ADAMTS1, a putative anti-angiogenic factor, is decreased in human prostate cancer
2009 (English)In: BJU International, ISSN 1464-4096, E-ISSN 1464-410X, Vol. 104, no 11, 1786-1790 p.Article in journal (Refereed) Published
OBJECTIVE: To investigate the expression of 'ADAM metallopeptidase with thrombospondin type I motif, 1' (ADAMTS1) in human prostate cancer, and to study its relationship to microvessel density (MVD) and metastasis. ADAMTS1 has been described as an anti-angiogenic and antitumour factor, but its function in prostate cancer is unknown. PATIENTS AND METHODS: ADAMTS1 expression was evaluated by immunohistochemistry in specimens obtained by transurethral resection of the prostate from patients with hormone-naïve and hormone-refractory prostate tumours, including adjacent benign tissue. A semiquantitative scoring system was used for evaluating the staining. MVD was quantified by counting the number of CD34-positive blood vessels. RESULTS: ADAMTS1 was strongly expressed in the luminal epithelial cells in benign prostate glands, whereas expression was significantly lower in prostate cancer cells. There was no obvious difference between hormone-naïve and hormone-refractory tumours, and ADAMTS1 expression did not correlate with Gleason score. However, in hormone-refractory tumours from patients with metastatic disease, the expression of ADAMTS1 was significantly lower than in tumours from patients without metastases. Furthermore, the MVD was higher in hormone-refractory than in hormone-naïve tumours and benign tissue, and MVD correlated with Gleason score. There was no association between ADAMTS1 and MVD in the hormone-naïve tumours, while hormone-refractory tumours with low ADAMTS1 expression had a higher MVD than those with moderate/high expression. CONCLUSION: ADAMTS1 expression is decreased in prostate cancer, and might be involved in the early steps of prostate cancer development. Further, ADAMTS1 might have an anti-angiogenic and antimetastatic role in hormone-refractory prostate cancer, where low ADAMTS1 expression is associated with a high MVD and metastasis.
Place, publisher, year, edition, pages
2009. Vol. 104, no 11, 1786-1790 p.
ADAMST1;angiogenesis;androgen independent;microvessel density;prostate cancer
IdentifiersURN: urn:nbn:se:umu:diva-36653DOI: 10.1111/j.1464-410X.2009.08676.xPubMedID: 19522863OAI: oai:DiVA.org:umu-36653DiVA: diva2:355470