4.7 Article

Discovery and Optimization of Pyrrolopyrimidine Derivatives as Selective Disruptors of the Perinucleolar Compartment, a Marker of Tumor Progression toward Metastasis

Journal

JOURNAL OF MEDICINAL CHEMISTRY
Volume 65, Issue 12, Pages 8303-8331

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.jmedchem.2c00204

Keywords

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Funding

  1. National Institute of Mental Health's Psychoactive Drug Screening Program [HHSN-271-2018-00023-C]
  2. National Center for Advancing Translational Sciences Intramural Research Program, Molecular Libraries Initiative [U54HG005031]
  3. Eshelman Institute for Innovation at the UNC Eshelman School of Pharmacy [RX03202105]

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The perinucleolar compartment (PNC) is a subnuclear body enriched with RNA transcripts and RNA-binding proteins. PNC prevalence is positively correlated with cancer progression and metastatic capacity. A high-throughput assay was developed to identify small molecules that can reduce PNC prevalence in cancer cells. The discovery of the pyrrolopyrimidine series led to the identification of the bioavailable analogue metarrestin, which has potent antimetastatic activity.
The perinucleolar compartment (PNC) is a dynamic subnuclear body found at the periphery of the nucleolus. The PNC is enriched with RNA transcripts and RNA-binding proteins, reflecting different states of genome organization. PNC prevalence positively correlates with cancer progression and metastatic capacity, making it a useful marker for metastatic cancer progression. A high-throughput, high-content assay was developed to identify novel small molecules that selectively reduce PNC prevalence in cancer cells. We identified and further optimized a pyrrolopyrimidine series able to reduce PNC prevalence in PC3M cancer cells at submicromolar concentrations without affecting cell viability. Structure-activity relationship exploration of the structural elements necessary for activity resulted in the discovery of several potent compounds. Analysis of in vitro drug-like properties led to the discovery of the bioavailable analogue, metarrestin, which has shown potent antimetastatic activity with improved survival in rodent models and is currently being evaluated in a first-in-human phase 1 clinical trial.

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