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Fan Z, Ran Q, Li Y, Xu X, Zheng L, Liu X, Jia K. Surface segregation of rigid polyarylene ether amidoxime on polyurethane nanofiber into hierarchical membranes as substrate of flexible SERS nanosensor for sulfamethoxazole detection. Talanta 2024; 276:126166. [PMID: 38714011 DOI: 10.1016/j.talanta.2024.126166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/08/2024] [Accepted: 04/25/2024] [Indexed: 05/09/2024]
Abstract
Electrospun polymeric nanofibrous membranes are emerging as the promising substrates for preparation of flexible SERS nanosensors due to their intrinsic nanoscale surface roughness, easy scalability as well as rich surface reactivity. Although the nanofiber membranes prepared from high performance thermoplastics exhibit good mechanical stability, the SERS nanosensors based on these substrates normally have lower signal-to-noise ratio because of the interference from background Raman signals of aromatic moieties. Herein, we synthesized an optically transparent polyurethane (PU) and rigid polyarylene ether amidoxime (PEA), which were electrospun into core-shell nanofibers membranes with a "beads-on-web" morphology. Furthermore, the PU-PEA membranes were coated with ultra-thin silver layer and thermally annealed to prepare the flexible SERS nanosensor without any background noises. In addition, the Raman enhancement of SERS nanosensor can be readily improved by tuning of PU-PEA composition, silver thickness as well as thermal annealing temperature. Finally, the optimized SERS nanosensor enables label-free detection of sulfamethoxazole as low as 0.1 nM with a good reproducibility and detection performance in real water sample. Meanwhile, the optimized SERS nanosensor shows long term anti-biofouling capacity. Thanks to its facile fabrication, competitive analytical performance and resistance to biofouling, the current work basically open new way for design of flexible SERS nanosensors for biomedical applications.
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Affiliation(s)
- Zilin Fan
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Qimeng Ran
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Yuanyuan Li
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China.
| | - Xiaoling Xu
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Li Zheng
- Institute of Life Science, eBond Pharmaceutical Technology Ltd., Chengdu, China
| | - Xiaobo Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China; Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China
| | - Kun Jia
- School of Materials and Energy, University of Electronic Science and Technology of China, 610054, Chengdu, China; Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials, Chengdu, China.
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Le MT, Holden DT, Manheim JM, Dziekonski ET, Iyer K, Graham Cooks R. Two-Dimensional Tandem Mass Spectrometry for Biopolymer Structural Analysis. Angew Chem Int Ed Engl 2024; 63:e202315904. [PMID: 38117612 DOI: 10.1002/anie.202315904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/15/2023] [Accepted: 12/19/2023] [Indexed: 12/22/2023]
Abstract
Biopolymer analysis, including proteomics and glycomics, relies heavily on the use of mass spectrometry for structural elucidation, including sequence determination. Novel methods to improve sample workup, instrument performance, and data analysis continue to be developed to address shortcomings associated with sample preparation, analysis time, data quality, and data interpretation. Here, we present a new method that couples in-source collision-induced dissociation (IS-CID) with two-dimensional tandem mass spectrometry (2D MS/MS) as a way to simplify proteomics and glycomics workflows while also providing additional insight into analyte structures over traditional MS/MS experiments. Specifically, IS-CID is employed as a gas-phase digestion method, i.e., to break down intact full-length polysaccharide or peptide ions prior to mass analysis. The resulting mixtures of oligomeric ions are analyzed by 2D-MS/MS, a technique that allows association of product ions with their precursor ions without isolation of the latter. A novel data analysis strategy is introduced to leverage the second dimension of 2D MS/MS spectra, in which stairstep patterns, representing outputs of a molecule's MSn scans, are extracted for structural interconnectivity information on the oligomer. The results demonstrate the potential applicability of 2D MS/MS strategies to the modern omics workflow and structural analysis of various classes of biopolymers.
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Affiliation(s)
- MyPhuong T Le
- Purdue University, Department of Chemistry, West Lafayette, IN 47907, USA
| | - Dylan T Holden
- Purdue University, Department of Chemistry, West Lafayette, IN 47907, USA
| | - Jeremy M Manheim
- Merck & Co., Inc., Analytical Research and Development, Rahway, NJ 07065, USA
| | - Eric T Dziekonski
- Purdue University, Department of Chemistry, West Lafayette, IN 47907, USA
| | - Kiran Iyer
- Merck & Co., Inc., Analytical Research and Development, Rahway, NJ 07065, USA
| | - R Graham Cooks
- Purdue University, Department of Chemistry, West Lafayette, IN 47907, USA
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Wang Y, Zou M, Chen Y, Tang F, Dai J, Jin Y, Wang C, Xue F. Ultrasensitive and selective detection of sulfamethazine in milk via a Janus-labeled Au nanoparticle-based surface-enhanced Raman scattering-immunochromatographic assay. Talanta 2024; 267:125208. [PMID: 37717540 DOI: 10.1016/j.talanta.2023.125208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/07/2023] [Accepted: 09/12/2023] [Indexed: 09/19/2023]
Abstract
Sulfamethazine (SM2) is an antibacterial drug,which has been extensively used in human and veterinary medicine, long-term consumption of which may lead to the accumulation of sulfonamides in the body. Detection of sulfonamides often uses microbiological approaches, mass spectrometry and chromatography, which are expensive and time-consuming. Surface-enhanced Raman scattering-based immunochromatographic assay (SERS-ICA) has been recently applied in the detection. Herein, a Janus-labeled Au nanoparticle with subnanosized SiO2-monoclonal antibody and SERS reporter (DTNB) modified simultaneously (mAbAuNpDTNB) has been developed in a SERS-based lateral flow immunosensor, which can be used for rapid, quantitative and ultrasensitive detection of sulfamethazine residue in milk. The mAbAuNpDTNB exhibits a specific array on a paper stripe, which not only identifies sulfamethazine but also straightforwardly exposes the Raman reporter between the AuNps via self-assembly. The detection sensitivity of SERS-ICA for sulfamethazine reached 0.1 pg/mL, which was far below the previously published value by ELISA and the maximum residue limit set by the European Union. The entire SERS-ICA detection for sulfamethazine was completed within 15 min. Furthermore, high accuracy for this assay was exhibited in the spiking experiment with a recovery percentage of 88.1%-112.7%. The results demonstrated that this SERS-ICA can potentially be applied in point-of-care testing as an ultrasensitive and quantitative to semi-quantitative analytical method.
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Affiliation(s)
- Yufeng Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China; Chinese Academy of Inspection and Quarantine (CAIQ), No. A3, Gaobeidian Road, Chaoyang District, Beijing, 100123, China; Sanya Institute of Nanjing Agricultural University, Sanya, 572025, China
| | - Mingqiang Zou
- Chinese Academy of Inspection and Quarantine (CAIQ), No. A3, Gaobeidian Road, Chaoyang District, Beijing, 100123, China
| | - Yan Chen
- Chinese Academy of Inspection and Quarantine (CAIQ), No. A3, Gaobeidian Road, Chaoyang District, Beijing, 100123, China
| | - Fang Tang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jianjun Dai
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yong Jin
- Chinese Academy of Inspection and Quarantine (CAIQ), No. A3, Gaobeidian Road, Chaoyang District, Beijing, 100123, China.
| | - Cong Wang
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China.
| | - Feng Xue
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China; Sanya Institute of Nanjing Agricultural University, Sanya, 572025, China.
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Gonzalez LE, Snyder DT, Casey H, Hu Y, Wang DM, Guetzloff M, Huckaby N, Dziekonski ET, Wells JM, Cooks RG. Machine-Learning Classification of Bacteria Using Two-Dimensional Tandem Mass Spectrometry. Anal Chem 2023; 95:17082-17088. [PMID: 37937965 DOI: 10.1021/acs.analchem.3c04016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Biothreat detection has continued to gain attention. Samples suspected to fall into any of the CDC's biothreat categories require identification by processes that require specialized expertise and facilities. Recent developments in analytical instrumentation and machine learning algorithms offer rapid and accurate classification of Gram-positive and Gram-negative bacterial species. This is achieved by analyzing the negative ions generated from bacterial cell extracts with a modified linear quadrupole ion-trap mass spectrometer fitted with two-dimensional tandem mass spectrometry capabilities (2D MS/MS). The 2D MS/MS data domain of a bacterial cell extract is recorded within five s using a five-scan average after sample preparation by a simple extraction. Bacteria were classified at the species level by their lipid profiles using the random forest, k-nearest neighbor, and multilayer perceptron machine learning models. 2D MS/MS data can also be treated as image data for use with image recognition algorithms such as convolutional neural networks. The classification accuracy of all models tested was greater than 99%. Adding to previously published work on the 2D MS/MS analysis of bacterial growth and the profiling of sporulating bacteria, this study demonstrates the utility and information-rich nature of 2D MS/MS in the identification of bacterial pathogens at the species level when coupled with machine learning.
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Affiliation(s)
- L Edwin Gonzalez
- Department of Chemistry, Purdue University, West Lafayette , Indiana 47907, United States
| | - Dalton T Snyder
- Teledyne FLIR Detection, West Lafayette, Indiana 47907, United States
| | - Harman Casey
- Teledyne FLIR Detection, West Lafayette, Indiana 47907, United States
| | - Yanyang Hu
- Department of Chemistry, Purdue University, West Lafayette , Indiana 47907, United States
| | - Donna M Wang
- Department of Chemistry, Purdue University, West Lafayette , Indiana 47907, United States
| | - Megan Guetzloff
- Teledyne FLIR Detection, West Lafayette, Indiana 47907, United States
| | - Nicole Huckaby
- Teledyne FLIR Detection, West Lafayette, Indiana 47907, United States
| | - Eric T Dziekonski
- Department of Chemistry, Purdue University, West Lafayette , Indiana 47907, United States
| | - J Mitchell Wells
- Teledyne FLIR Detection, West Lafayette, Indiana 47907, United States
| | - R Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette , Indiana 47907, United States
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Pandey S, Hu Y, Anderson PL, Kiser JJ, Cooks RG. Miniature mass spectrometer-based point-of-care assay for measuring phosphatidylethanol in blood. Analyst 2023; 148:1430-1436. [PMID: 36892479 PMCID: PMC10061498 DOI: 10.1039/d3an00098b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
We demonstrate proof-of-concept for point-of-care assessment of long-term alcohol consumption by measuring phosphatidylethanol in blood/dried blood spots with nano-electrospray ionization and MS/MS using a miniature mass spectrometer. 'Abstinence', 'moderate', and 'chronic' consumption could be distinguished rapidly for both sample types, and quantitative performance was obtained with blood (LoQ-100 ng mL-1).
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Affiliation(s)
- Sangeeta Pandey
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA.
| | - Yanyang Hu
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA.
| | - Peter L Anderson
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO 80045, USA.
| | - Jennifer J Kiser
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Denver, Aurora, CO 80045, USA.
| | - R Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA.
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Gonzalez LE, Szalwinski LJ, Sams TC, Dziekonski ET, Cooks RG. Metabolomic and Lipidomic Profiling of Bacillus Using Two-Dimensional Tandem Mass Spectrometry. Anal Chem 2022; 94:16838-16846. [DOI: 10.1021/acs.analchem.2c03961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- L. Edwin Gonzalez
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Lucas J. Szalwinski
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Thomas C. Sams
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Eric T. Dziekonski
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - R. Graham Cooks
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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Miniature mass spectrometer-based point-of-care assay for cabotegravir and rilpivirine in whole blood. Anal Bioanal Chem 2022; 414:3387-3395. [PMID: 35169905 PMCID: PMC9018536 DOI: 10.1007/s00216-022-03954-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/07/2022] [Accepted: 02/01/2022] [Indexed: 11/01/2022]
Abstract
HIV prevention and treatment with injectable cabotegravir and/or rilpivirine administered once every 4 to 8 weeks is an attractive alternative to daily therapy. Prescribed dosage and drug concentrations in plasma are based on patient data collected in clinical trials, but actual patients are expected to exhibit more variability in drug concentrations, which is important to quantify. Here, we demonstrate the first quantitative point-of-care assay with a miniature mass spectrometer to assess these drug concentrations in whole blood. Quantitative performance is obtained using paper spray ionization in combination with tandem mass spectrometry (MS/MS) in the clinically relevant concentration range of both drugs. Limits of quantitation (LoQs) of cabotegravir and rilpivirine are measured to be 750 ng/mL and 20 ng/mL, respectively. The assay turnaround time is < 4 min, and strong linear relationships are established between MS/MS responses and concentration, with percentage of relative standard deviations (RSDs) that are <15% at concentrations above the LoQs. The speed, portability, low power consumption, and specificity offered by the miniature instrument should make it an appropriate platform for measuring drug concentrations in a walk-in clinic using small volumes of patient blood.
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