Beschreibung:
Parthenogenetic stem cells may provide an attractive new source in regenerative medicine. As their major histocompability complex (MHC) ist haploidentical, PSC-banks may offer ready access to MHC-matched allogeneic stem cells. In this doctoral thesis their immunological properties were examined. PSC were largely resistant to CTLs derived from T-cell-receptor transgenic OT-I mice. However, it was shown that as undifferentiated PSC lack MHC-class-I-molecules and present various activating ligands on their surface, they are readily recognized and killed by NK-cell mediated effector mechanisms....