期刊
ARCHIV DER PHARMAZIE
卷 355, 期 11, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ardp.202200288
关键词
AlphaScreen; BET selectivity; bromodomain and extra-terminal (BET) proteins; BROMOscan; X-ray
资金
- NIH/NICHD from the Contraception Research Branch [HHSN275201300017C, P50HD093540]
- Big Ten Academic Alliance hybrid - University of Minnesota Twin Cities
Nine lactone ring-opened ester and seven amide analogs were synthesized based on a previously reported virtual screening hit. However, there was no significant improvement in the affinity and selectivity for BET bromodomains. X-ray analysis showed that the ester side chain was located near the ZA loop and exposed to solvent.
Based on a previously reported 1,4-dihydropyridinebutyrolactone virtual screening hit, nine lactone ring-opened ester and seven amide analogs were prepared. The analogs were designed to provide interactions with residues at the entrance of the ZA loop of the testis-specific bromodomain (ZA) channel to enhance the affinity and selectivity for the bromodomain and extra-terminal (BET) subfamily of bromodomains. Compound testing by AlphaScreen showed that neither the affinity nor the selectivity of the ester and lactam analogs was improved for BRD4-1 and the first bromodomain of the testis-specific bromodomain (BRDT-1). The esters retained affinity comparable to the parent compound, whereas the affinity for the amide analogs was reduced 10-fold. A representative benzyl ester analog was found to retain high selectivity for BET bromodomains as shown by a BROMOscan. X-ray analysis of the allyl ester analog in complex with BRD4-1 and BRDT-1 revealed that the ester side chain is located next to the ZA loop and solvent exposed.
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