ABSTRACT
Adult mesenchymal stem cells (MSCs) are adherent stromal cells able to self-renew
and differentiate into a wide variety of cells and tissues. MSCs can be obtained from
distinct tissue sources and have turned out to be successfully manipulated in vitro.
As adult stem cells, MSCs are less tumorigenic than their embryonic correlatives and
posses another unique characteristic which is their almost null immunogenicity. Moreover,
these cells seem to be immunosuppressive in vitro. These facts together with others
became MSCs a promising subject of study for future approaches in bioengineering and
cell-based therapy. On the other hand, new strategies to achieve long-term integration
as well as efficient differentiation of these cells at the area of the lesion are
still challenging, and the signalling pathways ruling these processes are not completely
well characterized. In this review, we are going summarize the general landscape and
current status of the MSC tool as well as their wide potential in tissue engineering,
from neuronal to tooth replacement. Highlights and pitfalls for further clinical applications
will be discussed. (Eur J Dent 2009;3:240-249)
Key words:
Adult mesenchymal stem cell - Dental pulp - Differentiation - Cell-based therapy -
Tissue engineering - Tooth replacement