Abstract:
:BMP2 stimulates bone formation and signals preferably through BMP receptor (BMPR) 1A, whereas GDF5 is a cartilage inducer and signals preferably through BMPR1B. Consequently, BMPR1A and BMPR1B are believed to be involved in bone and cartilage formation, respectively. However, their function is not yet fully clarified. In this study, GDF5 mutants with a decreased affinity for BMPR1A were generated. These mutants, and wild-type GDF5 and BMP2, were tested for their ability to induce dimerization of BMPR1A or BMPR1B with BMPR2, and for their chondrogenic, hypertrophic and osteogenic properties in chondrocytes, in the multipotent mesenchymal precursor cell line C3H10T1/2 and the human osteosarcoma cell line Saos-2. Mutants with the lowest potency for inducing BMPR1A-BMPR2 dimerization exhibited minimal chondrogenic and osteogenic activities, indicating that BMPR1A is necessary for chondrogenic and osteogenic differentiation. BMP2, GDF5 and the GDF5 R399E mutant stimulated expression of chondrogenic and hypertrophy markers in C3H10T1/2 cells and chondrocytes. However, GDF5 R399E, which induces the dimerization of BMPR1B and BMPR2 more potently than GDF5 or BMP2, displayed reduced hypertrophic activity. Therefore, we postulate that stronger BMPR1B signaling, compared to BMPR1A signaling, prevents chondrocyte hypertrophy and acts as a cartilage stabilizer during joint morphogenesis.This article has an associated First Person interview with the first author of the paper.
journal_name
J Cell Scijournal_title
Journal of cell scienceauthors
Mang T,Kleinschmidt-Doerr K,Ploeger F,Schoenemann A,Lindemann S,Gigout Adoi
10.1242/jcs.246934subject
Has Abstractpub_date
2020-08-21 00:00:00issue
16eissn
0021-9533issn
1477-9137pii
jcs.246934journal_volume
133pub_type
杂志文章abstract::Perilipin family proteins (Plins) coat the surface of intracellular neutral lipid storage droplets in various cell types. Studies across diverse species demonstrate that Plins regulate lipid storage metabolism through recruitment of lipases and other regulatory proteins to lipid droplet surfaces. Mammalian genomes hav...
journal_title:Journal of cell science
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abstract::Planar cell polarity (PCP) has been demonstrated in the epithelium of organisms from flies to humans. Recent research has revealed that the planar organization of cells requires a conserved set of genes, known as the PCP genes. Tbe PCP proteins Frizzled (Fz) and Dishevelled (Dsh) function as key players in PCP signall...
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abstract::Start is the main decision point in the eukaryotic cell cycle at which cells commit to a new round of cell division. It involves the irreversible activation of a transcriptional programme through the inactivation of Start transcriptional repressors: the retinoblastoma family in mammals, or Whi5 and its recently identi...
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doi:10.1242/jcs.004846
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abstract::MicroRNAs (miRNAs) play important roles in the development of skeletal muscle. In our previous study, expression of miR-195 and miR-497 were shown to be upregulated during muscle development in pigs. In this study, we investigated the roles of these two miRNAs in myogenesis and analyzed their transcriptional regulatio...
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abstract::The ribonucleoprotein enzyme RNase P catalyzes the 5' processing of pre-transfer RNA, and has also recently been implicated in pre-ribosomal RNA processing. In the present investigation, in situ hybridization revealed that RNase P RNA is present throughout the nucleus of mammalian cells. However, rhodamine-labeled hum...
journal_title:Journal of cell science
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更新日期:1997-04-01 00:00:00
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doi:10.1242/jcs.02674
更新日期:2005-12-01 00:00:00
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doi:
更新日期:1999-08-01 00:00:00
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journal_title:Journal of cell science
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doi:
更新日期:1992-08-01 00:00:00
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journal_title:Journal of cell science
pub_type: 杂志文章
doi:10.1242/jcs.120477
更新日期:2013-08-15 00:00:00
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journal_title:Journal of cell science
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更新日期:1994-11-01 00:00:00
abstract::Accumulation of adipocytes and collagen type-I-producing cells (fibrosis) is observed in muscular dystrophies. The origin of these cells had been largely unknown, but recently we identified mesenchymal progenitors positive for platelet-derived growth factor receptor alpha (PDGFRα) as the origin of adipocytes in skelet...
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更新日期:2011-11-01 00:00:00
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journal_title:Journal of cell science
pub_type: 杂志文章
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更新日期:2010-08-01 00:00:00
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journal_title:Journal of cell science
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