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Acetylation of the cell-fate factor dachshund determines p53 binding and signaling modules in breast cancer.

机译:细胞命运因子腊肠犬的乙酰化决定了乳腺癌中的p53结合和信号传导模块。

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摘要

Breast cancer is a leading form of cancer in the world. The Drosophila Dac gene was cloned as an inhibitor of the hyperactive epidermal growth factor (EGFR), ellipse. Herein, endogenous DACH1 co-localized with p53 in a nuclear, extranucleolar compartment and bound to p53 in human breast cancer cell lines, p53 and DACH1 bound common genes in Chip-Seq. Full inhibition of breast cancer contact-independent growth by DACH1 required p53. The p53 breast cancer mutants R248Q and R273H, evaded DACH1 binding. DACH1 phosphorylation at serine residue (S439) inhibited p53 binding and phosphorylation at p53 amino-terminal sites (S15, S20) enhanced DACH1 binding. DACH1 binding to p53 was inhibited by NAD-dependent deacetylation via DACH1 K628. DACH1 repressed p21CIP1 and induced RAD51, an association found in basal breast cancer. DACH1 inhibits breast cancer cellular growth in an NAD and p53-dependent manner through direct protein-protein association.
机译:乳腺癌是世界上癌症的主要形式。果蝇Dac基因被克隆为过度活跃的表皮生长因子(EGFR),椭圆形的抑制剂。在本文中,内源性DACH1与p53共定位于核外核区,并与人乳腺癌细胞系中的p53结合,p53和DACH1结合了Chip-Seq中的共同基因。 DACH1完全抑制乳腺癌接触非依赖性生长需要p53。 p53乳腺癌突变体R248Q和R273H逃避了DACH1的结合。丝氨酸残基处的DACH1磷酸化(S439)抑制了p53结合,而p53氨基末端位点(S15,S20)的磷酸化增强了DACH1的结合。通过DACH1 K628,NAD依赖性脱乙酰基作用抑制DACH1与p53的结合。 DACH1抑制p21CIP1并诱导RAD51,这是在基础乳腺癌中发现的一种关联。 DACH1通过直接的蛋白质-蛋白质结合以NAD和p53依赖性的方式抑制乳腺癌细胞的生长。

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