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Wang J, Zhao X, Zhang H, Chen Y, Bie Z. In situ digestion-assisted multi-template imprinted nanoparticles for efficient analysis of protein phosphorylation. Mikrochim Acta 2023; 190:490. [PMID: 38030869 DOI: 10.1007/s00604-023-06081-7] [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: 07/27/2023] [Accepted: 10/29/2023] [Indexed: 12/01/2023]
Abstract
A new general approach called in situ digestion-assisted multi-template imprinting is proposed for preparation of phospho-specific molecularly imprinted nanoparticles. Through the novel templating strategy and controllable imprinting process, imprinted nanoparticles specific to the intact phosphoprotein and its phosphopeptides were synthesized. The prepared imprinted nanoparticles exhibited excellent specificity (cross reactivity < 10%), high affinity (10-6 M), high efficiency (47.5%), and good generality (both intact phosphoprotein and phosphopeptides). We also realized the fine tuning of the recognition at peptide level of the imprinted nanoparticles by adjusting the imprinting time. Based on the selective enrichment of the imprinted nanoparticles, the MS identification of both the intact phosphoprotein (Tau) and phosphopeptides (angiotensin II and peptides of Tau) in real complex samples could be achieved. Therefore, we believe that the in situ digestion-assisted multi-template imprinting strategy holds promising future in both phosphorylation analysis and proteomics applications.
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Affiliation(s)
- Jie Wang
- Department of Chemistry, Bengbu Medical University, 2600 Donghai Avenue, Bengbu, 233030, China
| | - Xiuling Zhao
- School of Pharmacy, Bengbu Medical University, 2600 Donghai Avenue, Bengbu, 233000, China
| | - Hui Zhang
- Department of Chemistry, Bengbu Medical University, 2600 Donghai Avenue, Bengbu, 233030, China
| | - Yang Chen
- Department of Chemistry, Bengbu Medical University, 2600 Donghai Avenue, Bengbu, 233030, China
- School of Pharmacy, Bengbu Medical University, 2600 Donghai Avenue, Bengbu, 233000, China
| | - Zijun Bie
- Department of Chemistry, Bengbu Medical University, 2600 Donghai Avenue, Bengbu, 233030, China.
- School of Pharmacy, Bengbu Medical University, 2600 Donghai Avenue, Bengbu, 233000, China.
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2
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Jiang D, Wu S, Li Y, Qi R, Liu J. Effective Enrichment of Phosphopeptides Using Magnetic Polyoxometalate-Based Metal-Organic Frameworks. ACS Biomater Sci Eng 2023; 9:5632-5638. [PMID: 37694584 DOI: 10.1021/acsbiomaterials.3c00986] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
In this study, magnetic polyoxometalate-based metal-organic frameworks (Fe3O4-POMOFs) were designed and applied to the enrichment of phosphopeptides. Thanks to the abundant metal oxide and metal ion sites, the material had a strong affinity for phosphopeptides. Simultaneously, the high amount of amino and guanidyl groups provided hydrophilicity and positive charge for phosphopeptide capture. By coupling with MS detection, the established platform possessed good reusability, high sensitivity (0.01 fmol), and high selectivity (α-casein/β-casein/bovine serum albumin = 1:1:5000). Furthermore, the method was successfully used for the detection of phosphopeptides in nonfat milk, human serum, saliva, and A549 cell lysate, showing great potential for practical application.
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Affiliation(s)
- Dandan Jiang
- College of Chemistry and Materials Science, Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), Inner Mongolia Minzu University, Tongliao 028000, PR China
| | - Siyu Wu
- College of Chemistry and Materials Science, Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), Inner Mongolia Minzu University, Tongliao 028000, PR China
| | - Yangyang Li
- College of Chemistry and Materials Science, Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), Inner Mongolia Minzu University, Tongliao 028000, PR China
| | - Ruixue Qi
- College of Chemistry and Materials Science, Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), Inner Mongolia Minzu University, Tongliao 028000, PR China
| | - Jinghai Liu
- College of Chemistry and Materials Science, Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), Inner Mongolia Minzu University, Tongliao 028000, PR China
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3
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Rejeeth C, Sharma A. Label-free designed nanomaterials enrichment and separation techniques for phosphoproteomics based on mass spectrometry. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.1047055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The surface chemical characteristics of nanomaterials have a substantial impact on the affinity probe used to enrich proteins and peptides for MALDI-MS analysis of a real human sample. Detecting phosphoproteins involved in signalling is always difficult, even with recent developments in mass spectrometry, because protein phosphorylation is often temporary from complicated mixtures. This review summarizes current research on the successful enrichment of various intriguing glycoproteins and glycol peptides using surface affinity materials with distinctive qualities such as low cost, excellent structural stability, diversity, and multifunction. As a consequence, this review will provide a quick overview of the scholars from various backgrounds who are working in this intriguing interdisciplinary field. Label-free cancer biomarkers and other diseases will benefit from future challenges.
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4
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Lu W, Cao Y, Qing G. Recent advance in solid state nanopores modification and characterization. Chem Asian J 2022; 17:e202200675. [PMID: 35974427 DOI: 10.1002/asia.202200675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/16/2022] [Indexed: 11/08/2022]
Abstract
Nanopore, due to its advantages of modifiable, controllability and sensitivity, has made a splash in recent years in the fields of biomolecular sequencing, small molecule detection, salt differential power generation, and biomimetic ion channels, etc. In these applications, the role of chemical or biological modification is indispensable. Compared with small molecules, the modification of polymers is more difficult and the methods are more diverse. Choosing appropriate modification method directly determines the success or not of the research, therefore, it is necessary to summarize the polymer modification methods toward nanopores. In addition, it is also important to provide clear and convincing evidence that the nanopore modification is successful, the corresponding characterization methods are also indispensable. Therefore, this review will summarize the methods of polymer modification of nanopores and efficient characterization methods. And we hope that this review will provide some reference value for like-minded researchers.
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Affiliation(s)
- Wenqi Lu
- Chinese Academy of Sciences Dalian Institute of Chemical Physics, CAS Key Laboratory of Separation Science for Analytical Chemistry, 116023, Dalian, CHINA
| | - Yuchen Cao
- Chinese Academy of Sciences Dalian Institute of Chemical Physics, CAS Key Laboratory of Separation Science for Analytical Chemistry, 116023, Dalian, CHINA
| | - Guangyan Qing
- Dalian Institute of Chemical Physics, CAS Key Laboratory of Separation Science for Analytical Chemistry, 457 Zhongshan Road, 116023, Dalian, CHINA
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5
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Nanotheranostic agents for neurodegenerative diseases. Emerg Top Life Sci 2021; 4:645-675. [PMID: 33320185 DOI: 10.1042/etls20190141] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/16/2020] [Accepted: 11/19/2020] [Indexed: 02/07/2023]
Abstract
Neurodegenerative diseases (NDDs), including Alzheimer's disease (AD) and Parkinson's disease (PD), affect the ageing population worldwide and while severely impairing the quality of life of millions, they also cause a massive economic burden to countries with progressively ageing populations. Parallel with the search for biomarkers for early detection and prediction, the pursuit for therapeutic approaches has become growingly intensive in recent years. Various prospective therapeutic approaches have been explored with an emphasis on early prevention and protection, including, but not limited to, gene therapy, stem cell therapy, immunotherapy and radiotherapy. Many pharmacological interventions have proved to be promising novel avenues, but successful applications are often hampered by the poor delivery of the therapeutics across the blood-brain-barrier (BBB). To overcome this challenge, nanoparticle (NP)-mediated drug delivery has been considered as a promising option, as NP-based drug delivery systems can be functionalized to target specific cell surface receptors and to achieve controlled and long-term release of therapeutics to the target tissue. The usefulness of NPs for loading and delivering of drugs has been extensively studied in the context of NDDs, and their biological efficacy has been demonstrated in numerous preclinical animal models. Efforts have also been made towards the development of NPs which can be used for targeting the BBB and various cell types in the brain. The main focus of this review is to briefly discuss the advantages of functionalized NPs as promising theranostic agents for the diagnosis and therapy of NDDs. We also summarize the results of diverse studies that specifically investigated the usage of different NPs for the treatment of NDDs, with a specific emphasis on AD and PD, and the associated pathophysiological changes. Finally, we offer perspectives on the existing challenges of using NPs as theranostic agents and possible futuristic approaches to improve them.
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6
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Ionic liquid modification of metal-organic framework endows high selectivity for phosphoproteins adsorption. Anal Chim Acta 2021; 1147:144-154. [PMID: 33485572 DOI: 10.1016/j.aca.2020.12.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 02/02/2023]
Abstract
Zr-based metal-organic framework, UiO-66-NH2, provides favorable adsorption capacity to phosphoproteins, however, it exhibits obvious nonspecific adsorption to other proteins. In the present work, we report a facile strategy to reduce the nonspecific adsorption of nonphosphoproteins by modifying UiO-66-NH2 with imidazolium ionic liquids (ILs). With respect to bare UiO-66-NH2, the modified counterpart, UiO@IL, exhibits much improved selectivity to phosphoproteins while maintains comparable adsorption performance. The surface of UiO@IL presents a strong hydrophilicity due to the modification of ILs. Hydrophobic and electrostatic interaction between the absorbent and nonphosphoprotein is significantly reduced. In addition, the interaction between imidazole group of ILs moiety and phosphate group in phosphoprotein ensures the favorable adsorption capacity of UiO@IL for phosphoproteins. Anionic moieties of ILs, i.e., Cl-, Br-, BF4-, CF3SO3-, play negligible effect in the adsorption process. As a representative, phosphoprotein β-casein (β-ca) is selectively enriched at a mass ratio of BSA:β-ca = 100:1. UiO@IL was further applied for the selective enrichment of phosphoprotein in milk.
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Abyadeh M, Meyfour A, Gupta V, Zabet Moghaddam M, Fitzhenry MJ, Shahbazian S, Hosseini Salekdeh G, Mirzaei M. Recent Advances of Functional Proteomics in Gastrointestinal Cancers- a Path towards the Identification of Candidate Diagnostic, Prognostic, and Therapeutic Molecular Biomarkers. Int J Mol Sci 2020; 21:ijms21228532. [PMID: 33198323 PMCID: PMC7697099 DOI: 10.3390/ijms21228532] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/02/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023] Open
Abstract
Gastrointestinal (GI) cancer remains one of the common causes of morbidity and mortality. A high number of cases are diagnosed at an advanced stage, leading to a poor survival rate. This is primarily attributed to the lack of reliable diagnostic biomarkers and limited treatment options. Therefore, more sensitive, specific biomarkers and curative treatments are desirable. Functional proteomics as a research area in the proteomic field aims to elucidate the biological function of unknown proteins and unravel the cellular mechanisms at the molecular level. Phosphoproteomic and glycoproteomic studies have emerged as two efficient functional proteomics approaches used to identify diagnostic biomarkers, therapeutic targets, the molecular basis of disease and mechanisms underlying drug resistance in GI cancers. In this review, we present an overview on how functional proteomics may contribute to the understanding of GI cancers, namely colorectal, gastric, hepatocellular carcinoma and pancreatic cancers. Moreover, we have summarized recent methodological developments in phosphoproteomics and glycoproteomics for GI cancer studies.
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Affiliation(s)
- Morteza Abyadeh
- Cell Science Research Center, Department of Molecular Systems Biology, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran; (M.A.); (G.H.S.)
| | - Anna Meyfour
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran 1985717413, Iran
- Cell Science Research Center, Department of Stem Cells and Developmental Biology, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran
- Correspondence: (A.M.); (M.M.)
| | - Vivek Gupta
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW 2113, Australia;
| | | | - Matthew J. Fitzhenry
- Australian Proteome Analysis Facility, Macquarie University, Macquarie Park, NSW 2113, Australia;
| | - Shila Shahbazian
- Department of Molecular Sciences, Macquarie University, Macquarie Park, NSW 2113, Australia;
| | - Ghasem Hosseini Salekdeh
- Cell Science Research Center, Department of Molecular Systems Biology, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran; (M.A.); (G.H.S.)
- Department of Molecular Sciences, Macquarie University, Macquarie Park, NSW 2113, Australia;
| | - Mehdi Mirzaei
- Department of Clinical Medicine, Macquarie University, Macquarie Park, NSW 2113, Australia;
- Correspondence: (A.M.); (M.M.)
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8
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GO-META-TiO2 composite monolithic columns for in-tube solid-phase microextraction of phosphopeptides. Talanta 2019; 192:360-367. [DOI: 10.1016/j.talanta.2018.09.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/02/2018] [Accepted: 09/09/2018] [Indexed: 02/09/2023]
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9
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Núñez C, Chantada-Vázquez MDP, Bravo SB, Vázquez-Estévez S. Novel functionalized nanomaterials for the effective enrichment of proteins and peptides with post-translational modifications. J Proteomics 2018; 181:170-189. [DOI: 10.1016/j.jprot.2018.04.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 04/02/2018] [Accepted: 04/09/2018] [Indexed: 02/07/2023]
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10
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Wang J, Zhang R, Yang X, Liu X, Zhang H. Facile synthesis of copper(II)-decorated functional mesoporous material for specific adsorption of histidine-rich proteins. Talanta 2018; 176:308-317. [DOI: 10.1016/j.talanta.2017.08.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/30/2017] [Accepted: 08/05/2017] [Indexed: 12/29/2022]
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11
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Hinman SS, Nguyen RCT, Cheng Q. Plasmonic nanodisc arrays on calcinated titania for multimodal analysis of phosphorylated peptides. RSC Adv 2017; 7:48068-48076. [PMID: 30701066 PMCID: PMC6349370 DOI: 10.1039/c7ra08870a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A hybrid material of gold nanodiscs on a calcinated titania nanofilm that allows for selective quantitative and qualitative characterization of surface-enriched phosphopeptides has been designed and reported. Fabrication was realized through a combination of layer-by-layer deposition and high temperature calcination for the titania, and hole-mask colloidal lithography for the plasmonic nanostructures. The morphology of the resulting titania material was rigorously characterized, exhibiting substantially decreased surface roughness, which allows for lithographic fabrication of plasmonic nanostructures. Moreover, high specificity in adsorption and enrichment of phosphopeptides was exhibited, which was verified by LSPR shifts and matching peaks under mass spectrometric analysis. The construction of these biochips should inform other combinatorial nanofabrication techniques, in addition to allowing future phosphoproteomic analyses to be performed in a time and resource-efficient manner.
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Affiliation(s)
- Samuel S Hinman
- Environmental Toxicology, University of California - Riverside, Riverside, CA 92521, USA ; ; Tel: +1-951-827-2702
| | - Romie C T Nguyen
- Department of Chemistry, University of California - Riverside, Riverside, CA 92521, USA
| | - Quan Cheng
- Environmental Toxicology, University of California - Riverside, Riverside, CA 92521, USA ; ; Tel: +1-951-827-2702
- Department of Chemistry, University of California - Riverside, Riverside, CA 92521, USA
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12
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Lin H, Yuan K, Deng C. Preparation of a TiO 2-NH 2 modified MALDI plate for on-plate simultaneous enrichment of phosphopeptides and glycopeptides. Talanta 2017; 175:427-434. [PMID: 28842012 DOI: 10.1016/j.talanta.2017.07.078] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 07/18/2017] [Accepted: 07/25/2017] [Indexed: 01/21/2023]
Abstract
In this work, a TiO2 film was prepared on a MALDI plate by atomic layer deposition (ALD) technique and then modified with -NH2. The obtained TiO2-NH2 modified plate was applied for on-plate simultaneous enrichment of phosphopeptides and glycopeptides. The ALD TiO2 film displayed quite uniform morphology, and attached firmly to the MALDI plate with rather stable physical and chemical properties, which resulted in fine stability of the plate in performance. The -NH2 groups offered the film better hydrophilicity and affinity toward glycopeptides. The on-plate simultaneous enrichment performance of the TiO2-NH2 modified plate was investigated by β-casein digests, HRP digests and human serum.
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Affiliation(s)
- Haizhu Lin
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Kaiping Yuan
- State Key Laboratory of ASIC and System, Fudan University, Shanghai 200433, China
| | - Chunhui Deng
- Department of Chemistry and Institutes of Biomedical Sciences, Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai 200433, China.
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13
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Qi X, Chen L, Zhang C, Xu X, Zhang Y, Bai Y, Liu H. NiCoMnO4: A Bifunctional Affinity Probe for His-Tagged Protein Purification and Phosphorylation Sites Recognition. ACS APPLIED MATERIALS & INTERFACES 2016; 8:18675-18683. [PMID: 27381638 DOI: 10.1021/acsami.6b04280] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A bifunctional affinity probe NiCoMnO4 was designed and prepared with controllable morphology and size using facile methods. It was observed that the probe could be applied in His-tagged proteins purification and phosphopeptides enrichment simply through the buffer modulation. NiCoMnO4 particles showed satisfactory cycling performance for His-tagged proteins purification and broad pH-tolerance of loading buffer for phosphopeptides affinity. Therefore, a high-throughput, cost-effective, and efficient protein/peptide purification method was developed within 10 min based on the novel bifunctional affinity probe.
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Affiliation(s)
- Xiaoyue Qi
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Long Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Chaoqun Zhang
- Beijing Nuclear Magnetic Resonance Center, College of Life Science, Peking University , Beijing 100871, China
| | - Xinyuan Xu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Yiding Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Yu Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Huwei Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
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14
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Li XS, Yuan BF, Feng YQ. Recent advances in phosphopeptide enrichment: Strategies and techniques. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.11.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Lee J, Park IS, Park G, Cho K, Park HS, Min DH. A robust and quantitative assay platform for multiplexed, high throughput screening of protein kinase inhibitors. Chem Commun (Camb) 2016; 52:12112-12115. [DOI: 10.1039/c6cc05834e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a new platform for multiplexed protein kinase activity assay using TiO2decorated graphene oxide (GO), which is applicable to high throughput inhibitor screening.
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Affiliation(s)
- Jieon Lee
- Center for RNA Research
- Institute for Basic Science
- Department of Chemistry
- Seoul National University
- Seoul
| | - Il-Soo Park
- Center for RNA Research
- Institute for Basic Science
- Department of Chemistry
- Seoul National University
- Seoul
| | - Ginam Park
- Center for RNA Research
- Institute for Basic Science
- Department of Chemistry
- Seoul National University
- Seoul
| | - Kyukwang Cho
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Korea
| | - Hee-Sung Park
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Korea
| | - Dal-Hee Min
- Center for RNA Research
- Institute for Basic Science
- Department of Chemistry
- Seoul National University
- Seoul
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16
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Qiao J, Kim JY, Wang YY, Qi L, Wang FY, Moon MH. Trypsin immobilization in ordered porous polymer membranes for effective protein digestion. Anal Chim Acta 2015; 906:156-164. [PMID: 26772135 DOI: 10.1016/j.aca.2015.11.042] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/26/2015] [Accepted: 11/28/2015] [Indexed: 02/01/2023]
Abstract
Fast and effective protein digestion is a vital process for mass spectrometry (MS) based protein analysis. This study introduces a porous polymer membrane enzyme reactor (PPMER) coupled to nanoflow liquid chromatography-tandem MS (nLC-ESI-MS/MS) for on-line digestion and analysis of proteins. Poly (styrene-co-maleic anhydride) (PS-co-MAn) was fabricated by the breath figure method to make a porous polymer membrane in which the MAn group was covalently bound to enzyme. Based on this strategy, microscale PPMER (μPPMER) was constructed for on-line connection with the nLC-ESI-MS/MS system. Its capability for enzymatic digestion with bovine serum albumin (BSA) was evaluated with varied digestion periods. The on-line proteolysis of BSA and subsequent analysis with μPPMER-nLC-ESI-MS/MS revealed that peptide sequence coverage increased from 10.3% (digestion time 10 min) to 89.1% (digestion time 30 min). μPPMER can efficiently digest proteins due to the microscopic confinement effect, showing its potential application in fast protein identification and protease immobilization. Applications of on-line digestion using μPPMER with human plasma and urinary proteome samples showed that the developed on-line method yielded equivalent or better performance in protein coverage and identified more membrane proteins than the in-solution method. This may be due to easy accommodation of hydrophobic membrane proteins within membrane pores.
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Affiliation(s)
- Juan Qiao
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, PR China
| | - Jin Yong Kim
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul 120-749, South Korea
| | - Yuan Yuan Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, PR China
| | - Li Qi
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, PR China.
| | - Fu Yi Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun Beiyijie, Beijing 100190, PR China
| | - Myeong Hee Moon
- Department of Chemistry, Yonsei University, 50 Yonsei-ro, Seoul 120-749, South Korea.
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17
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Ning W, Bruening ML. Rapid Protein Digestion and Purification with Membranes Attached to Pipet Tips. Anal Chem 2015; 87:11984-9. [DOI: 10.1021/acs.analchem.5b03679] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wenjing Ning
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Merlin L. Bruening
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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18
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Pang Y, Wang WH, Reid GE, Hunt DF, Bruening ML. Pepsin-Containing Membranes for Controlled Monoclonal Antibody Digestion Prior to Mass Spectrometry Analysis. Anal Chem 2015; 87:10942-9. [PMID: 26455365 DOI: 10.1021/acs.analchem.5b02739] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Monoclonal antibodies (mAbs) are the fastest growing class of therapeutic drugs, because of their high specificities to target cells. Facile analysis of therapeutic mAbs and their post-translational modifications (PTMs) is essential for quality control, and mass spectrometry (MS) is the most powerful tool for antibody characterization. This study uses pepsin-containing nylon membranes as controlled proteolysis reactors for mAb digestion prior to ultrahigh-resolution Orbitrap MS analysis. Variation of the residence times (from 3 ms to 3 s) of antibody solutions in the membranes yields "bottom-up" (1-2 kDa) to "middle-down" (5-15 kDa) peptide sizes within less than 10 min. These peptides cover the entire sequences of Trastuzumab and a Waters antibody, and a proteolytic peptide comprised of 140 amino acids from the Waters antibody contains all three complementarity determining regions on the light chain. This work compares the performance of "bottom-up" (in-solution tryptic digestion), "top-down" (intact protein fragmentation), and "middle-down" (in-membrane digestion) analysis of an antibody light chain. Data from tandem MS show 99%, 55%, and 99% bond cleavage for "bottom-up", "top-down", and "middle-down" analyses, respectively. In-membrane digestion also facilitates detection of PTMs such as oxidation, deamidation, N-terminal pyroglutamic acid formation, and glycosylation. Compared to "bottom-up" and "top-down" approaches for antibody characterization, in-membrane digestion uses minimal sample preparation time, and this technique also yields high peptide and sequence coverage for the identification of PTMs.
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Affiliation(s)
- Yongle Pang
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Wei-Han Wang
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States
| | - Gavin E Reid
- School of Chemistry, Department of Biochemistry and Molecular Biology, Bio21 Molecular Science & Biotechnology Institute, The University of Melbourne , Parkville, Victoria 3010, Australia
| | - Donald F Hunt
- Department of Chemistry, University of Virginia , Charlottesville, Virginia 22904, United States.,Department of Pathology, Health Sciences Center, University of Virginia , Charlottesville, Virginia 22908, United States
| | - Merlin L Bruening
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
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Dong J, Bruening ML. Functionalizing Microporous Membranes for Protein Purification and Protein Digestion. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2015; 8:81-100. [PMID: 26001953 DOI: 10.1146/annurev-anchem-071114-040255] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This review examines advances in the functionalization of microporous membranes for protein purification and the development of protease-containing membranes for controlled protein digestion prior to mass spectrometry analysis. Recent studies confirm that membranes are superior to bead-based columns for rapid protein capture, presumably because convective mass transport in membrane pores rapidly brings proteins to binding sites. Modification of porous membranes with functional polymeric films or TiO₂ nanoparticles yields materials that selectively capture species ranging from phosphopeptides to His-tagged proteins, and protein-binding capacities often exceed those of commercial beads. Thin membranes also provide a convenient framework for creating enzyme-containing reactors that afford control over residence times. With millisecond residence times, reactors with immobilized proteases limit protein digestion to increase sequence coverage in mass spectrometry analysis and facilitate elucidation of protein structures. This review emphasizes the advantages of membrane-based techniques and concludes with some challenges for their practical application.
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Affiliation(s)
- Jinlan Dong
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824;
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20
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Wang G, He Z, Shi G, Wang H, Zhang Q, Li Y. Controllable construction of Titanium dioxide-Zirconium dioxide@Zinc hydroxyfluoride networks in micro-capillaries for bio-analysis. J Colloid Interface Sci 2015; 446:290-7. [DOI: 10.1016/j.jcis.2015.01.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 01/15/2015] [Accepted: 01/20/2015] [Indexed: 11/27/2022]
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21
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Wang ZG, Lv N, Bi WZ, Zhang JL, Ni JZ. Development of the affinity materials for phosphorylated proteins/peptides enrichment in phosphoproteomics analysis. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8377-92. [PMID: 25845677 DOI: 10.1021/acsami.5b01254] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Reversible protein phosphorylation is a key event in numerous biological processes. Mass spectrometry (MS) is the most powerful analysis tool in modern phosphoproteomics. However, the direct MS analysis of phosphorylated proteins/peptides is still a big challenge because of the low abundance and insufficient ionization of phosphorylated proteins/peptides as well as the suppression effects of nontargets. Enrichment of phosphorylated proteins/peptides by affinity materials from complex biosamples is the most widely used strategy to enhance the MS detection. The demand of efficiently enriching phosphorylated proteins/peptides has spawned diverse affinity materials based on different enrichment principles (e.g., electronic attraction, chelating). In this review, we summarize the recent development of various affinity materials for phosphorylated proteins/peptides enrichment. We will highlight the design and fabrication of these affinity materials, discuss the enrichment mechanisms involved in different affinity materials, and suggest the future challenges and research directions in this field.
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Affiliation(s)
- Zhi-Gang Wang
- †State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- ‡University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Nan Lv
- †State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- ‡University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wen-Zhi Bi
- †State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- ‡University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ji-Lin Zhang
- †State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jia-Zuan Ni
- †State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- §College of Life Science, Shenzhen University, Shenzhen 518060, P. R. China
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22
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Paleček E, Tkáč J, Bartošík M, Bertók T, Ostatná V, Paleček J. Electrochemistry of nonconjugated proteins and glycoproteins. Toward sensors for biomedicine and glycomics. Chem Rev 2015; 115:2045-108. [PMID: 25659975 PMCID: PMC4360380 DOI: 10.1021/cr500279h] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Indexed: 02/07/2023]
Affiliation(s)
- Emil Paleček
- Institute
of Biophysics Academy of Science of the Czech Republic, v.v.i., Královopolská
135, 612 65 Brno, Czech Republic
| | - Jan Tkáč
- Institute
of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
| | - Martin Bartošík
- Regional
Centre for Applied Molecular Oncology, Masaryk
Memorial Cancer Institute, Žlutý kopec 7, 656 53 Brno, Czech Republic
| | - Tomáš Bertók
- Institute
of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
| | - Veronika Ostatná
- Institute
of Biophysics Academy of Science of the Czech Republic, v.v.i., Královopolská
135, 612 65 Brno, Czech Republic
| | - Jan Paleček
- Central
European Institute of Technology, Masaryk
University, Kamenice
5, 625 00 Brno, Czech Republic
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23
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Sui D, Liu M, Kuo MH. In vitro aggregation assays using hyperphosphorylated tau protein. J Vis Exp 2015:e51537. [PMID: 25590418 DOI: 10.3791/51537] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Alzheimer's disease is one of a large group of neurodegenerative disorders known as tauopathies that are manifested by the neuronal deposits of hyperphosphorylated tau protein in the form of neurofibrillary tangles (NFTs). The density of NFT correlates well with cognitive impairment and other neurodegenerative symptoms, thus prompting the endeavor of developing tau aggregation-based therapeutics. Thus far, however, tau aggregation assays use recombinant or synthetic tau that is devoid of the pathology-related phosphorylation marks. Here we describe two assays using recombinant, hyperphosphorylated tau as the subject. These assays can be scaled up for high-throughput screens for compounds that can modulate the kinetics or stability of hyperphosphorylated tau aggregates. Novel therapeutics for Alzheimer's disease and other tauopathies can potentially be discovered using hyperphosphorylated tau isoforms.
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Affiliation(s)
- Dexin Sui
- Department of Biochemistry and Molecular Biology, Michigan State University
| | - Mengyu Liu
- Department of Biochemistry and Molecular Biology, Michigan State University
| | - Min-Hao Kuo
- Department of Biochemistry and Molecular Biology, Michigan State University;
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24
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Yang C, Zhong X, Li L. Recent advances in enrichment and separation strategies for mass spectrometry-based phosphoproteomics. Electrophoresis 2014; 35:3418-29. [PMID: 24687451 PMCID: PMC4849134 DOI: 10.1002/elps.201400017] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/21/2014] [Accepted: 03/21/2014] [Indexed: 12/29/2022]
Abstract
Due to the significance of protein phosphorylation in various biological processes and signaling events, new analytical techniques for enhanced phosphoproteomics have been rapidly introduced in the recent years. The combinatorial use of the phospho-specific enrichment techniques and prefractionation methods prior to MS analysis enable comprehensive profiling of the phosphoproteome and facilitate deciphering the critical roles that phosphorylation plays in signaling pathways in various biological systems. This review places special emphasis on the recent five-year (2009-2013) advances for enrichment and separation techniques that have been utilized for phosphopeptides prior to MS analysis.
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Affiliation(s)
- Chenxi Yang
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Xuefei Zhong
- School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, Wisconsin 53705, United States
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
- School of Pharmacy, University of Wisconsin, 777 Highland Avenue, Madison, Wisconsin 53705, United States
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Huang J, Wang F, Ye M, Zou H. Enrichment and separation techniques for large-scale proteomics analysis of the protein post-translational modifications. J Chromatogr A 2014; 1372C:1-17. [DOI: 10.1016/j.chroma.2014.10.107] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/31/2014] [Accepted: 10/31/2014] [Indexed: 12/16/2022]
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26
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Zhang Y, Sargent JL, Boudouris BW, Phillip WA. Nanoporous membranes generated from self-assembled block polymer precursors:Quo Vadis? J Appl Polym Sci 2014. [DOI: 10.1002/app.41683] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yizhou Zhang
- Department of Chemical and Biomolecular Engineering; University of Notre Dame; Notre Dame Indiana 46556
| | - Jessica L. Sargent
- School of Chemical Engineering, Purdue University; West Lafayette Indiana 47907
| | - Bryan W. Boudouris
- School of Chemical Engineering, Purdue University; West Lafayette Indiana 47907
| | - William A. Phillip
- Department of Chemical and Biomolecular Engineering; University of Notre Dame; Notre Dame Indiana 46556
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27
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Zhai R, Jiao F, Feng D, Hao F, Li J, Li N, Yan H, Wang H, Jin Z, Zhang Y, Qian X. Preparation of mixed lanthanides-immobilized magnetic nanoparticles for selective enrichment and identification of phosphopeptides by MS. Electrophoresis 2014; 35:3470-8. [DOI: 10.1002/elps.201400139] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2014] [Revised: 04/28/2014] [Accepted: 05/13/2014] [Indexed: 01/15/2023]
Affiliation(s)
- Rui Zhai
- College of Life Science and Bio-Engineering; Beijing University of Technology; Beijing P. R. China
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Fenglong Jiao
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Duan Feng
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Feiran Hao
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Jiabin Li
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Nannan Li
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Hui Yan
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Huanhuan Wang
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Zuyao Jin
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Yangjun Zhang
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
| | - Xiaohong Qian
- State Key Laboratory of Proteomics; Beijing Proteome Research Center; Beijing Institute of Radiation Medicine; Beijing P. R. China
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Najam-ul-Haq M, Saeed A, Jabeen F, Maya F, Ashiq MN, Sharif A. Newly developed poly(allyl glycidyl ether/divinyl benzene) polymer for phosphopeptides enrichment and desalting of biofluids. ACS APPLIED MATERIALS & INTERFACES 2014; 6:3536-3545. [PMID: 24533437 DOI: 10.1021/am405718j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The polymeric materials have contributed significantly in the area of bioanalytical science. The functionalization of polymeric backbone after its development brings unique selectivity towards the target biomolecules. In present work, the functionalities of choice have been introduced through the ring-opening of allyl glycidyl ether. The utility of polymer is widened through derivatizations to immobilized metal ion affinity chromatographic (IMAC) material for the phosphopeptides enrichment and Reversed Phase (C-18) for the desalting prior to MALDI-MS analysis. The polymer-IMAC in addition to Fe(3+) is also immobilized with lanthanide ions like La(3+), Eu(3+), and Er(3+). The amount of Fe(3+) immobilized is determined as 0.7928 mg/g. Spherical morphology with narrow particle size dispersion is revealed by scanning electron microscopy (SEM). The surface area, pore volume and size distribution is determined by nitrogen adsorption porosimetery. The elemental composition and purity level is confirmed by energy dispersive X-ray spectroscopy (EDX) data. The derivatization to IMAC and RP is evaluated by Fourier transform infrared (FT-IR) spectroscopy. The polymer enables the efficient phosphopeptide enrichment to equal degree from casein variants, non-fat milk, egg yolk, human serum, and HeLa cell extract. The identification of phosphorylation sites can lead to the phosphorylation pathways to understand the post-translational modifications. The identification with their sequence coverage is made using Mascot and Phosphosite Plus. It is sensitive to enrich the phosphopeptides down to 2 femtomoles with very high selectivity of 1:2000 with BSA background. These attributes are linked to the higher surface area (173.1554 m(2)/g) of the designed polymer. The non-specific bindings, particularly the Fe(3+) linked acidic residues are also avoided. Four characteristic phosphopeptides (fibrinopeptide A and their hydrolytic products) from fibrinogen α-chain are identified from the human serum after the enrichment, which have link to the hepatocellular carcinoma (HCC). The proportions of fibrinogen and their phosphorylation products enriched by poly(AGE/DVB)-IMAC open new horizons in the biomarker discovery.
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Affiliation(s)
- Muhammad Najam-ul-Haq
- Institute of Chemical Sciences, Bahauddin Zakariya University , Multan 60800, Pakistan
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29
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Chen CJ, Lai CC, Tseng MC, Liu YC, Liu YH, Chiou LW, Tsai FJ. A novel titanium dioxide-polydimethylsiloxane plate for phosphopeptide enrichment and mass spectrometry analysis. Anal Chim Acta 2014; 812:105-13. [DOI: 10.1016/j.aca.2014.01.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 12/25/2013] [Accepted: 01/06/2014] [Indexed: 01/01/2023]
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30
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Liang Y, He X, Chen L, Zhang Y. Facile preparation of graphene/Fe3O4/TiO2 multifunctional composite for highly selective and sensitive enrichment of phosphopeptides. RSC Adv 2014. [DOI: 10.1039/c4ra01573h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A novel multifunctional graphene/Fe3O4/TiO2 magnetic composite with excellent hydrophilicity and biological compatibility was synthesized and exhibited selective capture, fast magnetic isolation and sensitive analysis of low-abundance phosphopeptides from complex biosamples.
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Affiliation(s)
- Yulu Liang
- State Key Laboratory of Medical Chemical Biology
- Research Center for Analytical Science
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Xiwen He
- State Key Laboratory of Medical Chemical Biology
- Research Center for Analytical Science
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Langxing Chen
- State Key Laboratory of Medical Chemical Biology
- Research Center for Analytical Science
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Yukui Zhang
- State Key Laboratory of Medical Chemical Biology
- Research Center for Analytical Science
- College of Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
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31
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Li B, Shi X, Gu W, Zhao K, Chen N, Xian Y. Graphene based electrochemical biosensor for label-free measurement of the activity and inhibition of protein tyrosine kinase. Analyst 2013; 138:7212-7. [DOI: 10.1039/c3an01483e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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