Muscle-specific Cand2 is translationally upregulated by mTORC1 and promotes adverse cardiac remodeling

Agnieszka A. Górska, Clara Sandmann, Eva Riechert, Christoph Hofmann, Ellen Malovrh, Eshita Varma, Vivien Kmietczyk, Julie Ölschläger, Lonny Jürgensen, Verena Kamuf-Schenk, Claudia Stroh, Jennifer Furkel, Mathias H. Konstandin, Carsten Sticht, Etienne Boileau, Christoph Dieterich, Norbert Frey, Hugo A. Katus, Shirin Doroudgar, Mirko Völkers

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The mechanistic target of rapamycin (mTOR) promotes pathological remodeling in the heart by activating ribosomal biogenesis and mRNA translation. Inhibition of mTOR in cardiomyocytes is protective; however, a detailed role of mTOR in translational regulation of specific mRNA networks in the diseased heart is unknown. We performed cardiomyocyte genome-wide sequencing to define mTOR-dependent gene expression control at the level of mRNA translation. We identify the muscle-specific protein Cullin-associated NEDD8-dissociated protein 2 (Cand2) as a translationally upregulated gene, dependent on the activity of mTOR. Deletion of Cand2 protects the myocardium against pathological remodeling. Mechanistically, we show that Cand2 links mTOR signaling to pathological cell growth by increasing Grk5 protein expression. Our data suggest that cell-type-specific targeting of mTOR might have therapeutic value against pathological cardiac remodeling.

Original languageEnglish (US)
Article numbere52170
JournalEMBO Reports
Volume22
Issue number12
DOIs
StatePublished - Dec 6 2021
Externally publishedYes

Keywords

  • Cand2
  • cardiac
  • hypertrophy
  • mTOR

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Genetics

Fingerprint

Dive into the research topics of 'Muscle-specific Cand2 is translationally upregulated by mTORC1 and promotes adverse cardiac remodeling'. Together they form a unique fingerprint.

Cite this