1
|
Li P, Wu DR, Yip SH, Sun D, Pawluczyk J, Smith A, Kempson J, Mathur A. Large-scale purification of a deprotected macrocyclic peptide by supercritical fluid chromatography (SFC) integrated with liquid chromatography in discovery chemistry. J Chromatogr A 2024; 1730:465112. [PMID: 38972253 DOI: 10.1016/j.chroma.2024.465112] [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: 04/01/2024] [Revised: 06/18/2024] [Accepted: 06/20/2024] [Indexed: 07/09/2024]
Abstract
A macrocyclic peptide A was successfully purified in large quantities (∼30 g) in >95 % purity by an integrated two-step orthogonal purification process combining supercritical fluid chromatography (SFC) with medium-pressure reverse-phase liquid chromatography (MP-RPLC). MP-RPLC was used to fractionate the crude peptide A, remove unwanted trifluoroacetic acid (TFA) originating from the peptide A cleavage off the resin, and convert the peptide A into ammonium acetate salt form, prior to the final purification by SFC. A co-solvent of methanol/acetonitrile containing ammonium acetate and water in CO2 was developed on a Waters BEH 2-Ethylpyridine column. The developed SFC method was readily scaled up onto a 5 cm diameter column to process multi-gram quantities of the MP-RPLC fraction to reach > 95 % purity with a throughput/productivity of 0.96 g/h. The incorporation of SFC with MP-RPLC has been demonstrated to have a broader application in other large-scale polypeptide purifications.
Collapse
Affiliation(s)
- Peng Li
- Department of Discovery Synthesis, Research and Development, Bristol-Myers Squibb, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA
| | - Dauh-Rurng Wu
- Department of Discovery Synthesis, Research and Development, Bristol-Myers Squibb, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA
| | - Shiuhang Henry Yip
- Department of Discovery Synthesis, Research and Development, Bristol-Myers Squibb, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA.
| | - Dawn Sun
- Department of Discovery Synthesis, Research and Development, Bristol-Myers Squibb, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA
| | - Joseph Pawluczyk
- Department of Discovery Synthesis, Research and Development, Bristol-Myers Squibb, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA
| | - Aaron Smith
- Spectrix, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA
| | - James Kempson
- Department of Discovery Synthesis, Research and Development, Bristol-Myers Squibb, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA
| | - Arvind Mathur
- Department of Discovery Synthesis, Research and Development, Bristol-Myers Squibb, Route 206 & Province Line Rd, Princeton, NJ 08543-4000, USA
| |
Collapse
|
2
|
Schrader M. Origins, Technological Advancement, and Applications of Peptidomics. Methods Mol Biol 2024; 2758:3-47. [PMID: 38549006 DOI: 10.1007/978-1-0716-3646-6_1] [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] [Indexed: 04/02/2024]
Abstract
Peptidomics is the comprehensive characterization of peptides from biological sources instead of heading for a few single peptides in former peptide research. Mass spectrometry allows to detect a multitude of peptides in complex mixtures and thus enables new strategies leading to peptidomics. The term was established in the year 2001, and up to now, this new field has grown to over 3000 publications. Analytical techniques originally developed for fast and comprehensive analysis of peptides in proteomics were specifically adjusted for peptidomics. Although it is thus closely linked to proteomics, there are fundamental differences with conventional bottom-up proteomics. Fundamental technological advancements of peptidomics since have occurred in mass spectrometry and data processing, including quantification, and more slightly in separation technology. Different strategies and diverse sources of peptidomes are mentioned by numerous applications, such as discovery of neuropeptides and other bioactive peptides, including the use of biochemical assays. Furthermore, food and plant peptidomics are introduced similarly. Additionally, applications with a clinical focus are included, comprising biomarker discovery as well as immunopeptidomics. This overview extensively reviews recent methods, strategies, and applications including links to all other chapters of this book.
Collapse
Affiliation(s)
- Michael Schrader
- Department of Bioengineering Sciences, Weihenstephan-Tr. University of Applied Sciences, Freising, Germany.
| |
Collapse
|
3
|
Maurer J, Grouzmann E, Eugster PJ. Tutorial review for peptide assays: An ounce of pre-analytics is worth a pound of cure. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1229:123904. [PMID: 37832388 DOI: 10.1016/j.jchromb.2023.123904] [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: 09/07/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/15/2023]
Abstract
The recent increase in peptidomimetic-based medications and the growing interest in peptide hormones has brought new attention to the quantification of peptides for diagnostic purposes. Indeed, the circulating concentrations of peptide hormones in the blood provide a snapshot of the state of the body and could eventually lead to detecting a particular health condition. Although extremely useful, the quantification of such molecules, preferably by liquid chromatography coupled to mass spectrometry, might be quite tricky. First, peptides are subjected to hydrolysis, oxidation, and other post-translational modifications, and, most importantly, they are substrates of specific and nonspecific proteases in biological matrixes. All these events might continue after sampling, changing the peptide hormone concentrations. Second, because they include positively and negatively charged groups and hydrophilic and hydrophobic residues, they interact with their environment; these interactions might lead to a local change in the measured concentrations. A phenomenon such as nonspecific adsorption to lab glassware or materials has often a tremendous effect on the concentration and needs to be controlled with particular care. Finally, the circulating levels of peptides might be low (pico- or femtomolar range), increasing the impact of the aforementioned effects and inducing the need for highly sensitive instruments and well-optimized methods. Thus, despite the extreme diversity of these peptides and their matrixes, there is a common challenge for all the assays: the need to keep concentrations unchanged from sampling to analysis. While significant efforts are often placed on optimizing the analysis, few studies consider in depth the impact of pre-analytical steps on the results. By working through practical examples, this solution-oriented tutorial review addresses typical pre-analytical challenges encountered during the development of a peptide assay from the standpoint of a clinical laboratory. We provide tips and tricks to avoid pitfalls as well as strategies to guide all new developments. Our ultimate goal is to increase pre-analytical awareness to ensure that newly developed peptide assays produce robust and accurate results.
Collapse
Affiliation(s)
- Jonathan Maurer
- Service of Clinical Pharmacology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Eric Grouzmann
- Service of Clinical Pharmacology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Philippe J Eugster
- Service of Clinical Pharmacology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
| |
Collapse
|
4
|
Analysis of short-chain bioactive peptides by unified chromatography-electrospray ionization mass spectrometry. Part II. Comparison to reversed-phase ultra-high performance liquid chromatography. J Chromatogr A 2022; 1663:462771. [PMID: 34973481 DOI: 10.1016/j.chroma.2021.462771] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 01/16/2023]
Abstract
In the first part of this study, a unified chromatography (UC) analysis method, which is similar to supercritical fluid chromatography (SFC) but with wide mobile phase gradients of pressurized CO2 and solvent, was developed to analyse short-chain peptides, with UV and mass spectrometry (MS) detection. In this second part, the method is compared to a reference reversed-phase ultra-high-performance liquid chromatography (RP-UHPLC) method, based on the analysis of 43 peptides, including 10 linear peptides and 33 cyclic ones. First, the orthogonality between the two methods was examined, based on the retention patterns. As the UC method was developed on a polar stationary phase (Ascentis Express OH5), the elution orders and selectivities were expected to be significantly different from RPLC on a non-polar stationary phase (ACQUITY CSH C18). Secondly, the success rate of the methods was examined, based on successful retention / elution of the peptides and the absence of observed co-elutions between the main peak and impurities. A successful analysis was obtained for 81% of the peptides in UC and 67% in RPLC. Thirdly, the performance of the methods for the intended application of impurity profiling of peptide drug candidates was assessed, based on the comparison of peak purities, the number of impurities detected and the thorough examination of impurity profiles. Excellent complementarity of the two methods for the specific task of impurity profiling, and for the separation of isomeric species was observed, with only one isomeric pair in this set remaining unresolved. The method sensitivity was however better with RPLC than UC. Finally, the operational costs in terms of solvent cost per analysis were the same between the two methods.
Collapse
|
5
|
Gong Y, Qin S, Dai L, Tian Z. The glycosylation in SARS-CoV-2 and its receptor ACE2. Signal Transduct Target Ther 2021; 6:396. [PMID: 34782609 PMCID: PMC8591162 DOI: 10.1038/s41392-021-00809-8] [Citation(s) in RCA: 102] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/10/2021] [Accepted: 10/24/2021] [Indexed: 02/05/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19), a highly infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has infected more than 235 million individuals and led to more than 4.8 million deaths worldwide as of October 5 2021. Cryo-electron microscopy and topology show that the SARS-CoV-2 genome encodes lots of highly glycosylated proteins, such as spike (S), envelope (E), membrane (M), and ORF3a proteins, which are responsible for host recognition, penetration, binding, recycling and pathogenesis. Here we reviewed the detections, substrates, biological functions of the glycosylation in SARS-CoV-2 proteins as well as the human receptor ACE2, and also summarized the approved and undergoing SARS-CoV-2 therapeutics associated with glycosylation. This review may not only broad the understanding of viral glycobiology, but also provide key clues for the development of new preventive and therapeutic methodologies against SARS-CoV-2 and its variants.
Collapse
Affiliation(s)
- Yanqiu Gong
- National Clinical Research Center for Geriatrics and Department of General Practice, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, 610041, Chengdu, China
| | - Suideng Qin
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 200092, Shanghai, China
| | - Lunzhi Dai
- National Clinical Research Center for Geriatrics and Department of General Practice, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, 610041, Chengdu, China.
| | - Zhixin Tian
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 200092, Shanghai, China.
| |
Collapse
|
6
|
Fan X, Cao L, Geng L, Ma Y, Wei Y, Wang Y. Polysaccharides as separation media for the separation of proteins, peptides and stereoisomers of amino acids. Int J Biol Macromol 2021; 186:616-638. [PMID: 34242648 DOI: 10.1016/j.ijbiomac.2021.07.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/29/2021] [Accepted: 07/03/2021] [Indexed: 10/20/2022]
Abstract
Reliable separation of peptides, amino acids and proteins as accurate as possible with the maximum conformation and biological activity is crucial and essential for drug discovery. Polysaccharide, as one of the most abundant natural biopolymers with optical activity on earth, is easy to be functionalized due to lots of hydroxyl groups on glucose units. Over the last few decades, polysaccharide derivatives are gradually employed as effective separation media. The highly-ordered helical structure contributes to complex, diverse molecular recognition ability, allowing polysaccharide derivatives to selectively interact with different analytes. This article reviews the development, application and prospects of polysaccharides as separation media in the separation of proteins, peptides and amino acids in recent years. The chiral molecules mechanism, advantages, limitations, development status and challenges faced by polysaccharides as separation media in molecular recognition are summarized. Meanwhile, the direction of its continued development and future prospects are also discussed.
Collapse
Affiliation(s)
- Xiao Fan
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, PR China
| | - Lilong Cao
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, PR China
| | - Linna Geng
- Department of Infrastructure Engineering, The University of Melbourne, Victoria, Australia
| | - Yalu Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, PR China.
| | - Yuping Wei
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, PR China; Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, PR China.
| | - Yong Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, PR China.
| |
Collapse
|
7
|
Shahnani M, Sefidbakht Y, Maghari S, Mehdi A, Rezadoost H, Ghassempour A. Enantioseparation of mandelic acid on vancomycin column: Experimental and docking study. Chirality 2020; 32:1289-1298. [PMID: 32797693 DOI: 10.1002/chir.23273] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 01/12/2023]
Abstract
So far, no detailed view has been expressed regarding the interactions between vancomycin and racemic compounds including mandelic acid. In the current study, a chiral stationary phase was prepared by using 3-aminopropyltriethoxysilane and succinic anhydride to graft carboxylated silica microspheres and subsequently by activating the carboxylic acid group for vancomycin immobilization. Characterization by elemental analysis, Fourier transform infrared spectroscopy, solid-state nuclear magnetic resonance, and thermogravimetric analysis demonstrated effective functionalization of the silica surface. R and S enantiomers of mandelic acid were separated by the synthetic vancomycin column. Finally, the interaction between vancomycin and R/S mandelic acid enantiomers was simulated by Auto-dock Vina. The binding energies of interactions between R and S enantiomers and vancomycin chiral stationary phase were different. In the most probable interaction, the difference in mandelic acid binding energy was approximately 0.2 kcal/mol. In addition, circular dichroism spectra of vancomycin interacting with R and S enantiomers showed different patterns. Therefore, R and S mandelic acid enantiomers may occupy various binding pockets and interact with different vancomycin functions. These observations emphasized the different retention of R and S mandelic acid enantiomers in vancomycin chiral column.
Collapse
Affiliation(s)
- Mostafa Shahnani
- Medicinal Plants and Drug Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
| | - Yahya Sefidbakht
- Protein Research Center, Shahid Beheshti University Tehran, Tehran, Iran
| | - Shokoofeh Maghari
- Medicinal Plants and Drug Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
| | - Ahmad Mehdi
- Institut Charles Gerhardt de Montpellier, UMR 5253, CNRS-ENSCM-UM, Université de Montpellier CC 1701, Montpellier, France
| | - Hassan Rezadoost
- Medicinal Plants and Drug Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
| | - Alireza Ghassempour
- Medicinal Plants and Drug Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
| |
Collapse
|
8
|
Sun G, Ali A, Kim YS, Kim JS, An HJ, Cheong WJ. An optimized mixed‐mode stationary phase based on silica monolith particles for the separation of peptides and proteins in high‐performance liquid chromatography. J Sep Sci 2019; 42:3621-3630. [DOI: 10.1002/jssc.201900914] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 10/02/2019] [Accepted: 10/02/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Genlin Sun
- Department of ChemistryInha University Incheon South Korea
| | - Ashraf Ali
- Department of ChemistryInha University Incheon South Korea
| | - Yune Sung Kim
- Department of ChemistryInha University Incheon South Korea
| | - Jeong Soo Kim
- Department of ChemistryInha University Incheon South Korea
| | - Hyun Joo An
- Graduate School of Analytical Science and TechnologyChungnam National University Daejeon South Korea
| | - Won Jo Cheong
- Department of ChemistryInha University Incheon South Korea
| |
Collapse
|
9
|
Samuelsson J, Eiriksson FF, Åsberg D, Thorsteinsdóttir M, Fornstedt T. Determining gradient conditions for peptide purification in RPLC with machine-learning-based retention time predictions. J Chromatogr A 2019; 1598:92-100. [DOI: 10.1016/j.chroma.2019.03.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/20/2019] [Accepted: 03/21/2019] [Indexed: 01/22/2023]
|
10
|
Identification of bioactive short peptides in cow milk by high-performance liquid chromatography on C18 and porous graphitic carbon coupled to high-resolution mass spectrometry. Anal Bioanal Chem 2019; 411:3395-3404. [DOI: 10.1007/s00216-019-01815-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/15/2019] [Accepted: 03/27/2019] [Indexed: 12/24/2022]
|
11
|
Abstract
Peptidomics is the comprehensive characterization of peptides from biological sources mainly by HPLC and mass spectrometry. Mass spectrometry allows the detection of a multitude of single peptides in complex mixtures. The term first appeared in full papers in the year 2001, after over 100 years of peptide research with a main focus on one or a few specific peptides. Within the last 15 years, this new field has grown to over 1200 publications. Mass spectrometry techniques, in combination with other analytical methods, were developed for the fast and comprehensive analysis of peptides in proteomics and specifically adjusted to implement peptidomics technologies. Although peptidomics is closely linked to proteomics, there are fundamental differences with conventional bottom-up proteomics. The development of peptidomics is described, including the most important implementations for its technological basis. Different strategies are covered which are applied to several important applications, such as neuropeptidomics and discovery of bioactive peptides or biomarkers. This overview includes links to all other chapters in the book as well as recent developments of separation, mass spectrometric, and data processing technologies. Additionally, some new applications in food and plant peptidomics as well as immunopeptidomics are introduced.
Collapse
|
12
|
Chen BJ, Lam TC, Liu LQ, To CH. Post-translational modifications and their applications in eye research (Review). Mol Med Rep 2017; 15:3923-3935. [PMID: 28487982 DOI: 10.3892/mmr.2017.6529] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Accepted: 02/22/2017] [Indexed: 02/05/2023] Open
Abstract
Gene expression is the process by which genetic information is used for the synthesis of a functional gene product, and ultimately regulates cell function. The increase of biological complexity from genome to proteome is vast, and the post-translational modification (PTM) of proteins contribute to this complexity. The study of protein expression and PTMs has attracted attention in the post‑genomic era. Due to the limited capability of conventional biochemical techniques in the past, large‑scale PTM studies were technically challenging. The introduction of effective protein separation methods, specific PTM purification strategies and advanced mass spectrometers has enabled the global profiling of PTMs and the identification of a targeted PTM within the proteome. The present review provides an overview of current proteomic technologies being applied in eye research, with a particular focus on studies of PTMs in ocular tissues and ocular diseases.
Collapse
Affiliation(s)
- Bing-Jie Chen
- Department of Optometry and Visual Science, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Thomas Chuen Lam
- Laboratory of Experimental Optometry, Centre for Myopia Research, School of Optometry, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR, P.R. China
| | - Long-Qian Liu
- Department of Optometry and Visual Science, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Chi-Ho To
- Laboratory of Experimental Optometry, Centre for Myopia Research, School of Optometry, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, SAR, P.R. China
| |
Collapse
|
13
|
Åsberg D, Langborg Weinmann A, Leek T, Lewis RJ, Klarqvist M, Leśko M, Kaczmarski K, Samuelsson J, Fornstedt T. The importance of ion-pairing in peptide purification by reversed-phase liquid chromatography. J Chromatogr A 2017; 1496:80-91. [PMID: 28363419 DOI: 10.1016/j.chroma.2017.03.041] [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: 12/15/2016] [Revised: 03/07/2017] [Accepted: 03/18/2017] [Indexed: 10/19/2022]
Abstract
The adsorption mechanism for three peptides was studied under overloaded conditions through adsorption isotherm measurements in the presence of an ion-pairing reagent, trifluoroacetic acid (TFA), on an end-capped C18-bonded stationary phase. The overall aim of the study was to obtain a better understanding of how the acetonitrile and the TFA fractions in the eluent affected the overloaded elution profiles and the selectivity between peptides using mechanistic modelling and multivariate design of experiments. When studying the effect of TFA, direct evidence for ion pair formation between a peptide and TFA in acetonitrile-water solutions was provided by fluorine-proton nuclear Overhauser NMR enhancement experiments and the adsorption of TFA on the stationary phase was measured by frontal analysis. The adsorption isotherms for each peptide were then determined by the inverse method at eight TFA concentrations ranging from 2.6mM to 37.3mM (0.02-0.29vol-%) in isocratic elution. The equilibrium between the peptide ion and the peptide-TFA complex was modelled by coupling the mass-balance to reaction kinetics and determining separate adsorption isotherms for the two species. We found that a Langmuir isotherm described the elution profile of peptide-TFA complex well while the peptide ion was described by a bi-Langmuir adsorption isotherm since it exhibited strong secondary interactions. The elution profiles had an unfavorable shape at low TFA concentrations consisting of a spike in their front and a long tailing rear due to the secondary interactions for the peptide ion having very low saturation capacity. The acetonitrile dependence on the adsorption isotherms was studied by determination of adsorption isotherms directly from elution profiles obtained in gradient elution which enabled a broad acetonitrile interval to be studied. Here, it was found that the column saturation capacity was quickly reached at very low acetonitrile fractions and that there were significant variations in adsorption with the molecular weight. Finally, practical implications for method development are discussed based on an experimental design where gradient slope and TFA concentrations are used as factors.
Collapse
Affiliation(s)
- Dennis Åsberg
- Department of Engineering and Chemical Sciences, Karlstad University, SE-651 88 Karlstad, Sweden
| | - Annika Langborg Weinmann
- Respiratory, Inflammation and Autoimmunity, Innovative Medicines and Early Development Biotech Unit, AstraZeneca, SE 431 83 Mölndal, Sweden
| | - Tomas Leek
- Respiratory, Inflammation and Autoimmunity, Innovative Medicines and Early Development Biotech Unit, AstraZeneca, SE 431 83 Mölndal, Sweden
| | - Richard J Lewis
- Respiratory, Inflammation and Autoimmunity, Innovative Medicines and Early Development Biotech Unit, AstraZeneca, SE 431 83 Mölndal, Sweden
| | - Magnus Klarqvist
- Respiratory, Inflammation and Autoimmunity, Innovative Medicines and Early Development Biotech Unit, AstraZeneca, SE 431 83 Mölndal, Sweden
| | - Marek Leśko
- Department of Chemical and Process Engineering, Rzeszów University of Technology, PL-359 59 Rzeszów, Poland
| | - Krzysztof Kaczmarski
- Department of Chemical and Process Engineering, Rzeszów University of Technology, PL-359 59 Rzeszów, Poland
| | - Jörgen Samuelsson
- Department of Engineering and Chemical Sciences, Karlstad University, SE-651 88 Karlstad, Sweden
| | - Torgny Fornstedt
- Department of Engineering and Chemical Sciences, Karlstad University, SE-651 88 Karlstad, Sweden.
| |
Collapse
|
14
|
Ashok NR, Aparna HS. Empirical and bioinformatic characterization of buffalo (Bubalus bubalis) colostrum whey peptides & their angiotensin I-converting enzyme inhibition. Food Chem 2017; 228:582-594. [PMID: 28317767 DOI: 10.1016/j.foodchem.2017.02.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 01/20/2017] [Accepted: 02/07/2017] [Indexed: 10/20/2022]
Abstract
Whey based peptides are well known for their nutritional and multifunctional properties. In this context, whey proteins from buffalo colostrum & milk were digested by in vitro simulation digestion and analyzed by nano-LC-MS/MS. Functional protein association networks, gene annotations and localization of identified proteins were carried out. An ACE inhibitory peptide sorted from the library was custom synthesized and an in vitro ACE assay was performed. The study led to the identification of 74 small peptides which were clustered into 5 gene functional groups and majority of them were secretory proteins. Among the identified peptides, majority of them were found identical to angiotensin I-converting enzyme (ACE) inhibitors, antioxidant, antimicrobial, immunomodulatory and opioidal peptides. An octapeptide (m/z - 902.51, IQKVAGTW) synthesized was found to inhibit ACE with an IC50 of 300±2µM. The present investigation thus establishes newer vista for food derived peptides having ACE inhibitory potential for nutraceutical or therapeutic applications.
Collapse
Affiliation(s)
- N R Ashok
- Department of Studies in Biotechnology, University of Mysore, Mysore, Karnataka 570 006 India
| | - H S Aparna
- Department of Studies in Biotechnology, University of Mysore, Mysore, Karnataka 570 006 India.
| |
Collapse
|
15
|
Mikšík I. Capillary electrochromatography of proteins and peptides (2006-2015). J Sep Sci 2016; 40:251-271. [DOI: 10.1002/jssc.201600908] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/01/2016] [Accepted: 10/01/2016] [Indexed: 01/14/2023]
Affiliation(s)
- Ivan Mikšík
- Institute of Physiology; Academy of Sciences of the Czech Republic; Prague Czech Republic
| |
Collapse
|
16
|
Lü A, Li Q, Lü H, Yu J. Analysis of Four Cephalosporins in Milk by Capillary Electrochromatography with O-Cynaoethyl Chitosan-Coated Open Tubular Column. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2014.976874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
17
|
Dobrovolskaia MA, Neun BW, Man S, Ye X, Hansen M, Patri AK, Crist RM, McNeil SE. Protein corona composition does not accurately predict hematocompatibility of colloidal gold nanoparticles. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2014; 10:1453-63. [PMID: 24512761 PMCID: PMC4125554 DOI: 10.1016/j.nano.2014.01.009] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 01/23/2014] [Accepted: 01/25/2014] [Indexed: 11/16/2022]
Abstract
Proteins bound to nanoparticle surfaces are known to affect particle clearance by influencing immune cell uptake and distribution to the organs of the mononuclear phagocytic system. The composition of the protein corona has been described for several types of nanomaterials, but the role of the corona in nanoparticle biocompatibility is not well established. In this study we investigate the role of nanoparticle surface properties (PEGylation) and incubation times on the protein coronas of colloidal gold nanoparticles. While neither incubation time nor PEG molecular weight affected the specific proteins in the protein corona, the total amount of protein binding was governed by the molecular weight of PEG coating. Furthermore, the composition of the protein corona did not correlate with nanoparticle hematocompatibility. Specialized hematological tests should be used to deduce nanoparticle hematotoxicity. From the clinical editor: It is overall unclear how the protein corona associated with colloidal gold nanoparticles may influence hematotoxicity. This study warns that PEGylation itself may be insufficient, because composition of the protein corona does not directly correlate with nanoparticle hematocompatibility. The authors suggest that specialized hematological tests must be used to deduce nanoparticle hematotoxicity.
Collapse
Affiliation(s)
- Marina A Dobrovolskaia
- Nanotechnology Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland.
| | - Barry W Neun
- Nanotechnology Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland
| | - Sonny Man
- Nanotechnology Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland
| | - Xiaoying Ye
- Laboratory of Proteomics and Analytical Technology, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland
| | - Matthew Hansen
- Nanotechnology Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland
| | - Anil K Patri
- Nanotechnology Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland
| | - Rachael M Crist
- Nanotechnology Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland
| | - Scott E McNeil
- Nanotechnology Characterization Laboratory, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, Maryland
| |
Collapse
|
18
|
|
19
|
Maes K, Smolders I, Michotte Y, Van Eeckhaut A. Strategies to reduce aspecific adsorption of peptides and proteins in liquid chromatography-mass spectrometry based bioanalyses: an overview. J Chromatogr A 2014; 1358:1-13. [PMID: 25022477 DOI: 10.1016/j.chroma.2014.06.072] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 06/11/2014] [Accepted: 06/22/2014] [Indexed: 12/20/2022]
Abstract
In the drug-discovery setting, the development of new peptide and protein-based biopharmaceuticals attracts increased attention from the pharmaceutical industry and consequently demands the development of high-throughput LC-MS methods. Regulatory guidelines require bioanalytical methods to be validated not only in terms of linearity, sensitivity, accuracy, precision, selectivity and stability, but also in terms of carryover. Carryover results from the aspecific adsorption of analyte(s) to parts of the analytical system and thus introduces bias in both identification and quantification assays. Moreover, nonspecific binding occurs at the surface of materials used during sample preparation, such as pipette tips, sample tubes and LC-vials. Hence, linearity, sensitivity and repeatability of the analyses are negatively affected. Due to the great diversity in physicochemical properties of biomolecules, there is no general approach available to minimize adsorption phenomena. Therefore, we aim to present different strategies which can be generically applied to reduce nonspecific binding of peptides and proteins. In the first part of this review, a systematic approach is proposed to guide the reader through the different solvents which can be used to dissolve the analyte of interest. Indeed, proper solubilization is one of the most important factors for a successful analysis. In addition, alternative approaches are described to improve analyte recovery from the sample vial. The second part focuses on strategies to efficiently reduce adsorption at components of the autosampler, column and mass spectrometer. Thereby carryover is reduced while maintaining a sufficiently wide dynamic range of the assay.
Collapse
Affiliation(s)
- Katrien Maes
- Department of Pharmaceutical Chemistry and Drug Analysis, Center for Neurosciences (C4N), Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Ilse Smolders
- Department of Pharmaceutical Chemistry and Drug Analysis, Center for Neurosciences (C4N), Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Yvette Michotte
- Department of Pharmaceutical Chemistry and Drug Analysis, Center for Neurosciences (C4N), Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Ann Van Eeckhaut
- Department of Pharmaceutical Chemistry and Drug Analysis, Center for Neurosciences (C4N), Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium.
| |
Collapse
|
20
|
Lin HR, Wu CC, Wu YH, Hsu CW, Cheng ML, Chiu DTY. Proteome-wide dysregulation by glucose-6-phosphate dehydrogenase (G6PD) reveals a novel protective role for G6PD in aflatoxin B₁-mediated cytotoxicity. J Proteome Res 2013; 12:3434-48. [PMID: 23742107 DOI: 10.1021/pr4002959] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) is pivotal to reduced nicotinamide adenine dinucleotide phosphate (NADPH) production and cellular redox balance. Cells with G6PD deficiency are susceptible to oxidant-induced death at high oxidative stress. However, it remains unclear what precise biological processes are affected by G6PD deficiency due to altered cellular redox homeostasis, particularly at low oxidative stress. To further explore the biological role of G6PD, we generated G6PD-knockdown cell clones using lung cancer line A549. We identified proteins differentially expressed in the knockdown clones without the addition of exogenous oxidant by means of isobaric tags for relative and absolute quantification (iTRAQ) labeling coupled with multidimensional liquid chromatography-mass spectrometry (LC-MS/MS). We validated a panel of proteins that showed altered expression in G6PD-knockdown clones and were involved in metabolism of xenobiotic and glutathione (GSH) as well as energy metabolism. To determine the physiological relevancy of our findings, we investigated the functional consequence of G6PD depletion in cells treated with a prevalent xenobiotic, aflatoxin B₁(AFB₁). We found a protective role of G6PD in AFB₁-induced cytotoxicity, possibly via providing NADPH for NADPH oxidase to induce epoxide hydrolase 1 (EPHX1), a xenobiotic-metabolizing enzyme. Collectively, our findings reveal for the first time a proteome-wide dysregulation by G6PD depletion under the condition without exogenous oxidant challenge, and we suggest a novel association of G6PD activity with AFB₁-related xenobiotic metabolism.
Collapse
Affiliation(s)
- Hsin-Ru Lin
- Graduate Institute of Biomedical Science, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | | | | | | | | | | |
Collapse
|
21
|
Aqel A, ALOthman ZA, Yusuf K, Badjah-Hadj-Ahmed AY, Alwarthan AA. Preparation and Evaluation of Benzyl Methacrylate Monoliths for Capillary Chromatography. J Chromatogr Sci 2013; 52:201-10. [DOI: 10.1093/chromsci/bmt011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
22
|
D'Hondt M, Gevaert B, Stalmans S, Van Dorpe S, Wynendaele E, Peremans K, Burvenich C, De Spiegeleer B. Reversed-phase fused-core HPLC modeling of peptides. J Pharm Anal 2012; 3:93-101. [PMID: 29403802 PMCID: PMC5760978 DOI: 10.1016/j.jpha.2012.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 11/20/2012] [Indexed: 11/17/2022] Open
Abstract
Different fused-core stationary phase chemistries (C18, Amide, Phenyl-hexyl and Peptide ES-C18) were used for the analysis of 21 structurally representative model peptides. In addition, the effects of the mobile phase composition (ACN or MeOH as organic modifier; formic acid or acetic acid, as acidifying component) on the column selectivity, peak shape and overall chromatographic performance were evaluated. The RP-amide column, combined with a formic acid–acetonitrile based gradient system, performed as best. A peptide reversed-phase retention model is proposed, consisting of 5 variables: log SumAA, log Sv, clog P, log nHDon and log nHAcc. Quantitative structure-retention relationship (QSRR) models were constructed for 16 different chromatographic systems. The accuracy of this peptide retention model was demonstrated by the comparison between predicted and experimentally obtained retention times, explaining on average 86% of the variability. Moreover, using an external set of 5 validation peptides, the predictive power of the model was also demonstrated. This peptide retention model includes the novel in-silico calculated amino acid descriptor, AA, which was calculated from log P, 3D-MoRSE, RDF and WHIM descriptors.
Collapse
Affiliation(s)
- Matthias D'Hondt
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium
| | - Bert Gevaert
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium
| | - Sofie Stalmans
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium
| | - Sylvia Van Dorpe
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium
| | - Evelien Wynendaele
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium
| | - Kathelijne Peremans
- Departments of Medical Imaging and Physiology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B9820 Merelbeke, Belgium
| | - Christian Burvenich
- Departments of Medical Imaging and Physiology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B9820 Merelbeke, Belgium
| | - Bart De Spiegeleer
- Drug Quality and Registration (DruQuaR) group, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Ghent, Belgium
| |
Collapse
|
23
|
Pailleux F, Beaudry F. Internal standard strategies for relative and absolute quantitation of peptides in biological matrices by liquid chromatography tandem mass spectrometry. Biomed Chromatogr 2012; 26:881-91. [DOI: 10.1002/bmc.2757] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 04/23/2012] [Indexed: 01/08/2023]
Affiliation(s)
| | - Francis Beaudry
- Groupe de Recherche en Pharmacologie Animal du Québec (GREPAQ), Département de biomédecine vétérinaire, Faculté de médecine vétérinaire; Université de Montréal, Saint-Hyacinthe; Québec; Canada
| |
Collapse
|
24
|
Wu Q, Yuan H, Zhang L, Zhang Y. Recent advances on multidimensional liquid chromatography-mass spectrometry for proteomics: from qualitative to quantitative analysis--a review. Anal Chim Acta 2012; 731:1-10. [PMID: 22652259 DOI: 10.1016/j.aca.2012.04.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Revised: 04/09/2012] [Accepted: 04/09/2012] [Indexed: 02/08/2023]
Abstract
With the acceleration of proteome research, increasing attention has been paid to multidimensional liquid chromatography-mass spectrometry (MDLC-MS) due to its high peak capacity and separation efficiency. Recently, many efforts have been put to improve MDLC-based strategies including "top-down" and "bottom-up" to enable highly sensitive qualitative and quantitative analysis of proteins, as well as accelerate the whole analytical procedure. Integrated platforms with combination of sample pretreatment, multidimensional separations and identification were also developed to achieve high throughput and sensitive detection of proteomes, facilitating highly accurate and reproducible quantification. This review summarized the recent advances of such techniques and their applications in qualitative and quantitative analysis of proteomes.
Collapse
Affiliation(s)
- Qi Wu
- Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | | | | | | |
Collapse
|
25
|
Ren J, Wang J, Wang J, Luedtke NW, Wang E. Enantioselective and label-free detection of oligopeptide via fluorescent indicator displacement. Biosens Bioelectron 2012; 35:401-406. [PMID: 22483357 DOI: 10.1016/j.bios.2012.03.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Revised: 03/06/2012] [Accepted: 03/15/2012] [Indexed: 02/04/2023]
Abstract
In this work, a simple and label-free fluorescent method via fluorescent indicator displacement (FID) was proposed for enantioselectively determining d-enantiomer of arginine vasopressin (DV) using DV-specific DNA aptamer (V-apt) and one guanidiniophthalocyanine dye (Zn-DIGP). Zn-DIGP that preferentially binds to single-stranded DNA with fluorescence enhancement rather than duplexes occupies the long internal loop of V-apt and generates intensive fluorescence. Then DV is introduced into the solution containing Zn-DIGP and V-apt, and displaces the Zn-DIGP from the binding site of internal loop, leading to fluorescence decrease. But l-enantiomer cannot induce any fluorescence change due to the selectivity of V-apt. This established FID technique can detect DV with a detection limit of 100 nM and exhibits a broad linear range, and is able to discriminate enantiomers of arginine vasopressin unambiguously. Moreover chiral separation by chromatography, complicated experimental procedures and covalent modification of tags (such as organic dyes, redox-active metal complexes) are avoided in our strategy. This simple and label-free method is promising for fabricating diverse aptasensors to determine other biomolecules and drugs.
Collapse
Affiliation(s)
- Jiangtao Ren
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
| | - Jiahai Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Jin Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; Department of Chemistry, Physics and Applied Mathematics, State University of New York at Stony Brook, Stony Brook, NY 11794, USA.
| | - Nathan W Luedtke
- Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Zürich CH-8057, Switzerland, United Kingdom
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| |
Collapse
|
26
|
TAKAHASHI N, MASUHARA Y, JINNO N, HASHIMOTO M, TSUKAGOSHI K. Biomolecule Analyses in an Open-Tubular Capillary Chromatography Using Ternary Mixed Carrier Solvents with Chemiluminescence Detection. ANAL SCI 2012; 28:351-7. [DOI: 10.2116/analsci.28.351] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Naoya TAKAHASHI
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Yuji MASUHARA
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Naoya JINNO
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Masahiko HASHIMOTO
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Kazuhiko TSUKAGOSHI
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| |
Collapse
|
27
|
Sagar S, Gehring C, Minneman KP. Methods to Isolate and Identify New Plant Signaling Peptides. SIGNALING AND COMMUNICATION IN PLANTS 2012. [DOI: 10.1007/978-3-642-27603-3_12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
28
|
Kašička V. Recent developments in CE and CEC of peptides (2009-2011). Electrophoresis 2011; 33:48-73. [DOI: 10.1002/elps.201100419] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Revised: 09/19/2011] [Accepted: 09/20/2011] [Indexed: 12/12/2022]
|
29
|
Rapid and simultaneous determination of hexapeptides (Ac-EEMQRR-amide and H2N-EEMQRR-amide) in anti-wrinkle cosmetics by hydrophilic interaction liquid chromatography–solid phase extraction preparation and hydrophilic interaction liquid chromatography with tandem mass spectrometry. J Chromatogr A 2011; 1218:7956-63. [DOI: 10.1016/j.chroma.2011.08.091] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 08/26/2011] [Accepted: 08/29/2011] [Indexed: 11/20/2022]
|
30
|
Cavazzini A, Pasti L, Massi A, Marchetti N, Dondi F. Recent applications in chiral high performance liquid chromatography: A review. Anal Chim Acta 2011; 706:205-22. [DOI: 10.1016/j.aca.2011.08.038] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/08/2011] [Accepted: 08/25/2011] [Indexed: 01/17/2023]
|
31
|
The absolute quantification of endogenous levels of brain neuropeptides in vivo using LC-MS/MS. Bioanalysis 2011; 3:1271-85. [PMID: 21649502 DOI: 10.4155/bio.11.91] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Neuropeptides seem to play an important role when the CNS is challenged. In order to obtain better insights into the central peptidergic effects, it is essential to monitor their concentration in the brain. Quantification of neuropeptides in dialysates is challenging due to their low extracellular concentrations (low pM range), their low microdialysis efficiencies, the need for acceptable temporal resolution, the small sample volumes, the complexity of the matrix and the tendency of peptides to stick to glass and polymeric materials. The quantification of neuropeptides in dialysates therefore necessitates the use of very sensitive nano-LC-MS/MS methods. A number of LC-MS/MS and microdialysis parameters need to be optimized to achieve maximal sensitivity. The optimized and validated methods can be used to investigate the in vivo neuropeptide release during pathological conditions, in this way initiating new and immense challenges for the development of new drugs.
Collapse
|
32
|
The application of MALDI TOF MS in biopharmaceutical research. Int J Pharm 2011; 417:70-82. [DOI: 10.1016/j.ijpharm.2010.12.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2010] [Revised: 12/05/2010] [Accepted: 12/06/2010] [Indexed: 12/21/2022]
|
33
|
Preparation and Evaluation of Long Chain Alkyl Methacrylate Monoliths for Capillary Chromatography. Chromatographia 2011. [DOI: 10.1007/s10337-011-2047-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
34
|
Du F, Bai Y, Bai Y, Liu H. Quantitative Detection of Trace Systemins in Solanaceous Plants by Immunoaffinity Purification Combined with Liquid Chromatography/Electrospray Quadrupole Time-of-Flight Mass Spectrometry. Anal Chem 2010; 82:9374-83. [DOI: 10.1021/ac101983b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Fuyou Du
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, 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, Institute of Analytical Chemistry, 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, Institute of Analytical Chemistry, 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, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
35
|
Lin JL, Bonnichsen MH, Nogeh EU, Raftery MJ, Thomas PS. Proteomics in detection and monitoring of asthma and smoking-related lung diseases. Expert Rev Proteomics 2010; 7:361-72. [PMID: 20536308 DOI: 10.1586/epr.10.9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Asthma, chronic obstructive pulmonary disease (COPD) and lung cancer cause extensive mortality and morbidity worldwide. However, the current state-of-the-art diagnosis and management schemes of these diseases are suboptimal as the incidence of asthma has risen by 250% over the last two decades and the 5-year mortality rate of lung cancer remains at 88%. Proteomic analysis is at the frontier of medical research and demonstrates tremendous potential in the early detection, diagnosis and staging, as well as providing novel therapeutic targets for improved management of smoking-related lung diseases. Advances in analytical tools, such as 2D gel electrophoresis, mass spectrometry, protein arrays and improved bioinformatics, allow sensitive and specific biomarker/protein profile discoveries and the infusion of new knowledge towards the molecular basis of lung diseases and their progression. Significant hurdles still stand between these laboratory findings and their applications in clinical practice. One of the challenges is the difficulty in the selection of samples that provide scope into the specific disease entity. Induced sputum, bronchoalveolar lavage, exhaled breath and exhaled breath condensate are methods of sampling airway and lung fluids that can serve as a window to assess the microenvironment of the lungs. With better study design standardization and the implementation of novel technologies to reach the optimal research standard, there is enough reason be optimistic about the future of proteomic research and its clinical implications.
Collapse
Affiliation(s)
- Jiun-Lih Lin
- Faculty of Medicine, University of New South Wales, Sydney, Australia
| | | | | | | | | |
Collapse
|
36
|
Babushok VI, Zenkevich IG. Retention Characteristics of Peptides in RP-LC: Peptide Retention Prediction. Chromatographia 2010. [DOI: 10.1365/s10337-010-1721-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
37
|
Abstract
Metabolites reflect the dynamic processes underlying cellular homeostasis. Recent advances in analytical chemistry and molecular biology have set the stage for metabolite profiling to help us understand complex molecular processes and physiology. Metabolomics is the comparative analysis of metabolite flux and how it relates to biological phenotypes. As an intermediate phenotype, metabolite signatures capture a unique aspect of cellular dynamics that is not typically interrogated, providing a distinct perspective on cellular homeostasis. To date, there have been only a few metabolomics studies investigating cardiovascular diseases. In this review, we explore the principles of metabolomics and how it can provide further insight into the mechanisms of cardiovascular physiology and ultimately lead to improved diagnostic and therapeutic options for patients with cardiovascular disease.
Collapse
|
38
|
Ren Y, Han Z, Chu X, Zhang J, Cai Z, Wu Y. Simultaneous determination of bovine α-lactalbumin and β-lactoglobulin in infant formulae by ultra-high-performance liquid chromatography–mass spectrometry. Anal Chim Acta 2010; 667:96-102. [DOI: 10.1016/j.aca.2010.04.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 04/06/2010] [Accepted: 04/06/2010] [Indexed: 10/19/2022]
|
39
|
|
40
|
Abstract
Although there are many publications related to technological or methodological developments of CEC, few focus on the analysis of natural products, especially phytochemical bioactive compounds. This review summarized the application of CEC in the analysis of phytochemical bioactive components, including flavonoids, nucleosides, steroids, lignans, quinones and coumarins, as well as fingerprint analysis of herbs. The strategies for optimization of CEC conditions and detection were also discussed.
Collapse
Affiliation(s)
- Feng-qing Yang
- Department of Pharmaceutics, College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P. R. China
| | | | | |
Collapse
|
41
|
JINNO N, MURAKAMI M, HASHIMOTO M, TSUKAGOSHI K. Analytical Conditions and Separation Performance of Capillary Chromatography Based on the Tube Radial Distribution of Aqueous-Organic Mixture Carrier Solvents under Laminar-Flow Conditions. ANAL SCI 2010; 26:737-42. [DOI: 10.2116/analsci.26.737] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Naoya JINNO
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Mari MURAKAMI
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Masahiko HASHIMOTO
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Kazuhiko TSUKAGOSHI
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| |
Collapse
|
42
|
|
43
|
Jinno N, Tsuji K, Shikatani K, Hashimoto M, Tsukagoshi K. Capillary chromatography based on tube radial distribution of aqueous-organic mixture carrier solvents: Introduction of inner-wall-modified capillary tubes. J Sep Sci 2009; 32:4096-100. [DOI: 10.1002/jssc.200900470] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
44
|
Inoue K, Hattori Y, Hino T, Oka H. An approach to on-line electrospray mass spectrometric detection of polypeptide antibiotics of enramycin for high-speed counter-current chromatographic separation. J Pharm Biomed Anal 2009; 51:1154-60. [PMID: 20004073 DOI: 10.1016/j.jpba.2009.11.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2009] [Revised: 11/09/2009] [Accepted: 11/09/2009] [Indexed: 11/16/2022]
Abstract
In the field of pharmaceutical and biomedical analysis of peptides, a rapid on-line detection and identification for a methodology have been required for the discovery of new biological active products. In this study, a high-speed counter-current chromatography with electrospray mass spectrometry (HSCCC/ESI-MS) was developed for the on-line detection and purification of polypeptide antibiotics of enramycin-A and -B. The analytes were purified on HSCCC model CCC-1000 (multi-layer coil planet centrifuge) with a volatile solvent of two-phase system composed of n-butanol/hexane/0.05% aqueous trifluoroacetic acid solution (43/7/50, V/V/V), and detected on an LCMS-2010EV quadrupole mass spectrometer fitted with an ESI source system in positive ionization following scan mode (m/z 100-2000). The HSCCC/ESI-MS peaks indicated that enramycin-A (major m/z 786 [M+3H](3+) and minor m/z 1179 [M+2H](2+)) and enramycin-B (major m/z 791 [M+3H](3+) and minor m/z 1185 [M+2H](2+)) have the peak resolution value of 2.9 from 15mg of loaded enramycin powder. The HSCCC collected amounts of the peak fractions were additionally 4.3mg (enramycin-A), and 5.9mg (enramycin-B), respectively. These purified substances were analyzed by LC/ESI-MS with scan positive mode. Based on the LC/ESI-MS chromatograms and spectra of the fractions, enramycin-A and -B were estimated to be over 95% purity. The overall results indicate that this approach of HSCCC/ESI-MS is a powerful technique for the purification and identification of bioactive peptides.
Collapse
Affiliation(s)
- Koichi Inoue
- Department of Physical and Analytical Chemistry, School of Pharmacy, Kinjo Gakuin University, 2-1723 Omori, Moriyama-ku, Nagoya, Aichi 463-8521, Japan.
| | | | | | | |
Collapse
|
45
|
Chitta KR, Van Meter DS, Stalcup AM. Separation of peptides by HPLC using a surface-confined ionic liquid stationary phase. Anal Bioanal Chem 2009; 396:775-81. [PMID: 19876619 DOI: 10.1007/s00216-009-3228-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 10/05/2009] [Accepted: 10/10/2009] [Indexed: 10/20/2022]
Abstract
A butylimidazolium bromide surface-confined ionic liquid stationary phase was synthesized in-house. The synthesized phase was investigated for the separation of five peptides (Gly-Tyr, Val-Tyr-Val, leucine enkephalin, methionine enkephalin, and angiotensin-II). The peptides were successfully separated in less than 5 min. The effect of trifluoroacetic acid (TFA) on the separation of peptides was evaluated with results confirming that TFA was not acting as ion-pairing agent in separation of peptides on this phase.
Collapse
Affiliation(s)
- K R Chitta
- Department of Chemistry, P. O. Box 210172, Cincinnati, OH 45221-0172, USA
| | | | | |
Collapse
|
46
|
JINNO N, HASHIMOTO K, HASHIMOTO M, TSUKAGOSHI K. Capillary Chromatography Based on the Tube Radial Distribution of Aqueous-Organic Mixture Carrier Solvents: Effects of the Inner-Wall Characteristics of the Fused-Silica Tube on Separation Performance. ANAL SCI 2009; 25:1369-71. [DOI: 10.2116/analsci.25.1369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Naoya JINNO
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Ko HASHIMOTO
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Masahiko HASHIMOTO
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| | - Kazuhiko TSUKAGOSHI
- Department of Chemical Engineering and Materials Science, Faculty of Science and Engineering, Doshisha University
| |
Collapse
|