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Updated: May 10, 2025
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Transplantation of a 3D Bioprinted Patch in a Murine Model of Myocardial Infarction
Published on: September 26, 2020
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A biodegradable, microstructured, electroconductive and nano-integrated drug eluting patch (MENDEP) for myocardial
Caterina Cristallini1,2, Daniela Rossin3, Roberto Vanni3
1Institute for Chemical and Physical Processes, CNR-IPCF, Via Giuseppe Moruzzi 1, 56124, Pisa, Italy.
Bioactive Materials
|April 24, 2025
Summary
A novel cardiac patch (MENDEP) attracts precursor cells to repair heart damage after ischemia/reperfusion injury. This electroconductive, nano-functionalized patch promotes vascular differentiation and reduces fibrosis, showing potential for myocardial repair.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Cardiovascular Engineering
Background:
- Adverse ventricular remodeling post-myocardial infarction leads to heart failure.
- Current treatments have limitations in promoting endogenous repair mechanisms.
Purpose of the Study:
- To develop and evaluate a microstructured, electroconductive, and nano-functionalized drug-eluting cardiac patch (MENDEP).
- To assess MENDEP's ability to recruit and differentiate endogenous precursor cells for cardiac repair.
- To investigate MENDEP's efficacy in counteracting ventricular remodeling in a rat model of ischemia/reperfusion (I/R).
Main Methods:
- MENDEP fabrication with specific microstructures, electroconductive, and nano-functionalized properties.
- In vitro characterization including cytocompatibility, cardioinductivity, migration, and conductivity assays.
- In vivo epicardial implantation in a rat I/R model followed by histological, immunofluorescence, and biomarker analysis.
Main Results:
- MENDEP exhibited mechanical properties similar to myocardium, controlled drug release, and biodegradability.
- In vitro tests confirmed cytocompatibility, cardioinductivity, chemoattraction, and preserved cell synchronicity.
- In vivo, MENDEP was retained, vascularized, recruited precursor cells, promoted vascular differentiation, preserved myocardium, and reduced fibrosis in the infarcted area.
Conclusions:
- MENDEP is a promising biomaterial for cardiac repair, demonstrating effective precursor cell recruitment and differentiation.
- The patch supports myocardial preservation and functional recovery post-I/R injury without perturbing healthy tissue.
- MENDEP shows significant potential for treating myocardial infarction and preventing adverse ventricular remodeling.
