期刊
THERANOSTICS
卷 9, 期 17, 页码 4849-4859出版社
IVYSPRING INT PUBL
DOI: 10.7150/thno.35824
关键词
lateral flow microarray; core-shell SERS nanotags; multiplex nucleic acids detection; respiratory tract infection (RTI)
资金
- National Key Research and Development Program of China [2018YFF0215200, 2017YFA0205700]
- National Natural Science Foundation of China [81827901, 21327902, 61850410528]
- Natural Science Foundation of Jiangsu Province [BK2014021828, BE2016002, BK20170907]
- China Postdoctoral Science Foundation [2018M642132]
- Fundamental Research Funds for the Central Universities
- Six Talent Peaks Project of Jiangsu Province
- Southeast University [2242017K3DN26]
- Nanjing Medical University [2242017K3DN26]
- Fundamental Research Project of Shenzhen Science and Technology Innovation Committee [JCYJ20180306174552939]
Respiratory tract infections (RTIs) are severe acute infectious diseases, which require the timely and accurate identification of the pathogens involved so that the individual treatment plan can be selected, including optimized use of antibiotics. However, high throughput and ultrasensitive quantification of multiple nucleic acids is a challenge in a point of care testing (POCT) device. Methods: Herein, we developed a 2x3 microarray on a lateral flow strip with surface enhanced Raman scattering (SERS) nanotags encoding the nucleic acids of 11 common RTI pathogens. On account of the signal magnification of encoded SERS nanotags in addition to the high surface area to volume ratio of the nitrocellulose (NC) membrane, rapid quantification of the 11 pathogens with a broad linear dynamic range (LDR) and ultra-high sensitivity was achieved on one lateral flow microarray. Results: The limit of detection (LOD) for influenza A, parainfluenza 1, parainfluenza 3, respiratory syncytial virus, coxiella burnetii, legionella pneumophila, influenza B, parainfluenza 2, adenovirus, chlamydophila pneumoniae, and mycoplasma pneumoniae were calculated to be 0.031 pM, 0.030 pM, 0.038 pM, 0.038 pM, 0.040 pM, 0.039 pM, 0.035 pM, 0.032 pM, 0.040 pM, 0.039 pM, and 0.041 pM, respectively. The LDR of measurement of the target nucleic acids of the eleven RTI pathogens were 1 pM-50 nM, which span 5 orders of magnitude. Conclusions: We anticipate this novel approach could be widely adopted in the early and precise diagnosis of RTI and other diseases.
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