Cited by 157Protein Degradation and InhibitorsClick Chemistry and ApplicationsChemical Synthesis and Analysis

Discovery of a Functional Covalent Ligand Targeting an Intrinsically Disordered Cysteine within MYC

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Boike, Lydia, Cioffi, Alexander G., Majewski, Felix C., Co, Jennifer, Henning, Nathaniel J., Jones, Michael D., Liu, Gang, McKenna, Jeffrey M. +3 more·2021·Cell Chemical Biology

Abstract

MYC is a major oncogenic transcriptional driver of most human cancers that has remained intractable to direct targeting because much of MYC is intrinsically disordered. Here, we have performed a cysteine-reactive covalent ligand screen to identify compounds that could disrupt the binding of MYC to its DNA consensus sequence in vitro and also impair MYC transcriptional activity in situ in cells. We have identified a covalent ligand, EN4, that targets cysteine 171 of MYC within a predicted intrinsically disordered region of the protein. We show that EN4 directly targets MYC in cells, reduces MYC and MAX thermal stability, inhibits MYC transcriptional activity, downregulates multiple MYC transcriptional targets, and impairs tumorigenesis. We also show initial structure-activity relationships of EN4 and identify compounds that show improved potency. Overall, we identify a unique ligandable site within an intrinsically disordered region of MYC that leads to inhibition of MYC transcriptional activity.

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Crossref · 10.1016/j.chembiol.2020.09.001

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  • Pairing ABPP with a MYC transcription factor activity assay identified EN4 as a covalent MYC ligand.

    “ABPP was paired with a MYC transcription factor activity assay to identify a covalent MYC ligand, EN4 (ref.179).”

    From Advances in covalent drug discovery (2022) · cites this paper as [179]

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Research works printed but not linked: 1

  1. Ward CC, Kleinman JI, Brittain SM, Lee PS, Chung CYS, Kim K, Petri Y, Thomas JR, Tallarico JA, McKenna JM, (2019b). Covalent Ligand Screening Uncovers a RNF4 E3 Ligase Recruiter for Targeted Protein Degradation Applications. ACS Chem. Biol 14, 2430– 2440. 31059647 PMC7422721

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Authors
Boike, L., Cioffi, A. G., Majewski, F. C., Co, J., Henning, N. J., Jones, M. D., Liu, G., McKenna, J. M., Tallarico, J. A., Schirle, M., & Nomura, D. K.
Affiliations
  • University of California, Berkeley (US)
  • Innovative Genomics Institute (US)
Corresponding author
Nomura, Daniel K.
Venue
Cell Chemical Biology
Publisher
Elsevier BV
Published
2021-01
Volume
28
Issue
1
Pages
4-13.e17
ISSN
  • 2451-9448 (ISSN-L)
  • 2451-9456
OpenAlex
W3089235055
Cited by
154
References
35
Citations by year
2026: 25 · 2025: 39 · 2024: 29 · 2023: 17 · 2022: 20 · 2021: 22 · 2020: 1
FWCI
4.81
Type
journal article
Language
en
Open access
Locations
  • Cell chemical biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health
  • Mark Foundation For Cancer Research
  • Novartis Institutes for BioMedical Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Physical Sciences › Chemistry › Organic Chemistry › Click Chemistry and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
Keywords
c-Myc, intrinsically disordered proteins, covalent ligands, protein thermal stability, structure-activity relationship, MYC inhibitors, carcinogenesis
MeSH terms
Cells, Cultured, Cysteine, Dose-Response Relationship, Drug, Humans, Ligands, Molecular Structure, Proto-Oncogene Proteins c-myc

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