Sequestration of polyunsaturated fatty acids in membrane phospholipids of Caenorhabditis elegans dauer larva attenuates eicosanoid biosynthesis for prolonged survival

Redox Biology
Sin Man LamGuanghou Shui

Abstract

Mechanistic basis governing the extreme longevity and developmental quiescence of dauer juvenile, a "non-ageing" developmental variant of Caenorhabditis elegans, has remained largely obscure. Using a lipidomic approach comprising multiple reaction monitoring transitions specific to distinct fatty acyl moieties, we demonstrated that in comparison to other developmental stages, the membrane phospholipids of dauer larva contain a unique enrichment of polyunsaturated fatty acids (PUFAs). Esterified PUFAs in phospholipids exhibited temporal accumulation throughout the course of dauer endurance, followed by sharp reductions prior to termination of diapause. Reductions in esterified PUFAs were accompanied by concomitant increases in unbound PUFAs, as well as their corresponding downstream oxidized derivatives (i.e. eicosanoids). Global phospholipidomics has unveiled that PUFA sequestration in membrane phospholipids denotes an essential aspect of dauer dormancy, principally via suppression of eicosanoid production; and a failure to upkeep membrane lipid homeostasis is associated with termination of dauer endurance.

Citations

Aug 1, 2018·Marine Drugs·Tse-Hung HuangJia-You Fang
Nov 9, 2019·Endocrine, Metabolic & Immune Disorders Drug Targets·Shuang YaoGuanghua Luo
Jun 24, 2020·The Plant Journal : for Cell and Molecular Biology·Yongtai YinMaoteng Li
Nov 11, 2020·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·Zhe CaoHo Yi Mak
Jan 29, 2020·Developmental Cell·Abdiasis M HusseinHannele Ruohola-Baker
Jan 25, 2021·Analytica Chimica Acta·Sin Man LamGuanghou Shui
Feb 8, 2020·Prostaglandins & Other Lipid Mediators·N Z MokoenaC H Pohl

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BETA
PCR

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Matlab

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