PMID- 20861805 OWN - NLM STAT- MEDLINE DCOM- 20110107 LR - 20231213 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 90 IP - 11 DP - 2010 Dec 15 TI - Immunosuppression involving soluble CD83 induces tolerogenic dendritic cells that prevent cardiac allograft rejection. PG - 1145-56 LID - 10.1097/TP.0b013e3181f95718 [doi] AB - BACKGROUND: Dendritic cells (DCs) are crucial regulators of immunity and important in inducing and maintaining tolerance. Here, we investigated the potential of a novel DC-immunomodulating agent, soluble CD83 (sCD83), in inducing transplant tolerance. METHODS: We used the C3H-to-C57BL/6 mouse cardiac transplantation model that exhibits a combination of severe cell-mediated rejection and moderate antibody-mediated rejection and investigated whether sCD83 could augment a combination therapy consisting of Rapamycin (Rapa) and anti-CD45RB monoclonal antibody (alpha-CD45) to prolong allograft survival. RESULTS: Monotherapies consisting of Rapa and alpha-CD45 were incapable of preventing rejection. However, all treatments involving sCD83 were capable of (1) down-modulating expression of various DC surface molecules, such as major histocompatibility complex class II and costimulatory molecules, (2) reducing the allogeneic stimulatory capacity of the DCs, and (3) significantly inhibiting antidonor antibody responses. Most striking results were observed in the triple therapy-treated group, sCD83Rapaalpha-CD45, where cell-mediated rejection and antibody-mediated rejection were abrogated for over 100 days. Donor-specific tolerance was achieved in long-term surviving recipients, because donor skin transplants were readily accepted for an additional 100 days, whereas third-party skin grafts were rejected. Success of triple therapy treatment was accompanied by enhancement of tolerogenic-DCs that conferred antigen-specific protection on adoptive transfer to recipients of an allogeneic heart graft. CONCLUSIONS: Our study revealed that sCD83 is capable of attenuating DC maturation and function, and inducing donor-specific allograft tolerance, in the absence of toxicity. Thus, sCD83 seems to be a safe and valuable counterpart to current DC-modulating agents. FAU - Ge, Wei AU - Ge W AD - Department of Surgery, University of Western Ontario, London, ON, Canada. FAU - Arp, Jacqueline AU - Arp J FAU - Lian, Dameng AU - Lian D FAU - Liu, Weihua AU - Liu W FAU - Baroja, Miren L AU - Baroja ML FAU - Jiang, Jifu AU - Jiang J FAU - Ramcharran, Siobhan AU - Ramcharran S FAU - Eldeen, Firas Zahr AU - Eldeen FZ FAU - Zinser, Elisabeth AU - Zinser E FAU - Steinkasserer, Alexander AU - Steinkasserer A FAU - Chou, Perry AU - Chou P FAU - Brand, Stephen AU - Brand S FAU - Nicolette, Charles AU - Nicolette C FAU - Garcia, Bertha AU - Garcia B FAU - Wang, Hao AU - Wang H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antigens, CD) RN - 0 (CD11c Antigen) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (Immunoglobulins) RN - 0 (Immunosuppressive Agents) RN - 0 (Membrane Glycoproteins) RN - 0 (Recombinant Proteins) RN - EC 3.1.3.48 (Leukocyte Common Antigens) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Adoptive Transfer MH - Animals MH - Antibodies, Monoclonal/pharmacology MH - Antigens, CD/genetics/*pharmacology MH - CD11c Antigen/immunology MH - Dendritic Cells/*drug effects/immunology/transplantation MH - Drug Therapy, Combination MH - Graft Rejection/immunology/*prevention & control MH - Heart Transplantation/*immunology MH - Histocompatibility Antigens Class II/immunology MH - Humans MH - Immunity, Cellular/drug effects MH - Immunity, Humoral/drug effects MH - Immunoglobulins/genetics/*pharmacology MH - Immunophenotyping MH - Immunosuppressive Agents/*pharmacology MH - Leukocyte Common Antigens/immunology MH - Male MH - Membrane Glycoproteins/genetics/*pharmacology MH - Mice MH - Mice, Inbred BALB C MH - Mice, Inbred C3H MH - Mice, Inbred C57BL MH - Protein Structure, Tertiary MH - Recombinant Proteins/pharmacology MH - Sirolimus/pharmacology MH - Skin Transplantation MH - Time Factors MH - Transplantation Tolerance/*drug effects MH - Transplantation, Homologous MH - CD83 Antigen EDAT- 2010/09/24 06:00 MHDA- 2011/01/08 06:00 CRDT- 2010/09/24 06:00 PHST- 2010/09/24 06:00 [entrez] PHST- 2010/09/24 06:00 [pubmed] PHST- 2011/01/08 06:00 [medline] AID - 10.1097/TP.0b013e3181f95718 [doi] PST - ppublish SO - Transplantation. 2010 Dec 15;90(11):1145-56. doi: 10.1097/TP.0b013e3181f95718.