The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.
The p38 MAPK pathway is essential for skeletogenesis and bone homeostasis in mice
Open accessAbstract
Nearly every extracellular ligand that has been found to play a role in regulating bone biology acts, at least in part, through MAPK pathways. Nevertheless, much remains to be learned about the contribution of MAPKs to osteoblast biology in vivo. Here we report that the p38 MAPK pathway is required for normal skeletogenesis in mice, as mice with deletion of any of the MAPK pathway member-encoding genes MAPK kinase 3 (Mkk3), Mkk6, p38a, or p38b displayed profoundly reduced bone mass secondary to defective osteoblast differentiation. Among the MAPK kinase kinase (MAP3K) family, we identified TGF-beta-activated kinase 1 (TAK1; also known as MAP3K7) as the critical activator upstream of p38 in osteoblasts. Osteoblast-specific deletion of Tak1 resulted in clavicular hypoplasia and delayed fontanelle fusion, a phenotype similar to the cleidocranial dysplasia observed in humans haploinsufficient for the transcription factor runt-related transcription factor 2 (Runx2). Mechanistic analysis revealed that the TAK1-MKK3/6-p38 MAPK axis phosphorylated Runx2, promoting its association with the coactivator CREB-binding protein (CBP), which was required to regulate osteoblast genetic programs. These findings reveal an in vivo function for p38beta and establish that MAPK signaling is essential for bone formation in vivo. These results also suggest that selective p38beta agonists may represent attractive therapeutic agents to prevent bone loss associated with osteoporosis and aging.
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Cited by
TGF-β and BMP Signaling in Osteoblast Differentiation and Bone Formation
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p38 MAPK Signaling in Osteoblast Differentiation
Rodríguez-Carballo, E., Gámez, B., & Ventura, F. (2016) · Frontiers in Cell and Developmental Biology · doi:10.3389/fcell.2016.00040 · Cited by 316
Metadata
- Authors
- Greenblatt, M. B., Shim, J.-H., Zou, W., Sitara, D., Schweitzer, M., Hu, D., Lotinun, S., Sano, Y., Baron, R., Park, J. M., Arthur, S., Xie, M., Schneider, M. D., Zhai, B., Gygi, S., Davis, R., & Glimcher, L. H.
- Venue
- Journal of Clinical Investigation
- Published
- 2010-07-01
- Volume
- 120
- Issue
- 7
- Pages
- 2457-2473
- ISSN
- 0021-9738 (ISSN-L)
- OpenAlex
- W2106247097
- Cited by
- 414
- References
- 55
- FWCI
- 9.57
- Type
- journal article
- Language
- en
- Open access
- green
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- Greenblatt, M. B., Shim, J.-H., Zou, W., Sitara, D., Schweitzer, M., Hu, D., Lotinun, S., Sano, Y., Baron, R., Park, J. M., Arthur, S., Xie, M., Schneider, M. D., Zhai, B., Gygi, S., Davis, R., & Glimcher, L. H. (2010). The p38 MAPK pathway is essential for skeletogenesis and bone homeostasis in mice. Journal of Clinical Investigation. https://doi.org/10.1172/jci42285
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