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Chen T, Jia J, Shen C, Wang S, Li H, Ma Y, Song Z, Lu W, Li A, Li Y. UV-based solvent system screening for high-speed counter-current chromatography fractionation of compounds with similar UV absorption from complex samples followed by preparative HPLC purification: Flavonoids from barley seedlings as sample. J Sep Sci 2023; 46:e2300558. [PMID: 37817348 DOI: 10.1002/jssc.202300558] [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: 08/02/2023] [Revised: 09/09/2023] [Accepted: 09/28/2023] [Indexed: 10/12/2023]
Abstract
This article proposes a solvent system screening strategy for compounds with similar UV absorption in complex samples by UV spectrophotometer. There is no need to calculate the partition coefficient value of each compound, only the partition coefficient of the whole sample. The partition coefficient value should be close to 1 in order to obtain as many high-speed counter-current chromatography fractions as possible. Then, preparative HPLC was used to purify the high-speed counter-current chromatography fractions. Based on the above strategy, seven c-glycosyl flavonoids and an amino acid were successfully obtained from barley seedlings through high-speed counter-current chromatography fractionation with ethyl acetate/n-butanol/water (8:2:10, v:v:v) system followed by preparative HPLC purification. The research shows that high-speed counter-current chromatography could be well developed as a tool for fractionation before purification, and greatly improves the separation efficiency.
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Affiliation(s)
- Tao Chen
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
- Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Jing Jia
- Dongying Center for Industrial Products Inspection and Metrological Verification, Dongying Adminstration for Market Regulation, Dongying, P. R. China
| | - Cheng Shen
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Shuo Wang
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
| | - Hongmei Li
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
- Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Yumei Ma
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
- Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Zhibo Song
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
- Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Weihang Lu
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
- Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Aijing Li
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
- Savaid Medical School, University of the Chinese Academy of Sciences, Beijing, P. R. China
| | - Yulin Li
- Characteristic Biology Resources Research Center, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, P. R. China
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Wysor SK, Kenneth Marcus R. Alleviation of the necessity for supernatant prefiltering in the protein a recovery of Monoclonal antibodies from Chinese hamster ovary cell cultures. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1230:123919. [PMID: 37950970 DOI: 10.1016/j.jchromb.2023.123919] [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: 09/22/2023] [Revised: 10/18/2023] [Accepted: 10/29/2023] [Indexed: 11/13/2023]
Abstract
Protein A (ProA) chromatography is a mainstay in the analytical and preparative scale isolation/purification of monoclonal antibodies (mAbs). One area of interest is continuous processing or continuous chromatography, where ProA chromatography is used in the large-scale purification of mAbs. However, filtration is required prior to all ProA isolations to remove large particulates in cell culture supernatant, consisting of a mixture of cell debris, host cell contaminants, media components, etc. Currently, in-line filters are used to remove particles in the supernatant, requiring replacement over time due to fouling; regardless of the scale. Here we demonstrate the ProA isolation of unfiltered Chinese hamster ovary (CHO) cell media using capillary-channel polymer (C-CP) fiber stationary phases modified with S. aureus Protein A (rSPA). The base polymer of the analytical scale C-CP columns costs ∼$5 per 30 cm column, and when modified with ProA, the base cost is ∼$25 per 30 cm column, a cost-effective option in comparison to analytical-scale commercial columns. To directly sample unfiltered media, a 5 cm gap was created at the head of the C-CP column, where the large particulates are trapped, while molecular solutes flow through the capillary channels without sacrifice in analytical performance, mAb loading capacity, or backpressure increases. The binding capacity of the gap ProA C-CP column was ∼ 2 mg mL-1 of IgG per bed volume. The same analytical column could be operated after processing a total of ∼ 56 column bed volumes of supernatant (>25 analytical cycles) without the need for caustic clean-in-place processing.
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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.
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Billotto LS, Marcus RK. Comparative Analysis of Trilobal Capillary‐Channeled Polymer Fiber Columns with Superficially Porous and Monolithic Phases Towards Reversed‐Phase Protein Separations. J Sep Sci 2022; 45:3811-3826. [DOI: 10.1002/jssc.202200410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/28/2022] [Accepted: 08/05/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Lacey S. Billotto
- Department of Chemistry Biosystems Research Complex Clemson University
| | - R. Kenneth Marcus
- Department of Chemistry Biosystems Research Complex Clemson University
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Li J, Lv X, Li B, Liu L, Yu C, Cheng H, Zhou J, Zhu Y, Ma H. Identification of peptides of cinobufacini by gel filter chromatography and peptidomics. J Sep Sci 2022; 45:2845-2854. [PMID: 35675540 DOI: 10.1002/jssc.202200133] [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: 02/18/2022] [Revised: 04/28/2022] [Accepted: 05/31/2022] [Indexed: 11/06/2022]
Abstract
Aqueous extract of toad skin (named as Cinobufacini or Huachansu) provides plentiful sources of bioactive peptides that remain undetected and unidentified. High-resolution mass spectrometry-based peptidomics platforms have developed into a major approach to the discovery of natural peptides, with data-dependent acquisition modes providing a wealth of peptide profiling information. In this study, we used a gel- and HLB (a solid phase extraction cartridge)-based two-dimensional separation and purification system and nano-liquid chromatography-tandem mass spectrometry-based peptidomic studies with homology matching for the identification of peptides from Cinobufacini. We evaluated 232 multi-charged peptides and found several specific peptides, some of which were validated by target parallel reaction monitoring mode. These peptides are the first to be identified in Cinobufacini and are completely different from ones identified in toad venom. So, this mapping provides key peptide information for the quality control of Bufo bufo gargarizans skin and its preparation.
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Affiliation(s)
- Junxian Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Xiang Lv
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Bingxv Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Lina Liu
- The First School of Clinical Medicine, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Chengli Yu
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Haibo Cheng
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing, P. R. China
| | - Jing Zhou
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Yuyu Zhu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Hongyue Ma
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, P. R. China
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