NF-κB inhibitors impair platelet activation responses
- Autores
- Malaver Marín, Elisa; Romaniuk, María Albertina; D'Atri, Lina Paola; Pozner, Roberto Gabriel; Negrotto, Soledad; Benzadón, R.; Schattner, Mirta Ana
- Año de publicación
- 2009
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Background: Although platelets are anucleated cells, they express several transcription factors that exert non-genomic functions, including the positive and negative regulation of platelet activation. NF-κB is a major transcriptional regulator of genes involved in survival, proliferation and inflammation. Objective: Because platelets play a critical role not only in hemostasis, but also in inflammation and tumor progression, we evaluated the role of NF-κB in platelet physiology. Results: Immunofluorescence, Western blotting and ELISA studies revealed that platelets express IκBα and NF-κB, and that stimulation with thrombin triggers IκBα phosphorylation and degradation and the binding of platelet NF-κB p65 subunit to synthetic olignoucleotides containing the consensus sequence for NF-κB. Two specific unrelated inhibitors of NF-κB activation, BAY 11-7082 and Ro 106-9920, reduced PAC-1 and fibrinogen binding to integrin αIIbβ3 and restricted platelet spreading on immobilized fibrinogen. Both inhibitors impaired aggregation mediated by ADP, epinephrine, collagen or thrombin, but not arachidonic acid. ATP release, TXB2 formation, P-selectin expression, ERK phosphorylation and cPLA2 activity stimulated by thrombin were reduced in BAY 11-7082- or Ro 106-9920-treated platelets. Although bleeding time was not affected, ADP-induced platelet aggregation was impaired in mice treated with BAY 11-7082. Conclusions: Our results suggest that NF-κB may be a novel mediator of platelet responses. The blockade of platelet function by NF-κB inhibitors might be relevant in those clinical situations where these drugs are being considered for anti-tumor and/or anti-inflammatory therapy. © 2009 International Society on Thrombosis and Haemostasis.
Fil: Malaver Marín, Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
Fil: Romaniuk, María Albertina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
Fil: D'Atri, Lina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
Fil: Pozner, Roberto Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
Fil: Negrotto, Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina
Fil: Benzadón, R.. Centro de Educación Medica E Invest.clinicas; Argentina
Fil: Schattner, Mirta Ana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina - Materia
-
ΑIibΒ3
Cpla2
Nf-ΚB
Platelets
Txb2 - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/54503
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NF-κB inhibitors impair platelet activation responsesMalaver Marín, ElisaRomaniuk, María AlbertinaD'Atri, Lina PaolaPozner, Roberto GabrielNegrotto, SoledadBenzadón, R.Schattner, Mirta AnaΑIibΒ3Cpla2Nf-ΚBPlateletsTxb2https://purl.org/becyt/ford/3.2https://purl.org/becyt/ford/3Background: Although platelets are anucleated cells, they express several transcription factors that exert non-genomic functions, including the positive and negative regulation of platelet activation. NF-κB is a major transcriptional regulator of genes involved in survival, proliferation and inflammation. Objective: Because platelets play a critical role not only in hemostasis, but also in inflammation and tumor progression, we evaluated the role of NF-κB in platelet physiology. Results: Immunofluorescence, Western blotting and ELISA studies revealed that platelets express IκBα and NF-κB, and that stimulation with thrombin triggers IκBα phosphorylation and degradation and the binding of platelet NF-κB p65 subunit to synthetic olignoucleotides containing the consensus sequence for NF-κB. Two specific unrelated inhibitors of NF-κB activation, BAY 11-7082 and Ro 106-9920, reduced PAC-1 and fibrinogen binding to integrin αIIbβ3 and restricted platelet spreading on immobilized fibrinogen. Both inhibitors impaired aggregation mediated by ADP, epinephrine, collagen or thrombin, but not arachidonic acid. ATP release, TXB2 formation, P-selectin expression, ERK phosphorylation and cPLA2 activity stimulated by thrombin were reduced in BAY 11-7082- or Ro 106-9920-treated platelets. Although bleeding time was not affected, ADP-induced platelet aggregation was impaired in mice treated with BAY 11-7082. Conclusions: Our results suggest that NF-κB may be a novel mediator of platelet responses. The blockade of platelet function by NF-κB inhibitors might be relevant in those clinical situations where these drugs are being considered for anti-tumor and/or anti-inflammatory therapy. © 2009 International Society on Thrombosis and Haemostasis.Fil: Malaver Marín, Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaFil: Romaniuk, María Albertina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaFil: D'Atri, Lina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaFil: Pozner, Roberto Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaFil: Negrotto, Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaFil: Benzadón, R.. Centro de Educación Medica E Invest.clinicas; ArgentinaFil: Schattner, Mirta Ana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; ArgentinaWiley Blackwell Publishing, Inc2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54503Malaver Marín, Elisa; Romaniuk, María Albertina; D'Atri, Lina Paola; Pozner, Roberto Gabriel; Negrotto, Soledad; et al.; NF-κB inhibitors impair platelet activation responses; Wiley Blackwell Publishing, Inc; Journal of Thrombosis and Haemostasis; 7; 8; 12-2009; 1333-13431538-7933CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1538-7836.2009.03492.xinfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1538-7836.2009.03492.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:21Zoai:ri.conicet.gov.ar:11336/54503instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:43:21.805CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
NF-κB inhibitors impair platelet activation responses |
title |
NF-κB inhibitors impair platelet activation responses |
spellingShingle |
NF-κB inhibitors impair platelet activation responses Malaver Marín, Elisa ΑIibΒ3 Cpla2 Nf-ΚB Platelets Txb2 |
title_short |
NF-κB inhibitors impair platelet activation responses |
title_full |
NF-κB inhibitors impair platelet activation responses |
title_fullStr |
NF-κB inhibitors impair platelet activation responses |
title_full_unstemmed |
NF-κB inhibitors impair platelet activation responses |
title_sort |
NF-κB inhibitors impair platelet activation responses |
dc.creator.none.fl_str_mv |
Malaver Marín, Elisa Romaniuk, María Albertina D'Atri, Lina Paola Pozner, Roberto Gabriel Negrotto, Soledad Benzadón, R. Schattner, Mirta Ana |
author |
Malaver Marín, Elisa |
author_facet |
Malaver Marín, Elisa Romaniuk, María Albertina D'Atri, Lina Paola Pozner, Roberto Gabriel Negrotto, Soledad Benzadón, R. Schattner, Mirta Ana |
author_role |
author |
author2 |
Romaniuk, María Albertina D'Atri, Lina Paola Pozner, Roberto Gabriel Negrotto, Soledad Benzadón, R. Schattner, Mirta Ana |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
ΑIibΒ3 Cpla2 Nf-ΚB Platelets Txb2 |
topic |
ΑIibΒ3 Cpla2 Nf-ΚB Platelets Txb2 |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.2 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Background: Although platelets are anucleated cells, they express several transcription factors that exert non-genomic functions, including the positive and negative regulation of platelet activation. NF-κB is a major transcriptional regulator of genes involved in survival, proliferation and inflammation. Objective: Because platelets play a critical role not only in hemostasis, but also in inflammation and tumor progression, we evaluated the role of NF-κB in platelet physiology. Results: Immunofluorescence, Western blotting and ELISA studies revealed that platelets express IκBα and NF-κB, and that stimulation with thrombin triggers IκBα phosphorylation and degradation and the binding of platelet NF-κB p65 subunit to synthetic olignoucleotides containing the consensus sequence for NF-κB. Two specific unrelated inhibitors of NF-κB activation, BAY 11-7082 and Ro 106-9920, reduced PAC-1 and fibrinogen binding to integrin αIIbβ3 and restricted platelet spreading on immobilized fibrinogen. Both inhibitors impaired aggregation mediated by ADP, epinephrine, collagen or thrombin, but not arachidonic acid. ATP release, TXB2 formation, P-selectin expression, ERK phosphorylation and cPLA2 activity stimulated by thrombin were reduced in BAY 11-7082- or Ro 106-9920-treated platelets. Although bleeding time was not affected, ADP-induced platelet aggregation was impaired in mice treated with BAY 11-7082. Conclusions: Our results suggest that NF-κB may be a novel mediator of platelet responses. The blockade of platelet function by NF-κB inhibitors might be relevant in those clinical situations where these drugs are being considered for anti-tumor and/or anti-inflammatory therapy. © 2009 International Society on Thrombosis and Haemostasis. Fil: Malaver Marín, Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina Fil: Romaniuk, María Albertina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina Fil: D'Atri, Lina Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina Fil: Pozner, Roberto Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina Fil: Negrotto, Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina Fil: Benzadón, R.. Centro de Educación Medica E Invest.clinicas; Argentina Fil: Schattner, Mirta Ana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Academia Nacional de Medicina de Buenos Aires. Instituto de Investigaciones Hematológicas "Mariano R. Castex"; Argentina |
description |
Background: Although platelets are anucleated cells, they express several transcription factors that exert non-genomic functions, including the positive and negative regulation of platelet activation. NF-κB is a major transcriptional regulator of genes involved in survival, proliferation and inflammation. Objective: Because platelets play a critical role not only in hemostasis, but also in inflammation and tumor progression, we evaluated the role of NF-κB in platelet physiology. Results: Immunofluorescence, Western blotting and ELISA studies revealed that platelets express IκBα and NF-κB, and that stimulation with thrombin triggers IκBα phosphorylation and degradation and the binding of platelet NF-κB p65 subunit to synthetic olignoucleotides containing the consensus sequence for NF-κB. Two specific unrelated inhibitors of NF-κB activation, BAY 11-7082 and Ro 106-9920, reduced PAC-1 and fibrinogen binding to integrin αIIbβ3 and restricted platelet spreading on immobilized fibrinogen. Both inhibitors impaired aggregation mediated by ADP, epinephrine, collagen or thrombin, but not arachidonic acid. ATP release, TXB2 formation, P-selectin expression, ERK phosphorylation and cPLA2 activity stimulated by thrombin were reduced in BAY 11-7082- or Ro 106-9920-treated platelets. Although bleeding time was not affected, ADP-induced platelet aggregation was impaired in mice treated with BAY 11-7082. Conclusions: Our results suggest that NF-κB may be a novel mediator of platelet responses. The blockade of platelet function by NF-κB inhibitors might be relevant in those clinical situations where these drugs are being considered for anti-tumor and/or anti-inflammatory therapy. © 2009 International Society on Thrombosis and Haemostasis. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/54503 Malaver Marín, Elisa; Romaniuk, María Albertina; D'Atri, Lina Paola; Pozner, Roberto Gabriel; Negrotto, Soledad; et al.; NF-κB inhibitors impair platelet activation responses; Wiley Blackwell Publishing, Inc; Journal of Thrombosis and Haemostasis; 7; 8; 12-2009; 1333-1343 1538-7933 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/54503 |
identifier_str_mv |
Malaver Marín, Elisa; Romaniuk, María Albertina; D'Atri, Lina Paola; Pozner, Roberto Gabriel; Negrotto, Soledad; et al.; NF-κB inhibitors impair platelet activation responses; Wiley Blackwell Publishing, Inc; Journal of Thrombosis and Haemostasis; 7; 8; 12-2009; 1333-1343 1538-7933 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1538-7836.2009.03492.x info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1538-7836.2009.03492.x |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614468533747712 |
score |
13.070432 |