Development of myotendinous-like junctions that anchor cardiac valves requires fibromodulin and lumican.
Development of myotendinous-like junctions that anchor cardiac valves requires fibromodulin and lumican.
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DOI:
10.1002/dvdy.24435
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发表时间:
2016-10
期刊:
影响因子:
--
通讯作者:
Kern CB
中科院分区:
文献类型:
--
作者:
Dupuis LE;Doucette L;Rice AK;Lancaster AE;Berger MG;Chakravarti S;Kern CB
There are many patients that exhibit connective tissue related cardiac malformations but do not have mutations in collagen genes. The Small Leucine Rich Proteoglycans (SLRP) fibromodulin (FMOD) and lumican (LUM) bind collagen and regulate fibril assembly in other biological contexts. FMOD deficient mice and double deficient FMOD;LUM mice exhibited anomalies in regions where cardiac valve tissue interdigitates with adjacent muscle for support. Ectopic connective and/or myocardial tissue(s) was associated with the more severe cardiac valve anomalies in FMOD;LUM deficient mice. At postnatal day 0 (P0) there was an increase in the mesenchymal cell number in the regions where valve cusps anchor in FMOD;LUM deficient mice compared to WT. The cardiac valve anomalies correlated with the highest levels of FMOD expression in the heart and also where myotendinous junctions (MTJ) components biglycan, collagen type I alpha 1, and collagen type VI, are also localized. The postnatal assembly of the collagen-rich ECM in regions where cardiac valves anchor, that we have designated ‘myotendinous-like junctions’ (MTLJ) requires the SLRPs FMOD and LUM. Moreover, FMOD and LUM may facilitate mesenchymal cell differentiation in late stages of cardiac valve development.
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影响因子:
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作者:
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DOI:
10.1111/j.1742-4658.2010.07797.x
发表时间:
2010-10
期刊:
The FEBS journal
影响因子:
--
作者:
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通讯作者:
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