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Degradation of basement membrane collagens by metalloproteases released by human, murine and amphibian tumours

Degradation of basement membrane collagens by metalloproteases released by human, murine and... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Pathology Wiley

Degradation of basement membrane collagens by metalloproteases released by human, murine and amphibian tumours

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References (23)

Publisher
Wiley
Copyright
Copyright © 1984 John Wiley & Sons, Ltd.
ISSN
0022-3417
eISSN
1096-9896
DOI
10.1002/path.1711430307
pmid
6431064
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

The Journal of PathologyWiley

Published: Jul 1, 1984

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