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Open AccessJournal ArticleDOI

The broad-spectrum antiviral functions of IFIT and IFITM proteins

TLDR
This Review focuses on recent advances in identifying the unique mechanisms of action of IFIT and IFITM proteins, which explain their broad-spectrum activity against the replication, spread and pathogenesis of a range of human viruses.
Abstract
Over the past few years, several groups have identified new genes that are transcriptionally induced downstream of type I interferon (IFN) signalling and that inhibit infection by individual or multiple families of viruses. Among these IFN-stimulated genes with antiviral activity are two genetically and functionally distinct families--the IFN-induced protein with tetratricopeptide repeats (IFIT) family and the IFN-induced transmembrane protein (IFITM) family. This Review focuses on recent advances in identifying the unique mechanisms of action of IFIT and IFITM proteins, which explain their broad-spectrum activity against the replication, spread and pathogenesis of a range of human viruses.

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Journal ArticleDOI

Interferon-Stimulated Genes: A Complex Web of Host Defenses

TL;DR: This review begins by introducing interferon (IFN) and the JAK-STAT signaling pathway to highlight features that impact ISG production and describes ways in which ISGs both enhance innate pathogen-sensing capabilities and negatively regulate signaling through the Jak-STAT pathway.
Journal ArticleDOI

Exosomes mediate the cell-to-cell transmission of IFN-α-induced antiviral activity

TL;DR: An antiviral mechanism of IFN-α activity that involves the induction and intercellular transfer of antiviral molecules via exosomes is proposed and contributed to the antiviral response of IFn-α to mouse hepatitis virus A59 and adenovirus in mice.
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Nitazoxanide: a first-in-class broad-spectrum antiviral agent.

TL;DR: A Phase 2b/3 clinical trial recently published in The Lancet Infectious Diseases found that oral administration of nitazoxanide 600mg twice daily for five days reduced the duration of clinical symptoms and reduced viral shedding compared to placebo in persons with laboratory-confirmed influenza.
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The continued threat of emerging flaviviruses

TL;DR: The basic biology of these viruses, their life cycles, the diseases they cause and available therapeutic options are reviewed, and the global distribution of flaviviruses is discussed, with a focus on lesser-known species that have the potential to emerge more broadly in human populations.
References
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Journal ArticleDOI

A diverse range of gene products are effectors of the type I interferon antiviral response

TL;DR: It is shown that different viruses are targeted by unique sets of ISGs, and that each viral species is susceptible to multiple antiviral genes, which together encompass a range of inhibitory activities.
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Innate immune recognition of viral infection.

TL;DR: Members of the Toll-like receptor family have emerged as key sensors that recognize viral components such as nucleic acids and induce type I interferon responses via distinct signaling pathways.
Journal ArticleDOI

Identification of genes differentially regulated by interferon α, β, or γ using oligonucleotide arrays

TL;DR: The results demonstrate the usefulness of oligonucleotide arrays in monitoring mammalian gene expression on a broad and unprecedented scale and provide insights into the basic mechanisms of IFN actions.
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Interferons, interferon‐like cytokines, and their receptors

TL;DR: This review summarizes the history of the purification of human IFNs and the key aspects of the current state of knowledge of humanIFN genes, proteins, and receptors and provides some new insights into the development of these proteins as major elements of innate immunity.
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