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Sin1 (Stress-Activated Protein Kinase-Interacting Protein) Regulates Ischemia-Induced Microthrombosis Through Integrin αIIbβ3-Mediated Outside-In Signaling and Hypoxia Responses in Platelets.

Identifieur interne : 000493 ( Main/Exploration ); précédent : 000492; suivant : 000494

Sin1 (Stress-Activated Protein Kinase-Interacting Protein) Regulates Ischemia-Induced Microthrombosis Through Integrin αIIbβ3-Mediated Outside-In Signaling and Hypoxia Responses in Platelets.

Auteurs : Yanyan Xu [République populaire de Chine] ; Xinxing Ouyang [République populaire de Chine] ; Lichong Yan [République populaire de Chine] ; Mingliang Zhang ; Zhenlei Hu ; Jianmin Gu [République populaire de Chine] ; Xuemei Fan [République populaire de Chine] ; Lin Zhang [République populaire de Chine] ; Junfeng Zhang ; Song Xue [République populaire de Chine] ; Guoqiang Chen [République populaire de Chine] ; Bing Su [République populaire de Chine] ; Junling Liu [République populaire de Chine]

Source :

RBID : pubmed:30571167

Descripteurs français

English descriptors

Abstract

Objective- Microthrombosis as a serious consequence of myocardial infarction, impairs the microvascular environment and increases the occurrences of heart failure, arrhythmia, and death. Sin1 (stress-activated protein kinase-interacting protein) as an essential component of mTORC2 (mammalian target of rapamycin complex 2) is required for cell proliferation and metabolism in response to nutrients, stress, and reactive oxygen species and activates Akt and PKC (protein kinase C). However, the activation and function of Sin1/mTORC2 in ischemia-induced microthrombosis remain poorly understood. Approach and Results- The phosphorylation of the mTORC2 target Akt at S473 (serine 473) was significantly elevated in platelets from the distal end of left anterior descending obstructions from patients who underwent off-pump coronary artery bypass grafting compared with platelets from healthy subjects. Consistent with this finding, phosphorylation of T86 in Sin1 was also dramatically increased. Importantly, the augmented levels of phosphorylated Sin1 and Akt in platelets from 61 preoperative patients with ST-segment-elevation myocardial infarction correlated well with the no-reflow phenomena observed after revascularization. Platelet-specific Sin1 deficiency mice and Sin1 T86 phosphorylation deficiency mice were established to explore the underlying mechanisms in platelet activation. Mechanistically, Sin1 T86 phosphorylation amplifies mTORC2-mediated downstream signals; it is also required for αIIbβ3-mediated outside-in signaling and plays a role in generating hypoxia/reactive oxygen species through NAD+/Sirt3 (sirtuin 3)/SOD2 (superoxide dismutase 2) pathway. Importantly, Sin1 deletion in platelets protected mice from ischemia-induced microvascular embolization and subsequent heart dysfunction in a mouse model of myocardial infarction. Conclusions- Together, the results of our study reveal a novel role for Sin1 in platelet activation. Thus, Sin1 may be a valuable therapeutic target for interventions for ischemia-induced myocardial infarction deterioration.

DOI: 10.1161/ATVBAHA.118.311822
PubMed: 30571167


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<nlm:affiliation>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine, China.</nlm:affiliation>
<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine</wicri:regionArea>
<wicri:noRegion>Shanghai Jiao Tong University School of Medicine</wicri:noRegion>
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<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>Department of Cardiovascular Surgery, Renji Hospital (J.G., S.X.), Shanghai Jiao Tong University School of Medicine</wicri:regionArea>
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<name sortKey="Fan, Xuemei" sort="Fan, Xuemei" uniqKey="Fan X" first="Xuemei" last="Fan">Xuemei Fan</name>
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<nlm:affiliation>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine, China.</nlm:affiliation>
<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine</wicri:regionArea>
<wicri:noRegion>Shanghai Jiao Tong University School of Medicine</wicri:noRegion>
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<name sortKey="Zhang, Lin" sort="Zhang, Lin" uniqKey="Zhang L" first="Lin" last="Zhang">Lin Zhang</name>
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<nlm:affiliation>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine, China.</nlm:affiliation>
<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine</wicri:regionArea>
<wicri:noRegion>Shanghai Jiao Tong University School of Medicine</wicri:noRegion>
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<name sortKey="Zhang, Junfeng" sort="Zhang, Junfeng" uniqKey="Zhang J" first="Junfeng" last="Zhang">Junfeng Zhang</name>
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<name sortKey="Xue, Song" sort="Xue, Song" uniqKey="Xue S" first="Song" last="Xue">Song Xue</name>
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<nlm:affiliation>Department of Cardiovascular Surgery, Renji Hospital (J.G., S.X.), Shanghai Jiao Tong University School of Medicine, China.</nlm:affiliation>
<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>Department of Cardiovascular Surgery, Renji Hospital (J.G., S.X.), Shanghai Jiao Tong University School of Medicine</wicri:regionArea>
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<name sortKey="Chen, Guoqiang" sort="Chen, Guoqiang" uniqKey="Chen G" first="Guoqiang" last="Chen">Guoqiang Chen</name>
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<nlm:affiliation>Department of Pathophysiology (G.C.), Shanghai Jiao Tong University School of Medicine, China.</nlm:affiliation>
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<name sortKey="Liu, Junling" sort="Liu, Junling" uniqKey="Liu J" first="Junling" last="Liu">Junling Liu</name>
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<term>Adaptor Proteins, Signal Transducing (blood)</term>
<term>Adult (MeSH)</term>
<term>Aged (MeSH)</term>
<term>Aged, 80 and over (MeSH)</term>
<term>Animals (MeSH)</term>
<term>Blood Platelets (enzymology)</term>
<term>Carrier Proteins (blood)</term>
<term>Carrier Proteins (genetics)</term>
<term>Cell Hypoxia (MeSH)</term>
<term>Disease Models, Animal (MeSH)</term>
<term>Female (MeSH)</term>
<term>Humans (MeSH)</term>
<term>Male (MeSH)</term>
<term>Mechanistic Target of Rapamycin Complex 2 (metabolism)</term>
<term>Mice, Inbred C57BL (MeSH)</term>
<term>Mice, Knockout (MeSH)</term>
<term>Middle Aged (MeSH)</term>
<term>Myocardial Infarction (complications)</term>
<term>Phosphorylation (MeSH)</term>
<term>Platelet Activation (MeSH)</term>
<term>Platelet Glycoprotein GPIIb-IIIa Complex (metabolism)</term>
<term>Proto-Oncogene Proteins c-akt (blood)</term>
<term>Reactive Oxygen Species (blood)</term>
<term>Signal Transduction (MeSH)</term>
<term>Sirtuin 3 (blood)</term>
<term>Sirtuin 3 (genetics)</term>
<term>Superoxide Dismutase (blood)</term>
<term>Superoxide Dismutase (genetics)</term>
<term>Thrombosis (blood)</term>
<term>Thrombosis (enzymology)</term>
<term>Thrombosis (genetics)</term>
<term>Thrombosis (prevention & control)</term>
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<keywords scheme="KwdFr" xml:lang="fr">
<term>Activation plaquettaire (MeSH)</term>
<term>Adulte (MeSH)</term>
<term>Adulte d'âge moyen (MeSH)</term>
<term>Animaux (MeSH)</term>
<term>Complexe glycoprotéique IIb-IIIa de la membrane plaquettaire (métabolisme)</term>
<term>Complexe-2 cible mécanistique de la rapamycine (métabolisme)</term>
<term>Espèces réactives de l'oxygène (sang)</term>
<term>Femelle (MeSH)</term>
<term>Humains (MeSH)</term>
<term>Hypoxie cellulaire (MeSH)</term>
<term>Infarctus du myocarde (complications)</term>
<term>Modèles animaux de maladie humaine (MeSH)</term>
<term>Mâle (MeSH)</term>
<term>Phosphorylation (MeSH)</term>
<term>Plaquettes (enzymologie)</term>
<term>Protéines adaptatrices de la transduction du signal (sang)</term>
<term>Protéines de transport (génétique)</term>
<term>Protéines de transport (sang)</term>
<term>Protéines proto-oncogènes c-akt (sang)</term>
<term>Sirtuine-3 (génétique)</term>
<term>Sirtuine-3 (sang)</term>
<term>Souris de lignée C57BL (MeSH)</term>
<term>Souris knockout (MeSH)</term>
<term>Sujet âgé (MeSH)</term>
<term>Sujet âgé de 80 ans ou plus (MeSH)</term>
<term>Superoxide dismutase (génétique)</term>
<term>Superoxide dismutase (sang)</term>
<term>Thrombose (enzymologie)</term>
<term>Thrombose (génétique)</term>
<term>Thrombose (prévention et contrôle)</term>
<term>Thrombose (sang)</term>
<term>Transduction du signal (MeSH)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="blood" xml:lang="en">
<term>Adaptor Proteins, Signal Transducing</term>
<term>Carrier Proteins</term>
<term>Proto-Oncogene Proteins c-akt</term>
<term>Reactive Oxygen Species</term>
<term>Sirtuin 3</term>
<term>Superoxide Dismutase</term>
</keywords>
<keywords scheme="MESH" qualifier="blood" xml:lang="en">
<term>Thrombosis</term>
</keywords>
<keywords scheme="MESH" qualifier="complications" xml:lang="en">
<term>Myocardial Infarction</term>
</keywords>
<keywords scheme="MESH" qualifier="enzymologie" xml:lang="fr">
<term>Plaquettes</term>
<term>Thrombose</term>
</keywords>
<keywords scheme="MESH" qualifier="enzymology" xml:lang="en">
<term>Blood Platelets</term>
<term>Thrombosis</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en">
<term>Carrier Proteins</term>
<term>Sirtuin 3</term>
<term>Superoxide Dismutase</term>
<term>Thrombosis</term>
</keywords>
<keywords scheme="MESH" qualifier="génétique" xml:lang="fr">
<term>Protéines de transport</term>
<term>Sirtuine-3</term>
<term>Superoxide dismutase</term>
<term>Thrombose</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en">
<term>Mechanistic Target of Rapamycin Complex 2</term>
<term>Platelet Glycoprotein GPIIb-IIIa Complex</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr">
<term>Complexe glycoprotéique IIb-IIIa de la membrane plaquettaire</term>
<term>Complexe-2 cible mécanistique de la rapamycine</term>
</keywords>
<keywords scheme="MESH" qualifier="prevention & control" xml:lang="en">
<term>Thrombosis</term>
</keywords>
<keywords scheme="MESH" qualifier="prévention et contrôle" xml:lang="fr">
<term>Thrombose</term>
</keywords>
<keywords scheme="MESH" qualifier="sang" xml:lang="fr">
<term>Espèces réactives de l'oxygène</term>
<term>Infarctus du myocarde</term>
<term>Protéines adaptatrices de la transduction du signal</term>
<term>Protéines de transport</term>
<term>Protéines proto-oncogènes c-akt</term>
<term>Sirtuine-3</term>
<term>Superoxide dismutase</term>
<term>Thrombose</term>
</keywords>
<keywords scheme="MESH" xml:lang="en">
<term>Adult</term>
<term>Aged</term>
<term>Aged, 80 and over</term>
<term>Animals</term>
<term>Cell Hypoxia</term>
<term>Disease Models, Animal</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
<term>Mice, Inbred C57BL</term>
<term>Mice, Knockout</term>
<term>Middle Aged</term>
<term>Phosphorylation</term>
<term>Platelet Activation</term>
<term>Signal Transduction</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr">
<term>Activation plaquettaire</term>
<term>Adulte</term>
<term>Adulte d'âge moyen</term>
<term>Animaux</term>
<term>Femelle</term>
<term>Humains</term>
<term>Hypoxie cellulaire</term>
<term>Modèles animaux de maladie humaine</term>
<term>Mâle</term>
<term>Phosphorylation</term>
<term>Souris de lignée C57BL</term>
<term>Souris knockout</term>
<term>Sujet âgé</term>
<term>Sujet âgé de 80 ans ou plus</term>
<term>Transduction du signal</term>
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<front>
<div type="abstract" xml:lang="en">Objective- Microthrombosis as a serious consequence of myocardial infarction, impairs the microvascular environment and increases the occurrences of heart failure, arrhythmia, and death. Sin1 (stress-activated protein kinase-interacting protein) as an essential component of mTORC2 (mammalian target of rapamycin complex 2) is required for cell proliferation and metabolism in response to nutrients, stress, and reactive oxygen species and activates Akt and PKC (protein kinase C). However, the activation and function of Sin1/mTORC2 in ischemia-induced microthrombosis remain poorly understood. Approach and Results- The phosphorylation of the mTORC2 target Akt at S473 (serine 473) was significantly elevated in platelets from the distal end of left anterior descending obstructions from patients who underwent off-pump coronary artery bypass grafting compared with platelets from healthy subjects. Consistent with this finding, phosphorylation of T86 in Sin1 was also dramatically increased. Importantly, the augmented levels of phosphorylated Sin1 and Akt in platelets from 61 preoperative patients with ST-segment-elevation myocardial infarction correlated well with the no-reflow phenomena observed after revascularization. Platelet-specific Sin1 deficiency mice and Sin1 T86 phosphorylation deficiency mice were established to explore the underlying mechanisms in platelet activation. Mechanistically, Sin1 T86 phosphorylation amplifies mTORC2-mediated downstream signals; it is also required for αIIbβ3-mediated outside-in signaling and plays a role in generating hypoxia/reactive oxygen species through NAD
<sup>+</sup>
/Sirt3 (sirtuin 3)/SOD2 (superoxide dismutase 2) pathway. Importantly, Sin1 deletion in platelets protected mice from ischemia-induced microvascular embolization and subsequent heart dysfunction in a mouse model of myocardial infarction. Conclusions- Together, the results of our study reveal a novel role for Sin1 in platelet activation. Thus, Sin1 may be a valuable therapeutic target for interventions for ischemia-induced myocardial infarction deterioration.</div>
</front>
</TEI>
<pubmed>
<MedlineCitation Status="MEDLINE" Owner="NLM">
<PMID Version="1">30571167</PMID>
<DateCompleted>
<Year>2019</Year>
<Month>07</Month>
<Day>29</Day>
</DateCompleted>
<DateRevised>
<Year>2019</Year>
<Month>07</Month>
<Day>29</Day>
</DateRevised>
<Article PubModel="Print">
<Journal>
<ISSN IssnType="Electronic">1524-4636</ISSN>
<JournalIssue CitedMedium="Internet">
<Volume>38</Volume>
<Issue>12</Issue>
<PubDate>
<Year>2018</Year>
<Month>12</Month>
</PubDate>
</JournalIssue>
<Title>Arteriosclerosis, thrombosis, and vascular biology</Title>
<ISOAbbreviation>Arterioscler Thromb Vasc Biol</ISOAbbreviation>
</Journal>
<ArticleTitle>Sin1 (Stress-Activated Protein Kinase-Interacting Protein) Regulates Ischemia-Induced Microthrombosis Through Integrin αIIbβ3-Mediated Outside-In Signaling and Hypoxia Responses in Platelets.</ArticleTitle>
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<Abstract>
<AbstractText>Objective- Microthrombosis as a serious consequence of myocardial infarction, impairs the microvascular environment and increases the occurrences of heart failure, arrhythmia, and death. Sin1 (stress-activated protein kinase-interacting protein) as an essential component of mTORC2 (mammalian target of rapamycin complex 2) is required for cell proliferation and metabolism in response to nutrients, stress, and reactive oxygen species and activates Akt and PKC (protein kinase C). However, the activation and function of Sin1/mTORC2 in ischemia-induced microthrombosis remain poorly understood. Approach and Results- The phosphorylation of the mTORC2 target Akt at S473 (serine 473) was significantly elevated in platelets from the distal end of left anterior descending obstructions from patients who underwent off-pump coronary artery bypass grafting compared with platelets from healthy subjects. Consistent with this finding, phosphorylation of T86 in Sin1 was also dramatically increased. Importantly, the augmented levels of phosphorylated Sin1 and Akt in platelets from 61 preoperative patients with ST-segment-elevation myocardial infarction correlated well with the no-reflow phenomena observed after revascularization. Platelet-specific Sin1 deficiency mice and Sin1 T86 phosphorylation deficiency mice were established to explore the underlying mechanisms in platelet activation. Mechanistically, Sin1 T86 phosphorylation amplifies mTORC2-mediated downstream signals; it is also required for αIIbβ3-mediated outside-in signaling and plays a role in generating hypoxia/reactive oxygen species through NAD
<sup>+</sup>
/Sirt3 (sirtuin 3)/SOD2 (superoxide dismutase 2) pathway. Importantly, Sin1 deletion in platelets protected mice from ischemia-induced microvascular embolization and subsequent heart dysfunction in a mouse model of myocardial infarction. Conclusions- Together, the results of our study reveal a novel role for Sin1 in platelet activation. Thus, Sin1 may be a valuable therapeutic target for interventions for ischemia-induced myocardial infarction deterioration.</AbstractText>
</Abstract>
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<Author ValidYN="Y">
<LastName>Xu</LastName>
<ForeName>Yanyan</ForeName>
<Initials>Y</Initials>
<AffiliationInfo>
<Affiliation>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine, China.</Affiliation>
</AffiliationInfo>
</Author>
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<LastName>Ouyang</LastName>
<ForeName>Xinxing</ForeName>
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<AffiliationInfo>
<Affiliation>Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Immunology and Microbiology and Molecular Cell Biology (X.O., L.Y., B.S.), Shanghai Jiao Tong University School of Medicine, China.</Affiliation>
</AffiliationInfo>
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<Affiliation>Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Department of Immunology and Microbiology and Molecular Cell Biology (X.O., L.Y., B.S.), Shanghai Jiao Tong University School of Medicine, China.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Zhang</LastName>
<ForeName>Mingliang</ForeName>
<Initials>M</Initials>
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<Affiliation>Department of Cardiology, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China (M.Z., Z.H.).</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Hu</LastName>
<ForeName>Zhenlei</ForeName>
<Initials>Z</Initials>
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<Affiliation>Department of Cardiology, Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China (M.Z., Z.H.).</Affiliation>
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</Author>
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<ForeName>Song</ForeName>
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<Affiliation>Department of Cardiovascular Surgery, Renji Hospital (J.G., S.X.), Shanghai Jiao Tong University School of Medicine, China.</Affiliation>
</AffiliationInfo>
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<LastName>Chen</LastName>
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<ForeName>Junling</ForeName>
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<Affiliation>From the Department of Biochemistry and Molecular Cell Biology (Y.X., X.F., L.Z., J.L.), Shanghai Jiao Tong University School of Medicine, China.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Collaborative Innovation Center of Hematology, Soochow University, China (J.L.).</Affiliation>
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