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Song F, Shen Y, Wei Y, Yang C, Ge X, Wang A, Li C, Wan Y, Li J. Botulinum toxin as an ultrasensitive reporter for bacterial and SARS-CoV-2 nucleic acid diagnostics. Biosens Bioelectron 2021; 176:112953. [PMID: 33418182 PMCID: PMC7836976 DOI: 10.1016/j.bios.2020.112953] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 01/18/2023]
Abstract
The rapid identification of pathogenic microorganisms plays a crucial role in the timely diagnosis and treatment strategies during a global pandemic, especially in resource-limited area. Herein, we present a sensitive biosensor strategy depended on botulinum neurotoxin type A light chain (BoNT/A LC) activated complex assay (BACA). BoNT/A LC, the surrogate of BoNT/A which embodying the most potent biological poisons, could serve as an ultrasensitive signal reporter with high signal-to-noise ratio to avoid common strong background response, poor stability and low intensity of current biosensor methods. A nanoparticle hybridization system, involving specific binding probes that recognize pathogenic 16S rRNAs or SARS-CoV-2 gene site, was developed to measure double-stranded biotinylated target DNA containing a single-stranded overhang using Fluorescence Resonance Energy Transfer (FRET)-based assay and colorimetric method. The method is validated widely by six different bacteria strains and severe acute respiratory related coronavirus 2 (SARS-CoV-2) nucleic acid, demonstrating a single cell or 1 aM nucleic acid detecting sensitivity. This detection strategy offers a solution for general applications and has a great prospect to be a simple instrument-free colorimetric tool, especially when facing public health emergency.
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Affiliation(s)
- Fengge Song
- State Key Laboratory of Marine Resource Utilization in South China Sea, Marine College, Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, 56 Renmin Road, Haikou, 570228, China
| | - Yuanyuan Shen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Marine College, Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, 56 Renmin Road, Haikou, 570228, China
| | - Yangdao Wei
- State Key Laboratory of Marine Resource Utilization in South China Sea, Marine College, Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, 56 Renmin Road, Haikou, 570228, China
| | - Chunrong Yang
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Xiaolin Ge
- State Key Laboratory of Marine Resource Utilization in South China Sea, Marine College, Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, 56 Renmin Road, Haikou, 570228, China
| | - Aimin Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Marine College, Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, 56 Renmin Road, Haikou, 570228, China
| | - Chaoyang Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Marine College, Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, 56 Renmin Road, Haikou, 570228, China
| | - Yi Wan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Marine College, Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, 56 Renmin Road, Haikou, 570228, China; Shandong Key Laboratory of Corrosion Science, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China.
| | - Jinghong Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
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Nandy P, Gonzalez EA, Lucas AD, Hitchins VM. The presence of fecal test soil protects bacteria during cleaning/disinfection. J Biomed Mater Res B Appl Biomater 2018; 107:1706-1710. [DOI: 10.1002/jbm.b.34263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 08/23/2018] [Accepted: 09/08/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Poulomi Nandy
- Laboratory of Microbiology and Infection Control, Office of Science and Engineering LaboratoriesCenter for Devices and Radiological Health, US Food and Drug Administration Silver Spring Maryland 20993
| | - Elizabeth A. Gonzalez
- Laboratory of Microbiology and Infection Control, Office of Science and Engineering LaboratoriesCenter for Devices and Radiological Health, US Food and Drug Administration Silver Spring Maryland 20993
| | - Anne D. Lucas
- Laboratory of Microbiology and Infection Control, Office of Science and Engineering LaboratoriesCenter for Devices and Radiological Health, US Food and Drug Administration Silver Spring Maryland 20993
| | - Victoria M. Hitchins
- Laboratory of Microbiology and Infection Control, Office of Science and Engineering LaboratoriesCenter for Devices and Radiological Health, US Food and Drug Administration Silver Spring Maryland 20993
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Designing for cleanability: The effects of material, surface roughness, and the presence of blood test soil and bacteria on devices. Am J Infect Control 2017; 45:194-196. [PMID: 27776820 DOI: 10.1016/j.ajic.2016.07.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 07/13/2016] [Accepted: 07/13/2016] [Indexed: 11/24/2022]
Abstract
Cleaning reusable medical devices removes organic and inorganic soil, which allows for effective disinfection and sterilization. However, it is not always clear what variables to consider when validating cleaning. This study compared the ability of 3 different cleaning agents (ie, water, alcohol, and bleach) to remove bacteria (ie, vegetative and spores) and artificial blood test soil from 2 common device materials: polypropylene and ultra-high-molecular-weight polyethylene. There was a complex interaction between bacteria, soil, and surface roughness.
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