Abstract
In this study, a water-soluble polysaccharide from Eucommia folium was extracted by hot water and purified using Sephadex G-200 gel columns. The results showed that the purified fraction (EFP) has a molecular weight of 9.98 × 105 Da and consisted of rhamnose, arabinose, galactose, glucose, mannose, xylose, galacturonic acid, and glucuronic acid (molar ratio: 0.226: 1.739: 2.183: 1: 0.155: 0.321: 0.358: 0.047). The combination of infrared spectroscopy and NMR analysis proved that EFP is an acidic polysaccharide whose main chain consists of α-L-Araf-(1 → , → 3,5)-α-Araf-(1 → , → 3)-β-Galp-(1 → , → 3,6)-β-Glcp-(1 → , → 2)-α-D-Manp-(1 → , → 4)-α-GalpA-(1 → , → 2,4)-α-Rhap-(1 → . In addition, the in vivo antitumoral activity of EFP was studied using a H22 tumor-bearing mice model. EFP effectively inhibited tumor growth in mice following intragastric administration. By Combining with the results of the apoptosis assay and JC-1 staining analysis, we confirmed that EFP induces apoptosis through the mitochondrial pathway. Furthermore, cell cycle analysis demonstrated that EFP blocks the cell cycle at S phase.
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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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This research was supported by National Natural Science Foundation of China (No.31801568).
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Zhi-Qian Yan: Conceptualization, Investigation, Data curation, Writing-Original draft preparation, Writing-Reviewing and Editing. Su-Yun Ding: Methodology. Pei Chen: Software, Formal analysis. Hui-Ping Liu: Resources, Project administration, Funding acquisition. Meng-Li Chang: Software, Validation. Shu-Yuan Shi: supervised.
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Yan, ZQ., Ding, SY., Chen, P. et al. A water-soluble polysaccharide from Eucommia folium: the structural characterization and anti-tumor activity in vivo. Glycoconj J 39, 759–772 (2022). https://doi.org/10.1007/s10719-022-10086-4
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DOI: https://doi.org/10.1007/s10719-022-10086-4