Acetylated Triterpene Glycosides and Their Biological Activity from Holothuroidea Reported in the Past Six Decades

Loading...
Thumbnail Image
Date
2016-08
Authors
Bahrami, Yadollah
Franco, Christopher Milton
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Rights
Copyright © 2016 by the authors; licensee MDPI, Basel, Switzerland.
Rights Holder
The authors; licensee MDPI, Basel, Switzerland.
Abstract
Sea cucumbers have been valued for many centuries as a tonic and functional food, dietary delicacies and important ingredients of traditional medicine in many Asian countries. An assortment of bioactive compounds has been described in sea cucumbers. The most important and abundant secondary metabolites from sea cucumbers are triterpene glycosides (saponins). Due to the wide range of their potential biological activities, these natural compounds have gained attention and this has led to their emergence as high value compounds with extended application in nutraceutical, cosmeceutical, medicinal and pharmaceutical products. They are characterized by bearing a wide spectrum of structures, such as sulfated, non-sulfated and acetylated glycosides. Over 700 triterpene glycosides have been reported from the Holothuroidea in which more than 145 are decorated with an acetoxy group having 38 different aglycones. The majority of sea cucumber triterpene glycosides are of the holostane type containing a C18 (20) lactone group and either D7(8) or D9(11) double bond in their genins. The acetoxy group is mainly connected to the C-16, C-22, C-23 and/or C-25 of their aglycone. Apparently, the presence of an acetoxy group, particularly at C-16 of the aglycone, plays a significant role in the bioactivity; including induction of caspase, apoptosis, cytotoxicity, anticancer, antifungal and antibacterial activities of these compounds. This manuscript highlights the structure of acetylated saponins, their biological activity, and their structure-activity relationships.
Description
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
Keywords
acetylated triterpene glycosides, saponins, sea cucumbers, Holothuroidea, anticancer, antifungal, immunomodulatory, holothurin, holothurians
Citation
Bahrami Y, Franco CMM. Acetylated Triterpene Glycosides and Their Biological Activity from Holothuroidea Reported in the Past Six Decades. Benkendorff K, ed. Marine Drugs. 2016;14(8):147. doi:10.3390/md14080147.