Journal
WORLD JOURNAL OF STEM CELLS
Volume 11, Issue 8, Pages 464-475Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.4252/wjsc.v11.i8.464
Keywords
Stem cells; Epigenetics; Self-renewal; In vitro differentiation; Physical stimuli; Stem cell fate; Clinical practice; Cell transplantation
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Mesenchymal stem cells are undifferentiated cells able to acquire different phenotypes under specific stimuli. In vitro manipulation of these cells is focused on understanding stem cell behavior, proliferation and pluripotency. Latest advances in the field of stem cells concern epigenetics and its role in maintaining self-renewal and differentiation capabilities. Chemical and physical stimuli can modulate cell commitment, acting on gene expression of Oct-4, Sox-2 and Nanog, the main stemness markers, and tissue-lineage specific genes. This activation or repression is related to the activity of chromatin-remodeling factors and epigenetic regulators, new targets of many cell therapies. The aim of this review is to afford a view of the current state of in vitro and in vivo stem cell applications, highlighting the strategies used to influence stem cell commitment for current and future cell therapies. Identifying the molecular mechanisms controlling stem cell fate could open up novel strategies for tissue repairing processes and other clinical applications.
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