ArticleThe Journal of infectious diseases2026
A Patient-Derived iPSC-Based Model Reveals Neural Lineage-Specific Transcription of Endogenous HHV-6B.
Article in The Journal of infectious diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundEndogenous human herpesvirus 6 (eHHV-6), in which the entire viral genome is integrated into human chromosomes, is present in approximately 1% of the population and has been associated with various clinical conditions, including neurological disorders. However, its biological significance remains unclear due to the lack of appropriate experimental models.
methodsWe established a patient-derived induced pluripotent stem cell (iPSC)-based tissue culture model using lymphoblastoid cell lines from individuals with eHHV-6B. iPSCs retaining the integrated viral genome were generated and subsequently differentiated into neural stem cells (NSCs). Viral gene expression was evaluated by RT-qPCR under basal conditions and following chemical stimulation.
resultsThe integrated HHV-6B genome was transcriptionally silent in iPSCs but exhibited spontaneous low-level expression of the immediate-early gene U90 and the late gene U100 in NSCs. Chemical stimulation further enhanced U90 expression, whereas induction of U100 did not reach statistical significance. These findings indicate preferential activation of early viral transcriptional programs in neural lineage cells.
conclusionsNeural lineage cells provide a permissive environment for expression of eHHV-6B transcripts. This patient-derived iPSC-based model provides a platform for investigating the biological significance of neural lineage-specific eHHV-6 transcripts and may facilitate interpretation of HHV-6 DNA detection in patients with eHHV-6 by enabling studies of cell type-dependent viral transcription.
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