ODN 2088 control
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TLR9 Antagonist - Negative control for ODN 2088
Negative control for ODN 2088
Toll-like receptor 9 (TLR9) recognizes specific unmethylated CpG oligonucleotide (ODN) sequences that distinguish microbial DNA from mammalian DNA.
Recent studies suggest the existence of DNA sequences that can neutralize the stimulatory effect of CpG ODNs .
These sequences are characterized by three consecutive Gs downstream of a C or A, addition of a fourth G (G-tetrads) increases the inhibitory capability.
The most potent inhibitory sequences are (TTAGGG)4 found in mammalian telomeres  and ODN 2088 which derives from a stimulatory ODN by replacement of 3 bases .
Inhibitory ODNs act by disrupting the colocalization of CpG ODNs with TLR9 in endosomal vesicles without affecting cellular binding and uptake.
ODN 2088 Control is a negative control for the inhibitory ODN 2088.
1. Krieg AM. et al., 1998. Sequence motifs in adenoviral DNA block immune activation by stimulatory CpG motifs. Proc Natl Acad Sci USA. 95(21): 12631-6.
2. Gursel I. et al., 2003. Repetitive elements in mammalian telomeres suppress bacterial DNA-induced immune activation. J Immunol. 171(3):1393-400.
3. Stunz LL. et al., 2002. Inhibitory oligodinucleotides specifically block effects of stimulatory CpG oligonucleotides in B cells. Eur J Immunol. 32(5): 1212-22.
Working concentration: 100 nM - 10 µM
Solubility: 2.5 mg/ml in water
ODN 2088 Control sequence
5’- tcc tga gct tga agt -3’ (15 mer)
Note: Bases are phosphorothioate (nuclease resistant).
- The absence of bacterial contamination (e.g. lipoproteins and endotoxins) has been confirmed using HEK-Blue™ TLR2 and HEK-Blue™ TLR4 cells.
ODN 2088 Control is available in three quantities:
- 200 μg (41 nmol): tlrl-2088c (formerly tlrl-minhodnc)
- 1 mg (205 nmol): tlrl-2088c-1 (formerly tlrl-minhodnc-1)
- 5 mg (1.025 mmol): tlrl-2088c-5 (formerly tlrl-minhodnc-5)
- 1.5 ml endotoxin-free water
ODN 2088 Control is shipped at room temperature.
Upon receipt, store at -20 °C.Back to the top