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Generation of Aligned Functional Myocardial Tissue Through Microcontact Printing
Published on: March 19, 2013
Progress and prospects: cell based regenerative therapy for cardiovascular disease
E D de Muinck1, C Thompson, M Simons
1Department of Physiology, Dartmouth Medical School, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA.
Abstract:
Experimental and clinical studies are progressing simultaneously to investigate the mechanisms and efficacy of progenitor cell treatment after an acute myocardial infarction and in chronic congestive heart failure. Multipotent progenitor cells appear to be capable of improving cardiac perfusion and/or function; however, the mechanisms still are unclear, and the issue of whether or not trans-differentiation occurs remains unsettled. Both experimentally and clinically, cells originating from different tissues have been shown capable of restoring cardiac function, but more recently multiple groups have identified resident cardiac progenitor cells that seem to participate in regenerating the heart after injury. Clinically, cells originating from blood or bone marrow have been proven to be safe whereas injection of skeletal myoblasts has been associated with the occurrence of ventricular arrhythmias. Myoblasts can transform into rapidly beating myotubes; however, thus far convincing evidence for electro-mechanical coupling between myoblasts and cardiomyocytes is lacking. Moving forward, mechanistic studies will benefit from the use of genetic markers and Cre/lox reporter systems that are less prone to misinterpretation than fluorescent antibodies, and a more convincing answer regarding therapeutic efficacy will come from adequately powered randomized placebo controlled trials.
Insights
Progenitor cell therapy shows promise for heart repair after myocardial infarction and heart failure. Further research is needed to clarify mechanisms and confirm therapeutic efficacy through rigorous clinical trials.
Area of Science:
- Regenerative Medicine
- Cardiovascular Biology
- Cell Therapy
Background:
- Acute myocardial infarction and chronic congestive heart failure remain significant clinical challenges.
- Progenitor cell therapy is being investigated for cardiac repair and functional improvement.
- Mechanisms of action and the potential for cell trans-differentiation are not fully understood.
Purpose of the Study:
- To review the current state of experimental and clinical research on progenitor cell treatment for cardiac conditions.
- To discuss the efficacy and safety of various cell types used in cardiac regeneration.
- To highlight the need for further mechanistic studies and robust clinical trials.
Main Methods:
- Review of experimental and clinical studies on progenitor cell therapy in cardiac disease.
- Analysis of data regarding cell sources, mechanisms, and clinical outcomes.
- Discussion of emerging techniques for mechanistic investigation.
Main Results:
- Multipotent progenitor cells show potential for improving cardiac perfusion and function.
- Resident cardiac progenitor cells are identified as potential endogenous repair mechanisms.
- Safety profiles vary, with bone marrow-derived cells generally safe, while skeletal myoblasts carry risks like arrhythmias.
Conclusions:
- While progenitor cells offer therapeutic potential for heart disease, their precise mechanisms and efficacy require further elucidation.
- Resident cardiac progenitor cells represent a promising avenue for cardiac regeneration.
- Future research must employ advanced techniques and well-designed, randomized controlled trials to definitively assess therapeutic benefits.
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