Journal
JOURNAL OF VIROLOGY
Volume 78, Issue 9, Pages 4444-4453Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JVI.78.9.4444-4453.2004
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Funding
- NCRR NIH HHS [P20 RR018724, 1-P20-RR018724-01] Funding Source: Medline
- NIAID NIH HHS [R01 AI056077] Funding Source: Medline
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Human cytomegalovirus (HCMV) pathogenesis is characterized by multiple organ system involvement due to viral spread to host organs after a cell-associated viremia. The cell type responsible for HCNW dissemination is unknown. Monocytes are the most likely candidate since they are the predominant cell type infected in the blood. However, monocytes are not productive for viral replication and are abortively infected. The results presented here provide a potential answer to this conundrum. We report that primary HCNW infection of monocytes induces transendothelial migration and monocyte-to-macrophage differentiation and that these HCNW-differentiated macrophages are productive for viral replication. Together, our data suggest a novel mechanism for HCMV pathogenesis; HCNW induces cellular changes in monocytes to promote viral replication and spread to host organs.
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