Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathway
Receptor activator of NF-κB ligand (RANKL) triggers thedifferentiation of bone marrow-derived monocyte/macrophageprecursor cells (BMMs) of hematopoietic origin into osteoclaststhrough the activation of mitogen-activated protein (MAP) kinasesand transcription factors. Recently, reactive oxygen specie...
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Korean Society for Biochemistry and Molecular Biology
2012-03-01
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doaj-5e3aa18ecbf44fb89188b82b023b7cf92020-11-24T21:08:16ZengKorean Society for Biochemistry and Molecular BiologyBMB Reports1976-66961976-670X2012-03-01453171176http://dx.doi.org/10.5483/BMBRep.2012.45.3.171Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathwayJeong-Tae YeonSik-Won ChoiKie-In ParkMin-Kyu ChoiJeong-Joong KimByung-Soo YounMyeung Su LeeJaemin OhReceptor activator of NF-κB ligand (RANKL) triggers thedifferentiation of bone marrow-derived monocyte/macrophageprecursor cells (BMMs) of hematopoietic origin into osteoclaststhrough the activation of mitogen-activated protein (MAP) kinasesand transcription factors. Recently, reactive oxygen species (ROS)and antioxidant enzymes were shown to be closely associated withRANKL-mediated osteoclast differentiation. Although glutaredoxin2(Glrx2) plays a role in cellular redox homeostasis, its role inRANKL-mediated osteoclastogenesis is unclear. We found thatGlrx2 isoform b (Glrx2b) expression is induced during RANKLmediatedosteoclastogenesis. Over-expression of Glrx2b stronglyenhanced RANKL- mediated osteoclastogenesis. In addition,Glrx2b-transduced BMMs enhanced the expression of key transcriptionfactors c-Fos and NFATc1, but pre-treatment withSB203580, a p38-specific inhibitor, completely blocked thisenhancement. Conversely, down-regulation of Glrx2b decreasedRANKL- mediated osteoclastogenesis and the expression of c-Fosand NFATc1 proteins. Also, Glrx2b down-regulation attenuated theRANKL-induced activation of p38. Taken together, these resultssuggest that Glrx2b enhances RANKL-induced osteoclastogenesisvia p38 activation. [BMB reports 2012; 45(3): 171-176]http://bmbreports.org/jbmb/pdf.php?data=MTMxMTA4MTZAcGRmX3JhaW50cmFjZV9sZWV5c0AlNUI0NS0zJTVEMTIwMzI3MTU0Nl8lMjgxNzEtMTc2JTI5Qk1CXzExLTIyNy5wZGY=Glrx2bGlutaredoxin2 isoform bOsteoclastsp38RANKL |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jeong-Tae Yeon Sik-Won Choi Kie-In Park Min-Kyu Choi Jeong-Joong Kim Byung-Soo Youn Myeung Su Lee Jaemin Oh |
spellingShingle |
Jeong-Tae Yeon Sik-Won Choi Kie-In Park Min-Kyu Choi Jeong-Joong Kim Byung-Soo Youn Myeung Su Lee Jaemin Oh Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathway BMB Reports Glrx2b Glutaredoxin2 isoform b Osteoclasts p38 RANKL |
author_facet |
Jeong-Tae Yeon Sik-Won Choi Kie-In Park Min-Kyu Choi Jeong-Joong Kim Byung-Soo Youn Myeung Su Lee Jaemin Oh |
author_sort |
Jeong-Tae Yeon |
title |
Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathway |
title_short |
Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathway |
title_full |
Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathway |
title_fullStr |
Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathway |
title_full_unstemmed |
Glutaredoxin2 isoform b (Glrx2b) promotes RANKL-induced osteoclastogenesis through activation of the p38-MAPK signaling pathway |
title_sort |
glutaredoxin2 isoform b (glrx2b) promotes rankl-induced osteoclastogenesis through activation of the p38-mapk signaling pathway |
publisher |
Korean Society for Biochemistry and Molecular Biology |
series |
BMB Reports |
issn |
1976-6696 1976-670X |
publishDate |
2012-03-01 |
description |
Receptor activator of NF-κB ligand (RANKL) triggers thedifferentiation of bone marrow-derived monocyte/macrophageprecursor cells (BMMs) of hematopoietic origin into osteoclaststhrough the activation of mitogen-activated protein (MAP) kinasesand transcription factors. Recently, reactive oxygen species (ROS)and antioxidant enzymes were shown to be closely associated withRANKL-mediated osteoclast differentiation. Although glutaredoxin2(Glrx2) plays a role in cellular redox homeostasis, its role inRANKL-mediated osteoclastogenesis is unclear. We found thatGlrx2 isoform b (Glrx2b) expression is induced during RANKLmediatedosteoclastogenesis. Over-expression of Glrx2b stronglyenhanced RANKL- mediated osteoclastogenesis. In addition,Glrx2b-transduced BMMs enhanced the expression of key transcriptionfactors c-Fos and NFATc1, but pre-treatment withSB203580, a p38-specific inhibitor, completely blocked thisenhancement. Conversely, down-regulation of Glrx2b decreasedRANKL- mediated osteoclastogenesis and the expression of c-Fosand NFATc1 proteins. Also, Glrx2b down-regulation attenuated theRANKL-induced activation of p38. Taken together, these resultssuggest that Glrx2b enhances RANKL-induced osteoclastogenesisvia p38 activation. [BMB reports 2012; 45(3): 171-176] |
topic |
Glrx2b Glutaredoxin2 isoform b Osteoclasts p38 RANKL |
url |
http://bmbreports.org/jbmb/pdf.php?data=MTMxMTA4MTZAcGRmX3JhaW50cmFjZV9sZWV5c0AlNUI0NS0zJTVEMTIwMzI3MTU0Nl8lMjgxNzEtMTc2JTI5Qk1CXzExLTIyNy5wZGY= |
work_keys_str_mv |
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