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Liang S, Zhao S, Liu H, Liu J, Xie X, Chen R, Chen B, Luan T. A quantitative method for aquaporin-1 protein using magnetic preconcentration and probe-based immunoassay coupling to inductively coupled plasma mass spectrometry in urine analysis. Anal Chim Acta 2024; 1324:343101. [PMID: 39218579 DOI: 10.1016/j.aca.2024.343101] [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: 03/16/2024] [Revised: 06/26/2024] [Accepted: 08/12/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Aquaporin-1 (AQP1) protein plays a crucial role in intracellular and extracellular water homeostasis and fluid transport in organs and tissues associated with diverse life activities and is extremely abundant in the kidney. Accurate detection of AQP1 in urine can be applied as screening of early-stage disease. Application of magnetic preconcentration and probe-based signal amplification strategy coupling to inductively coupled plasma mass spectrometry (ICP-MS) is a more accurate, sensitive and specific detection method for AQP1 in complex biological samples compared to conventional methods. RESULTS We described an element-labelling strategy based on magnetic preconcentration and probe-based immunoassay coupling to ICP-MS detection. The magnetic beads (MBs) modified with epoxy groups were capable of enriching AQP1 proteins and separating them from complex matrices. The probe constructed by conjugating anti-AQP1 antibody molecules on the surface of gold nanoparticles could specifically recognize AQP1 proteins attached on MBs and be analyzed by ICP-MS. The concentration of AQP1 protein could be precisely quantified and amplified by 14,000 times through the corresponding signal of Au atoms. This assay for AQP1 protein quantification achieved a detection limit down to 0.023 ng mL-1, a broad linear calibration curve between 0.3 ng mL-1 and 30 ng mL-1, as well as outstanding specificity. SIGNIFICANCE The proposed method was successfully applied to detect AQP1 protein in human urine samples, showing the potential for its applications concerning accurate AQP1 quantification. It can also screen a wide range of proteins provided the antibodies specific to these target proteins are available.
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Affiliation(s)
- Shuqi Liang
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, 510275, China; MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510006, China
| | - Shuang Zhao
- Sate Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hongtao Liu
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jiahui Liu
- Sate Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xiuqin Xie
- Southern Marine Science and Engineering Guangdong Laboratory, School of Marine Sciences, Sun Yat-Sen University, Zhuhai, 519082, China
| | - Ruohong Chen
- Sate Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang, 515200, China.
| | - Baowei Chen
- Southern Marine Science and Engineering Guangdong Laboratory, School of Marine Sciences, Sun Yat-Sen University, Zhuhai, 519082, China
| | - Tiangang Luan
- Sate Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang, 515200, China; School of Environmental and Chemical Engineering, Wuyi University, Jiangmen, 529020, China
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2
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Tang H, Sun G, Xu Y, Men S, Jiang W, Wang C. Simultaneous determination of inflammatory factors SAA and LTF based on stable element labeling and inductively coupled plasma mass spectrometry to aid in the diagnosis of infection. J Immunol Methods 2024; 528:113666. [PMID: 38574805 DOI: 10.1016/j.jim.2024.113666] [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: 09/30/2023] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 04/06/2024]
Abstract
OBJECTIVE The clinical value of Serum amyloid A (SAA) and Lactoferrin (LTF) has received significant attention, but their detection methods are inadequate, which limits their application. This study aims to develop a dual detection method based on stable element labeling strategies and inductively coupled plasma mass spectrometry (ICP-MS) for SAA/LTF and to assess whether it can be widely used in clinical practice. METHODS A duplex immunoassay system based on sandwich method was constructed. After optimization, methodological evaluation was performed with the guidelines of Clinical Laboratory Standards Institute (CLSI). Finally, 131 plasma samples were collected to analyze whether the new method is suitable for clinical detection. RESULTS The LoB, LLoQ, ULoQ, and linear range of the assay were 1.09 ng/mL, 3 ng/mL, 1500 ng/mL, 3-1500 ng/mL for SAA and 0.85 ng/mL, 2 ng/mL, 1200 ng/mL, 2-1200 ng/mL for LTF respectively. The recovery rates were 95.01% to 106.26%, the intra-batch precision of low, intermediate, and high-level samples was <8%, and the inter-batch of them was <11%, the deviation of interference test results was less than±10%. The Area Under the Curve (AUC) was 0.9809 for SAA, 0.8599 for LTF, and 0.9986 for combination. CONCLUSION The quantitative duplex immunoassay for SAA/LTF has high accuracy, good precision, and high specificity, which meets the clinical testing requirements and can be widely used in clinical practice.
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Affiliation(s)
- Hairong Tang
- Department of Laboratory Medicine, the first Medical Center, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
| | - Gongwei Sun
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Shuangqing Road 30, Haidian District, Beijing 100084, China
| | - Ying Xu
- Department of Laboratory Medicine, the first Medical Center, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
| | - Shasha Men
- Department of Laboratory Medicine, the first Medical Center, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
| | - Wencan Jiang
- Department of Clinical Diagnosis, Laboratory of Beijing Tiantan Hospital and Capital Medical University, South Fourth Ring West Road 119, Fengtai District, Beijing 100070, China.
| | - Chengbin Wang
- Department of Laboratory Medicine, the first Medical Center, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China.
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3
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Yin H, Chu Y, Wang W, Zhang Z, Meng Z, Min Q. Mass tag-encoded nanointerfaces for multiplexed mass spectrometric analysis and imaging of biomolecules. NANOSCALE 2023; 15:2529-2540. [PMID: 36688447 DOI: 10.1039/d2nr06020e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Revealing multiple biomolecules in the physiopathological environment simultaneously is crucial in biological and biomedical research. Mass spectrometry (MS) features unique technical advantages in multiplexed and label-free analyses. However, owing to comparably low abundance and poor ionization efficiency of target biomolecules, direct MS profiling of these biological species in vitro or in situ remains a challenge. An emerging route to solve this issue is to devise mass tag (MT)-encoded nanointerfaces which specifically convert the abundance or activity of biomolecules into amplified ion signals of mass tags, offering an ideal strategy for synchronous MS assaying and mapping of multiple targets in biofluids, cells and tissues. This review provides a thorough and organized overview of recent advances in MT-encoded nanointerfaces elaborately tailored for several practical applications in multiplexed MS bioanalysis and biomedical research. First, we start with elucidation of the structural characteristics and working principle of MT-encoded nanointerfaces in specific labeling and sensing of multiple biological targets. In addition, we further discuss the application scenarios of MT-encoded nanointerfaces particularly in multiplexed biomarker assays, cell analysis, and tissue imaging. Finally, the current challenges are pointed out and future prospects of these nanointerfaces in MS analysis are forecast.
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Affiliation(s)
- Hao Yin
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Yanxin Chu
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Wei Wang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Zhenzhen Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Zhen Meng
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
| | - Qianhao Min
- State Key Laboratory of Analytical Chemistry for Life Science, Chemistry and Biomedicine Innovation Center, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.
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4
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Jiang M, Zhou J, Xie X, Huang Z, Liu R, Lv Y. Single Nanoparticle Counting-Based Liquid Biopsy for Cancer Diagnosis. Anal Chem 2022; 94:15433-15439. [DOI: 10.1021/acs.analchem.2c03367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Min Jiang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, China
| | - Jing Zhou
- Analytical & Testing Center, Sichuan University, Chengdu610064, China
| | - Xiaobo Xie
- Analytical & Testing Center, Sichuan University, Chengdu610064, China
| | - Zili Huang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, China
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan610064, China
- Analytical & Testing Center, Sichuan University, Chengdu610064, China
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5
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Kang Q, Chen B, He M, Hu B. Simple Amplifier Coupled with a Lanthanide Labeling Strategy for Multiplexed and Specific Quantification of MicroRNAs. Anal Chem 2022; 94:12934-12941. [PMID: 36070565 DOI: 10.1021/acs.analchem.2c03234] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Inductively coupled plasma-mass spectrometry (ICP-MS) with elemental labeling is a promising strategy for multiplex microRNA (miRNA) analysis. However, it is still challenging for specific analysis of multiple miRNAs with high homology, and the development of multiplex assays is always limited by the complexity of the sequence design. Herein, a simple and direct ICP-MS-based assay was developed for the simultaneous detection of three miRNAs by combining the lanthanide labeling strategy with entropy-driven catalytic (EDC) amplification. Owing to the specificity of EDC for nucleic acid recognition, it is able to differentiate miRNAs with single-base mutation in each EDC circuit. A universal biotin-labeled DNA strand was designed to hybridize with the DNA substrates for three EDC circuits, targeting miRNA-21, miRNA-155, and miRNA-10b, respectively. All the substrates were loaded on the surface of streptavidin magnetic beads. In the presence of target miRNA, the EDC reaction was initiated, and EDC substrates were dissociated, continuously releasing reporter strands that were labeled with lanthanides (Tb/Ho/Lu). After magnetic separation, the supernatant containing the released reporter strands was introduced into an ICP-MS system for simultaneous detection of 159Tb/165Ho/175Lu and quantification of miRNA-21, miRNA-155, and miRNA-10b, respectively. The limits of detection were 7.4, 7.5, and 11 pmol L-1 for miRNA-21, miRNA-155, and miRNA-10b, respectively. Overall, this study provides a powerful strategy for simultaneous quantification of multiple miRNAs, with the advantages of flexible probe design, good sensitivity, and excellent specificity.
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Affiliation(s)
- Qi Kang
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Beibei Chen
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Man He
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Bin Hu
- Department of Chemistry, Wuhan University, Wuhan 430072, China
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6
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Xu S, Liu H, Bai Y. Highly sensitive and multiplexed mass spectrometric immunoassay techniques and clinical applications. Anal Bioanal Chem 2022; 414:5121-5138. [PMID: 35165779 DOI: 10.1007/s00216-022-03945-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/17/2022] [Accepted: 01/31/2022] [Indexed: 11/29/2022]
Abstract
Immunoassay is one of the most important clinical techniques for disease/pathological diagnosis. Mass spectrometry (MS) has been a popular and powerful readout technique for immunoassays, generating the mass spectrometric immunoassays (MSIAs) with unbeatable channels for multiplexed detection. The sensitivity of MSIAs has been greatly improved with the development of mass labels from element labels to small-molecular labels. MSIAs are also expended from the representative element MS-based methods to the laser-based organic MS and latest ambient MS, improving in both technology and methodology. Various MSIAs present high potential for clinical applications, including the biomarker screening, the immunohistochemistry, and the advanced single-cell analysis. Here, we give an overall review of the development of MSIAs in recent years, highlighting the latest improvement of mass labels and MS techniques for clinical immunoassays.
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Affiliation(s)
- Shuting Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Huwei Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Yu Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
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7
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Li K, Yang H, Yuan X, Zhang M. A novel and indirect method for L-cysteine detection in traditional Chinese medicines by chemical vapor generation-atomic fluorescence spectrometry. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Xu Y, Chen B, He M, Hu B. A homogeneous nucleic acid assay for simultaneous detection of SARS-CoV-2 and influenza A (H3N2) by single-particle inductively coupled plasma mass spectrometry. Anal Chim Acta 2021; 1186:339134. [PMID: 34756259 PMCID: PMC8486417 DOI: 10.1016/j.aca.2021.339134] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/14/2021] [Accepted: 08/28/2021] [Indexed: 12/15/2022]
Abstract
In recent years, single particle inductively coupled plasma mass spectrometry (SP-ICP-MS) has become a powerful tool for biological quantitative analysis. Homogeneous analysis method requires no separation and washing steps, which is suited for the analysis of highly infectious pathogens, so as to reduce the risk of infection during the operation. SARS-CoV-2 spreads all over the world, and its early infection symptoms are similar to influenza, which brings inconvenience to triage. Therefore, developing novel analytical method for simultaneous detection of multiple viral nucleic acids is essential. Taking the advantages of SP-ICP-MS and homogeneous analysis strategy, a SP-ICP-MS homogeneous nucleic acid assay by using gold nanoparticles (Au NPs) and silver nanoparticles (Ag NPs) probes was established for simultaneous sensitive analysis of SARS-CoV-2 and influenza A (H3N2). In the present of target SARS-CoV-2 or H3N2 nucleic acids, corresponding Au NPs or Ag NPs probes form larger aggregates, resulting in increased pulse signal intensity and reduced pulse signal frequency of the corresponding NPs in SP-ICP-MS measurement. In this assay, the reaction system of Au NPs and Ag NPs probes does not interfere with each other, and there was no separation and washing procedure, which facilitates operation, saves the analysis time, and improves the analysis efficiency. The linear range of this method is 5-1000 pmol L-1, with low-level limits of quantification of target nucleic acid. The developed SP-ICP-MS simultaneous homogeneous detection method has a good potential for detecting nucleic acid, protein, cell and other biological samples by changing different modification sequences on the NPs probes.
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9
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Chen X, Song H, Li Z, Liu R, Lv Y. Lanthanide Nanoprobes for the Multiplex Evaluation of Breast Cancer Biomarkers. Anal Chem 2021; 93:13719-13726. [PMID: 34595914 DOI: 10.1021/acs.analchem.1c03445] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Metal stable isotope tagging has demonstrated great and unique success in the multiplex and ratiometry-based accurate detection of biomolecules and single cells, while its sensitivity is regarded as an Achilles' heel. Although lanthanide nanoparticles remain the most promising tags for elemental mass spectrometry, there is no report on the lanthanide nanoparticle-based multiplex immunoassay of disease markers in clinical serum samples because of their tough synthesis and bioconjugation and a complex physiological sample matrix. Herein, to fill this gap, multiple lanthanide nanoparticle tags (NaEuF4, NaTbF4, and NaHoF4) were delicately designed and facilely synthesized with a one-pot solvothermal method for the multiplex evaluation of breast cancer biomarkers carcinoembryonic antigen (CEA), CA153, and CA125 in human serum samples. The proposed method exhibited wide linear ranges and low levels of the detection limit for all biomarkers. The test results were consistent with the routine electrochemiluminescence results in clinical serum samples, which proved the possibility of the early prognosis of breast cancer as well as improving the surgical outcome prediction.
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Affiliation(s)
- Xue Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Hongjie Song
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Ziyan Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China.,Analytical & Testing Center, Sichuan University, Chengdu 610064, China
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10
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Li Z, Chen X, Huang Z, Zhou J, Liu R, Lv Y. Multiplex Nucleic Acid Assay of SARS-CoV-2 via a Lanthanide Nanoparticle-Tagging Strategy. Anal Chem 2021; 93:12714-12722. [PMID: 34494424 PMCID: PMC8442555 DOI: 10.1021/acs.analchem.1c02657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Indexed: 01/28/2023]
Abstract
Early diagnosis, early isolation, and early treatment are efficient solutions to control the COVID-19 pandemic. To achieve the accurate early diagnosis of SARS-CoV-2, a multiplex detection strategy is required for the cross-validation to solve the problem of "false negative" of the existing gold standard assay. Here, we present a multicomponent nucleic acid assay platform for SARS-CoV-2 detection based on lanthanide nanoparticle (LnNP)-tagging strategy. For targeting SARS-CoV-2's RNA fragments ORF1ab gene, RdRp gene, and E gene, three LnNP probes can be used simultaneously to identify three sites in one sample through elemental mass spectrometry detection with limits of detection of 1.2, 1.3, and 1.3 fmol, respectively. With the multisite cross-validation, we envision that this multiplex and sensitive detection platform may provide an effective strategy for SARS-CoV-2 fast screening with a high accuracy.
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Affiliation(s)
- Ziyan Li
- Analytical
& Testing Center, Sichuan University, Chengdu 610064, Sichuan, China
| | - Xue Chen
- Key
Laboratory of Green Chemistry & Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China
| | - Zili Huang
- Key
Laboratory of Green Chemistry & Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China
| | - Jing Zhou
- Analytical
& Testing Center, Sichuan University, Chengdu 610064, Sichuan, China
| | - Rui Liu
- Key
Laboratory of Green Chemistry & Technology, Ministry of Education,
College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China
| | - Yi Lv
- Analytical
& Testing Center, Sichuan University, Chengdu 610064, Sichuan, China
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11
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Torregrosa D, Grindlay G, Gras L, Mora J. Immunoassays based on inductively coupled plasma mass spectrometry detection: So far so good, so what? Microchem J 2021. [DOI: 10.1016/j.microc.2021.106200] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Kang Q, He M, Chen B, Xiao G, Hu B. MNAzyme-Catalyzed Amplification Assay with Lanthanide Tags for the Simultaneous Detection of Multiple microRNAs by Inductively Coupled Plasma–Mass Spectrometry. Anal Chem 2020; 93:737-744. [DOI: 10.1021/acs.analchem.0c02455] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qi Kang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Man He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Beibei Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Guangyang Xiao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Bin Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China
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13
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Huang Z, Li Z, Jiang M, Liu R, Lv Y. Homogeneous Multiplex Immunoassay for One-Step Pancreatic Cancer Biomarker Evaluation. Anal Chem 2020; 92:16105-16112. [DOI: 10.1021/acs.analchem.0c03780] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zili Huang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Ziyan Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Min Jiang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yi Lv
- Analytical & Testing Center, Sichuan University, Chengdu 610064, China
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14
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Jiang W, Sun G, Cui W, Men S, Jing M, Pu D, Zhang S, Yuan X, Zhang X, Wang C. Evaluation of an Element-Tagged Duplex Immunoassay Coupled with Inductively Coupled Plasma Mass Spectrometry Detection: A Further Study for the Application of the New Assay in Clinical Laboratory. Molecules 2020; 25:molecules25225370. [PMID: 33212898 PMCID: PMC7698432 DOI: 10.3390/molecules25225370] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/07/2020] [Accepted: 11/12/2020] [Indexed: 12/28/2022] Open
Abstract
Background: Element-tagged immunoassay coupled with inductively coupled plasma mass spectrometry (ICP-MS) detection has the potential to revolutionize immunoassay analysis for multiplex detection. However, a further study referring to the standard evaluation and clinical sample verification is needed to ensure its reliability for simultaneous analysis in clinical laboratories. Methods: Carcinoembryonic antigen (CEA) and α-fetoprotein (AFP) were chosen for the duplex immunoassay. The performance of the assay was evaluated according to guidelines from the Clinical and Laboratory Standards Institute (CLSI). Moreover, reference intervals (RIs) of CEA and AFP were established. At last, 329 clinical samples were analyzed by the proposed method and results were compared with those obtained with electrochemiluminescent immunoassay (ECLIA) method. Results: The measurement range of the assay was 2–940 ng/mL for CEA and 1.5–1000 ng/mL for AFP, with a detection limit of 0.94 ng/mL and 0.34 ng/mL, respectively. The inter-assay and intra-assay imprecision were all less than 6.58% and 10.62%, respectively. The RI of CEA and AFP was 0–3.84 ng/mL and 0–9.94 ng/mL, respectively. Regarding to clinical sample detection, no significant difference was observed between the proposed duplex assay and the ECLIA method. Conclusions: The ICP-MS-based duplex immunoassay was successfully developed and the analytical performance fully proved clinical applicability. Well, this could be different with other analytes.
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Affiliation(s)
- Wencan Jiang
- Department of Clinical Laboratory Medicine, Chinese People’s Liberation Army General Hospital & Postgraduate Medical School, Beijing 100853, China; (W.J.); (S.M.); (D.P.); (X.Y.)
| | - Gongwei Sun
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China; (G.S.); (S.Z.)
| | - Wenbin Cui
- Chromatography & Mass Spectrometry Thermo Fisher Scientific, China Commercial, Beijing 100853, China; (W.C.); (M.J.)
| | - Shasha Men
- Department of Clinical Laboratory Medicine, Chinese People’s Liberation Army General Hospital & Postgraduate Medical School, Beijing 100853, China; (W.J.); (S.M.); (D.P.); (X.Y.)
| | - Miao Jing
- Chromatography & Mass Spectrometry Thermo Fisher Scientific, China Commercial, Beijing 100853, China; (W.C.); (M.J.)
| | - Danna Pu
- Department of Clinical Laboratory Medicine, Chinese People’s Liberation Army General Hospital & Postgraduate Medical School, Beijing 100853, China; (W.J.); (S.M.); (D.P.); (X.Y.)
| | - Sichun Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China; (G.S.); (S.Z.)
| | - Xiaozhou Yuan
- Department of Clinical Laboratory Medicine, Chinese People’s Liberation Army General Hospital & Postgraduate Medical School, Beijing 100853, China; (W.J.); (S.M.); (D.P.); (X.Y.)
| | - Xinrong Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University, Beijing 100084, China; (G.S.); (S.Z.)
- Department of Chemistry, Tsinghua University, Beijing 100084, China
- Correspondence: (X.Z.); (C.W.); Tel.: +86-010-6277-6888 (X.Z.); +86-159-0105-6535 (C.W.); Fax: +86-010-6278-2485 (X.Z.); +86-010-6693-7771 (C.W.)
| | - Chengbin Wang
- Department of Clinical Laboratory Medicine, Chinese People’s Liberation Army General Hospital & Postgraduate Medical School, Beijing 100853, China; (W.J.); (S.M.); (D.P.); (X.Y.)
- Fuxing Road 28, Haidian district, Beijing 100853, China
- Correspondence: (X.Z.); (C.W.); Tel.: +86-010-6277-6888 (X.Z.); +86-159-0105-6535 (C.W.); Fax: +86-010-6278-2485 (X.Z.); +86-010-6693-7771 (C.W.)
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15
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Jiang W, Sun G, Zhang Y, Hu Z, Wen X, Men S, Xing Z, Zhang S, Huang B, Wang C. Simultaneous determination of gastric cancer biomarkers pepsinogen PGI/PGII using element tagged immunoassay coupled with inductively coupled plasma mass spectrometry detection. J Clin Lab Anal 2020; 34:e23287. [PMID: 32147885 PMCID: PMC7370713 DOI: 10.1002/jcla.23287] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/14/2020] [Accepted: 02/18/2020] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES In this study, a new immunoassay for the simultaneous determination of pepsinogen I (PGI) and pepsinogen II (PGII) in serum based on element labeling strategy coupled with inductively coupled plasma mass spectrometry (ICP-MS) detection was proposed. METHODS The sandwich-type immunoassay was used to simultaneously detect PGI and PGII in serum. PGI and PGII were captured by anti-PGI and anti-PGII antibody immobilized on the magnetic beads and then banded with Eu3+ labeled anti-PGI detection antibody and Sm3+ labeled anti-PGII detection antibody, followed by ICP-MS detection. RESULTS The linear correlation coefficient (R2 ) of PGI and PGII standard curves was .9938 and .9911, with the dynamic range of 0-200 ng/mL and 0-60 ng/mL, respectively. The limit of detection for PGI and PGII was 1.8 ng/mL and 0.3 ng/mL, respectively. The average recovery was 101.41% ± 6.74% for PGI and 101.47% ± 4.20% for PGII. Good correlations were obtained between the proposed method and CLIA (r = .9588 for PGI, r = .9853 for PGII). CONCLUSIONS We established a mass spectrometry-based immunoassay for the simultaneous detection of PGI and PGII in a single analysis. The element tagged immunoassay coupled with ICP-MS detection has high sensitivity, accuracy, and specificity in clinical serum sample analysis.
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Affiliation(s)
- Wencan Jiang
- Department of Clinical Laboratory MedicineChinese People's Liberation Army General Hospital & Postgraduate Medical SchoolBeijingChina
| | - Gongwei Sun
- Beijing Key Laboratory for Microanalytical Methods and InstrumentationDepartment of ChemistryTsinghua UniversityBeijingChina
| | - Yuqing Zhang
- Beijing Key Laboratory for Microanalytical Methods and InstrumentationDepartment of ChemistryTsinghua UniversityBeijingChina
| | - Zhian Hu
- Beijing Key Laboratory for Microanalytical Methods and InstrumentationDepartment of ChemistryTsinghua UniversityBeijingChina
| | - Xinyu Wen
- Department of Clinical Laboratory MedicineChinese People's Liberation Army General Hospital & Postgraduate Medical SchoolBeijingChina
| | - Shasha Men
- Department of Clinical Laboratory MedicineChinese People's Liberation Army General Hospital & Postgraduate Medical SchoolBeijingChina
| | - Zhi Xing
- Beijing Key Laboratory for Microanalytical Methods and InstrumentationDepartment of ChemistryTsinghua UniversityBeijingChina
| | - Sichun Zhang
- Beijing Key Laboratory for Microanalytical Methods and InstrumentationDepartment of ChemistryTsinghua UniversityBeijingChina
| | - Biao Huang
- College of Life Science and MedicineZhejiang Sci‐Tech UniversityHangzhouChina
| | - Chengbin Wang
- Department of Clinical Laboratory MedicineChinese People's Liberation Army General Hospital & Postgraduate Medical SchoolBeijingChina
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16
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Hu J, Li Z, Zhang H, Liu R, Lv Y. Tag-Free Methodology for Ultrasensitive Biosensing of miRNA Based on Intrinsic Isotope Detection. Anal Chem 2020; 92:8523-8529. [PMID: 32340438 DOI: 10.1021/acs.analchem.0c01295] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
MicroRNA (miRNA), of which the abnormal intracellular expression highly associates with numerous pathological diseases, is considered as an important biomarker for early diagnosis and state monitoring of cancer. To avoid the tedious and vunerable labeling process, a series of novel label-free quantification methods for miRNA have been proposed. However, current label-free miRNA assays still require the presynthesis of a sensing unit as tags. Herein, we propose a "tag-free" methodology for miRNA quantification to realize the removal of sensing labels. Combining a concatenated-HCR (C-HCR) strategy and high-resolution inductive couple plasma mass spectrometry (HR-ICPMS) detection, we utilize phosphorus as a characteristic element to quantify the concentration of nucleotides. Benefiting from the excellent amplification performance of C-HCR and element analysis capacity of HR-ICPMS, a 13 fM limit of detection (LOD) was obtained. Ulteriorly, we verify the anti-interference performance of the proposed tag-free miRNA assay with a phosphate substrate-contained cell culture medium or nontarget miRNA. Furthermore, two cell lines of human cancer were chosen to evaluate the real biological sample analysis capacity. The good correlation data indicate promising prospects of the proposed tag-free methodology for the quantification of miRNA in tumor cells and further clinical applications.
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Affiliation(s)
- Jianyu Hu
- College of Architecture & Environment, Sichuan University, Chengdu 610064, China.,Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ziyan Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hu Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yi Lv
- Analytical & Testing Center, Sichuan University, Chengdu 610064, China
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17
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Li Z, Li H, Deng D, Liu R, Lv Y. Mass Spectrometric Assay of Alpha-Fetoprotein Isoforms for Accurate Serological Evaluation. Anal Chem 2020; 92:4807-4813. [DOI: 10.1021/acs.analchem.9b03995] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ziyan Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Hongmei Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Dongyan Deng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yi Lv
- Analytical & Testing Center, Sichuan University, Chengdu 610064, China
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18
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Huang Z, Wang C, Liu R, Su Y, Lv Y. Self-Validated Homogeneous Immunoassay by Single Nanoparticle in-Depth Scrutinization. Anal Chem 2020; 92:2876-2881. [PMID: 31910615 DOI: 10.1021/acs.analchem.9b05596] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The most convenient method for the clinical routine analysis of disease biomarkers is homogeneous immunoassay, which minimizes the requirements for automation and time-/lab-consumption. Despite great success, because sample constituents are not removed by a separation or washing step, a major challenge in conducting homogeneous immunoassays for the practical application is the matrix effect-related inaccuracy. Herein, to guarantee an accurate quantification, a self-validated homogeneous immunoassay was proposed, by simultaneously scrutinizing both frequency and intensity of single gold nanoparticles. The two analytical modes of single particle inductively coupled plasma mass spectrometry (ICPMS) correlated well with each other, resulting in a self-validation mechanism for the accurate immunoassay. Both two modes of the proposed method provided linear ranges of 2 orders of magnitude and LODs of pM level. Thanks to the self-validated strategy and the high tolerance of the matrix effect of ICPMS, the proposed homogeneous immunoassay was successfully demonstrated in a series of human serum samples, with results in good accordance with clinical routine methods.
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Affiliation(s)
- Zili Huang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu , Sichuan 610064 , China
| | - Chaoqun Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu , Sichuan 610064 , China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry , Sichuan University , Chengdu , Sichuan 610064 , China
| | - Yingying Su
- Analytical & Testing Center , Sichuan University , Chengdu 610064 , China
| | - Yi Lv
- Analytical & Testing Center , Sichuan University , Chengdu 610064 , China
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19
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Jiang W, Sun G, Wen X, Men S, Cui W, Jing M, Jia X, Hu Z, Pu D, Zhang S, Yuan X, Liu X, Zhang X, Wang C. Development and evaluation of an element-tagged immunoassay coupled with inductively coupled plasma mass spectrometry detection: can we apply the new assay in the clinical laboratory? Clin Chem Lab Med 2019; 58:873-882. [PMID: 31639100 DOI: 10.1515/cclm-2019-0566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 09/22/2019] [Indexed: 01/01/2023]
Abstract
Abstract
Introduction
Element-tagged immunoassay coupled with inductively coupled plasma-mass spectrometry (ICP-MS) detection has the potential to revolutionize immunoassay analysis in clinical detection; however, a systematic evaluation with the standard guidelines of the assay is needed to ensure its performance meets the requirements of the clinical laboratory.
Methods
Carcinoembryonic antigen (CEA) was chosen for analysis using the proposed method. A systematic evaluation of the proposed assay was carried out according to the Clinical and Laboratory Standards Institute (CLSI). The 469 clinical samples were analyzed using the new method and compared with the electrochemiluminescent immunoassay (ECLIA) method.
Results
The measurement range of the assay was 1–900 ng/mL, with a detection limit of 0.83 ng/mL. The inter-assay and intra-assay imprecision were 4.67% and 5.38% with high concentration samples, and 9.27% and 17.64% with low concentration samples, respectively. The cross-reactivity (%) for different antigens was less than 0.05%, and the recovery was between 94% and 108%. Percentage deviation of all the dilutions was less than 12.5% during linearity estimation. The interference bias caused by different substances was less than 10%. The reference interval of the assay was 0–4.442 ng/mL. Comparison with the commercial ECLIA method for clinical sample detection, the proposed method showed a correlation of 0.9878 and no significant differences between the methods were observed (p = 0.6666).
Conclusions
The ICP-MS based immunoassay was successfully developed, and the analytical performance of the assay met the requirements of the CLSI, which fully proved the clinical transferability and application of the new method.
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Affiliation(s)
- Wencan Jiang
- Department of Clinical Laboratory Medicine , Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Beijing , P.R. China
| | - Gongwei Sun
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry , Tsinghua University , Beijing , P.R. China
| | - Xinyu Wen
- Department of Clinical Laboratory Medicine , Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Beijing , P.R. China
| | - Shasha Men
- Department of Clinical Laboratory Medicine , Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Beijing , P.R. China
| | - Wenbin Cui
- Chromatography and Mass Spectrometry Thermo Fisher Scientific, China Commercial , Beijing , P.R. China
| | - Miao Jing
- Chromatography and Mass Spectrometry Thermo Fisher Scientific, China Commercial , Beijing , P.R. China
| | - Xingwang Jia
- Department of Clinical Laboratory Medicine , Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Beijing , P.R. China
| | - Zhian Hu
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry , Tsinghua University , Beijing , P.R. China
| | - Danna Pu
- Department of Clinical Laboratory Medicine , Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Beijing , P.R. China
| | - Sichun Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry , Tsinghua University , Beijing , P.R. China
| | - Xiaozhou Yuan
- Department of Clinical Laboratory Medicine , Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Beijing , P.R. China
| | - Xiaoting Liu
- Department of Clinical Laboratory Medicine , Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Beijing , P.R. China
| | - Xinrong Zhang
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Department of Chemistry, Tsinghua University , Beijing 100084 , P.R. China , Phone: 0086-10-62776888, Fax: 0086-10-62782485
| | - Chengbin Wang
- Department of Clinical Laboratory Medicine, Chinese People’s Liberation Army General Hospital and Postgraduate Medical School , Fuxing Road 28, Haidian District , Beijing 100853 , P.R. China , Phone: +15901056535, Fax: 010-66937771
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20
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Wang C, Zhao X, Liu R, Zhong Z, Hu J, Lv Y. Isotopic core-satellites enable accurate and sensitive bioassay of adenosine triphosphate. Chem Commun (Camb) 2019; 55:10665-10668. [PMID: 31411210 DOI: 10.1039/c9cc04988f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Adenosine triphosphate is a major vector of chemical energy in living organisms, but its detection is sometimes hindered by complicated physiological sample matrixes. In this work, we demonstrated a ratiometric bioassay for the accurate and sensitive detection of ATP by measuring the 197Au/115In signal ratio of a mass spectrometric core-satellite structure. Validation of the proposed bioassay was successfully demonstrated in cell lysates and human serum samples.
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Affiliation(s)
- Chaoqun Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Xin Zhao
- Department of Clinical Laboratory, Chengdu 7th People's Hospital, Chengdu, Sichuan 610041, P. R. China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Zijin Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Jianyu Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Yi Lv
- Analytical & Testing Center, Sichuan University, Chengdu 610064, P. R. China.
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21
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Wang C, Liu R, Hu J, Lv Y. Ratiometric DNA Walking Machine for Accurate and Amplified Bioassay. Chemistry 2019; 25:12270-12274. [DOI: 10.1002/chem.201903034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Chaoqun Wang
- Key Laboratory of Green Chemistry and Technology of Ministry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Rui Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Jianyu Hu
- Key Laboratory of Green Chemistry and Technology of Ministry of EducationCollege of ChemistrySichuan University Chengdu 610064 China
| | - Yi Lv
- Analytical & Testing CenterSichuan University Chengdu 610064 P.R. China
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22
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Liu R, Hu J, Chen Y, Jiang M, Lv Y. Label-Free Nuclease Assay with Long-Term Stability. Anal Chem 2019; 91:8691-8696. [DOI: 10.1021/acs.analchem.9b02467] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jianyu Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yongxin Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Min Jiang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
- Analytical & Testing Center, Sichuan University, Chengdu 610064, China
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23
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Hu Z, Sun G, Jiang W, Xu F, Zhang Y, Xia M, Pan X, Xing Z, Zhang S, Zhang X. Chemical-Modified Nucleotide-Based Elemental Tags for High-Sensitive Immunoassay. Anal Chem 2019; 91:5980-5986. [PMID: 30973226 DOI: 10.1021/acs.analchem.9b00405] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Multiplex biomolecular analysis with inductively coupled plasma mass spectrometry (ICP-MS) becomes increasingly important in clinical diagnosis and single cell analysis. However, the sensitivity of ICP-MS-based immunoassay is only comparable or lower than those of fluorescence methods at the present stage. Therefore, designing elemental tags with a large number of metal atoms is necessary to achieve high-sensitive detection. In this work, we proposed a new strategy to build up elemental tag loading with hundreds of rare earth ions by coupling alkyne-DNA chains with rare earth element (REE)-DOTA complexes a click chemistry reaction. There are about 2 orders of magnitude improvement in sensitivity compared with single metal-ion tags. DNA chains with multialkynyl groups were facilely prepared by PCR synthesis. Moreover, the DNA-based elemental tags own excellent water-solubility and biocompatibility. The tags would be potentially applied to mass cytometry and clinical diagnosis.
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Affiliation(s)
- Zhian Hu
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Gongwei Sun
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Wencan Jiang
- Department of Clinical Laboratory Medicine , Chinese People's Liberation Army General Hospital & Postgraduate Medical School , Beijing 100853 , China
| | - Fujian Xu
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Yuqing Zhang
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Mengchan Xia
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Xingyu Pan
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Zhi Xing
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Sichun Zhang
- Department of Chemistry Tsinghua University , Beijing 100084 , China
| | - Xinrong Zhang
- Department of Chemistry Tsinghua University , Beijing 100084 , China
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24
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Liu Y, Ding Y, Gao Y, Liu R, Hu X, Lv Y. Enzyme-free amplified DNA assay: five orders of linearity provided by metal stable isotope detection. Chem Commun (Camb) 2019; 54:13782-13785. [PMID: 30393790 DOI: 10.1039/c8cc07036a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the quantification of mutated genes at greatly varied concentrations in body fluids, nucleic acid amplification strategies are often challenged by limited dynamic linear ranges. The proposed metal stable isotope detection strategy demonstrates five orders of linear range and a lower attomol detection limit, showing promising potential in clinical diagnosis.
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Affiliation(s)
- Yu Liu
- College of Earth Sciences, Chengdu University of Technology, Chengdu, Sichuan 610059, P. R. China
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25
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Chen H, Chen C, Bai S, Gao Y, Metcalfe G, Cheng W, Zhu Y. Multiplexed detection of cancer biomarkers using a microfluidic platform integrating single bead trapping and acoustic mixing techniques. NANOSCALE 2018; 10:20196-20206. [PMID: 30256377 DOI: 10.1039/c8nr06367b] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
It is critical to reliably and rapidly detect multiple disease biomarkers in tiny liquid samples with high sensitivity to meet the growing demand for point-of-care diagnostics. This paper reports a microfluidic platform integrating magnetic-based single bead trapping in conjunction with acoustic micromixing for simultaneous detection of multiple cancer biomarkers within minutes. Individual beads retained by permalloy (NiFe81/19) microarray were used to capture biomarkers and facilitate the fluorescence identification. A numerical study indicates that the magnetic force keeping a bead in the trap is proportional to the thickness of the permalloy array and the external magnetic field strength, while inversely proportional to the size of the trap. The acoustic microstreaming activated by a piezo transducer was applied to generate fast-switching flow patterns to minimize the diffusion length scales. The flow at various driving frequencies was experimentally tested to achieve the optimal mixing effect. The flow field of the microstreaming was subsequently described by a mathematical model to understand the flow further. Finally, the prostate-specific antigen (PSA) and carcinoembryonic antigen (CEA) were employed as model analytes to demonstrate the capability of the platform for rapid biomarker detection. With the aid of acoustic micromixing, the detection can be finished in 20 minutes. The respective limit of detection of PSA and CEA is 0.028 ng mL-1 (0.8 pM) and 3.1 ng mL-1 (17 pM), which is respectively 1/142 and 1/3 of the cutoff value of PSA and CEA. Our results indicate this platform has great potential for the rapid detection of multiple biomarkers in future point-of-care diagnostics.
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Affiliation(s)
- Huaying Chen
- School of Mechanical Engineering and Automation, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
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26
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Ratiometric quantification of β2-microglobulin antigen in human serum based on elemental labeling strategy. Talanta 2018; 189:249-253. [PMID: 30086914 DOI: 10.1016/j.talanta.2018.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/22/2018] [Accepted: 07/01/2018] [Indexed: 11/23/2022]
Abstract
Ratiometric quantification for competitive immunoassay based on internal standard element detection utilizing inductively coupled plasma mass spectrometry (ICP-MS) as multiplex readout has been demonstrated. The Beta-2-microglobulin (β2-MG) associated with clinical diseases was detected by Y-labeled capture antibody used as internal standard probes and Sm-labeled antigen used as report probes via antigen-antibody reaction. The ratiometric quantification was achieved by taking the signal ratio of Sm/Y. The ratiometric method could compensate for the particle loss and suppress the signal fluctuation, which improved the precision of the quantitative result. Under the optimized conditions, the calibration curves for β2-MG antigen was linear in the range of 0.25-8.0 μg/mL with a detection limit of 0.17 μg/mL (3σ, n = 11). The recoveries of 96.5%-132% were obtained for serum samples spiked with different concentration standards, and the relative standard deviation (RSD) was less than 10%. The β2-MG results in serum samples obtained by the proposed method correlated well with those obtained by time-resolved fluorescence immunoassay (r = 0.947). This proposed method provides a simpler labeling strategy for ratiometric quantification of immunoassay.
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