Early immune mechanisms of neonatal porcine islet xenograft rejection.

Targeting these cells, which appear early in the rejection process, may provide an opportunity to abort the rejection process prior to activation of T cells. One strategy could be the blockade of chemotactic signals associated with preferential recruitment of immune cells into the graft site. Collectively, our studies demonstrated that early recruitment of immune cells into graft site is controlled by chemotactic activities and suggest a potential target to prevent the early infiltration of immune cells within the graft. Our findings in this study will have significance in improving NPI xenograft acceptance and induce long-term xenograft survival.