Monkeypox (Mpox) virus isolation and ultrastructural characterisation from a Brazilian human sample case

巴西人类样本病例中的猴痘 (Mpox) 病毒分离和超微结构表征

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作者:Milene Dias Miranda, Gabriela Cardoso Caldas, Vivian Neuza Ferreira, Ortrud Monika Barth, Aline de Paula Dias da Silva, Mayara Secco Torres Silva, Beatriz Grinsztejn, Valdiléa Gonçalves Veloso, Thiago Moreno Souza, Edson Elias da Silva, Debora Ferreira Barreto-Vieira

Background

According to the last 2023 Monkeypox (Mpox) Outbreak Global Map from the Centres for Disease Control and Prevention (CDC), more than 100 countries with no Mpox infection report cases. Brazil stands out in this group and is the second country with the highest number of cases in the last outbreak.

Conclusions

Understanding the impact of viral growth on cellular structures and its replication kinetics may offer better strategies for the development of new drugs with antiviral properties.

Methods

We describe a virus isolation protocol for a human clinical sample from a patient from Brazil, the viral growth in a cell model through plaque forming units (PFU) assay, reverse transcriptase polymerase chain reaction (RT-PCR) and transmission electron microscopy (TEM). Findings: We follow the viral isolation in Vero cell culture from a Mpox positive clinically diagnosed sample and show the infection effects on cellular structures using a TEM. Main conclusions: Understanding the impact of viral growth on cellular structures and its replication kinetics may offer better strategies for the development of new drugs with antiviral properties.

Objective

To contribute to knowledge of the virus infection effects in a cellular model, which is important for diagnosis infections not yet included in a provider´s differential diagnosis and for developing viral inhibition strategies.

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