The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.
Single-Step, Salt-Aging-Free, and Thiol-Free Freezing Construction of AuNP-Based Bioprobes for Advancing CRISPR-Based Diagnostics
Abstract
The recently reported freezing-based labeling method for constructing DNA-AuNP probes is rapid but still requires thiol modification. Here, we evaluated a poly(A)-tagged DNA sequence using the freezing-based labeling method, and the results demonstrated that approximately 10 A bases at the sequence ends are essential. More detailed observations revealed that some DNA sequences tend to form secondary structures and thus shield exposed A bases, resulting in inefficient or failed labeling. However, successful labeling was restored by simply increasing the poly(A)-base number. Building on these discoveries, we developed three kinds of AuNP-based bioprobes, DNA-AuNP, RNA-AuNP, and DNA-enzyme-AuNP, using the freezing-based labeling method. This method was completed in a single mixing step with no need for thiol modification, representing one of the most convenient and lowest cost AuNP bioprobe labeling techniques ever reported. In addition, the resulting AuNP bioprobes were further used to advance CRISPR-based diagnostics through the development of user-friendly colorimetric, fluorescence, and lateral flow detection strategies.
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Metadata
- Authors
- Hu, M., Yuan, C., Tian, T., Wang, X., Sun, J., Xiong, E., & Zhou, X.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2020-03-30
- Volume
- 142
- Issue
- 16
- Pages
- 7506-7513
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W3013481804
- Cited by
- 267
- References
- 43
- FWCI
- 10.03
- Type
- journal article
- Language
- en
- Open access
- closed
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