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Targeting castration-induced tumour hypoxia enhances the acute effects of castration therapy in a rat prostate cancer model
Umeå University, Faculty of Medicine, Department of Medical Biosciences, Pathology. Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Urology and Andrology.
Umeå University, Faculty of Medicine, Department of Medical Biosciences, Pathology.
Umeå University, Faculty of Medicine, Department of Medical Biosciences, Pathology.
2011 (English)In: BJU International, ISSN 1464-4096, E-ISSN 1464-410X, Vol. 107, no 11, p. 1818-1824Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: •  To explore the effects of castration therapy, the standard treatment for advanced prostate cancer, in relation to tumour hypoxia and to elicit its importance for the short- and long-term therapeutic response.

MATERIAL AND METHODS: •  We used the androgen-sensitive rat Dunning H prostate tumour model that transiently responds to castration treatment followed by a subsequent relapse, much like the scenario in human patients. •  Tumour tissues were analysed using stereological methods in intact, 1 and 7 days after castration therapy.

RESULTS: •  Hypoxia was transiently up-regulated after castration therapy and correlated with the induction of tumour cell apoptosis. •  When castration therapy was combined with tirapazamine (TPZ), a drug that targets hypoxic cells and the vasculature, the effects on tumour cell apoptosis and tumour volume were enhanced in comparison to either castration or TPZ alone.

CONCLUSION: •  The present study suggests that castration-induced tumour hypoxia is a novel target for therapy.

Place, publisher, year, edition, pages
2011. Vol. 107, no 11, p. 1818-1824
Keywords [en]
hypoxia;castration;tirapazamine;prostate;Dunning H
National Category
Cell and Molecular Biology
Research subject
Pathology
Identifiers
URN: urn:nbn:se:umu:diva-40758DOI: 10.1111/j.1464-410X.2010.09690.xPubMedID: 20860653OAI: oai:DiVA.org:umu-40758DiVA, id: diva2:402662
Available from: 2011-03-09 Created: 2011-03-09 Last updated: 2018-06-08Bibliographically approved

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Rudolfsson, Stina HäggströmKilter, SigridBergh, Anders

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