title: E-configuration structures of EPA and DHA derived from Euphausia superba and their significant inhibitive effects on growth of human cancer cell lines in vitro.
abstract: 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 IC50values of Antarctic krill EPA and DHA were 14.01 and 19.94μM，while the IC50values of sturgeon liver and commercial fish EPA and DHA were 81.45, 73.13, 82.11 and 75.31μM, 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.
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
authors.forename: Weilong
authors.initials: W
authors.lastname: Zheng
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
authors.forename: Xudong
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Cao
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
authors.forename: Bowen
authors.initials: B
authors.lastname: Yang
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Mu
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China.
authors.forename: Yuesheng
authors.initials: Y
authors.lastname: Dong
authors.affiliation: School of Life Science and Biotechnology, Dalian University of Technology, 2 Linggong Road, Dalian 116024, PR China. Electronic address: zhlxiu@dlut.edu.cn.
authors.forename: Zhilong
authors.initials: Z
authors.lastname: Xiu
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D004281:Docosahexaenoic Acids / Q000737:chemistry* / Q000494:pharmacology*; D015118:Eicosapentaenoic Acid / Q000737:chemistry* / Q000494:pharmacology*; D033201:Euphausiacea / Q000737:chemistry*; D005395:Fish Oils / Q000494:pharmacology; D006801:Humans; D066298:In Vitro Techniques; D061986:MCF-7 Cells; D015394:Molecular Structure; D013059:Spectrum Analysis, Raman
chemical_list: D005395:Fish Oils; D004281:Docosahexaenoic Acids; D015118:Eicosapentaenoic Acid
keywords: Antarctic krill; Cancer cell lines; DHA; E-configuration; EPA; Inhibitive effect