1
|
Wysor SK, Marcus RK. Quantitative Recoveries of Exosomes and Monoclonal Antibodies from Chinese Hamster Ovary Cell Cultures by Use of a Single, Integrated Two-Dimensional Liquid Chromatography Method. Anal Chem 2023; 95:17886-17893. [PMID: 37995145 PMCID: PMC11095952 DOI: 10.1021/acs.analchem.3c04044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Cultured cell lines are very commonly used for the mass production of therapeutic proteins, such as monoclonal antibodies (mAbs). In particular, Chinese hamster ovary (CHO) cell lines are widely employed due to their high tolerance to variations in experimental conditions and their ability to grow in suspension or serum free media. CHO cell lines are known for their ability to produce high titers of biotherapeutic products such as immunoglobulin G (IgG). An emergent alternative means of treating diseases, such as cancer, is the use of gene therapies, wherein genetic cargo is "packaged" in nanosized vesicular structures, referred to as "vectors". One particularly attractive vector option is extracellular vesicles (EVs), of which exosomes are of greatest interest. While exosomes can be harvested from virtually any human body fluid, bovine milk, or even plants, their production in cell cultures is an attractive commercial approach. In fact, the same CHO cell types employed for mAb production also produce exosomes as a natural byproduct. Here, we describe a single integrated 2D liquid chromatography (2DLC) method for the quantitative recovery of both exosomes and antibodies from a singular sample aliquot. At the heart of the method is the use of polyester capillary-channeled polymer (C-CP) fibers as the first dimension column, wherein exosomes/EVs are captured from the supernatant sample and subsequently determined by multiangle light scattering (MALS), while the mAbs are captured, eluted, and quantified using a protein A-modified C-CP fiber column in the second dimension, all in a 10 min workflow. These efforts demonstrate the versatility of the C-CP fiber phases with the capacity to harvest both forms of therapeutics from a single bioreactor, suggesting an appreciable potential impact in the field of biotherapeutics production.
Collapse
Affiliation(s)
- Sarah K Wysor
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - R Kenneth Marcus
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, South Carolina 29634-0973, United States
| |
Collapse
|
2
|
Islam MKB, Kenneth Marcus R. Loading characteristics of streptavidin on polypropylene capillary channeled polymer fibers and capture performance towards biotinylated proteins. Anal Bioanal Chem 2023; 415:6711-6721. [PMID: 37740120 DOI: 10.1007/s00216-023-04948-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 08/30/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
The development of higher-throughput, potentially lower-cost means to isolate proteins, for a variety of end uses, is of continuing emphasis. Polypropylene (PP) capillary-channeled polymer (C-CP) fiber columns are modified with the biotin-binding protein streptavidin (SAV) to capture biotinylated proteins. The loading characteristics of SAV on fiber supports were determined using breakthrough curves and frontal analysis. Based on adsorption data, a 3-min on-column loading at a flow rate of 0.5 mL min-1 (295.2 cm h-1) with a SAV feed concentration of 0.5 mg mL-1 produces a SAV loading capacity of 1.4 mg g-1 fiber. SAV has an incredibly high affinity for the small-molecule biotin (10-14 M), such that this binding relationship can be exploited by labeling a target protein with biotin via an Avi-tag. To evaluate the capture of the biotinylated proteins on the modified PP surface, the biotinylated versions of bovine serum albumin (b-BSA) and green fluorescent protein (b-GFP) were utilized as probe species. The loading buffer composition and flow rate were optimized towards protein capture. The non-ionic detergent Tween-20 was added to the deposition solutions to minimize non-specific binding. Values of 0.25-0.50% (v/v) Tween-20 in PBS exhibited better capture efficiency, while minimizing the non-specific binding for b-BSA and b-GFP, respectively. The C-CP fiber platform has the potential to provide a fast and low-cost method to capture targeted proteins for applications including protein purification or pull-down assays.
Collapse
Affiliation(s)
- Md Khalid Bin Islam
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, SC, 29634-0973, USA
| | - R Kenneth Marcus
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, SC, 29634-0973, USA.
| |
Collapse
|
3
|
Wysor SK, Marcus RK. Two-dimensional separation of water-soluble polymers using size exclusion and reversed phase chromatography employing capillary-channeled polymer fiber columns. J Chromatogr A 2023; 1701:464051. [PMID: 37209520 DOI: 10.1016/j.chroma.2023.464051] [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: 03/14/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 05/22/2023]
Abstract
Polymeric materials are readily available, durable materials that have piqued the interest of many diverse fields, ranging from biomedical engineering to construction. The physiochemical properties of a polymer dictate the behavior and function, where large polydispersity among polymer properties can lead to problems; however, current polymer analysis methods often only report results for one particular property. Two-dimensional liquid chromatography (2DLC) applications have become increasingly popular due to the ability to implement two chromatographic modalities in one platform, meaning the ability to simultaneously address multiple physiochemical aspects of a polymer sample, such as functional group content and molar mass. The work presented employs size exclusion chromatography (SEC) and reversed-phase (RP) chromatography, through two coupling strategies: SEC x RP and RP x RP separations of the water-soluble polymers poly(methacrylic acid) (PMA) and polystyrene sulfonic acid (PSSA). Capillary-channeled polymer (C-CP) fiber (polyester and polypropylene) stationary phases were used for the RP separations. Particularly attractive is the fact that they are easily implemented as the second dimension in 2DLC workflows due to their low backpressure (<1000 psi at ∼70 mm sec-1) and fast separation times. In-line multi-angle light scattering (MALS) was also implemented for molecular weight determinations of the polymer samples, with the molecular weight of PMA ranging from 5 × 104 to 2 × 105 g mol-1, while PSSA ranges from 105 to 108 g mol-1. While the orthogonal pairing of SEC x RP addresses polymer sizing and chemistry, this approach is limited by long separation times (80 min), the need for high solute concentrations (PMA = 1.79 mg mL-1 and PSSA = 0.175 mg mL-1 to yield comparable absorbance responses) due to on-column dilution and subsequently limited resolution in the RP separation space. With RP x RP couplings, separation times were significantly reduced (40 min), with lower sample concentrations (0.595 mg mL-1 of PMA and 0.05 mg mL-1 of PSSA) required. The combined RP strategy provided better overall distinction in the chemical distribution of the polymers, yielding 7 distict species versus 3 for the SEC x RP coupling.
Collapse
Affiliation(s)
- Sarah K Wysor
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, SC 29634-0973, USA
| | - R Kenneth Marcus
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, SC 29634-0973, USA.
| |
Collapse
|
4
|
Popov AS, Maksimov GS, Shpigun OA, Chernobrovkina AV. Adsorbents with a Covalently Bonded Polymer Layer for Hydrophilic Interaction Liquid Chromatography. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822090106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
5
|
Huang S, McClain RT, Marcus RK. Comparison of the separation of proteins of wide-ranging molecular weight via trilobal polypropylene capillary-channeled polymer fiber, commercial superficiously porous, and commercial size exclusion columns. J Sep Sci 2022; 45:1502-1513. [PMID: 35172038 DOI: 10.1002/jssc.202100891] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/08/2022] [Accepted: 02/12/2022] [Indexed: 11/06/2022]
Abstract
Reversed phase and size-exclusion chromatography methods are commonly used for protein separations, though based on distinctly different principles. Reversed phase methods yield hydrophobicity-based (loosely-termed) separation of proteins on porous supports, but tend to be limited to proteins with modest molecular weights based on mass transfer limitations. Alternatively, size-exclusion provides complementary benefits in the separation of higher-mass proteins based on entropic, not enthalpic, processes, but tend to yield limited peak capacities. In this study, microbore columns packed with a novel trilobal polypropylene capillary-channeled polymer fiber were used in a reversed phase modality for the separation of polypeptides and proteins of molecular weights ranging from 1.4 to 660 kDa. Chromatographic parameters including gradient times, flow rates and trifluoroacetic acid concentrations in the mobile phase were optimized to maximize resolution and throughput. Following optimization, the performance of the trilobal fiber column was compared to two commercial-sourced columns, a superficially porous C4-derivatized silica and size exclusion, both of which are sold specifically for protein separations and operated according to the manufacturer-specified conditions. In comparison to the commercial columns, the fiber-based column yielded better separation performance across the entirety of the suite, at much lower cost and shorter separation times. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Sisi Huang
- Department of Chemistry, Biosystems Research Complex, Clemson University, 29634, Clemson, SC
| | - Ray T McClain
- Vaccine Analytical Research & Development, Merck & Co. Inc., West Point, PA, 19486, USA
| | - R Kenneth Marcus
- Department of Chemistry, Biosystems Research Complex, Clemson University, 29634, Clemson, SC
| |
Collapse
|
6
|
Winderl J, Bürkle S, Hubbuch J. High throughput screening of fiber-based adsorbents for material and process development. J Chromatogr A 2021; 1653:462387. [PMID: 34375899 DOI: 10.1016/j.chroma.2021.462387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 10/20/2022]
Abstract
There has been a growing interest in fibers and fiber-based adsorbents as alternative adsorbents for preparative chromatography. While the benefits of fiber-based adsorbents in terms of productivity have been highlighted in several recent studies, microscale tools that enable a fast characterization of these novel adsorbents, and an easy integration into process development workflows, are still lacking. In the present study an automated high-throughput screening (HTS) for fiber-based adsorbents was established on a robotic liquid handling station in 96 well filter plates. Two techniques - punching and weighing - were identified as techniques that enabled accurate and reproducible portioning of short-cut fiber-based adsorbents. The impact of several screening parameters such as phase ratio, shaking frequency, and incubation time were investigated and optimized for different types of fiber-based adsorbents. The data from the developed HTS correlated with data from packed fiber columns, and binding capacities from both scales matched closely. Subsequently, the developed HTS was utilized to optimize the hydrogel architecture of anion exchange (AEX) fiber-based adsorbent prototypes. A novel AEX fiber-based adsorbent was developed that compared favorably with existing resin and membrane adsorbents in terms of productivity and DNA binding capacity. In addition, the developed HTS was also successfully employed in order to identify step elution conditions for the purification of a monoclonal antibody from product- and process-related impurities with a cation exchange (CEX) fiber-based adsorbent. Trends from the HTS were found to be in good agreement with trends from lab scale column runs. The tool developed in this paper will enable a faster and more complete characterization of fiber-based adsorbents, easier tailoring of such adsorbents towards specific process applications, and an easier integration of such materials into processes. In comparison to previous lab scale experiments, material requirements are reduced by a factor of 3-40 and time requirements are reduced by a factor of 2-5.
Collapse
Affiliation(s)
- Johannes Winderl
- Institute of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
| | - Stephan Bürkle
- Institute of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
| | - Jürgen Hubbuch
- Institute of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
| |
Collapse
|
7
|
Jackson KK, Powell RR, Bruce TF, Marcus RK. Solid-phase extraction of exosomes from diverse matrices via a polyester capillary-channeled polymer (C-CP) fiber stationary phase in a spin-down tip format. Anal Bioanal Chem 2020; 412:4713-4724. [PMID: 32468278 PMCID: PMC8825614 DOI: 10.1007/s00216-020-02728-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/12/2020] [Accepted: 05/19/2020] [Indexed: 12/17/2022]
Abstract
Exosomes, a subset of the extracellular vesicle (EV) group of organelles, hold great potential for biomarker detection, therapeutics, disease diagnosis, and personalized medicine applications. The promise and potential of these applications are hindered by the lack of an efficient means of isolation, characterization, and quantitation. Current methods for exosome and EV isolation (including ultracentrifugation, microfiltration, and affinity-based techniques) result in impure recoveries with regard to remnant matrix species (e.g., proteins, genetic material) and are performed on clinically irrelevant time and volume scales. To address these issues, a polyethylene terephthalate (PET) capillary-channeled polymer (C-CP) fiber stationary phase is employed for the solid-phase extraction (SPE) of EVs from various matrices using a micropipette tip-based format. The hydrophobic interaction chromatography (HIC) processing and a spin-down workflow are carried out using a table-top centrifuge. Capture and subsequent elution of intact, biologically active exosomes are verified via electron microscopy and bioassays. The performance of this method was evaluated by capture and elution of exosome standards from buffer solution and three biologically relevant matrices: mock urine, reconstituted non-fat milk, and exosome-depleted fetal bovine serum (FBS). Recoveries were evaluated using UV-Vis absorbance spectrophotometry and ELISA assay. The dynamic binding capacity (50%) for the 1-cm-long (~ 5 μL bed volume) tips was determined using a commercial exosome product, yielding a value of ~ 7 × 1011 particles. The novel C-CP fiber spin-down tip approach holds promise for the isolation of exosomes and other EVs from various matrices with high throughput, low cost, and high efficiency. Graphical abstract.
Collapse
Affiliation(s)
- Kaylan K Jackson
- Department of Chemistry, Clemson University, Clemson, SC, 29634, USA
| | - Rhonda R Powell
- Clemson Light Imaging Facility, Clemson University, Clemson, SC, 29634, USA
| | - Terri F Bruce
- Department of Bioengineering, Clemson University, Clemson, SC, 29634, USA
| | - R Kenneth Marcus
- Department of Chemistry, Clemson University, Clemson, SC, 29634, USA.
| |
Collapse
|
8
|
Huang S, Wang L, Bruce TF, Marcus RK. Evaluation of exosome loading characteristics in their purification via a glycerol-assisted hydrophobic interaction chromatography method on a polyester, capillary-channeled polymer fiber phase. Biotechnol Prog 2020; 36:e2998. [PMID: 32246744 DOI: 10.1002/btpr.2998] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/23/2020] [Accepted: 03/28/2020] [Indexed: 12/19/2022]
Abstract
Exosomes are membrane-secreted vesicles, with sizes ranging from 30 to 150 nm, which play key roles in intercellular communication. There is intense interest in developing methods to isolate and quantify exosomes toward clinical diagnostics, fundamental studies of intercellular processes, and use of exosomes as delivery vehicles for therapeutic agents. Current methods for exosomes isolation and quantification are time consuming and have operational high costs; few combine isolation and quantification into a singular operation unit. This report describes the use of hydrophobic interaction chromatography on a polyester capillary-channeled polymer fiber column, employing a step gradient for exosome elution, including use of glycerol as a solvent modifier. The entire procedure is completed in 8 min, while maintaining the structural integrity and biological activity of the isolated exosomes. Electron microscopy was used to verify the size and structural fidelity of single exosomes. Absorbance response curves for a commercial exosome sample were used for exosome quantification in the chromatographic separations. In order to determine the dynamic loading capacity for exosomes, different volumes of Dictyostelium discoideum cell culture milieu supernatant were loaded at different column lengths (5-30 cm) and loading flow rates (0.2-0.5 ml/min). A loading capacity of 5.4 × 1012 exosomes derived from D. discoideum milieu was obtained on a 0.8 × 300 mm column; yielding recoveries of over 80%. It is believed that this isolation and purification strategy holds many advantages toward the use of exosomes across a wide breadth of medical and biotechnology applications.
Collapse
Affiliation(s)
- Sisi Huang
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, South Carolina, USA
| | - Lei Wang
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, South Carolina, USA
| | - Terri F Bruce
- Department of Bioengineering, Life Sciences Facility, Clemson University, Clemson, South Carolina, USA
| | - R Kenneth Marcus
- Department of Chemistry, Biosystems Research Complex, Clemson University, Clemson, South Carolina, USA
| |
Collapse
|
9
|
Wang L, Trang HK, Desai J, Dunn ZD, Richardson DD, Marcus RK. Fiber-based HIC capture loop for coupling of protein A and size exclusion chromatography in a two-dimensional separation of monoclonal antibodies. Anal Chim Acta 2020; 1098:190-200. [DOI: 10.1016/j.aca.2019.11.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/05/2019] [Accepted: 11/08/2019] [Indexed: 11/28/2022]
|
10
|
Huang S, Wang L, Bruce TF, Marcus RK. Isolation and quantification of human urinary exosomes by hydrophobic interaction chromatography on a polyester capillary-channeled polymer fiber stationary phase. Anal Bioanal Chem 2019; 411:6591-6601. [DOI: 10.1007/s00216-019-02022-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/25/2019] [Accepted: 07/04/2019] [Indexed: 01/03/2023]
|
11
|
Wang L, Marcus RK. Evaluation of protein separations based on hydrophobic interaction chromatography using polyethylene terephthalate capillary-channeled polymer (C-CP) fiber phases. J Chromatogr A 2019; 1585:161-171. [DOI: 10.1016/j.chroma.2018.11.068] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/16/2018] [Accepted: 11/24/2018] [Indexed: 11/28/2022]
|
12
|
Wang L, Marcus RK. Overload Effects in Reversed Phase Protein Separations using Capillary‐Channeled Polymer Fiber Columns. Biotechnol Prog 2018; 34:1221-1233. [DOI: 10.1002/btpr.2688] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/15/2018] [Accepted: 06/19/2018] [Indexed: 01/13/2023]
Affiliation(s)
- Lei Wang
- Department of Chemistry Clemson University 102 Biosystems Research Complex, Clemson South Carolina 29634
| | - R. Kenneth Marcus
- Department of Chemistry Clemson University 102 Biosystems Research Complex, Clemson South Carolina 29634
| |
Collapse
|
13
|
Winderl J, Spies T, Hubbuch J. Packing characteristics of winged shaped polymer fiber supports for preparative chromatography. J Chromatogr A 2018; 1553:67-80. [DOI: 10.1016/j.chroma.2018.04.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/18/2018] [Accepted: 04/06/2018] [Indexed: 02/02/2023]
|
14
|
|
15
|
Zhang H, Wang W, Li M, Lu Z, Liu K, Wang Y, Wang D. Affinity functionalization of PVA-co-PE nanofibrous membrane with Ni(ii)-chelated ligand for bovine hemoglobin adsorption. NEW J CHEM 2018. [DOI: 10.1039/c8nj00064f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ni(ii)-Chelated PVA-co-PE nanofibrous membrane can be prepared easily and this study provides an exploratory research for the large-scale purification of BHb.
Collapse
Affiliation(s)
- Hao Zhang
- School of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430073
- China
| | - Wenwen Wang
- School of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430073
- China
- Hubei Key Laboratory of Advanced Textile Materials & Application
| | - Mufang Li
- School of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430073
- China
- Hubei Key Laboratory of Advanced Textile Materials & Application
| | - Zhentan Lu
- School of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430073
- China
- Hubei Key Laboratory of Advanced Textile Materials & Application
| | - Ke Liu
- School of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430073
- China
- Hubei Key Laboratory of Advanced Textile Materials & Application
| | - Yuedan Wang
- School of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430073
- China
- Hubei Key Laboratory of Advanced Textile Materials & Application
| | - Dong Wang
- School of Materials Science and Engineering
- Wuhan Textile University
- Wuhan 430073
- China
- Hubei Key Laboratory of Advanced Textile Materials & Application
| |
Collapse
|
16
|
Surface initiated supplemental activator and reducing agent atom transfer radical polymerization (SI-SARA-ATRP) of 4-vinylpyridine on poly(ethylene terephthalate). J Colloid Interface Sci 2017; 500:69-78. [DOI: 10.1016/j.jcis.2017.03.115] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 03/30/2017] [Accepted: 03/31/2017] [Indexed: 11/21/2022]
|
17
|
Jiang L, Marcus RK. Microwave-assisted, grafting polymerization preparation of strong cation exchange nylon 6 capillary-channeled polymer fibers and their chromatographic properties. Anal Chim Acta 2017; 977:52-64. [DOI: 10.1016/j.aca.2017.04.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/11/2017] [Accepted: 04/20/2017] [Indexed: 12/25/2022]
|
18
|
Jiang X, Zhang D, Li X, Wang X, Bai L, Liu H, Yan H. Fabrication of a novel hemin-based monolithic column and its application in separation of protein from complex bio-matrix. J Pharm Biomed Anal 2017; 138:14-21. [DOI: 10.1016/j.jpba.2017.01.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 12/27/2016] [Accepted: 01/14/2017] [Indexed: 12/28/2022]
|
19
|
Jiang L, Marcus RK. Microwave-assisted grafting polymerization modification of nylon 6 capillary-channeled polymer fibers for enhanced weak cation exchange protein separations. Anal Chim Acta 2016; 954:129-139. [PMID: 28081807 DOI: 10.1016/j.aca.2016.11.065] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/23/2016] [Accepted: 11/26/2016] [Indexed: 12/21/2022]
Abstract
A weak cation exchange liquid chromatography stationary phase (nylon-COOH) was prepared by grafting polyacrylic acid on to native nylon 6 capillary-channeled polymer (C-CP) fibers via a microwave-assisted radical polymerization. To the best of our knowledge, this is the first study of applying microwave-assisted grafting polymerization to affect nylon material for protein separation. The C-CP fiber surfaces were characterized by attenuated total reflection (ATR) infrared spectroscopy and scanning electron microscope (SEM). The anticipated carbonyl peak at 1722.9 cm-1 was found on the nylon-COOH fibers, but was not found on the native fiber, indicating the presence of the polyacrylic acid on nylon fibers after grafting. The nylon-COOH phase showed a ∼12× increase in lysozyme dynamic binding capacity (∼12 mg mL-1) when compared to the native fiber phase (∼1 mg mL-1). The loading capacity of the nylon-COOH phase is nearly independent of the lysozyme loading concentration (0.05-1 mg mL-1) and the mobile phase linear velocity (7.3-73 mm s-1). The reproducibility of the lysozyme recovery from the nylon-COOH (RSD = 0.3%, n = 10) and the batch-to-batch variability in the functionalization (RSD = 3%, n = 5) were also investigated, revealing very high levels of consistency. Fast baseline separations of myoglobin, α-chymotrypsinogen A, cytochrome c and lysozyme were achieved using the nylon-COOH column. It was found that a 5× increase in the mobile phase linear velocity (7.3-to-36.5 mm s-1) had little effect on the separation resolution. The microwave-assisted grafting polymerization has great potential as a generalized surface modification methodology across the applications of C-CP fibers.
Collapse
Affiliation(s)
- Liuwei Jiang
- Clemson University, Department of Chemistry, Biosystems Research Complex, Clemson, SC 29634, United States
| | - R Kenneth Marcus
- Clemson University, Department of Chemistry, Biosystems Research Complex, Clemson, SC 29634, United States.
| |
Collapse
|
20
|
Fiber-based monolithic columns for liquid chromatography. Anal Bioanal Chem 2016; 408:6871-83. [DOI: 10.1007/s00216-016-9839-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 07/08/2016] [Accepted: 07/27/2016] [Indexed: 12/19/2022]
|
21
|
Preparation and characterization of high capacity, strong cation-exchange fiber based adsorbents. J Chromatogr A 2016; 1447:92-106. [DOI: 10.1016/j.chroma.2016.04.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 11/18/2022]
|
22
|
A hyperbranched polyethylenimine functionalized stationary phase for hydrophilic interaction liquid chromatography. Anal Bioanal Chem 2016; 408:3633-8. [DOI: 10.1007/s00216-016-9446-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 02/16/2016] [Accepted: 02/24/2016] [Indexed: 10/22/2022]
|
23
|
Evaluation of loading characteristics and IgG binding performance of Staphylococcal protein A on polypropylene capillary-channeled polymer fibers. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1015-1016:92-104. [DOI: 10.1016/j.jchromb.2016.02.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 02/11/2016] [Accepted: 02/14/2016] [Indexed: 11/20/2022]
|
24
|
Zhang LX, Jiang L, Willett DR, Kenneth Marcus R. Parallel, open-channel lateral flow (immuno) assay substrate based on capillary-channeled polymer films. Analyst 2016; 141:807-14. [DOI: 10.1039/c5an01953b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Presented here is a novel implementation of polypropylene capillary-channeled polymer (C-CP) films, functionalized for bioaffinity separations and implemented as a platform for lateral flow (immuno) assays.
Collapse
Affiliation(s)
| | - Liuwei Jiang
- Department of Chemistry
- Clemson University
- Clemson
- USA
| | | | | |
Collapse
|
25
|
Jiang L, Marcus RK. Comparison of analytical protein separation characteristics for three amine-based capillary-channeled polymer (C-CP) stationary phases. Anal Bioanal Chem 2015; 408:1373-83. [DOI: 10.1007/s00216-015-9000-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 08/19/2015] [Accepted: 08/24/2015] [Indexed: 11/28/2022]
|