Concise Review: Optimized Strategies for Stem Cell-Based Therapy in Myocardial Repair: Clinical Translatability and...

Area of Science:

• Regenerative Medicine
• Cardiovascular Research
• Stem Cell Biology

Background:

• Ischemic heart diseases (IHDs) cause significant cardiomyocyte loss, with current treatments limited in reversing damage.
• Stem cell therapy has emerged as a potential strategy for cardiac repair and functional recovery following IHDs.
• Despite promising preclinical data, clinical translation of stem cell therapy for IHDs faces skepticism due to inconsistent trial outcomes.

Purpose of the Study:

• To review and compare the efficacy of different stem cell types, dosages, delivery routes, and timing in preclinical and clinical settings for IHDs.
• To discuss the mechanisms of action of stem cells in myocardial repair, including the role of stem cell-derived secretomes and exosomes.
• To critically evaluate strategies for optimizing stem cells and cardiac microenvironments to improve engraftment and therapeutic efficacy for clinical application.

Main Methods:

• Comprehensive review of preclinical animal studies and clinical trials on stem cell therapy for IHDs.
• Analysis of stem cell types, including dose, delivery routes, and timing.
• Exploration of stem cell mechanisms, secretomes, and exosomes in myocardial repair.
• Evaluation of strategies to enhance stem cell engraftment and efficacy.

Main Results:

• Varied outcomes reported for different stem cell types, doses, and delivery methods in IHD treatment.
• Stem cell secretomes and exosomes play a significant role in mediating myocardial repair.
• Optimization of donor cells and cardiac microenvironments can enhance stem cell efficacy.

Conclusions:

• Stem cell therapy holds potential for treating IHDs, but further research is needed to address clinical translation challenges.
• Understanding stem cell mechanisms and optimizing delivery strategies are crucial for improving therapeutic outcomes.
• Future efforts should focus on enhancing stem cell engraftment and efficacy within the cardiac microenvironment for successful clinical application.