Cited by 197Protein Degradation and InhibitorsUbiquitin and proteasome pathwaysHistone Deacetylase Inhibitors Research

Modulating PCAF/GCN5 Immune Cell Function through a PROTAC Approach

Bassi, Zuni I., Fillmore, Martin C., Miah, Afjal H., Chapman, Trevor D., Maller, Claire, Roberts, Emma J., Davis, Lauren C., Lewis, Darcy E. +9 more·2018·ACS Chemical Biology

Abstract

P300/CBP-associated factor (PCAF) and general control nonderepressible 5 (GCN5) are closely related epigenetic proteins, each containing an acetyltransferase domain and a bromodomain. Consistent with reported roles for these proteins in immune function, we find that PCAF-deficient macrophages exhibit a markedly reduced ability to produce cytokines upon stimulation with lipopolysaccharide (LPS). Investigating the potential to target this pathway pharmacologically, we show that chemical inhibition of the PCAF/GCN5 bromodomains is insufficient to recapitulate the diminished inflammatory response of PCAF-deficient immune cells. However, by generating the first PCAF/GCN5 proteolysis targeting chimera (PROTAC), we identify small molecules able to degrade PCAF/GCN5 and to potently modulate the expression of multiple inflammatory mediators in LPS-stimulated macrophages and dendritic cells. Our data illustrate the power of the PROTAC approach in the context of multidomain proteins, revealing a novel anti-inflammatory therapeutic opportunity for targeting PCAF/GCN5.

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Crossref · 10.1021/acschembio.8b00705

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22 of 22 references verified0 citation errors · 0 not checkable

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  • GSK983 efficiently degrades PCAF and GCN5 in THP1 acute monocytic leukemia cells.

    “A PCAF/GCN5 PROTAC, named GSK983, efficiently degraded PCAF and GCN5 in THP1 acute monocytic leukemia cells [179].”
  • Protein domains that feature ligandable binding pockets but are not involved in the pathogenic function of a gene can be favourably targeted by PROTACs.

    “Protein domains that feature ligandable binding pockets but are not involved in the pathogenic function of a gene can be favourably targeted by these molecules 26,27 ,”

    From Targeted protein degradation: expanding the toolbox (2019) · cites this paper as [26]

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Authors
Bassi, Z. I., Fillmore, M. C., Miah, A. H., Chapman, T. D., Maller, C., Roberts, E. J., Davis, L. C., Lewis, D. E., Galwey, N. W., Waddington, K. E., Parravicini, V., Macmillan-Jones, A. L., Gongora, C., Humphreys, P. G., Churcher, I., Prinjha, R. K., & Tough, D. F.
Affiliations
  • GlaxoSmithKline (United Kingdom) (GB)
  • Inserm (FR)
  • Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Montpellier F-34298, France
Corresponding author
Tough, David F.
Venue
ACS Chemical Biology
Published
2018-09-10
Volume
13
Issue
10
Pages
2862-2867
ISSN
  • 1554-8929 (ISSN-L)
  • 1554-8937
OpenAlex
W2891213440
Cited by
186
References
22
Citations by year
2026: 22 · 2025: 15 · 2024: 25 · 2023: 31 · 2022: 13 · 2021: 27 · 2020: 29 · 2019: 21 · 2018: 2 · 2014: 1
FWCI
7.38
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Chemical Biology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
Keywords
PCAF, GCN5, PROTACs, bromodomain, protein degradation, macrophages, dendritic cells, lipopolysaccharide, inflammatory cytokines, anti-inflammatory therapy, multidomain proteins
MeSH terms
Protein Domains, p300-CBP-Associated Factor, Animals, Benzoates, Cell Differentiation, Dendritic Cells, Humans, Inflammation, Lipopolysaccharides, Macrophages, Monocytes, Peptide Hydrolases, Piperidines, Pyridazines, Stereoisomerism, Cytokines, Ubiquitin-Protein Ligases, Adaptor Proteins, Signal Transducing, p300-CBP Transcription Factors, Mice, Proteolysis

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