Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide
- Autores
- Zhai, Zili; Gomez-Mejiba, Sandra Esther; Gimenez, Maria Sofia; Deterding, Leesa J.; Tomer, Kenneth B.; Mason, Ronald P.; Ramirez, Dario; Ramirez, Dario
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The free-radical-operated mechanism of death of activated macrophages at sites of inflammation is unclear, but it is important to define it in order to find targets to prevent further tissue dysfunction. A well-defined model of macrophage activation at sites of inflammation is the treatment of RAW 264.7 cells with lipopolysaccharide (LPS), with the resulting production of reactive oxygen species (ROS). ROS and other free radicals can be trapped with the nitrone spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO), a cell-permeable probe with antioxidant properties, which thus interferes with free-radical-operated oxidation processes. Here we have used immuno-spin trapping to investigate the role of free-radical-operated protein oxidation in LPS-induced cytotoxicity in macrophages. Treatment of RAW 264.7 cells with LPS resulted in increased ROS production, oxidation of proteins, cell morphological changes and cytotoxicity. DMPO was found to trap protein radicals to form protein-DMPO nitrone adducts, to reduce protein carbonyls, and to block LPS-induced cell death. N-Acetylcysteine (a source of reduced glutathione), diphenyleneiodonium (an inhibitor of NADPH oxidase), and 2,2´-dipyridyl (a chelator of Fe(2+)) prevented LPS-induced oxidative stress and cell death and reduced DMPO-nitrone adduct formation, suggesting a critical role of ROS, metals, and protein-radical formation in LPS-induced cell cytotoxicity. We also determined the subcellular localization of protein-DMPO nitrone adducts and identified some candidate proteins for DMPO attachment by LC-MS/MS. The LC-MS/MS data are consistent with glyceraldehyde-3-phosphate dehydrogenase, one of the most abundant, sensitive, and ubiquitous proteins in the cell, becoming labeled with DMPO when the cell is primed with LPS. This information will help find strategies to treat inflammation-associated tissue dysfunction by focusing on preventing free radical-operated proteotoxic stress and death of macrophages.
Fil: Zhai, Zili. University of Chicago; Estados Unidos
Fil: Gomez-Mejiba, Sandra Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina
Fil: Gimenez, Maria Sofia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina
Fil: Deterding, Leesa J.. National Institutes of Health; Estados Unidos
Fil: Tomer, Kenneth B.. National Institutes of Health; Estados Unidos
Fil: Mason, Ronald P.. National Institutes of Health; Estados Unidos
Fil: Ramirez, Dario. Oklahoma State University; Estados Unidos
Fil: Ramirez, Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina - Materia
-
ANTIOXIDANT
LIPOPOLYSACCHARIDE
MACROPHAGE
PROTEIN OXIDATION
REACTIVE OXYGEN SPECIES
SPIN TRAPPING - 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:11336/148323
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Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharideZhai, ZiliGomez-Mejiba, Sandra EstherGimenez, Maria SofiaDeterding, Leesa J.Tomer, Kenneth B.Mason, Ronald P.Ramirez, DarioRamirez, DarioANTIOXIDANTLIPOPOLYSACCHARIDEMACROPHAGEPROTEIN OXIDATIONREACTIVE OXYGEN SPECIESSPIN TRAPPINGhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The free-radical-operated mechanism of death of activated macrophages at sites of inflammation is unclear, but it is important to define it in order to find targets to prevent further tissue dysfunction. A well-defined model of macrophage activation at sites of inflammation is the treatment of RAW 264.7 cells with lipopolysaccharide (LPS), with the resulting production of reactive oxygen species (ROS). ROS and other free radicals can be trapped with the nitrone spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO), a cell-permeable probe with antioxidant properties, which thus interferes with free-radical-operated oxidation processes. Here we have used immuno-spin trapping to investigate the role of free-radical-operated protein oxidation in LPS-induced cytotoxicity in macrophages. Treatment of RAW 264.7 cells with LPS resulted in increased ROS production, oxidation of proteins, cell morphological changes and cytotoxicity. DMPO was found to trap protein radicals to form protein-DMPO nitrone adducts, to reduce protein carbonyls, and to block LPS-induced cell death. N-Acetylcysteine (a source of reduced glutathione), diphenyleneiodonium (an inhibitor of NADPH oxidase), and 2,2´-dipyridyl (a chelator of Fe(2+)) prevented LPS-induced oxidative stress and cell death and reduced DMPO-nitrone adduct formation, suggesting a critical role of ROS, metals, and protein-radical formation in LPS-induced cell cytotoxicity. We also determined the subcellular localization of protein-DMPO nitrone adducts and identified some candidate proteins for DMPO attachment by LC-MS/MS. The LC-MS/MS data are consistent with glyceraldehyde-3-phosphate dehydrogenase, one of the most abundant, sensitive, and ubiquitous proteins in the cell, becoming labeled with DMPO when the cell is primed with LPS. This information will help find strategies to treat inflammation-associated tissue dysfunction by focusing on preventing free radical-operated proteotoxic stress and death of macrophages.Fil: Zhai, Zili. University of Chicago; Estados UnidosFil: Gomez-Mejiba, Sandra Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; ArgentinaFil: Gimenez, Maria Sofia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; ArgentinaFil: Deterding, Leesa J.. National Institutes of Health; Estados UnidosFil: Tomer, Kenneth B.. National Institutes of Health; Estados UnidosFil: Mason, Ronald P.. National Institutes of Health; Estados UnidosFil: Ramirez, Dario. Oklahoma State University; Estados UnidosFil: Ramirez, Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; ArgentinaElsevier Science Inc.2012-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/148323Zhai, Zili; Gomez-Mejiba, Sandra Esther; Gimenez, Maria Sofia; Deterding, Leesa J.; Tomer, Kenneth B.; et al.; Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide; Elsevier Science Inc.; Free Radical Biology and Medicine; 53; 1; 7-2012; 172-1810891-5849CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S089158491200233Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.freeradbiomed.2012.04.023info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4078023/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:51Zoai:ri.conicet.gov.ar:11336/148323instacron: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 10:16:52.225CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide |
title |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide |
spellingShingle |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide Zhai, Zili ANTIOXIDANT LIPOPOLYSACCHARIDE MACROPHAGE PROTEIN OXIDATION REACTIVE OXYGEN SPECIES SPIN TRAPPING |
title_short |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide |
title_full |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide |
title_fullStr |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide |
title_full_unstemmed |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide |
title_sort |
Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide |
dc.creator.none.fl_str_mv |
Zhai, Zili Gomez-Mejiba, Sandra Esther Gimenez, Maria Sofia Deterding, Leesa J. Tomer, Kenneth B. Mason, Ronald P. Ramirez, Dario Ramirez, Dario |
author |
Zhai, Zili |
author_facet |
Zhai, Zili Gomez-Mejiba, Sandra Esther Gimenez, Maria Sofia Deterding, Leesa J. Tomer, Kenneth B. Mason, Ronald P. Ramirez, Dario |
author_role |
author |
author2 |
Gomez-Mejiba, Sandra Esther Gimenez, Maria Sofia Deterding, Leesa J. Tomer, Kenneth B. Mason, Ronald P. Ramirez, Dario |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
ANTIOXIDANT LIPOPOLYSACCHARIDE MACROPHAGE PROTEIN OXIDATION REACTIVE OXYGEN SPECIES SPIN TRAPPING |
topic |
ANTIOXIDANT LIPOPOLYSACCHARIDE MACROPHAGE PROTEIN OXIDATION REACTIVE OXYGEN SPECIES SPIN TRAPPING |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The free-radical-operated mechanism of death of activated macrophages at sites of inflammation is unclear, but it is important to define it in order to find targets to prevent further tissue dysfunction. A well-defined model of macrophage activation at sites of inflammation is the treatment of RAW 264.7 cells with lipopolysaccharide (LPS), with the resulting production of reactive oxygen species (ROS). ROS and other free radicals can be trapped with the nitrone spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO), a cell-permeable probe with antioxidant properties, which thus interferes with free-radical-operated oxidation processes. Here we have used immuno-spin trapping to investigate the role of free-radical-operated protein oxidation in LPS-induced cytotoxicity in macrophages. Treatment of RAW 264.7 cells with LPS resulted in increased ROS production, oxidation of proteins, cell morphological changes and cytotoxicity. DMPO was found to trap protein radicals to form protein-DMPO nitrone adducts, to reduce protein carbonyls, and to block LPS-induced cell death. N-Acetylcysteine (a source of reduced glutathione), diphenyleneiodonium (an inhibitor of NADPH oxidase), and 2,2´-dipyridyl (a chelator of Fe(2+)) prevented LPS-induced oxidative stress and cell death and reduced DMPO-nitrone adduct formation, suggesting a critical role of ROS, metals, and protein-radical formation in LPS-induced cell cytotoxicity. We also determined the subcellular localization of protein-DMPO nitrone adducts and identified some candidate proteins for DMPO attachment by LC-MS/MS. The LC-MS/MS data are consistent with glyceraldehyde-3-phosphate dehydrogenase, one of the most abundant, sensitive, and ubiquitous proteins in the cell, becoming labeled with DMPO when the cell is primed with LPS. This information will help find strategies to treat inflammation-associated tissue dysfunction by focusing on preventing free radical-operated proteotoxic stress and death of macrophages. Fil: Zhai, Zili. University of Chicago; Estados Unidos Fil: Gomez-Mejiba, Sandra Esther. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina Fil: Gimenez, Maria Sofia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina Fil: Deterding, Leesa J.. National Institutes of Health; Estados Unidos Fil: Tomer, Kenneth B.. National Institutes of Health; Estados Unidos Fil: Mason, Ronald P.. National Institutes of Health; Estados Unidos Fil: Ramirez, Dario. Oklahoma State University; Estados Unidos Fil: Ramirez, Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina |
description |
The free-radical-operated mechanism of death of activated macrophages at sites of inflammation is unclear, but it is important to define it in order to find targets to prevent further tissue dysfunction. A well-defined model of macrophage activation at sites of inflammation is the treatment of RAW 264.7 cells with lipopolysaccharide (LPS), with the resulting production of reactive oxygen species (ROS). ROS and other free radicals can be trapped with the nitrone spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO), a cell-permeable probe with antioxidant properties, which thus interferes with free-radical-operated oxidation processes. Here we have used immuno-spin trapping to investigate the role of free-radical-operated protein oxidation in LPS-induced cytotoxicity in macrophages. Treatment of RAW 264.7 cells with LPS resulted in increased ROS production, oxidation of proteins, cell morphological changes and cytotoxicity. DMPO was found to trap protein radicals to form protein-DMPO nitrone adducts, to reduce protein carbonyls, and to block LPS-induced cell death. N-Acetylcysteine (a source of reduced glutathione), diphenyleneiodonium (an inhibitor of NADPH oxidase), and 2,2´-dipyridyl (a chelator of Fe(2+)) prevented LPS-induced oxidative stress and cell death and reduced DMPO-nitrone adduct formation, suggesting a critical role of ROS, metals, and protein-radical formation in LPS-induced cell cytotoxicity. We also determined the subcellular localization of protein-DMPO nitrone adducts and identified some candidate proteins for DMPO attachment by LC-MS/MS. The LC-MS/MS data are consistent with glyceraldehyde-3-phosphate dehydrogenase, one of the most abundant, sensitive, and ubiquitous proteins in the cell, becoming labeled with DMPO when the cell is primed with LPS. This information will help find strategies to treat inflammation-associated tissue dysfunction by focusing on preventing free radical-operated proteotoxic stress and death of macrophages. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-07 |
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/11336/148323 Zhai, Zili; Gomez-Mejiba, Sandra Esther; Gimenez, Maria Sofia; Deterding, Leesa J.; Tomer, Kenneth B.; et al.; Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide; Elsevier Science Inc.; Free Radical Biology and Medicine; 53; 1; 7-2012; 172-181 0891-5849 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/148323 |
identifier_str_mv |
Zhai, Zili; Gomez-Mejiba, Sandra Esther; Gimenez, Maria Sofia; Deterding, Leesa J.; Tomer, Kenneth B.; et al.; Free radical-operated proteotoxic stress in macrophages primed with lipopolysaccharide; Elsevier Science Inc.; Free Radical Biology and Medicine; 53; 1; 7-2012; 172-181 0891-5849 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S089158491200233X info:eu-repo/semantics/altIdentifier/doi/10.1016/j.freeradbiomed.2012.04.023 info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4078023/ |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science Inc. |
publisher.none.fl_str_mv |
Elsevier Science 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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score |
13.070432 |