Caspase-3-dependent reactivation of latent herpes simplex virus type 1 in sensory neuronal cultures

Abstract

Life-long latent herpes simplex virus type 1 (HSV-1) is harbored in sensory neurons where sporadic reactivation occurs. Reactivation stimuli may involve activation of apoptotic signaling in the neuron. Previous experiments have demonstrated that reactivation of latent HSV-1 in dorsal root ganglion (DRG) neuronal cultures occurred following nerve growth factor (NGF) deprivation. NGF deprivation stimulates apoptotic signaling by activating the proapoptotic proteolytic enzyme, caspase-3. When DRG neuronal cultures harboring latent HSV-1 were treated with a caspase-3-specific inhibitor, NGF deprivation—induced reactivation was significantly reduced. Interestingly, the caspase-3 inhibitor had no effect on productive HSV-1 infection. Furthermore, activation of caspase-3 with either C2-ceramide or a recombinant adenovirus expressing caspase-3 caused significant HSV-1 reactivation.

DOI: 10.1080/13550280390201678

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Cite this paper

@article{Hunsperger2003Caspase3dependentRO, title={Caspase-3-dependent reactivation of latent herpes simplex virus type 1 in sensory neuronal cultures}, author={Elizabeth A. Hunsperger and Christine L. Wilcox}, journal={Journal of NeuroVirology}, year={2003}, volume={9}, pages={390-398} }