RT Journal Article T1 Delayed administration of ixazomib modifies the immune response and prevents chronic graft-versus-host disease A1 Ramos, Teresa Lopes A1 García-Guerrero, Estefanía A1 Caballero-Velázquez, Teresa A1 Rodríguez-Gil, Alfonso A1 Caracuel-García, Rocío A1 Nufer, Melanie A1 Robles-Frías, María José A1 Barbado, María Victoria A1 Pérez-Simón, José A. K1 Bone marrow K1 Leukemia K1 Proteasome inhibitor K1 Ixazomib K1 Graft-versus-host disease K1 B cells K1 Médula ósea K1 Leucemia K1 Inhibidores de proteasoma K1 Enfermedad injerto contra huésped K1 Linfocitos B AB In this study, we aimed to modify the immune response in the long term after allogeneic bone marrow transplantation (allo-BMT) by using the proteasome inhibitor ixazomib (IXZ) at the late stages of the post-transplant period. This approach facilitated the immune reconstitution after transplantation. IXZ significantly prolonged survival and decreased the risk of chronic graft-versus-host disease (cGvHD) in two different murine models without hampering the graft-versus-leukemia (GvL) effect, as confirmed by bioluminescence assays. Remarkably, the use of IXZ was related to an increase of regulatory T cells both in peripheral blood and in the GvHD target organs and a decrease of effector donor T cells. Regarding B cells, IXZ treated mice had faster recovery of B cells in PB and of pre-pro-B cells in the bone marrow. Mice receiving ixazomib had a lower number of neutrophils in the GvHD target organs as compared to the vehicle group. In summary, delayed administration of IXZ ameliorated cGvHD while preserving GvL and promoted a pro-tolerogenic immune response after allo-BMT. PB Nature Publishing Group SN 0268-3369 YR 2021 FD 2021-09-23 LK http://hdl.handle.net/10668/4301 UL http://hdl.handle.net/10668/4301 LA en NO Ramos TL, García-Guerrero E, Caballero-Velázquez T, Rodríguez-Gil A, Caracuel-García R, Nufer M, et al. Delayed administration of ixazomib modifies the immune response and prevents chronic graft-versus-host disease. Bone Marrow Transplant. 2021 Dec;56(12):3049-3058 DS RISalud RD Apr 6, 2025