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Blood, 15 September 2007, Vol. 110, No. 6, pp. 1857-1863.
Prepublished online as a Blood First Edition Paper on May 22, 2007; DOI 10.1182/blood-2007-03-078881.
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HEMOSTASIS, THROMBOSIS, AND VASCULAR BIOLOGY
High T-cell response to human cytomegalovirus induces chemokine-mediated endothelial cell damage
Cynthia A. Bolovan-Fritts1,
Rodney N. Trout1, and
Stephen A. Spector1,3
1 Department of Pediatrics, Division of Infectious Diseases,
2 Center for Molecular Genetics, and
3 Center for AIDS Research, University of California San Diego, La Jolla
Human cytomegalovirus (CMV) infection has been linked to inflammatory diseases that involve vascular endothelial damage, including vascular disease and chronic transplant rejection. We previously reported that the host CD4+ T-cell response to CMV antigen presented by endothelial cells can produce interferon- and tumor necrosis factor- at levels sufficient to drive induction of fractalkine, a key marker of inflammation, in endothelial cells. In this work, we report that donors with high frequencies of antigen-specific T cells to CMV (high responders) induce higher levels of activation-associated chemokines such as fractalkine, RANTES (regulated on activation, normal T cell expressed and secreted), and macrophage inflammatory protein-1ß, together with cell-adhesion markers in endothelial cells compared with donors with low levels of CMV-specific T cells (low responders). High-responder cultures had higher levels of leukocyte recruitment and adherence to the endothelial monolayers associated with progressive damage and loss of the endothelial cells. These processes that led to endothelial destruction only required viral antigen and did not require infectious virus. Our findings further support that CMV may represent one member of a class of persistent pathogens in which a high antigen-specific T-cell response defines an important risk factor for development of chronic inflammation and endothelial cell injury.

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C. A. Bolovan-Fritts and S. A. Spector
Endothelial damage from cytomegalovirus-specific host immune response can be prevented by targeted disruption of fractalkine-CX3CR1 interaction
Blood,
January 1, 2008;
111(1):
175 - 182.
[Abstract]
[Full Text]
[PDF]
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