The Ncoa7 locus regulates V-ATPase formation and function, neurodevelopment and behaviour

Cell Mol Life Sci. 2021 Apr;78(7):3503-3524. doi: 10.1007/s00018-020-03721-6. Epub 2020 Dec 19.


Members of the Tre2/Bub2/Cdc16 (TBC), lysin motif (LysM), domain catalytic (TLDc) protein family are associated with multiple neurodevelopmental disorders, although their exact roles in disease remain unclear. For example, nuclear receptor coactivator 7 (NCOA7) has been associated with autism, although almost nothing is known regarding the mode-of-action of this TLDc protein in the nervous system. Here we investigated the molecular function of NCOA7 in neurons and generated a novel mouse model to determine the consequences of deleting this locus in vivo. We show that NCOA7 interacts with the cytoplasmic domain of the vacuolar (V)-ATPase in the brain and demonstrate that this protein is required for normal assembly and activity of this critical proton pump. Neurons lacking Ncoa7 exhibit altered development alongside defective lysosomal formation and function; accordingly, Ncoa7 deletion animals exhibited abnormal neuronal patterning defects and a reduced expression of lysosomal markers. Furthermore, behavioural assessment revealed anxiety and social defects in mice lacking Ncoa7. In summary, we demonstrate that NCOA7 is an important V-ATPase regulatory protein in the brain, modulating lysosomal function, neuronal connectivity and behaviour; thus our study reveals a molecular mechanism controlling endolysosomal homeostasis that is essential for neurodevelopment.

Keywords: Autism; Behaviour; Lysosome; Mouse; Neurodevelopment; Neuron; V-ATPase.

MeSH terms

  • Animals
  • Behavior, Animal*
  • Disease Models, Animal*
  • Endosomes / metabolism
  • Female
  • Lysosomes / metabolism
  • Mice
  • Mice, Inbred C57BL
  • Mice, Knockout
  • Neurodevelopmental Disorders / etiology
  • Neurodevelopmental Disorders / metabolism
  • Neurodevelopmental Disorders / pathology*
  • Neurons / metabolism
  • Neurons / pathology*
  • Nuclear Receptor Coactivators / physiology*
  • Oxidative Stress*
  • Vacuolar Proton-Translocating ATPases / genetics
  • Vacuolar Proton-Translocating ATPases / metabolism*


  • Ncoa7 protein, mouse
  • Nuclear Receptor Coactivators
  • Vacuolar Proton-Translocating ATPases