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Plasmenylethonoamine (pPE) and plasmanylcholine (aPC) are important phospholipid subclasses. Herein we explored optimum conditions for enzymatic purification and preparation of pPE and aPC from the mussel Mytilus edulis and bovine brain. Among them, pPE in Mytilus edulis PE was mainly p18:0–20:5 and p18:0–22:6, and its purity was 92.7%; aPC in PC was primarily a16:0–22:6 and a16:0–20:5, and aPC accounted for 90.2% of PC. We thereafter evaluated neurotrophic effects of Mytilus edulis pPE, aPC, and bovine brain pPE in a NGF-induced PC12 cell model. Morphologically, pPE and aPC could both promote differentiation, manifested in a significant increase in neurite length and number, due to increased expression of synaptophysin and growth protein GAP-43 in a dose-independent and structure-selective manner. Importantly, the effect on neuronal nutrition of pPE was better than aPC, and marine pPE was better than terrestrial pPE, which might be ascribed to vinyl-ether bond and differences in fatty acid composition. Abbreviations: AA: arachidonic acid; DHA: docosahexaenoic acid; EIC: extracted ion chromatogram; EPA: eicosapentanoic acid; GAP: growth-associated protein; HPLC: high-performance liquid chromatography; LC-MS/MS: liquid chromatography-tandem mass spectrometry; LPC: lyso-PC; LPE: lyso-PE; MS: mass spectrometry; NGF: nerve growth factor; PC: phosphatidylcholine; aPC: plasmanylcholine; PE: phosphatidylethanolamine; pPE: plasmenylethonoamine; PG: phosphoglycerols; PLs: phospholipids; PS: phosphoserines; TIC: total ion chromatogram.

Preparation and effects on neuronal nutrition of plasmenylethonoamine and plasmanylcholine from the mussel Mytilus edulis