Figure 8.
Model of the role of TIM4+ B-cells in the alloimmune response in islet transplantation. TIM4 B-cells in normal conditions inhibits the Th2 immune response (A). TIM4 targeting with RMT4-53 enhances the Th2 response (B). In the absence of a Th1 response (as in Tbet−/− mice), TIM4 still exerts a Th2 inhibitory effect (C), and TIM4 targeting with RMT4-53 enhances the Th2 response (D). In the absence of B-cells, an increased Th2 response is evident due to the lack of TIM4 inhibition (E), and TIM4 targeting with RMT4-53 does not further increase Th2 response (F).