Document Detail

Establishment of epithelial cell lines from human and mouse thymus immortalized by the 12S adenoviral E1a gene product.
MedLine Citation:
PMID:  1723817     Owner:  NLM     Status:  MEDLINE    
To understand the role of thymic epithelial cells in the development of immature thymocytes, the establishment and cloning of thymic epithelial cell lines must be required. In the present study, we established human and mouse thymic epithelial cell lines through the immortalization by the transfection of cDNA sequences of adenoviral E1a 12S mRNA. This procedure resulted in the isolation of five stable cell lines (one human cell line and four mouse cell lines). These cell lines were positive in cytokeratin demonstrated by immunohistochemistry. Electron microscopic study revealed that they had bundles of tonofilaments and desmosome-like tight junctions. These findings indicate that the cell lines immortalized by E1a gene have retained the properties of epithelial cells. MHC class II antigens were not expressed on these cell lines. When interferon-gamma was added to the cultured epithelial cell lines, MHC class II antigens were induced in their cytoplasm and on their surface membrane, demonstrated by immunohistochemical and immunofluorescent studies. It is suggested that these stable cell lines from human and mouse thymus might serve a good tool for the further study of thymocytes differentiation and of unknown cytokines derived from thymus epithelium.
T Hibi; T Fujisawa; T Kanai; A Akatsuka; S Habu; H Handa; M Tsuchiya
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Thymus     Volume:  18     ISSN:  0165-6090     ISO Abbreviation:  Thymus     Publication Date:  1991 Nov 
Date Detail:
Created Date:  1992-03-19     Completed Date:  1992-03-19     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8009032     Medline TA:  Thymus     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  155-67     Citation Subset:  IM    
Department of Internal Medicine, School of Medicine, Keio University.
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MeSH Terms
Cell Division / physiology
Cell Line, Transformed / physiology*,  ultrastructure
Epithelial Cells
Genes, MHC Class II
Genetic Vectors
Keratins / analysis
Thymus Gland / cytology*
Transcription, Genetic
Viral Proteins / genetics
Reg. No./Substance:
0/Viral Proteins; 68238-35-7/Keratins

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