Redundancy in regulation of chondrogenesis in MIA/CD-RAP-deficient mice
Redundancy in regulation of chondrogenesis in MIA/CD-RAP-deficient mice
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MIA/CD-RAP 缺陷小鼠软骨形成调节的冗余
DOI:
10.1016/j.mod.2013.11.001
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发表时间:
2014
影响因子:
2.6
通讯作者:
Bosserhoff AK
中科院分区:
文献类型:
--
作者:
Schmid R;Bosserhoff AK
Recentin vitroanalysis of MIA/CD-RAP-deficient (MIA−/−) mesenchymal stem cells revealed altered chondrogenic differentiation, characterised by enhanced proliferation and delayed differentiation. However, adult MIA−/−mice develop normally and show only ultrastructural defects of the cartilage but no major abnormalities. We therefore focused, in this study, on chondrogenesisin vivoin MIA−/−mouse embryos to reveal potential molecular changes during embryogenesis and possible redundant mechanisms, which explain the almost normal phenotype despite MIA/CD-RAP loss.In situhybridisation analysis revealed larger expression areas of Col2a1 and Sox9 positive, proliferating chondrocytes at day 15.5 and 16.5 of embryogenesis in MIA−/−mice. The initially diminished zone of Col10a1-expressing hypertrophic chondrocytes at day 15.5 was compensated at day 16.5 in MIA−/−embryos. Supported byin vitrostudies using mesenchymal stem cells, we discovered that chondrogenesis in MIA−/−mice is modified by enhanced Sox9, Sox6 and AP-2α expression. Finally, we identified reduced AP1 and CRE activity, analysed by reporter gene- and electrophoretic mobility shift assays, important for redundancy mechanism which rescued delayed hypertrophic differentiation and allows normal development of MIA−/−mice. In summary, as observed in otherknockoutmodels of molecules important for cartilage development and differentiation, viability and functional integrity is reached by remarkable molecular redundancy in MIA/CD-RAPknockoutmice.
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影响因子:
7
作者:
Iwamoto, M;Kitagaki, J;Enomoto-Iwamoto, M
通讯作者:
Enomoto-Iwamoto, M
DOI:
10.1172/jci21252
发表时间:
2004
期刊:
The Journal of clinical investigation.
影响因子:
--
作者:
MacLean,HelenE;Guo,Jun;Knight,MelissaC;Zhang,Pumin;Cobrinik,David;Kronenberg,HenryM
通讯作者:
Kronenberg,HenryM
影响因子:
10.5
作者:
Akiyama, H;Chaboissier, MC;de Crombrugghe, B
通讯作者:
de Crombrugghe, B
DOI:
--
发表时间:
2009
期刊:
The FEBS Journal
影响因子:
--
作者:
Ann;S. Grässel;M. Moser;A. Bosserhoff
通讯作者:
A. Bosserhoff
影响因子:
7
作者:
Lefebvre, V;Behringer, RR;de Crombrugghe, B
通讯作者:
de Crombrugghe, B