ODN 21798

ODN 21798

Oligodeoxyribonucleotides containing CpG motifs (CpG ODNs) are widely used for activation of immune cells, such as human PBMCs, murine splenocytes or isolated immune cells, e.g., B cells and pDCs. They also activate signalling in TLR9-expressing recombinant cell lines.
ODN 21798 is a P-class ODN for the activation of B cells and pDCs. Compared to C-class ODNs, P-class ODNs have a higher efficiency.

Background information

TLR9 is a prominent member of the toll-like-receptor (TLR) family recognizing pathogen-associated molecular patterns. TLR9 recognizes specifically unmethylated CpG motifs in bacterial DNA leading to activation of immune cells
. These effects can be mimicked by short synthetical oligodeoxyribonucleotides (ODNs) containing unmethylated CpG motifs
Several classes of CpG ODN have been identified and can be distinguished by their effects on certain cell types. A-class ODNs containing 5’ and 3’ G-rich stretches induce high levels of type I IFN but show low activation of B cell proliferation. B-class ODNs activate B cells and TLR9-dependent NFkB signalling in recombinant cell lines but show low induction of IFN-α. C-class ODN induce high amounts of IFN-α and activate B cells. The recently discovered new P-Class ODNs show similar but superior properties to C-class ODNs.


P-class ODN for activation of B cells and pDCs with higher efficiency compared to C-class ODN.
P-class ODN can form multimeric structures.
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