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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Chromatin-targeting small molecules cause class-specific transcriptional changes in pancreatic endocrine cells
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Chromatin-targeting small molecules cause class-specific transcriptional changes in pancreatic endocrine cells

机译:靶向染色质的小分子在胰腺内分泌细胞中引起类特异性转录变化

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摘要

Under the instruction of cell-fate-determining, DNA-binding transcription factors, chromatin-modifying enzymes mediate and maintain cell states throughout development in multicellular organisms. Currently, small molecules modulating the activity of several classes of chromatin-modifying enzymes are available, including clinically approved histone deacetylase (HDAC) and DNA methyltransferase (DNMT) inhibitors. We describe the genome-wide expression changes induced by 29 compounds targeting HDACs, DNMTs, histone lysine methyltransferases (HKMTs), and protein arginine methyltransferases (PRMTs) in pancreatic a- and 0-cell lines. HDAC inhibitors regulate several hundred transcripts irrespective of the cell type, with distinct clusters of dissimilar activity for hydroxamic acids and orthoamino anilides. In contrast compounds targeting histone methyltransferases modulate the expression of restricted gene sets in distinct cell types. For example, we find that G9a/GLP methyltransferase inhibitors selectively up-regulate the cholesterol biosynthetic pathway in pancreatic but not liver cells. These data suggest that, despite their conservation across the entire genome and in different cell types, chromatin pathways can be targeted to modulate the expression of selected transcripts.
机译:在细胞命运决定,DNA结合转录因子的指导下,染色质修饰酶介导并维持多细胞生物整个发育过程中的细胞状态。当前,可调节几种类型的染色质修饰酶活性的小分子,包括临床批准的组蛋白脱乙酰基酶(HDAC)和DNA甲基转移酶(DNMT)抑制剂。我们描述了由29种针对HDAC,DNMT,组蛋白赖氨酸甲基转移酶(HKMT)和蛋白质精氨酸甲基转移酶(PRMT)的化合物在胰腺a细胞和0细胞系中诱导的全基因组表达变化。 HDAC抑制剂可调节数百种转录物,而与细胞类型无关,对异羟肟酸和原氨基苯甲酰胺的活性具有明显的不同簇。相反,靶向组蛋白甲基转移酶的化合物可调节不同细胞类型中限制性基因集的表达。例如,我们发现G9a / GLP甲基转移酶抑制剂选择性地上调胰腺而非肝脏细胞中胆固醇的生物合成途径。这些数据表明,尽管它们在整个基因组中和在不同的细胞类型中都保守,但是染色质途径可以靶向调节所选转录物的表达。

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  • 作者单位

    Howard Hughes Medical Institute and Cambridge, MA 02142,Broad Institute of Harvard and MIT, Cambridge, MA 02142,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, A-1090 Vienna, Austria;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Howard Hughes Medical Institute and Cambridge, MA 02142,Broad Institute of Harvard and MIT, Cambridge, MA 02142,Department of Molecular and Cellular Biology and Harvard University, Cambridge, MA 02138;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142,Weill Cornell/Rockefeller/Sloan-Kettering Tri-lnstitutional MD-PhD Program, New York, NY 10065;

    Howard Hughes Medical Institute and Cambridge, MA 02142,Broad Institute of Harvard and MIT, Cambridge, MA 02142,Department of Molecular and Cellular Biology and Harvard University, Cambridge, MA 02138;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Broad Institute of Harvard and MIT, Cambridge, MA 02142;

    Howard Hughes Medical Institute and Cambridge, MA 02142,Broad Institute of Harvard and MIT, Cambridge, MA 02142,Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    histone modification; gene regulation; chemical epigenetics; beta cell biology; cholesterol pathway;

    机译:组蛋白修饰;基因调控;化学表观遗传学β细胞生物学;胆固醇途径;

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