PMID- 30559077 OWN - NLM STAT- MEDLINE DCOM- 20190516 LR - 20200401 IS - 1873-2828 (Electronic) IS - 1350-4177 (Print) IS - 1350-4177 (Linking) VI - 52 DP - 2019 Apr TI - Preparation of low molecular weight heparin using an ultrasound-assisted Fenton-system. PG - 184-192 LID - S1350-4177(18)31207-0 [pii] LID - 10.1016/j.ultsonch.2018.11.016 [doi] AB - Heparin, a high-molecular weight acidic polysaccharide, has raised much interest in the field of biomedical research due to its multiple bio-functions. The anticoagulant application of heparin in routine clinical practice, however, has been limited as the large molecular size of heparin can reduce its subcutaneous bioavailability and lead to severe adverse consequences such as thrombocytopenia. Here, we report a highly efficient and convenient method to depolymerize high-molecular weight, unfractionated heparin (UFH), into low molecular weight heparin (LMWH) by combining physical ultrasonic treatment with the chemical Fenton reaction, referred to as sono-Fenton. We found that this combination treatment synergistically degraded UFH into a LMWH of 4.87 kDa within 20 min. We characterized the mechanism of sono-Fenton heparin degradation through multiple approaches, including HPLC-SAX, disaccharide composition, FT-IR, NMR and top-down analysis, and found that the uronic acid residue in heparin was the most susceptible site attacked by OH radicals produced in the sono-Fenton process. Importantly, the LMWH prepared by this method had significantly higher anticoagulant activity than UFH and other LMWHs. This approach represents an effective method to produce heparin with improved activity and should be potentially useful for heparin production in the pharmaceutical industry. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Zhi, Zijian AU - Zhi Z AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China. FAU - Li, Junhui AU - Li J AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China. FAU - Chen, Jianle AU - Chen J AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China; Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA. FAU - Li, Shan AU - Li S AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China. FAU - Cheng, Huan AU - Cheng H AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China. FAU - Liu, Donghong AU - Liu D AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China. FAU - Ye, Xingqian AU - Ye X AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China. FAU - Linhardt, Robert J AU - Linhardt RJ AD - Center for Biotechnology & Interdisciplinary Studies, Department of Chemistry & Chemical Biology, Rensselaer Polytechnic Institute, Biotechnology Center 4005, Troy, NY 12180, USA. Electronic address: linhar@rpi.edu. FAU - Chen, Shiguo AU - Chen S AD - Zhejiang Key Laboratory for Agro-Food Processing, Department of Food Science and Nutrition, Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China. Electronic address: chenshiguo210@163.com. LA - eng GR - R01 GM038060/GM/NIGMS NIH HHS/United States GR - R01 HL094463/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20181120 PL - Netherlands TA - Ultrason Sonochem JT - Ultrasonics sonochemistry JID - 9433356 RN - 0 (Anticoagulants) RN - 0 (Fenton's reagent) RN - 0 (Heparin, Low-Molecular-Weight) RN - BBX060AN9V (Hydrogen Peroxide) RN - E1UOL152H7 (Iron) SB - IM MH - Anticoagulants/chemistry/pharmacology MH - Heparin, Low-Molecular-Weight/*chemistry/pharmacology MH - Humans MH - Hydrogen Peroxide/*chemistry MH - Hydrogen-Ion Concentration MH - Iron/*chemistry MH - Polymerization MH - Temperature MH - *Ultrasonic Waves PMC - PMC6475493 MID - NIHMS1516786 OTO - NOTNLM OT - Anticoagulant activity OT - Depolymerization OT - Heparin OT - Sono-Fenton EDAT- 2018/12/19 06:00 MHDA- 2019/05/17 06:00 PMCR- 2020/04/01 CRDT- 2018/12/19 06:00 PHST- 2018/08/08 00:00 [received] PHST- 2018/11/13 00:00 [revised] PHST- 2018/11/19 00:00 [accepted] PHST- 2018/12/19 06:00 [pubmed] PHST- 2019/05/17 06:00 [medline] PHST- 2018/12/19 06:00 [entrez] PHST- 2020/04/01 00:00 [pmc-release] AID - S1350-4177(18)31207-0 [pii] AID - 10.1016/j.ultsonch.2018.11.016 [doi] PST - ppublish SO - Ultrason Sonochem. 2019 Apr;52:184-192. doi: 10.1016/j.ultsonch.2018.11.016. Epub 2018 Nov 20.