Premium
Degradation of basement membrane collagens by metalloproteases released by human, murine and amphibian tumours
Author(s) -
Shields S. E.,
Ogilvie D. J.,
McKinnell R. G.,
Tarin D.
Publication year - 1984
Publication title -
the journal of pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.964
H-Index - 184
eISSN - 1096-9896
pISSN - 0022-3417
DOI - 10.1002/path.1711430307
Subject(s) - basement membrane , collagenase , secretion , metalloproteinase , microbial collagenase , enzyme , stromal cell , biology , matrix metalloproteinase , protease , microbiology and biotechnology , biochemistry , type iv collagen , chemistry , cell , cancer research , laminin
In this investigation it has been found that naturally‐occurring (i.e. indigenous, not transplanted) tumours of diverse organs in a spectrum of vertebrates from frogs to man can secrete enzymes which degrade basement membrane collagens (types IV and V). The enzymes are inhibited by chelating agents (EDTA) but not by other protease antagonists and are, therefore, specific metalloproteases. Individual tumours do not necessarily secrete collagenases active against all collagen types (I, IV and V) and release of these different enzymes does not, therefore, appear to be coordinated. These biochemical findings support those reported for serially transplanted tumour cell lines and provide a plausible mechanism for the destruction of basement membranes and stromal collagen fibres observed morphologically in tumour spread.