Serveur d'exploration COVID et hydrochloroquine

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Chloroquine may induce endothelial injury through lysosomal dysfunction and oxidative stress.

Identifieur interne : 000634 ( Main/Exploration ); précédent : 000633; suivant : 000635

Chloroquine may induce endothelial injury through lysosomal dysfunction and oxidative stress.

Auteurs : Pauloc Greg Rio [Brésil] ; Regiane S. Da Cunha [Brésil] ; Gilson Biagini [Brésil] ; Bruna Bosquetti [Brésil] ; Júlia Budag [Brésil] ; Alberto Ortiz [Espagne] ; Maria Dolores Sánchez-Ni O [Espagne] ; Fellype C. Barreto [Brésil] ; Andréa E M. Stinghen [Brésil]

Source :

RBID : pubmed:33484708

Descripteurs français

English descriptors

Abstract

COVID-19 is a pandemic with no end in sight. There is only one approved antiviral agent but global stocks are deemed insufficient. Despite in vitro antiviral activity, clinical trials of chloroquine and hydroxychloroquine were disappointing, and they may even impair outcomes. Chloroquine causes zebroid deposits reminiscent of Fabry disease (α-galactosidase A deficiency) and endothelial cells are key targets of COVID-19. We have explored the effect of chloroquine on cultured endothelial cells and its modulation by recombinant α-galactosidase A (agalsidase). Following dose-response studies, 0.5 μg/mL chloroquine was added to cultured human endothelial cells. Neutral red and Lysotracker were used to assess lysosomes. Cytotoxicity was evaluated by the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide) - MTT assay and cell stress by assessing reactive oxygen species (ROS) and nitric oxide (NO). In endothelial cells, chloroquine induced dose-dependent cytotoxicity at in vitro test concentrations for COVID-19 therapy. At a sublethal concentration, chloroquine significantly induced the accumulation of acid organelles (P < 0.05), increased ROS levels, and decreased NO production (P < 0.05). These adverse effects of chloroquine on endothelial cell biology were decreased by agalsidase-β (P < 0.05). Chloroquine-induced endothelial cell cytotoxicity and stress is attenuated by agalsidase-β treatment. This suggests that endothelial cell injury may contribute to the failure of chloroquine as therapy for COVID-19 and may be at least in part related to causing dysfunction of the lysosomal enzyme α-galactosidase A.

DOI: 10.1016/j.taap.2021.115412
PubMed: 33484708
PubMed Central: PMC7826090


Affiliations:


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Le document en format XML

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<term>COVID-19 (drug therapy)</term>
<term>Cell Survival (drug effects)</term>
<term>Cells, Cultured (MeSH)</term>
<term>Chloroquine (administration & dosage)</term>
<term>Chloroquine (adverse effects)</term>
<term>Chloroquine (therapeutic use)</term>
<term>Endothelial Cells (drug effects)</term>
<term>Endothelial Cells (metabolism)</term>
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<term>Endothelium, Vascular (metabolism)</term>
<term>Endothelium, Vascular (pathology)</term>
<term>Fabry Disease (chemically induced)</term>
<term>Humans (MeSH)</term>
<term>Lysosomes (drug effects)</term>
<term>Oxidative Stress (drug effects)</term>
<term>Pandemics (MeSH)</term>
<term>Reactive Oxygen Species (MeSH)</term>
<term>SARS-CoV-2 (MeSH)</term>
</keywords>
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<term>Cellules cultivées (MeSH)</term>
<term>Cellules endothéliales (anatomopathologie)</term>
<term>Cellules endothéliales (effets des médicaments et des substances chimiques)</term>
<term>Cellules endothéliales (métabolisme)</term>
<term>Chloroquine (administration et posologie)</term>
<term>Chloroquine (effets indésirables)</term>
<term>Chloroquine (usage thérapeutique)</term>
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<term>Endothélium vasculaire (effets des médicaments et des substances chimiques)</term>
<term>Endothélium vasculaire (métabolisme)</term>
<term>Espèces réactives de l'oxygène (MeSH)</term>
<term>Humains (MeSH)</term>
<term>Lysosomes (effets des médicaments et des substances chimiques)</term>
<term>Maladie de Fabry (induit chimiquement)</term>
<term>Pandémies (MeSH)</term>
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<term>Survie cellulaire (effets des médicaments et des substances chimiques)</term>
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<term>Chloroquine</term>
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<term>Endothelial Cells</term>
<term>Endothelium, Vascular</term>
<term>Lysosomes</term>
<term>Oxidative Stress</term>
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<term>COVID-19</term>
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<term>Endothélium vasculaire</term>
<term>Lysosomes</term>
<term>Stress oxydatif</term>
<term>Survie cellulaire</term>
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<term>Chloroquine</term>
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<term>Maladie de Fabry</term>
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<term>Endothelial Cells</term>
<term>Endothelium, Vascular</term>
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<term>Endothélium vasculaire</term>
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<term>Reactive Oxygen Species</term>
<term>SARS-CoV-2</term>
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<div type="abstract" xml:lang="en">COVID-19 is a pandemic with no end in sight. There is only one approved antiviral agent but global stocks are deemed insufficient. Despite in vitro antiviral activity, clinical trials of chloroquine and hydroxychloroquine were disappointing, and they may even impair outcomes. Chloroquine causes zebroid deposits reminiscent of Fabry disease (α-galactosidase A deficiency) and endothelial cells are key targets of COVID-19. We have explored the effect of chloroquine on cultured endothelial cells and its modulation by recombinant α-galactosidase A (agalsidase). Following dose-response studies, 0.5 μg/mL chloroquine was added to cultured human endothelial cells. Neutral red and Lysotracker were used to assess lysosomes. Cytotoxicity was evaluated by the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide) - MTT assay and cell stress by assessing reactive oxygen species (ROS) and nitric oxide (NO). In endothelial cells, chloroquine induced dose-dependent cytotoxicity at in vitro test concentrations for COVID-19 therapy. At a sublethal concentration, chloroquine significantly induced the accumulation of acid organelles (P < 0.05), increased ROS levels, and decreased NO production (P < 0.05). These adverse effects of chloroquine on endothelial cell biology were decreased by agalsidase-β (P < 0.05). Chloroquine-induced endothelial cell cytotoxicity and stress is attenuated by agalsidase-β treatment. This suggests that endothelial cell injury may contribute to the failure of chloroquine as therapy for COVID-19 and may be at least in part related to causing dysfunction of the lysosomal enzyme α-galactosidase A.</div>
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<AbstractText>COVID-19 is a pandemic with no end in sight. There is only one approved antiviral agent but global stocks are deemed insufficient. Despite in vitro antiviral activity, clinical trials of chloroquine and hydroxychloroquine were disappointing, and they may even impair outcomes. Chloroquine causes zebroid deposits reminiscent of Fabry disease (α-galactosidase A deficiency) and endothelial cells are key targets of COVID-19. We have explored the effect of chloroquine on cultured endothelial cells and its modulation by recombinant α-galactosidase A (agalsidase). Following dose-response studies, 0.5 μg/mL chloroquine was added to cultured human endothelial cells. Neutral red and Lysotracker were used to assess lysosomes. Cytotoxicity was evaluated by the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide) - MTT assay and cell stress by assessing reactive oxygen species (ROS) and nitric oxide (NO). In endothelial cells, chloroquine induced dose-dependent cytotoxicity at in vitro test concentrations for COVID-19 therapy. At a sublethal concentration, chloroquine significantly induced the accumulation of acid organelles (P < 0.05), increased ROS levels, and decreased NO production (P < 0.05). These adverse effects of chloroquine on endothelial cell biology were decreased by agalsidase-β (P < 0.05). Chloroquine-induced endothelial cell cytotoxicity and stress is attenuated by agalsidase-β treatment. This suggests that endothelial cell injury may contribute to the failure of chloroquine as therapy for COVID-19 and may be at least in part related to causing dysfunction of the lysosomal enzyme α-galactosidase A.</AbstractText>
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<DescriptorName UI="D058873" MajorTopicYN="N">Pandemics</DescriptorName>
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<DescriptorName UI="D000086402" MajorTopicYN="N">SARS-CoV-2</DescriptorName>
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<Keyword MajorTopicYN="Y">Agalsidase-β</Keyword>
<Keyword MajorTopicYN="Y">COVID-19</Keyword>
<Keyword MajorTopicYN="Y">Endothelial cells</Keyword>
<Keyword MajorTopicYN="Y">Fabry disease</Keyword>
<Keyword MajorTopicYN="Y">Oxidative stress</Keyword>
<Keyword MajorTopicYN="Y">Therapy</Keyword>
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<Month>12</Month>
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<ArticleId IdType="pmc">PMC7826090</ArticleId>
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<country>
<li>Brésil</li>
<li>Espagne</li>
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<li>Communauté de Madrid</li>
<li>Paraná (État)</li>
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<name sortKey="Barreto, Fellype C" sort="Barreto, Fellype C" uniqKey="Barreto F" first="Fellype C" last="Barreto">Fellype C. Barreto</name>
<name sortKey="Biagini, Gilson" sort="Biagini, Gilson" uniqKey="Biagini G" first="Gilson" last="Biagini">Gilson Biagini</name>
<name sortKey="Bosquetti, Bruna" sort="Bosquetti, Bruna" uniqKey="Bosquetti B" first="Bruna" last="Bosquetti">Bruna Bosquetti</name>
<name sortKey="Budag, Julia" sort="Budag, Julia" uniqKey="Budag J" first="Júlia" last="Budag">Júlia Budag</name>
<name sortKey="Da Cunha, Regiane S" sort="Da Cunha, Regiane S" uniqKey="Da Cunha R" first="Regiane S" last="Da Cunha">Regiane S. Da Cunha</name>
<name sortKey="Stinghen, Andrea E M" sort="Stinghen, Andrea E M" uniqKey="Stinghen A" first="Andréa E M" last="Stinghen">Andréa E M. Stinghen</name>
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<country name="Espagne">
<region name="Communauté de Madrid">
<name sortKey="Ortiz, Alberto" sort="Ortiz, Alberto" uniqKey="Ortiz A" first="Alberto" last="Ortiz">Alberto Ortiz</name>
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<name sortKey="Sanchez Ni O, Maria Dolores" sort="Sanchez Ni O, Maria Dolores" uniqKey="Sanchez Ni O M" first="Maria Dolores" last="Sánchez-Ni O">Maria Dolores Sánchez-Ni O</name>
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</record>

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