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dc.contributor.authorLi, Junhui
dc.contributor.authorLi, Shan
dc.contributor.authorWu, Limei
dc.contributor.authorYang, Huifang
dc.contributor.authorWei, Chaoyang
dc.contributor.authorDing, Tian
dc.contributor.authorLinhardt, Robert J.
dc.contributor.authorZheng, Xiaoliang
dc.contributor.authorYe, Xingqian
dc.contributor.authorChen, Shiguo
dc.identifier.citationUltrasound-assisted fast preparation of low molecular weight fucosylated chondroitin sulfate with antitumor activity, J. Li, S. Li, H. Yang, C. Wei, L. Yan, T. Ding, R. J. Linhardt, X. Zheng, X. Ye, S. Chen, Carbohydrate Polymers, 209, 82-91, 2019.
dc.descriptionCarbohydrate Polymers, 209, 82-91
dc.descriptionNote : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
dc.description.abstractFucosylated chondroitin sulfate from sea cucumber Isostichopus badionotus (fCS-Ib) was depolymerized with an ultrasound-accelerated, metal-free Fenton chemistry, relying on H2O2/ascorbic acid redox system. Fragments of different molecular weights were obtained at different reaction temperatures, ascorbic acid concentrations and ultrasonic intensities. The structures of two typical depolymerized fragments were evaluated using high-performance liquid chromatography (HPLC), infrared spectroscopy (IR), and nuclear magnetic resonance spectroscopy (NMR). The results showed that ultrasound enhanced the degradation efficiency of H2O2/ascorbic acid system mainly by disaggregating sulfated polysaccharide clusters and that free radicals induced depolymerization with no significant chemical changes in the backbone of fCS-Ib and with no obvious loss of fucose branches. The antitumor activity, using A549 lung cancer cells, showed that the ultrasound treated low molecular weight sulfated fragment enhanced proliferation-inhibitory and anti-migration effects, compared to native fCS-Ib. This was different from the anticoagulant activity of fCS-Ib, suggesting that the molecular weight change may cause a conformational transition and affect biological activity. We propose that combining ultrasound with non-metal Fenton chemistry as an effective method to prepare low molecular weight fCS fragments with potential applications as functional foods, antitumor drugs, and that these fCS fragments display negligible bleeding risk.
dc.description.sponsorshipNational Natural Science Foundation of China
dc.relation.ispartofThe Linhardt Research Labs Online Collection
dc.relation.ispartofRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofCarbohydrate Polymers
dc.subjectChemistry and chemical biology
dc.subjectChemical and biological engineering
dc.subjectBiomedical engineering
dc.titleUltrasound-assisted fast preparation of low molecular weight fucosylated chondroitin sulfate with antitumor activity
dc.rights.holderIn Copyright : this Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.relation.departmentThe Linhardt Research Labs.
dc.relation.departmentThe Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies (CBIS)

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