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pubmed-article:15824058pubmed:abstractTextMethods for determining protein-protein interactions in mammalian cells typically rely on single reporter functions and are susceptible to variations between samples particularly in regard to levels of transcription, processing and translation. A method has been developed for determining protein-protein interactions in mammalian cells, which bypasses these variables confounding single reporter assays. The approach utilizes two units of gene expression linked to reporter functions that are interposed by a deactivation-activation unit in such a way that the downstream expression unit is switched off. Hence upstream expression occurs regardless of protein-protein interaction, leading to the production of the upstream reporter. In the event of protein-protein interactions, the downstream expression unit is switched on leading to dual reporter read outs. Thus, the ratio of the two reporter activities provides a measure to determine the efficiency of protein-protein interactions. To access the system we screened a mutant of BMPR2 where the interaction between BMPR-II and LIMK is abrogated. BMPR-II is a type II receptor of the TGFbeta superfamily and plays a key role in the pathogenesis of familial pulmonary arterial hypertension. This system has potential for high-throughput screening of libraries (peptide, chemical, cDNA, etc.) to isolate agents that are capable of interfering with highly selective protein-protein interaction.lld:pubmed
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pubmed-article:15824058pubmed:authorpubmed-author:TrembathR CRClld:pubmed
pubmed-article:15824058pubmed:authorpubmed-author:NasimM TMTlld:pubmed
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pubmed-article:15824058pubmed:volume33lld:pubmed
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pubmed-article:15824058pubmed:dateRevised2009-11-19lld:pubmed
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pubmed-article:15824058pubmed:articleTitleA dual-light reporter system to determine the efficiency of protein-protein interactions in mammalian cells.lld:pubmed
pubmed-article:15824058pubmed:affiliationDepartment of Genetics, University of Leicester, Leicester LE1 7RH, UK. mtn4@le.ac.uklld:pubmed
pubmed-article:15824058pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:15824058pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
pubmed-article:15824058pubmed:publicationTypeEvaluation Studieslld:pubmed
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