DNAzyme-based ultrasensitive immunoassay: Recent advances and emerging trends

Biosens Bioelectron. 2024 Feb 9;251:116122. doi: 10.1016/j.bios.2024.116122. Online ahead of print.ABSTRACTImmunoassay, as the most commonly used method for protein detection, is simple to operate and highly specific. Sensitivity improvement is always the thrust of immunoassays, especially for the detection of trace quantities. The emergence of artificial enzyme, i.e., DNAzyme, provides a novel approach to improve the detection sensitivity of immunoassay. Simultaneously, its advantages of simple synthesis and high stability enable low cost, broad applicability and long shelf life for immunoassay. In this review, we summarized the recent advances in DNAzyme-based immunoassay. First, we summarized the existing different DNAzymes based on their catalytic activities. Next, the common signal amplification strategies used for DNAzyme-based immunoassays were reviewed to cater to diverse detection requirements. Following, the wide applications in disease diagnosis, environmental monitoring and food safety were discussed. Finally, the current challenges and perspectives on the future development of DNAzyme-based immunoassays were also provided.PMID:38382271 | DOI:10.1016/j.bios.2024.116122
Source: Biosensors and Bioelectronics - Category: Biotechnology Authors: Source Type: research