NDLI: Cytotoxic effect of conjugated trienoic fatty acids on mouse tumor and human monocytic leukemia cells

Content Provider	Springer Nature Link
Author	Suzuki, Rikako guchi, Ryoko Ota, Tomoki Abe, Masayuki Miyashita, Kazuo Kawada, Teruo
Copyright Year	2001
Abstract	The cytotoxicity of fatty acids from seed oils containing conjugated linolenic acids (CLN) was studied. Fatty acids from pomegranate, tung, and catalpa were cytotoxic to human monocytic leukemia cells at concentrations exceeding 5 μM for pomegranate and tung and 10 μM for catalpa, but fatty acids from pot marigold oil had no effect at concentrations ranging up to 163 μM. The main conjugated fatty acids of pomegranate, tung, catalpa, and pot marigold were cis(c)9, trans(t)11, c13-CLN (71.7%), c9,t11,t13-CLN (70.1%), t9,t11,c13-CLN (31.3%), and t8,t10,c12-CLN (33.4%), respectively. Therefore, the cytotoxicities of fatty acids from pomegranate, tung, and catalpa were supposed to be due to 9,11,13-CLN isomers. To elucidate the cytotoxicity of these CLN, we separated each CLN isomer from the fatty acid mixtures by high-performance liquid chromatography and analyzed its cytotoxicity. The cytotoxicities of c9,t11,c13-CLN, c9,t11,t13-CLN, and t9,t11,c13-CLN were much stronger than that of t8,t10,c12-CLN. Therefore, the higher cytotoxicity of fatty acids from pomegranate, tung, and catalpa than those from pot marigold would be derived from the different activities of 9,11,13-CLN and 8,10,12-CLN. Since there was little difference in the cytotoxicities of c9,t11,c13-CLN, c9,t11,t13-CLN, and t9,t11,c13-CLN, it is suggested that the cis/trans configuration of 9,11,13-CLN isomers had little effect on their cytotoxic effects. The mechanism of the cytotoxicity of the four fatty acids above may involve lipid peroxidation, because the order of toxicity of the fatty acids was consistent with their susceptibility to peroxidation in aqueous phase. This was supported by the decrease in the cytotoxicity of the fatty acids by addition of butylated hydroxytoluene.
Starting Page	477
Ending Page	482
Page Count	6
File Format	PDF
ISSN	00244201
Journal	Lipids
Volume Number	36
Issue Number	5
e-ISSN	15589307
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nutrition Bioorganic Chemistry Medicinal Chemistry Medical Biochemistry Biochemistry Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Organic Chemistry Biochemistry

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