Changes in the Content of Mononuclear Liver Cells Expressing Immune Proteasomes after Transplantation of Ovarian Tissues Depending on Donor-Recipient Differences in Rats.

Implantation of ovarian tissue allografts in outbred Wistar rats and inbred August rats against the background of induction of donor-specific tolerance was accompanied by an increase in liver content of mononuclear cells expressing LMP2 immune of proteasome subunit by day 37 after transplantation in comparison with day 0. Graft rejection, on the contrary, was associated with a decrease in the number of LMP2 cells in the liver of rats of both lines during this period. The difference in the content of these cells and the graft take rate were higher in Wistar rats. The number of mononuclear cells expressing LMP7 immune proteasome subunit in the liver did not change in rats of both lines by day 37 in comparison with day 0. Thus, the level of immune proteasomes with LMP2 subunit in mononuclear cells of the liver is related to fine mechanisms of regulation of immune responses and their shift toward graft take or rejection.