Cited by 108Cardiac Fibrosis and RemodelingHydrogels: synthesis, properties, applicationsTissue Engineering and Regenerative Medicine

Engineered 3D cardiac fibrotic tissue to study fibrotic remodeling

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Sadeghi, Amir Hossein, Shin, Su Ryon, Deddens, Janine C., Fratta, Giuseppe, Mandla, Serena, Yazdi, Iman K., Prakash, Gyan, Antona, Silvia +5 more·2017·Advanced Healthcare Materials

Abstract

Activation of cardiac fibroblasts into myofibroblasts is considered to play an essential role in cardiac remodeling and fibrosis. A limiting factor in studying this process is the spontaneous activation of cardiac fibroblasts when cultured on two‐dimensional (2D) culture plates. In this study, a simplified three‐dimensional (3D) hydrogel platform of contractile cardiac tissue, stimulated by transforming growth factor‐β1 (TGF‐β1), is presented to recapitulate a fibrogenic microenvironment. It is hypothesized that the quiescent state of cardiac fibroblasts can be maintained by mimicking the mechanical stiffness of native heart tissue. To test this hypothesis, a 3D cell culture model consisting of cardiomyocytes and cardiac fibroblasts encapsulated within a mechanically engineered gelatin methacryloyl hydrogel, is developed. The study shows that cardiac fibroblasts maintain their quiescent phenotype in mechanically tuned hydrogels. Additionally, treatment with a beta‐adrenergic agonist increases beating frequency, demonstrating physiologic‐like behavior of the heart constructs. Subsequently, quiescent cardiac fibroblasts within the constructs are activated by the exogenous addition of TGF‐β1. The expression of fibrotic protein markers (and the functional changes in mechanical stiffness) in the fibrotic‐like tissues are analyzed to validate the model. Overall, this 3D engineered culture model of contractile cardiac tissue enables controlled activation of cardiac fibroblasts, demonstrating the usability of this platform to study fibrotic remodeling.

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Authors
Sadeghi, A. H., Shin, S. R., Deddens, J. C., Fratta, G., Mandla, S., Yazdi, I. K., Prakash, G., Antona, S., Demarchi, D., Buijsrogge, M. P., Sluijter, J. P. G., Hjortnaes, J., & Khademhosseini, A.
Affiliations
  • Brigham and Women's Hospital (US)
  • University Medical Center Utrecht (NL)
  • Politecnico di Torino (IT)
Corresponding author
Khademhosseini, Ali
Venue
Advanced Healthcare Materials
Publisher
Wiley
Published
2017-05-12
Volume
6
Issue
11
ISSN
  • 2192-2640 (ISSN-L)
  • 2192-2659
OpenAlex
W2612053462
Cited by
108
References
77
Citations by year
2026: 10 · 2025: 7 · 2024: 7 · 2023: 12 · 2022: 19 · 2021: 21 · 2020: 11 · 2019: 11 · 2018: 9 · 2017: 1
FWCI
6.76
Type
journal article
Language
en
Open access
Locations
  • Advanced Healthcare Materials (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • PORTO@Iris (submittedVersion, other-oa)
  • Utrecht University Repository (Utrecht University) (submittedVersion, other-oa)
  • PORTO Publications Open Repository TOrino (Politecnico di Torino) (submittedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion)
Funders
National Institutes of Health (EB012597, AR057837, DE021468, HL099073, R56AI105024)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
Keywords
myocardial fibrosis, cardiac remodeling, cardiac fibroblast activation, myofibroblast differentiation, gelatin methacryloyl hydrogel, stiffness, TGF-β1, cardiomyocytes, beta-adrenergic agonists, beating frequency, fibrotic microenvironment, engineered heart tissue
MeSH terms
Animals, Cells, Cultured, Fibroblasts, Fibrosis, Models, Cardiovascular, Cardiomyopathies, Myocardium, Rats, Sprague-Dawley, Hydrogels, Rats, Transforming Growth Factor beta1, Cellular Microenvironment

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