Journal
PROSTAGLANDINS LEUKOTRIENES AND ESSENTIAL FATTY ACIDS
Volume 117, Issue -, Pages 47-53Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.plefa.2017.01.005
Keywords
Antarctic krill; DHA; EPA; E-configuration; Inhibitive effect; Cancer cell lines
Funding
- National High Technology Research and Development Program (863 Program Project) of China [2011AA090800]
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Many bioactive components such as poly-unsaturated fatty acids (e.g. EPA and DHA), phospholipids and astaxanthin are known in Antarctic krill (Euphausia superba) oil. The krill DHA and EPA are generally considered to be similar to natural ones. However, two chemical compounds which were separated from Antarctic krill oil and identified as EPA and DHA by HRESIMS and NMR acted much more effective inhibitive activities on growth of several cell lines (U937, K562, SMMC-7721, PC-3, MDA-MB-231, HL60 and MCF-7) than those from sturgeon liver and commercial fish oil. Taking MCF-7 as an example, the IC50 values of Antarctic krill EPA and DHA were 14.01 and 19.94 mu M, while the IC50 values of sturgeon liver and commercial fish EPA and DHA were 81.45, 73.13, 82.11 and 75.31 mu M, respectively. Raman spectra revealed that the Antarctic krill EPA and DHA have E-configuration structures, which were different from those in commercial fish oil. Additionally, the Antarctic krill EPA and DHA had no effects on human normal liver cell line HL7702. These results indicated that the Antarctic krill E-EPA and E-DHA had a great prospect in cancer therapy.
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