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Transplantation

Molecular phenotyping of T-cell-mediated rejection

A new study has reported a molecular signature of T-cell-mediated rejection in human kidney transplant biopsy samples that is enriched for effector T cells, interferon-γ and macrophages. Inhibitors of T-cell activation, such as CTLA4 and PDL1, were also prominent, raising the possibility that these immunological constrains could be harnessed by therapies for treating rejection.

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Figure 1: TCMR gene expression analysis suggests a model of TCMR in which effector CD4+ T cells engage in cognate interactions with DCs and possibly B cells, facilitating their differentiation into TH1 cells, which secrete IFN-γ to promote DC maturation, macrophage recruitment and CD8+ T-effector-cell differentiation.

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Acknowledgements

The work of A.S.C. is supported in part by grants from NIAID and NIH (R01AI110513 and P01AI097113).

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Correspondence to Anita S. Chong.

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Chong, A., Perkins, D. Molecular phenotyping of T-cell-mediated rejection. Nat Rev Nephrol 10, 678–680 (2014). https://doi.org/10.1038/nrneph.2014.197

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