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2003 APR 16 - (NewsRx.com & NewsRx.net) -- Guanosine-rich phosphodiester oligodeoxynucleotides (PO ODN) may be an alternative approach to the development of effective and safe vaccine adjuvants, say microbiologists at the University of Marburg.
"The immunostimulatory activity of oligonucleotides containing CpG motifs is well established and represents the basis for an effective vaccine adjuvant. For use in vivo, CpG ODN have to be protected from the attack of nucleases to ensure sustained effectiveness. This is usually accomplished by phosphothioate (PTO) modifications of the ODN's backbone. However, PTO modification may induce undesired effects," said S. Zimmermann and associates.
They tried supplementing the ODN's sequence to "enhance the immunostimulatory activity of CpG phosphodiester ODN."
The researchers reported "that addition of poly-guanosine runs to the 3'-end of a CpG-PO ODN conveys immunostimulatory activity to CpG-PO ODN in vivo ...
Source: HighBeam Research, Guanosine-rich PO ODN may be alternative approach to...