Ataxin-10 is part of a cachexokine cocktail triggering cardiac metabolic dysfunction in cancer cachexia

Michaela Schäfer, Christian U. Oeing, Maria Rohm, Ezgi Baysal-Temel, Lorenz H. Lehmann, Ralf Bauer, H. Christian Volz, Michael Boutros, Daniela Sohn, Carsten Sticht, Norbert Gretz, Katrin Eichelbaum, Tessa Werner, Marc N. Hirt, Thomas Eschenhagen, Karin Müller-Decker, Oliver Strobel, Thilo Hackert, Jeroen Krijgsveld, Hugo A. KatusMauricio Berriel Diaz, Johannes Backs, Stephan Herzig

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Objectives: Cancer cachexia affects the majority of tumor patients and significantly contributes to high mortality rates in these subjects. Despite its clinical importance, the identity of tumor-borne signals and their impact on specific peripheral organ systems, particularly the heart, remain mostly unknown. Methods and results: By combining differential colon cancer cell secretome profiling with large-scale cardiomyocyte phenotyping, we identified a signature panel of seven "cachexokines", including Bridging integrator 1, Syntaxin 7, Multiple inositol-polyphosphate phosphatase 1, Glucosidase alpha acid, Chemokine ligand 2, Adamts like 4, and Ataxin-10, which were both sufficient and necessary to trigger cardiac atrophy and aberrant fatty acid metabolism in cardiomyocytes. As a prototypical example, engineered secretion of Ataxin-10 from non-cachexia-inducing cells was sufficient to induce cachexia phenotypes in cardiomyocytes, correlating with elevated Ataxin-10 serum levels in murine and human cancer cachexia models. Conclusions: As Ataxin-10 serum levels were also found to be elevated in human cachectic cancer patients, the identification of Ataxin-10 as part of a cachexokine cocktail now provides a rational approach towards personalized predictive, diagnostic and therapeutic measures in cancer cachexia.

Original languageEnglish
Pages (from-to)67-78
Number of pages12
JournalMolecular Metabolism
Volume5
Issue number2
DOIs
StatePublished - 1 Feb 2016
Externally publishedYes

Keywords

  • Ataxin-10
  • Cancer cachexia
  • Cardiac dysfunction
  • Fatty acid metabolism

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