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  • Title: Analysis of Heparan sulfate/heparin from Colla corii asini by liquid chromatography-electrospray ion trap mass spectrometry.
    Author: Du J, Liu S, Liang Q, Lin J, Jiang L, Chen F, Wei Z.
    Journal: Glycoconj J; 2019 Jun; 36(3):211-218. PubMed ID: 31016560.
    Abstract:
    Colla corii asini (CCA) made from donkey-hide has been widely used as a health-care food and an ingredient of traditional Chinese medicine. Heparan sulfate (HS)/heparin is a structurally complex class of glycosaminoglycans (GAGs) that have been implicated in a wide range of biological activities. However, their presence within CCA, and their possible structural characteristics, were previously unknown. In this study, GAG fractions containing HS/heparin were isolated from CCA and their disaccharide compositions were analyzed by high sensitivity liquid chromatography-ion trap/time-of-flight mass spectrometry (LC-MS-ITTOF). This revealed that, in addition to the eight commonly seen HS disaccharides, the four rare N-unsubstituted disaccharides were also detected in significant quantities. The disaccharide compositions varied significantly between HS/heparin fractions indicating chains with differing domain structures. This novel structural information may lead to a better understanding of the biological activities (i.e. anticoagulation and antitumor action) of CCA.
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