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<p>All human herpesviruses establish latency following the resolution of the primary infection. Among these, α-herpesviruses HSV-1, HSV-2 and VZV establish latency in neurons, whereas neurons are not traditionally considered a site of latency for other herpesviruses. Using a combination of in vivo murine models and ex vivo human fetal tissues, we discovered that cytomegalovirus (CMV), a ubiquitous β-herpesvirus, can persist in neurons and that CD4<sup>+</sup> T-cell-derived interferon-gamma is critical in restricting active viral replication in this cell type. Furthermore, we show that mouse CMV can establish latency in neurons and that CD4<sup>+</sup> T-cells are essential in preventing viral reactivation. Our findings may have translational significance because human cytomegalovirus (HCMV) is the leading cause of congenital viral infections resulting in neurodevelopmental and neuroinflammatory lesions with long-term functional sequelae.</p>

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Neuron-restricted cytomegalovirus latency in the central nervous system regulated by CD4+ T-cells and IFN-γ

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月29日

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  • Fran Krstanović,
  • Andrea Mihalić,
  • Ahmad Seyar Rashidi,
  • Katarzyna M. Sitnik,
  • Zsolt Ruzsics,
  • Luka Čičin-Šain,
  • Georges M. G. M. Verjans,
  • Stipan Jonjić,
  • Ilija Brizić

摘要

All human herpesviruses establish latency following the resolution of the primary infection. Among these, α-herpesviruses HSV-1, HSV-2 and VZV establish latency in neurons, whereas neurons are not traditionally considered a site of latency for other herpesviruses. Using a combination of in vivo murine models and ex vivo human fetal tissues, we discovered that cytomegalovirus (CMV), a ubiquitous β-herpesvirus, can persist in neurons and that CD4+ T-cell-derived interferon-gamma is critical in restricting active viral replication in this cell type. Furthermore, we show that mouse CMV can establish latency in neurons and that CD4+ T-cells are essential in preventing viral reactivation. Our findings may have translational significance because human cytomegalovirus (HCMV) is the leading cause of congenital viral infections resulting in neurodevelopmental and neuroinflammatory lesions with long-term functional sequelae.