Differential and competitive activation of human immune cells by distinct classes of CpG oligodeoxynucleotide


GÜRSEL M. , Verthelyi D., Gursel I., Ishii K., Klinman D.

JOURNAL OF LEUKOCYTE BIOLOGY, cilt.71, ss.813-820, 2002 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 71 Konu: 5
  • Basım Tarihi: 2002
  • Dergi Adı: JOURNAL OF LEUKOCYTE BIOLOGY
  • Sayfa Sayıları: ss.813-820

Özet

Synthetic oligodeoxynucleotides (ODN) expressing "CpG motifs" show promise as immune adjuvants, antiallergens, anticancer, and immuno-protective agents. Two structurally distinct classes of CpG ODN have been identified that stimulate human PBMC. This work establishes that both types of ODN bind to and are internalized by the same individual B cells, NK cells, and monocytes. However, the intracellular localization of "D" and "K" ODN differs, as does their functional activity: "K" type ODN trigger monocytes and B cells to proliferate and secrete IL-6 and IgM, whereas "D" type ODN induce NK cells to produce IFN-gamma and monocytes to differentiate into CD83(+)/CD86(+) dendritic cells. In monocytes, these two types of ODN (which differ in backbone composition and CpG motif) cross-inhibit one another's activity. Thus, different types of CpG ODN have distinct and in some cases incompatible effects on the same cells, a finding with important implications for the therapeutic use of these agents.