Journal article

Phospholipase A2 activity during the replication cycle of the flavivirus West Nile virus

Susann Liebscher, Rebecca L Ambrose, Turgut E Aktepe, Andrea Mikulasova, Julia E Prier, Leah K Gillespie, Adam J Lopez-Denman, Thusitha WT Rupasinghe, Dedreia Tull, Malcolm J McConville, Jason M Mackenzie

PLoS Pathogens | PUBLIC LIBRARY SCIENCE | Published : 2018

Abstract

Positive-sense RNA virus intracellular replication is intimately associated with membrane platforms that are derived from host organelles and comprised of distinct lipid composition. For flaviviruses, such as West Nile virus strain Kunjin virus (WNVKUN) we have observed that these membrane platforms are derived from the endoplasmic reticulum and are rich in (at least) cholesterol. To extend these studies and identify the cellular lipids critical for WNVKUN replication we utilized a whole cell lipidomics approach and revealed an elevation in phospholipase A2 (PLA2) activity to produce lyso-phosphatidylcholine (lyso-PChol). We observed that the PLA2 enzyme family is activated in WNVKUN-infecte..

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