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Han B, Cheng D, Luo H, Li J, Wu J, Jia X, Xu M, Sun P, Cheng S. Peptidomic analysis reveals novel peptide PDLC promotes cell proliferation in hepatocellular carcinoma via Ras/Raf/MEK/ERK pathway. Sci Rep 2024; 14:18757. [PMID: 39138279 PMCID: PMC11322383 DOI: 10.1038/s41598-024-69789-3] [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: 09/22/2023] [Accepted: 08/08/2024] [Indexed: 08/15/2024] Open
Abstract
Hepatocellular carcinoma (HCC) still presents poor prognosis with low overall survival rates and limited therapeutic options available. Recently, attention has been drawn to peptidomic analysis, an emerging field of proteomics for the exploration of new potential peptide drugs for the treatment of various diseases. However, research on the potential function of HCC peptides is lacking. Here, we analyzed the peptide spectrum in HCC tissues using peptidomic techniques and explored the potentially beneficial peptides involved in HCC. Changes in peptide profiles in HCC were examined using liquid chromatography-mass spectrometry (LC-MS/MS). Analyze the physicochemical properties and function of differently expressed peptides using bioinformatics. The effect of candidate functional peptides on HCC cell growth and migration was evaluated using the CCK-8, colony formation, and transwell assays. Transcriptome sequencing analysis and western blot were employed to delve into the mode of action of potential peptide on HCC. Peptidomic analysis of HCC tissue yielded a total of 8683 peptides, of which 452 exhibited up-regulation and 362 showed down-regulation. The peptides that were differentially expressed, according to bioinformatic analysis, were closely linked to carbon metabolism and the mitochondrial inner membrane. The peptide functional validation identified a novel peptide, PDLC (peptide derived from liver cancer), which was found to dramatically boost HCC cell proliferation through the Ras/Raf/MEK/ERK signaling cascade. Our research defined the peptide's properties and pattern of expression in HCC and identified a novel peptide, PDLC, with a function in encouraging HCC progression, offering an entirely new potential therapeutic target the disease.
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Affiliation(s)
- Bo Han
- Key Laboratory for Translational Research and Innovative Therapeutics of Gastrointestinal Oncology, Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Daqing Cheng
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huizhao Luo
- Rehabilitation Department, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jutang Li
- Key Laboratory for Translational Research and Innovative Therapeutics of Gastrointestinal Oncology, Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiaoxiang Wu
- Key Laboratory for Translational Research and Innovative Therapeutics of Gastrointestinal Oncology, Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xing Jia
- Department of Urology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ming Xu
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peng Sun
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Sheng Cheng
- Key Laboratory for Translational Research and Innovative Therapeutics of Gastrointestinal Oncology, Hongqiao International Institute of Medicine, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Department of General Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Yao H, Yang Y, Pan S, Zhao R, Cai Y, Zhang S, Li H. Covalent Organic Framework Nanosheets for Fluorescence Quantification of Peptide. Anal Chem 2023. [PMID: 37314945 DOI: 10.1021/acs.analchem.3c01381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Rapid and sensitive quantification of peptides plays an important role in clinical diagnosis. Fluorescence assay is one of the most promising peptide detection tools, but it relies on intrinsic fluorescence or additional derivatization, resulting in poor versatility. Covalent organic frameworks (COFs) have shown a good application prospect in the field of fluorescence detection, but their application scope is limited to heavy metal ions and some small polar organic molecules. Herein, we report the application of COFs nanosheet for fluorescence detection of peptides. Fluorescent sp2 acrylonitrile-linked COFs nanosheets (TTAN-CON) were prepared by water-assisted ultrasonic exfoliation which performed with excellent fluorescence properties with Stokes shifts of 146 nm and fluorescence quantum yield of up to 24.45%. Compared to the bulk fluorescent COFs, exfoliated CONs films performed with better stability of fluorescence signal in solution. We found the fluorescence of TTAN-CON can be effectively quenched by hydrophobic peptides at a very rapid rate (less than 5 min per sample). TTAN-CON presented good sensitivity and selectivity for hydrophobic peptides detection via the static and dynamic joint quenching mechanism. TTAN-CON was further used to detect NLLGLIEAK and ProGRP31-98, two target peptide fragments of lung cancer biomarker ProGRP. The fluorescence intensities of TTAN-CON were negative linearly correlated with the amounts of hydrophobic NLLGLIEAK over the range of 5-1000 ng/mL with the correlation coefficients over 0.99, and the limit of detection was 1.67 ng/mL, displaying higher sensitivity and convenience than traditional optical methods. What's more, the quantification of ProGRP31-98 was achieved by the quantification of hydrophobic peptides in its enzyme hydrolysis products. We anticipate COFs nanosheets to be a universal fluorescence detection work-box for peptides biomarkers with clinical significance.
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Affiliation(s)
- Huan Yao
- National Institute of Metrology, Beijing 100029, China
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, Beijing 100029, China
| | - Yongliang Yang
- Research Institute of Petroleum Processing, Sinopec, Beijing 100083, China
| | - Siyuan Pan
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Rong Zhao
- National Institute of Metrology, Beijing 100029, China
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, Beijing 100029, China
| | - Yaqi Cai
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Sichun Zhang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Hongmei Li
- National Institute of Metrology, Beijing 100029, China
- Key Laboratory of Chemical Metrology and Applications on Nutrition and Health for State Market Regulation, Beijing 100029, China
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3
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Han T, Cong H, Yu B, Shen Y. Application of peptide biomarkers in life analysis based on liquid chromatography-mass spectrometry technology. Biofactors 2022; 48:725-743. [PMID: 35816279 DOI: 10.1002/biof.1875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 06/18/2022] [Indexed: 12/11/2022]
Abstract
Biomedicine is developing rapidly in the 21st century. Among them, the qualitative and quantitative analysis of peptide biomarkers is of considerable importance for the diagnosis and therapy of diseases and the quality evaluation of drugs and food. The identification and quantitative analysis of peptides have been going on for decades. Traditionally, immunoassays or biological assays are generally used to quantify peptides in biological matrices. However, the selectivity and sensitivity of these methods cannot meet the requirements of the application. The separation and analysis technique of liquid chromatography-mass spectrometry (LC-MS) supplies a reliable alternative. In contrast to immunoassays, LC-MS methods are capable of providing the analytical prowess necessary to satisfy the demands of peptide biomarker research in the life sciences arena. This review article provides a historical account of the in-roads made by LC-MS technology for the detection of peptide biomarkers in the past 10 years, with the focus on the qualification/quantification developments and their applications.
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Affiliation(s)
- Tingting Han
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
| | - Hailin Cong
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, China
| | - Bing Yu
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao, China
| | - Youqing Shen
- Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, China
- Center for Bionanoengineering and Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
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4
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Zhi LJ, Sun AL. Platinum nanozyme-encapsulated poly(amidoamine) dendrimer for voltammetric immunoassay of pro-gastrin-releasing peptide. Anal Chim Acta 2020; 1134:106-114. [DOI: 10.1016/j.aca.2020.08.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 08/04/2020] [Accepted: 08/14/2020] [Indexed: 12/12/2022]
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Zhao Y, Sun Q, Zhang X, Baeyens J, Su H. Self-assembled selenium nanoparticles and their application in the rapid diagnostic detection of small cell lung cancer biomarkers. SOFT MATTER 2018; 14:481-489. [PMID: 29177363 DOI: 10.1039/c7sm01687e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
By coupling molecular imprinting, chitosan biosorption and TiO2 photocatalysis, selenium nanoparticles (Se NPs) were self-assembled in a controlled manner on the molecular imprinting sites of zeolite-chitosan-TiO2 microspheres. Se NPs with different sizes and areal densities were individually synthesized by controlling the rapid adsorption of molecular-imprinted nanocomposites and photocatalytic reaction of TiO2 nanoparticles. In order to improve the sensitivity and specificity of rapid diagnostic detection, Se NPs were self-assembled again into high-order and spherically stable structures with an average size of 80 nm by well-defined monomer units, after separation from zeolite-chitosan-TiO2 microspheres with a stabilizer of 0.3% (v/v) bovine serum albumin. Due to their biological activity, spherical-shaped Se NPs were used for dot-blot immunoassays with multiple native antigens for rapid serodiagnosis of human lung cancer. The sensitivity of the dot immunoassays for detecting progastrin-releasing peptide (ProGRP) was 75 pg mL-1. The detection time of colloidal Se dot immunoassays for ProGRP was only 5 min. No positive results were observed with other commonly potential interfering substances, including carcinoembryonic antigen, α-fetoprotein antigen and BSA. The research presents a simple and green method for the reuse of SeO32- and the controlled synthesis of Se NPs for biological and medical applications by bioaffinity adsorption and photoreduction.
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Affiliation(s)
- Yilin Zhao
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
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Wang L. Screening and Biosensor-Based Approaches for Lung Cancer Detection. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2420. [PMID: 29065541 PMCID: PMC5677261 DOI: 10.3390/s17102420] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/17/2017] [Accepted: 10/18/2017] [Indexed: 02/07/2023]
Abstract
Early diagnosis of lung cancer helps to reduce the cancer death rate significantly. Over the years, investigators worldwide have extensively investigated many screening modalities for lung cancer detection, including computerized tomography, chest X-ray, positron emission tomography, sputum cytology, magnetic resonance imaging and biopsy. However, these techniques are not suitable for patients with other pathologies. Developing a rapid and sensitive technique for early diagnosis of lung cancer is urgently needed. Biosensor-based techniques have been recently recommended as a rapid and cost-effective tool for early diagnosis of lung tumor markers. This paper reviews the recent development in screening and biosensor-based techniques for early lung cancer detection.
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Affiliation(s)
- Lulu Wang
- School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei 230009, China.
- Institute of Biomedical Technologies, Auckland University of Technology, Auckland 1142, New Zealand.
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Automated Protein Biomarker Analysis: on-line extraction of clinical samples by Molecularly Imprinted Polymers. Sci Rep 2017; 7:44298. [PMID: 28303910 PMCID: PMC5355873 DOI: 10.1038/srep44298] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 01/26/2017] [Indexed: 12/30/2022] Open
Abstract
Robust biomarker quantification is essential for the accurate diagnosis of diseases and is of great value in cancer management. In this paper, an innovative diagnostic platform is presented which provides automated molecularly imprinted solid-phase extraction (MISPE) followed by liquid chromatography-mass spectrometry (LC-MS) for biomarker determination using ProGastrin Releasing Peptide (ProGRP), a highly sensitive biomarker for Small Cell Lung Cancer, as a model. Molecularly imprinted polymer microspheres were synthesized by precipitation polymerization and analytical optimization of the most promising material led to the development of an automated quantification method for ProGRP. The method enabled analysis of patient serum samples with elevated ProGRP levels. Particularly low sample volumes were permitted using the automated extraction within a method which was time-efficient, thereby demonstrating the potential of such a strategy in a clinical setting.
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8
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Huang Z, Zhang J, Zhang P, Wang H, Pan Z, Wang L. Analysis of volatile organic compounds in pleural effusions by headspace solid-phase microextraction coupled with cryotrap gas chromatography and mass spectrometry. J Sep Sci 2016; 39:2544-52. [DOI: 10.1002/jssc.201600279] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/24/2016] [Accepted: 04/26/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Zhongping Huang
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou China
| | - Jie Zhang
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou China
| | - Peipei Zhang
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou China
| | - Hong Wang
- Respiratory Department; Zhejiang Provincial People's Hospital; Hangzhou China
| | - Zaifa Pan
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou China
| | - Lili Wang
- College of Chemical Engineering; Zhejiang University of Technology; Hangzhou China
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Rossetti C, Abdel Qader A, Halvorsen TG, Sellergren B, Reubsaet L. Antibody-Free Biomarker Determination: Exploring Molecularly Imprinted Polymers for Pro-Gastrin Releasing Peptide. Anal Chem 2014; 86:12291-8. [DOI: 10.1021/ac503559c] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Cecilia Rossetti
- Department
of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, NO-0316 Oslo, Norway
| | - Abed Abdel Qader
- Department
of Environmental Chemistry and Analytical Chemistry,
Institute for Environmental Research (INFU), Technical University of Dortmund, D-44221 Dortmund, Germany
| | - Trine Grønhaug Halvorsen
- Department
of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, NO-0316 Oslo, Norway
| | - Börje Sellergren
- Department
of Environmental Chemistry and Analytical Chemistry,
Institute for Environmental Research (INFU), Technical University of Dortmund, D-44221 Dortmund, Germany
- Department
of Biomedical Sciences, Faculty of Health and Society, University of Malmö, 205 06 Malmö, Sweden
| | - Léon Reubsaet
- Department
of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, NO-0316 Oslo, Norway
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10
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Peptide imprinted receptors for the determination of the small cell lung cancer associated biomarker progastrin releasing peptide. J Chromatogr A 2014; 1370:56-62. [DOI: 10.1016/j.chroma.2014.10.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/06/2014] [Accepted: 10/08/2014] [Indexed: 11/22/2022]
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11
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Torsetnes SB, Levernæs MS, Broughton MN, Paus E, Halvorsen TG, Reubsaet L. Multiplexing Determination of Small Cell Lung Cancer Biomarkers and Their Isovariants in Serum by Immunocapture LC-MS/MS. Anal Chem 2014; 86:6983-92. [DOI: 10.1021/ac500986t] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Silje B. Torsetnes
- Department
of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, NO-0316, Norway
| | - Maren S. Levernæs
- Department
of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, NO-0316, Norway
| | - Marianne N. Broughton
- Department
of Medical Biochemistry, Oslo University Hospital, Radiumhospitalet, Oslo, 0310, Norway
| | - Elisabeth Paus
- Department
of Medical Biochemistry, Oslo University Hospital, Radiumhospitalet, Oslo, 0310, Norway
| | - Trine G. Halvorsen
- Department
of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, NO-0316, Norway
| | - Léon Reubsaet
- Department
of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, NO-0316, Norway
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12
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Kim DH, Allwood JW, Moore RE, Marsden-Edwards E, Dunn WB, Xu Y, Hampson L, Hampson IN, Goodacre R. A metabolomics investigation into the effects of HIV protease inhibitors on HPV16 E6 expressing cervical carcinoma cells. MOLECULAR BIOSYSTEMS 2014; 10:398-411. [PMID: 24413339 DOI: 10.1039/c3mb70423h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recently, it has been reported that anti-viral drugs, such as indinavir and lopinavir (originally targeted for HIV), also inhibit E6-mediated proteasomal degradation of mutant p53 in E6-transfected C33A cells. In order to understand more about the mode-of-action(s) of these drugs the metabolome of HPV16 E6 expressing cervical carcinoma cell lines was investigated using mass spectrometry (MS)-based metabolic profiling. The metabolite profiling of C33A parent and E6-transfected cells exposed to these two anti-viral drugs was performed by ultra performance liquid chromatography (UPLC)-MS and gas chromatography (GC)-time of flight (TOF)-MS. Using a combination of univariate and multivariate analyses, these metabolic profiles were investigated for analytical and biological reproducibility and to discover key metabolite differences elicited during anti-viral drug challenge. This approach revealed both distinct and common effects of these two drugs on the metabolome of two different cell lines. Finally, intracellular drug levels were quantified, which suggested in the case of lopinavir that increased activity of membrane transporters may contribute to the drug sensitivity of HPV infected cells.
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Affiliation(s)
- Dong-Hyun Kim
- School of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
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13
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Torsetnes SB, Løvbak SG, Claus C, Lund H, Nordlund MS, Paus E, Halvorsen TG, Reubsaet L. Immunocapture and LC–MS/MS for selective quantification and differentiation of the isozymes of the biomarker neuron-specific enolase in serum. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 929:125-32. [DOI: 10.1016/j.jchromb.2013.04.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 04/06/2013] [Accepted: 04/12/2013] [Indexed: 11/17/2022]
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Torsetnes SB, Nordlund MS, Paus E, Halvorsen TG, Reubsaet L. Digging deeper into the field of the small cell lung cancer tumor marker ProGRP: a method for differentiation of its isoforms. J Proteome Res 2012. [PMID: 23190087 DOI: 10.1021/pr300751j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, we have used a newly developed immunocapture and LC-MS method to demonstrate for the first time the presence of protein isoforms 1 and 3 of the small cell lung cancer (SCLC) marker progastrin-releasing peptide (ProGRP) in sera. In addition, the method allows for indirect determination of the relative presence of the other known isoform of ProGRP, also known as ProGRP isoform 2. This new method is able to determine total ProGRP as a marker in sera at clinically relevant levels and to differentiate between isoforms at the low-pM level through combining selective sample preparation by immunoextraction, tryptic digestion, and separation followed by detection with LC-SRM-MS of the signature peptides, NLLGLIEAK (total ProGRP), LSAPGSQR (ProGRP isoform 1), and DLVDSLLQVLNVK (ProGRP isoform 3), with accuracies ≤ 25% for lower limit of quantification (LLOQ) and precisions ≤ 33%. By analyzing serum samples from four patients diagnosed with SCLC using the here described new and fully validated method, the ability is shown to both determine total ProGRP concentration and to differentiate between ProGRP isoforms 1 and 3 in one single run. Quantification of various ProGRP isoforms in one single run may be helpful for further understanding of the underlying biochemical processes in SCLC and differentiation of small cell lung cancer.
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Affiliation(s)
- Silje Bøen Torsetnes
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, Norway
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15
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Liu Z, Zhou X, Shi Y, Du S, Yang Y, Tang J, Shen Y. Study on biodistribution and radioimmunoimaging of (131)iodine-labeled monoclonal antibody D-D3 against progastrin-releasing peptide31-98 in tumor-bearing mouse. Cancer Biother Radiopharm 2011; 26:229-35. [PMID: 21510749 DOI: 10.1089/cbr.2010.0855] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study was aimed at investigating the biodistribution and radioimmunoimaging of (131)I-D-D3 in nude mice bearing different types of tumor xenografts. Radioiodination of the D-D3 antibody was performed with the chloramine-T method. The radiochemical purity was determined through thin-layer chromotography. (131)I-D-D3 was injected into healthy Kunming mice via a tail vein, and the %ID/g for various organs was obtained. Similarly, the %ID/g and tumor/nontumor tissue ratio of (131)I-D-D3 in nude mice bearing small cell lung cancer (SCLC) xenografts were obtained. Planar images of (131)I-D-D3 in tumor-bearing nude mice were acquired at different times after injection. The (131)I-D-D3 labeling rate was 86.56% ± 3.8%. The radiochemical purity of (131)I-D-D3 was 99.27% ± 0.6%. After 12 hours of incubation in 37°C water bath, the radiochemical purity was 97.64% ± 0.5% and remained at 88.38% ± 0.4% after 48 hours. After being mixed with healthy human serum for 24 hours, the radiochemical purity was more than 64%. The metabolism of (131)I-D-D3 in healthy Kunming mice was consistent with a two-compartment model with first-order absorption; T(1/2α) and T(1/2β) were 0.25 and 37.89 hours, respectively. The %ID/g of (131)I-D-D3 in SCLC xenografts was much higher than those of other tissues at 48 hours after injection, and the tumor/nontumor tissue ratio also gradually increased with time. After 24 hours of injection, planar imaging was obtained, which clearly showed a contrasting tumor on the right armpit of nude mice bearing SCLC with high concentrations of radioactivity. Also, nude mice bearing gastric cancer showed similar results as that of the SCLC with a lower radioactivity level. No observable accumulation was observed in nude mice bearing pancreatic cancer or lung adenocarcinoma. The labeling rate and radiochemical purity of (131)I-D-D3 were high and stable. (131)I-D-D3 selectively accumulated at tumors that highly expressed progastrin-releasing peptide; therefore, it is a promising radioimmunoimaging reagent for SCLC.
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Affiliation(s)
- Zengli Liu
- Department of Nuclear Medicine, The Second Affiliated Hospital of Soochow University, Suzhou, China
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16
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Törnvall U, Fürst CM, Hatti-Kaul R, Hedström M. Mass spectrometric analysis of peptides from an immobilized lipase: focus on oxidative modifications. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2009; 23:2959-2964. [PMID: 19681098 DOI: 10.1002/rcm.4208] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Liquid chromatography/tandem mass spectrometry (LC/MS/MS) was used to study the primary structure of immobilized Candida antarctica lipase B (Novozym(R)435) without detaching the enzyme from the carrier. The immobilized enzyme packed in a miniature column was subjected to proteolysis and the peptides released were injected into the mass spectrometer for analysis. The set-up was utilized to determine amino acid oxidation after treatment of the biocatalyst with hydrogen peroxide. In total, sequence coverage of more than 90% was obtained, containing almost all of the amino acids sensitive to oxidation. Oxidation of methionine, tryptophan and cystine residues was observed. The flow system also allowed evaluation of the enzyme activity prior to peptide analysis. The developed method is general and should be applicable to other immobilized enzyme systems and to different treatments.
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Affiliation(s)
- Ulrika Törnvall
- Department of Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
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17
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Winther B, Nordlund M, Paus E, Reubsaet L, Halvorsen TG. Immuno-capture as ultimate sample cleanup in LC-MS/MS determination of the early stage biomarker ProGRP. J Sep Sci 2009; 32:2937-43. [DOI: 10.1002/jssc.200900233] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Winther B, Moi P, Paus E, Reubsaet JLE. Targeted determination of the early stage SCLC specific biomarker pro-gastrin-releasing peptide (ProGRP) at clinical concentration levels in human serum using LC-MS. J Sep Sci 2007; 30:2638-46. [PMID: 17874417 DOI: 10.1002/jssc.200700221] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Pro-gastrin-releasing peptide (ProGRP) is used as a specific diagnostic marker for small cell lung cancer (SCLC), a rapidly growing neoplasm with high mortality. Our object was to develop an LC-MS method for the detection and quantification of ProGRP in human serum using the specific tryptic digestion product NLLGLIEAK (m/z 485.8 for [M + 2H](2+)). For this purpose the sample pretreatment, clean-up, enrichment, and LC-MS conditions were evaluated. Sample pretreatment was carried out using ACN precipitation to decrease the sample complexity. Although ProGRP (31-98) standards were soluble in 99% ACN, it showed that optimal signal intensities were obtained by adding ACN to the serum in a 1:1 ratio v/v. A simplified tryptic digest protocol was carried out using 100 mM triethanolamine buffer to ensure pH stability during the whole procedure. The simplified protocol also includes omission of reducing and alkylating reagents. Necessary additional sample clean-up was achieved by trapping NLLGLIEAK on a RAM column (ADS-C8) which was back-flushed onto the analytical BioBasic C8 column. Volume of injection, sample enrichment, and column capacity are among the factors optimized to reach a mass LOD of 150 pg on column (OC) ProGRP (31-98). Detection of ProGRP in the serum sample of a patient suffering from SCLC with a clinically relevant concentration shows the potential of the method in diagnosis, prognosis, and monitoring of the disease.
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Affiliation(s)
- Bjørn Winther
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, Oslo, Norway.
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