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  • Title: The role of transforming growth factor-beta and its receptors in human prostate smooth muscle cell fibronectin production.
    Author: Butter S, Laping NJ, Pullen M, Grygielko E, Olson B, Brooks DP.
    Journal: Eur J Pharmacol; 2001 Jun 22; 422(1-3):47-52. PubMed ID: 11430912.
    Abstract:
    In the present study, the role of transforming growth factor-beta (TGFbeta) on the production of the extracellular matrix component, fibronectin, in the prostate has been studied. The mRNA levels of fibronectin, TGFbeta and the two TGFbeta receptors, ALK5 (activin like kinase) and type II, were measured using reverse-transcription polymerase chain reaction (RT-PCR). TGFbeta increased fibronectin mRNA and protein (7-fold) in a concentration-dependent fashion. An interesting relationship between the two TGFbeta receptors was found in that TGFbeta caused an upregulation of its type I receptor mRNA (5-6-fold) and a downregulation of the type II receptor mRNA (5-fold). Time-course experiments revealed that the change in expression of the TGFbeta receptors reached maximum at 24 h with an early increase at 4-5 h, whereas the fibronectin gene expression was not significantly stimulated until about 24 h. These data provide evidence that TGFbeta stimulates extracellular matrix production in prostate cells.
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