Cited by 96Seaweed-derived Bioactive CompoundsPolysaccharides Composition and ApplicationsImmunotherapy and Immune Responses

Novel sulfated polysaccharide derived from red-tide microalga Gyrodinium impudicum strain KG03 with immunostimulating activity in vivo

Yim, Joung Han, Son, Eunwha, Pyo, Suhkneung, Lee, Hong Kum·2005·Marine Biotechnology

Abstract

The high-sulfate-containing exopolysaccharide p-KG03 is produced by the red-tide microalga Gyrodinium impudicum strain KG03. The immunostimulatory effects of this sulfated exopolysaccharide were investigated by isolating peritoneal macrophages from mice 10 or 20 days after they had received a single dose of p-KG03 (100 or 200 mg/kg body weight). The cytotoxicity of the isolated macrophages for B16 tumor cells was tested, as B16 tumor cells are sensitive to tumor necrosis factor alpha (TNF-alpha) and nitric oxide. The activities of natural killer cells from the p-KG03-treated mice against YAC-1 mouse lymphoma cells were also tested. The nonspecific immune functions mediated by natural killer cells and macrophages were increased by treatment with p-KG03 in vivo. These results suggest that p-KG03 has immunostimulatory effects and enhances the tumoricidal activities of macrophages and NK cells in vivo. In addition, p-KG03 treatment increased the plaque-forming cell response to sheep red blood cells, as well as the levels of IgM and IgG Exposure to p-KG03 also increased the production by macrophages of cytokines, such as interleukins -1beta and -6, and TNF-alpha. This is the first report of a marine microalgal sulfated polysaccharide having immunostimulatory activities. The p-KG03 polysaccharide may be useful for the development of biotechnological and pharmaceutical products that incorporate bioactive marine exopolysaccharides.

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Crossref · 10.1007/s10126-004-0404-6

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  • The main mechanism of polysaccharides cytotoxic effect is activation of the innate immune system.

    “The main mechanism of action of polysaccharides cytotoxic effect is the activation of the innate immune system [165,166,167,168], leading to attraction of macrophages and natural killer cells to the target site and production of tumoricidal cytokines [166,169,170,171].”

    From Marine Natural Products: A Source of Novel Anticancer Drugs (2019) · cites this paper as [166]

  • Activation of the innate immune system by polysaccharides leads to attraction of macrophages and natural killer cells to the target site and production of tumoricidal cytokines.

    “The main mechanism of action of polysaccharides cytotoxic effect is the activation of the innate immune system [165,166,167,168], leading to attraction of macrophages and natural killer cells to the target site and production of tumoricidal cytokines [166,169,170,171].”

    From Marine Natural Products: A Source of Novel Anticancer Drugs (2019) · cites this paper as [166]

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Authors
Yim, J. H., Son, E., Pyo, S., & Lee, H. K.
Affiliations
  • Korea Polar Research Institute (KR)
  • Sungkyunkwan University (KR)
Corresponding author
Lee, Hong Kum
Venue
Marine Biotechnology
Published
2005-06-04
Volume
7
Issue
4
Pages
331-338
ISSN
  • 1436-2228 (ISSN-L)
  • 1436-2236
OpenAlex
W2092916973
Cited by
96
References
36
Citations by year
2026: 1 · 2025: 5 · 2024: 6 · 2023: 6 · 2022: 6 · 2021: 7 · 2020: 6 · 2019: 11 · 2018: 4 · 2017: 4 · 2016: 2 · 2015: 4 · 2014: 4 · 2013: 6 · 2012: 2
FWCI
2.01
Type
journal article
Language
en
Open access
closed
Locations
  • Marine Biotechnology (publishedVersion)
  • PubMed (publishedVersion)
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 › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
sulfated polysaccharides, exopolysaccharides, immune enhancement, macrophages, natural killer cells, B16 melanoma, YAC-1 lymphoma, cytokine production, TNF-α, interleukin-6, IL-1β, IgM and IgG antibodies, plaque-forming cells
MeSH terms
Animals, Dinoflagellida, Enzyme-Linked Immunosorbent Assay, Hydrogen Peroxide, Immunoglobulin G, Immunoglobulin M, Immunization, Killer Cells, Natural, Macrophages, Polysaccharides, Sulfuric Acid Esters, Cytokines, Cell Line, Tumor, Mice

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