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A Hydrogel Construct and Fibrin-based Glue Approach to Deliver Therapeutics in a Murine Myocardial Infarction Model.
Published on: June 14, 2015
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An Intrapericardial Injectable Hydrogel Patch for Mechanical-Electrical Coupling with Infarcted Myocardium.
Chaojie Yu1,2, Zhiwei Yue3, Mingyue Shi1
1School of Chemical Engineering and Technology, Tianjin University, Tianjin300350, China.
ACS Nano
|October 3, 2022
Summary
This study introduces a novel hydrogel patch that combines mechanical, electrical, and biological properties to improve heart function after myocardial infarction (MI). The patch supports cell therapy, enhancing cardiac repair and electrical conduction for better recovery.
Area of Science:
- Biomaterials Science
- Cardiovascular Research
- Tissue Engineering
Background:
- Myocardial infarction (MI) impairs cardiac electrical conduction and function.
- Existing hydrogel patches lack synergistic mechanical, electrical, and biological cues for effective cardiac repair.
- Restoring synchronized cardiac pulsation and electrical activity is crucial for treating MI.
Purpose of the Study:
- To develop an injectable, self-adaptive mechanical-electrical coupling hydrogel patch (MEHP) for myocardial infarction (MI) treatment.
- To evaluate the MEHP's ability to provide synergistic cues for cardiac electrical conduction and function restoration.
- To assess the MEHP's efficacy in combination with cell therapy for cardiac tissue engineering.
Main Methods:
- Fabrication of an injectable hydrogel patch (MEHP) using dynamic covalent/noncovalent cross-linking for cell encapsulation.
- Minimally invasive implantation of the MEHP into the pericardial cavity for interfacial coupling with the myocardium.
- Assessment of MEHP's mechanical, electrical, and biological properties, including its effect on cardiac electrical conduction, ventricular remodeling, and neovascularization.
Main Results:
- The MEHP demonstrated excellent interfacial coupling with the myocardium, inhibiting ventricular dilation and assisting cardiac function.
- The hydrogel patch exhibited electrical conductivity and sensitivity matching myocardial tissue, improving electrical connectivity and conduction velocity.
- Combined with cell therapy, the MEHP effectively prevented ventricular fibrosis, promoted neovascularization, and restored synchronized cardiac pulsation.
Conclusions:
- The developed mechanical-electrical coupling hydrogel patch (MEHP) offers a promising strategy for treating myocardial infarction (MI).
- The MEHP's unique properties facilitate synergistic therapeutic effects, including improved electrical conduction and cardiac function.
- This injectable, self-adaptive patch holds potential for clinical translation in cardiac tissue engineering and regenerative medicine.
