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Organotypic hippocampal culture model reveals differential responses to highly similar Zika virus isolates

Oliveira, Marina da Silva ; Cassiano, Larissa Marcely Gomes ; Pioline, Jeanne ; de Carvalho, Ketyllen Reis Andrade ; Salim, Anna Christina de Matos ; Alves, Pedro Augusto ; Fernandes, Gabriel da Rocha ; Machado, Alexandre de Magalhães Vieira ; Coimbra, Roney Santos

Journal of neuroinflammation, 2023-06, Vol.20 (1), p.140-140, Article 140 [Periódico revisado por pares]

England: BioMed Central Ltd

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Organotypic hippocampal culture model reveals differential responses to highly similar Zika virus isolates
Autor: Oliveira, Marina da Silva ; Cassiano, Larissa Marcely Gomes ; Pioline, Jeanne ; de Carvalho, Ketyllen Reis Andrade ; Salim, Anna Christina de Matos ; Alves, Pedro Augusto ; Fernandes, Gabriel da Rocha ; Machado, Alexandre de Magalhães Vieira ; Coimbra, Roney Santos
Assuntos: Amino acid metabolism ; Amino acids ; Analysis ; Animal models ; Animals ; Antibodies ; Astrocytes ; Asymptomatic ; Brain research ; Cell culture ; Cell cycle ; Cell death ; Cell proliferation ; Chromatin remodeling ; Cognitive ability ; Confocal microscopy ; Down-regulation ; Epigenetics ; Gene set enrichment analysis ; Genetic diversity ; Genomes ; Health aspects ; Hippocampus ; Immunofluorescence ; Infections ; Laboratories ; Long-term effects ; Microencephaly ; Microglia ; Morphology ; Nervous system ; Neurodegeneration ; Neurogenesis ; Neuroinflammation ; Neurons ; NS1 protein ; NS4A protein ; Organotypic hippocampal culture ; Phenotypes ; RNA sequencing ; Transcriptome ; Transcriptomes ; Zika virus
É parte de: Journal of neuroinflammation, 2023-06, Vol.20 (1), p.140-140, Article 140
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Zika virus (ZIKV) caused an outbreak in Brazil, in 2015, being associated to microcephaly. ZIKV has a strong neurotropism leading to death of infected cells in different brain regions, including the hippocampus, a major site for neurogenesis. The neuronal populations of the brain are affected differently by ZIKV from Asian and African ancestral lineages. However, it remains to be investigated whether subtle variations in the ZIKV genome can impact hippocampus infection dynamics and host response. This study evaluated how two Brazilian ZIKV isolates, PE243 and SPH2015, that differ in two specific missense amino acid substitutions, one in the NS1 protein and the other in the NS4A protein, affect the hippocampal phenotype and transcriptome. Organotypic hippocampal cultures (OHC) from infant Wistar rats were infected with PE243 or SPH2015 and analyzed in time series using immunofluorescence, confocal microscopy, RNA-Seq and RT-qPCR. Unique patterns of infection and changes in neuronal density in the OHC were observed for PE243 and SPH2015 between 8 and 48 h post infection (p.i.). Phenotypic analysis of microglia indicated that SPH2015 has a greater capacity for immune evasion. Transcriptome analysis of OHC at 16 h p.i. disclosed 32 and 113 differentially expressed genes (DEGs) in response to infection with PE243 and SPH2015, respectively. Functional enrichment analysis suggested that infection with SPH2015 activates mostly astrocytes rather than microglia. PE243 downregulated biological process of proliferation of brain cells and upregulated those associated with neuron death, while SPH2015 downregulated processes related to neuronal development. Both isolates downregulated cognitive and behavioral development processes. Ten genes were similarly regulated by both isolates. They are putative biomarkers of early hippocampus response to ZIKV infection. At 5, 7, and 10 days p.i., neuronal density of infected OHC remained below controls, and mature neurons of infected OHC showed an increase in the epigenetic mark H3K4me3, which is associated to a transcriptionally active state. This feature is more prominent in response to SPH2015. Subtle genetic diversity of the ZIKV affects the dynamics of viral dissemination in the hippocampus and host response in the early stages of infection, which may lead to different long-term effects in neuronal population.
Editor: England: BioMed Central Ltd
Idioma: Inglês

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Organotypic hippocampal culture model reveals differential responses to highly similar Zika virus isolates

Oliveira, Marina da Silva ; Cassiano, Larissa Marcely Gomes ; Pioline, Jeanne ; de Carvalho, Ketyllen Reis Andrade ; Salim, Anna Christina de Matos ; Alves, Pedro Augusto ; Fernandes, Gabriel da Rocha ; Machado, Alexandre de Magalhães Vieira ; Coimbra, Roney Santos

England: BioMed Central Ltd

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