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Zhao X, Niu Y, Zhao C, Li Z, Li K, Qin X. Simplified Synthesis of Poly(ethyleneimine)-Modified Silica Particles and Their Application in Oligosaccharide Isolation Methods. Int J Mol Sci 2024; 25:9465. [PMID: 39273411 PMCID: PMC11395661 DOI: 10.3390/ijms25179465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 08/20/2024] [Accepted: 08/28/2024] [Indexed: 09/15/2024] Open
Abstract
There are great challenges in the field of natural product isolation and purification and in the pharmacological study of oligosaccharide monomers. And these isolation and purification processes are still universal problems in the study of natural products (NPs), traditional Chinese medicine (TCM), omics, etc. The same polymer-modified materials designed for the special separation of oligosaccharides, named Sil-epoxy-PEI and Sil-chloropropyl-PEI, were synthesized via two different methods and characterized by scanning electron microscopy combined with energy spectrum analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis, zeta potential as well as surface area analysis, etc. Several nucleotide/nucleoside molecules with different polarities and selectivities were successfully isolated in our laboratory using stainless-steel columns filled with the synthesized material. In addition, the separation of saccharide probes and oligosaccharides mixtures in water extracts of Morinda officinalis were compared in HILIC mode. The results showed that the resolution of separations for the representative analytes of the Sil-epoxy-PEI column was higher than for the Sil-chloropropyl-PEI column, and the developed stationary phase exhibited improved performance compared to hydrothermal carbon, amide columns and other HILIC materials previously reported.
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Affiliation(s)
- Xingyun Zhao
- Modern Research Center for Traditional Chinese Medicine, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, China
| | - Yifan Niu
- Modern Research Center for Traditional Chinese Medicine, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, China
| | - Chengxiao Zhao
- Modern Research Center for Traditional Chinese Medicine, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, China
| | - Zhenyu Li
- Modern Research Center for Traditional Chinese Medicine, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, China
| | - Ke Li
- Modern Research Center for Traditional Chinese Medicine, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, China
| | - Xuemei Qin
- Modern Research Center for Traditional Chinese Medicine, The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Key Laboratory of Effective Substances Research and Utilization in TCM of Shanxi Province, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, China
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Shen Q, Tang C, Xu X, Liu G, Shao S, Yao W, Dong S. Novel PEI/Zein core-shell composite as mixed-mode stationary phase for high performance liquid chromatography. J Chromatogr A 2024; 1730:465159. [PMID: 39025022 DOI: 10.1016/j.chroma.2024.465159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/03/2024] [Accepted: 07/09/2024] [Indexed: 07/20/2024]
Abstract
Based on the adhesion of polyethyleneimine (PEI), a novel PEI/zein co-modified core-shell stationary phase (PEI/Zein@SiO2) was prepared by doping zein to form a composite modification layer. The stationary phase achieved effective separation of nucleosides, bases and antibiotics in hydrophilic interaction mode on account of the hydrophilic groups of composite coating. With the hydrophobicity of zein, the flavones could be separated in reversed-phase mode. In short, the separation and analysis of hydrophilic/hydrophobic compounds were accomplished excellently by the PEI/Zein@SiO2 column with mixed double mode. The prepared chromatographic stationary phase not only avoided the dissolution of zein, but also covered the strong adsorption of some analytes caused by silica hydroxyl groups on the surface of silica spheres. The morphological structure and specific surface area of the material were reflected by various characterization techniques. Hydrophilic/hydrophobic compounds were used as tested analytes to research separation performance and retention mechanisms of PEI/Zein@SiO2 column. The stability and reproducibility of the PEI/Zein@SiO2 stationary phase were satisfied. Therefore, the modification of zein could improve the separation selectivity of stationary phase effectively for complex samples, which had the potential to be one of the significant potential application materials in stationary phase packing.
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Affiliation(s)
- Qing Shen
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Cong Tang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xiaomeng Xu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Guangxiu Liu
- Key Laboratory of Extreme Environmental Microbial Resources and Engineering of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, PR China
| | - Shijun Shao
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
| | - Wenxiu Yao
- Gansu Police College, Lanzhou 730046, PR China.
| | - Shuqing Dong
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China.
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Wei X, Wen X, Zheng H, Zhang Y, Jia Q. Facile synthesis of Fe 3+ immobilized magnetic polydopamine-polyethyleneimine composites for phosphopeptide enrichment. J Chromatogr A 2024; 1719:464752. [PMID: 38382211 DOI: 10.1016/j.chroma.2024.464752] [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: 01/26/2024] [Revised: 02/08/2024] [Accepted: 02/17/2024] [Indexed: 02/23/2024]
Abstract
As one of the most common post-translational modification of proteins, protein phosphorylation plays a vital role in many physiological processes. The enrichment of phosphopeptides is highly important before the mass spectrometry detection since phosphopeptides are susceptible to interferences from high-abundance non-phosphopeptides. In this study, we designed a novel magnetic composite (Fe3O4@PDA-PEI-Fe3+) for phosphopeptide enrichment with a facile protocol. The developed Fe3O4@PDA-PEI-Fe3+ is a marvelous material with multiple functional groups, and can effectively enrich phosphopeptides through the synergistic effect of three mechanisms, i.e., immobilized metal ion affinity chromatography raised form Fe3+, electrostatic interaction between amine and phosphate groups, and hydrogen bond between the hydrogen atoms of amine groups and oxygen atoms of phosphate groups. Combined with mass spectrometry, the material shows excellent enrichment performance, high sensitivity (0.4 fmol), good selectivity (β-casein:BSA= 1:500, w:w), and stable reusability (at least 5 cycles). In addition, the material was successfully applied to enrich phosphopeptides from skim milk and human saliva samples, implying that it is an ideal adsorbent for the phosphopeptide enrichment in complex biological samples and provides valuable insights into the field of phosphopeptide analysis.
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Affiliation(s)
- Xinzhuang Wei
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Xue Wen
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China; Department of Pharmacy, Tianjin Hospital, No. 406 Jiefang South Road, Hexi District, Tianjin 300211, China
| | - Haijiao Zheng
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Yang Zhang
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China.
| | - Qiong Jia
- College of Chemistry, Jilin University, Changchun 130012, China.
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