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Published on: July 10, 2019
Improving Cell Engraftment in Cardiac Stem Cell Therapy
Xiaofei Li1, Kenichi Tamama2, Xiaoyun Xie3
1Department of Materials Science and Engineering, The Ohio State University, 2041 College Road, Columbus, OH 43210, USA.
Insights
Stem cell therapy for heart attack (myocardial infarction) faces challenges with cell survival and retention. This review explores strategies to improve cardiac stem cell engraftment for better heart regeneration.
Area of Science:
- Regenerative Medicine
- Cardiovascular Biology
- Biomaterials Science
Background:
- Myocardial infarction (MI) leads to significant cardiac cell death and impaired heart function.
- The heart's limited self-regeneration capacity necessitates therapeutic interventions.
- Current stem cell therapy for MI shows low efficacy due to poor cell engraftment and survival.
Purpose of the Study:
- To review advancements in improving cardiac stem cell engraftment for myocardial infarction.
- To analyze the advantages, disadvantages, and potential solutions for enhancing cell retention and survival.
- To provide an overview of strategies addressing ischemic, inflammatory, and immune rejection challenges.
Main Methods:
- Review of existing literature on stem cell therapy for myocardial infarction.
- Analysis of approaches to increase cell retention using biomaterial carriers.
- Evaluation of methods to augment cell survival, including preconditioning, genetic modification, and controlled factor release.
- Assessment of strategies for immune and inflammatory protection of transplanted cells.
Main Results:
- Various strategies show promise in improving cell retention and survival post-MI.
- Biomaterials enhance cell engraftment, while preconditioning and genetic modifications improve survival under ischemic conditions.
- Methods to mitigate inflammation and immune rejection are crucial for long-term cell viability.
- Despite progress, challenges remain in optimizing these approaches for clinical application.
Conclusions:
- Improving cardiac stem cell engraftment is critical for effective myocardial infarction regeneration.
- A combination of biomaterials, cell preconditioning, and immune modulation offers a promising therapeutic avenue.
- Further research is needed to translate these advancements into robust clinical treatments for heart attack patients.
Abstract:
Myocardial infarction (MI) affects millions of people worldwide. MI causes massive cardiac cell death and heart function decrease. However, heart tissue cannot effectively regenerate by itself. While stem cell therapy has been considered an effective approach for regeneration, the efficacy of cardiac stem cell therapy remains low due to inferior cell engraftment in the infarcted region. This is mainly a result of low cell retention in the tissue and poor cell survival under ischemic, immune rejection and inflammatory conditions. Various approaches have been explored to improve cell engraftment: increase of cell retention using biomaterials as cell carriers; augmentation of cell survival under ischemic conditions by preconditioning cells, genetic modification of cells, and controlled release of growth factors and oxygen; and enhancement of cell survival by protecting cells from excessive inflammation and immune surveillance. In this paper, we review current progress, advantages, disadvantages, and potential solutions of these approaches.
