Antibody-mediated rejection (AMR) has emerged as an important cause of lung graft failure. In the current issue of the JCI, a study by Li et al. identifies a critical role of Foxp3+ T cells residing within lung allografts in the regulation of AMR. This study not only provides new insights into the nature of lung allografts as a primary site where T and B cell priming and immune regulation can occur, but also introduces the mouse orthotopic lung transplant as a model for studying the immunobiology of AMR. Because AMR can be so difficult to effectively treat in lung transplant recipients, the development of an animal model is a major advance in understanding the immunopathogenesis of AMR.


Elizabeth A. Lendermon, John F. McDyer


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