Abstract
Senescence plays a key role in various physiological and pathological processes. We reported that injury-induced transient senescence correlates with heart regeneration, yet the multi-omics profile and molecular underpinnings of regenerative senescence remain obscure. Using proteomics and single-cell RNA sequencing, here we report the regenerative senescence multi-omic signature in the adult mouse heart and establish its role in neonatal heart regeneration and agrin-mediated cardiac repair in adult mice. We identified early growth response protein 1 (Egr1) as a regulator of regenerative senescence in both models. In the neonatal heart, Egr1 facilitates angiogenesis and cardiomyocyte proliferation. In adult hearts, agrin-induced senescence and repair require Egr1, activated by the integrin–FAK–ERK–Akt1 axis in cardiac fibroblasts. We also identified cathepsins as injury-induced senescence-associated secretory phenotype components that promote extracellular matrix degradation and potentially assist in reducing fibrosis. Altogether, we uncovered the molecular signature and functional benefits of regenerative senescence during heart regeneration, with Egr1 orchestrating the process.
| Original language | English |
|---|---|
| Pages (from-to) | 915-932 |
| Number of pages | 18 |
| Journal | Nature Cardiovascular Research |
| Volume | 3 |
| Issue number | 8 |
| Early online date | 14 Jun 2024 |
| DOIs | |
| Publication status | Published - Aug 2024 |
Funding
This work was supported by grants to E.T. from the European Research Council (ERC AdG grant no. 788194, CardHeal), ERA-CVD CARDIO-PRO, the Israel Science Foundation (ISF, grant no. 2214/22), the Yotam project and the Weizmann institute sustainability and energy research initiative (grant no. 142735), the Minerva Center on ‘Aging, from physical materials to human tissues’, the Israel Ministry of Science and Technology, the EU Horizon 2020 research innovation programme REANIMA (providing grants to E.T. and E.M.T., grant no. 874764), the Estate of Caroline Cancelmo, the Erica Drake Fund, the Weizmann UK Building for Biocomplexity Research (GG 2016), the Aharon and Tova (Buena) Cohen Memorial Fund, the Horwitz Research Fund, the Yacov Chaoul Kapczuk Fund, the Estate of Elizabeth Wachsman, Seed for Peace. Inc., the Jacques Asseoff Trust, the Gurwin Family Fund for Scientific Research and the Midwest Electron Microscope Project. We thank T. Eigler-Hirsh, S. Cheng, A. Aharonov, W. Li, G. Aviel, Y. Divinsky, Z. Petrover, E. Amzallag, E. Spector, L. Roitman, A. Agrawal, J.-M. Majewska, Z. Porat and N. Halevi for their suggestions. We thank M. Cohen from the Histology Unit, Department of Veterinary Resources, Weizmann Institute of Science, for histological processing and staining. We thank T. Moshe and S. Ulman for animal husbandry. We thank R. Ronen and R. Blecher from the Crown Genomics Institute of the Nancy and Stephen Grand Israel National Center for Personalized Medicine for single-cell sample processing (library preparation and data sequencing). We thank M. Yehudi, H. David, G. Attias, S. Vishner and Z. Dobrish for technical laboratory assistance. Illustrations in Fig. 7 were created with BioRender. Publisher Copyright: © The Author(s), under exclusive licence to Springer Nature Limited 2024.
All Science Journal Classification (ASJC) codes
- Biochemistry, Genetics and Molecular Biology (miscellaneous)
- Cell Biology
- Medicine (miscellaneous)
- Cardiology and Cardiovascular Medicine