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Hyaluronan content in experimental carcinoma is not correlated to interstitial fluid pressure.
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
Department of Genetics and Pathology.
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2003 (English)In: Biochem. Biophys. Res. Commun., Vol. 305, 1017-1023 p.Article in journal (Refereed) Published
Abstract [en]

Mechanism(s) for generation of the high tumor interstitial fluid pressure (TIFP) that is characteristic of carcinoma is not known. We investigated the role of hyaluronan, the major water-binding polysaccharide of the extracellular matrix, for the generation of a high TIFP. A human anaplastic thyroid carcinoma (KAT-4) xenografted to athymic mice and a syngeneic rat colon carcinoma (PROb) were used. Neither KAT-4 nor PROb cells produced hyaluronan (HA) in culture, however, both cell lines produced factors that stimulated HA-synthesis by cultured fibroblasts. Modulating hyaluronan levels by transfection of PROb carcinoma cells with hyaluronan synthase-2 revealed no correlation between hyaluronan content and TIFP. Furthermore, lowering of TIFP by treating KAT-4 tumors with a specific inhibitor of TGF-beta 1 and -beta 3 did not change the concentration of hyaluronan in the tumors. In summary, our results suggest that a modulation of hyaluronan content is not a major pathogenetic mechanism for the generation of the characteristically high TIFP in malignant carcinomas.

Place, publisher, year, edition, pages
2003. Vol. 305, 1017-1023 p.
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URN: urn:nbn:se:uu:diva-73597OAI: oai:DiVA.org:uu-73597DiVA: diva2:101507
Available from: 2007-03-26 Created: 2007-03-26 Last updated: 2017-11-10

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Jacobson, AnnicaRoswall, PernillaSundberg, ChristianRubin, KristoferHeldin, Nils-Erik

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