α2β1 integrin, GPVI receptor, and common FcRγ chain on mouse platelets mediate distinct responses to collagen in models of thrombosis

Platelets express the α2β1 integrin and the glycoprotein VI (GPVI)/FcRγ complex, both collagen receptors. Understanding platelet-collagen receptor function has been enhanced through use of genetically modified mouse models. Previous studies of GPVI/FcRγ-mediated collagen-induced platelet activation...

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Veröffentlicht in:PloS one 2014-11, Vol.9 (11), p.e114035
Hauptverfasser: Marjoram, Robin J, Li, Zhengzhi, He, Li, Tollefsen, Douglas M, Kunicki, Thomas J, Dickeson, S Kent, Santoro, Samuel A, Zutter, Mary M
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container_issue 11
container_start_page e114035
container_title PloS one
container_volume 9
creator Marjoram, Robin J
Li, Zhengzhi
He, Li
Tollefsen, Douglas M
Kunicki, Thomas J
Dickeson, S Kent
Santoro, Samuel A
Zutter, Mary M
description Platelets express the α2β1 integrin and the glycoprotein VI (GPVI)/FcRγ complex, both collagen receptors. Understanding platelet-collagen receptor function has been enhanced through use of genetically modified mouse models. Previous studies of GPVI/FcRγ-mediated collagen-induced platelet activation were perfomed with mice in which the FcRγ subunit was genetically deleted (FcRγ-/-) or the complex was depleted. The development of α2β1-/- and GPVI-/- mice permits side-by-side comparison to address contributions of these collagen receptors in vivo and in vitro. To understand the different roles played by the α2β1 integrin, the GPVI receptor or FcRγ subunit in collagen-stimulated hemostasis and thrombosis, we compared α2β1-/-, FcRγ-/-, and GPVI-/- mice in models of endothelial injury and intravascular thrombosis in vivo and their platelets in collagen-stimulated activation in vitro. We demonstrate that both the α2β1 integrin and the GPVI receptor, but not the FcRγ subunit influence carotid artery occlusion in vivo. In contrast, the GPVI receptor and the FcRγ chain, but not the α2β1 integrin, play similar roles in intravascular thrombosis in response to soluble Type I collagen. FcRγ-/- platelets showed less attenuation of tyrosine phosphorylation of several proteins including RhoGDI when compared to GPVI-/- and wild type platelets. The difference between FcRγ-/- and GPVI-/- platelet phosphotyrosine levels correlated with the in vivo thrombosis findings. Our data demonstrate that genetic deletion of GPVI receptor, FcRγ chain, or the α2β1 integrin changes the thrombotic potentials of these platelets to collagen dependent on the stimulus mechanism. The data suggest that the FcRγ chain may provide a dominant negative effect through modulating signaling pathways in platelets involving several tyrosine phosphorylated proteins such as RhoGDI. In addition, these findings suggest a more complex signaling network downstream of the platelet collagen receptors than previously appreciated.
doi_str_mv 10.1371/journal.pone.0114035
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Understanding platelet-collagen receptor function has been enhanced through use of genetically modified mouse models. Previous studies of GPVI/FcRγ-mediated collagen-induced platelet activation were perfomed with mice in which the FcRγ subunit was genetically deleted (FcRγ-/-) or the complex was depleted. The development of α2β1-/- and GPVI-/- mice permits side-by-side comparison to address contributions of these collagen receptors in vivo and in vitro. To understand the different roles played by the α2β1 integrin, the GPVI receptor or FcRγ subunit in collagen-stimulated hemostasis and thrombosis, we compared α2β1-/-, FcRγ-/-, and GPVI-/- mice in models of endothelial injury and intravascular thrombosis in vivo and their platelets in collagen-stimulated activation in vitro. We demonstrate that both the α2β1 integrin and the GPVI receptor, but not the FcRγ subunit influence carotid artery occlusion in vivo. In contrast, the GPVI receptor and the FcRγ chain, but not the α2β1 integrin, play similar roles in intravascular thrombosis in response to soluble Type I collagen. FcRγ-/- platelets showed less attenuation of tyrosine phosphorylation of several proteins including RhoGDI when compared to GPVI-/- and wild type platelets. The difference between FcRγ-/- and GPVI-/- platelet phosphotyrosine levels correlated with the in vivo thrombosis findings. Our data demonstrate that genetic deletion of GPVI receptor, FcRγ chain, or the α2β1 integrin changes the thrombotic potentials of these platelets to collagen dependent on the stimulus mechanism. The data suggest that the FcRγ chain may provide a dominant negative effect through modulating signaling pathways in platelets involving several tyrosine phosphorylated proteins such as RhoGDI. In addition, these findings suggest a more complex signaling network downstream of the platelet collagen receptors than previously appreciated.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0114035</identifier><identifier>PMID: 25415203</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Activation ; Animal models ; Animals ; Biology and Life Sciences ; Blood clots ; Blood platelets ; Blood Platelets - metabolism ; Carotid artery ; Cerebral blood flow ; Chains ; Collagen ; Collagen (type I) ; Collagen - adverse effects ; Collagen - pharmacology ; Disease Models, Animal ; Genetic modification ; Glycoprotein VI ; Glycoproteins ; Hemostasis ; Hemostatics ; Immunoglobulins ; Immunology ; Integrin alpha2beta1 - genetics ; Integrin alpha2beta1 - metabolism ; Ischemia ; Medicine ; Medicine and Health Sciences ; Mice ; Mice, Knockout ; Mutation ; Occlusion ; Pathology ; Phosphorylation ; Phosphotyrosine ; Platelet Activation - drug effects ; Platelet Activation - genetics ; Platelet Membrane Glycoproteins - genetics ; Platelet Membrane Glycoproteins - metabolism ; Platelets ; Proteins ; Rats ; Receptor mechanisms ; Receptors ; Receptors, IgG - genetics ; Receptors, IgG - metabolism ; Research and Analysis Methods ; Signaling ; Thromboembolism ; Thrombosis ; Thrombosis - chemically induced ; Thrombosis - genetics ; Thrombosis - metabolism ; Tyrosine</subject><ispartof>PloS one, 2014-11, Vol.9 (11), p.e114035</ispartof><rights>2014 Marjoram et al. 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drug effects</subject><subject>Platelet Activation - genetics</subject><subject>Platelet Membrane Glycoproteins - genetics</subject><subject>Platelet Membrane Glycoproteins - metabolism</subject><subject>Platelets</subject><subject>Proteins</subject><subject>Rats</subject><subject>Receptor mechanisms</subject><subject>Receptors</subject><subject>Receptors, IgG - genetics</subject><subject>Receptors, IgG - metabolism</subject><subject>Research and Analysis Methods</subject><subject>Signaling</subject><subject>Thromboembolism</subject><subject>Thrombosis</subject><subject>Thrombosis - chemically induced</subject><subject>Thrombosis - genetics</subject><subject>Thrombosis - metabolism</subject><subject>Tyrosine</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNp1ktFuFCEUhidGY2v1DYySeNtdgWEYuDExja2bNNEY9ZawzGGXDQMrsCa-ga-jvsc-k6w7bdoLrzgczv-dP-RvmucEz0nbk9ebuEtB-_k2BphjQhhuuwfNKZEtnXGK24d36pPmSc4bjLtWcP64OaEdI13tnzY_97_o_jdBLhRYJRfO0dXHrwuUwMC2xHSOdBiQieMYA7o0n_Z_kFlrF1C9jnGXAW29LuChZDTC4GqNBpeLC6ZUSK7mMmRUYmV4r1cQ6qaqHMBnFC0q6xTHZcwuP20eWe0zPJvOs-bL5bvPF-9n1x-uFhdvr2eGVc-zHizXIAEkNlbL3mByKJhkVPcSMBjZU2atIUIKyXrSaW4pJwLrwRJg7Vnz8sjd-pjV9IlZEU65oLQTvE4sjhND1Bu1TW7U6YeK2ql_jZhWSqfijAelMREcc6yp4UwwsVwyKaoh2murDSWV9WbatlvW_zEQStL-HvT-S3BrtYrfFaMMc95XwKsJkOK3HeTyH8vsOGVSzDmBvd1AsDqk5UalDmlRU1qq7MVdd7eim3i0fwEGSMFq</recordid><startdate>20141121</startdate><enddate>20141121</enddate><creator>Marjoram, Robin J</creator><creator>Li, Zhengzhi</creator><creator>He, Li</creator><creator>Tollefsen, Douglas M</creator><creator>Kunicki, Thomas J</creator><creator>Dickeson, S Kent</creator><creator>Santoro, Samuel A</creator><creator>Zutter, Mary M</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20141121</creationdate><title>α2β1 integrin, GPVI receptor, and common FcRγ chain on mouse platelets mediate distinct responses to collagen in models of thrombosis</title><author>Marjoram, Robin J ; Li, Zhengzhi ; He, Li ; Tollefsen, Douglas M ; Kunicki, Thomas J ; Dickeson, S Kent ; Santoro, Samuel A ; Zutter, Mary M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4415-7ef6ae9ee90cfa97c010cfa4942a79e0ec9724ffc189894715a6f26180adf1e43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Activation</topic><topic>Animal models</topic><topic>Animals</topic><topic>Biology and Life Sciences</topic><topic>Blood clots</topic><topic>Blood platelets</topic><topic>Blood Platelets - metabolism</topic><topic>Carotid artery</topic><topic>Cerebral blood flow</topic><topic>Chains</topic><topic>Collagen</topic><topic>Collagen (type I)</topic><topic>Collagen - adverse effects</topic><topic>Collagen - pharmacology</topic><topic>Disease Models, Animal</topic><topic>Genetic modification</topic><topic>Glycoprotein VI</topic><topic>Glycoproteins</topic><topic>Hemostasis</topic><topic>Hemostatics</topic><topic>Immunoglobulins</topic><topic>Immunology</topic><topic>Integrin alpha2beta1 - genetics</topic><topic>Integrin alpha2beta1 - metabolism</topic><topic>Ischemia</topic><topic>Medicine</topic><topic>Medicine and Health Sciences</topic><topic>Mice</topic><topic>Mice, Knockout</topic><topic>Mutation</topic><topic>Occlusion</topic><topic>Pathology</topic><topic>Phosphorylation</topic><topic>Phosphotyrosine</topic><topic>Platelet Activation - drug effects</topic><topic>Platelet Activation - genetics</topic><topic>Platelet Membrane Glycoproteins - genetics</topic><topic>Platelet Membrane Glycoproteins - 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Understanding platelet-collagen receptor function has been enhanced through use of genetically modified mouse models. Previous studies of GPVI/FcRγ-mediated collagen-induced platelet activation were perfomed with mice in which the FcRγ subunit was genetically deleted (FcRγ-/-) or the complex was depleted. The development of α2β1-/- and GPVI-/- mice permits side-by-side comparison to address contributions of these collagen receptors in vivo and in vitro. To understand the different roles played by the α2β1 integrin, the GPVI receptor or FcRγ subunit in collagen-stimulated hemostasis and thrombosis, we compared α2β1-/-, FcRγ-/-, and GPVI-/- mice in models of endothelial injury and intravascular thrombosis in vivo and their platelets in collagen-stimulated activation in vitro. We demonstrate that both the α2β1 integrin and the GPVI receptor, but not the FcRγ subunit influence carotid artery occlusion in vivo. In contrast, the GPVI receptor and the FcRγ chain, but not the α2β1 integrin, play similar roles in intravascular thrombosis in response to soluble Type I collagen. FcRγ-/- platelets showed less attenuation of tyrosine phosphorylation of several proteins including RhoGDI when compared to GPVI-/- and wild type platelets. The difference between FcRγ-/- and GPVI-/- platelet phosphotyrosine levels correlated with the in vivo thrombosis findings. Our data demonstrate that genetic deletion of GPVI receptor, FcRγ chain, or the α2β1 integrin changes the thrombotic potentials of these platelets to collagen dependent on the stimulus mechanism. The data suggest that the FcRγ chain may provide a dominant negative effect through modulating signaling pathways in platelets involving several tyrosine phosphorylated proteins such as RhoGDI. In addition, these findings suggest a more complex signaling network downstream of the platelet collagen receptors than previously appreciated.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25415203</pmid><doi>10.1371/journal.pone.0114035</doi><oa>free_for_read</oa></addata></record>
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subjects Activation
Animal models
Animals
Biology and Life Sciences
Blood clots
Blood platelets
Blood Platelets - metabolism
Carotid artery
Cerebral blood flow
Chains
Collagen
Collagen (type I)
Collagen - adverse effects
Collagen - pharmacology
Disease Models, Animal
Genetic modification
Glycoprotein VI
Glycoproteins
Hemostasis
Hemostatics
Immunoglobulins
Immunology
Integrin alpha2beta1 - genetics
Integrin alpha2beta1 - metabolism
Ischemia
Medicine
Medicine and Health Sciences
Mice
Mice, Knockout
Mutation
Occlusion
Pathology
Phosphorylation
Phosphotyrosine
Platelet Activation - drug effects
Platelet Activation - genetics
Platelet Membrane Glycoproteins - genetics
Platelet Membrane Glycoproteins - metabolism
Platelets
Proteins
Rats
Receptor mechanisms
Receptors
Receptors, IgG - genetics
Receptors, IgG - metabolism
Research and Analysis Methods
Signaling
Thromboembolism
Thrombosis
Thrombosis - chemically induced
Thrombosis - genetics
Thrombosis - metabolism
Tyrosine
title α2β1 integrin, GPVI receptor, and common FcRγ chain on mouse platelets mediate distinct responses to collagen in models of thrombosis
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