SynthesisJournal of molecular neuroscience : MN2025
Meta-analysis of RNA-seq Data Identifies Involvement of Interferon-Induced Genes to Facilitate Blood-Brain Barrier Traversal of Neuroinvasive Pathogens.
Synthesis in Journal of molecular neuroscience : MN, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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4 authors.
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Abstract
backgroundNeuroinvasive pathogens are capable of breaching the blood-brain barrier (BBB), and causing central nervous system infections. Although the response of human brain microvascular endothelial cells (hBMECs), the forefront cells of BBB has been extensively studied, the roles of astrocytes and pericytes in modulating BBB integrity during infection remain less defined.
aimsThe study aims for a meta-analysis of RNA-seq data to compare the transcriptional response of hBMECs alone and in co-culture with astrocytes and pericytes (BBB-spheroids) following infection with Neisseria meningitidis and Borrelia bavariensis. Subsequently, identifying the pathogen-specific gene signatures that regulates the signalling pathways associated with infection and BBB disruption.
methodsUnique and shared differentially expressed genes (DEGs) of hBMECs and BBB-spheroids were identified and analysed for functional enrichment using DAVID. Protein-protein interaction networks were constructed and analysed in Cytoscape using MCODE and cytoHubba to identify infection-related hub genes.
resultsA large proportion of DEGs were unique to each BBB model during infection, 49% in Neisseria and 66% in Borrelia infection, whereas only 4.9% were shared. hBMECs predominantly expressed defence-related genes, whereas BBB-spheroids expressed genes linked to barrier function. Notably, IFIH1, IFIT1, IFIT3, ISG15, MX1, OAS1, and RSAD2 were identified as regulators of the BBB's transcriptomic response to infection.
conclusionsThe meta-analysis highlights distinct yet complementary roles of endothelial cells and the supporting pericytes and astrocytes in BBB regulation to bacterial invasion. The identified hub genes may serve as key regulators of infection-driven inflammation and form potential diagnostic or prognostic targets.
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