Figure 2. Transfer of mature DC induces diabetes in RIP-gp mice.

Bone marrow derived DCs were generated and cultured overnight in media containing (A) no maturation stimulus, (B) CpG ODN 1826 (10 μM), (C) LPS (10 ng/ml), or (D) imiquimod acetate (25 μM), prior to pulsing with gp33–41, gp276–286, and gp61–80 peptides and tail vein infusion to RIP-gp mice at 2×10⁶ DC/mouse. Blood glucose levels were followed after vaccination. Each line represents an individual mouse. (E) Quantification of diabetes incidence following transfer of DC as in (A-D) for 10–20 mice per group. (F) Quantification of the degree of CD8⁺ and CD4⁺ cell infiltration in pancreatic histology 6 days after transfer of unstimulated or CpG-stimulated peptide-pulsed DCs. All results representative of at least 3 independent experiments.