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• W3176276572 endingPage "1754" @default.
• W3176276572 startingPage "1743" @default.
• W3176276572 abstract "Abstract Activating mutations in RAS are found in approximately 30% of human cancers, resulting in the delivery of a persistent signal to critical downstream effectors that drive tumorigenesis. RAS-driven malignancies respond poorly to conventional cancer treatments and inhibitors that target RAS directly are limited; therefore, the identification of new strategies and/or drugs to disrupt RAS signaling in tumor cells remains a pressing therapeutic need. Taking advantage of the live-cell bioluminescence resonance energy transfer (BRET) methodology, we describe the development of a NanoBRET screening platform to identify compounds that modulate binding between activated KRAS and the CRAF kinase, an essential effector of RAS that initiates ERK cascade signaling. Using this strategy, libraries containing synthetic compounds, targeted inhibitors, purified natural products, and natural product extracts were evaluated. These efforts resulted in the identification of compounds that inhibit RAS/RAF binding and in turn suppress RAS-driven ERK activation, but also compounds that have the deleterious effect of enhancing the interaction to upregulate pathway signaling. Among the inhibitor hits identified, the majority were compounds derived from natural products, including ones reported to alter KRAS nanoclustering (ophiobolin A), to impact RAF function (HSP90 inhibitors and ROS inducers) as well as some with unknown targets and activities. These findings demonstrate the potential for this screening platform in natural product drug discovery and in the development of new therapeutic agents to target dysregulated RAS signaling in human disease states such as cancer." @default.
• W3176276572 created "2021-07-05" @default.
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• W3176276572 date "2021-06-22" @default.
• W3176276572 modified "2023-10-15" @default.
• W3176276572 title "Development of a High-throughput NanoBRET Screening Platform to Identify Modulators of the RAS/RAF Interaction" @default.
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• W3176276572 doi "https://doi.org/10.1158/1535-7163.mct-21-0175" @default.
• W3176276572 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8419108" @default.
• W3176276572 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34158349" @default.
• W3176276572 hasPublicationYear "2021" @default.
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