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Minor Splicing Inhibition Yields Drug Leads for KRAS-Driven Cancers

In vivo proof-of-concept in zebrafish, mouse and human models confirmed that minor splicing blockade triggers p53-dependent tumor cell death, paving the way for initial inhibitor candidates to enter development.

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Overview

  • Inhibition of the RNPC3 spliceosome component causes DNA lesions that activate the p53 pathway in cancer cells while leaving normal tissues largely unharmed.
  • This approach significantly reduced tumor growth in KRAS-mutant liver, lung and stomach cancer models.
  • Peer-reviewed findings published in EMBO Reports validated minor splicing inhibition across zebrafish, mouse and human lung cancer cells.
  • A National Drug Discovery Centre screen of over 270,000 drug-like molecules has identified several promising minor splicing inhibitor hits.
  • Researchers are advancing these lead compounds toward the development of targeted therapies for cancers that have historically resisted direct KRAS inhibition.