Abstract:
:Mild modification of intravenous immunoglobulin (IVIG) has been reported to result in enhanced polyspecificity and leveraged therapeutic effects in animal models of inflammation. Here, we observed that IVIG modification by ferrous ions, heme or low pH exposure, shifted the repertoires of specificities in different directions. Ferrous ions exposed Fe(II)-IVIG, but not heme or low pH exposed IVIG, showed increased pro-apoptotic effects on neutrophil granulocytes that relied on a FAS-dependent mechanism. These effects were also observed in human neutrophils primed by inflammatory mediators or rheumatoid arthritis joint fluid in vitro, or patient neutrophils ex vivo from acute Crohn's disease. These observations indicate that IVIG-mediated effects on cells can be enhanced by IVIG modification, yet specific modification conditions may be required to target specific molecular pathways and eventually to enhance the therapeutic potential.
journal_name
Front Immunoljournal_title
Frontiers in immunologyauthors
Graeter S,Schneider C,Verschoor D,von Däniken S,Seibold F,Yawalkar N,Villiger P,Dimitrov JD,Smith DF,Cummings RD,Simon HU,Vassilev T,von Gunten Sdoi
10.3389/fimmu.2020.00973subject
Has Abstractpub_date
2020-05-19 00:00:00pages
973issn
1664-3224journal_volume
11pub_type
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