Architecture of Reconstructed Epidermis on Collagen Lattices Varies according to the Method Used: A Comparative Study
作者:
M.C. Lenoir,
B.A. Bernard,
期刊:
Skin Pharmacology and Physiology
(Karger Available online 1990)
卷期:
Volume 3,
issue 2
页码: 97-106
ISSN:1660-5527
年代: 1990
DOI:10.1159/000210856
出版商: S. Karger AG
关键词: Human epidermis;In vitro reconstruction;Dermal equivalent;Hair follicle;Outer root sheath cells;Keratin 67 kDa;Air exposure
数据来源: Karger
摘要:
Epidermis was obtained in vitro after air exposure of keratinocyte cultures grown on a dermal equivalent. Some cultures were established from enzymatically dissociated keratinocytes of either interfollicular epidermis or hair follicle outer root sheath. Others resulted from centrifugal outgrowth of epidermal sheet, out of skin biopsies or hair follicles, which were directly implanted into dermal equivalents. Whatever the system used, a multilayered epidermis was obtained with an overall architecture resembling that of human epidermis. However, depending on the tissue culture method used and the source of keratinocytes, significant differences were observed. The most striking finding was the difference in 67 kDa keratin expression: the only case where it was strictly suprabasal and homogeneously expressed in the cytoplasm of the cells, as in normal epidermis, was found in the epidermis obtained from hair follicle explants. With the other methods, the expression of this marker was delayed and patchy. These results are discussed in terms of possible intrinsic differences between interfollicular and follicular keratinocytes.
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