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Rational design of new CpG oligonucleotides that combine B cell activation with high IFN-alpha induction in plasmacytoid dendritic cells.
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2003 (English)In: European Journal of Immunology, ISSN 0014-2980, E-ISSN 1521-4141, Vol. 33, no 6, 1633-41 p.Article in journal (Refereed) Published
Abstract [en]

Two different types of CpG motif-containing oligonucleotides (CpG ODN) have been described: CpG-A with high induction of IFN-alpha in plasmacytoid dendritic cells; and CpG-B with little induction of IFN-alpha, but potent activation of B cells. In this study, we demonstrate that CpG-A fail to activate B cells unless plasmacytoid dendritic cells are present. We identified a new set of CpG ODN sequences which induces high levels of IFN-alpha in plasmacytoid dendritic cells but remains capable of directly activating B cells. These new CpG ODN (termed CpG-C) are more potent stimulants of B cells than CpG-B due to their ability of directly and indirectly (via plasmacytoid dendritic cells) activating B cells. The sequence of CpG-C combines structural elements of both CpG-A and CpG-B. The most potent sequence, M362, contains a 5'-end 'TCGTCG-motif' and a 'GTCGTT-motif', both of which are present in CpG-B (ODN 2006); a palindromic sequence characteristic for CpG-A (ODN 2216); but no poly G motif required for CpG-A. In conclusion, we defined the first CpG-containing sequences that potently activate both TLR9-expressing immune cell subsets in humans, the plasmacytoid dendritic cell and the B cell. CpG-C may allow for improved therapeutic immuno-modulation in vivo.

Place, publisher, year, edition, pages
2003. Vol. 33, no 6, 1633-41 p.
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Clinical Medicine
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URN: urn:nbn:se:uu:diva-161372DOI: 10.1002/eji.200323813PubMedID: 12778481OAI: oai:DiVA.org:uu-161372DiVA: diva2:455996
Available from: 2011-11-11 Created: 2011-11-11 Last updated: 2017-12-08

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Lubenow, Norbert

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