Affiliation:
1. School of Electronic and Computer Engineering Peking University Shenzhen 518055 China
2. State Key Laboratory of Chemical Oncogenomics School of Chemical Biology and Biotechnology Peking University Shenzhen 518055 China
3. Department of Gynecology Shenzhen People's Hospital (The Second Clinical Medical College Jinan University The First Affiliated Hospital Southern University of Science and Technology) Shenzhen Guangdong 518020 China
4. Pingshan Translational Medicine Center Shenzhen Bay Laboratory Shenzhen 518055 China
Abstract
AbstractUltrasensitive identification of biomarkers in biofluids is essential for the precise diagnosis of diseases. For the gold standard approaches, polymerase chain reaction and enzyme‐linked immunosorbent assay, cumbersome operational steps hinder their point‐of‐care applications. Here, a bionic biomarker entrapment system (BioES) is implemented, which employs a multi‐body Y‐shaped tetrahedral DNA probe immobilized on carbon nanotube transistors. Clinical identification of endometriosis is successfully realized by detecting an estrogen receptor, ERβ, from the lesion tissue of endometriosis patients and establishing a standard diagnosis procedure. The multi‐body Y‐shaped BioES achieves a theoretical limit of detection (LoD) of 6.74 aM and a limit of quantification of 141 aM in a complex protein milieu. Furthermore, the BioES is optimized into a multi‐site recognition module for enhanced binding efficiency, realizing the first identification of monkeypox virus antigen A35R and unamplified detection of circulating tumor DNA of breast cancer in serum. The rigid and compact probe framework with synergy effect enables the BioES to target A35R and DNA with a LoD down to 991 and 0.21 aM, respectively. Owing to its versatility for proteins and nucleic acids as well as ease of manipulation and ultra‐sensitivity, the BioES can be leveraged as an all‐encompassing tool for population‐wide screening of epidemics and clinical disease diagnosis.
Funder
Shenzhen Fundamental Research Program
National Natural Science Foundation of China
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
3 articles.
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