Digitale Medien
Oxford, UK
:
Blackwell Publishing Ltd
FEMS microbiology letters
159 (1998), S. 0
ISSN:
1574-6968
Quelle:
Blackwell Publishing Journal Backfiles 1879-2005
Thema:
Biologie
Notizen:
The interaction of Entamoeba histolytica trophozoites with collagen induces the synthesis and release of electron-dense granules containing a collagenase activity that is an important factor in the pathogenicity of the parasite. The binding is thought to be mediated by an ‘integrin-like’ collagen receptor. In the signal transduction mechanisms activated by collagen, pp125FAK and p42MAPK are involved. Using immunoprecipitation assays coupled to Western blot analysis, we demonstrate here the collagen-dependent association of paxillin and Src with pp125FAK. Furthermore, collagen induces a time-dependent increase in the DNA binding activity of the activator protein 1, which is well correlated with an increase in Fos expression. Our results suggest that a stimulus-transcription coupling triggered by collagen in E. histolytica trophozoites might activate or repress genes involved in tissue invasiveness.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1111/j.1574-6968.1998.tb12859.x
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