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 language | English |
|---|---|
| Pages (from-to) | 585-600 |
| Number of pages | 16 |
| Journal | Cardiovascular Research |
| Volume | 121 |
| Issue number | 4 |
| Early online date | 17 Feb 2025 |
| DOIs | |
| Publication status | Published - 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).
| Funders | Funder number |
|---|---|
| Dutch CardioVascular Alliance (DCVA) | |
| Dutch Heart Foundation | DCVA2017-18 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