Cited by 167Seaweed-derived Bioactive CompoundsCell death mechanisms and regulationNatural product bioactivities and synthesis

Fucoidan extract induces apoptosis in MCF-7 cells via a mechanism involving the ROS-dependent JNK activation and mitochondria-mediated pathways

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Zhang, Zhongyuan, Teruya, Kiichiro, Eto, Hiroshi, Shirahata, Sanetaka·2011·PLoS ONE

Abstract

BACKGROUND: Fucoidan extract (FE), an enzymatically digested compound with a low molecular weight, is extracted from brown seaweed. As a natural compound with various actions, FE is attractive, especially in Asian countries, for improving the therapeutic efficacy and safety of cancer treatment. The present study was carried out to investigate the anti-tumor properties of FE in human carcinoma cells and further examine the underlying mechanisms of its activities. METHODOLOGY/PRINCIPAL FINDING: FE inhibits the growth of MCF-7, MDA-MB-231, HeLa, and HT1080 cells. FE-mediated apoptosis in MCF-7 cancer cells is accompanied by DNA fragmentation, nuclear condensation, and phosphatidylserine exposure. FE induces mitochondrial membrane permeabilization (MMP) through loss of mitochondrial membrane potential (ΔΨm) and regulation of the expression of Bcl-2 family members. Release of apoptosis-inducing factor (AIF) and cytochrome c precedes MMP. AIF release causes DNA fragmentation, the final stage of apoptosis, via a caspase-independent mitochondrial pathway. Additionally, FE was found to induce phosphorylation of c-Jun N-terminal kinase (JNK), p38, and extracellular signal-regulated kinase (ERK) 1/2, and apoptosis was found to be attenuated by inhibition of JNK. Furthermore, FE-mediated apoptosis was found to involve the generation of reactive oxygen species (ROS), which are responsible for the decrease of ΔΨm and phosphorylation of JNK, p38, and ERK1/2 kinases. CONCLUSIONS/SIGNIFICANCE: These data suggest that FE activates a caspase-independent apoptotic pathway in MCF-7 cancer cells through activation of ROS-mediated MAP kinases and regulation of the Bcl-2 family protein-mediated mitochondrial pathway. They also provide evidence that FE deserves further investigation as a natural anticancer and cancer preventive agent.

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Authors
Zhang, Z., Teruya, K., Eto, H., & Shirahata, S.
Affiliations
  • Kyushu University (JP)
  • Daiichi-Sankyo (Japan) (JP)
Corresponding author
Teruya, Kiichiro
Venue
PLoS ONE
Published
2011-11-11
Volume
6
Issue
11
Pages
e27441
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2129739698
Cited by
167
References
59
Citations by year
2026: 5 · 2025: 8 · 2024: 8 · 2023: 14 · 2022: 12 · 2021: 10 · 2020: 9 · 2019: 15 · 2018: 13 · 2017: 10 · 2016: 12 · 2015: 13 · 2014: 16 · 2013: 14 · 2012: 8
FWCI
18.42
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Japan Society for the Promotion of Science (23580172)
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, apoptosis, MCF-7 cells, breast cancer, reactive oxygen species, JNK activation, MAPK signaling, mitochondrial membrane permeabilization, mitochondrial membrane potential, Bcl-2 family proteins, apoptosis-inducing factor, cytochrome c release, caspase-independent apoptosis, p38 MAPK, ERK1/2, anticancer natural compounds, brown seaweed extract
MeSH terms
Enzyme Activation, Humans, Mitochondria, Polysaccharides, Signal Transduction, Apoptosis, Reactive Oxygen Species, Cell Line, Tumor, JNK Mitogen-Activated Protein Kinases

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