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Anticancer Activity of the Marine Triterpene Glycoside Cucumarioside A-2 in Human Prostate Cancer Cells.
Mar Drugs
December 2023
Department of Oncology, Hematology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald Tumorzentrum-University Cancer Center Hamburg (UCCH), University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
Despite recent advances in the treatment of metastatic castration-resistant prostate cancer (CRPC), treatment is inevitably hampered by the development of drug resistance. Thus, new drugs are urgently needed. We investigated the efficacy, toxicity, and mechanism of action of the marine triterpene glycoside cucumarioside A-2 (CA-2) using an in vitro CRPC model.
View Article and Find Full Text PDFNew Rare Triterpene Glycosides from Pacific Sun Star, , and Their Anticancer Activity.
Mar Drugs
December 2023
G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, Pr. 100-let Vladivostoku 159, 690022 Vladivostok, Russia.
Six previously unknown triterpene glycosides, pacificusosides L-Q (-), and two previously known triterpene glycosides, cucumariosides B () and A (), were isolated from an alcoholic extract of Pacific sun star, . The structures of - were determined using 1D and 2D NMR, ESIMS, and chemical modifications. Compound is a rare type of triterpene glycoside with non-holostane aglycon, having a linear trisaccharide carbohydrate chain.
View Article and Find Full Text PDFSulfated Triterpene Glycosides from the Far Eastern Sea Cucumber : Djakonoviosides C, D, E, and F; Cytotoxicity against Human Breast Cancer Cell Lines; Quantitative Structure-Activity Relationships.
Mar Drugs
November 2023
G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Pr. 100-letya Vladivostoka 159, 690022 Vladivostok, Russia.
Four new mono- and trisulfated triterpene penta- and tetraosides, djakonoviosides C (), D (), E (), and F () were isolated from the Far Eastern sea cucumber (Cucumariidae, Dendrochirotida), along with six known glycosides found earlier in other species. The structures of unreported compounds were established on the basis of extensive analysis of 1D and 2D NMR spectra as well as by HR-ESI-MS data. The set of compounds contains six different types of carbohydrate chains including two new ones.
View Article and Find Full Text PDFIn Vitro Anticancer and Cancer-Preventive Activity of New Triterpene Glycosides from the Far Eastern Starfish .
Mar Drugs
March 2022
G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Pr. 100-Let Vladivostoku 159, 690022 Vladivostok, Russia.
Sea stars or starfish (class Asteroidea) and holothurians or sea cucumbers (class Holothuroidea), belonging to the phylum Echinodermata (echinoderms), are characterized by different sets of glycosidic metabolites: the steroid type in starfish and the triterpene type in holothurians. However, herein we report the isolation of eight new triterpene glycosides, pacificusosides D−K (1−3, 5−9) along with the known cucumarioside D (4), from the alcoholic extract of the Far Eastern starfish Solaster pacificus. The isolated new compounds are closely related to the metabolites of sea cucumbers, and their structures of 1−3 and 5−9 were determined by extensive NMR and ESIMS techniques.
View Article and Find Full Text PDFVaccine Adjuvants Derived from Marine Organisms.
Biomolecules
August 2019
Department of Biochemistry, Microbiology and Biotechnology, School of Natural Sciences, Far Eastern, Federal University, Sukhanov Str., 8, Vladivostok 690091, Russia.
Vaccine adjuvants help to enhance the immunogenicity of weak antigens. The adjuvant effect of certain substances was noted long ago (the 40s of the last century), and since then a large number of adjuvants belonging to different groups of chemicals have been studied. This review presents research data on the nonspecific action of substances originated from marine organisms, their derivatives and complexes, united by the name 'adjuvants'.
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