Abstract
Fluorescence in situ hybridization (FISH) has been widely used to analyze genome loci at a single cell level in order to determine within a cell population potential discrepancies in their regulation according to the nuclear positioning. Latent herpes simplex virus 1 (HSV-1) genome remains as an episome in the nucleus of the infected neurons. Accordingly, depending on the location of the viral genomes in the nucleus, they could be targeted by different types of epigenetic regulations important for the establishment and stability of latency, and ultimately for the capacity of HSV-1 to reactivate. Therefore, it is important to take into consideration the interaction of the viral genomes with the nuclear environment to integrate this aspect in the overall set of physiological, immunological, and molecular data that have been produced, and which constitute the main knowledge regarding the biology of HSV-1. In this method chapter we describe in detail the procedure to perform FISH for the detection of HSV-1 genomes particularly during latency and also the combination of this approach with the detection of cellular and/or viral proteins.
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