Granulocyte-colony Stimulating Factor Reactivates Human Cytomegalovirus in a Latently Infected Humanized Mouse Model

Cell Host Microbe. 2010 Sep 16;8(3):284-91. doi: 10.1016/j.chom.2010.08.001.

Abstract

Human cytomegalovirus (HCMV) is a significant cause of morbidity and mortality in organ transplant recipients. The use of granulocyte-colony stimulating factor (G-CSF)-mobilized stem cells from HCMV seropositive donors is suggested to double the risk of late-onset HCMV disease and chronic graft-versus-host disease in recipients when compared to conventional bone marrow transplantation with HCMV seropositive donors, although the etiology of the increased risk is unknown. To understand mechanisms of HCMV transmission in patients receiving G-CSF-mobilized blood products, we generated a NOD-scid IL2Rγ(c)(null)-humanized mouse model in which HCMV establishes latent infection in human hematopoietic cells. In this model, G-CSF induces the reactivation of latent HCMV in monocytes/macrophages that have migrated into organ tissues. In addition to establishing a humanized mouse model for systemic and latent HCMV infection, these results suggest that the use of G-CSF mobilized blood products from seropositive donors pose an elevated risk for HCMV transmission to recipients.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antigens, CD34 / analysis
  • Bone Marrow Cells / immunology
  • Bone Marrow Cells / virology
  • Cytokines / blood
  • Cytomegalovirus / genetics
  • Cytomegalovirus / immunology
  • Cytomegalovirus / isolation & purification
  • Cytomegalovirus / physiology*
  • Cytomegalovirus Infections / virology*
  • Disease Models, Animal
  • Flow Cytometry
  • Granulocyte Colony-Stimulating Factor / pharmacology*
  • Hematopoietic Stem Cell Mobilization*
  • Hematopoietic Stem Cell Transplantation
  • Hematopoietic Stem Cells / immunology
  • Hematopoietic Stem Cells / virology
  • Humans
  • Macrophages / virology*
  • Mice
  • Mice, SCID
  • Monocytes / virology
  • Virus Activation*
  • Virus Latency*

Substances

  • Antigens, CD34
  • Cytokines
  • Granulocyte Colony-Stimulating Factor