1
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Li X, Li X, Chen J, Tan Z, Wang C. ICP-MS based detection method combined with Au NP and Ag NP labeling for bacteremia diagnosis. Anal Biochem 2024; 692:115559. [PMID: 38723993 DOI: 10.1016/j.ab.2024.115559] [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: 02/03/2024] [Revised: 04/14/2024] [Accepted: 05/07/2024] [Indexed: 06/16/2024]
Abstract
Bacteremia, as a serious infectious disease, has an increasing incidence and a high mortality rate. Early diagnosis and early treatment are crucial for improving the cure rate. In this work, we proposed an inductively coupled plasma mass spectrometry (ICP-MS)-based detection method combined with gold nanoparticle (Au NP) and silver nanoparticle (Ag NP) labeling for the simultaneous detection of Salmonella and Escherichia coli (E. coli O157:H7) in human blood samples. Salmonella and E. coli O157:H7 were captured by magnetic beads coupled with anti-8G3 and anti-7C2, and then specifically labeled by Au NP-anti-5H12 and Ag NP-anti-8B1 respectively, which were used as signal probes for ICP-MS detection. Under the optimal experimental conditions, the limits of detection of 164 CFU mL-1 for Salmonella, 220 CFU mL-1for E. coli O157:H7 and the linear ranges of 400-80,000 CFU mL-1Salmonella, 400-60,000 CFU mL-1 E. coli O157:H7 were obtained. The proposed method can realize the simultaneous detection of two types of pathogenic bacteria in human whole blood in 3.5 h, showing great potential for the rapid diagnosis of bacteremia in clinic.
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Affiliation(s)
- Xiaoting Li
- Department of Food and Drug, ShenZhen Polytechnic University, Liuxian Avenue, Nanshan District, Shenzhen, Guangdong, 518055, China.
| | - Xin Li
- Department of Food and Drug, ShenZhen Polytechnic University, Liuxian Avenue, Nanshan District, Shenzhen, Guangdong, 518055, China
| | - Jiayi Chen
- Department of Food and Drug, ShenZhen Polytechnic University, Liuxian Avenue, Nanshan District, Shenzhen, Guangdong, 518055, China
| | - Zuomin Tan
- Department of Food and Drug, ShenZhen Polytechnic University, Liuxian Avenue, Nanshan District, Shenzhen, Guangdong, 518055, China
| | - Chuan Wang
- Department of Science and Education Division, Public Health Clinical Center of Chengdu, 377 Jingming Road, Jinjiang District, Chengdu, Sichuan, 610061, China.
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2
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Hu J, Yan X, Chris Le X. Label-free detection of biomolecules using inductively coupled plasma mass spectrometry (ICP-MS). Anal Bioanal Chem 2024; 416:2625-2640. [PMID: 38175283 DOI: 10.1007/s00216-023-05106-7] [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: 11/06/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024]
Abstract
Bioassays using inductively coupled plasma mass spectrometry (ICP-MS) have gained increasing attention because of the high sensitivity of ICP-MS and the various strategies of labeling biomolecules with detectable metal tags. The classic strategy to tag the target biomolecules is through direct antibody-antigen interaction and DNA hybridization, and requires the separation of the bound from the unbound tags. Label-free ICP-MS techniques for biomolecular assays do not require direct labeling: they generate detectable metal ions indirectly from specific biomolecular reactions, such as enzymatic cleavage. Here, we highlight the development of three main strategies of label-free ICP-MS assays for biomolecules: (1) enzymatic cleavage of metal-labeled substrates, (2) release of immobilized metal ions from the DNA backbone, and (3) nucleic acid amplification-assisted aggregation and release of metal tags to achieve amplified detection. We briefly describe the fundamental basis of these label-free ICP-MS assays and discuss the benefits and drawbacks of various designs. Future research is needed to reduce non-specific adsorption and minimize background and interference. Analytical innovations are also required to confront challenges faced by in vivo applications.
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Affiliation(s)
- Jianyu Hu
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Xiaowen Yan
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361005, China.
| | - X Chris Le
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada.
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3
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Gonzalez de Vega R, Clases D, Cunningham BA, Ganio K, Neville SL, McDevitt CA, Doble PA. Spatial distribution of trace metals and associated transport proteins during bacterial infection. Anal Bioanal Chem 2024; 416:2783-2796. [PMID: 38057634 DOI: 10.1007/s00216-023-05068-w] [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: 09/28/2023] [Revised: 11/08/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023]
Abstract
Innate immune systems alter the concentrations of trace elements in host niches in response to invading pathogens during infection. This work reports the interplay between d-block metal ions and their associated biomolecules using hyphenated elemental techniques to spatially quantify both elemental distributions and the abundance of specific transport proteins. Here, lung tissues were collected for analyses from naïve and Streptococcus pneumoniae-infected mice fed on a zinc-restricted or zinc-supplemented diet. Spatiotemporal distributions of manganese (55Mn), iron (56Fe), copper (63Cu), and zinc (66Zn) were determined by quantitative laser ablation-inductively coupled plasma-mass spectrometry. The murine transport proteins ZIP8 and ZIP14, which are associated with zinc transport, were also imaged by incorporation of immunohistochemistry techniques into the analytical workflow. Collectively, this work demonstrates the potential of a single instrumental platform suitable for multiplex analyses of tissues and labelled antibodies to investigate complex elemental interactions at the host-pathogen interface. Further, these methods have the potential for broad application to investigations of biological pathways where concomitant measurement of elements and biomolecules is crucial to understand the basis of disease and aid in development of new therapeutic approaches.
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Affiliation(s)
- Raquel Gonzalez de Vega
- The Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales, Australia
- TESLA-Analytical Chemistry, Institute of Chemistry, University of Graz, Graz, Austria
| | - David Clases
- The Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales, Australia
- Nano Micro LAB, Institute of Chemistry, University of Graz, Graz, Austria
| | - Bliss A Cunningham
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Katherine Ganio
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Stephanie L Neville
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Christopher A McDevitt
- Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Philip A Doble
- The Atomic Medicine Initiative, University of Technology Sydney, Broadway, New South Wales, Australia.
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4
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Wei D, Sun J, Luo Z, Zhang G, Liu Y, Zhang H, Xie Z, Gu Z, Tao WA. Targeted Phosphoproteomics of Human Saliva Extracellular Vesicles via Multiple Reaction Monitoring Cubed (MRM 3). Anal Chem 2024; 96:1223-1231. [PMID: 38205554 DOI: 10.1021/acs.analchem.3c04464] [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: 01/12/2024]
Abstract
Oral squamous cell carcinoma (OSCC) has become a global health problem due to its increasing incidence and high mortality rate. Early intervention through monitoring of the diagnostic biomarker levels during OSCC treatment is critical. Extracellular vesicles (EVs) are emerging surrogates in intercellular communication through transporting biomolecule cargo and have recently been identified as a potential source of biomarkers such as phosphoproteins for many diseases. Here, we developed a multiple reaction monitoring cubed (MRM3) method coupled with a novel sample preparation strategy, extracellular vesicles to phosphoproteins (EVTOP), to quantify phosphoproteins using a minimal amount of saliva (50 μL) samples from OSCC patients with high specificity and sensitivity. Our results established differential patterns in the phosphopeptide content of healthy, presurgery, and postsurgery OSCC patient groups. Notably, we discovered significantly increased salivary phosphorylated alpha-amylase (AMY) in the postsurgery group compared to the presurgery group. We hereby present the first targeted MS method with extremely high sensitivity for measuring endogenous phosphoproteins in human saliva EVs.
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Affiliation(s)
- Dong Wei
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Jie Sun
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Zhuojun Luo
- Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Guiyuan Zhang
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Yufeng Liu
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Hao Zhang
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Zhuoying Xie
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing 210096, China
| | - W Andy Tao
- Department of Chemistry and Department of Biochemistry, Purdue University, West Lafayette, Indiana 47907, United States
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5
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Zeng Q, Xia MC, Yin X, Cheng S, Xue Z, Tan S, Gong X, Ye Z. Recent developments in ionization techniques for single-cell mass spectrometry. Front Chem 2023; 11:1293533. [PMID: 38130875 PMCID: PMC10733462 DOI: 10.3389/fchem.2023.1293533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
The variation among individual cells plays a significant role in many biological functions. Single-cell analysis is advantageous for gaining insight into intricate biochemical mechanisms rarely accessible when studying tissues as a whole. However, measurement on a unicellular scale is still challenging due to unicellular complex composition, minute substance quantities, and considerable differences in compound concentrations. Mass spectrometry has recently gained extensive attention in unicellular analytical fields due to its exceptional sensitivity, throughput, and compound identification abilities. At present, single-cell mass spectrometry primarily concentrates on the enhancement of ionization methods. The principal ionization approaches encompass nanoelectrospray ionization (nano-ESI), laser desorption ionization (LDI), secondary ion mass spectrometry (SIMS), and inductively coupled plasma (ICP). This article summarizes the most recent advancements in ionization techniques and explores their potential directions within the field of single-cell mass spectrometry.
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Affiliation(s)
- Qingli Zeng
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, China
| | - Meng-Chan Xia
- National Anti-Drug Laboratory Beijing Regional Center, Beijing, China
| | - Xinchi Yin
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, China
| | - Simin Cheng
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, China
| | - Zhichao Xue
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, China
| | - Siyuan Tan
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, China
| | - Xiaoyun Gong
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, China
| | - Zihong Ye
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, China
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6
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Xu Y, Chen B, He M, Cui Z, Hu B. All-in-One Microfluidic Chip for Online Labeling, Separating, and Focusing Rare Circulating Tumor Cells from Blood Samples Followed by Inductively Coupled Plasma Mass Spectrometry Detection. Anal Chem 2023; 95:14061-14067. [PMID: 37677145 DOI: 10.1021/acs.analchem.3c02680] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Circulating tumor cell (CTC) detection is essential for early cancer diagnosis and evaluating treatment efficacy. Despite the growing interest in isolating CTCs and further quantifying surface biomarkers at the single-cell level, highly efficient separation of rare CTCs from massive blood cells is still a big challenge. Here, we developed an all-in-one microfluidic chip system for the immunolabeling, magnetic separation, and focusing of HepG2 cells (as a CTC model) and online combined it with single cell-inductively coupled plasma mass spectrometry (SC-ICP-MS) for quantitative analysis of the asialoglycoprotein receptor (ASGPR) on single HepG2 cells. Lanthanide-labeled anti-ASGPR monoclonal antibody and antiepithelial cell adhesion molecule-modified magnetic beads were prepared as signal and magnetic probes, respectively. Target cells were highly efficiently labeled with signal and magnetic probes in the mixing zone of the microfluidic chip and then focused and sorted in the separation zone by specific magnetic separation techniques to avoid matrix contamination. The average cell recovery of HepG2 cells was derived to be 94.1 ± 5.7% with high separation efficiency and purity. The sorted cells with signal probes were detected for enumeration and quantification of ASGPR on their surface by SC-ICP-MS. The developed method showed good specificity and high sensitivity, detecting an average of (1.0 ± 0.2) × 105 ASGPR molecules per cell surface. This method can be used for absolute quantitative analysis of ASGPR on the surface of single hepatocellular carcinoma cells in real-world samples, providing a highly efficient analytical platform for studying targeted drug delivery in cancer therapy.
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Affiliation(s)
- Yan Xu
- 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
| | - Zewei Cui
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Bin Hu
- Department of Chemistry, Wuhan University, Wuhan 430072, China
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7
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Fan Z, Xie J, Kushwaha R, Liang S, Li W, Mandal AA, Wei L, Banerjee S, Huang H. Anticancer Screening of Ru(II) Photoredox Catalysts at Single Cancer Cell Level. Chem Asian J 2023; 18:e202300047. [PMID: 36894498 DOI: 10.1002/asia.202300047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 03/11/2023]
Abstract
The rapid efflux of Pt-based chemotherapeutics by cancer cells is one of the major causes of drug resistance in clinically available drugs. Therefore, both the high cellular uptake as well as adequate retention efficiency of an anticancer agent are important factors to overcome drug resistance. Unfortunately, rapid and efficient quantification of metallic drug concentration in individual cancer cells still remains a tricky problem. Herein, with the help of newly developed single cell inductively coupled plasma mass spectrometry (SC-ICP-MS), we have found that the well-known Ru(II)-based complex, Ru3, displayed remarkable intracellular uptake and retention efficiency in every single cancer cell with high photocatalytic therapeutic activity to overcome cisplatin resistance. Moreover, Ru3 has shown sensational photocatalytic anticancer properties with excellent in-vitro and in-vivo biocompatibility under light exposure.
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Affiliation(s)
- Zhongxian Fan
- Pharmacy Department, Shenshan Medical Center, Memorial Hospital of Sun Yat-sen University, Shanwei, 516600, P. R. China
- School of Pharmaceutical Science (Shenzen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
| | - Jiaen Xie
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Rajesh Kushwaha
- Chemistry, Indian Institute of Chemistry (BHU), Varanasi IIT (BHU), Varanasi, UP, 221005, India
| | | | - Wenqing Li
- School of Pharmaceutical Science (Shenzen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
| | - Arif Ali Mandal
- Chemistry, Indian Institute of Chemistry (BHU), Varanasi IIT (BHU), Varanasi, UP, 221005, India
| | - Li Wei
- School of Pharmaceutical Science (Shenzen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
| | - Samya Banerjee
- Chemistry, Indian Institute of Chemistry (BHU), Varanasi IIT (BHU), Varanasi, UP, 221005, India
| | - Huaiyi Huang
- School of Pharmaceutical Science (Shenzen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, P. R. China
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8
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Li Y, Huang Z, Li Z, Li C, Liu R, Lv Y. Mass Spectrometric Multiplex Detection of MicroRNA and Protein Biomarkers for Liver Cancer. Anal Chem 2022; 94:17248-17254. [PMID: 36448711 DOI: 10.1021/acs.analchem.2c04171] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The occurrence of cancers is often accompanied by the abnormal expression of several sorts of biomarkers (e.g., nucleic acids and proteins). The multiplex assessment of them would substantially aid in the early detection and precise diagnosis, which is often hampered by their different detection schemes, different reaction matrix and reagents, and spectral overlapping. Herein, we propose a simple and sensitive mass spectrometric method for the multiplex detection of nucleic acid and protein, in which liver cancer-related biomarkers miRNA 223 and alpha-fetoprotein (AFP) were selected as model analytes. The self-amplification effect of metal atom-based nanoparticle probes can provide high sensitivity in complex serum samples without any additional amplification procedure. The detection limits for the simultaneous detection of miRNA 223 and AFP were 103 (2.1 pM) and 219 amol (0.15 ng/mL), respectively, with high specificity and selectivity. The proposed method is potentially useful for the rapid screening of cancers.
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Affiliation(s)
- Yan Li
- 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
| | - Ziyan Li
- Analytical & Testing Center, Sichuan University, Chengdu 610064 Sichuan, China
| | - Caixia Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, 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
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064 Sichuan, China.,Analytical & Testing Center, Sichuan University, Chengdu 610064 Sichuan, China
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9
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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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10
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Soldado A, Barrio LC, Díaz-Gonzalez M, de la Escosura-Muñiz A, Costa-Fernandez JM. Advances in quantum dots as diagnostic tools. Adv Clin Chem 2022; 107:1-40. [PMID: 35337601 DOI: 10.1016/bs.acc.2021.07.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Quantum dots (QDs) are crystalline inorganic semiconductor nanoparticles a few nanometers in size that possess unique optical electronic properties vs those of larger materials. For example, QDs usually exhibit a strong and long-lived photoluminescence emission, a feature dependent on size, shape and composition. These special optoelectronic properties make them a promising alternative to conventional luminescent dyes as optical labels in biomedical applications including biomarker quantification, biomolecule targeting and molecular imaging. A key parameter for use of QDs is to functionalize their surface with suitable (bio)molecules to provide stability in aqueous solutions and efficient and selective tagging biomolecules of interest. Researchers have successfully developed biocompatible QDs and have linked them to various biomolecule recognition elements, i.e., antibodies, proteins, DNA, etc. In this chapter, QD synthesis and characterization strategies are reviewed as well as the development of nanoplatforms for luminescent biosensing and imaging-guided targeting. Relevant biomedical applications are highlighted with a particular focus on recent progress in ultrasensitive detection of clinical biomarkers. Finally, key future research goals to functionalize QDs as diagnostic tools are explored.
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Affiliation(s)
- Ana Soldado
- Department of Physical and Analytical Chemistry, University of Oviedo, Oviedo, Spain
| | - Laura Cid Barrio
- Department of Physical and Analytical Chemistry, University of Oviedo, Oviedo, Spain
| | - María Díaz-Gonzalez
- Department of Physical and Analytical Chemistry, University of Oviedo, Oviedo, Spain
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11
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Wang C, Song H, Zhao X, Liu R, Lv Y. Multiplex DNA Walking Machines for Lung Cancer-Associated miRNAs. Anal Chem 2022; 94:1787-1794. [PMID: 35018772 DOI: 10.1021/acs.analchem.1c04557] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Biomimetic DNA walking machines have gained great success in scrutinizing the microscopic world and sensitive biosensing of disease biomarkers. Despite superb achievements, the research on DNA walking machines for simultaneous detection of multiple analytes is still rare, while the design and realization of multiplexing are considered as an important bottleneck. The multiplex detection of biomarkers can not only improve the specificity of bioassays but also avoid the squander of valuable biological specimens. Herein, we reported multiplex three-dimensional (3D) DNA walking machines based on high-resolution inductively coupled plasma mass spectrometry (HR-ICPMS) for lung cancer-associated miRNA detection. In the presence of lung cancer-associated target miRNAs (miR-21, miR-141, and miR-125b), DNA walking machines were stimulated and operated to liberate a large number of lanthanide elements (Tb, Ho, and Tm), and then the signals were collected simultaneously by HR-ICPMS. The recovery test of target miRNAs in human serum and the simultaneous monitoring experiment of three miRNAs in human lung cancer cell line (A549) and normal cell line (HBE) specimens display satisfactory analysis capabilities for complex biological samples. Thanks to the vast potential of lanthanide tags and the modular design, the proposed bioassay might flexibly detect different miRNA combinations with corresponding sets of DNA walking machines to meet the requirements of various tasks.
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Affiliation(s)
- Chaoqun Wang
- Analytical & Testing Center, Sichuan University, Chengdu 610064, P. R. China
| | - Hongjie Song
- Key Laboratory of Green Chemistry and Technology of 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 610041, Sichuan, P. R. China
| | - Rui Liu
- Key Laboratory of Green Chemistry and Technology of 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.,Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
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12
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Zhou J, Li Z, Hu J, Wang C, Liu R, Lv Y. HOGG1-assisted DNA methylation analysis via a sensitive lanthanide labelling strategy. Talanta 2021; 239:123136. [PMID: 34920255 DOI: 10.1016/j.talanta.2021.123136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 01/09/2023]
Abstract
The assessment of DNA methylation level is an important indicator for the diagnosis and treatment of some diseases. DNA methylation assays are usually based on nucleic acid amplification strategies, which are time-consuming and complicated in operation procedures. Herein, we proposed a sensitive lanthanide-labelled ICP-MS method for DNA methylation analysis that exploited the feature of Human 8-oxoGuanine DNA Glycosylase (hOGG1), which specifically recognizes 8-oxo-G/5mC base pairs to effectively distinguish methylated DNA. A low limit of detection of 84 pM was achieved, and a 0.1% methylation level can be discriminated in the mixture, without any amplification procedure. Compared with commonly used nucleic acid amplification strategies, this proposed method is time-saving and low probability of false positive. Moreover, this work has been successfully validated in human serum samples, the recovery rates is between 96.7% and 105%, and the relative standard deviation (RSD) is in the range of 3.0%-3.5%, indicating that this method has the potential to be applied in clinical and biological samples quantitative analysis.
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Affiliation(s)
- Jing Zhou
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, PR China
| | - Ziyan Li
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, PR China
| | - Jianyu Hu
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, PR China
| | - Chaoqun Wang
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, PR China
| | - Rui Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 WangJiang Road, Chengdu, 610064, PR China
| | - Yi Lv
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, PR China; Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 WangJiang Road, Chengdu, 610064, PR China.
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13
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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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14
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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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15
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Li BR, Tang H, Yu RQ, Jiang JH. Single-Nanoparticle ICP-MS for Sensitive Detection of Uracil-DNA Glycosylase Activity. Anal Chem 2021; 93:8381-8385. [PMID: 34100608 DOI: 10.1021/acs.analchem.1c01447] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Single-nanoparticle inductively coupled plasma mass spectrometry (SP-ICP-MS) has demonstrated unique advantages for the detection of biological samples. However, methods for enzyme activity detection based on SP-ICP-MS technology have been rarely explored. Here we report the development of a novel SP-ICP-MS assay for uracil-DNA glycosylase (UDG) activity detection based on its ability to specifically recognize and remove uracil to induce the cleavage of the DNA probe. Our design allows the generation of single gold nanoparticles correlated to the specific enzymatic reaction for a highly sensitive SP-ICP-MS measurement. The developed assay enables sensitive UDG activity detection with a detection limit of 0.0003 U/mL. The cell lysate analysis by the developed assay reveals its applicability for the detection of UDG activity in real samples. It is envisioned that our design may provide a new paradigm for developing the SP-ICP-MS assay for enzyme activity detection in biological samples.
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Affiliation(s)
- Bang-Rui Li
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Hao Tang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Ru-Qin Yu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Jian-Hui Jiang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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16
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Nguyen DP, Nguyen HTH, Do LH. Tools and Methods for Investigating Synthetic Metal-Catalyzed Reactions in Living Cells. ACS Catal 2021; 11:5148-5165. [PMID: 34824879 PMCID: PMC8612649 DOI: 10.1021/acscatal.1c00438] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Although abiotic catalysts are capable of promoting numerous new-to-nature reactions, only a small subset has so far been successfully integrated into living systems. Research in intracellular catalysis requires an interdisciplinary approach that takes advantage of both chemical and biological tools as well as state-of-the-art instrumentations. In this perspective, we will focus on the techniques that have made studying metal-catalyzed reactions in cells possible using representative examples from the literature. Although the lack of quantitative data in vitro and in vivo has somewhat limited progress in the catalyst development process, recent advances in characterization methods should help overcome some of these deficiencies. Given its tremendous potential, we believe that intracellular catalysis will play a more prominent role in the development of future biotechnologies and therapeutics.
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Affiliation(s)
- Dat P. Nguyen
- Department of Chemistry, University of Houston, 4800 Calhoun Rd, Houston, Texas 77004, United States
| | - Huong T. H. Nguyen
- Department of Chemistry, University of Houston, 4800 Calhoun Rd, Houston, Texas 77004, United States
| | - Loi H. Do
- Department of Chemistry, University of Houston, 4800 Calhoun Rd, Houston, Texas 77004, United States
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17
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Mu J, Yu LL, Wellems TE. Sensitive Immunoassay Detection of Plasmodium Lactate Dehydrogenase by Inductively Coupled Plasma Mass Spectrometry. Front Cell Infect Microbiol 2021; 10:620419. [PMID: 33505925 PMCID: PMC7831609 DOI: 10.3389/fcimb.2020.620419] [Citation(s) in RCA: 3] [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] [Accepted: 11/24/2020] [Indexed: 12/28/2022] Open
Abstract
Rapid, reliable, and sensitive detection of Plasmodium infection is central to malaria control and elimination. Many Malaria Rapid Diagnostic Tests (RDTs) developed for this purpose depend upon immunoassays that can be improved by advances in bound antibody sensor technology. In a previous study, immuno-polymerase chain reaction (PCR) was shown to provide highly sensitive detection of Plasmodium falciparum lactate dehydrogenase (PfLDH) in monoclonal antibody (mAb) sandwich assays. Here, we show comparably high immunoassay sensitivity by inductively coupled plasma mass spectrometry (ICP-MS) detection of gold nanoparticles (AuNPs). Following capture of PfLDH with the primary mAb and binding of the AuNP-labeled detection mAb, ICP-MS signals from the AuNPs provided quantitative measures of recombinant PfLDH test dilutions and P. falciparum-infected erythrocytes. A detection limit of 1.5 pg/mL was achieved with the PfLDH protein. Parasitemia in cultures of P. falciparum-infected erythrocytes could be detected to a lower limit of 1.6 parasite/μl (p/μl) for early ring-stage forms and 0.3 p/μl for mixed stages including mature trophozoites and schizont-stages. These results show that ICP-MS detection of AuNPs can support highly sensitive and accurate detection of Plasmodium infection.
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Affiliation(s)
- Jianbing Mu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Lee L. Yu
- Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, United States
| | - Thomas E. Wellems
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
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18
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Khalid K, Tan X, Mohd Zaid HF, Tao Y, Lye Chew C, Chu DT, Lam MK, Ho YC, Lim JW, Chin Wei L. Advanced in developmental organic and inorganic nanomaterial: a review. Bioengineered 2020; 11:328-355. [PMID: 32138595 PMCID: PMC7161543 DOI: 10.1080/21655979.2020.1736240] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 02/08/2023] Open
Abstract
With the unique properties such as high surface area to volume ratio, stability, inertness, ease of functionalization, as well as novel optical, electrical, and magnetic behaviors, nanomaterials have a wide range of applications in various fields with the common types including nanotubes, dendrimers, quantum dots, and fullerenes. With the aim of providing useful insights to help future development of efficient and commercially viable technology for large-scale production, this review focused on the science and applications of inorganic and organic nanomaterials, emphasizing on their synthesis, processing, characterization, and applications on different fields. The applications of nanomaterials on imaging, cell and gene delivery, biosensor, cancer treatment, therapy, and others were discussed in depth. Last but not least, the future prospects and challenges in nanoscience and nanotechnology were also explored.
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Affiliation(s)
- Khalisanni Khalid
- Malaysian Agricultural Research and Development Institute (MARDI), Serdang, Malaysia
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Xuefei Tan
- College of Materials and Chemical Engineering, Heilongjiang Institute of Technology, Harbin, PR China
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, PR China
- Dalian SEM Bio-Engineering Technology Co., Ltd, Dalian, PR China
| | - Hayyiratul Fatimah Mohd Zaid
- Fundamental and Applied Sciences Department, Centre of Innovative Nanostructures & Nanodevices (COINN), Institute of Autonomous System, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Malaysia
| | - Yang Tao
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Chien Lye Chew
- Sime Darby Plantation Research (Formerly Known as Sime Darby Research), R&D Centre – Carey Island, Pulau Carey, Malaysia
| | - Dinh-Toi Chu
- Faculty of Biology, Hanoi National University of Education, Hanoi, Vietnam
- Centre for Molecular Medicine Norway (NCMM), Nordic EMBL Partnership, University of Oslo and Oslo University Hospital, Norway
| | - Man Kee Lam
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia
| | - Yeek-Chia Ho
- Civil and Environmental Engineering Department, Univesiti Teknologi PETRONAS, Seri Iskandar, Malaysia
- Center for Urban Resource Sustainably, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia
| | - Jun Wei Lim
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia
- Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia Lim
| | - Lai Chin Wei
- Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya (UM), Kuala Lumpur, Malaysia
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19
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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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20
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Stevens KG, Pukala TL. Conjugating immunoassays to mass spectrometry: Solutions to contemporary challenges in clinical diagnostics. Trends Analyt Chem 2020; 132:116064. [PMID: 33046944 PMCID: PMC7539833 DOI: 10.1016/j.trac.2020.116064] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Developments in immunoassays and mass spectrometry have independently influenced diagnostic technology. However, both techniques possess unique strengths and limitations, which define their ability to meet evolving requirements for faster, more affordable and more accurate clinical tests. In response, hybrid techniques, which combine the accessibility and ease-of-use of immunoassays with the sensitivity, high throughput and multiplexing capabilities of mass spectrometry are continually being explored. Developments in antibody conjugation methodology have expanded the role of these biomolecules to applications outside of conventional colorimetric assays and histology. Furthermore, the range of different mass spectrometry ionisation and analysis technologies has enabled its successful adaptation as a detection method for numerous clinically relevant immunological assays. Several recent examples of combined mass spectrometry-immunoassay techniques demonstrate the potential of these methods as improved diagnostic tests for several important human diseases. The present challenges are to continue technological advancements in mass spectrometry instrumentation and develop improved bioconjugation methods, which can overcome their existing limitations and demonstrate the clinical significance of these hybrid approaches.
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21
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Cid-Barrio L, Ruiz Encinar J, Costa-Fernández JM. Catalytic Gold Deposition for Ultrasensitive Optical Immunosensing of Prostate Specific Antigen. SENSORS 2020; 20:s20185287. [PMID: 32947809 PMCID: PMC7571086 DOI: 10.3390/s20185287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 11/30/2022]
Abstract
A major challenge in the development of bioanalytical methods is to achieve a rapid and robust quantification of disease biomarkers present at very low concentration levels in complex biological samples. An immunoassay platform is presented herein for ultrasensitive and fast detection of the prostate-specific antigen (PSA), a well-recognized cancer biomarker. A sandwich type immunosensor has been developed employing a detection antibody labeled with inorganic nanoparticles acting as tags for further indirect quantification of the analyte. The required high sensitivity is then achieved through a controlled gold deposition on the nanoparticle surface, carried out after completing the recognition step of the immunoassay, thus effectively amplifying the size of the nanoparticles from nm to µm range. Due to such an amplification procedure, quantification of the biomolecule could be carried out directly on the immunoassay plates using confocal microscopy for measurement of the reflected light produced by gold-enlarged nanostructures. The high specificity of the immunoassay was demonstrated with the addition of a major abundant protein in serum (albumin) at much higher concentrations. An extremely low detection limit for PSA quantification (LOD of 1.1 fg·mL−1 PSA) has been achieved. Such excellent LOD is 2–3 orders of magnitude lower than the clinically relevant PSA levels present in biological samples (4–10 ng·mL−1) and even to monitor eventual recurrence after clinical treatment of a prostate tumor (0.1 ng·mL−1). In fact, the broad dynamic range obtained (4 orders of magnitude) would allow the PSA quantification of diverse samples at very different relevant levels.
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22
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Nanoparticles as labels of specific-recognition reactions for the determination of biomolecules by inductively coupled plasma-mass spectrometry. Anal Chim Acta 2020; 1128:251-268. [DOI: 10.1016/j.aca.2020.07.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 02/08/2023]
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23
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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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24
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Wang LC, Hong CY, Lin ZZ, Chen XM, Huang ZY. Aptamer-based fluorometric determination of chloramphenicol by controlling the activity of hemin as a peroxidase mimetic. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:2391-2397. [PMID: 32930265 DOI: 10.1039/d0ay00389a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A method for the aptamer-based determination of chloramphenicol (CAP) was developed by exploiting the peroxidase mimicking activity of hemin. The method includes two hemin-modified DNA probes termed P1 and P2. P1, which was modified at its 5' end with one hemin monomer, contains the CAP-binding sequence. The hybridization between P1 and P2 brings the two hemin monomers in close proximity, resulting in the formation of a hemin dimer with low peroxidase mimicking activity. The duplex structure was dehybridized in the presence of CAP. The formed hemin monomer featured a strong peroxidase mimicking activity and catalyzed the conversion of non-fluorescent tyramine into fluorescent dityramine by hydrogen peroxide. Fluorescence (with an excitation/emission maxima at 320 and 410 nm, respectively) increased linearly in the 0.1 ng mL-1 to 10 ng mL-1 CAP concentration range. The detection limit based on the 3σ/k criterion reached 0.07 ng mL-1. The proposed assay was successfully employed for CAP detection in (spiked) honey samples with recoveries of 94.3-117.2%. Given its high sensitivity and good stability, this method shows potential in providing a platform for antibiotic detection.
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Affiliation(s)
- Ling-Chen Wang
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
| | - Cheng-Yi Hong
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
| | - Zheng-Zhong Lin
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen, Fujian Province 361021, China
| | - Xiao-Mei Chen
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
| | - Zhi-Yong Huang
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Xiamen, Fujian Province 361021, China
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25
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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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26
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Reduced Iron in Diabetic Wounds: An Oxidative Stress-Dependent Role for STEAP3 in Extracellular Matrix Deposition and Remodeling. J Invest Dermatol 2019; 139:2368-2377.e7. [DOI: 10.1016/j.jid.2019.05.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 05/16/2019] [Accepted: 05/23/2019] [Indexed: 12/18/2022]
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27
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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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28
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Compact Quantum Dots for Quantitative Cytology. Methods Mol Biol 2019. [PMID: 31565773 DOI: 10.1007/978-1-4939-9831-9_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
In this chapter, we describe the preparation of fluorescent quantum dots for imaging and measuring protein expression in cells. Quantum dots are nanocrystals that have numerous advantages for biomolecular detection compared with organic dyes and fluorescent proteins, but their large size has been a limiting factor. We describe the synthesis of nanoparticles smaller than 10 nm (smaller than an antibody), their attachment to monoclonal antibodies through click chemistry, characterization of the conjugates, and use for labeling of cellular antigens. We further discuss the unique advantages and challenges associated with this approach compared with conventional immunofluorescence techniques.
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29
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Xiao G, Chen B, He M, Li X, Hu B. A highly sensitive assay of DNA based on inductively coupled plasma mass spectrometry detection with gold nanoparticle amplification and isothermal circular strand-displacement polymerization reaction. Talanta 2019; 202:207-213. [DOI: 10.1016/j.talanta.2019.05.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/29/2019] [Accepted: 05/02/2019] [Indexed: 01/14/2023]
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30
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Liu R, Li Z, Huang Z, Li K, Lv Y. Biosensors for explosives: State of art and future trends. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.05.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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31
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Qian J, Wu D, Cai P, Xia J. Nitrogen atom free polythiophene derivative as an efficient chemosensor for highly selective and sensitive Cu 2+ and Ag + detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 218:76-84. [PMID: 30954800 DOI: 10.1016/j.saa.2019.03.093] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 03/26/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
A new nitrogen atom free polythiophene derivative bearing methoxy-ethoxy units of poly{3-[2-(2-methoxy-ethoxy)-ethoxy]-thiophene} (PM) was successfully synthesized by introducing multiple ether bonds on the thiophene unit. The special (ether bonds) coordination structure was constructed and these fluorescence characteristics of PM to metal ions detection were investigated. This polythiophene-based material displays a specific fluorescence quenching effect on Cu2+ and Ag+, and correspondingly emerges some color changes that are visible to the naked eyes. In addition, it even performs a low detection limit to Cu2+ for only 0.45 μM, which exhibits a higher selective detection to Cu2+ than other reported N-containing chemosenors. These discoveries are helpful to indicate an original aspect for development on nitrogen atom free polythiophene-based fluorescent-sensing materials.
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Affiliation(s)
- Junning Qian
- College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China
| | - Di Wu
- College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China
| | - Ping Cai
- College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China.
| | - Jiangbin Xia
- College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China; Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China.
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32
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Liang Y, Liu Q, Zhou Y, Chen S, Yang L, Zhu M, Wang Q. Counting and Recognizing Single Bacterial Cells by a Lanthanide-Encoding Inductively Coupled Plasma Mass Spectrometric Approach. Anal Chem 2019; 91:8341-8349. [DOI: 10.1021/acs.analchem.9b01130] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yong Liang
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Qian Liu
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Yang Zhou
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Shi Chen
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Limin Yang
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
| | - Min Zhu
- PerkinElmer Instruments (Shanghai) Co. Ltd., Shanghai 201203, China
| | - Qiuquan Wang
- Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China
- State Key Lab of Marine Environmental Science, Xiamen University, Xiamen, Fujian 361005, China
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33
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Ren C, Bobst CE, Kaltashov IA. Exploiting His-Tags for Absolute Quantitation of Exogenous Recombinant Proteins in Biological Matrices: Ruthenium as a Protein Tracer. Anal Chem 2019; 91:7189-7198. [PMID: 31083917 DOI: 10.1021/acs.analchem.9b00504] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Metal labeling and ICP MS detection offer an alternative to commonly accepted techniques that are currently used to quantitate exogenous proteins in vivo, but modifying the protein surface with metal-containing groups inevitably changes its biophysical properties and is likely to affect trafficking and biodistribution. The approach explored in this work takes advantage of the presence of hexa-histidine tags in many recombinant proteins, which have high affinity toward a range of metals. While many divalent metals bind to poly histidine sequences reversibly, oxidation of imidazole-bound CoII or RuII is known to result in a dramatic increase of the binding strength. In order to evaluate the feasibility of using imidazole-bound metal oxidation as a means of attaching permanent tags to polyhistidine segments, a synthetic peptide YPDFEDYWMKHHHHHH was used as a model. RuII can be oxidized under ambient (aerobic) conditions, allowing any oxidation damage to the peptide beyond the metal-binding site to be avoided. The resulting peptide-RuIII complex is very stable, with the single hexa-histidine segment capable of accommodating up to three metal ions. Localization of RuIII within the hexa-histidine segment of the peptide was confirmed by tandem mass spectrometry. The RuIII/peptide binding appears to be irreversible, with both low- and high-molecular weight biologically relevant scavengers failing to strip the metal from the peptide. Application of this protocol to labeling a recombinant form of an 80 kDa protein transferrin allowed RuIII to be selectively placed within the His-tag segment. The metal label remained stable in the presence of ubiquitous scavengers and did not interfere with the receptor binding, while allowing the protein to be readily detected in serum at sub-nM concentrations. The results of this work suggest that ruthenium lends itself as an ideal metal tag for selective labeling of His-tag containing recombinant proteins to enable their sensitive detection and quantitation with ICP MS.
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Affiliation(s)
- Chengfeng Ren
- Department of Chemistry , University of Massachusetts-Amherst , Amherst , Massachusetts 01003 , United States
| | - Cedric E Bobst
- Department of Chemistry , University of Massachusetts-Amherst , Amherst , Massachusetts 01003 , United States
| | - Igor A Kaltashov
- Department of Chemistry , University of Massachusetts-Amherst , Amherst , Massachusetts 01003 , United States
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34
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Grasso G. Mass spectrometry is a multifaceted weapon to be used in the battle against Alzheimer's disease: Amyloid beta peptides and beyond. MASS SPECTROMETRY REVIEWS 2019; 38:34-48. [PMID: 29905953 DOI: 10.1002/mas.21566] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
Amyloid-β peptide (Aβ) accumulation and aggregation have been considered for many years the main cause of Alzheimer's disease (AD), and therefore have been the principal target of investigation as well as of the proposed therapeutic approaches (Grasso [2011] Mass Spectrom Rev. 30: 347-365). However, the amyloid cascade hypothesis, which considers Aβ accumulation the only causative agent of the disease, has proven to be incomplete if not wrong. In recent years, actors such as metal ions, oxidative stress, and other cofactors have been proposed as possible co-agents or, in some cases, main causative factors of AD. In this scenario, MS investigation has proven to be fundamental to design possible diagnostic strategies of this elusive disease, as well as to understand the biomolecular mechanisms involved, in the attempt to find a possible therapeutic solution. We review the current applications of MS in the search for possible Aβ biomarkers of AD to help the diagnosis of the disease. Recent examples of the important contributions that MS has given to prove or build theories on the molecular pathways involved with such terrible disease are also reviewed.
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Affiliation(s)
- Giuseppe Grasso
- Department of Chemical Sciences, University of Catania, Catania, Italy
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35
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Pérez E, Marco FM, Martínez-Peinado P, Mora J, Grindlay G. Evaluation of different competitive immunoassays for aflatoxin M 1 determination in milk samples by means of inductively coupled plasma mass spectrometry. Anal Chim Acta 2018; 1049:10-19. [PMID: 30612640 DOI: 10.1016/j.aca.2018.11.024] [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: 04/10/2018] [Revised: 11/09/2018] [Accepted: 11/12/2018] [Indexed: 11/29/2022]
Abstract
Haptens (i.e. biomolecules which molecular weight is lower than 10 kDa) determination by inductively coupled plasma mass spectrometry (ICP-MS) is usually performed by means of competitive immunoassays. In these immunoassays, analyte quantification is indirectly carried out using two different tracer species (i.e. antibodies or antigen-protein conjugates). However, the benefits (and drawbacks) derived from using a given tracer species have not been systematically investigated so far. The goal of this work is to evaluate the influence of the tracer species employed in competitive immunoassays on the analytical figures of merit for aflatoxin M1 (AFM1) determination in milk samples. To this end, three different strategies have been developed and evaluated, namely: (i) antibody binding inhibition assay (ABIA); (ii) capture inhibition assay (CIA); and (iii) capture bridge inhibition assay (CBIA). Experimental results show that the use of the antibody as tracer species (as in the ABIA approach) affords better analytical figures of merit for AFM1 determination than using the antigen-protein conjugate as the tracer one (as in the CIA and CBIA strategies). The limit of detection afforded by ABIA strategy (i.e. 0.1 ng kg-1) for AFM1 determination was 1000-fold and 50-fold lower regarding the CIA and CBIA strategies, respectively. In the case of the ABIA approach, the characteristics of the metal nanoparticle label employed to detect the tracer species is critical on the analytical figures of merit. However, when the hapten-protein conjugates are used as tracer species, immunocomplex formation is severely hampered by steric effects caused by the protein moiety and, consequently, the characteristics of the metal nanoparticle label is not critical in the immunoassay performance. The different immunoassay strategies were successfully validated for AFM1 determination in milk samples using a certified reference material of whole milk powder (ERM-BD283) according to European Conformity guidelines for analytical methods of food contaminants and mycotoxins. Compared to ELISA, the immunoassay developed for AFM1 determination in milk samples improve limits of detection up to 10-fold.
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Affiliation(s)
- Emma Pérez
- Department of Analytical Chemistry, Nutrition and Food Sciences, University of Alicante, PO Box 99, 03080, Alicante, Spain
| | - Francisco M Marco
- Department of Biotechnology, University of Alicante, PO Box 99, 03080, Alicante, Spain
| | | | - Juan Mora
- Department of Analytical Chemistry, Nutrition and Food Sciences, University of Alicante, PO Box 99, 03080, Alicante, Spain
| | - Guillermo Grindlay
- Department of Analytical Chemistry, Nutrition and Food Sciences, University of Alicante, PO Box 99, 03080, Alicante, Spain.
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36
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Calderón-Celis F, Encinar JR, Sanz-Medel A. Standardization approaches in absolute quantitative proteomics with mass spectrometry. MASS SPECTROMETRY REVIEWS 2018; 37:715-737. [PMID: 28758227 DOI: 10.1002/mas.21542] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 06/20/2017] [Indexed: 05/10/2023]
Abstract
Mass spectrometry-based approaches have enabled important breakthroughs in quantitative proteomics in the last decades. This development is reflected in the better quantitative assessment of protein levels as well as to understand post-translational modifications and protein complexes and networks. Nowadays, the focus of quantitative proteomics shifted from the relative determination of proteins (ie, differential expression between two or more cellular states) to absolute quantity determination, required for a more-thorough characterization of biological models and comprehension of the proteome dynamism, as well as for the search and validation of novel protein biomarkers. However, the physico-chemical environment of the analyte species affects strongly the ionization efficiency in most mass spectrometry (MS) types, which thereby require the use of specially designed standardization approaches to provide absolute quantifications. Most common of such approaches nowadays include (i) the use of stable isotope-labeled peptide standards, isotopologues to the target proteotypic peptides expected after tryptic digestion of the target protein; (ii) use of stable isotope-labeled protein standards to compensate for sample preparation, sample loss, and proteolysis steps; (iii) isobaric reagents, which after fragmentation in the MS/MS analysis provide a final detectable mass shift, can be used to tag both analyte and standard samples; (iv) label-free approaches in which the absolute quantitative data are not obtained through the use of any kind of labeling, but from computational normalization of the raw data and adequate standards; (v) elemental mass spectrometry-based workflows able to provide directly absolute quantification of peptides/proteins that contain an ICP-detectable element. A critical insight from the Analytical Chemistry perspective of the different standardization approaches and their combinations used so far for absolute quantitative MS-based (molecular and elemental) proteomics is provided in this review.
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Affiliation(s)
| | - Jorge Ruiz Encinar
- Department of Physical and Analytical Chemistry, University of Oviedo, Oviedo, Spain
| | - Alfredo Sanz-Medel
- Department of Physical and Analytical Chemistry, University of Oviedo, Oviedo, Spain
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37
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Based on ZnSe quantum dots labeling and single particle mode ICP-MS coupled with sandwich magnetic immunoassay for the detection of carcinoembryonic antigen in human serum. Anal Chim Acta 2018; 1028:22-31. [DOI: 10.1016/j.aca.2018.04.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/05/2018] [Accepted: 04/10/2018] [Indexed: 11/19/2022]
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38
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Zhang Y, Sun G, Zhang Y, Huang B, Xing Z, Zhang S, Zhang X. Simultaneous competitive and sandwich formats multiplexed immunoassays based on ICP-MS detection. Talanta 2018; 185:237-242. [DOI: 10.1016/j.talanta.2018.03.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/07/2018] [Accepted: 03/11/2018] [Indexed: 11/28/2022]
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39
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Liu R, Wang C, Hu J, Su Y, Lv Y. DNA-templated copper nanoparticles: Versatile platform for label-free bioassays. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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40
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Pérez E, Bierla K, Grindlay G, Szpunar J, Mora J, Lobinski R. Lanthanide polymer labels for multiplexed determination of biomarkers in human serum samples by means of size exclusion chromatography-inductively coupled plasma mass spectrometry. Anal Chim Acta 2018; 1018:7-15. [DOI: 10.1016/j.aca.2018.02.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/19/2018] [Accepted: 02/20/2018] [Indexed: 11/27/2022]
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41
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Zhu L, Chen D, Lu X, Qi Y, He P, Liu C, Li Z. An ultrasensitive flow cytometric immunoassay based on bead surface-initiated template-free DNA extension. Chem Sci 2018; 9:6605-6613. [PMID: 30310592 PMCID: PMC6115634 DOI: 10.1039/c8sc02752h] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 07/20/2018] [Indexed: 12/14/2022] Open
Abstract
An ultrasensitive flow cytometric immunoassay (TdT-FCI) is developed based on bead surface-initiated template-free DNA extension.
Proteins lack the duplication mechanism like nucleic acids, so the connection of immunoassays with effective nucleic acid amplification techniques has become a powerful way for the detection of trace protein biomarkers in biological fluids. However, such immunoassays generally suffer from rather stringent DNA sequence design and complicated operations. Herein, we propose a simple but highly sensitive flow cytometric immunoassay (FCI) by employing on-bead terminal deoxynucleotidyl transferase (TdT)-initiated template-free DNA extension as an effective signal amplification pathway (TdT-FCI), and gold nanoparticles (AuNPs) co-functionalized with both the detection antibody and a 3′-OH oligonucleotide (ODN) as the transducer to bridge the immunoassay and subsequent TdT-mediated DNA amplification. The target antigen can sandwich with the capture antibody immobilized on the magnetic beads (MBs) and the detection antibody on the AuNPs to bring a lot of ODNs onto the surface of MBs. Each ODN on the MBs can be effectively elongated by TdT in a template-free manner to produce a long poly(T) tail, which will then bind to many 6-carboxyfluorescein (FAM)-labeled poly(A)25. Since each AuNP can carry multiple ODNs and each extended ODN can ultimately capture numerous FAM-poly(A)25, efficiently amplified fluorophore accumulation on the MBs can be achieved. The fluorescent MBs can be individually interrogated with a flow cytometer and thus quantitative analysis of the target antigen can be realized. Coupled with the powerful flow cytometry analysis, the simple but efficient TdT-based signal amplification mechanism has pushed the detection limit of prostate specific antigen (PSA) down to a low level of 0.5 pg mL–1. Furthermore, based on an elegant bead size-encoding principle, we have further advanced the TdT-FCI for multiplexed antigen detection in a single reaction. Sharing the unique merits of simple design and operation, efficient signal amplification, powerful signal readout and the capability for multiplexed analysis, this TdT-FCI provides a versatile tool for detecting trace antigen biomarkers towards clinical diagnosis as well as prognosis.
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Affiliation(s)
- Liping Zhu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , Shaanxi Province , P. R. China .
| | - Desheng Chen
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , Shaanxi Province , P. R. China .
| | - Xiaohui Lu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , Shaanxi Province , P. R. China .
| | - Yan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , Shaanxi Province , P. R. China .
| | - Pan He
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , Shaanxi Province , P. R. China .
| | - Chenghui Liu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , Shaanxi Province , P. R. China .
| | - Zhengping Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province , Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , Shaanxi Province , P. R. China .
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42
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Cid-Barrio L, Calderón-Celis F, Abásolo-Linares P, Fernández-Sánchez ML, Costa-Fernández JM, Encinar JR, Sanz-Medel A. Advances in absolute protein quantification and quantitative protein mapping using ICP-MS. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.09.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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43
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Whiteaker JR, Zhao L, Saul R, Kaczmarczyk JA, Schoenherr RM, Moore HD, Jones-Weinert C, Ivey RG, Lin C, Hiltke T, Reding KW, Whiteley G, Wang P, Paulovich AG. A Multiplexed Mass Spectrometry-Based Assay for Robust Quantification of Phosphosignaling in Response to DNA Damage. Radiat Res 2018; 189:505-518. [PMID: 29474155 PMCID: PMC5939939 DOI: 10.1667/rr14963.1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A lack of analytically robust and multiplexed assays has hampered studies of the large, branched phosphosignaling network responsive to DNA damage. To address this need, we developed and fully analytically characterized a 62-plex assay quantifying protein expression and post-translational modification (phosphorylation and ubiquitination) after induction of DNA damage. The linear range was over 3 orders of magnitude, the median inter-assay variability was 10% CV and the vast majority (∼85%) of assays were stable after extended storage. The multiplexed assay was applied in proof-of-principle studies to quantify signaling after exposure to genotoxic stress (ionizing radiation and 4-nitroquinoline 1-oxide) in immortalized cell lines and primary human cells. The effects of genomic variants and pharmacologic kinase inhibition (ATM/ATR) were profiled using the assay. This study demonstrates the utility of a quantitative multiplexed assay for studying cellular signaling dynamics, and the potential application to studies on inter-individual variation in the radiation response.
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Affiliation(s)
- Jeffrey R. Whiteaker
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
| | - Lei Zhao
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
| | - Rick Saul
- Antibody Characterization Laboratory, Leidos Biochemical Research, Inc., Frederick National Laboratory for Cancer Research ATRF, Frederick, Maryland
| | - Jan A. Kaczmarczyk
- Antibody Characterization Laboratory, Leidos Biochemical Research, Inc., Frederick National Laboratory for Cancer Research ATRF, Frederick, Maryland
| | - Regine M. Schoenherr
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
| | - Heather D. Moore
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
| | - Corey Jones-Weinert
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
| | - Richard G. Ivey
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
| | - Chenwei Lin
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
| | - Tara Hiltke
- Office of Cancer Clinical Proteomics Research, National Cancer Institute, Bethesda, Maryland
| | - Kerryn W. Reding
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
- School of Public Health, University of Washington, Seattle, Washington
| | - Gordon Whiteley
- Antibody Characterization Laboratory, Leidos Biochemical Research, Inc., Frederick National Laboratory for Cancer Research ATRF, Frederick, Maryland
| | - Pei Wang
- Department of Genetics and Genomic Sciences, Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Amanda G. Paulovich
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washingon
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44
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Fabrication and application of noble metal nanoclusters as optical sensors for toxic metal ions. Anal Bioanal Chem 2018; 410:2485-2498. [DOI: 10.1007/s00216-017-0808-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 12/03/2017] [Accepted: 12/06/2017] [Indexed: 12/24/2022]
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45
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Yang B, Chen B, He M, Yin X, Xu C, Hu B. Aptamer-Based Dual-Functional Probe for Rapid and Specific Counting and Imaging of MCF-7 Cells. Anal Chem 2018; 90:2355-2361. [PMID: 29308635 DOI: 10.1021/acs.analchem.7b04927] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Development of multimodal detection technologies for accurate diagnosis of cancer at early stages is in great demand. In this work, we report a novel approach using an aptamer-based dual-functional probe for rapid, sensitive, and specific counting and visualization of MCF-7 cells by inductively coupled plasma-mass spectrometry (ICP-MS) and fluorescence imaging. The probe consists of a recognition unit of aptamer to catch cancer cells specifically, a fluorescent dye (FAM) moiety for fluorescence resonance energy transfer (FRET)-based "off-on" fluorescence imaging as well as gold nanoparticles (Au NPs) tag for both ICP-MS quantification and fluorescence quenching. Due to the signal amplification effect and low spectral interference of Au NPs in ICP-MS, an excellent linearity and sensitivity were achieved. Accordingly, a limit of detection of 81 MCF-7 cells and a relative standard deviation of 5.6% (800 cells, n = 7) were obtained. The dynamic linear range was 2 × 102 to 1.2 × 104 cells, and the recoveries in human whole blood were in the range of 98-110%. Overall, the established method provides quantitative and visualized information on MCF-7 cells with a simple and rapid process and paves the way for a promising strategy for biomedical research and clinical diagnostics.
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Affiliation(s)
- Bin Yang
- 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
| | - Man He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University , Wuhan 430072, China
| | - Xiao Yin
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University , Wuhan 430072, China
| | - Chi Xu
- 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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Liu R, Wang C, Xu Y, Hu J, Deng D, Lv Y. Label-Free DNA Assay by Metal Stable Isotope Detection. Anal Chem 2017; 89:13269-13274. [DOI: 10.1021/acs.analchem.7b03327] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Chaoqun Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Yuming Xu
- College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, P. R. China
| | - Jianyu Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Dongyan Deng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, P. R. China
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Yang B, Zhang Y, Chen B, He M, Yin X, Wang H, Li X, Hu B. A multifunctional probe for ICP-MS determination and multimodal imaging of cancer cells. Biosens Bioelectron 2017; 96:77-83. [DOI: 10.1016/j.bios.2017.04.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 04/19/2017] [Accepted: 04/25/2017] [Indexed: 12/20/2022]
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48
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Pérez E, Martínez-Peinado P, Marco F, Gras L, Sempere JM, Mora J, Grindlay G. Determination of aflatoxin M1 in milk samples by means of an inductively coupled plasma mass spectrometry-based immunoassay. Food Chem 2017; 230:721-727. [DOI: 10.1016/j.foodchem.2017.03.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 01/24/2017] [Accepted: 03/13/2017] [Indexed: 11/17/2022]
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49
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Liu Z, Li X, Xiao G, Chen B, He M, Hu B. Application of inductively coupled plasma mass spectrometry in the quantitative analysis of biomolecules with exogenous tags: A review. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.05.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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50
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Yang B, Zhang Y, Chen B, He M, Hu B. Elemental-tagged immunoassay combined with inductively coupled plasma mass spectrometry for the detection of tumor cells using a lead sulfide nanoparticle label. Talanta 2017; 167:499-505. [DOI: 10.1016/j.talanta.2017.02.063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 02/20/2017] [Accepted: 02/26/2017] [Indexed: 12/22/2022]
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