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Schmitz, Robin; Fitch, Zachary W.; Schroder, Paul M.; Choi, Ashley Y.; Manook, Miriam; Yoon, Janghoon; Song, Mingqing; Yi, John S.; Khandelwal, Sanjay; Arepally, Gowthami M.; Farris, Alton B.; Reis, Edimara S.; Lambris, John D.; Kwun, Jean; Knechtle, Stuart J.
Nature communications, 09/2021, Letnik: 12, Številka: 1Journal Article
Abstract Sensitized kidney transplant recipients experience high rates of antibody-mediated rejection due to the presence of donor-specific antibodies and immunologic memory. Here we show that transient peri-transplant treatment with the central complement component C3 inhibitor Cp40 significantly prolongs median allograft survival in a sensitized nonhuman primate model. Despite donor-specific antibody levels remaining high, fifty percent of Cp40-treated primates maintain normal kidney function beyond the last day of treatment. Interestingly, presence of antibodies of the IgM class associates with reduced median graft survival (8 vs. 40 days; p = 0.02). Cp40 does not alter lymphocyte depletion by rhesus-specific anti-thymocyte globulin, but inhibits lymphocyte activation and proliferation, resulting in reduced antibody-mediated injury and complement deposition. In summary, Cp40 prevents acute antibody-mediated rejection and prolongs graft survival in primates, and inhibits T and B cell activation and proliferation, suggesting an immunomodulatory effect beyond its direct impact on antibody-mediated injury.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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