A mammalian genetic system to screen for small molecules capable of disrupting protein-protein interactions

DOIResolve DOI: http://doi.org/10.1021/ac035396m
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TypeArticle
Volume76
Issue10
Pages29222927; # of pages: 6
SubjectEpidermal Growth Factor; genome; pha; Proteins
AbstractA mammalian two-hybrid system was developed for high-throughput screening of compounds that disrupt specific protein-protein interactions. The existing mammalian systems are unsatisfactory for drug screening due to nonregulated expression of interacting proteins. To construct a tightly regulated system, the tetracycline repressor was fused with the inhibitory KRAB domain as a suppressor. The binding of the suppressor to the tet operator entirely blocked expression of two interacting proteins. When both the inducer doxycycline and drugs were added to the culture, the reporter gene was either activated by interaction of the paired proteins with ineffective drugs or remained silent due to disruption of the protein interactions by the effective drugs. We demonstrate that interactions of the type I receptor for TGFbeta with FKBP12 and the epidermal growth factor receptor (EGFR) with p85 are effectively disrupted by FK506 and EGFR kinase inhibitor AG1478, respectively. The power of this system for drug screening was further demonstrated by rapid identification of inhibitors from a druglike library for the receptor kinases
Publication date
AffiliationNRC Biotechnology Research Institute; National Research Council Canada
NoteEnglish15144206
Peer reviewedNo
NRC number46206
NPARC number3540257
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Record identifiere87f496d-5765-4d6a-86c5-c6ed7535a827
Record created2009-03-01
Record modified2016-05-09
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