Figure 3. Inhibition of B7-CD28 interaction can prevent OSGE-mediated restoration of Glut-1, pAKT, CD69, and ICOS in adoptively transferred CD4 T cells from old mice.
B10.BR host mice were untreated or treated with CTLA4Ig prior the adoptive transfer of CD4 T cells from young and old AND mice treated with OSGE or vehicle. Glut-1, pAKT(308), CD69, and ICOS were analyzed 18 hours later by flow cytometry as described in Figure 2. Each bar represents the mean percentage (± SEM) of CD4 T cells from 3 independent experiments, with a total of 3 young and 3 old AND donor mice. The asterisk (*) indicates statistically significant declines in the CD4 response from old mice, while the (^) represents statistically significant inhibition of the OSGE-mediated restoration of these processes by CTLA4Ig treatment of CD4 T cells from old mice.