| Docosahexaenoic acid (DHA), a primary tumor suppressive omega-3 fatty acid, inhibits growth of colorectal cancer independent of p53 mutational status. | |
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MedLine Citation:
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PMID: 17640164 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Human colon carcinoma COLO 205, carrying wild type p53, grown subcutaneously in athymic mice was inhibited 80% by a high fat menhaden oil diet containing a mixture of omega-3 fatty acids compared to the low fat corn oil diet containing omega-6 fatty acids. Feeding a high fat diet of golden algae oil containing docosahexaenoic acid (DHA) as the sole long chain omega-3 fatty acid resulted in 93% growth inhibition. Similar findings were previously reported for WiDr colon carcinoma containing mutated p53 (His237). In vitro, 125 muM DHA inhibited COLO 205 growth by 81%, WiDr by 42%, while eicosapentaenoic acid (EPA) marginally inhibited growth of both lines by approximately 30%. DHA inhibited cell proliferation by 41% in WiDr but did not significantly inhibit proliferation in COLO 205. Cell cycle analysis revealed that DHA arrested cell cycle at Resting/Gap 1 (G0/G1 phase) in WiDr and at Gap 2/Mitosis (G2/M) phase in COLO 205. DHA induced apoptosis in COLO 205 but not in WiDr, and EPA did not induce apoptosis in either line. Taken together, these findings suggest DHA is the primary tumor suppressive omega-3 fatty acid in vivo and in vitro and inhibits cancer growth by p53 dependent and independent pathways, while the marginal inhibition by EPA is p53 independent. |
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Authors:
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Taeko Kato; Nicole Kolenic; Ronald S Pardini |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Nutrition and cancer Volume: 58 ISSN: 0163-5581 ISO Abbreviation: Nutr Cancer Publication Date: 2007 |
Date Detail:
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Created Date: 2007-07-20 Completed Date: 2007-10-09 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7905040 Medline TA: Nutr Cancer Country: United States |
Other Details:
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Languages: eng Pagination: 178-87 Citation Subset: IM |
Affiliation:
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Biochemistry, College of Agriculture, Biotechnology and Natural Resources, University of Nevada, Reno, NV 89557, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algae
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chemistry Animals Apoptosis / drug effects* Cell Cycle / drug effects* Cell Proliferation / drug effects Colorectal Neoplasms / drug therapy* Docosahexaenoic Acids / administration & dosage, pharmacology* Fatty Acids, Omega-3 / administration & dosage, pharmacology Fatty Acids, Unsaturated / administration & dosage, pharmacology Humans Mice Mice, Inbred BALB C Tumor Suppressor Protein p53 / antagonists & inhibitors*, metabolism |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids, Omega-3; 0/Fatty Acids, Unsaturated; 0/Tumor Suppressor Protein p53; 25167-62-8/Docosahexaenoic Acids |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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