Aptamer-Linked Photonic Crystal Assay for High-Throughput Screening of HIV and SARS-CoV-2.
Anal Chem
; 95(2): 917-923, 2023 01 17.
Article
in English
| MEDLINE | ID: covidwho-2185424
ABSTRACT
We present a microplate assay for the detection of HIV and SARS-CoV-2 which involves the preadsorption of carboxy-modified polystyrene microspheres to the microplate wells and their self-assembly leading to the formation of a photonic crystal colloidal array (PCCA). PCCA is then cross-linked with amino-modified aptamers selected for viral cell surface glycoproteins, i.e., S1-protein of SARS-CoV-2 and gp120 of the human immunodeficiency virus (HIV), to develop an aptamer-linked photonic crystal assay (ALPA). ALPA is then utilized as a proof-of-concept method for the detection of S1-protein, gp120, and two whole viruses, i.e., SARS-CoV-2 and HIV, as well. The aptamers are stable at room temperature and can bind with the viruses' proteins via hydrogen bonding. This binding leads to color generation from PCCA, and the signal can easily be measured and quantified by a UV/vis spectrometer. The assay carries the advantage of a two-step detection process by the addition of the virus sample directly to a 96-well microplate and incubation of 5 min followed by convenient detection through a UV/vis-spectrometer. The assay does not require any additional reagents and can be customized for similar viruses utilizing specific aptamers targeting their cell surface receptors.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
HIV Infections
/
Aptamers, Nucleotide
/
COVID-19
Type of study:
Diagnostic study
/
Randomized controlled trials
Limits:
Humans
Language:
English
Journal:
Anal Chem
Year:
2023
Document Type:
Article
Affiliation country:
Acs.analchem.2c03467
Similar
MEDLINE
...
LILACS
LIS