Mushroom body glycolysis is required for olfactory memory in Drosophila

Chia Lin Wu*, Ching Ching Chang, Jie Kai Wu, Meng Hsuan Chiang, Chu Huai Yang, Hsueh Cheng Chiang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

12 Scopus citations

Abstract

Glucose catabolism, also known as glycolysis, is important for energy generation and involves a sequence of enzymatic reactions that convert a glucose molecule into two pyruvate molecules. The glycolysis process generates adenosine triphosphate as a byproduct. In this study, we investigated whether glycolysis plays a role in maintaining neuronal functions in the Drosophila mushroom bodies (MBs), which are generally accepted to be an olfactory learning and memory center. Our data showed that individual knockdown of glycolytic enzymes in the MBs, including hexokinase (HexA), phosphofructokinase (Pfk), or pyruvate kinase (PyK), disrupts olfactory memory. Whole-mount brain immunostaining indicated that pyruvate kinase is strongly expressed in the MB αβ, α′β′, and γ neuron subsets. We conclude that HexA, Pfk, and PyK are required in each MB neuron subset for olfactory memory formation. Our data therefore indicates that glucose catabolism in the MBs is important for olfactory memory formation in Drosophila.

Original languageEnglish
Pages (from-to)13-19
Number of pages7
JournalNeurobiology of Learning and Memory
Volume150
DOIs
StatePublished - 04 2018

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Inc.

Keywords

  • Brain
  • Drosophila
  • Glycolysis
  • Mushroom body
  • Olfactory memory

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