ISSN:
1432-2013
Schlagwort(e):
Key words Anti TGF-β receptor antibody
;
Heat shock protein 70
;
Human skin fibroblast cell
;
Transforming growth factor-β
;
Ultraviolet B
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Medizin
Notizen:
Abstract Ultraviolet B (UVB) alters the expression of heat shock protein 70 (HSP70) in cultured fibroblast cells derived from human skin. However, the nature of the signal transduction pathway remains to be determined. Transforming growth factor-β (TGF-β) has a large variety of biological functions, including cell growth control, modulation of inflammation and immunoregulation. In this study, we examined whether TGF-β is associated with the process of HSP70 expression induced by UVB irradiation. The constitutive expression of TGF-β1 mRNA and HSP70 expression in human skin fibroblast cells were detected using reverse transcription polymerase chain reaction (RT-PCR) and Western blot analysis. The results indicate that: (1) UVB irradiation stimulates HSP70 expression in a dose- and time-dependent manner, (2) constitutive expression of TGF-β1 mRNA is detected after UVB irradiation, the level of which peaks at 4 h after 10 mJ cm–2 of UVB irradiation, (3) HSP70 expression is induced by TGF-β1 without UVB irradiation, and (4) HSP70 expression induction with UVB irradiation is inhibited by preincubation of the cells with the anti-TGF-β type II receptor antibody. Our results suggest that HSP70 expression induced by UVB involves the autocrine signalling of TGF-β production.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s004240050905
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