Isolation of human nasoseptal chondrogenic cells: a promise for cartilage engineering.
| Autor: | do Amaral RJ; Programa de Pós-graduação em Ciências Morfológicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. ronaldojfca@yahoo.com.br, Pedrosa Cda S, Kochem MC, Silva KR, Aniceto M, Claudio-da-Silva C, Borojevic R, Baptista LS |
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| Jazyk: | angličtina |
| Zdroj: | Stem cell research [Stem Cell Res] 2012 Mar; Vol. 8 (2), pp. 292-9. Date of Electronic Publication: 2011 Oct 11. |
| DOI: | 10.1016/j.scr.2011.09.006 |
| Abstrakt: | In cartilaginous tissues, perichondrium cambium layer may be the source of new cartilage. Human nasal septal perichondrium is considered to be a homogeneous structure in which some authors do not recognize the perichondrium internal zone or the cambium layer as a layer distinct from adjacent cartilage surface. In the present study, we isolated a chondrogenic cell population from human nasal septal cartilage surface zone. Nasoseptal chondrogenic cells were positive for surface markers described for mesenchymal stem cells, with exception of CD146, a perivascular cell marker, which is consistent with their avascular niche in cartilage. Although only Sox-9 was constitutively expressed, they also revealed osteogenic and chondrogenic, but not adipogenic, potentials in vitro, suggesting a more restricted lineage potential compared to mesenchymal stem cells. Interestingly, even in absence of chondrogenic growth factors in the pellet culture system, nasoseptal chondrogenic cells had a capacity to synthesize sulfated glycosaminoglycans, large amounts of collagen type II and to a lesser extent collagen type I. The spontaneous chondrogenic potential of this population of cells indicates that they may be a possible source for cartilage tissue engineering. Besides, the pellet culture system using nasoseptal chondrogenic cells may also be a model for studies of chondrogenesis. (Copyright © 2011 Elsevier B.V. All rights reserved.) |
| Databáze: | MEDLINE |
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