| abstract |
The present invention provides highly active cyclic-di-nucleotide (CDN) immune stimulators that activate DCs via a recently discovered cytoplasmic receptor known as STING (Stimulator of Interferon Genes), In particular, the CDNs of the present invention are provided in the form of a composition comprising one or more cyclic purine dinucleotides induce human STING-dependent type I interferon production, wherein the cyclic purine dinucleotides present in the composition are 2′-fluoro substituted, bis-3′,5′CDNs, and most preferably one or more 2′,2″-diF-Rp,Rp, bis-3′,5′CDNs. |