» Articles » PMID: 36982651

Synergistic Interaction of the Class IIa HDAC Inhibitor CHDI0039 with Bortezomib in Head and Neck Cancer Cells

Abstract

In contrast to class I/IIb/pan histone deacetylase inhibitors (HDACi), the role of class IIa HDACi as anti-cancer chemosensitizing agents is less well understood. Here, we studied the effects of HDAC4 in particular and the class IIa HDACi CHDI0039 on proliferation and chemosensitivity in Cal27 and cisplatin-resistant Cal27CisR head and neck squamous cell cancer (HNSCC). HDAC4 and HDAC5 overexpression clones were generated. HDAC4 overexpression (Cal27_HDAC4) increased proliferation significantly compared to vector control cells (Cal27_VC). Chicken chorioallantoic membrane (CAM) studies confirmed the in vitro results: Cal27_HDAC4 tumors were slightly larger than tumors from Cal27_VC, and treatment with CHDI0039 resulted in a significant decrease in tumor size and weight of Cal27_HDAC4 but not Cal27_VC. Unlike class I/pan-HDACi, treatment with CHDI0039 had only a marginal impact on cisplatin cytotoxicity irrespective of HDAC4 and HDAC5 expression. In contrast, the combination of CHDI0039 with bortezomib was synergistic (Chou-Talalay) in MTT and caspase 3/7 activation experiments. RNAseq indicated that treatment with CHDI0039 alters the expression of genes whose up- or downregulation is associated with increased survival in HNSCC patients according to Kaplan-Meier data. We conclude that the combination of class IIa HDACi with proteasome inhibitors constitutes an effective treatment option for HNSCC, particularly for platinum-resistant cancers.

Citing Articles

HDAC4/5 Inhibitor, LMK-235 Improves Animal Voluntary Movement in MPTP-Induced Parkinson's Disease Model.

Lee H, Kim H, Min J, Lee E, Choi D, Choi J Pharmacol Res Perspect. 2025; 13(1):e70057.

PMID: 39806528 PMC: 11729409. DOI: 10.1002/prp2.70057.


Synthesis and biological evaluation of -phenyl phenylhydroxamic acids containing phenothiazine with improved selectivity for class IIa histone deacetylases.

Hsu K, Huang Y, Chu J, Huang Y, Hu J, Lin T J Enzyme Inhib Med Chem. 2024; 39(1):2406025.

PMID: 39316378 PMC: 11423540. DOI: 10.1080/14756366.2024.2406025.


Targeting histone deacetylases in head and neck squamous cell carcinoma: molecular mechanisms and therapeutic targets.

Xu M, Hou Y, Li N, Yu W, Chen L J Transl Med. 2024; 22(1):418.

PMID: 38702756 PMC: 11067317. DOI: 10.1186/s12967-024-05169-9.

References
1.
Tang Z, Li C, Kang B, Gao G, Li C, Zhang Z . GEPIA: a web server for cancer and normal gene expression profiling and interactive analyses. Nucleic Acids Res. 2017; 45(W1):W98-W102. PMC: 5570223. DOI: 10.1093/nar/gkx247. View

2.
Morel D, Jeffery D, Aspeslagh S, Almouzni G, Postel-Vinay S . Combining epigenetic drugs with other therapies for solid tumours - past lessons and future promise. Nat Rev Clin Oncol. 2019; 17(2):91-107. DOI: 10.1038/s41571-019-0267-4. View

3.
Zeng L, Yang X, Wen Y, Mail S, Wang M, Zhang M . Overexpressed HDAC4 is associated with poor survival and promotes tumor progression in esophageal carcinoma. Aging (Albany NY). 2016; 8(6):1236-49. PMC: 4931829. DOI: 10.18632/aging.100980. View

4.
Vasudevan A, Hoffmann M, Beck M, Poschmann G, Petzsch P, Wiek C . HDAC5 Expression in Urothelial Carcinoma Cell Lines Inhibits Long-Term Proliferation but Can Promote Epithelial-to-Mesenchymal Transition. Int J Mol Sci. 2019; 20(9). PMC: 6539474. DOI: 10.3390/ijms20092135. View

5.
Sinatra L, Bandolik J, Roatsch M, Sonnichsen M, Schoeder C, Hamacher A . Hydroxamic Acids Immobilized on Resins (HAIRs): Synthesis of Dual-Targeting HDAC Inhibitors and HDAC Degraders (PROTACs). Angew Chem Int Ed Engl. 2020; 59(50):22494-22499. PMC: 7756583. DOI: 10.1002/anie.202006725. View