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首页> 外文期刊>The FEBS journal >MRP4/ABCC4 expression is regulated by histamine in acute myeloid leukemia cells, determining cAMP efflux
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MRP4/ABCC4 expression is regulated by histamine in acute myeloid leukemia cells, determining cAMP efflux

机译:MRP4 / ABCC4表达受急性髓性白血病细胞中的组胺调节,确定营地流出

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摘要

Intracellular cAMP (i-cAMP) levels play an important role in acute myeloid leukemia (AML) cell proliferation and differentiation. Its levels are the result of cAMP production, degradation, and exclusion. We have previously described histamine H-2 receptors and MRP4/ABCC4 as two potential targets for AML therapy. Acting through histamine H-2 receptors, histamine increases cAMP production/synthesis, while MRP4/ABCC4 is responsible for the exclusion of this cyclic nucleotide. In this study, we show that histamine treatment induces MRP4/ABCC4 expression, augmenting cAMP efflux, and that histamine, in combination with MRP inhibitors, is able to reduce AML cell proliferation. Histamine, through histamine H-2 receptor, increases i-cAMP levels and induces MRP4 transcript and protein levels in U937, KG1a, and HL-60 cells. Moreover, histamine induces MRP4 promoter activity in HEK293T cells transfected with histamine H-2 receptor (HEK293T-H2R). Our results support that the cAMP/Epac-PKA pathway, and not MEK/ERK nor PI3K/AKT signaling cascades, is involved in histamine-mediated upregulation of MRP4 levels. Finally, the addition of histamine potentiates the inhibition of U937, KG1a, and HL-60 cell proliferation induced by MRP4 inhibitors. Our data highlight that the use of a poly-pharmacological approach aimed at different molecular targets would be beneficial in AML treatment.
机译:细胞内cAMP(i-cAMP)水平在急性髓系白血病(AML)细胞增殖和分化中起重要作用。其水平是cAMP产生、降解和排斥的结果。我们之前已经将组胺H-2受体和MRP4/ABCC4描述为AML治疗的两个潜在靶点。组胺通过组胺H-2受体发挥作用,增加cAMP的产生/合成,而MRP4/ABCC4负责排除这种环核苷酸。在这项研究中,我们发现组胺治疗诱导MRP4/ABCC4表达,增加cAMP外排,组胺与MRP抑制剂联合使用,能够减少AML细胞增殖。组胺通过组胺H-2受体增加i-cAMP水平,并诱导U937、KG1a和HL-60细胞中的MRP4转录物和蛋白质水平。此外,组胺在转染组胺H-2受体(HEK293T-H2R)的HEK293T细胞中诱导MRP4启动子活性。我们的结果支持,组胺介导的MRP4水平上调与cAMP/Epac-PKA途径有关,而不是MEK/ERK或PI3K/AKT信号级联。最后,加入组胺可增强MRP4抑制剂对U937、KG1a和HL-60细胞增殖的抑制作用。我们的数据强调,针对不同分子靶点的多药理学方法在AML治疗中是有益的。

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  • 来源
    《The FEBS journal》 |2021年第1期|共15页
  • 作者单位

    Consejo Nacl Invest Cient &

    Tecn Inst Biol &

    Med Expt IBYME Vuelta Obligado 2490 Buenos Aires 1428 DF Argentina;

    Univ Buenos Aires Inst Invest Farmacol ININFA Fac Farm &

    Bioquim UBA CONICET Buenos Aires DF Argentina;

    Consejo Nacl Invest Cient &

    Tecn Inst Biol &

    Med Expt IBYME Vuelta Obligado 2490 Buenos Aires 1428 DF Argentina;

    Univ Buenos Aires Inst Invest Farmacol ININFA Fac Farm &

    Bioquim UBA CONICET Buenos Aires DF Argentina;

    Univ Buenos Aires Inst Invest Farmacol ININFA Fac Farm &

    Bioquim UBA CONICET Buenos Aires DF Argentina;

    Univ Buenos Aires Inst Invest Farmacol ININFA Fac Farm &

    Bioquim UBA CONICET Buenos Aires DF Argentina;

    Univ Buenos Aires Inst Invest Farmacol ININFA Fac Farm &

    Bioquim UBA CONICET Buenos Aires DF Argentina;

    Univ Buenos Aires Inst Invest Farmacol ININFA Fac Farm &

    Bioquim UBA CONICET Buenos Aires DF Argentina;

    Univ Buenos Aires Inst Invest Farmacol ININFA Fac Farm &

    Bioquim UBA CONICET Buenos Aires DF Argentina;

    Consejo Nacl Invest Cient &

    Tecn Inst Biol &

    Med Expt IBYME Vuelta Obligado 2490 Buenos Aires 1428 DF Argentina;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物化学;
  • 关键词

    AML; cAMP efflux; histamine; MRP4; proliferation;

    机译:反洗钱;cAMP外排;组胺;MRP4;激增;

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