Whole-genome analysis of muscle founder cells implicates the chromatin regulator Sin3A in muscle identity.
Whole-genome analysis of muscle founder cells implicates the chromatin regulator Sin3A in muscle identity.
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DOI:
10.1016/j.celrep.2014.07.005
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发表时间:
2014-08-07
期刊:
影响因子:
8.8
通讯作者:
Baylies MK
中科院分区:
文献类型:
--
作者:
Dobi KC;Halfon MS;Baylies MK
Skeletal muscles are formed in numerous shapes and sizes, and this diversity impacts function and disease susceptibility. To understand how muscle diversity is generated, we performed gene expression profiling of two muscle subsets from Drosophila embryos. By comparing the transcriptional profiles of these subsets, we identified a core group of founder cell-enriched genes. We screened mutants for muscle defects and identified novel functions for Sin3A and 10 other transcription and chromatin regulators in the Drosophila embryonic somatic musculature. Sin3A is required for the morphogenesis of a musclesubset, and Sin3A mutants display muscle loss and misattachment. Additionally, misexpression of identity gene transcription factors in Sin3A heterozygous embryos leads to direct transformations of one muscle into another, while overexpression of Sin3A results in the reverse transformation. Our data implicate Sin3A as a keybuffer controlling muscle responsiveness to transcription factors in the formation of muscle identity, thereby generating tissue diversity.
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DOI:
10.1016/j.bbagrm.2009.05.007
发表时间:
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期刊:
Biochimica et biophysica acta
影响因子:
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