Structure, enzymatic transformation and anticancer activity of branched high molecular weight laminaran from brown alga Eisenia bicyclis
Abstract
The structure of high molecular weight laminaran from brown alga Eisenia bicyclis was investigated by chemical and enzymatic methods, NMR spectroscopy and mass spectrometry. The laminaran from E. bicyclis was characterized as 1,3;1,6-β-D-glucan with the high content of 1,6-linked glucose residues (ratio of bonds 1,3:1,6=1.5:1), which are both in the branches and in the main chain of the laminaran. The degree of polymerization of fragments, building from 1,3-linked glucose residues with single glucose branches at C-6 or without it, was no more than four glucose residues. The main part of 1,3-linked glucose blocks was builded from disaccharide fragments. 1,6-Linked glucose residues were localized basically on non-reduced ends of molecules. The degree of polymerization of 1,6-linked blocks was not greater than three glucose residues. Laminaran contained laminarioligosaccharides, gentiobiose, gentiotriose and single glucose residues in the branches at the C-6. Laminaran and its products of enzymatic hydrolysis inhibited a colony formation of human melanoma SK-MEL-28 and colon cancer DLD-1 cells. It was shown that decreasing the molecular weight of native laminaran to a determined limit (degree of polymerization 9-23) and increasing the content of 1,6-linked glucose residues increased the anticancer effect. Therefore, they may be perspective antitumor agents.
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Self-citation
- Authors
- Menshova, R. V., Ermakova, S. P., Anastyuk, S. D., Isakov, V. V., Dubrovskaya, Y. V., Kusaykin, M. I., Um, B.-H., & Zvyagintseva, T. N.
- Affiliations
- Russian Academy of Sciences (RU)
- Korea Institute of Science and Technology (KR)
- Venue
- Carbohydrate Polymers
- Publisher
- Elsevier BV
- Published
- 2014-01
- Volume
- 99
- Pages
- 101-109
- ISSN
- 0144-8617 (ISSN-L)
- OpenAlex
- W2075582549
- Cited by
- 116
- References
- 20
- Citations by year
- 2026: 7 · 2025: 8 · 2024: 9 · 2023: 14 · 2022: 10 · 2021: 11 · 2020: 15 · 2019: 6 · 2018: 8 · 2017: 7 · 2016: 9 · 2015: 9 · 2014: 2 · 2013: 1
- FWCI
- 10.69
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Carbohydrate Polymers (publishedVersion)
- PubMed (publishedVersion)
- Funders
- REBR
- FEB RAS
- Topics
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
- Life Sciences › Agricultural and Biological Sciences › Food Science › Polysaccharides Composition and Applications
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Polysaccharides and Plant Cell Walls
- Keywords
- laminarin, Eisenia bicyclis, brown algae, enzymatic hydrolysis, gentiobiose, degree of polymerization, molecular weight, anticancer activity, melanoma, colon cancer, anticancer agents
- MeSH terms
- Phaeophyceae, Antineoplastic Agents, Cell Survival, Disaccharides, Glucans, Glucose, Humans, Molecular Weight, Magnetic Resonance Spectroscopy, Polysaccharides, Mass Spectrometry, Structure-Activity Relationship, Cell Line, Tumor
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