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An Injectable and Drug-loaded Supramolecular Hydrogel for Local Catheter Injection into the Pig Heart
Published on: June 7, 2015
Percutaneous cell delivery into the heart using hydrogels polymerizing in situ
Timothy P Martens1, Amandine F G Godier, Jonathan J Parks
1Department of Biomedical Engineering, Columbia University, New York, NY, USA; Department of Surgery, Columbia University Medical Center, New York, NY, USA. tpm2102@columbia.edu
Cell Transplantation
|June 30, 2009
Summary
Biocompatible hydrogels improve stem cell retention and survival after heart attack. This novel delivery method enhances cell therapy for myocardial infarction, offering hope for treating heart failure.
Area of Science:
- Regenerative Medicine
- Biomaterials Science
- Cardiovascular Research
Background:
- Heart disease is a leading cause of death, with myocardial infarction leading to heart failure.
- Current cell therapies for heart disease show promise but lack consistent efficacy due to poor cell retention and survival.
- Improving cell delivery and retention is crucial for successful cardiac regenerative medicine.
Purpose of the Study:
- To develop and evaluate in situ polymerizable biocompatible hydrogels as a delivery vehicle for stem cells in ischemic myocardium.
- To enhance cell retention, survival, and function following delivery into the heart.
- To assess the feasibility of using percutaneous catheters for delivering cell-hydrogel suspensions.
Main Methods:
- Human bone marrow-derived mesenchymal stem cells were combined with fibrin glue.
- Commercial percutaneous catheters were evaluated for delivering viscous cell/hydrogel suspensions.
- Fibrin glue polymerization kinetics were characterized for catheter compatibility.
- In vivo effectiveness was demonstrated in a nude rat model of myocardial infarction.
Main Results:
- Biocompatible hydrogels, specifically fibrin glue, were successfully delivered via percutaneous catheters.
- Hydrogel polymerization kinetics were defined for optimal catheter-based delivery.
- The hydrogel delivery system significantly increased cell retention and survival in the infarcted myocardium.
- This approach shows potential for improving cell-based therapies for heart disease.
Conclusions:
- In situ polymerizable hydrogels serve as effective vehicles for delivering stem cells to the ischemic heart.
- This method enhances cell retention and survival, addressing a key limitation in cardiac cell therapy.
- The findings support the development of improved cell delivery strategies for treating heart failure post-myocardial infarction.
