Respiration-deficient astrocytes survive as glycolytic cells in vivo

Lotti M. Supplie, Tim Düking, Graham Campbell, Francisca Diaz, Carlos T. Moraes, Magdalena Götz, Bernd Hamprecht, Susann Boretius, Don Mahad, Klaus Armin Nave

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Neurons and glial cells exchange energy-rich metabolites and it has been suggested, originally based on in vitro data, that astrocytes provide lactate to glutamatergic synapses (“lactate shuttle”). Here, we have studied astrocytes that lack mitochondrial respiration in vitro and in vivo. A novel mouse mutant (GLASTCreERT2::Cox10flox/flox) was generated, in which the administration of tamoxifen causes mutant astrocytes to fail in the assembly of mitochondrial cytochrome c oxidase (COX). Focusing on cerebellar Bergmann glia (BG) cells, which exhibit the highest rate of Cre-mediated recombination, we found a normal density of viable astrocytes even 1 year after tamoxifen-induced Cox10 gene targeting. Our data show that BG cells, and presumably all astrocytes, can survive by aerobic glycolysis for an extended period of time in the absence of glial pathology or unspecific signs of neurodegeneration.

Original languageEnglish (US)
Pages (from-to)4231-4242
Number of pages12
JournalJournal of Neuroscience
Volume37
Issue number16
DOIs
StatePublished - Apr 19 2017

Keywords

  • Astrocytes
  • Brain energy metabolism
  • Glycolysis
  • Lactate shuttle
  • Mitochondria

ASJC Scopus subject areas

  • Neuroscience(all)

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