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A credit-card library approach for disrupting protein-protein interactions

Academic Article
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Overview

related to degree

  • Xu, Yang, Ph.D. in Chemistry, Scripps Research 2001 - 2007
  • Moss, Jason, Ph.D. in Chemistry, Scripps Research 2000 - 2005

authors

  • Xu, Yang
  • Shi, J.
  • Yamamoto, N.
  • Moss, Jason
  • Vogt, Peter K.
  • Janda, Kim

publication date

  • April 2006

journal

  • Bioorganic & Medicinal Chemistry  Journal

abstract

  • Protein-protein interfaces are prominent in many therapeutically important targets. Using small organic molecules to disrupt protein-protein interactions is a current challenge in chemical biology. An important example of protein-protein interactions is provided by the Myc protein, which is frequently deregulated in human cancers. Myc belongs to the family of basic helix-loop-helix leucine zipper (bHLH-ZIP) transcription factors. It is biologically active only as heterodimer with the bHLH-ZIP protein Max. Herein, we report a new strategy for the disruption of protein-protein interactions that has been corroborated through the design and synthesis of a small parallel library composed of 'credit-card' compounds. These compounds are derived from a planar, aromatic scaffold and functionalized with four points of diversity. From a 285 membered library, several hits were obtained that disrupted the c-Myc-Max interaction and cellular functions of c-Myc. The IC50 values determined for this small focused library for the disruption of Myc-Max dimerization are quite potent, especially since small molecule antagonists of protein-protein interactions are notoriously difficult to find. Furthermore, several of the compounds were active at the cellular level as shown by their biological effects on Myc action in chicken embryo fibroblast assays. In light of our findings, this approach is considered a valuable addition to the armamentarium of new molecules being developed to interact with protein-protein interfaces. Finally, this strategy for disrupting protein-protein interactions should prove applicable to other families of proteins.

subject areas

  • Animals
  • Basic-Leucine Zipper Transcription Factors
  • Cells, Cultured
  • Chickens
  • Circular Dichroism
  • DNA Probes
  • Electrophoretic Mobility Shift Assay
  • Fluorescence Resonance Energy Transfer
  • Humans
  • Magnetic Resonance Spectroscopy
  • Protein Binding
  • Proto-Oncogene Proteins c-myc
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
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Research

keywords

  • Myc-Max
  • credit-card library
  • oncogenic transformation
  • protein-protein interactions
  • transcriptional regulation
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Identity

International Standard Serial Number (ISSN)

  • 0968-0896

Digital Object Identifier (DOI)

  • 10.1016/j.bmc.2005.11.052

PubMed ID

  • 16384710
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Additional Document Info

start page

  • 2660

end page

  • 2673

volume

  • 14

issue

  • 8

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