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ADAM15 Participates in Tick-Borne Encephalitis Virus Replication.


ABSTRACT: Tick-borne encephalitis virus (TBEV), a major tick-borne viral pathogen of humans, is known to cause neurological diseases such as meningitis, encephalitis, and meningoencephalitis. However, the life cycle and pathogenesis of TBEV are not well understood. Here, we show that the knockdown or knockout of ADAM15 (a disintegrin and metalloproteinase 15), a host protein involved in neuroblastoma diseases, leads to TBEV replication and assembly defects. We characterized the disintegrin domain in ADAM15 and found that the ADAM15 subcellular localization was changed following TBEV infection. RNA interference (RNAi) screen analysis confirmed ADAM's nonredundant functions and identified a specific role for ADAM15 in TBEV infection. An RNA-sequencing analysis was also conducted to understand the causal link between TBEV infection and the cellular endomembrane network, namely, the generation of replication organelles promoting viral genome replication and virus production. Our data demonstrated that TBEV infection changes ADAM15 cellular localization, which contributes to membrane reorganization and viral replication.IMPORTANCE Tick populations are increasing, and their geographic ranges are expanding. Increases in tick-borne disease prevalence and transmission are important public health issues. Tick-borne encephalitis virus (TBEV) often results in meningitis, encephalitis, and meningoencephalitis. TBEV causes clinical disease in more than 20,000 humans in Europe and Asia per year. An increased incidence of TBE has been noted in Europe and Asia, as a consequence of climate and socioeconomic changes. The need to investigate the mechanism(s) of interaction between the virus and the host factors is apparent, as it will help us to understand the roles of host factors in the life cycle of TBEV. The significance of our research is in identifying the ADAM15 for TBEV replication, which will greatly enhance our understanding of TBEV life cycle and highlight a target for pharmaceutical consideration.

PROVIDER: S-EPMC7851565 | BioStudies |

REPOSITORIES: biostudies

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