| Literature DB >> 3467839 |
R Derynck, D V Goeddel, A Ullrich, J U Gutterman, R D Williams, T S Bringman, W H Berger.
Abstract
Human tumors and tumor cell lines were analyzed for the presence of mRNA coding for transforming growth factors alpha and beta (TGF-alpha and -beta) and the epidermal growth factor receptor. TGF-alpha mRNA was not detectable in hematopoietic tumor cell lines but was found in a variety of solid tumor cells, particularly carcinomas. Many of the tumors that contained TGF-alpha mRNA also expressed high levels of epidermal growth factor receptor mRNA. The concentration of TGF-alpha in the media of several tumor cell lines did not necessarily correlate with TGF-alpha mRNA levels, as a substantial fraction of TGF-alpha can remain cell associated. The levels of TGF-beta mRNA in tumor cell lines and tumor specimens were variable, but higher in tumors than in the adjacent normal tissues.Entities:
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Year: 1987 PMID: 3467839
Source DB: PubMed Journal: Cancer Res ISSN: 0008-5472 Impact factor: 12.701