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. 1982 Aug;108(2):231–239.

Propagation of normal human epithelial cell populations using an in vivo culture system. Description and applications.

A J Klein-Szanto 1, M Terzaghi 1, L D Mirkin 1, D Martin 1, M Shiba 1
PMCID: PMC1916078  PMID: 6821529

Abstract

A new model using xenotransplanted human epithelia was developed for the study of toxic and carcinogenic effects of chemicals. Epithelial cells from the respiratory tract of 4 male and 3 female premature and fullterm fetuses were enzymatically removed and inoculated into deepithelialized rat tracheas. These were sealed at both ends and transplanted subcutaneously into nude mice. After 3-4 weeks, a normal mucociliary epithelium covered the tracheal lumen. At this stage the epithelial cells could be isolated again and transplanted into new denuded rat tracheas. This passaging could be repeated up to six times, each permitting an amplification factor of approximately 3. Tracheal transplants containing cells of human origin (in vivo Passages 2-4) were treated with 7,12-dimethylbenz(a)anthracene. Hyperplasias, squamous metaplasias, and dysplasias were seen 1-8 weeks after initiation of treatment, indicating that the responses of human and rodent epithelial cells to polycyclic aromatic hydrocarbons are similar. Initial experiments with skin and esophageal epithelia suggest that other covering epithelia could also be used in this fashion for evaluation of toxicants and carcinogens that are likely to come into contact with these tissues.

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