Cardiomyocyte SORBS2 expression increases in heart failure and regulates integrin interactions and extracellular matrix composition

  • Louk T Timmer
  • , Elvira den Hertog
  • , Danielle Versteeg
  • , Harm Post
  • , Job A J Verdonschot
  • , Jantine Monshouwer-Kloots
  • , Eirini Kyriakopoulou
  • , Ilaria Perini
  • , Tim Koopmans
  • , Petra van der Kraak
  • , Lorena Zentilin
  • , Stephane R B Heymans
  • , Aryan Vink
  • , Mauro Giacca
  • , Albert J R Heck
  • , Eva van Rooij*
  • *Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Aims In this study, we aimed to uncover genes associated with stressed cardiomyocytes by combining single-cell transcriptomic data sets from failing cardiac tissue from both humans and mice. Methods and results Our bioinformatic analysis identified SORBS2 as conserved NPPA-correlated gene. Using mouse models and cardiac tissue from human heart failure patients, we demonstrated that SORBS2 expression is consistently increased during pathological remodelling, correlates to disease severity, and is regulated by GATA4. By affinity purification mass spectrometry, we showed SORBS2 to interact with the integrin–cytoskeleton connections. Cardiomyocyte-specific genetic loss of Sorbs2 in adult mice changed integrin interactions, indicated by the increased expression of several integrins and altered extracellular matrix components connecting to these integrins, leading to an exacerbated fibrotic response during pathological remodelling. Conclusion Sorbs2 is a cardiomyocyte-enriched gene that is increased during progression to heart failure in a GATA4-dependent manner and correlates to phenotypical hallmarks of cardiac failure. Our data indicate SORBS2 to function as a crucial regulator of integrin interactions and cardiac fibrosis.

Original languageEnglish
Pages (from-to)585-600
Number of pages16
JournalCardiovascular Research
Volume121
Issue number4
Early online date17 Feb 2025
DOIs
Publication statusPublished - Mar 2025

Bibliographical note

© The Author(s) 2025. Published by Oxford University Press on behalf of the European Society of Cardiology.

Funding

This work was supported by the Dutch CardioVascular Alliance (DCVA), an initiative with support of the Dutch Heart Foundation (DCVA2017-18 ARENA-PRIME) and a Vici grant from the Dutch Research Council (NWO), project 09150181910020 to E.v.R. Utrecht Sequencing Facility is subsidized by the University Medical Center Utrecht, Hubrecht Institute, Utrecht University, and The Netherlands X-omics Initiative (NWO project 184.034.019). H.P. and A.J.R.H. acknowledge support from the Netherlands Proteomics Centre, which is subsidized by Utrecht University and The Netherlands X-omics Initiative (NWO project 184.034.019). J.A.J.V. received a Dekker Clinical Scientist grant from the Dutch Heart Foundation (03-005-2022-0040) and an Academic Funds grant from the Maastricht University Medical Center (MUMC) (00499).

FundersFunder number
Dutch CardioVascular Alliance (DCVA)
Dutch Heart FoundationDCVA2017-18 ARENA-PRIME, 03-005-2022-0040
Dutch Research Council (NWO)09150181910020
University Medical Center Utrecht, Hubrecht Institute, Utrecht University
Netherlands Xomics Initiative (NWO)184.034.019
Netherlands Proteomics Centre
Academic Funds Maastricht University Medical Center (MUMC)00499

    Keywords

    • Cardiomyocyte
    • Extracellular matrix
    • Heart failure
    • Integrins
    • SORBS2

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