Capturing and profiling adult hair follicle stem cells.
Nat Biotechnol
; 22(4): 411-7, 2004 Apr.
Article
em En
| MEDLINE
| ID: mdl-15024388
ABSTRACT
The hair follicle bulge possesses putative epithelial stem cells. Characterization of these cells has been hampered by the inability to target bulge cells genetically. Here, we use a Keratin1-15 (Krt1-15, also known as K15) promoter to target mouse bulge cells with an inducible Cre recombinase construct or with the gene encoding enhanced green fluorescent protein (EGFP), which allow for lineage analysis and for isolation of the cells. We show that bulge cells in adult mice generate all epithelial cell types within the intact follicle and hair during normal hair follicle cycling. After isolation, adult Krt1-15-EGFP-positive cells reconstituted all components of the cutaneous epithelium and had a higher proliferative potential than Krt1-15-EGFP-negative cells. Genetic profiling of hair follicle stem cells revealed several known and unknown receptors and signaling pathways important for maintaining the stem cell phenotype. Ultimately, these findings provide potential targets for the treatment of hair loss and other disorders of skin and hair.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Células-Tronco
/
Técnicas Genéticas
/
Folículo Piloso
/
Células Epiteliais
Limite:
Animals
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article