Published February 10, 2023 | Version v1

Caffeic Acid Has Antiviral Activity against Ilhéus Virus In Vitro

Description

Ilhéus virus (ILHV) is a neglected mosquito-borne flavivirus. ILHV infection may lead to Ilhéus fever, an emerging febrile disease like dengue fever with the potential to evolve into a severe neurological disease characterized by meningoencephalitis; no specific treatments are available for this disease. This study assessed the antiviral properties of caffeic acid, an abundant component of plant-based food products that is also compatible with the socioeconomic limitations associated with this neglected infectious disease. The in vitro activity of caffeic acid on ILHV replication was investigated in Vero and A549 cell lines using plaque assays, quantitative RT-PCR, and immunofluorescence assays. We observed that 500 µM caffeic acid was virucidal against ILHV. Molecular docking indicated that caffeic acid might interact with an allosteric binding site on the envelope protein.

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Additional details

Identifiers

PMID
36851709
Other
PMC9961518

Funding

Fundação de Amparo à Pesquisa do Estado de São Paulo
2020/12875-5
Fundação de Amparo à Pesquisa do Estado de São Paulo
2018/15083-2
Fundação de Amparo à Pesquisa do Estado de São Paulo
2013/21719-3
National Institutes of Health
The Coordinating Research on Emerging Arboviral Threats Encompassing the Neotropics (CREATE-NEO) U01AI151807
Coordenação de Aperfeicoamento de Pessoal de Nível Superior
#88881.506794/2020–01
Universidade Estadual Paulista (Unesp)
Edital PROPe 13/2022 4320
Fundação de Amparo à Pesquisa do Estado de São Paulo
2018/02993-0
National Council for Scientific and Technological Development
141253/2019-3