Synthesis and evaluation of carbocyanine dyes as PRMT inhibitors and imaging agents.

Synthesis and evaluation of carbocyanine dyes as PRMT inhibitors and imaging agents.
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DOI:
10.1016/j.ejmech.2012.06.017
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发表时间:
2012-08
影响因子:
6.7
通讯作者:
Zheng YG
Zheng YG
中科院分区:
医学1区
文献类型:
--
作者:
Sinha SH;Owens EA;Feng Y;Yang Y;Xie Y;Tu Y;Henary M;Zheng YG

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蛋白质精氨酸甲基化调控多种生物过程。在许多疾病表型中观察到蛋白精氨酸甲基转移酶(PRMT)活性的解除调节。靶向PRMT的小分子探针具有很强的亲和力和选择性,可以作为有价值的工具来剖析精氨酸甲基化的生物学机制,并确定PRMT蛋白在疾病过程中的作用。在这项工作中,我们报道了一类含有吲哚、Benz[e]吲哚或Benz[c,d]吲哚杂环的碳菁化合物的合成和评价,这些化合物与主要的精氨酸甲基转移酶PRMT1结合,并在低微摩尔电势下抑制其甲基转移酶的活性。特别是,所开发的分子具有长波长的比色和荧光活性,可用于细胞或生物组织的光学和近红外荧光成像。总之,这些新的化学探针作为酶抑制剂和显微镜成像的荧光染料在PRMT研究中具有潜在的应用前景。
Protein arginine methylation regulates multiple biological processes. Deregulation of protein arginine methyltransferase (PRMT) activities has been observed in many disease phenotypes. Small molecule probes that target PRMTs with strong affinity and selectivity can be used as valuable tools to dissect biological mechanisms of arginine methylation and establish the role of PRMT proteins in a disease process. In this work, we report synthesis and evaluation of a class of carbocyanine compounds containing indolium, benz[e]indolium or benz[c,d]indolium heterocyclic moieties that bind to the predominant arginine methyltransferase PRMT1 and inhibit its methyltransferase activity at low micromolar potencies. In particular, the developed molecules have long wavelength colorimetric and fluorometric photoactivities, which can be used for optical and near-infrared fluorescence imaging in cells or biological tissues. Together, these new chemical probes have potential application in PRMT studies both as enzyme inhibitors and as fluorescent dyes for microscope imaging.
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