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Cerrato A, Cavaliere C, Montone CM, Piovesana S. New hydrophilic material based on hydrogel polymer for the selective enrichment of intact glycopeptides from serum protein digests. Anal Chim Acta 2023; 1245:340862. [PMID: 36737137 DOI: 10.1016/j.aca.2023.340862] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/21/2023]
Abstract
The paper describes the preparation and characterization of a new HILIC material for the enrichment of N-linked glycopeptides. The material was prepared using 2-acrylamido-2-methyl-1-propanesulfonic acid as the monomer and ethylene glycol dimethacrylate as the cross-linker. The material was developed by a Box-Behnken experimental design, taking into consideration the amount of monomer-to-crosslinker ratio, the composition, and the amount of porogen mixture. By this approach, the property of the resulting polymer could be fine-tuned to modulate the hydrophilicity and porosity. As HILIC enrichment is mostly dependent on hydrophilic interactions, including H-bonding, the amount of swelling was expected to have an important function, therefore the optimization considered a monomer percent in the range of 20-80%, which implied very different water swelling capacities. After assessing the potential of this new polymer family on fetuin digests, the 17 materials resulting from the Box-Behnken experimental design were used for the enrichment of glycopeptides from serum protein digests. The materials displayed a superior performance over cotton HILIC enrichment, both in terms of the number of enriched N-linked glycopeptides and selectivity, providing up to 762 N-linked glycopeptides with 77% selectivity. The optimization indicated that a high amount of monomer significantly affected the number of enriched glycopeptides, which is also closely connected with the hydrogel nature of the resulting polymers. The results not only provide one additional HILIC material for the enrichment of glycopeptides but also pave the way for the use and development of hydrogel materials for the enrichment of N-linked glycopeptides.
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Affiliation(s)
- Andrea Cerrato
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Chiara Cavaliere
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Carmela Maria Montone
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy.
| | - Susy Piovesana
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
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Jung HK, Mun M, Ali A, Cheong WJ. Fabrication of permanent silver cement frit at the inlet of micro-columns: a significant progress toward realization of disposable micro-columns. ACTA CHROMATOGR 2020. [DOI: 10.1556/1326.2018.00530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The advent of disposable micro-columns will be a hope of workers of chromatography-related laboratories. A very critical and important requirement is the formation of affordable inlet frits. Welding a metal screen to a column inlet is not recommended because of the risk of damage to stationary phase. In this study, the Tollens probe (silver mirror reaction) was adopted to make affordable frits. Silver is reduced on the particle surface and in an empty space among the particles, forming a solid silver network structure at the column inlet area by injecting the reaction solution into the packed column at a depth of one third (10 cm) of the packed bed (0.5 mm × 300 mm). The silver cement structure was successfully formed, and the silver cement frit endured mobile phase flow well when C18 modified ground silica monolith particles were used to make the packed bed. The formation of the silver cement frit was not successful when the stationary phase based on conventional spherical silica particles was used. Negligible reduction of chromatographic performance by the silver cemented frit was observed. This study serves as the first step toward realization of disposable micro-columns.
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Affiliation(s)
- Hong Kyeong Jung
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
| | - Miri Mun
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
| | - Ashraf Ali
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
| | - Won Jo Cheong
- Department of Chemistry, Inha University, 100 Inharo, Namku, Incheon 22212, South Korea
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Adamopoulou T, Deridder S, Bos TS, Nawada S, Desmet G, Schoenmakers PJ. Optimizing design and employing permeability differences to achieve flow confinement in devices for spatial multidimensional liquid chromatography. J Chromatogr A 2020; 1612:460665. [PMID: 31727357 DOI: 10.1016/j.chroma.2019.460665] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 10/24/2019] [Accepted: 10/29/2019] [Indexed: 11/26/2022]
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Mun M, Cheong WJ. Disposable Microcolumn with a Welded Metal Frit and a Silver Cement Frit. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Miri Mun
- Department of ChemistryInha University Incheon 22212 South Korea
| | - Won Jo Cheong
- Department of ChemistryInha University Incheon 22212 South Korea
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Sandy KE, Condarcure AM, Sutton CT, Baker CA, Gallagher ES, Bright LK, Aspinwall CA. Rapid Formation of Polymer Frits in Fused Silica Capillaries Using Spatially defined Thermal Free-Radical Initiated Polymerization. SEPARATION SCIENCE PLUS 2018; 1:753-758. [PMID: 34316536 DOI: 10.1002/sscp.201800126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Column preparation in capillary chromatography commonly relies upon the generation of on-column porous frits. Here, we report a simple, robust and low-cost approach for preparing polymer frits on-column, in a rapid and spatially controlled manner using thermal free-radical initiated polymerization. In this approach, a simple, temperature-controlled heating apparatus is positioned adjacent to a 100 μm i.d. fused-silica capillary for a defined duration. Frits were synthesized in 3-(trimethoxysilyl)propyl methacrylate modified capillaries using a monomer solution of 2,2-azobisisobutyronitrile, glycidyl methacrylate, ethylene glycol dimethacrylate, and decanol. Frit length and stability were investigated as a function of polymerization time and temperature. Frit length was easily controlled via a combination of polymerization time and temperature and position was readily controlled using a simple mechanical placement jig. Thermal initiated frits were stable throughout column packing and did not require removal of the capillary polyimide coating. The thermal initiation approach offers higher throughput, with polymerization times of < 2 min compared to ≥ 30 min for UV-initiated polymerization and significantly reduces the cost, enabling broader access to on-column frit technology for a variety of capillary separation applications.
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Affiliation(s)
- Kendall E Sandy
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, 85721, AZ
| | | | - Corey T Sutton
- Department of Chemistry, University of Tennessee, Knoxville, 37996, TN
| | | | - Elyssia S Gallagher
- Department of Chemistry and Biochemistry, Baylor University, Waco, 76706, TX
| | - Leonard K Bright
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, 85721, AZ
| | - Craig A Aspinwall
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, 85721, AZ.,Department of Biomedical Engineering, University of Arizona, Tucson, 85721, AZ.,Bio5 Institute, University of Arizona, Tucson, 85721, AZ
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Park SY, Cheong WJ. Polyether ether ketone encased monolith frits made of polyether ether ketone tubing with a 0.25 mm opening resulting in an improved separation performance in liquid chromatography. J Sep Sci 2016; 39:1799-803. [DOI: 10.1002/jssc.201600040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 02/12/2016] [Accepted: 02/14/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Sin Young Park
- Department of Chemistry; Inha University; Namku Incheon South Korea
| | - Won Jo Cheong
- Department of Chemistry; Inha University; Namku Incheon South Korea
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Polystyrene -co-Divinylbenzene PolyHIPE Monoliths in 1.0 mm Column Formats for Liquid Chromatography. MATERIALS 2016; 9:ma9030212. [PMID: 28773337 PMCID: PMC5456711 DOI: 10.3390/ma9030212] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 02/26/2016] [Accepted: 03/15/2016] [Indexed: 11/17/2022]
Abstract
The reversed phase liquid chromatographic (RP-HPLC) separation of small molecules using a polystyrene-co-divinylbenzene (PS-co-DVB) polyHIPE stationary phases housed within 1.0 mm i.d. silcosteel columns is presented within this study. A 90% PS-co-DVB polyHIPE was covalently attached to the walls of the column housing by prior wall modification with 3-(trimethoxysilyl) propyl methacrylate and could withstand operating backpressures in excess of 200 bar at a flow rate of 1.2 mL/min. Permeability studies revealed that the monolith swelled slightly in 100% acetonitrile relative to 100% water but could nevertheless be used to separate five alkylbenzenes using a flow rate of 40 µL/min (linear velocity: 0.57 mm/s). Remarkable column-to-column reproducibility is shown with retention factor variation between 2.6% and 6.1% for two separately prepared columns.
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