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Zhou X, Zamani M, Austin K, De Bock M, Chaj Ullola J, Riki S, Furst AL. Improving electrochemical hybridization assays with restriction enzymes. Chem Commun (Camb) 2024; 60:1948-1951. [PMID: 38284146 PMCID: PMC10863419 DOI: 10.1039/d3cc06192b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 01/15/2024] [Indexed: 01/30/2024]
Abstract
Nucleic acids in blood are early indicators of disease that could be detected by point-of-care biosensors if sufficiently sensitive and facile sensors existed. Electrochemical hybridization assays are sensitive and specific but are limited to very short nucleic acids. We have developed a restriction enzyme-assisted electrochemical hybridization (REH) assay for improved nucleic acid detection. By incorporating target-specific restriction enzymes, we detect long nucleic acids, with performance dependent on the location of the cut site relative to the electrode surface. Thus, we have further established guidelines for REH design to serve as a generalizable platform for robust electrochemical detection of long nucleic acids.
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Affiliation(s)
- Xingcheng Zhou
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Marjon Zamani
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
- Center for Environmental Health Sciences, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Katherine Austin
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Marieke De Bock
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Joshua Chaj Ullola
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Smah Riki
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
| | - Ariel L Furst
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
- Center for Environmental Health Sciences, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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