ArticleMethods in molecular biology (Clifton, N.J.)2025
Efficient Expression of Oropouche Virus Nonstructural Proteins NSs and NSm.
Article in Methods in molecular biology (Clifton, N.J.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Emerging threat of Oropouche virus: Clinical features, experimental models, and virulence.Virulence · 2026Review
- Oropouche virus NSs protein suppresses host transcription by targeting the RNA polymerase II RPB1 protein.Journal of virology · 2025Article
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2 authors.
Funding
Abstract
Oropouche fever, a mosquito- or midge-borne emerging zoonotic disease endemic to South and Central America, manifests as a dengue-like acute febrile illness with occasional occurrences of meningitis or meningoencephalitis. The causative agent, Oropouche virus (OROV), belongs to the genus Orthobunyavirus within the family Peribunyaviridae. Its tripartite negative-sense RNA genome comprises small (S), medium (M), and large (L) segments, encoding structural N, Gn/Gc, and L proteins, respectively. Additionally, the S- and M-segments encode nonstructural proteins: NSs and NSm, which may act as virulence factors. OROV NSs functions as an interferon antagonist with an unknown mechanism, while the roles of OROV NSm remain elusive. This chapter introduces efficient expression systems for OROV NSm and NSs proteins. Validating the presence of a signal peptide at the N-terminus of NSm protein is essential for its expression. Furthermore, expressing OROV NSs protein independently of an RNA polymerase II promoter is crucial to prevent restricted gene expression, potentially caused by NSs inhibiting cellular RNA polymerase II, as observed in closely related bunyavirus NSs proteins. These protein expression strategies offer insights into the molecular characterization of OROV NSm and NSs proteins, facilitating a deeper understanding of their virulence mechanisms.
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