期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 3, 页码 827-831出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201610816
关键词
bromodomains; chemical probes; epigenetics; medicinal chemistry; structure-based design
资金
- AbbVie
- Bayer Pharma AG
- Boehringer Ingelheim
- Canada Foundation for Innovation
- Eshelman Institute for Innovation
- Genome Canada
- Innovative Medicines Initiative (EU/EFPIA) [115766]
- Janssen
- Novartis Pharma AG
- Ontario Ministry of Economic Development and Innovation
- Pfizer
- Sao Paulo Research Foundation-FAPESP
- Takeda
- Wellcome Trust [092809/Z/10/Z]
- EPSRC Centre for Doctoral Training in Synthesis for Biology and Medicine [EP/L015838/1]
- Merck Co.
- Engineering and Physical Sciences Research Council [1515052] Funding Source: researchfish
The p300/CBP-associated factor (PCAF) and related GCN5 bromodomain-containing lysine acetyl transferases are members of subfamily I of the bromodomain phylogenetic tree. Iterative cycles of rational inhibitor design and biophysical characterization led to the discovery of the triazolopthalazine-based L-45 (dubbed L-Moses) as the first potent, selective, and cell-active PCAF bromodomain (Brd) inhibitor. Synthesis from readily available (1R,2S)-(-)-norephedrine furnished L-45 in enantiopure form. L-45 was shown to disrupt PCAF-Brd histone H3.3 interaction in cells using a nanoBRET assay, and a co-crystal structure of L-45 with the homologous Brd PfGCN5 from Plasmodium falciparum rationalizes the high selectivity for PCAF and GCN5 bromodomains. Compound L-45 shows no observable cytotoxicity in peripheral blood mononuclear cells (PBMC), good cell-permeability, and metabolic stability in human and mouse liver microsomes, supporting its potential for in vivo use.
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