Abstract
The epidermis and its related appendages such as the hair follicle constitute the epithelial compartment of the skin. The exact location and distribution of the keratinocyte colony-forming cells within the epidermis or its appendages are unknown. We report that in the rat vibrissa, keratinocyte colony-forming cells are highly clustered in the bulge-containing region. Approximately 95% of the total colonies formed in culture from fractionated vibrissae were in this location and fewer than 4% were located in the matrix area of the follicle. Finer dissection of the bulge-containing region located the colony-forming cells in the small part containing the bulge itself. The segregation of keratinocyte colony-forming cells in the bulge confirms the hypothesis that the bulge is the reservoir of the stem cells responsible for the long-term growth of the hair follicle and perhaps of the epidermis as well.
Dates
Type | When |
---|---|
Created | 19 years, 3 months ago (May 31, 2006, 8:28 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 1:27 p.m.) |
Indexed | 2 months, 1 week ago (June 21, 2025, 2:02 a.m.) |
Issued | 32 years, 1 month ago (Aug. 1, 1993) |
Published | 32 years, 1 month ago (Aug. 1, 1993) |
Published Online | 32 years, 1 month ago (Aug. 1, 1993) |
Published Print | 32 years, 1 month ago (Aug. 1, 1993) |
@article{Kobayashi_1993, title={Segregation of keratinocyte colony-forming cells in the bulge of the rat vibrissa.}, volume={90}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.90.15.7391}, DOI={10.1073/pnas.90.15.7391}, number={15}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Kobayashi, K and Rochat, A and Barrandon, Y}, year={1993}, month=aug, pages={7391–7395} }