Abstract:
:We have studied the in vitro invasive properties of 3 cell lines derived from the co-transfection of rat embryo fibroblasts (REF) with EIA genes deficient in exon 2 and T24-ras. All 3 cell lines showed invasive properties at passage 10 after isolation. Invasive cells expressed elevated levels of stromelysin-1 and reduced levels of 68-kDa type-IV collagenase compared with untransfected REF. In 2 cell lines the invasive capacity increased during in vitro propagation. The expression of stromelysin-1 increased during this process, whereas 68-kDa type-IV collagenase was persistently expressed at reduced levels. In the third clone analyzed, the invasive capacity decreased during culture, in parallel with decreased expression of stromelysin-1. The low level of stromelysin-1 expression observed in this cell line did not result from loss of AP-1-transcription-factor activity, and was not reversed by phorbol-ester treatment.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Engel G,Popowicz P,Marshall H,Norling G,Svensson C,Auer G,Akusjärvi G,Linder Sdoi
10.1002/ijc.2910510516keywords:
subject
Has Abstractpub_date
1992-07-09 00:00:00pages
761-6issue
5eissn
0020-7136issn
1097-0215journal_volume
51pub_type
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