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Cell sheet engineering for myocardial tissue reconstruction
Tatsuya Shimizu1, Masayuki Yamato, Akihiko Kikuchi
1Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan.
Biomaterials
|April 18, 2003
Summary
Cell sheet engineering offers a novel scaffold-free approach for myocardial tissue regeneration. This method enables the creation of 3-D functional heart tissues with improved cell integration and reduced inflammation for heart failure treatment.
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Cardiovascular Research
Background:
- Myocardial tissue engineering aims to treat heart failure using biodegradable scaffolds.
- Current scaffold-based methods face challenges like poor cell migration and inflammatory responses.
- Existing techniques often utilize materials such as poly(glycolic acid), gelatin, alginate, or collagen.
Purpose of the Study:
- To introduce a novel scaffold-free cell sheet engineering technique for creating 3-D myocardial tissues.
- To overcome limitations associated with traditional scaffold-based tissue engineering.
- To develop a method for fabricating clinically applicable cardiac constructs.
Main Methods:
- Utilizing temperature-responsive culture surfaces to harvest viable, contiguous cell sheets without enzymatic digestion.
- Layering multiple cardiomyocyte cell sheets to construct three-dimensional (3-D) tissues.
- Evaluating the in vitro and in vivo functionality and structural characteristics of the engineered tissues.
Main Results:
- Successfully constructed 3-D functional myocardial tissues through cell sheet layering.
- Achieved electrical communication and simultaneous beating in layered cardiomyocyte sheets.
- Demonstrated long-term survival, macroscopic pulsation, and native-like structures of engineered tissues in vivo.
Conclusions:
- Scaffold-free cell sheet engineering presents a promising alternative for myocardial tissue fabrication.
- This innovative approach overcomes key limitations of current tissue engineering strategies.
- Cell sheet engineering holds significant potential for advancing regenerative medicine and clinical applications in treating heart failure.