Abstract:
:Interleukin-11 (IL-11) and S100P are oncoproteins co-expressed in numerous cancers, which might favor their interaction during oncogenesis. We have explored the possibility of this interaction by surface plasmon resonance spectroscopy, intrinsic fluorescence, and chemical crosslinking. Recombinant forms of IL-11 and S100P interact with each other under physiological level of calcium ions. IL-11 molecule has at least two S100P-binding sites with dissociation constants of 32 nM and 288 nM, which is 5-13-fold lower than its affinity to extracellular domain of IL-11 receptor subunit α. S100P does not alter IL-11-induced STAT3 activation in HEK293 cells co-expressing IL-11 receptors, but could affect other tumorigenic signaling pathways. The highly specific IL-11 - S100P interaction occurring under physiologically relevant conditions should be taken into consideration upon development of the antineoplastics inhibiting IL-11 signaling.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Kazakov AS,Sokolov AS,Rastrygina VA,Solovyev VV,Ismailov RG,Mikhailov RV,Ulitin AB,Yakovenko AR,Mirzabekov TA,Permyakov EA,Permyakov SEdoi
10.1016/j.bbrc.2015.11.024subject
Has Abstractpub_date
2015-12-25 00:00:00pages
733-8issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(15)30894-9journal_volume
468pub_type
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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