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Dengue virus dominates lipid metabolism modulations in Wolbachia-coinfected Aedes aegypti.

Cassandra KohM Nurul IslamYixin H YeNunya ChotiwanBarbara G AndreJohn T BelisleKonstantinos A KouremenosSaravanan DayalanDedreia L TullStephan KlattRushika PereraElizabeth A McGraw
Published in: Communications biology (2020)
Competition between viruses and Wolbachia for host lipids is a proposed mechanism of Wolbachia-mediated virus blocking in insects. Yet, the metabolomic interaction between virus and symbiont within the mosquito has not been clearly defined. We compare the lipid profiles of Aedes aegypti mosquitoes bearing mono- or dual-infections of the Wolbachia wMel strain and dengue virus serotype 3 (DENV3). We found metabolic signatures of infection-induced intracellular events but little evidence to support direct competition between Wolbachia and virus for host lipids. Lipid profiles of dual-infected mosquitoes resemble those of DENV3 mono-infected mosquitoes, suggesting virus-driven modulation dominates over that of Wolbachia. Interestingly, knockdown of key metabolic enzymes suggests cardiolipins are host factors for DENV3 and Wolbachia replication. These findings define the Wolbachia-DENV3 metabolic interaction as indirectly antagonistic, rather than directly competitive, and reveal new research avenues with respect to mosquito × virus interactions at the molecular level.
Keyphrases
  • dengue virus
  • aedes aegypti
  • zika virus
  • fatty acid
  • genome wide
  • gene expression
  • disease virus
  • oxidative stress
  • single cell
  • multidrug resistant
  • reactive oxygen species
  • diabetic rats