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Tao X, Su M, Chen P, Yan M, Wang D, Xia L, Rao L, Xia Z, Fu Q. Zirconium(IV) coordination-mediated rapid and versatile post-modification of polydopamine coating as stationary phase for open-tubular capillary electrochromatography. J Chromatogr A 2024; 1736:465415. [PMID: 39378618 DOI: 10.1016/j.chroma.2024.465415] [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: 08/23/2024] [Revised: 09/30/2024] [Accepted: 10/02/2024] [Indexed: 10/10/2024]
Abstract
In recent years, mussel-inspired polydopamine (PDA)-based materials have attracted significant attention in the field of open-tubular capillary electrochromatography (OT-CEC) owing to their diverse and appealing properties. However, previously established functionalized PDA coating-based CEC stationary phases predominantly relied on the latent reactivity of PDA with amine/thiol-containing molecules, limiting the types of applicable modifiers and requiring time-consuming reaction processes. Herein, we presented a versatile and efficient method for the facile and rapid fabrication of diverse functionalized PDA coatings as OT-CEC stationary phases through a Zr(IV) coordination-mediated post-modification strategy. Different kinds of modifiers, including octadecylamine (ODA), lauric acid (LA), and perfluorooctanoic acid (PFOA), were rapidly and robustly grafted onto the PDA coating, verified through multiple characterization techniques. The influences of preparation parameters on the grafting efficiency of the functionalized PDA coating were systematically investigated. Utilizing the Zr(IV)-mediated ODA-, LA- and PFOA-functionalized PDA-based OT-CEC columns, we achieved high-efficiency baseline separation of a series of neutral analytes with excellent repeatability, good stability, and long lifetime. Given the strong universality of the Zr(IV) coordination-mediated post-modification approach, our study provides an effective pathway for advancing the development of a wider range of functional PDA-based chromatographic stationary phases.
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Affiliation(s)
- Xueping Tao
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Mengting Su
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Panpan Chen
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Meiting Yan
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Dan Wang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Lan Xia
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Li Rao
- Chongqing Key Laboratory of High Active Traditional Chinese Drug Delivery System, Chongqing Medical and Pharmaceutical College, Chongqing, 401331, China.
| | - Zhining Xia
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China.
| | - Qifeng Fu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China.
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2
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Wang A, Qi Z, Tian M, Huang J, Yang J, Yang L. In-line RNA-based microreactor direct mass spectrometry for ultrasensitive and rapid assay of terminal deoxynucleotidyl transferase activity. Talanta 2024; 279:126631. [PMID: 39094533 DOI: 10.1016/j.talanta.2024.126631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 07/23/2024] [Accepted: 07/27/2024] [Indexed: 08/04/2024]
Abstract
Terminal deoxynucleotidyl transferase (TdT), a unique template-independent DNA polymerase, plays a crucial role in the human adaptive immune system and is considered a promising biomarker for the diagnosis of various forms of acute or chronic leukemia. The accurate and sensitive detection of trace TdT is of pivotal importance to fulfill the significant medical interest in understanding its pathological functions and diagnosing TdT-related diseases. We hereby present an in-line RNA-based microreactor direct mass spectrometry (MS) method and its application for ultrasensitive, accurate, and rapid analysis of trace TdT activity in leukemic cell samples. A specially designed RNA-based microreactor is fabricated by immobilizing short RNA sequence via covalent Au-S bond on the inner surface of a capillary pre-modified with three-dimensional porous layer (PL) and Au nanoparticles (AuNPs). Utilizing this PL@Au@RNA microreactor, the signal of target TdT is conversed into reporter molecules (adenine), which exhibit a strong MS response. This conversion process enables efficient signal amplification and enhances detection sensitivity. The outlet end of the PL@Au@RNA microreactor is deliberately crafted into a porous tip, serving as an electrospray ionization (ESI) interface to directly couple to ESI-MS in-line. This design facilitates the direct transmission of the generated signaling molecules into the MS system, eliminating the need for laborious sample treatment procedures. By implementing this RNA-based microreactor in direct MS analysis, we have achieved remarkable sensitivity in detecting TdT activity with the limit-of-detection of 4 × 10-9 U, surpassing other reported methods in literature by three to four orders of magnitude. Furthermore, each assay requires a minimal sample volume of merely 10 nL. This method has successfully demonstrated its application in accurately and efficiently detecting TdT activity in leukemia cells, and its detection results are consistent with those obtained by ELISA kits.
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Affiliation(s)
- Anping Wang
- Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China
| | - Zihe Qi
- Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China
| | - Miaomiao Tian
- Institute of Chemical and Industrial Bioengineering, Jilin Engineering Normal University, Changchun, Jilin Province, 130052, China
| | - Jing Huang
- Laboratory Department of the First Hospital of Jilin University, Changchun, Jilin Province, 130024, China
| | - Jinlan Yang
- Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China
| | - Li Yang
- Department of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin Province, 130024, China.
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3
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Ning W, Xiang Y, Zhang L, Ye N. Hydrogen-bonded organic frameworks as stationary phase for open-tubular capillary electrochromatography. Anal Chim Acta 2024; 1326:343148. [PMID: 39260915 DOI: 10.1016/j.aca.2024.343148] [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: 07/07/2024] [Revised: 08/17/2024] [Accepted: 08/21/2024] [Indexed: 09/13/2024]
Abstract
BACKGROUND Capillary electrochromatography (CEC) stationary phases have always been the focus of attention. The selection of excellent stationary phases are the key to realize separate of different compounds. Hydrogen-bonded organic frameworks (HOFs) are porous materials connected by hydrogen bonds between molecules, which have the advantages of renewable, high specific surface area and mild synthesis conditions. At present, HOFs are used in gas adsorption and storage, catalysis and drug delivery. Because of its unique advantages, HOFs have a bright future as CEC stationary phases. RESULTS Using melamine (MA) and 1,3,6,8-tetra (4-carboxylphenyl)pyrene (H4TBAPy) as reaction monomers, a HOFs named MA/PFC-1 was synthesized by solvent evaporation at room temperature. The inner wall of the capillary column was coated with MA/PFC-1 by chemical bonding. Sulfonamides were used as the target analytes. The effects of pH, phosphate buffer solution concentration, organic additive content and applied voltage on sulfonamides separation were investigated. The MA/PFC-1-coated capillary column had good resolution (>1.5) and reproducibility. The intra-day, inter-day, column-to-column, and inter-batch precision of the retention times were 0.03%-0.09%, 0.04%-0.09%, 0.03%-0.14% and 0.06%-0.09%, respectively. The intra-day, inter-day, column-to-column, and inter-batch precision of the peak areas were 0.11%-0.25%, 0.13%-0.20%, 0.12%-0.15% and 0.08%-0.15%, respectively. The MA/PFC-1-coated capillary column was run 150 consecutive times, and the results showed no noticeable change, which proved that this method had good stability. SIGNIFICANCE This work applied HOFs to CEC. The results show the that MA/PFC-1-coated capillary column has good separation performance. The MA/PFC-1-coated capillary column has been successfully applied to the determination of sulfamethoxazole in tablets, which has practical application value. To open up the application of HOFs in CEC and provide a new idea for developing new CEC stationary phases.
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Affiliation(s)
- Weijie Ning
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China
| | - Lu Zhang
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
| | - Nengsheng Ye
- Department of Chemistry, Capital Normal University, Beijing, 100048, China.
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Hong T, Zhou Q, Liu Y, Ji Y, Tan S, Zhou W, Cai Z. Preparation of DNA nanoflower-modified capillary silica monoliths for chiral separation. Mikrochim Acta 2024; 191:584. [PMID: 39245760 DOI: 10.1007/s00604-024-06663-z] [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: 05/30/2024] [Accepted: 08/21/2024] [Indexed: 09/10/2024]
Abstract
Innovative chiral capillary silica monoliths (CSMs) were developed based on DNA nanoflowers (DNFs). Baseline separation of enantiomers such as atenolol, tyrosine, histidine, and nefopam was achieved by using DNF-modified CSMs, and the obtained resolution value was higher than 1.78. To further explore the effect of DNFs on enantioseparation, different types of chiral columns including DNA strand containing the complementary sequence of the template (DCT)-modified CSMs, DNF2-modified CSMs, and DNF3-modified CSMs were prepared as well. It was observed that DNF-modified CSMs displayed better chiral separation ability compared with DCT-based columns. The intra-day and inter-day repeatability of model analytes' retention time and resolution kept desirable relative standard deviation values of less than 8.28%. DNF2/DNF3-modified CSMs were able to achieve baseline separation of atenolol, propranolol, 2'-deoxyadenosine, and nefopam enantiomers. Molecular docking simulations were performed to investigate enantioselectivity mechanisms of DNA sequences for enantiomers. To indicate the successful construction of DNFs and DNF-modified CSMs, various charaterization approaches including scanning electron microscopy, agarose gel electrophoresis, dynamic light scattering analysis, electroosmotic flow, and Fourier-transform infrared spectroscopy were utilized. Moreover, the enantioseparation performance of DNF-modified CSMs was characterized in terms of sample volume, applied voltage, and buffer concentration. This work paves the way to applying DNF-based capillary electrochromatography microsystems for chiral separation.
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Affiliation(s)
- Tingting Hong
- School of Pharmacy, Changzhou University, Changzhou, 213164, Jiangsu, China.
| | - Qi Zhou
- School of Pharmacy, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Yilian Liu
- School of Pharmacy, Changzhou University, Changzhou, 213164, Jiangsu, China
| | - Yibing Ji
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing, 210009, Jiangsu, China.
| | - Songwen Tan
- Monash Suzhou Research Institute, Monash University, Suzhou, SIP 215000, China
- Jiangsu Dawning Pharmaceutical Co., Ltd, Changzhou, 213100, Jiangsu, China
| | - Wenhu Zhou
- Xiangya School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, 410013, Hunan, China
- Academician Workstation, Changsha Medical University, Changsha, 410219, China
| | - Zhiqiang Cai
- School of Pharmacy, Changzhou University, Changzhou, 213164, Jiangsu, China.
- Jiangsu Dawning Pharmaceutical Co., Ltd, Changzhou, 213100, Jiangsu, China.
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Vallamkonda B, Sethi S, Satti P, Das DK, Yadav S, Vashistha VK. Enantiomeric Analysis of Chiral Drugs Using Mass Spectrometric Methods: A Comprehensive Review. Chirality 2024; 36:e23705. [PMID: 39105272 DOI: 10.1002/chir.23705] [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: 06/01/2024] [Revised: 07/03/2024] [Accepted: 07/09/2024] [Indexed: 08/07/2024]
Abstract
Chirality plays a crucial role in the drug development process, influencing fundamental chemical and biochemical processes and significantly affecting our daily lives. This review provides a comprehensive examination of mass spectrometric (MS) methods for the enantiomeric analysis of chiral drugs. It thoroughly investigates MS-hyphenated techniques, emphasizing their critical role in achieving enantioselective analysis. Furthermore, it delves into the intricate chiral recognition mechanisms inherent in MS, elucidating the fundamental principles that govern successful chiral separations. By critically assessing the obstacles and potential benefits associated with each MS-based method, this review offers valuable insights for researchers navigating the complexities of chiral analysis. Both qualitative and quantitative approaches are explored, presenting a comparative analysis of their strengths and limitations. This review is aimed at significantly enhancing the understanding of chiral MS methods, serving as a crucial resource for researchers and practitioners engaged in enantioselective studies.
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Affiliation(s)
- Bhaskar Vallamkonda
- Department of Pharmaceutical Science, VIGNAN'S Foundation for Science, Technology & Research, Guntur, Andhra Pradesh, India
| | - Sonika Sethi
- Department of Chemistry, GD Goenka University, Gurugram, Haryana, India
| | - PhanikumarReddy Satti
- Department of Chemistry, Acharya Nagarjuna University, Guntur, Andhra Pradesh, India
| | | | - Suman Yadav
- Department of Chemistry, Swami Shraddhanand College, University of Delhi, Delhi, India
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Li Y, Miao S, Tan J, Zhang Q, Chen DDY. Capillary Electrophoresis: A Three-Year Literature Review. Anal Chem 2024; 96:7799-7816. [PMID: 38598751 DOI: 10.1021/acs.analchem.4c00857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Affiliation(s)
- Yueyang Li
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Siyu Miao
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Jiahua Tan
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Qi Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China
| | - David Da Yong Chen
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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7
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Hong T, Zhou W, Tan S, Cai Z. A cooperation tale of biomolecules and nanomaterials in nanoscale chiral sensing and separation. NANOSCALE HORIZONS 2023; 8:1485-1508. [PMID: 37656443 DOI: 10.1039/d3nh00133d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The cooperative relationship between biomolecules and nanomaterials makes up a beautiful tale about nanoscale chiral sensing and separation. Biomolecules are considered a fabulous chirality 'donor' to develop chiral sensors and separation systems. Nature has endowed biomolecules with mysterious chirality. Various nanomaterials with specific physicochemical attributes can realize the transmission and amplification of this chirality. We focus on highlighting the advantages of combining biomolecules and nanomaterials in nanoscale chirality. To enhance the sensors' detection sensitivity, novel cooperation approaches between nanomaterials and biomolecules have attracted tremendous attention. Moreover, innovative biomolecule-based nanocomposites possess great importance in developing chiral separation systems with improved assay performance. This review describes the formation of a network based on nanomaterials and biomolecules mainly including DNA, proteins, peptides, amino acids, and polysaccharides. We hope this tale will record the perpetual relation between biomolecules and nanomaterials in nanoscale chirality.
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Affiliation(s)
- Tingting Hong
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China.
| | - Wenhu Zhou
- Xiangya School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan 410013, China
- Academician Workstation, Changsha Medical University, Changsha 410219, China
| | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan 410013, China
- Jiangsu Dawning Pharmaceutical Co., Ltd, Changzhou, Jiangsu 213100, China
| | - Zhiqiang Cai
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China.
- Jiangsu Dawning Pharmaceutical Co., Ltd, Changzhou, Jiangsu 213100, China
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8
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Du J, Xie F, Liu C, Ji B, Wei W, Wang M, Xia Z. Chiral zinc oxide functionalized quartz crystal microbalance sensor for enantioselective recognition of amino acids. Talanta 2023; 259:124496. [PMID: 37031543 DOI: 10.1016/j.talanta.2023.124496] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 04/11/2023]
Abstract
Chiral transition metal oxides with tunable structures and multiple physicochemical features have been increasingly applied for chiral sensing and detection. In this work, chiral zinc oxide (ZnO) was first applied as selector to construct quartz crystal microbalance (QCM) sensor for enantioselective recognition of amino acids. The chiral ZnO was prepared by a methionine-induced self-assembly strategy and its high topological chirality was confirmed by several techniques such as circular dichroism spectrum. The chiral discrimination factors were calculated by frequency shifts in response to aspartic acid, phenylalanine, lysine and arginine on L-ZnO surface, achieving 1.89 ± 0.04, 1.76 ± 0.11, 1.66 ± 0.07 and 1.54 ± 0.09, respectively. Notably, L-enantiomers preferred stronger absorptions on L-ZnO surface as compared to D-forms. It was further found that this sensor was appropriate for quantitative analysis and enantiomer excess analysis and adsorption kinetics study. Furthermore, molecular docking revealed the recognition mechanism, where chiral distinction was caused by the different steric interactions between enantiomers and chiral ZnO. This method enjoyed merits of high enantioselectivity, simple preparation and low cost, offering newly chiral sensing method for other molecules.
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Affiliation(s)
- Jiayin Du
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Fengfeng Xie
- Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Chunlan Liu
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Baian Ji
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Weili Wei
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China
| | - Min Wang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China.
| | - Zhining Xia
- School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, China.
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Zheng X, Zhang Q, Ma Q, Li X, Zhao L, Sun X. A chiral metal-organic framework {(HQA)(ZnCl 2)(2.5H 2O)} n for the enantioseparation of chiral amino acids and drugs. J Pharm Anal 2023; 13:421-429. [PMID: 37181296 PMCID: PMC10173174 DOI: 10.1016/j.jpha.2023.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/03/2023] [Accepted: 03/10/2023] [Indexed: 03/28/2023] Open
Abstract
Chiral metal-organic frameworks (CMOFs) with enantiomeric subunits have been employed in chiral chemistry. In this study, a CMOF formed from 6-methoxyl-(8S,9R)-cinchonan-9-ol-3-carboxylic acid (HQA) and ZnCl2, {(HQA)(ZnCl2)(2.5H2O)}n, was constructed as a chiral stationary phase (CSP) via an in situ fabrication approach and used for chiral amino acid and drug analyses for the first time. The {(HQA)(ZnCl2)(2.5H2O)}n nanocrystal and the corresponding chiral stationary phase were systematically characterised using a series of analytical techniques including scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, circular dichroism, X-ray photoelectron spectroscopy, thermogravimetric analysis, and Brunauer-Emmett-Teller surface area measurements. In open-tubular capillary electrochromatography (CEC), the novel chiral column exhibited strong and broad enantioselectivity toward a variety of chiral analytes, including 19 racemic dansyl amino acids and several model chiral drugs (both acidic and basic). The chiral CEC conditions were optimised, and the enantioseparation mechanisms are discussed. This study not only introduces a new high-efficiency member of the MOF-type CSP family but also demonstrates the potential of improving the enantioselectivities of traditional chiral recognition reagents by fully using the inherent characteristics of porous organic frameworks.
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Affiliation(s)
- Xiangtai Zheng
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai, 200444, China
- Department of Pharmacy, Shanghai Baoshan Luodian Hospital, Shanghai, 201908, China
| | - Qi Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Qianjie Ma
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai, 200444, China
| | - Xinyu Li
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai, 200444, China
| | - Liang Zhao
- Department of Pharmacy, Shanghai Baoshan Luodian Hospital, Shanghai, 201908, China
- Luodian Clinical Drug Research Center, Institute for Translational Medicine Research, Shanghai University, Shanghai, 200444, China
| | - Xiaodong Sun
- Shanghai Engineering Research Center of Organ Repair, School of Medicine, Shanghai University, Shanghai, 200444, China
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10
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Recent applications and chiral separation developments based on stationary phases in open tubular capillary electrochromatography (2019–2022). J Pharm Anal 2023; 13:323-339. [PMID: 37181297 PMCID: PMC10173184 DOI: 10.1016/j.jpha.2023.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 01/16/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023] Open
Abstract
Capillary electrochromatography (CEC) plays a significant role in chiral separation via the double separation principle, partition coefficient difference between the two phases, and electroosmotic flow-driven separation. Given the distinct properties of the inner wall stationary phase (SP), the separation ability of each SP differs from one another. Particularly, it provides large room for promising applications of open tubular capillary electrochromatography (OT-CEC). We divided the OT-CEC SPs developed over the past four years into six types: ionic liquids, nanoparticle materials, microporous materials, biomaterials, non-nanopolymers, and others, to mainly introduce their characteristics in chiral drug separation. There also added a few classic SPs that occurred within ten years as supplements to enrich the features of each SP. Additionally, we discuss their applications in metabolomics, food, cosmetics, environment, and biology as analytes in addition to chiral drugs. OT-CEC plays an increasingly significant role in chiral separation and may promote the development of capillary electrophoresis (CE) combined with other instruments in recent years, such as CE with mass spectrometry (CE/MS) and CE with ultraviolet light detector (CE/UV).
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11
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Wang A, Liu J, Yang J, Yang L. Aptamer affinity-based microextraction in-line coupled to capillary electrophoresis mass spectrometry using a porous layer/nanoparticle -modified open tubular column. Anal Chim Acta 2023; 1239:340750. [PMID: 36628776 DOI: 10.1016/j.aca.2022.340750] [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: 10/15/2022] [Revised: 12/20/2022] [Accepted: 12/23/2022] [Indexed: 12/26/2022]
Abstract
An aptamer affinity based microextraction column is developed to be directly in-line coupled to capillary electrophoresis-mass spectrometry (CE-MS) for analyzing mycotoxins in food samples. Single-stranded DNA aptamers for selective recognition of aflatoxin B1 (AFB1) and ochratoxin A (OTA) targets are co-immobilized via covalent bonds on the surface of the inlet end of a capillary, which is pre-modified with three-dimensional porous layer and gold nanoparticles to enhance the specific surface area and loading capacity. The outlet of the capillary is designed as a porous tip to serve as the spray source for injection to the mass spectrometry. All the necessary processes for pretreatment and analysis of a sample are accomplished in one injection, including aptamer affinity-based microextraction, CE separation and MS detection of analytes. AFB1 and OTA are simultaneously determined in a wide linear range with sample consumption of only 1 μL and the limit-of-detection as low as 1 pg/mL. The microextraction column exhibits excellent repeatability and stability, which can be used over 45 runs within a month with CE separation efficiency and only MS intensity slightly decreased. Mycotoxins in three kinds of cereal based infant foods are accurately analyzed using the proposed method. The study provides a robust and universal approach that would have potential applications in a variety of analytical fields based on selective molecular recognition coupling to CE-MS analysis.
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Affiliation(s)
- Anping Wang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Jianing Liu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Jinlan Yang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Li Yang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun, 130024, China.
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12
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Affiliation(s)
- Hai-Long Qian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shu-Ting Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Xiu-Ping Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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13
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Recent advances in the hyphenation of electromigration techniques with mass spectrometry. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Eid SM, Farag MA, Bawazeer S. Underivatized Amino Acid Chromatographic Separation: Optimized Conditions for HPLC-UV Simultaneous Quantification of Isoleucine, Leucine, Lysine, Threonine, Histidine, Valine, Methionine, Phenylalanine, Tryptophan, and Tyrosine in Dietary Supplements. ACS OMEGA 2022; 7:31106-31114. [PMID: 36092579 PMCID: PMC9453785 DOI: 10.1021/acsomega.2c03228] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/29/2022] [Indexed: 05/04/2023]
Abstract
Amino acids (AAs) are considered as the building blocks of life. Unlike nonessential AAs, the human body cannot synthesize essential AAs and should be supplied in food or dietary supplements. The aim of the work is simultaneous HPLC-UV determination of 10 structurally related AAs without pre- or postderivatization in powdered dietary supplements (PDSs). This was challenging, especially because PDS has no standardized procedures for its quality control. HPLC-UV chromatograms of the 10 AAs were recorded using a gradient elution of the mobile phase on a CLC-C18 column at 225 nm. The elution started with 100% of phosphate buffer (pH 7.4, 10 mM) for 10 min; then, the concentration of acetonitrile increased linearly to reach 50% for another 15 min at room temperature. Good separation was achieved within a 25 min run time without pre- or postderivatization. The method was carefully validated according to the ICH guidelines over the linearity range of 100-200, 50-200, 20-150, 50-400, 20-250, 75-175, 50-250, 50-250, 50-300, and 5-100 μg/mL for l-lysine, l-threonine, l-histidine, l-valine, l-methionine, l-isoleucine, l-leucine, l-tyrosine, l-phenylalanine, and l-tryptophan, respectively, with mean recoveries ranges between 98.91 and 100.77. The method was found to be precise, and the relative standard deviation (RSD) was found to be between 0.28 and 1.92 with recoveries between 97.91 and 101.11. The method was found to be robust that resists deliberate changes in pH, flow rate, and mobile-phase percentages. It was successfully applied for the analysis of PDSs. The proposed method could be very useful for the quality control of the 10 structurally related AAs during their synthesis and for testing raw materials and pharmaceutical preparations.
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Affiliation(s)
- Sherif M. Eid
- Analytical
Chemistry Department, Faculty of Pharmacy, October 6 University, 6 October
City 12511, Giza, Egypt
- ,
| | - Mohamed A. Farag
- Pharmacognosy
Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Sami Bawazeer
- Department
of Pharmacognosy, Umm Al-Qura University,
Faculty of Pharmacy, Makkah 21421, Saudi Arabia
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