Cited by 713Histone Deacetylase Inhibitors ResearchEnzyme function and inhibitionEpigenetics and DNA Methylation

Determination of the class and isoform selectivity of small-molecule histone deacetylase inhibitors

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Khan, Nagma, Jeffers, Michael, Kumar, Sampath, Hackett, Craig, Boldog, Ferenc, Khramtsov, Nicholai, Qian, Xiaozhong, Mills, Evan +9 more·2008·Biochemical Journal

Abstract

The human HDAC (histone deacetylase) family, a well-validated anticancer target, plays a key role in the control of gene expression through regulation of transcription. While HDACs can be subdivided into three main classes, the class I, class II and class III HDACs (sirtuins), it is presently unclear whether inhibiting multiple HDACs using pan-HDAC inhibitors, or targeting specific isoforms that show aberrant levels in tumours, will prove more effective as an anticancer strategy in the clinic. To address the above issues, we have tested a number of clinically relevant HDACis (HDAC inhibitors) against a panel of rhHDAC (recombinant human HDAC) isoforms. Eight rhHDACs were expressed using a baculoviral system, and a Fluor de Lys™ (Biomol International) HDAC assay was optimized for each purified isoform. The potency and selectivity of ten HDACs on class I isoforms (rhHDAC1, rhHDAC2, rhHDAC3 and rhHDAC8) and class II HDAC isoforms (rhHDAC4, rhHDAC6, rhHDAC7 and rhHDAC9) was determined. MS-275 was HDAC1-selective, MGCD0103 was HDAC1- and HDAC2-selective, apicidin was HDAC2- and HDAC3-selective and valproic acid was a specific inhibitor of class I HDACs. The hydroxamic acid-derived compounds (trichostatin A, NVP-LAQ824, panobinostat, ITF2357, vorinostat and belinostat) were potent pan-HDAC inhibitors. The growth-inhibitory effect of the HDACis on HeLa cells showed that both pan-HDAC and class-I-specific inhibitors inhibited cell growth. The results also showed that both pan-HDAC and class-I-specific inhibitor treatment resulted in increased acetylation of histones, but only pan-HDAC inhibitor treatment resulted in increased tubulin acetylation, which is in agreement with their activity towards the HDAC6 isoform.

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Authors
Khan, N., Jeffers, M., Kumar, S., Hackett, C., Boldog, F., Khramtsov, N., Qian, X., Mills, E., Berghs, S. C., Carey, N., Finn, P. W., Collins, L. S., Tumber, A., Ritchie, J. W., Jensen, P. B., Lichenstein, H. S., & Sehested, M.
Affiliations
  • Topotarget UK Ltd, 87a Milton Park, Abingdon, Oxon, OX14 4RY, U.K.
  • CuraGen Corporation, 322 East Main Street, Branford, CT 06405, U.S.A.
  • Topotarget A/S, Symbion Science Park, Fruebjergvej 3, Copenhagen 2100, Denmark
Corresponding author
  • Khan, Nagma
  • Carey, Nessa
  • Tumber, Anthony
Venue
Biochemical Journal
Published
2007-12-21
Volume
409
Issue
2
Pages
581-589
ISSN
  • 0264-6021 (ISSN-L)
  • 1470-8728
OpenAlex
W2050931169
Cited by
713
References
50
Citations by year
2026: 9 · 2025: 16 · 2024: 20 · 2023: 22 · 2022: 24 · 2021: 31 · 2020: 32 · 2019: 34 · 2018: 26 · 2017: 44 · 2016: 37 · 2015: 43 · 2014: 47 · 2013: 66 · 2012: 53
FWCI
21.31
Type
journal article
Language
en
Open access
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • Trinity's Access to Research Output (TARA) (Trinity College Dublin) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Enzyme function and inhibition
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
histone deacetylase inhibitors, HDAC isoform selectivity, pan-HDAC inhibitors, class I HDACs, class II HDACs, sirtuins, entinostat, MGCD0103, apicidin, valproic acid, hydroxamic acid derivatives, trichostatin A, vorinostat, belinostat, panobinostat, tubulin acetylation, histone acetylation, HeLa cells, anticancer drug targets
MeSH terms
Acetylation, Cloning, Molecular, Enzyme Inhibitors, HeLa Cells, Histone Deacetylases, Humans, Recombinant Proteins, Protein Isoforms, Cell Proliferation, Histone Deacetylase Inhibitors

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