Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix
- Autores
- McCarthy, Antonio Desmond; Uemura, Toshimasa; Etcheverry, Susana Beatriz; Cortizo, Ana María
- Año de publicación
- 2004
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The adhesion of osteoblasts to bone extracellular matrix, of which type-I collagen constitutes >85%, can modulate diverse aspects of their physiology such as growth, differentiation and mineralisation. In this study we examined the adhesion of UMR106 rat osteoblast-like cells either to a control (Col) or advanced-glycation-endproduct-modified (AGEs-Col) type I collagen matrix. We investigated the possible role of different integrin receptors in osteoblastic adhesion, by co-incubating these cells either with β-peptide (conserved sequence 113–125 of the β subunit of integrins) or with two other peptides, RGD (Arg-Gly-Asp) and DGEA (Asp-Gly-Glu-Ala), which are recognition sequences for the α-subunits of α1,5β1and α2β1integrins. Collagen glycation inhibited the adhesion of UMR106 osteoblasts to the matrix (40% reduction versus Col,P<0.001). β-Peptide showed a dose- and glycation-dependent inhibitory effect on adhesion, and at a concentration of 100μM decreased the attachment of UMR106 cells to both matrices (42% to Col,P<0.001; and 25% to AGEs-Col,P<0.01). The synthetic peptides RGD (1mM) and DGEA (5mM) inhibited the attachment of UMR106 cells to Col (30 and 20%,P<0.01 andP<0.001, respectively), but not to AGEs-Col. β-Peptide induced an increase in UMR106 cell clumping and a decrease in cellular spreading, while DGEA increased spreading with cellular extensions in multiple directions. These results indicate that both α and β integrin subunits participate in osteoblastic attachment to type-I collagen, probably through the α1,5β1and α2β1integrins. AGEs-modification of type-I collagen impairs the integrin-mediated adhesion of osteoblastic cells to the matrix, and could thus contribute to the pathogenesis of diabetic osteopenia.
Laboratorio de Investigación en Osteopatías y Metabolismo Mineral - Materia
-
Química
Advanced glycation endproducts
Osteoblast
Adhesion
Integrin receptors
Type-I collagen - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/100327
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Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrixMcCarthy, Antonio DesmondUemura, ToshimasaEtcheverry, Susana BeatrizCortizo, Ana MaríaQuímicaAdvanced glycation endproductsOsteoblastAdhesionIntegrin receptorsType-I collagenThe adhesion of osteoblasts to bone extracellular matrix, of which type-I collagen constitutes >85%, can modulate diverse aspects of their physiology such as growth, differentiation and mineralisation. In this study we examined the adhesion of UMR106 rat osteoblast-like cells either to a control (Col) or advanced-glycation-endproduct-modified (AGEs-Col) type I collagen matrix. We investigated the possible role of different integrin receptors in osteoblastic adhesion, by co-incubating these cells either with β-peptide (conserved sequence 113–125 of the β subunit of integrins) or with two other peptides, RGD (Arg-Gly-Asp) and DGEA (Asp-Gly-Glu-Ala), which are recognition sequences for the α-subunits of α1,5β1and α2β1integrins. Collagen glycation inhibited the adhesion of UMR106 osteoblasts to the matrix (40% reduction versus Col,P<0.001). β-Peptide showed a dose- and glycation-dependent inhibitory effect on adhesion, and at a concentration of 100μM decreased the attachment of UMR106 cells to both matrices (42% to Col,P<0.001; and 25% to AGEs-Col,P<0.01). The synthetic peptides RGD (1mM) and DGEA (5mM) inhibited the attachment of UMR106 cells to Col (30 and 20%,P<0.01 andP<0.001, respectively), but not to AGEs-Col. β-Peptide induced an increase in UMR106 cell clumping and a decrease in cellular spreading, while DGEA increased spreading with cellular extensions in multiple directions. These results indicate that both α and β integrin subunits participate in osteoblastic attachment to type-I collagen, probably through the α1,5β1and α2β1integrins. AGEs-modification of type-I collagen impairs the integrin-mediated adhesion of osteoblastic cells to the matrix, and could thus contribute to the pathogenesis of diabetic osteopenia.Laboratorio de Investigación en Osteopatías y Metabolismo Mineral2004info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf840-848http://sedici.unlp.edu.ar/handle/10915/100327enginfo:eu-repo/semantics/altIdentifier/issn/1357-2725info:eu-repo/semantics/altIdentifier/hdl/11746/4897info:eu-repo/semantics/altIdentifier/doi/10.1016/j.biocel.2003.09.006info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:13:43Zoai:sedici.unlp.edu.ar:10915/100327Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:13:44.099SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix |
title |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix |
spellingShingle |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix McCarthy, Antonio Desmond Química Advanced glycation endproducts Osteoblast Adhesion Integrin receptors Type-I collagen |
title_short |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix |
title_full |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix |
title_fullStr |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix |
title_full_unstemmed |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix |
title_sort |
Advanced glycation endproducts interfere with integrin-mediated osteoblastic attachment to a type-I collagen matrix |
dc.creator.none.fl_str_mv |
McCarthy, Antonio Desmond Uemura, Toshimasa Etcheverry, Susana Beatriz Cortizo, Ana María |
author |
McCarthy, Antonio Desmond |
author_facet |
McCarthy, Antonio Desmond Uemura, Toshimasa Etcheverry, Susana Beatriz Cortizo, Ana María |
author_role |
author |
author2 |
Uemura, Toshimasa Etcheverry, Susana Beatriz Cortizo, Ana María |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Química Advanced glycation endproducts Osteoblast Adhesion Integrin receptors Type-I collagen |
topic |
Química Advanced glycation endproducts Osteoblast Adhesion Integrin receptors Type-I collagen |
dc.description.none.fl_txt_mv |
The adhesion of osteoblasts to bone extracellular matrix, of which type-I collagen constitutes >85%, can modulate diverse aspects of their physiology such as growth, differentiation and mineralisation. In this study we examined the adhesion of UMR106 rat osteoblast-like cells either to a control (Col) or advanced-glycation-endproduct-modified (AGEs-Col) type I collagen matrix. We investigated the possible role of different integrin receptors in osteoblastic adhesion, by co-incubating these cells either with β-peptide (conserved sequence 113–125 of the β subunit of integrins) or with two other peptides, RGD (Arg-Gly-Asp) and DGEA (Asp-Gly-Glu-Ala), which are recognition sequences for the α-subunits of α1,5β1and α2β1integrins. Collagen glycation inhibited the adhesion of UMR106 osteoblasts to the matrix (40% reduction versus Col,P<0.001). β-Peptide showed a dose- and glycation-dependent inhibitory effect on adhesion, and at a concentration of 100μM decreased the attachment of UMR106 cells to both matrices (42% to Col,P<0.001; and 25% to AGEs-Col,P<0.01). The synthetic peptides RGD (1mM) and DGEA (5mM) inhibited the attachment of UMR106 cells to Col (30 and 20%,P<0.01 andP<0.001, respectively), but not to AGEs-Col. β-Peptide induced an increase in UMR106 cell clumping and a decrease in cellular spreading, while DGEA increased spreading with cellular extensions in multiple directions. These results indicate that both α and β integrin subunits participate in osteoblastic attachment to type-I collagen, probably through the α1,5β1and α2β1integrins. AGEs-modification of type-I collagen impairs the integrin-mediated adhesion of osteoblastic cells to the matrix, and could thus contribute to the pathogenesis of diabetic osteopenia. Laboratorio de Investigación en Osteopatías y Metabolismo Mineral |
description |
The adhesion of osteoblasts to bone extracellular matrix, of which type-I collagen constitutes >85%, can modulate diverse aspects of their physiology such as growth, differentiation and mineralisation. In this study we examined the adhesion of UMR106 rat osteoblast-like cells either to a control (Col) or advanced-glycation-endproduct-modified (AGEs-Col) type I collagen matrix. We investigated the possible role of different integrin receptors in osteoblastic adhesion, by co-incubating these cells either with β-peptide (conserved sequence 113–125 of the β subunit of integrins) or with two other peptides, RGD (Arg-Gly-Asp) and DGEA (Asp-Gly-Glu-Ala), which are recognition sequences for the α-subunits of α1,5β1and α2β1integrins. Collagen glycation inhibited the adhesion of UMR106 osteoblasts to the matrix (40% reduction versus Col,P<0.001). β-Peptide showed a dose- and glycation-dependent inhibitory effect on adhesion, and at a concentration of 100μM decreased the attachment of UMR106 cells to both matrices (42% to Col,P<0.001; and 25% to AGEs-Col,P<0.01). The synthetic peptides RGD (1mM) and DGEA (5mM) inhibited the attachment of UMR106 cells to Col (30 and 20%,P<0.01 andP<0.001, respectively), but not to AGEs-Col. β-Peptide induced an increase in UMR106 cell clumping and a decrease in cellular spreading, while DGEA increased spreading with cellular extensions in multiple directions. These results indicate that both α and β integrin subunits participate in osteoblastic attachment to type-I collagen, probably through the α1,5β1and α2β1integrins. AGEs-modification of type-I collagen impairs the integrin-mediated adhesion of osteoblastic cells to the matrix, and could thus contribute to the pathogenesis of diabetic osteopenia. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/100327 |
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dc.language.none.fl_str_mv |
eng |
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eng |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf 840-848 |
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