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Lyu H, Hou D, Liu H, Ruan S, Tan C, Wu J, Hicks C, Liu B. HER3 targeting augments the efficacy of panobinostat in claudin-low triple-negative breast cancer cells. NPJ Precis Oncol 2023; 7:72. [PMID: 37537339 PMCID: PMC10400567 DOI: 10.1038/s41698-023-00422-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 07/03/2023] [Indexed: 08/05/2023] Open
Abstract
Patients with triple-negative breast cancer (TNBC) have a poor prognosis and high relapse rate due to limited therapeutic options. This study was conducted to determine the mechanisms of action of panobinostat, a pan-inhibitor of histone deacetylase (HDAC) and FDA-approved medication for multiple myeloma, in TNBC and to provide a rationale for effective drug combinations against this aggressive disease. RNA sequencing analyses of the claudin-low (CL) TNBC (MDA-MB-231) cells untreated or treated with panobinostat were performed to identify the differentially expressed genes. Adaptive alterations in gene expression were analyzed and validated in additional CL TNBC cells. Tumor xenograft models were used to test the in vivo antitumor activity of panobinostat alone or its combinations with gefitinib, an EGFR-tyrosine kinase inhibitor (TKI). Panobinostat potently inhibited proliferation and induced apoptosis in all TNBC cells tested. However, in CL TNBC cells, this HDAC inhibitor markedly enhanced expression of HER3, which interacted with EGFR to activate both receptors and Akt signaling pathways. Combinations of panobinostat and gefitinib synergistically suppressed CL TNBC cell proliferation and promoted apoptosis in vitro and in vivo. Upregulation of HER3 compromises the efficacy of panobinostat in CL TNBC. Inactivation of HER3 combined with panobinostat represents a practical approach to combat CL TNBC.
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Affiliation(s)
- Hui Lyu
- Departments of Interdisciplinary Oncology, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA.
- Departments of Genetics, Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA.
| | - Defu Hou
- Departments of Interdisciplinary Oncology, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA
- Department of Biochemistry and Molecular Biology, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Hao Liu
- Departments of Interdisciplinary Oncology, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA
| | - Sanbao Ruan
- Departments of Interdisciplinary Oncology, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA
| | - Congcong Tan
- Departments of Interdisciplinary Oncology, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA
| | - Jiande Wu
- Departments of Genetics, Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA
| | - Chindo Hicks
- Departments of Genetics, Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA
| | - Bolin Liu
- Departments of Interdisciplinary Oncology, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA.
- Departments of Genetics, Stanley S. Scott Cancer Center, School of Medicine, Louisiana State University (LSU) Health Sciences Center, New Orleans, LA, USA.
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Tomaselli D, Lucidi A, Rotili D, Mai A. Epigenetic polypharmacology: A new frontier for epi-drug discovery. Med Res Rev 2020; 40:190-244. [PMID: 31218726 PMCID: PMC6917854 DOI: 10.1002/med.21600] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 05/10/2019] [Accepted: 05/14/2019] [Indexed: 12/11/2022]
Abstract
Recently, despite the great success achieved by the so-called "magic bullets" in the treatment of different diseases through a marked and specific interaction with the target of interest, the pharmacological research is moving toward the development of "molecular network active compounds," embracing the related polypharmacology approach. This strategy was born to overcome the main limitations of the single target therapy leading to a superior therapeutic effect, a decrease of adverse reactions, and a reduction of potential mechanism(s) of drug resistance caused by robustness and redundancy of biological pathways. It has become clear that multifactorial diseases such as cancer, neurological, and inflammatory disorders, may require more complex therapeutic approaches hitting a certain biological system as a whole. Concerning epigenetics, the goal of the multi-epi-target approach consists in the development of small molecules able to simultaneously and (often) reversibly bind different specific epi-targets. To date, two dual histone deacetylase/kinase inhibitors (CUDC-101 and CUDC-907) are in an advanced stage of clinical trials. In the last years, the growing interest in polypharmacology encouraged the publication of high-quality reviews on combination therapy and hybrid molecules. Hence, to update the state-of-the-art of these therapeutic approaches avoiding redundancy, herein we focused only on multiple medication therapies and multitargeting compounds exploiting epigenetic plus nonepigenetic drugs reported in the literature in 2018. In addition, all the multi-epi-target inhibitors known in literature so far, hitting two or more epigenetic targets, have been included.
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Affiliation(s)
- Daniela Tomaselli
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
| | - Alessia Lucidi
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
| | - Dante Rotili
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
| | - Antonello Mai
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
- Pasteur Institute - Cenci Bolognetti Foundation, Viale
Regina Elena 291, 00161 Roma, Italy
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