1
|
Li C, Chen Q, Rong J, He H, Lu Y, Liu Y, Wang Z. LC-MS characterization of N/O-glycans of α- and β-subunits of chicken ovomucin separated by SDS-PAGE. Anal Biochem 2024; 694:115625. [PMID: 39038508 DOI: 10.1016/j.ab.2024.115625] [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: 12/08/2023] [Revised: 07/13/2024] [Accepted: 07/17/2024] [Indexed: 07/24/2024]
Abstract
As the main active glycoprotein of egg white, the biological functions of chicken ovomucin α- and β-subunit are closely related to the structure of glycans. However, the exact composition and structure of the subunit glycans are still unknown. We obtained highly pure chicken ovomucin α-subunit and β-subunit protein bands by the strategy combined with two-step isoelectric precipitation and SDS-PAGE gel electrophoresis. The ammonia-catalyzed one-pot procedure was then used to release and capture α-and β-subunit protein glycans with 1-phenyl- 3-Methyl-5-pyrazolone (PMP). The N/O-glycans of bis-PMP derivatives were purified and analyzed by LC-MS. More importantly, an effective dual modification was performed to accurately quantify neutral and sialylated O-glycans through methylamidation of sialic acid residues and simultaneously through carbonyl condensation reactions of reducing ends with PMP. We first showed that the α-subunit protein has only N-glycosylation modification, and the β-subunit only O-glycosylation, a total of 22 N-glycans and 20 O-glycans were identified in the α- and β-subunit, respectively. In addition, the complex N-glycan (47 %) and the sialylated O-glycan (77 %) are each major types of the above subunits. Such findings in this study provide a basis for studying the functional and biological activities of chicken ovomucin glycans.
Collapse
Affiliation(s)
- Cheng Li
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an, 710069, China
| | - Qinghui Chen
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an, 710069, China
| | - Jinqiao Rong
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an, 710069, China
| | - Houde He
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an, 710069, China
| | - Yu Lu
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an, 710069, China
| | - Yuxia Liu
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an, 710069, China.
| | - Zhongfu Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an, 710069, China.
| |
Collapse
|
2
|
Wang D, Huang J, Zhang H, Gu TJ, Li L. Cotton Ti-IMAC: Developing Phosphorylated Cotton as a Novel Platform for Phosphopeptide Enrichment. ACS APPLIED MATERIALS & INTERFACES 2023; 15:47893-47901. [PMID: 37812448 PMCID: PMC10730235 DOI: 10.1021/acsami.3c08697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Protein phosphorylation is an important post-translational modification (PTM), which is involved in many important cellular functions. Understanding protein phosphorylation at the molecular level is critical to deciphering its relevant biological processes and signaling networks. Mass spectrometry (MS) has become a powerful tool for the comprehensive profiling of protein phosphorylation. Yet the low ionization efficiency and low abundance of phosphopeptides among complex biological samples make its MS analysis challenging; an enrichment strategy with high efficiency and selectivity is always necessary prior to MS analysis. In this study, we developed a phosphorylated cotton-fiber-based Ti(IV)-IMAC material (termed as Cotton Ti-IMAC) that can serve as a novel platform for phosphopeptide enrichment. The cotton fiber can be effectively grafted with phosphate groups covalently in a single step, where the titanium ions can then be immobilized to enable capturing phosphopeptides. The material can be prepared using cost-effective reagents within only 4 h. Benefiting from the flexibility and filterability of cotton fibers, the material can be easily packed as a spin-tip and make the enrichment process convenient. Cotton Ti-IMAC successfully enriched phosphopeptides from protein standard digests and exhibited a high selectivity (BSA/β-casein = 1000:1) and excellent sensitivity (0.1 fmol/μL). Moreover, 2354 phosphopeptides were profiled in one LC-MS/MS injection after enriching from only 100 μg of HeLa cell digests with an enrichment specificity of up to 97.51%. Taken together, we believe that Cotton Ti-IMAC can serve as a widely applicable and robust platform for achieving large-scale phosphopeptide enrichment and expanding our knowledge of phosphoproteomics in complex biological systems.
Collapse
Affiliation(s)
- Danqing Wang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Junfeng Huang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
- CAS Key Laboratory of Regenerative Biology, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, 510530, China
- Guangzhou Laboratory, Guangzhou, Guangdong, 510005, China
| | - Haoran Zhang
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Ting-Jia Gu
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
- Lachman Institute for Pharmaceutical Development, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
- Wisconsin Center for NanoBioSystems, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA
| |
Collapse
|
3
|
Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2019-2020. MASS SPECTROMETRY REVIEWS 2022:e21806. [PMID: 36468275 DOI: 10.1002/mas.21806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
This review is the tenth update of the original article published in 1999 on the application of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2020. Also included are papers that describe methods appropriate to analysis by MALDI, such as sample preparation techniques, even though the ionization method is not MALDI. The review is basically divided into three sections: (1) general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, quantification and the use of arrays. (2) Applications to various structural types such as oligo- and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals, and (3) other areas such as medicine, industrial processes and glycan synthesis where MALDI is extensively used. Much of the material relating to applications is presented in tabular form. The reported work shows increasing use of incorporation of new techniques such as ion mobility and the enormous impact that MALDI imaging is having. MALDI, although invented nearly 40 years ago is still an ideal technique for carbohydrate analysis and advancements in the technique and range of applications show little sign of diminishing.
Collapse
Affiliation(s)
- David J Harvey
- Nuffield Department of Medicine, Target Discovery Institute, University of Oxford, Oxford, UK
- Department of Chemistry, University of Oxford, Oxford, Oxfordshire, United Kingdom
| |
Collapse
|
4
|
Xin M, You S, Wu J, Xu Y, Li C, Zhu B, Shen J, Chen Z, Dang L, Dan W, Zhang X, Sun S. Evaluation of absorbent cotton for glycopeptide enrichment. Anal Bioanal Chem 2022; 414:8245-8253. [PMID: 36181511 DOI: 10.1007/s00216-022-04353-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/30/2022]
Abstract
Selecting proper and efficient glycopeptide enrichment approaches are essential for mass spectrometry-based glycoproteomics since glycopeptides are usually with microheterogeneity and low abundance in most biological samples. Herein, we introduced a cotton hydrophilic interaction liquid chromatography (HILIC) approach for large-scale glycopeptide enrichment with 80% acetonitrile/1% trifluoroacetic acid as the optimal sample loading buffer. The comparison of cotton HILIC with Venusil HILIC and mixed anion-exchange (MAX) approaches indicated that cotton HILIC was superior in overall glycopeptide enrichment, whereas Venusil HILIC preferred in complex glycan structures and MAX performed better with high mannose glycans. Exploration of capacity and recovery rate of cotton HILIC illustrated that 5mg cotton packed in a 200μL tip achieved a reasonable glycopeptide enrichment performance (~6% recovery) from ~0.5mg peptides. In conclusion, cotton HILIC can be used as an optional glycopeptide enrichment approach in glycosylation analysis with its specific merit.
Collapse
Affiliation(s)
- Miaomiao Xin
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China.,South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, 38925, Vodnany, Czech Republic
| | - Shanshan You
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Jingyu Wu
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Yintai Xu
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Cheng Li
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Bojing Zhu
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Jiechen Shen
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Zexuan Chen
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Liuyi Dang
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Wei Dan
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China
| | - Xinwen Zhang
- Department of Medical Genetics, Xi'an Fourth Hospital, Xi'an, Shaanxi Province, 710004, People's Republic of China
| | - Shisheng Sun
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, 710069, People's Republic of China.
| |
Collapse
|