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AR-12 Inhibits Multiple Chaperones Concomitant With Stimulating Autophagosome Formation Collectively Preventing Virus Replication.

Identifieur interne : 000C04 ( Main/Exploration ); précédent : 000C03; suivant : 000C05

AR-12 Inhibits Multiple Chaperones Concomitant With Stimulating Autophagosome Formation Collectively Preventing Virus Replication.

Auteurs : Laurence Booth [États-Unis] ; Jane L. Roberts [États-Unis] ; Heath Ecroyd [Australie] ; Sarah R. Tritsch [États-Unis] ; Sina Bavari [États-Unis] ; St Patrick Reid [États-Unis] ; Stefan Proniuk [États-Unis] ; Alexander Zukiwski [États-Unis] ; Abraham Jacob [États-Unis] ; Claudia S. Sepúlveda [Argentine] ; Federico Giovannoni [Argentine] ; Cybele C. García [Argentine] ; Elsa Damonte [Argentine] ; Javier González-Gallego [Espagne] ; María J. Tu N [Espagne] ; Paul Dent [États-Unis]

Source :

RBID : pubmed:27187154

Descripteurs français

English descriptors

Abstract

We have recently demonstrated that AR-12 (OSU-03012) reduces the function and ATPase activities of multiple HSP90 and HSP70 family chaperones. Combined knock down of chaperones or AR-12 treatment acted to reduce the expression of virus receptors and essential glucosidase proteins. Combined knock down of chaperones or AR-12 treatment inactivated mTOR and elevated ATG13 S318 phosphorylation concomitant with inducing an endoplasmic reticulum stress response that in an eIF2α-dependent fashion increased Beclin1 and LC3 expression and autophagosome formation. Over-expression of chaperones prevented the reduction in receptor/glucosidase expression, mTOR inactivation, the ER stress response, and autophagosome formation. AR-12 reduced the reproduction of viruses including Mumps, Influenza, Measles, Junín, Rubella, HIV (wild type and protease resistant), and Ebola, an effect replicated by knock down of multiple chaperone proteins. AR-12-stimulated the co-localization of Influenza, EBV and HIV virus proteins with LC3 in autophagosomes and reduced viral protein association with the chaperones HSP90, HSP70, and GRP78. Knock down of Beclin1 suppressed drug-induced autophagosome formation and reduced the anti-viral protection afforded by AR-12. In an animal model of hemorrhagic fever virus, a transient exposure of animals to low doses of AR-12 doubled animal survival from ∼30% to ∼60% and suppressed liver damage as measured by ATL, GGT and LDH release. Thus through inhibition of chaperone protein functions; reducing the production, stability and processing of viral proteins; and stimulating autophagosome formation/viral protein degradation, AR-12 acts as a broad-specificity anti-viral drug in vitro and in vivo. We argue future patient studies with AR-12 are warranted. J. Cell. Physiol. 231: 2286-2302, 2016. © 2016 Wiley Periodicals, Inc.

DOI: 10.1002/jcp.25431
PubMed: 27187154


Affiliations:


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Le document en format XML

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<term>Autophagosomes (drug effects)</term>
<term>Autophagy (drug effects)</term>
<term>Cell Line</term>
<term>Endoplasmic Reticulum (drug effects)</term>
<term>Endoplasmic Reticulum (metabolism)</term>
<term>Endoplasmic Reticulum Stress (drug effects)</term>
<term>Endoplasmic Reticulum Stress (physiology)</term>
<term>Humans</term>
<term>Molecular Chaperones (metabolism)</term>
<term>Pyrazoles (pharmacology)</term>
<term>Sulfonamides (pharmacology)</term>
<term>Virus Replication (drug effects)</term>
<term>Virus Replication (physiology)</term>
</keywords>
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<term>Autophagie ()</term>
<term>Autophagosomes ()</term>
<term>Chaperons moléculaires (métabolisme)</term>
<term>Humains</term>
<term>Lignée cellulaire</term>
<term>Pyrazoles (pharmacologie)</term>
<term>Réplication virale ()</term>
<term>Réplication virale (physiologie)</term>
<term>Réticulum endoplasmique ()</term>
<term>Réticulum endoplasmique (métabolisme)</term>
<term>Stress du réticulum endoplasmique ()</term>
<term>Stress du réticulum endoplasmique (physiologie)</term>
<term>Sulfonamides (pharmacologie)</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en">
<term>Molecular Chaperones</term>
</keywords>
<keywords scheme="MESH" qualifier="drug effects" xml:lang="en">
<term>Autophagosomes</term>
<term>Autophagy</term>
<term>Endoplasmic Reticulum</term>
<term>Endoplasmic Reticulum Stress</term>
<term>Virus Replication</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en">
<term>Endoplasmic Reticulum</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr">
<term>Chaperons moléculaires</term>
<term>Réticulum endoplasmique</term>
</keywords>
<keywords scheme="MESH" qualifier="pharmacologie" xml:lang="fr">
<term>Pyrazoles</term>
<term>Sulfonamides</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="pharmacology" xml:lang="en">
<term>Pyrazoles</term>
<term>Sulfonamides</term>
</keywords>
<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr">
<term>Réplication virale</term>
<term>Stress du réticulum endoplasmique</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en">
<term>Endoplasmic Reticulum Stress</term>
<term>Virus Replication</term>
</keywords>
<keywords scheme="MESH" xml:lang="en">
<term>Cell Line</term>
<term>Humans</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr">
<term>Autophagie</term>
<term>Autophagosomes</term>
<term>Humains</term>
<term>Lignée cellulaire</term>
<term>Réplication virale</term>
<term>Réticulum endoplasmique</term>
<term>Stress du réticulum endoplasmique</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">We have recently demonstrated that AR-12 (OSU-03012) reduces the function and ATPase activities of multiple HSP90 and HSP70 family chaperones. Combined knock down of chaperones or AR-12 treatment acted to reduce the expression of virus receptors and essential glucosidase proteins. Combined knock down of chaperones or AR-12 treatment inactivated mTOR and elevated ATG13 S318 phosphorylation concomitant with inducing an endoplasmic reticulum stress response that in an eIF2α-dependent fashion increased Beclin1 and LC3 expression and autophagosome formation. Over-expression of chaperones prevented the reduction in receptor/glucosidase expression, mTOR inactivation, the ER stress response, and autophagosome formation. AR-12 reduced the reproduction of viruses including Mumps, Influenza, Measles, Junín, Rubella, HIV (wild type and protease resistant), and Ebola, an effect replicated by knock down of multiple chaperone proteins. AR-12-stimulated the co-localization of Influenza, EBV and HIV virus proteins with LC3 in autophagosomes and reduced viral protein association with the chaperones HSP90, HSP70, and GRP78. Knock down of Beclin1 suppressed drug-induced autophagosome formation and reduced the anti-viral protection afforded by AR-12. In an animal model of hemorrhagic fever virus, a transient exposure of animals to low doses of AR-12 doubled animal survival from ∼30% to ∼60% and suppressed liver damage as measured by ATL, GGT and LDH release. Thus through inhibition of chaperone protein functions; reducing the production, stability and processing of viral proteins; and stimulating autophagosome formation/viral protein degradation, AR-12 acts as a broad-specificity anti-viral drug in vitro and in vivo. We argue future patient studies with AR-12 are warranted. J. Cell. Physiol. 231: 2286-2302, 2016. © 2016 Wiley Periodicals, Inc.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Argentine</li>
<li>Australie</li>
<li>Espagne</li>
<li>États-Unis</li>
</country>
<region>
<li>Arizona</li>
<li>Maryland</li>
<li>New Jersey</li>
<li>Virginie</li>
</region>
</list>
<tree>
<country name="États-Unis">
<region name="Virginie">
<name sortKey="Booth, Laurence" sort="Booth, Laurence" uniqKey="Booth L" first="Laurence" last="Booth">Laurence Booth</name>
</region>
<name sortKey="Bavari, Sina" sort="Bavari, Sina" uniqKey="Bavari S" first="Sina" last="Bavari">Sina Bavari</name>
<name sortKey="Dent, Paul" sort="Dent, Paul" uniqKey="Dent P" first="Paul" last="Dent">Paul Dent</name>
<name sortKey="Jacob, Abraham" sort="Jacob, Abraham" uniqKey="Jacob A" first="Abraham" last="Jacob">Abraham Jacob</name>
<name sortKey="Proniuk, Stefan" sort="Proniuk, Stefan" uniqKey="Proniuk S" first="Stefan" last="Proniuk">Stefan Proniuk</name>
<name sortKey="Reid, St Patrick" sort="Reid, St Patrick" uniqKey="Reid S" first="St Patrick" last="Reid">St Patrick Reid</name>
<name sortKey="Roberts, Jane L" sort="Roberts, Jane L" uniqKey="Roberts J" first="Jane L" last="Roberts">Jane L. Roberts</name>
<name sortKey="Tritsch, Sarah R" sort="Tritsch, Sarah R" uniqKey="Tritsch S" first="Sarah R" last="Tritsch">Sarah R. Tritsch</name>
<name sortKey="Zukiwski, Alexander" sort="Zukiwski, Alexander" uniqKey="Zukiwski A" first="Alexander" last="Zukiwski">Alexander Zukiwski</name>
</country>
<country name="Australie">
<noRegion>
<name sortKey="Ecroyd, Heath" sort="Ecroyd, Heath" uniqKey="Ecroyd H" first="Heath" last="Ecroyd">Heath Ecroyd</name>
</noRegion>
</country>
<country name="Argentine">
<noRegion>
<name sortKey="Sepulveda, Claudia S" sort="Sepulveda, Claudia S" uniqKey="Sepulveda C" first="Claudia S" last="Sepúlveda">Claudia S. Sepúlveda</name>
</noRegion>
<name sortKey="Damonte, Elsa" sort="Damonte, Elsa" uniqKey="Damonte E" first="Elsa" last="Damonte">Elsa Damonte</name>
<name sortKey="Garcia, Cybele C" sort="Garcia, Cybele C" uniqKey="Garcia C" first="Cybele C" last="García">Cybele C. García</name>
<name sortKey="Giovannoni, Federico" sort="Giovannoni, Federico" uniqKey="Giovannoni F" first="Federico" last="Giovannoni">Federico Giovannoni</name>
</country>
<country name="Espagne">
<noRegion>
<name sortKey="Gonzalez Gallego, Javier" sort="Gonzalez Gallego, Javier" uniqKey="Gonzalez Gallego J" first="Javier" last="González-Gallego">Javier González-Gallego</name>
</noRegion>
<name sortKey="Tu N, Maria J" sort="Tu N, Maria J" uniqKey="Tu N M" first="María J" last="Tu N">María J. Tu N</name>
</country>
</tree>
</affiliations>
</record>

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