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Review
. 2016 Aug;16(8):2254-69.
doi: 10.1111/ajt.13791. Epub 2016 Apr 21.

The Cell Biology of Cytomegalovirus: Implications for Transplantation

H Kaminski  1 , J A Fishman  2
Affiliations
Free article
Review

The Cell Biology of Cytomegalovirus: Implications for Transplantation

H Kaminski et al. Am J Transplant. 2016 Aug.
Free article

Abstract

Interpretation of clinical data regarding the impact of cytomegalovirus (CMV) infection on allograft function is complicated by the diversity of viral strains and substantial variability of cellular receptors and viral gene expression in different tissues. Variation also exists in nonspecific (monocytes and dendritic cells) and specific (NK cells, antibodies) responses that augment T cell antiviral activities. Innate immune signaling pathways and expanded pools of memory NK cells and γδ T cells also serve to amplify host responses to infection. The clinical impact of specific memory T cell anti-CMV responses that cross-react with graft antigens and alloantigens is uncertain but appears to contribute to graft injury and to the abrogation of allograft tolerance. These responses are modified by diverse immunosuppressive regimens and by underlying host immune deficits. The impact of CMV infection on the transplant recipient reflects cellular changes and corresponding host responses, the convergence of which has been termed the "indirect effects" of CMV infection. Future studies will clarify interactions between CMV infection and allograft injury and will guide interventions that may enhance clinical outcomes in transplantation.

Keywords: T cell biology; basic (laboratory) research/science; graft survival; immunobiology; infection and infectious agents; infectious disease; innate immunity; organ transplantation in general; translational research/science; viral: Cytomegalovirus (CMV).

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