ANKK1 is found in myogenic precursors and muscle fibers subtypes with glycolytic metabolism

PLoS One. 2018 May 14;13(5):e0197254. doi: 10.1371/journal.pone.0197254. eCollection 2018.

Abstract

Ankyrin repeat and kinase domain containing 1 (ANKK1) gene has been widely related to neuropsychiatry disorders. The localization of ANKK1 in neural progenitors and its correlation with the cell cycle has suggested its participation in development. However, ANKK1 functions still need to be identified. Here, we have further characterized the ANKK1 localization in vivo and in vitro, by using immunolabeling, quantitative real-time PCR and Western blot in the myogenic lineage. Histologic investigations in mice and humans revealed that ANKK1 is expressed in precursors of embryonic and adult muscles. In mice embryos, ANKK1 was found in migrating myotubes where it shows a polarized cytoplasmic distribution, while proliferative myoblasts and satellite cells show different isoforms in their nuclei and cytoplasm. In vitro studies of ANKK1 protein isoforms along the myogenic progression showed the decline of nuclear ANKK1-kinase until its total exclusion in myotubes. In adult mice, ANKK1 was expressed exclusively in the Fast-Twitch muscles fibers subtype. The induction of glycolytic metabolism in C2C12 cells with high glucose concentration or treatment with berberine caused a significant increase in the ANKK1 mRNA. Similarly, C2C12 cells under hypoxic conditions caused the increase of nuclear ANKK1. These results altogether show a relationship between ANKK1 gene regulation and the metabolism of muscles during development and in adulthood. Finally, we found ANKK1 expression in regenerative fibers of muscles from dystrophic patients. Future studies in ANKK1 biology and the pathological response of muscles will reveal whether this protein is a novel muscle disease biomarker.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Animals
  • Cell Hypoxia / physiology
  • Cell Line
  • Cell Nucleus / enzymology
  • Cell Proliferation
  • Child
  • Cytoplasm / enzymology
  • Female
  • Humans
  • Infant
  • Male
  • Mice, Inbred BALB C
  • Mice, Inbred C57BL
  • Middle Aged
  • Muscle Cells / cytology
  • Muscle Cells / enzymology*
  • Muscle Cells / pathology
  • Muscle, Skeletal / cytology
  • Muscle, Skeletal / enzymology*
  • Muscle, Skeletal / growth & development
  • Muscle, Skeletal / pathology
  • Muscular Dystrophies / enzymology
  • Muscular Dystrophies / pathology
  • Protein Serine-Threonine Kinases / metabolism*
  • Stem Cells / cytology
  • Stem Cells / enzymology*
  • Stem Cells / pathology

Substances

  • ANKK1 protein, human
  • ANKK1 protein, mouse
  • Protein Serine-Threonine Kinases

Grants and funding

This work has been supported by the Fundación Isabel Gemio (http://www.fundacionisabelgemio.com) (JJV and FP), and Instituto de Salud Carlos III (ES) grant PI15/01013 (JH). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.