Abstract:
:The aim of this study was to investigate the response to and the physiological consequences of copper-mediated cross-linking of S100A2 and S100A4, two members of the S100 family of EF-hand calcium-binding proteins. As demonstrated by electrophoresis and mass spectrometry techniques S100A2 and S100A4 show formation of cross-links due to copper-mediated oxidation of cysteine residues. For S100A4, but not for S100A2, this results in both increased activation of NFκB and secretion of TNF-α in human A375 and, to a higher extent, in RAGE-transfected melanoma cells. The data suggest that a prooxidative tumor microenvironment enhances proinflammatory and prometastatic action of S100A4.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Haase-Kohn C,Wolf S,Lenk J,Pietzsch Jdoi
10.1016/j.bbrc.2011.08.132subject
Has Abstractpub_date
2011-09-30 00:00:00pages
494-8issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(11)01551-8journal_volume
413pub_type
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