The Adventitia: A Progenitor Cell Niche for the Vessel Wall
Author(s) -
Mark W. Majesky,
Xiu Rong Dong,
Virginia J. Hoglund,
Günter Daum,
William M. Mahoney
Publication year - 2011
Publication title -
cells tissues organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.662
H-Index - 82
ISSN - 1422-6405
DOI - 10.1159/000331413
Subject(s) - adventitia , progenitor cell , microbiology and biotechnology , stem cell , progenitor , anatomy , biology , endothelial stem cell , pathology , medicine , in vitro , biochemistry
Recent observations suggest that the adventitial layer of blood vessels exhibits properties resembling a stem/progenitor cell niche. Progenitor cells have been isolated from the adventitia of both murine and human blood vessels with the potential to form endothelial cells, mural cells, osteogenic cells, and adipocytes. These progenitors appear to cluster at or near the border zone between the outer media and inner adventitia. In the mouse, this border zone region corresponds to a localized site of sonic hedgehog signaling in the artery wall. This brief review will discuss the emerging evidence that the tunica adventitia may provide a niche-like signaling environment for resident progenitor cells and will address the role of the adventitia in growth, remodeling, and repair of the artery wall.
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