Enzymatic synthesis of 2′-ara and 2′-deoxy analogues of c-di-GMP
摘要:
The substrate specificity of recombinant full-length diguanylate cyclase (DGC) of Thermotoga maritima with mutant allosteric site was investigated. It has been originally shown that the enzyme could use GTP closest analogues - 2 '-deoxyguanosine-5 '-triphosphate (dGTP) and 9-beta-D-arabinofuranosyl-guanine-5 '-triphosphate (araGTP) as the substrates. The first demonstrations of an enzymatic synthesis of bis-(3 '-5 ')-cyclic dimeric deoxyguanosine monophosphate (c-di-dGMP) and the previously unknown bis-(3 '-5 ')-cyclic dimeric araguanosine monophosphate (c-di-araGMP) using DGC of T. maritima in the form of inclusion bodies have been provided.
Provided herein are immunoconjugates comprising an anti-DC-SIGN antibody conjugated to a STING agonist. Also disclosed are methods of making the immunoconjugates and methods of treating cancer using the immunoconjugates.