Class I HDAC Inhibitors Display Different Antitumor Mechanism in Leukemia and Prostatic Cancer Cells Depending on Their p53 Status
Open accessAbstract
Previously, we designed and synthesized a series of o -aminobenzamide-based histone deacetylase (HDAC) inhibitors, among which the representative compound 11a exhibited potent inhibitory activity against class I HDACs. In this study, we report the development of more potent hydrazide-based class I selective HDAC inhibitors using 11a as a lead. Representative compound 13b showed a mixed, slow, and tight binding inhibition mechanism for HDAC1, 2, and 3. The most potent compound 13e exhibited low nanomolar IC 50 s toward HDAC1, 2, and 3 and could down-regulate HDAC6 in acute myeloid leukemia MV4-11 cells. The EC 50 of 13e against MV4-11 cells was 34.7 nM, which is 26 times lower than its parent compound 11a . In vitro responses to 13e vary significantly and interestingly based on cell type: in p53 wild-type MV4-11 cells, 13e induced cell death via apoptosis and G1/S cell cycle arrest, which is likely mediated by a p53-dependent pathway, while in p53-null PC-3 cells, 13e caused G2/M arrest and inhibited cell proliferation without inducing caspase-3-dependent apoptosis.
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Benzohydrazides have been employed as ZBGs for targeting class I HDACs.
“In many cases, reports of benzohydrazides have also been employed as ZBGs for targeting class I HDACs [14–16].”
From Medicinal chemistry advances in targeting class I histone deacetylases (2023) · cites this paper as [15]
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- Authors
- Li, X., Peterson, Y. K., Inks, E. S., Himes, R. A., Li, J., Zhang, Y., Kong, X., & Chou, C. J.
- Affiliations
- Medical University of South Carolina (US)
- Lydex Pharmaceuticals, 330 Concord Street, Unit 6A, Charleston, South Carolina 29401, United States
- Shandong University (CN)
- Corresponding author
- Chou, C. James
- Venue
- Journal of Medicinal Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-03-02
- Volume
- 61
- Issue
- 6
- Pages
- 2589-2603
- ISSN
- 0022-2623 (ISSN-L)
- 1520-4804
- PMC
- PMC5908721
- OpenAlex
- W2792072457
- Cited by
- 93
- References
- 7
- Citations by year
- 2026: 5 · 2025: 14 · 2024: 15 · 2023: 14 · 2022: 12 · 2021: 15 · 2020: 8 · 2019: 6 · 2018: 4
- FWCI
- 3.38
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Journal of Medicinal Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Cancer Institute (CA163452)
- National Institute of General Medical Sciences (P20GM103542)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
- Physical Sciences › Chemistry › Organic Chemistry › Synthesis and biological activity
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Enzyme function and inhibition
- Keywords
- class I HDAC inhibitors, histone deacetylase inhibitors, HDAC1, HDAC2, HDAC3, HDAC6, acute myeloid leukemia, prostate cancer, p53 status, apoptosis, G1/S cell cycle arrest, G2/M cell cycle arrest, caspase-3, anticancer mechanism, MV4-11 cells, PC-3 cells
- MeSH terms
- PC-3 Cells, Antineoplastic Agents, Humans, Kinetics, Leukemia, Male, Prostatic Neoplasms, Structure-Activity Relationship, Genes, p53, Apoptosis, CD13 Antigens, Cell Line, Tumor, Caspase 3, Histone Deacetylase 1, Histone Deacetylase Inhibitors, HEK293 Cells, Cell Cycle Checkpoints, Matrix Metalloproteinase Inhibitors, Molecular Docking Simulation
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