Abstract:
:Hydroxyoctadecadienoic acids (HODEs) are generated by oxidation of linoleic acid in vivo and thought to mediate various pathophysiological responses. In this study, we examined the effects of HODEs on EL4 mouse lymphoma cell growth and found that 9-(E,Z)-HODE inhibited EL4 cell growth in a dose-dependent manner, whereas no such growth inhibition was observed with other isomers (9-(E,E)-, 13-(Z,E)-, or 13-(E,E)-HODE), suggesting that the growth-inhibitory effect of HODEs was stereospecific. Analysis by flow cytometry (FACS) with annexin V and propidium iodide (PI) staining showed that 9-(E,Z)-HODE induced apoptosis with G2/M phase arrest. We next examined the growth inhibition profile of 9-(E,Z)-HODE against a panel of 39 human cancer cell lines (JFCR39). The fingerprint of growth inhibition by 9-(E,Z)-HODE exhibited a high degree of similarity to that by MLN4924, an inhibitor of NEDD8-activating enzyme. The intracellular NEDD8 (ubiquitin-like protein) expression in EL4 cells was decreased by the treatment with 9-(E,Z)-HODE as assessed by immunoblotting and flow cytometry. In conclusion, 9-(E,Z)-HODE specifically induced G2/M phase arrest and apoptosis, and the decrease of NEDD8 expression might be involved in this effect.
journal_name
Biol Pharm Bulljournal_title
Biological & pharmaceutical bulletinauthors
Kodaka A,Hayakawa Y,AlSayegh RJ,Yasuhara T,Tomoda H,Oku T,Dan S,Tsuiji M,Tsuji Tdoi
10.1248/bpb.b18-00935subject
Has Abstractpub_date
2019-01-01 00:00:00pages
937-943issue
6eissn
0918-6158issn
1347-5215journal_volume
42pub_type
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