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Sökning: swepub > Umeå universitet > Annan publikation > Bergh Anders

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  • Adamo, Hanibal, et al. (författare)
  • Prostate cancer induces C/EBPβ expression in surrounding epithelial cells which relates to tumor aggressiveness and patient outcome
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Implantation of rat prostate cancer cells into the normal rat prostate results in tumor-stimulating adaptations in the tumor-bearing organ. Similar changes are seen in prostate cancer patients and they are related to outcome. One gene previously found to be upregulated in the non-malignant part of a tumor-bearing prostate lobe in rats was the transcription factor CCAAT/enhancer-binding protein-β (C/EBPβ). To explore this further, we examined C/EBPβ expression by quantitative RT-PCR, immunohistochemistry, and western blot in normal rat prostate tissue surrounding slow-growing non-metastatic Dunning G, rapidly growing poorly metastatic (AT-1), and rapidly growing highly metastatic (MatLyLu) rat prostate tumors―and also by immunohistochemistry in a tissue microarray (TMA) from prostate cancer patients managed by watchful waiting.In rats, C/EBPβ mRNA expression was upregulated in the surrounding tumor-bearing prostate lobe. In tumors and in the surrounding non-malignant prostate tissue, C/EBPβ was detected by immunohistochemistry in some epithelial cells and in infiltrating macrophages. The magnitude of glandular epithelial C/EBPβ expression in the tumor-bearing prostates was associated with tumor size, with distance to the tumor, and with tumor cell metastatic capacity.In prostate cancer patients, high expression of C/EBPβ in glandular epithelial cells in the surrounding tumor-bearing tissue was associated with accumulation of M1 macrophages (iNOS+) and a favorable outcome. High expression of C/EBPβ in tumor epithelial cells was associated with high Gleason score, high tumor cell proliferation, the presence of metastases at diagnosis, and poor outcome. 
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  • Jernberg, Emma, et al. (författare)
  • Molecular features of prostate cancer bone metastases harboring androgen receptor gene amplification
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • The relation between AR amplification and other mechanisms behind castration-resistance in prostate cancer, such as increased expression of AR splice variants and steroid-converting enzymes in CRPC metastases, has been poorly examined. Specific aims of this study were therefore to examine AR amplification in hormone-naïve and castration-resistant prostate cancer (CRPC) bone metastases and to explore molecular and functional consequences of this, with the long-term goal of identifying molecular targets for treatment of CRPC bone metastases. AR amplification was assessed by fluorescence in situ hybridization and verified in 16 (53 %) of the CRPC bone metastases (n=30), and in none of the untreated bone metastases (n=10). AR amplification was associated with increased expression of AR and its constitutively active AR-V7 splice variant as well as with co-amplification of genes in the AR proximity at Xq12, such as of YIPF6. Furthermore, gene expression pattern pointed at decreased osteoclast activity, and consequently decreased bone resorption and increased bone mineral density in AR amplified metastases. In conclusion, our results indicated a sclerotic phenotype in CRPC bone metastases with AR amplification that may be of both biological and clinical relevance. This is a novel hypothesis that requires to be thoroughly examined.
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  • Resultat 1-10 av 18
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övrigt vetenskapligt/konstnärligt (17)
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Bergh, Anders (18)Ta bort avgränsningen
Thysell, Elin (5)
Stattin, Pär (4)
Widmark, Anders (4)
Ljungberg, Börje (3)
Hedman, Håkan (2)
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Lärosäte
Umeå universitet  (18)Ta bort avgränsningen
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