e.V. (IPF), 01069, Dresden, Germany.
Template-assisted colloidal self-assembly has gained significant attention due to its flexibility and versatility. By precisely controlling the shape of the template, it is possible to achieve custom-designed nanoparticle assemblies. However, a major challenge remains in fabricating these templates over large areas at a low cost.
View Article and Find Full Text PDFMulti-group structure analysis and molecular docking of aptamers and small molecules: A case study of chloramphenicol.
Biochem Biophys Res Commun
January 2025
College of Animal Science and Technology, Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Guangxi University, Nanning, 530004, Guangxi, China. Electronic address:
Aptamers, a kind of short nucleotide sequences with high specificity and affinity with targets, have attracted extensive attention in recent years. Molecular docking method (MDM) is the most common method to explore the binding mode and recognition mechanism of aptamers and small molecules, which generally use the target to dock with the highest scoring tertiary structural model of the aptamer, and the highest scoring result is used as the predicted model. However, this prediction results may miss out the true interaction pattern due to the fact that aptamers are not completely rigid and the natural aptamers conformations are not in a single state.
View Article and Find Full Text PDFSequential Growth of Quantized Peptide Brushes on Colloidal Gold.
Langmuir
January 2025
Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States.
We synthesized rigid, macromolecular brushes with well-defined and quantized brush lengths on a gold nanoparticle substrate by using a macromolecular "grafting from" approach. The macromonomers used in these brushes were thiol- and maleimide-functionalized peptide coiled coil "bundlemers" that fold into discrete 4 nm × 2 nm (length × diameter) cylindrical nanoparticles. With each added peptide macromonomer layer, brush thickness increased by approximately the length of a single bundlemer nanoparticle.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!