Drug discovery technologies and strategies for Machupo virus and other New World arenaviruses [PDF]
Seven arenaviruses cause viral hemorrhagic fever in humans: the Old World arenaviruses Lassa and Lujo, and the New World Clade B arenaviruses Machupo (MACV), Junín (JUNV), Guanarito (GTOV), Sabiá (SABV), and Chapare (CHPV). All of these viruses are Risk Group 4 biosafety pathogens. MACV causes human disease outbreak with high case-fatality rates.
Sheli R, Radoshitzky +4 more
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MOLECULAR-BIOLOGICAL PECULIARITIES OF ARENAVIRUS REPRODUCTION IN SENSITIVE CELLS
The Arenaviridae family consists of a large group of single strand ambisense RNA viruses that are separated phylogenetically, serologically and geographically into Old World and New World viruses.
T. E. Sizikova +4 more
doaj +1 more source
Signal-regulatory protein alpha (SIRPA) is a well-known inhibitor of phagocytosis when it complexes with CD47 expressed on target cells. Here we show that SIRPA decreased in vitro infection by a number of pathogenic viruses, including New World and Old ...
Nicolás Sarute +6 more
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The Current State of Vaccine Development for Specific Prophylactics of Arenaviral Hemorrhagic Fevers
Presently, the Arenavirus genus (Arenaviridae family) includes 26 individual species of viruses. It is divided into two main groups – Old World arenaviruses and New World arenaviruses.
T. E. Sizikova +3 more
doaj +1 more source
Chapare virus, a newly discovered arenavirus isolated from a fatal hemorrhagic fever case in Bolivia. [PDF]
A small focus of hemorrhagic fever (HF) cases occurred near Cochabamba, Bolivia, in December 2003 and January 2004. Specimens were available from only one fatal case, which had a clinical course that included fever, headache, arthralgia, myalgia, and ...
Simon Delgado +11 more
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DDX3 suppresses type I interferons and favors viral replication during Arenavirus infection.
Several arenaviruses cause hemorrhagic fever (HF) diseases that are associated with high morbidity and mortality in humans. Accordingly, HF arenaviruses have been listed as top-priority emerging diseases for which countermeasures are urgently needed ...
María Eugenia Loureiro +15 more
doaj +1 more source
Sabiá Virus–Like Mammarenavirus in Patient with Fatal Hemorrhagic Fever, Brazil, 2020
New World arenaviruses can cause chronic infection in rodents and hemorrhagic fever in humans. We identified a Sabiá virus–like mammarenavirus in a patient with fatal hemorrhagic fever from São Paulo, Brazil.
Fernanda de Mello Malta +13 more
doaj +1 more source
Single Nucleoprotein Residue Modulates Arenavirus Replication Complex Formation
The Arenaviridae are enveloped, negative-sense RNA viruses with several family members that cause hemorrhagic fevers. This work provides immunofluorescence evidence that, unlike those of New World arenaviruses, the replication and transcription complexes
Kristeene A. Knopp +3 more
doaj +1 more source
Arenavirus Variations Due to Host-Specific Adaptation
Arenavirus particles are enveloped and contain two single-strand RNA genomic segments with ambisense coding. Genetic plasticity of the arenaviruses comes from transcription errors, segment reassortment, and permissive genomic packaging, and results in ...
Juan C. Zapata, Maria S. Salvato
doaj +1 more source
Rational design of universal immunotherapy for TfR1-tropic arenaviruses
New World arenaviruses utilize the cellular transferrin receptor 1 (TfR1) to enter host cells. Here, the authors develop a TfR1-mimetic immunoadhesin, Arenacept, that targets viral spike complexes and exerts effective pan-reactive neutralization against ...
Hadas Cohen-Dvashi +9 more
doaj +1 more source

