ABSTRACT
Receptors of plant polysaccharides and their signaling pathways have become a hotspot of polysaccharide activity research. As immunomodulators, polysaccharides have attracted much attention due to their immunomodulatory effects mediated by cell surface receptors. Polysaccharide receptors mainly include C-type lectin receptor family, mannose receptor family (MR), Toll-like receptor family (TLR), complement receptor 3 (CR3), scavenger receptor and so on, and these receptors play an important role in the recognition between polysaccharides and cells, which is closely related to polysaccharides activities, such as enhancing cellular immune function, regulating the secretion of cytokines, having immunomodulatory and antineoplastic effects. In this paper, polysaccharide receptors types, biological functions and signal transduction pathways are reviewed, it will be helpful to elucidate the pharmacological activity mechanism of plant polysaccharides and provide theoretical reference for the comprehensive development of polysaccharide drugs.
ABSTRACT
AIM: To establish a method for determing polysaccaride content of Radix Hedysari(Hedysarum Polybotrys Hand-Mazz). METHODS: To determine content of Radix Hedysari polysaccaride by HPLC and ELSD. RESULTS: The composes of Radix Hedysari polysaccaride Ⅰ、Ⅱ、Ⅲ、Ⅳ are all Rhamnose、Arabinose、Xylose、Glucose、Galactose,the average content of polysaccharides is 25.34%、24.23%、15.08%、17.24%. CONCLUSION: The contents of Radix Hedysari polysaccaride in Radix Hedysari can be determined by HPLC.