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Cited by 334

The DOI matches its Crossref record; 50 of the 50 references it cites were found in a registry or an index.

Metal–Organic Framework-Functionalized Paper-Based Electrochemical Biosensor for Ultrasensitive Exosome Assay

Liu, Xiaojuan, Gao, Xin, Yang, Limin, Zhao, Yuecan, Li, Feng·2021·Analytical Chemistry

Abstract

The exosome has emerged as a promising noninvasive biomarker for the early diagnosis of cancer. Therefore, it is highly desirable to develop simple, inexpensive, and user-friendly biosensors for convenient, sensitive, and quantitative exosome assay. Herein, we developed a simple and cost-efficient electrochemical biosensor by combining a metal–organic framework (MOF)-functionalized paper and a screen-printed electrode (SPE) for portable, ultrasensitive, and quantitative determination of cancer-derived exosomes. In principle, the biosensor relied on recognition of the exosome by Zr-MOFs and aptamer to initiate the hybridization chain reaction (HCR) and the formation of DNAzyme for signal amplification. Benefiting from the high signal amplification ability of HCR, the label-free paper-based biosensor is capable of ultrasensitive exosome assay with a detection limit down to 5 × 10 3 particles/mL, which is superior to that of most reported methods. Moreover, the proposed paper-based biosensor possessed the advantages of low cost, simple operation, and high sensitivity, making it affordable and deliverable for point-of-care (POC) diagnosis in resource-limited settings.

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Metadata

Authors
Liu, X., Gao, X., Yang, L., Zhao, Y., & Li, F.
Venue
Analytical Chemistry
Published
2021-08-19
Volume
93
Issue
34
Pages
11792-11799
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W3193569631
Cited by
334
References
50
FWCI
14.62
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Metal–Organic Framework-Functionalized Paper-Based Electrochemical Biosensor for Ultrasensitive Exosome Assay. https://app.cochat.ai/papers/10.1021/acs.analchem.1c02286
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Liu, X., Gao, X., Yang, L., Zhao, Y., & Li, F. (2021). Metal–Organic Framework-Functionalized Paper-Based Electrochemical Biosensor for Ultrasensitive Exosome Assay. Analytical Chemistry. https://doi.org/10.1021/acs.analchem.1c02286

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