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ACS chemical biology v.12 no.1, 2017년, pp.163 - 173   SCIE
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Sudemycin K: A Synthetic Antitumor Splicing Inhibitor Variant with Improved Activity and Versatile Chemistry

Makowski, Kamil (Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, ); Vigevani, Luisa (Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, ); Albericio, Fernando (Institute for Research in Biomedicine (IRB-Barcelona), Baldiri i Reixac 10, 08028, Barcelona, ); Valcárcel, Juan (Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Dr. Aiguader 88, 08003 Barcelona, ); Álvarez, Mercedes (Institute for Research in Biomedicine (IRB-Barcelona), Baldiri i Reixac 10, 08028, Barcelona, );
  • 초록  

    Important links exist between the process of pre-mRNA splicing and cancer, as illustrated by the frequent mutation of splicing factors in tumors and the emergence of various families of antitumor drugs that target components of the splicing machinery, notably SF3B1, a protein subunit of spliceosomal U2 small nuclear ribonucleoprotein particle (snRNP). Sudemycins are synthetic compounds that harbor a pharmacophore common to various classes of splicing inhibitors. Here, we describe the synthesis and functional characterization of novel sudemycin analogues that functionally probe key chemical groups within this pharmacophore. Our results confirm the importance of a conjugated diene group and in addition reveal significant spatial flexibility in this region of the molecule. Sudemycin K, a derivative that replaces the pharmacophore’s oxycarbonyl by an amide group, displays improved potency as an inhibitor of cancer cell proliferation, as a regulator of alternative splicing in cultured cells and as an inhibitor of in vitro spliceosome assembly. Sudemycin K displays higher stability, likely related to the replacement of the oxycarbonyl group, which can be a substrate of esterases, by an amide group. The activity and special reactivity of sudemycin K can pave the way to the synthesis and evaluation of a variety of novel sudemycin derivatives. Graphic Abstract ACS Electronic Supporting Info


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