Fibronectin synthesis by human tubular epithelial cells in culture

• Verfasst von: Bürger, Antje [VerfasserIn]
• Verfasst von: Wagner, Christof [VerfasserIn]
• Verfasst von: Viedt-Suelmann, Christiane [VerfasserIn]
• Verfasst von: Reis, Bettina [VerfasserIn]
• Verfasst von: Hug, Friederike [VerfasserIn]
• Verfasst von: Hänsch, Gertrud Maria [VerfasserIn]
• Titel: Fibronectin synthesis by human tubular epithelial cells in culture
• Titelzusatz: Effects of PDGF and TGF-β on synthesis and splicing
• Verf.angabe: Antje Bürger, Christof Wagner, Christiane Viedt, Bettina Reis, Friederike Hug, Gertrud Maria Hänsch
• E-Jahr: 1998
• Jahr: 1 August 1998
• Umfang: 9 S.
• Fussnoten: Artikelversion: 16 Dezember 2015 ; Gesehen am 05.06.2025
• Titel Quelle: Enthalten in: Kidney international
• Ort Quelle: New York, NY : Elsevier, 1972
• Jahr Quelle: 1998
• Band/Heft Quelle: 54(1998), 2, Seite 407-415
• ISSN Quelle: 1523-1755
• DOI: doi:10.1046/j.1523-1755.1998.00009.x
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: epithelial cells
• Sach-SW: extracellular matrix
• Sach-SW: glomerulonephritis
• Sach-SW: interstitial nephritis
• Sach-SW: sclerosis
• K10plus-PPN: 1927574951

Abstract

Fibronectin synthesis by human tubular epithelial cells in culture: Effects of PDGF and TGF-β on synthesis and splicing. - Background - Enhanced synthesis of extracellular matrix proteins including fibronectin (FN) is associated with the development of sclerosis. In this context we studied FN synthesis by tubular epithelial cells in response to transforming growth factor-β (TGF-β) and platelet-derived growth factor (PDGF). - Methods - FN protein synthesis by human tubular epithelial cells in culture (TEC) was measured by biosynthetic labeling and ELISA. Splicing of FN was assessed by RT-PCR and by Northern blotting. - Results - Cultivated TEC synthesized and released FN, the majority of which was deposited as an unsoluble protein and a minor portion (10 to 15%) was released into the supernatant. TGF-β and, to a lesser degree, PDGF, up-regulated FN synthesis. All three FN splice variants (EDA, EDB, and IIICS) were produced. PDGF did not influence the splicing. TGF-β preferentially up-regulated the EDA splice variant, but had no effect on the splicing of the other domains. - Conclusions - PDGF and TGF-β both up-regulate FN synthesis of TEC. TGF-β, but not PDGF, also changed the quality of the de novo synthesized FN, and thus has a different role in the development of sclerosis.