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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1996-3-27
pubmed:abstractText
The pattern of expression of the simian virus 40 (SV40) T antigen gene and resultant dysplasia were re-examined in a line of transgenic mice in which the T antigen gene was under the control of the SV40 early promoter. We found that T antigen expression in the kidney, and resulting dysplastic lesions, occurred exclusively in the distal convoluted tubules and the ascending limbs of Henle. Epidermal growth factor (EGF) expression in the kidney of normal mice was similarly immunolocalized. The correlation between high EGF immunoreactivity in normal mouse tissues and T antigen expression in the transgenic counterpart was also seen in the choroid plexus epithelium and in the submandibular glands of male mice. T antigen was not found in the submandibular gland of transgenic females. Similarly, EGF was only rarely detected in the normal female submandibular gland. In contrast to the correlation between T antigen expression in the transgenic mice and EGF expression in the corresponding tissues of the normal mice, within the dysplastic lesions of the transgenic mice EGF expression was severely diminished. Adenocarcinomas of the male submandibular gland from another line of transgenic mice that expresses the Int-1 transgene, showed similarly reduced levels of immunostaining for EGF. Thus, reduced expression of EGF might be a general feature of dysplasia and tumorigenesis in those tissues that normally express EGF.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0962-8819
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:geneSymbol
int-1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
306-14
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:8589733-Adenocarcinoma, pubmed-meshheading:8589733-Animals, pubmed-meshheading:8589733-Antigens, Viral, Tumor, pubmed-meshheading:8589733-Cattle, pubmed-meshheading:8589733-Choroid Plexus, pubmed-meshheading:8589733-Cricetinae, pubmed-meshheading:8589733-Epidermal Growth Factor, pubmed-meshheading:8589733-Female, pubmed-meshheading:8589733-Gene Expression Regulation, Neoplastic, pubmed-meshheading:8589733-Kidney, pubmed-meshheading:8589733-Kidney Tubules, Distal, pubmed-meshheading:8589733-Male, pubmed-meshheading:8589733-Mice, pubmed-meshheading:8589733-Mice, Transgenic, pubmed-meshheading:8589733-Proto-Oncogene Proteins, pubmed-meshheading:8589733-Simian virus 40, pubmed-meshheading:8589733-Submandibular Gland, pubmed-meshheading:8589733-Submandibular Gland Neoplasms, pubmed-meshheading:8589733-Wnt Proteins, pubmed-meshheading:8589733-Wnt1 Protein, pubmed-meshheading:8589733-Zebrafish Proteins
pubmed:year
1995
pubmed:articleTitle
Relationship between expression of epidermal growth factor and simian virus 40 T antigen in a line of transgenic mice.
pubmed:affiliation
Department of Biology, University of Massachusetts, Amherst 01003, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.