首页> 外文期刊>Fungal Genetics and Biology >HdaA, a class 2 histone deacetylase of Aspergillus fumigatus, affects germination and secondary metabolite production
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HdaA, a class 2 histone deacetylase of Aspergillus fumigatus, affects germination and secondary metabolite production

机译:HdaA,烟曲霉的2类组蛋白脱乙酰基酶,影响发芽和次级代谢产物的产生

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Histone deacetylases (HDACs) play an important role in regulation of gene expression through histone modifications. Here we show that the Aspergillus fumigatus HDAC HdaA is involved in regulation of secondary metabolite production and is required for normal germination and vegetative growth. Deletion of the hdaA gene increased the production of several secondary metabolites but decreased production of gliotoxin whereas over-expression hdaA increased production of gliotoxin. RT-PCR analysis of 14 nonribosomal peptide synthases indicated HdaA regulation of up to nine of them. A mammalian cell toxicity assay indicated increased activity in the over-expression strain. Neither mutant affected virulence of the fungus as measured by macrophage engulfment of conidia or virulence in a neutropenic mouse model
机译:组蛋白脱乙酰基酶(HDAC)通过组蛋白修饰在基因表达的调节中起重要作用。在这里,我们显示烟曲霉HDAC HdaA参与次级代谢产物的调节,是正常发芽和营养生长所需的。 hdaA基因的删除增加了几种次生代谢产物的产生,但减少了胶质毒素的产生,而过表达的hdaA则增加了胶质毒素的产生。 14种非核糖体肽合酶的RT-PCR分析表明,HdaA调节了多达9种。哺乳动物细胞毒性测定表明在过表达菌株中活性增加。通过巨噬细胞分生孢子吞噬或在中性粒细胞减少的小鼠模型中的毒力,突变体均不会影响真菌的毒力

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