Cited by 275Seaweed-derived Bioactive CompoundsCell death mechanisms and regulationNatural product bioactivities and synthesis

Fucoidan present in brown algae induces apoptosis of human colon cancer cells

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Kim, Eun Ji, Park, So Young, Lee, Jae-Yong, Park, Jung Han Yoon·2010·BMC Gastroenterology

Abstract

BACKGROUND: Fucoidan is a sulfated polysaccharide found in brown algae; it has been shown to exhibit a number of biological effects, including anti-tumor effects. In this study, we evaluated the effects of fucoidan on apoptosis in HT-29 and HCT116 human colon cancer cells. METHODS: HT-29 and HCT116 cells were cultured with various concentrations of fucoidan (0 - 20 microg/mL). Apoptosis was assayed via Hoechst staining and Annexin V staining followed by flow cytometric analysis. Western blot analyses and JC-1 staining were conducted to determine the levels of apoptosis-regulating proteins and mitochondrial membrane permeability, respectively. RESULTS: Fucoidan induced substantial reductions in viable cell numbers and apoptosis of HT-29 and HCT116 cells in a dose-dependent manner. In HT-29 cells, fucoidan also increased the levels of cleaved caspases-8, -9, -7, and -3, and cleaved poly (ADP-ribose) polymerase (PARP) levels. The levels of the X-linked inhibitor of apoptosis protein and survivin were attenuated in the fucoidan-treated cells. Fucoidan was also shown to enhance mitochondrial membrane permeability, as well as the cytochrome c and Smac/Diablo release from the mitochondria. Fucoidan increased the levels of the Bak and truncated Bid proteins, but reduced the levels of Mcl-1. Additionally, fucoidan increased the levels of the tumor necrosis factor-related apoptosis-inducing ligand, Fas and death receptor 5 proteins. The caspase-8 and -9 inhibitors Z-IETD-FMK and Z-LEHD-FMK induced a reduction in fucoidan-mediated apoptosis. Caspase-8 inhibitor inhibited the fucoidan-induced cleavage of Bid, caspases-9 and -3, and PARP. CONCLUSION: The findings of this study indicate that fucoidan induces apoptosis in HT-29 and HCT116 human colon cancer cells, and that this phenomenon is mediated via both the death receptor-mediated and mitochondria-mediated apoptotic pathways. These results suggest that fucoidan may prove useful in the development of a colon cancer-preventive protocol.

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Authors
Kim, E. J., Park, S. Y., Lee, J.-Y., & Park, J. H. Y.
Affiliations
Hallym University (KR)
Corresponding author
Park, Jung Han Yoon
Venue
BMC Gastroenterology
Published
2010-08-22
Volume
10
Issue
1
Pages
96-96
ISSN
1471-230X (ISSN-L)
OpenAlex
W2160738153
Cited by
275
References
50
Citations by year
2026: 9 · 2025: 7 · 2024: 14 · 2023: 18 · 2022: 25 · 2021: 20 · 2020: 19 · 2019: 24 · 2018: 15 · 2017: 20 · 2016: 17 · 2015: 23 · 2014: 18 · 2013: 15 · 2012: 14
FWCI
22.52
Type
journal article
Language
en
Open access
Locations
  • BMC Gastroenterology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Research Foundation
  • Hallym University
  • Ministry of Knowledge Economy
  • National Research Foundation of Korea
  • Ministry of Education, Science and Technology
Topics
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Natural product bioactivities and synthesis
Keywords
fucoidan, brown algae, apoptosis, colon cancer, HT-29 cells, HCT116 cells, caspase activation, mitochondrial membrane permeability, cytochrome c release, Smac/DIABLO, Bak, Bid, Mcl-1, Fas, DR5, death receptor-mediated apoptosis, mitochondrial apoptosis, colon cancer prevention
MeSH terms
Adenocarcinoma, Phaeophyceae, Antineoplastic Agents, Cell Membrane Permeability, Cell Survival, Colonic Neoplasms, Humans, Phytotherapy, Plant Extracts, Polysaccharides, Apoptosis, HT29 Cells, Proto-Oncogene Proteins c-bcl-2, Cytochromes c, Cell Line, Tumor, Cell Proliferation

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