ZFIN ID: ZDB-PUB-190622-2
Proteomics analysis of extracellular matrix remodeling during zebrafish heart regeneration
Garcia-Puig, A., Mosquera, J.L., Jiménez-Delgado, S., García-Pastor, C., Jorba, I., Navajas, D., Canals, F., Raya, A.
Date: 2019
Source: Molecular & cellular proteomics : MCP   18(9): 1745-1755 (Journal)
Registered Authors: Raya, Angel
Keywords: Animal models*, Cardiovascular disease, Cardiovascular function or biology, Developmental biology*, Extracellular matrix, Extracellular matrix*, atomic force microscopy, heart regeneration, proteomic analysis
MeSH Terms:
  • Animals
  • Biomechanical Phenomena
  • Extracellular Matrix/physiology*
  • Extracellular Matrix/ultrastructure
  • Extracellular Matrix Proteins/analysis
  • Extracellular Matrix Proteins/metabolism
  • Heart/physiology*
  • Microscopy, Atomic Force
  • Myocardium/cytology*
  • Proteomics/methods
  • Regeneration/physiology*
  • Zebrafish
  • Zebrafish Proteins/analysis*
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism
PubMed: 31221719 Full text @ Mol. Cell. Proteomics
Adult zebrafish, in contrast to mammals, are able to regenerate their hearts in response to injury or experimental amputation. Our understanding of the cellular and molecular bases that underlie this process, although fragmentary, has increased significantly over the last years. However, the role of the extracellular matrix (ECM) during zebrafish heart regeneration has been comparatively rarely explored. Here, we set out to characterize the ECM protein composition in adult zebrafish hearts, and whether it changed during the regenerative response. For this purpose, we first established a decellularization protocol of adult zebrafish ventricles that significantly enriched the yield of ECM proteins. We then performed proteomic analyses of decellularized control hearts and at different times of regeneration. Our results show a dynamic change in ECM protein composition, most evident at the earliest (7 days post-amputation) time-point analyzed. Regeneration associated with sharp increases in specific ECM proteins, and with an overall decrease in collagens and cytoskeletal proteins. We finally tested by atomic force microscopy that the changes in ECM composition translated to decreased ECM stiffness. Our cumulative results identify changes in the protein composition and mechanical properties of the zebrafish heart ECM during regeneration.