Abstract:
BACKGROUND:Desmoid tumour is a benign, non metastasising neoplasm characterised by an elevated deposition of organic macromolecules in the extracellular matrix (ECM). The matrix metalloproteinases (MMPs) are a family of zinc-dependent proteinases involved in the degradation of ECM macromolecules. The MMPs and their natural inhibitors (TIMPs) have been implicated in tumour growth, invasion and metastasis. In this study we provide evidence that the in vitro cultured cell line from desmoid tumour accumulates more collagen fibres in the ECM than healthy fibroblasts. METHODS:We investigated collagen accumulation by 3H-thymidine incorporation, MMP expression by substrate gel zymography and TIMP expression by Western blot analysis. RESULTS:Desmoid fibroblasts showed a reduction in MMP activity and an increase of type I and III collagen and TIMPs compared to normal fibroblasts. CONCLUSION:The increase in collagen in desmoid fibroblasts was due to inhibited collagen degradation (reduction of MMP activity) rather than to increased collagen synthesis. Adding toremifene, an anti-estrogen triphenylethylene derivate, to desmoid fibroblasts reduced collagen accumulation by decreasing mRNA expression and increasing collagen degradation.
journal_name
BMC Cancerjournal_title
BMC cancerauthors
Balducci C,Lilli C,Stabellini G,Marinucci L,Giustozzi G,Becchetti A,Cagini L,Locci Pdoi
10.1186/1471-2407-5-22keywords:
subject
Has Abstractpub_date
2005-03-01 00:00:00pages
22issn
1471-2407pii
1471-2407-5-22journal_volume
5pub_type
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