Cited by 28Histone Deacetylase Inhibitors ResearchGenomics and Chromatin DynamicsEpigenetics and DNA Methylation

Transcriptomic and genomic studies classify NKL54 as a histone deacetylase inhibitor with indirect influence on MEF2-dependent transcription

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Minisini, Martina, Di Giorgio, Eros, Kerschbamer, Emanuela, Dalla, Emiliano, Faggiani, Massimo, Franforte, Elisa, Meyer-Almes, Franz-Josef, Ragno, Rino +10 more·2022·Nucleic Acids Research

Abstract

In leiomyosarcoma class IIa HDACs (histone deacetylases) bind MEF2 and convert these transcription factors into repressors to sustain proliferation. Disruption of this complex with small molecules should antagonize cancer growth. NKL54, a PAOA (pimeloylanilide o-aminoanilide) derivative, binds a hydrophobic groove of MEF2, which is used as a docking site by class IIa HDACs. However, NKL54 could also act as HDAC inhibitor (HDACI). Therefore, it is unclear which activity is predominant. Here, we show that NKL54 and similar derivatives are unable to release MEF2 from binding to class IIa HDACs. Comparative transcriptomic analysis classifies these molecules as HDACIs strongly related to SAHA/vorinostat. Low expressed genes are upregulated by HDACIs, while abundant genes are repressed. This transcriptional resetting correlates with a reorganization of H3K27 acetylation around the transcription start site (TSS). Among the upregulated genes there are several BH3-only family members, thus explaining the induction of apoptosis. Moreover, NKL54 triggers the upregulation of MEF2 and the downregulation of class IIa HDACs. NKL54 also increases the binding of MEF2D to promoters of genes that are upregulated after treatment. In summary, although NKL54 cannot outcompete MEF2 from binding to class IIa HDACs, it supports MEF2-dependent transcription through several actions, including potentiation of chromatin binding.

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Authors
Minisini, M., Di Giorgio, E., Kerschbamer, E., Dalla, E., Faggiani, M., Franforte, E., Meyer-Almes, F.-J., Ragno, R., Antonini, L., Mai, A., Fiorentino, F., Rotili, D., Chinellato, M., Perin, S., Cendron, L., Weichenberger, C. X., Angelini, A., & Brancolini, C.
Affiliations
  • University of Udine (IT)
  • Department of Medicine, Università degli Studi di Udine. P.le Kolbe 4, 33100 Udine Italy
  • Eurac Research (IT)
  • Department of Chemical Engineering and Biotechnology, University of Applied Science, Haardtring 100, 64295 Darmstadt, Germany
  • Sapienza University of Rome (IT)
  • University of Padua (IT)
  • Ca' Foscari University of Venice (IT)
Corresponding author
Brancolini, Claudio
Venue
Nucleic Acids Research
Published
2022-02-12
Volume
50
Issue
5
Pages
2566-2586
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W4210302835
Cited by
28
References
73
Citations by year
2026: 3 · 2025: 7 · 2024: 9 · 2023: 5 · 2022: 4
FWCI
2.04
Type
journal article
Language
en
Open access
Locations
  • Nucleic Acids Research (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Iris (Roma Tre University) (submittedVersion, cc-by)
  • Institutional Research Information System (University of Udine) (submittedVersion, cc-by-nc-nd)
  • Institutional Research Information System (University of Udine) (submittedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion, other-oa)
  • ARCA (Università Ca' Foscari Venezia) (submittedVersion, cc-by-nc-nd)
  • Open Research (University of Surrey) (submittedVersion, other-oa)
  • Padua Research Archive (University of Padova) (submittedVersion, cc-by)
Funders
  • PRIN (2017JL8SRX)
  • Interreg Italia-Osterreich (ITAT1054 EPIC)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
histone deacetylase inhibitors, class IIa HDACs, MEF2, MEF2D, vorinostat, H3K27 acetylation, transcriptional reprogramming, apoptosis, leiomyosarcoma, chromatin binding
MeSH terms
Vorinostat, Acetylation, Histone Deacetylases, Histone Deacetylase Inhibitors, Transcriptome, MEF2 Transcription Factors

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