Complementary DNA for human glioblastoma-derived T cell suppressor factor, a novel member of the transforming growth factor-beta gene family.
Article Details
- CitationCopy to clipboard
de Martin R, Haendler B, Hofer-Warbinek R, Gaugitsch H, Wrann M, Schlusener H, Seifert JM, Bodmer S, Fontana A, Hofer E
Complementary DNA for human glioblastoma-derived T cell suppressor factor, a novel member of the transforming growth factor-beta gene family.
EMBO J. 1987 Dec 1;6(12):3673-7.
- PubMed ID
- 3322813 [ View in PubMed]
- Abstract
Human glioblastoma cells secrete a peptide, termed glioblastoma-derived T cell suppressor factor (G-TsF), which has suppressive effects on interleukin-2-dependent T cell growth. As shown here, complementary DNA for G-TsF reveals that G-TsF shares 71% amino acid homology with transforming growth factor-beta (TGF-beta). In analogy to TGF-beta it is apparently synthesized as the carboxy-terminal end of a precursor polypeptide which undergoes proteolytic cleavage to yield the 112 amino-acid-long mature form of G-TsF. Comparison of the amino-terminal sequence of G-TsF with that of porcine TGF-beta 2 and bovine cartilage-inducing factor B shows complete homology, which indicates that we have cloned the human analogue of these factors. It is tempting to consider a role for G-TsF in tumor growth where it may enhance tumor cell proliferation in an autocrine way and/or reduce immunosurveillance of tumor development.