2026-05-22T00:32:54Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/119192024-09-27T09:05:44Zcom_20.500.12105_19604com_20.500.12105_2051col_20.500.12105_19605
Repisalud
author
Zaragoza, Carlos
author
Lopez-Rivera, Esther
author
Garcia-Rama, Concepcion
author
Saura, Marta
author
Martinez-Ruiz, Antonio
author
Lizarbe, Tania R
author
Martín-de-Lara, Fernando
author
Lamas, Santiago
funder
Ministerio de Ciencia y Tecnología (España)
funder
Ministerio de Educación y Ciencia (España)
funder
Unión Europea. Fondo Europeo de Desarrollo Regional (FEDER/ERDF)
funder
Comunidad de Madrid (España)
funder
Sociedad Española de Nefrología
funder
Centro de Investigación Biomédica en Red - CIBERCV (Enfermedades Cardiovasculares)
funder
Ministerio de Sanidad y Consumo (España)
2021-02-17T09:02:52Z
2021-02-17T09:02:52Z
2006-05-01
J Cell Sci. 2006; 119(Pt 9):1896-902
10.1242/jcs.02895
0021-9533
Journal of cell science
16636074
http://hdl.handle.net/20.500.12105/11919
During bone development, osteoblast differentiation requires remodeling of the extracellular matrix. Although underlying mechanisms have not been elucidated, evidence points to the participation of the nitric oxide (NO) and cyclic guanosine 3',5'-monophosphate (cGMP) system. Here, we detected increased matrix metalloproteinase (MMP)-13 mRNA, protein and activity, as well as increased inducible NO synthase (iNOS) and NO production during the differentiation of MC3T3-E1 osteoblasts. Transcriptional activity of the MMP-13 promoter was augmented by NO, 8-bromo-cGMP (8-Br-cGMP), and by a dominant-positive form of protein kinase G (PKG1-alpha). The stimulatory effect on the MMP-13 promoter was partially inhibited by mutation of the osteoblast-specific element 2 (OSE-2) binding site. Core binding factor-1 (Cbfa-1) expression peaked at 7 days of differentiation, and was phosphorylated by PKG in vitro. Cbfa-1 was localized to cell nuclei, and its translocation was inhibited by the iNOS inhibitor 1400W. Immunohistological examination revealed that MMP-13 and Cbfa-1 expression levels are both reduced in 17-day-old embryos of iNOS-deficient mice. Silencing of Cbfa-1 mRNA blocked MMP-13 expression without interfering with endogenous NO production, confirming its role in NO-induced MMP-13 expression by MC3T3-E1 cells. The results described here suggest a mechanism by which NO regulates osteogenesis.
eng
Cbfa-1 mediates nitric oxide regulation of MMP-13 in osteoblasts.
journal article
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Cbfa-1MediatesNitric_2006.pdf
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https://repisalud.isciii.es/bitstreams/09a9caf0-891c-4660-bf75-03712c6b8355/download
File
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text/plain
Cbfa-1MediatesNitric_2006.pdf.txt