Abstract
Background aims
The goal was to induce the transdifferentiation (or conversion) of human adipose-derived
stem cells to cardiomyocytes using an intracellular extract obtained from adult human
heart tissue.
Methods
Human adult stem cells from lipoaspirates were transiently permeabilized, exposed
to human atrial extracts and allowed to recover in culture.
Results
After 21 days, the cells acquired a cardiomyocyte phenotype, as demonstrated by morphologic
changes (appearance of binucleate, striated cells and branching fibers), immunofluorescence
detection of cardiac-specific markers (connexin-43, sarcomeric α-actinin, cardiac
troponin I and T, and desmin) and the presence of cardiomyocyte-related genes analyzed
by reverse transcription–polymerase chain reaction (cardiac myosin light chain 1,
α-cardiac actin, cardiac troponin T and cardiac β-myosin).
Conclusions
We have demonstrated for the first time that adult cardiomyocytes obtained from human
donors retain the capacity to induce cardiomyocyte differentiation of mesenchymal
stromal cells. The use of autologous extracts for reprogramming adult stem cells may
have potential therapeutic implications for treating heart disease.
Key Words
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Article info
Publication history
Accepted:
December 3,
2009
Received:
September 14,
2009
Identification
Copyright
© 2010 International Society for Cellular Therapy. Published by Elsevier Inc. All rights reserved.