[EN] USE OF CHEMICAL EPIGENETIC MODIFIERS TO MODULATE GENE EXPRESSION [FR] UTILISATION DE MODIFICATEURS ÉPIGÉNÉTIQUES CHIMIQUES POUR MODULER L'EXPRESSION GÉNIQUE
摘要:
The invention relates to relates to a chemical epigenetic modifier (CEM) comprising compound 1 (AP1867) or a pharmaceutically acceptable salt thereof, a linker, and a chromatin regulatory protein ligand and compositions thereof. The invention also relates to methods for modulating expression of a gene comprising contacting a polynucleotide with a target gene sequence to a fusion protein comprising a FK506-binding protein (FKBP) polypeptide with a F36V mutation and a gRNA binding polypeptide, a gRNA comprising a gene targeting polynucleotide sequence that binds to a target gene sequence and a polynucleotide sequence recognized by the gRNA binding polypeptide, a CEM, and a protein with a DNA binding domain that binds to the target gene sequence and the gRNA, thereby modulating expression of the gene.
[EN] METAL COMPLEXES HAVING DUAL HISTONE DEACETYLASE INHIBITORY AND DNA-BINDING ACTIVITY<br/>[FR] COMPLEXES MÉTALLIQUES AYANT UNE DOUBLE ACTIVITÉ INHIBITRICE D'HISTONE DÉSACÉTYLASE ET DE LIAISON À L'ADN
Epigenetic modulators Histone deacetylases (HDACs) and Lysine demethylase (LSD1) are validated targets for anticancer therapy. Both HDAC1/2 and LSD1 are found in association with the repressor protein CoREST in a transcriptional co-repressor complex, which is responsible for gene silencing. Combined modulation of both targets results in a synergistic antiproliferative activity. In the present investigation, we report about the design and synthesis of a series of polyamine-based HDACs-LSD1 dual binding inhibitors obtained by coupling Vorinostat and Tranylcypromine. Compound 4 emerged as the most promising of the synthesized series, showing good inhibitory activity towards HDAC1 and LSD1 either in vitro and in cell-based assay (Ki = 42.52 +/- 8.94 nM and IC50 = 3.85 mu M, respectively). Furthermore, at 70.0 mM compound 4 induced a more pronounced cytotoxic effect than Vorinostat (68.6% vs 56.6% of dead cells) in MCF7 cancer cell line. (C) 2018 Elsevier Ltd. All rights reserved.
METAL COMPLEXES HAVING DUAL HISTONE DEACETYLASE INHIBITORY AND DNA-BINDING ACTIVITY
申请人:Marmion Celine Josephine
公开号:US20120190874A1
公开(公告)日:2012-07-26
Compounds comprising a metal complex having the structure [X—Y—Z-M
n+
]
p+
.B are disclosed in which X is a histone deacetylase inhibitor, M
n+
is a DNA-binding heavy metal ion, Y is an aliphatic or aromatic spacer or is absent, and Z is a mono- or bi-dentate or chelating donor linker, or a bridging linker, P+ designates the charge on the complex ion, which may be positive, negative or absent and B is a counterion or is absent. The linker Z is labile and its metal complex X—Y—Z-M
n+
is capable of being hydrolysed in-vivo. The compounds find application in the treatment of cancer.