The present disclosure pertains to the recognition that immune responses mediated by CpG oligonucleotides can be affected by the stereochemistry of modified internucleotidic linkages such as phosphorothioates. In some embodiments, the present disclosure relates to chirally controlled CpG oligonucleotide compositions comprising CpG oligonucleotides comprising multiple modified internucleotidic linkages such as phosphorothioate linkages, wherein the oligonucleotides comprise one or more CpG region motifs having defined stereochemistry patterns of chiral internucleotidic linkages. In some embodiments, CpG oligonucleotides comprising one or more CpG region motifs are capable of agonizing an immune response. In some embodiments, CpG oligonucleotides comprising one or more CpG region motifs are antagonistic. Methods for making and using chirally controlled CpG oligonucleotide compositions are also described. In some embodiments, no immune modulation is desired, and the present disclosure provides methods of identifying chirally controlled oligonucleotide compositions which have decreased immune modulation.
本公开涉及这样一种认识,即 CpG 寡
核苷酸介导的免疫反应可受
硫代磷酸酯等修饰的
核苷酸间连接的立体
化学的影响。在一些实施方案中,本公开涉及手性控制的 CpG 寡
核苷酸组合物,该组合物包含CpG 寡
核苷酸,该CpG 寡
核苷酸包含多个修饰的
核苷酸间连接,如
硫代磷酸酯连接,其中寡
核苷酸包含一个或多个 CpG 区域基序,该 CpG 区域基序具有手性
核苷酸间连接的确定立体
化学模式。在一些实施方案中,包含一个或多个 CpG 区域基团的 CpG 寡
核苷酸能够激动免疫反应。在某些实施方案中,包含一个或多个 CpG 区域基团的 CpG 寡
核苷酸具有拮抗作用。还描述了制作和使用啁啾控制 CpG 寡
核苷酸组合物的方法。在某些实施方案中,不需要免疫调节,本公开提供了确定免疫调节性降低的手性控制寡
核苷酸组合物的方法。