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Nguyen A, Mustafa AHM, Leydecker AK, Halilovic M, Murr J, Butter F, Krämer OH. The protein phosphatase-2A subunit PR130 is involved in the formation of cytotoxic protein aggregates in pancreatic ductal adenocarcinoma cells. Cell Commun Signal 2024; 22:217. [PMID: 38570831 PMCID: PMC10993613 DOI: 10.1186/s12964-024-01597-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 03/26/2024] [Indexed: 04/05/2024] Open
Abstract
As a major source of cellular serine and threonine phosphatase activity, protein phosphatase-2A (PP2A) modulates signaling pathways in health and disease. PP2A complexes consist of catalytic, scaffolding, and B-type subunits. Seventeen PP2A B-type subunits direct PP2A complexes to selected substrates. It is ill-defined how PP2A B-type subunits determine the growth and drug responsiveness of tumor cells. Pancreatic ductal adenocarcinoma (PDAC) is a disease with poor prognosis. We analyzed the responses of murine and human mesenchymal and epithelial PDAC cells to the specific PP2A inhibitor phendione. We assessed protein levels by immunoblot and proteomics and cell fate by flow cytometry, confocal microscopy, and genetic manipulation. We show that murine mesenchymal PDAC cells express significantly higher levels of the PP2A B-type subunit PR130 than epithelial PDAC cells. This overexpression of PR130 is associated with a dependency of such metastasis-prone cells on the catalytic activity of PP2A. Phendione induces apoptosis and an accumulation of cytotoxic protein aggregates in murine mesenchymal and human PDAC cells. These processes occur independently of the frequently mutated tumor suppressor p53. Proteomic analyses reveal that phendione upregulates the chaperone HSP70 in mesenchymal PDAC cells. Inhibition of HSP70 promotes phendione-induced apoptosis and phendione promotes a proteasomal degradation of PR130. Genetic elimination of PR130 sensitizes murine and human PDAC cells to phendione-induced apoptosis and protein aggregate formation. These data suggest that the PP2A-PR130 complex dephosphorylates and thereby prevents the aggregation of proteins in tumor cells.
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Affiliation(s)
- Alexandra Nguyen
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Al-Hassan M Mustafa
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
- Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt
| | - Alessa K Leydecker
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Melisa Halilovic
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Janine Murr
- Medical Clinic and Polyclinic II, Klinikum Rechts Der Isar, Technical University Munich, 81675, Munich, Germany
| | - Falk Butter
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
- Federal Research Institute for Animal Health, Südufer 10, 17493, Greifswald, Insel Riems, Germany
| | - Oliver H Krämer
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany.
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Kansy AG, Ashry R, Mustafa AHM, Alfayomy AM, Radsak MP, Zeyn Y, Bros M, Sippl W, Krämer OH. Pharmacological degradation of ATR induces antiproliferative DNA replication stress in leukemic cells. Mol Oncol 2024. [PMID: 38520049 DOI: 10.1002/1878-0261.13638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/05/2024] [Accepted: 03/12/2024] [Indexed: 03/25/2024] Open
Abstract
Mammalian cells replicate ~ 3 × 109 base pairs per cell cycle. One of the key molecules that slows down the cell cycle and prevents excessive DNA damage upon DNA replication stress is the checkpoint kinase ataxia-telangiectasia-and-RAD3-related (ATR). Proteolysis-targeting-chimeras (PROTACs) are an innovative pharmacological invention to molecularly dissect, biologically understand, and therapeutically assess catalytic and non-catalytic functions of enzymes. This work defines the first-in-class ATR PROTAC, Abd110/Ramotac-1. It is derived from the ATR inhibitor VE-821 and recruits the E3 ubiquitin-ligase component cereblon to ATR. Abd110 eliminates ATR rapidly in human leukemic cells. This mechanism provokes DNA replication catastrophe and augments anti-leukemic effects of the clinically used ribonucleotide reductase-2 inhibitor hydroxyurea. Moreover, Abd110 is more effective than VE-821 against human primary leukemic cells but spares normal primary immune cells. CRISPR-Cas9 screens show that ATR is a dependency factor in 116 myeloid and lymphoid leukemia cells. Treatment of wild-type but not of cereblon knockout cells with Abd110 stalls their proliferation which verifies that ATR elimination is the primary mechanism of Abd110. Altogether, our findings demonstrate specific anti-leukemic effects of an ATR PROTAC.
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Affiliation(s)
- Anita G Kansy
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Ramy Ashry
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Department of Oral Pathology, Faculty of Dentistry, Mansoura University, Egypt
| | - Al-Hassan M Mustafa
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
- Department of Zoology, Faculty of Science, Aswan University, Egypt
| | - Abdallah M Alfayomy
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | - Markus P Radsak
- 3rd Department Medicine, University Medical Center Mainz, Germany
| | - Yanira Zeyn
- Department of Dermatology, University Medical Center Mainz, Germany
| | - Matthias Bros
- Department of Dermatology, University Medical Center Mainz, Germany
| | - Wolfgang Sippl
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Oliver H Krämer
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
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Ashry R, Mustafa AHM, Hausmann K, Linnebacher M, Strand S, Sippl W, Wirth M, Krämer OH. NOXA Accentuates Apoptosis Induction by a Novel Histone Deacetylase Inhibitor. Cancers (Basel) 2023; 15:3650. [PMID: 37509312 PMCID: PMC10377841 DOI: 10.3390/cancers15143650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/17/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
Epigenetic modifiers of the histone deacetylase (HDAC) family are often dysregulated in cancer cells. Experiments with small molecule HDAC inhibitors (HDACi) have proven that HDACs are a vulnerability of transformed cells. We evaluated a novel hydroxamic acid-based HDACi (KH16; termed yanostat) in human pancreatic ductal adenocarcinoma (PDAC) cells, short- and long-term cultured colorectal cancer (CRC) cells, and retinal pigment epithelial cells. We show that KH16 induces cell cycle arrest and apoptosis, both time and dose dependently in PDAC and CRC cells. This is associated with altered expression of BCL2 family members controlling intrinsic apoptosis. Recent data illustrate that PDAC cells frequently have an altered expression of the pro-apoptotic BH3-only protein NOXA and that HDACi induce an accumulation of NOXA. Using PDAC cells with a deletion of NOXA by CRISPR-Cas9, we found that a lack of NOXA delayed apoptosis induction by KH16. These results suggest that KH16 is a new chemotype of hydroxamic acid HDACi with superior activity against solid tumor-derived cells. Thus, KH16 is a scaffold for future research on compounds with nanomolar activity against HDACs.
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Affiliation(s)
- Ramy Ashry
- Institute of Toxicology, University Medical Centre Mainz, 55131 Mainz, Germany
- Department of Oral Pathology, Faculty of Dentistry, Mansoura University, Mansoura 35516, Egypt
| | - Al-Hassan M Mustafa
- Institute of Toxicology, University Medical Centre Mainz, 55131 Mainz, Germany
- Department of Zoology, Faculty of Science, Aswan University, Aswan 81528, Egypt
| | - Kristin Hausmann
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Michael Linnebacher
- Clinic of General Surgery, Molecular Oncology and Immunotherapy, Rostock University Medical Center, 18057 Rostock, Germany
| | - Susanne Strand
- Department of Internal Medicine I, Molecular Hepatology, University Medical Center of the Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Wolfgang Sippl
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Matthias Wirth
- Department of Hematology, Oncology and Cancer Immunology, Charité-Universitätsmedizin Berlin, Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany
- Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, 37075 Göttingen, Germany
- German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
| | - Oliver H Krämer
- Institute of Toxicology, University Medical Centre Mainz, 55131 Mainz, Germany
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Fischer MA, Mustafa AHM, Hausmann K, Ashry R, Kansy AG, Liebl MC, Brachetti C, Piée-Staffa A, Zessin M, Ibrahim HS, Hofmann TG, Schutkowski M, Sippl W, Krämer OH. Novel hydroxamic acid derivative induces apoptosis and constrains autophagy in leukemic cells. J Adv Res 2023:S2090-1232(23)00197-2. [PMID: 37467961 DOI: 10.1016/j.jare.2023.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/18/2023] [Accepted: 07/09/2023] [Indexed: 07/21/2023] Open
Abstract
INTRODUCTION Posttranslational modification of proteins by reversible acetylation regulates key biological processes. Histone deacetylases (HDACs) catalyze protein deacetylation and are frequently dysregulated in tumors. This has spurred the development of HDAC inhibitors (HDACi). Such epigenetic drugs modulate protein acetylation, eliminate tumor cells, and are approved for the treatment of blood cancers. OBJECTIVES We aimed to identify novel, nanomolar HDACi with increased potency over existing agents and selectivity for the cancer-relevant class I HDACs (HDAC1,-2,-3,-8). Moreover, we wanted to define how such drugs control the apoptosis-autophagy interplay. As test systems, we used human leukemic cells and embryonic kidney-derived cells. METHODS We synthesized novel pyrimidine-hydroxamic acid HDACi (KH9/KH16/KH29) and performed in vitro activity assays and molecular modeling of their direct binding to HDACs. We analyzed how these HDACi affect leukemic cell fate, acetylation, and protein expression with flow cytometry and immunoblot. The publicly available DepMap database of CRISPR-Cas9 screenings was used to determine sensitivity factors across human leukemic cells. RESULTS Novel HDACi show nanomolar activity against class I HDACs. These agents are superior to the clinically used hydroxamic acid HDACi SAHA (vorinostat). Within the KH-series of compounds, KH16 (yanostat) is the most effective inhibitor of HDAC3 (IC50 = 6 nM) and the most potent inducer of apoptosis (IC50 = 110 nM; p<0.0001) in leukemic cells. KH16 though spares embryonic kidney-derived cells. Global data analyses of knockout screenings verify that HDAC3 is a dependency factor in 115 human blood cancer cells of different lineages, independent of mutations in the tumor suppressor p53. KH16 alters pro- and anti-apoptotic protein expression, stalls cell cycle progression, and induces caspase-dependent processing of the autophagy proteins ULK1 and p62. CONCLUSION These data reveal that HDACs are required to stabilize autophagy proteins through suppression of apoptosis in leukemic cells. HDAC3 appears as a valid anti-cancer target for pharmacological intervention.
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Affiliation(s)
- Marten A Fischer
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany.
| | - Al-Hassan M Mustafa
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany; Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt.
| | - Kristin Hausmann
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.
| | - Ramy Ashry
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany; Department of Oral Pathology, Faculty of Dentistry, Mansoura University, Egypt.
| | - Anita G Kansy
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany.
| | - Magdalena C Liebl
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany.
| | | | - Andrea Piée-Staffa
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany.
| | - Matthes Zessin
- Department of Enzymology, Institute of Biochemistry, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.
| | - Hany S Ibrahim
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo, Egypt.
| | - Thomas G Hofmann
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany.
| | - Mike Schutkowski
- Department of Enzymology, Institute of Biochemistry, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.
| | - Wolfgang Sippl
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.
| | - Oliver H Krämer
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany.
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Mustafa AHM, Krämer OH. Pharmacological Modulation of the Crosstalk between Aberrant Janus Kinase Signaling and Epigenetic Modifiers of the Histone Deacetylase Family to Treat Cancer. Pharmacol Rev 2023; 75:35-61. [PMID: 36752816 DOI: 10.1124/pharmrev.122.000612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 07/08/2022] [Accepted: 08/15/2022] [Indexed: 12/13/2022] Open
Abstract
Hyperactivated Janus kinase (JAK) signaling is an appreciated drug target in human cancers. Numerous mutant JAK molecules as well as inherent and acquired drug resistance mechanisms limit the efficacy of JAK inhibitors (JAKi). There is accumulating evidence that epigenetic mechanisms control JAK-dependent signaling cascades. Like JAKs, epigenetic modifiers of the histone deacetylase (HDAC) family regulate the growth and development of cells and are often dysregulated in cancer cells. The notion that inhibitors of histone deacetylases (HDACi) abrogate oncogenic JAK-dependent signaling cascades illustrates an intricate crosstalk between JAKs and HDACs. Here, we summarize how structurally divergent, broad-acting as well as isoenzyme-specific HDACi, hybrid fusion pharmacophores containing JAKi and HDACi, and proteolysis targeting chimeras for JAKs inactivate the four JAK proteins JAK1, JAK2, JAK3, and tyrosine kinase-2. These agents suppress aberrant JAK activity through specific transcription-dependent processes and mechanisms that alter the phosphorylation and stability of JAKs. Pharmacological inhibition of HDACs abrogates allosteric activation of JAKs, overcomes limitations of ATP-competitive type 1 and type 2 JAKi, and interacts favorably with JAKi. Since such findings were collected in cultured cells, experimental animals, and cancer patients, we condense preclinical and translational relevance. We also discuss how future research on acetylation-dependent mechanisms that regulate JAKs might allow the rational design of improved treatments for cancer patients. SIGNIFICANCE STATEMENT: Reversible lysine-ɛ-N acetylation and deacetylation cycles control phosphorylation-dependent Janus kinase-signal transducer and activator of transcription signaling. The intricate crosstalk between these fundamental molecular mechanisms provides opportunities for pharmacological intervention strategies with modern small molecule inhibitors. This could help patients suffering from cancer.
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Affiliation(s)
- Al-Hassan M Mustafa
- Department of Toxicology, University Medical Center, Mainz, Germany (A.-H.M.M., O.H.K.) and Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt (A.-H.M.M.)
| | - Oliver H Krämer
- Department of Toxicology, University Medical Center, Mainz, Germany (A.-H.M.M., O.H.K.) and Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt (A.-H.M.M.)
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Mustafa AHM, Ashry R, Krämer OH. Monitoring Changes in Intracellular Reactive Oxygen Species Levels in Response to Histone Deacetylase Inhibitors. Methods Mol Biol 2023; 2589:337-344. [PMID: 36255635 DOI: 10.1007/978-1-0716-2788-4_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Reactive oxygen species (ROS) are induced by several chemotherapeutics. In this protocol, we describe a flow cytometry-based method for the analysis of the intracellular levels of ROS in vital leukemic cells in response to the histone deacetylase inhibitor vorinostat. This measurement of ROS using the cell-permeable dye CM-H2DCFDA indicates intracellular oxidative stress.
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Affiliation(s)
- Al-Hassan M Mustafa
- Institute of Toxicology, University Medical Center Mainz, Mainz, Germany.
- Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt.
| | - Ramy Ashry
- Institute of Toxicology, University Medical Center Mainz, Mainz, Germany
- Department of Oral Pathology, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Oliver H Krämer
- Institute of Toxicology, University Medical Center Mainz, Mainz, Germany
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Ibrahim HS, Abdelsalam M, Zeyn Y, Zessin M, Mustafa AHM, Fischer MA, Zeyen P, Sun P, Bülbül EF, Vecchio A, Erdmann F, Schmidt M, Robaa D, Barinka C, Romier C, Schutkowski M, Krämer OH, Sippl W. Synthesis, Molecular Docking and Biological Characterization of Pyrazine Linked 2-Aminobenzamides as New Class I Selective Histone Deacetylase (HDAC) Inhibitors with Anti-Leukemic Activity. Int J Mol Sci 2021; 23:ijms23010369. [PMID: 35008795 PMCID: PMC8745332 DOI: 10.3390/ijms23010369] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 12/23/2021] [Accepted: 12/27/2021] [Indexed: 12/19/2022] Open
Abstract
Class I histone deacetylases (HDACs) are key regulators of cell proliferation and they are frequently dysregulated in cancer cells. We report here the synthesis of a novel series of class-I selective HDAC inhibitors (HDACi) containing a 2-aminobenzamide moiety as a zinc-binding group connected with a central (piperazin-1-yl)pyrazine or (piperazin-1-yl)pyrimidine moiety. Some of the compounds were additionally substituted with an aromatic capping group. Compounds were tested in vitro against human HDAC1, 2, 3, and 8 enzymes and compared to reference class I HDACi (Entinostat (MS-275), Mocetinostat, CI994 and RGFP-966). The most promising compounds were found to be highly selective against HDAC1, 2 and 3 over the remaining HDAC subtypes from other classes. Molecular docking studies and MD simulations were performed to rationalize the in vitro data and to deduce a complete structure activity relationship (SAR) analysis of this novel series of class-I HDACi. The most potent compounds, including 19f, which blocks HDAC1, HDAC2, and HDAC3, as well as the selective HDAC1/HDAC2 inhibitors 21a and 29b, were selected for further cellular testing against human acute myeloid leukemia (AML) and erythroleukemic cancer (HEL) cells, taking into consideration their low toxicity against human embryonic HEK293 cells. We found that 19f is superior to the clinically tested class-I HDACi Entinostat (MS-275). Thus, 19f is a new and specific HDACi with the potential to eliminate blood cancer cells of various origins.
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Affiliation(s)
- Hany S. Ibrahim
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Egyptian Russian University, Badr City, Cairo 11829, Egypt
| | - Mohamed Abdelsalam
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Yanira Zeyn
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany; (Y.Z.); (A.-H.M.M.); (M.A.F.)
| | - Matthes Zessin
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
- Department of Enzymology, Institute of Biochemistry, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany;
| | - Al-Hassan M. Mustafa
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany; (Y.Z.); (A.-H.M.M.); (M.A.F.)
- Department of Zoology, Faculty of Science, Aswan University, Aswan 81528, Egypt
| | - Marten A. Fischer
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany; (Y.Z.); (A.-H.M.M.); (M.A.F.)
| | - Patrik Zeyen
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
| | - Ping Sun
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
| | - Emre F. Bülbül
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
| | - Anita Vecchio
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
| | - Frank Erdmann
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
| | - Matthias Schmidt
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
| | - Dina Robaa
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
| | - Cyril Barinka
- Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 25250 Vestec, Czech Republic;
| | - Christophe Romier
- Département de Biologie Structurale Intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), CNRS, INSERM, Université de Strasbourg, CEDEX, 67404 Illkirch, France;
| | - Mike Schutkowski
- Department of Enzymology, Institute of Biochemistry, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany;
| | - Oliver H. Krämer
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany; (Y.Z.); (A.-H.M.M.); (M.A.F.)
- Correspondence: (O.H.K.); (W.S.)
| | - Wolfgang Sippl
- Department of Medicinal Chemistry, Institute of Pharmacy, Martin-Luther-University of Halle-Wittenberg, 06120 Halle (Saale), Germany; (H.S.I.); (M.A.); (M.Z.); (P.Z.); (P.S.); (E.F.B.); (A.V.); (F.E.); (M.S.); (D.R.)
- Correspondence: (O.H.K.); (W.S.)
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Beyer M, Henninger SJ, Haehnel PS, Mustafa AHM, Gurdal E, Schubert B, Christmann M, Sellmer A, Mahboobi S, Drube S, Sippl W, Kindler T, Krämer OH. Identification of a highly efficient dual type I/II FMS-like tyrosine kinase inhibitor that disrupts the growth of leukemic cells. Cell Chem Biol 2021; 29:398-411.e4. [PMID: 34762849 DOI: 10.1016/j.chembiol.2021.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 08/17/2021] [Accepted: 10/21/2021] [Indexed: 12/20/2022]
Abstract
Internal tandem duplications (ITDs) in the FMS-like tyrosine kinase-3 (FLT3) are causally linked to acute myeloid leukemia (AML) with poor prognosis. Available FLT3 inhibitors (FLT3i) preferentially target inactive or active conformations of FLT3. Moreover, they co-target kinases for normal hematopoiesis, are vulnerable to therapy-associated tyrosine kinase domain (TKD) FLT3 mutants, or lack low nanomolar activity. We show that the tyrosine kinase inhibitor marbotinib suppresses the phosphorylation of FLT3-ITD and the growth of permanent and primary AML cells with FLT3-ITD. This also applies to leukemic cells carrying FLT3-ITD/TKD mutants that confer resistance to clinically used FLT3i. Marbotinib shows high selectivity for FLT3 and alters signaling, reminiscent of genetic elimination of FLT3-ITD. Molecular docking shows that marbotinib fits in opposite orientations into inactive and active conformations of FLT3. The water-soluble marbotinib-carbamate significantly prolongs survival of mice with FLT3-driven leukemia. Marbotinib is a nanomolar next-generation FLT3i that represents a hybrid inhibitory principle.
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Affiliation(s)
- Mandy Beyer
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany
| | - Sven J Henninger
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany
| | - Patricia S Haehnel
- Department of Hematology, Medical Oncology, and Pneumology, University Medical Center, 55131 Mainz, Germany; University Cancer Center, University Medical Center, Mainz, Germany; German Consortia for Translational Cancer Research, 55131 Mainz, Germany
| | - Al-Hassan M Mustafa
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany; Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt
| | - Ece Gurdal
- Institute for Pharmacy, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 3, 06120 Halle (Saale), Germany; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Yeditepe University, Atasehir, Istanbul 34755, Turkey
| | - Bastian Schubert
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany
| | - Markus Christmann
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany
| | - Andreas Sellmer
- Institute of Pharmacy, Department of Pharmaceutical/Medicinal Chemistry I, University of Regensburg, 93053 Regensburg, Germany
| | - Siavosh Mahboobi
- Institute of Pharmacy, Department of Pharmaceutical/Medicinal Chemistry I, University of Regensburg, 93053 Regensburg, Germany
| | - Sebastian Drube
- Institute of Immunology, Jena University Hospital, 07743 Jena, Germany
| | - Wolfgang Sippl
- Institute for Pharmacy, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 3, 06120 Halle (Saale), Germany
| | - Thomas Kindler
- Department of Hematology, Medical Oncology, and Pneumology, University Medical Center, 55131 Mainz, Germany; University Cancer Center, University Medical Center, Mainz, Germany; German Consortia for Translational Cancer Research, 55131 Mainz, Germany
| | - Oliver H Krämer
- Department of Toxicology, University Medical Center, 55131 Mainz, Germany.
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9
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Wachholz V, Mustafa AHM, Zeyn Y, Henninger SJ, Beyer M, Dzulko M, Piée-Staffa A, Brachetti C, Haehnel PS, Sellmer A, Mahboobi S, Kindler T, Brenner W, Nikolova T, Krämer OH. Inhibitors of class I HDACs and of FLT3 combine synergistically against leukemia cells with mutant FLT3. Arch Toxicol 2021; 96:177-193. [PMID: 34665271 PMCID: PMC8748367 DOI: 10.1007/s00204-021-03174-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/29/2021] [Indexed: 12/12/2022]
Abstract
Acute myeloid leukemia (AML) with mutations in the FMS-like tyrosine kinase (FLT3) is a clinically unresolved problem. AML cells frequently have a dysregulated expression and activity of epigenetic modulators of the histone deacetylase (HDAC) family. Therefore, we tested whether a combined inhibition of mutant FLT3 and class I HDACs is effective against AML cells. Low nanomolar doses of the FLT3 inhibitor (FLT3i) AC220 and an inhibition of class I HDACs with nanomolar concentrations of FK228 or micromolar doses of the HDAC3 specific agent RGFP966 synergistically induce apoptosis of AML cells that carry hyperactive FLT3 with an internal tandem duplication (FLT3-ITD). This does not occur in leukemic cells with wild-type FLT3 and without FLT3, suggesting a preferential toxicity of this combination against cells with mutant FLT3. Moreover, nanomolar doses of the new FLT3i marbotinib combine favorably with FK228 against leukemic cells with FLT3-ITD. The combinatorial treatments potentiated their suppressive effects on the tyrosine phosphorylation and stability of FLT3-ITD and its downstream signaling to the kinases ERK1/ERK2 and the inducible transcription factor STAT5. The beneficial pro-apoptotic effects of FLT3i and HDACi against leukemic cells with mutant FLT3 are associated with dose- and drug-dependent alterations of cell cycle distribution and DNA damage. This is linked to a modulation of the tumor-suppressive transcription factor p53 and its target cyclin-dependent kinase inhibitor p21. While HDACi induce p21, AC220 suppresses the expression of p53 and p21. Furthermore, we show that both FLT3-ITD and class I HDAC activity promote the expression of the checkpoint kinases CHK1 and WEE1, thymidylate synthase, and the DNA repair protein RAD51 in leukemic cells. A genetic depletion of HDAC3 attenuates the expression of such proteins. Thus, class I HDACs and hyperactive FLT3 appear to be valid targets in AML cells with mutant FLT3.
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Affiliation(s)
- Vanessa Wachholz
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Al-Hassan M Mustafa
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.,Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt
| | - Yanira Zeyn
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Sven J Henninger
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Mandy Beyer
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Melanie Dzulko
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Andrea Piée-Staffa
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Christina Brachetti
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Patricia S Haehnel
- Department of Hematology, Medical Oncology and Pneumology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany.,German Consortia for Translational Cancer Research, Mainz, Germany
| | - Andreas Sellmer
- Faculty of Chemistry and Pharmacy, Institute of Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Siavosh Mahboobi
- Faculty of Chemistry and Pharmacy, Institute of Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Thomas Kindler
- Department of Hematology, Medical Oncology and Pneumology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany.,German Consortia for Translational Cancer Research, Mainz, Germany
| | - Walburgis Brenner
- Clinic for Obstetrics and Women's Health, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Teodora Nikolova
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Oliver H Krämer
- Department of Toxicology, University Medical Center, Johannes Gutenberg University Mainz, Mainz, Germany.
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10
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Mustafa AHM, Krämer OH. Novel insight into mechanisms for ATR activation by chromatin structures. Arch Toxicol 2021; 95:3433-3434. [PMID: 34382094 PMCID: PMC8448697 DOI: 10.1007/s00204-021-03133-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/05/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Al-Hassan M Mustafa
- Institute of Toxicology, Mainz University Medical Center, Mainz, Germany.,Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt
| | - Oliver H Krämer
- Institute of Toxicology, Mainz University Medical Center, Mainz, Germany.
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11
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Rauch A, Carlstedt A, Emmerich C, Mustafa AHM, Göder A, Knauer SK, Linnebacher M, Heinzel T, Krämer OH. Survivin antagonizes chemotherapy-induced cell death of colorectal cancer cells. Oncotarget 2018; 9:27835-27850. [PMID: 29963241 PMCID: PMC6021236 DOI: 10.18632/oncotarget.25600] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/08/2018] [Indexed: 02/06/2023] Open
Abstract
Irinotecan (CPT-11) and oxaliplatin (L-OHP) are among the most frequently used drugs against colorectal tumors. Therefore, it is important to define the molecular mechanisms that these agents modulate in colon cancer cells. Here we demonstrate that CPT-11 stalls such cells in the G2/M phase of the cell cycle, induces an accumulation of the tumor suppressor p53, the replicative stress/DNA damage marker γH2AX, phosphorylation of the checkpoint kinases ATM and ATR, and an ATR-dependent accumulation of the pro-survival molecule survivin. L-OHP reduces the number of cells in S-phase, stalls cell cycle progression, transiently triggers an accumulation of low levels of γH2AX and phosphorylated checkpoint kinases, and L-OHP suppresses survivin expression at the mRNA and protein levels. Compared to CPT-11, L-OHP is a stronger inducer of caspases and p53-dependent apoptosis. Overexpression and RNAi against survivin reveal that this factor critically antagonizes caspase-dependent apoptosis in cells treated with CPT-11 and L-OHP. We additionally show that L-OHP suppresses survivin through p53 and its downstream target p21, which stalls cell cycle progression as a cyclin-dependent kinase inhibitor (CDKi). These data shed new light on the regulation of survivin by two clinically significant drugs and its biological and predictive relevance in drug-exposed cancer cells.
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Affiliation(s)
- Anke Rauch
- Center for Molecular Biomedicine, Institute of Biochemistry and Biophysics, Department of Biochemistry, Friedrich Schiller University Jena, 07745 Jena, Germany
| | - Annemarie Carlstedt
- Center for Molecular Biomedicine, Institute of Biochemistry and Biophysics, Department of Biochemistry, Friedrich Schiller University Jena, 07745 Jena, Germany.,Leibniz Institute on Aging, Fritz Lipmann Institute, 07745 Jena, Germany
| | - Claudia Emmerich
- Center for Molecular Biomedicine, Institute of Biochemistry and Biophysics, Department of Biochemistry, Friedrich Schiller University Jena, 07745 Jena, Germany
| | - Al-Hassan M Mustafa
- Department of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany
| | - Anja Göder
- Department of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany
| | - Shirley K Knauer
- Department of Molecular Biology, Centre for Medical Biotechnology (ZMB), University of Duisburg-Essen, 45141 Essen, Germany
| | - Michael Linnebacher
- Department of General Surgery, Molecular Oncology and Immunotherapy, University of Rostock, 18057 Rostock, Germany
| | - Thorsten Heinzel
- Center for Molecular Biomedicine, Institute of Biochemistry and Biophysics, Department of Biochemistry, Friedrich Schiller University Jena, 07745 Jena, Germany
| | - Oliver H Krämer
- Department of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, 55131 Mainz, Germany
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