Uncovering oxysterol-binding protein (OSBP) as a target of the anti-enteroviral compound TTP-8307.

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ID: 58018
2017
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Abstract
The genus Enterovirus (e.g. poliovirus, coxsackievirus, rhinovirus) of the Picornaviridae family of positive-strand RNA viruses includes many important pathogens linked to a range of acute and chronic diseases for which no approved antiviral therapy is available. Targeting a step in the life cycle that is highly conserved provides an attractive strategy for developing broad-range inhibitors of enterovirus infection. A step that is currently explored as a target for the development of antivirals is the formation of replication organelles, which support replication of the viral genome. To build replication organelles, enteroviruses rewire cellular machinery and hijack lipid homeostasis pathways. For example, enteroviruses exploit the PI4KIIIβ-PI4P-OSBP pathway to direct cholesterol to replication organelles. Here, we uncover that TTP-8307, a known enterovirus replication inhibitor, acts through the PI4KIIIβ-PI4P-OSBP pathway by directly inhibiting OSBP activity. However, despite a shared mechanism of TTP-8307 with established OSBP inhibitors (itraconazole and OSW-1), we identify a number of notable differences between these compounds. The antiviral activity of TTP-8307 extends to other viruses that require OSBP, namely the picornavirus encephalomyocarditis virus and the flavivirus hepatitis C virus.
Reference Key
albulescu2017uncoveringantiviral Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Albulescu, Lucian;Bigay, Joëlle;Biswas, Bishyajit;Weber-Boyvat, Marion;Dorobantu, Cristina M;Delang, Leen;van der Schaar, Hilde M;Jung, Young-Sik;Neyts, Johan;Olkkonen, Vesa M;van Kuppeveld, Frank J M;Strating, Jeroen R P M;
Journal Antiviral research
Year 2017
DOI
S0166-3542(16)30556-3
URL
Keywords
antiviral replication osbp enterovirus ttp-8307

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