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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: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [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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2
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Culturing patient-derived malignant hematopoietic stem cells in engineered and fully humanized 3D niches. Proc Natl Acad Sci U S A 2021; 118:2114227118. [PMID: 34580200 DOI: 10.1073/pnas.2114227118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2021] [Indexed: 01/13/2023] Open
Abstract
Human malignant hematopoietic stem and progenitor cells (HSPCs) reside in bone marrow (BM) niches, which remain challenging to explore due to limited in vivo accessibility and constraints with humanized animal models. Several in vitro systems have been established to culture patient-derived HSPCs in specific microenvironments, but they do not fully recapitulate the complex features of native bone marrow. Our group previously reported that human osteoblastic BM niches (O-N), engineered by culturing mesenchymal stromal cells within three-dimensional (3D) porous scaffolds under perfusion flow in a bioreactor system, are capable of maintaining, expanding, and functionally regulating healthy human cord blood-derived HSPCs. Here, we first demonstrate that this 3D O-N can sustain malignant CD34+ cells from acute myeloid leukemia (AML) and myeloproliferative neoplasm patients for up to 3 wk. Human malignant cells distributed in the bioreactor system mimicking the spatial distribution found in native BM tissue, where most HSPCs remain linked to the niches and mature cells are released to the circulation. Using human adipose tissue-derived stromal vascular fraction cells, we then generated a stromal-vascular niche and demonstrated that O-N and stromal-vascular niche differentially regulate leukemic UCSD-AML1 cell expansion, immunophenotype, and response to chemotherapy. The developed system offers a unique platform to investigate human leukemogenesis and response to drugs in customized environments, mimicking defined features of native hematopoietic niches and compatible with the establishment of personalized settings.
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3
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Karagianni F, Piperi C, Mpakou V, Spathis A, Foukas PG, Dalamaga M, Pappa V, Papadavid E. Ruxolitinib with resminostat exert synergistic antitumor effects in Cutaneous T-cell Lymphoma. PLoS One 2021; 16:e0248298. [PMID: 33705488 PMCID: PMC7951910 DOI: 10.1371/journal.pone.0248298] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 02/23/2021] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND The combination of JAK/STAT and HDAC inhibitors exerted beneficial effects in haematological malignancies, presenting promising therapeutic CTCL targets. We aim to investigate the efficacy of JAK1/2i ruxolitinib in combination with HDACi resminostat in CTCL in vitro. MATERIAL & METHODS Non-toxic concentrations of ruxolitinib and/or resminostat were administered to MyLa (MF) and SeAx (SS) cells for 24h. Cytotoxicity, cell proliferation and apoptosis were estimated through MTT, BrdU/7AAD and Annexin V/PI assay. Multi-pathway analysis was performed to investigate the effect of JAK1/2i and/or HDACi on JAK/STAT, Akt/mTOR and MAPK signalling pathways. RESULTS Both drugs and their combination were cytotoxic in MyLa (p<0.05) and in SeAx cell line (p<0.001), inhibited proliferation of MyLa (p<0.001) and SeAx (p<0.001) at 24h, compared to untreated cells. Moreover, combined drug treatment induced apoptosis after 24h (p<0.001) in MyLa, and SeAx (p<0.001). The combination of drugs had a strong synergistic effect with a CI<1. Importantly, the drugs' combination inhibited phosphorylation of STAT3 (p<0.001), Akt (p<0.05), ERK1/2 (p<0.001) and JNK (p<0.001) in MyLa, while it reduced activation of Akt (p<0.05) and JNK (p<0.001) in SeAx. CONCLUSION The JAKi/HDACi combination exhibited substantial anti-tumor effects in CTCL cell lines, and may represent a promising novel therapeutic modality for CTCL patients.
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Affiliation(s)
- Fani Karagianni
- 2nd Department of Dermatology and Venereal Diseases, NKUA, Athens, Greece
- * E-mail:
| | | | - Vassiliki Mpakou
- Second Department of Internal Medicine and Research Institute, Attikon University General Hospital, NKUA, Athens, Greece
| | - Aris Spathis
- Second Department of Pathology, National and Kapodistrian University of Athens, Athens, Greece
| | - Periklis G. Foukas
- Second Department of Pathology, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Dalamaga
- 2nd Department of Dermatology and Venereal Diseases, NKUA, Athens, Greece
- Department of Biological Chemistry, NKUA, Athens, Greece
| | - Vasiliki Pappa
- Second Department of Internal Medicine and Research Institute, Attikon University General Hospital, NKUA, Athens, Greece
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4
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Li S, Li H, Ge W, Song K, Yuan C, Yin R. Effect of miR-184 on Proliferation and Apoptosis of Pancreatic Ductal Adenocarcinoma and Its Mechanism. Technol Cancer Res Treat 2020; 19:1533033820943237. [PMID: 32914707 PMCID: PMC7488881 DOI: 10.1177/1533033820943237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Objective: Previous studies have shown that abnormal expression of microRNA-184 leads to a variety of cancers, including pancreatic ductal adenocarcinoma, suggesting microRNA-184 as a new treatment target for pancreatic ductal adenocarcinoma. However, the molecular mechanism of microRNA-184 in pancreatic ductal adenocarcinoma remains unclear. It is important to investigate the effect and role of microRNA-184 in pancreatic ductal adenocarcinoma. Methods: The clinical and laboratory inspection data of 120 patients with pancreatic cancer admitted to the First Affiliated Hospital of Anhui Medical University were compared. MicroRNA-184 expression in tumor tissues and cells was evaluated using reverse transcription polymerase chain reaction. Flow cytometry and Annexin V/propidium iodide staining were performed to examine cell cycle and apoptosis. Western blotting analysis was conducted to measure the protein expression of p-PI3K, p-AKT, JNK1, C-Myc, C-Jun, caspase-9, and caspase-3. Results: MicroRNA-184 expression was low in patients with pancreatic ductal adenocarcinoma. Survival curve showed that patients with lower expression of microRNA-184 in tumor tissues had a worse prognosis and shorter survival time (P < .05), and the multivariate analysis identified that microRNA-184 was an independent prognostic indicator (P < .05). In vitro studies showed that microRNA-184 overexpression induced apoptosis and suppressed cell cycle transition from G1 to S and G2 phases in pancreatic ductal adenocarcinoma cells. Furthermore, molecular studies revealed that inhibition of microRNA-184 promoted the gene expression of p-PI3K, p-AKT, JNK1, C-Myc, and C-Jun compared with the control group. Overexpression of microRNA-184 led to significantly increased expression of caspase-9 and caspase-3 and significantly decreased expression of Bcl-2. Conclusion: This study suggests that microRNA-184 inhibits the proliferation and promotes the apoptosis of pancreatic ductal adenocarcinoma cells by downregulating the expression of C-Myc, C-Jun, and Bcl-2. Our verification of the role of microRNA-184 may provide a novel biomarker for the diagnosis, therapy, and prognosis of pancreatic ductal adenocarcinoma.
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Affiliation(s)
- Shentao Li
- Department of Emergency, 533251Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - He Li
- Department of Emergency, 533251Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Weiwei Ge
- Department of Emergency, 533251Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Kai Song
- Department of Emergency, 533251Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Chunyu Yuan
- Department of Emergency, 533251Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Ran Yin
- Department of Emergency, 533251Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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5
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Cardoso BA. The Bone Marrow Niche - The Tumor Microenvironment That Ensures Leukemia Progression. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1219:259-293. [PMID: 32130704 DOI: 10.1007/978-3-030-34025-4_14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The human body requires a constant delivery of fresh blood cells that are needed to maintain body homeostasis. Hematopoiesis is the process that drives the formation of new blood cells from a single stem cell. This is a complex, orchestrated and tightly regulated process that occurs within the bone marrow. When such process is faulty or deregulated, leukemia arises, develops and thrives by subverting normal hematopoiesis and availing the supplies of this rich milieu.In this book chapter we will describe and characterize the bone marrow microenvironment and its key importance for leukemia expansion. The several components of the bone marrow niche, their interaction with the leukemic cells and the cellular pathways activated within the malignant cells will be emphasized. Finally, novel therapeutic strategies to target this sibling interaction will also be discussed.
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Affiliation(s)
- Bruno António Cardoso
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal.
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6
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Mascarenhas J, Marcellino BK, Lu M, Kremyanskaya M, Fabris F, Sandy L, Mehrotra M, Houldsworth J, Najfeld V, El Jamal S, Petersen B, Moshier E, Hoffman R. A phase I study of panobinostat and ruxolitinib in patients with primary myelofibrosis (PMF) and post--polycythemia vera/essential thrombocythemia myelofibrosis (post--PV/ET MF). Leuk Res 2019; 88:106272. [PMID: 31778911 DOI: 10.1016/j.leukres.2019.106272] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 01/23/2023]
Abstract
Ruxolitinib, a selective JAK1/JAK2 inhibitor, is the current first line therapy for myelofibrosis (MF), which reduces symptomatology and splenomegaly, but does not clearly modify disease course. Panobinostat, a histone deacetylase inhibitor, was shown to be safe and tolerable in phase I and II trials and demonstrated clinical activity in approximately a third of treated patients. Combination therapy of ruxolitinib and panobinostat showed synergistic activity in a preclinical MF model, which prompted clinical evaluation of this combination in both ruxolitinib naïve and treated MF patients. Herein, we report the results of an investigator-initiated, dose escalation, phase I trial of ruxolitinib and panobinostat in 15 patients with primary MF and post-polycythemia vera/essential thrombocythemia MF. This combination treatment proved to be safe and tolerable without dose limiting thrombocytopenia and a maximum tolerated dose of both agents in combination was not determined. The majority of patients maintained stable disease with this combination treatment and 40 % attained a clinical improvement (spleen n = 5, anemia n = 1) by modified IWG-MRT at the end of 6 cycles. This is one of the first attempts of rationally designed, JAK inhibitor-based, combination therapy studies and exemplifies the feasibility of such an approach in patients with advanced MF.
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Affiliation(s)
- J Mascarenhas
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States.
| | - B K Marcellino
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - M Lu
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - M Kremyanskaya
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - F Fabris
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - L Sandy
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - M Mehrotra
- Pathology Department, The Mount Sinai Hospital, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - J Houldsworth
- Pathology Department, The Mount Sinai Hospital, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - V Najfeld
- Pathology Department, The Mount Sinai Hospital, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - S El Jamal
- Pathology Department, The Mount Sinai Hospital, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - B Petersen
- Pathology Department, The Mount Sinai Hospital, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - E Moshier
- Department of Biostatistics, The Mount Sinai Hospital, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
| | - R Hoffman
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1079, New York, NY, 10029, United States
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7
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Wu Q, Wu W, Fu B, Shi L, Wang X, Kuca K. JNK signaling in cancer cell survival. Med Res Rev 2019; 39:2082-2104. [PMID: 30912203 DOI: 10.1002/med.21574] [Citation(s) in RCA: 172] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 02/01/2019] [Accepted: 03/08/2019] [Indexed: 12/13/2022]
Abstract
c-Jun N-terminal kinase (JNK) is involved in cancer cell apoptosis; however, emerging evidence indicates that this Janus signaling promotes cancer cell survival. JNK acts synergistically with NF-κB, JAK/STAT, and other signaling molecules to exert a survival function. JNK positively regulates autophagy to counteract apoptosis, and its effect on autophagy is related to the development of chemotherapeutic resistance. The prosurvival effect of JNK may involve an immune evasion mechanism mediated by transforming growth factor-β, toll-like receptors, interferon-γ, and autophagy, as well as compensatory JNK-dependent cell proliferation. The present review focuses on recent advances in understanding the prosurvival function of JNK and its role in tumor development and chemoresistance, including a comprehensive analysis of the molecular mechanisms underlying JNK-mediated cancer cell survival. There is a focus on the specific "Yin and Yang" functions of JNK1 and JNK2 in the regulation of cancer cell survival. We highlight recent advances in our knowledge of the roles of JNK in cancer cell survival, which may provide insight into the distinct functions of JNK in cancer and its potential for cancer therapy.
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Affiliation(s)
- Qinghua Wu
- College of Life Science, Yangtze University, Jingzhou, China.,College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China.,Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Wenda Wu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China.,Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Bishi Fu
- Department of Microbiology & Immunobiology, Harvard Medical School, Boston, MA
| | - Lei Shi
- Transcriptional Networks in Lung Cancer Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester, United Kingdom
| | - Xu Wang
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, China
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic.,Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur, Malaysia
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8
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Cardoso BA, Ramos TL, Belo H, Vilas-Boas F, Real C, Almeida AM. Vorinostat synergizes with antioxidant therapy to target myeloproliferative neoplasms. Exp Hematol 2019; 72:60-71.e11. [PMID: 30769020 DOI: 10.1016/j.exphem.2019.02.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 02/06/2023]
Abstract
BCR-ABL-negative myeloproliferative neoplasms (MPNs) are driven by JAK-STAT pathway activation, but epigenetic alterations also play an important pathophysiological role. These can be pharmacologically manipulated with histone deacetylase inhibitors (HDACIs), which have proven to be clinically effective in the treatment of MPNs but exhibit dose-limiting toxicity. The treatment of primary MPN cells with vorinostat modulates the expression of genes associated with apoptosis, cell cycle, inflammation, and signaling. The induction of this transcriptional program results in decreased cellular viability, paralleled by a decrease in levels of reactive oxygen species (ROS). In vitro manipulation of ROS levels revealed that the reduction of ROS levels promoted apoptosis. When vorinostat was combined with antioxidant agents, the apoptosis of MPN cells increased in a synergistic manner. The results described here suggest a novel and promising therapeutic strategy combining HDACIs with ROS-reducing agents to treat MPNs.
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Affiliation(s)
- Bruno A Cardoso
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E, Lisboa, Portugal; Centro de Estudos de Doenças Crónicas, CEDOC, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Teresa L Ramos
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E, Lisboa, Portugal; Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Salamanca, Spain
| | - Hélio Belo
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E, Lisboa, Portugal; Centro de Estudos de Doenças Crónicas, CEDOC, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Filipe Vilas-Boas
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Carla Real
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - António M Almeida
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa Francisco Gentil, E.P.E, Lisboa, Portugal; Centro de Estudos de Doenças Crónicas, CEDOC, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisboa, Portugal; Hospital da Luz, Lisboa, Portugal.
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9
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Ramos TL, Sánchez-Abarca LI, Redondo A, Hernández-Hernández Á, Almeida AM, Puig N, Rodríguez C, Ortega R, Preciado S, Rico A, Muntión S, Porras JRG, Del Cañizo C, Sánchez-Guijo F. HDAC8 overexpression in mesenchymal stromal cells from JAK2+ myeloproliferative neoplasms: a new therapeutic target? Oncotarget 2018; 8:28187-28202. [PMID: 28390197 PMCID: PMC5438642 DOI: 10.18632/oncotarget.15969] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 02/18/2017] [Indexed: 12/26/2022] Open
Abstract
Histone deacetylases (HDACs) are involved in epigenetic modulation and their aberrant expression has been demonstrated in myeloproliferative neoplasms (MPN). HDAC8 inhibition has been shown to inhibit JAK2/STAT5 signaling in hematopoietic cells from MPN. Nevertheless, the role of HDAC8 expression in bone marrow-mesenchymal stromal cells (BM-MSC) has not been assessed. In the current work we describe that HDAC8 is significantly over-expressed in MSC from in JAK-2 positive MPN compared to those from healthy-donors (HD-MSC). Using a selective HDAC8 inhibitor (PCI34051), we verified that the subsequent decrease in the protein and mRNA expression of HDAC8 is linked with an increased apoptosis of malignant MSC whereas it has no effects on normal MSC. In addition, HDAC8 inhibition in MPN-MSC also decreased their capacity to maintain neoplastic hematopoiesis, by increasing the apoptosis, cell-cycle arrest and colony formation of JAK2+-hematopoietic cells. Mechanistic studies using different MPN cell lines revealed that PCI34051 induced their apoptosis, which is enhanced when were co-cultured with JAK2V617F-MSC, decreased their colony formation and the phosphorylation of STAT3 and STAT5. In summary, we show for the first time that the inhibition of HDAC8 in MSC from JAK2+ MPN patients selectively decreases their hematopoietic-supporting ability, suggesting that HDAC8 may be a potential therapeutic target in this setting by acting not only on hematopoietic cells but also on the malignant microenvironment.
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Affiliation(s)
- Teresa L Ramos
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - Luis Ignacio Sánchez-Abarca
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain.,Centro de Investigación del Cáncer, Universidad de Salamanca, Spain
| | - Alba Redondo
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - Ángel Hernández-Hernández
- Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain.,Departamento de Bioquímica y Biología Molecular, Universidad de Salamanca, Spain
| | - Antonio M Almeida
- Unidade de Investigação em Patobiologia Molecular, Instituto Português de Oncologia de Lisboa, Portugal
| | - Noemí Puig
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain
| | - Concepción Rodríguez
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain.,Centro de Investigación del Cáncer, Universidad de Salamanca, Spain
| | - Rebeca Ortega
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - Silvia Preciado
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - Ana Rico
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - Sandra Muntión
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - José Ramón González Porras
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - Consuelo Del Cañizo
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain
| | - Fermín Sánchez-Guijo
- Universidad de Salamanca-IBSAL-Hospital Universitario, Servicio de Hematología, Spain.,Centro en Red de Medicina Regenerativa y Terapia Celular de Castilla y León, Spain.,Centro de Investigación del Cáncer, Universidad de Salamanca, Spain
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10
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Rocca S, Carrà G, Poggio P, Morotti A, Brancaccio M. Targeting few to help hundreds: JAK, MAPK and ROCK pathways as druggable targets in atypical chronic myeloid leukemia. Mol Cancer 2018; 17:40. [PMID: 29455651 PMCID: PMC5817721 DOI: 10.1186/s12943-018-0774-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 02/01/2018] [Indexed: 12/19/2022] Open
Abstract
Atypical Chronic Myeloid Leukemia (aCML) is a myeloproliferative neoplasm characterized by neutrophilic leukocytosis and dysgranulopoiesis. From a genetic point of view, aCML shows a heterogeneous mutational landscape with mutations affecting signal transduction proteins but also broad genetic modifiers and chromatin remodelers, making difficult to understand the molecular mechanisms causing the onset of the disease. The JAK-STAT, MAPK and ROCK pathways are known to be responsible for myeloproliferation in physiological conditions and to be aberrantly activated in myeloproliferative diseases. Furthermore, experimental evidences suggest the efficacy of inhibitors targeting these pathways in repressing myeloproliferation, opening the way to deep clinical investigations. However, the activation status of these pathways is rarely analyzed when genetic mutations do not occur in a component of the signaling cascade. Given that mutations in functionally unrelated genes give rise to the same pathology, it is tempting to speculate that alteration in the few signaling pathways mentioned above might be a common feature of pathological myeloproliferation. If so, targeted therapy would be an option to be considered for aCML patients.
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Affiliation(s)
- Stefania Rocca
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Torino, Italy
| | - Giovanna Carrà
- Department of Clinical and Biological Sciences, University of Torino, 10043, Orbassano, Italy
| | - Pietro Poggio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Torino, Italy
| | - Alessandro Morotti
- Department of Clinical and Biological Sciences, University of Torino, 10043, Orbassano, Italy
| | - Mara Brancaccio
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126, Torino, Italy.
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11
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Mesenchymal stromal cells (MSC) from JAK2+ myeloproliferative neoplasms differ from normal MSC and contribute to the maintenance of neoplastic hematopoiesis. PLoS One 2017; 12:e0182470. [PMID: 28796790 PMCID: PMC5552029 DOI: 10.1371/journal.pone.0182470] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 07/19/2017] [Indexed: 12/16/2022] Open
Abstract
There is evidence of continuous bidirectional cross-talk between malignant cells and bone marrow-derived mesenchymal stromal cells (BM-MSC), which favors the emergence and progression of myeloproliferative neoplastic (MPN) diseases. In the current work we have compared the function and gene expression profile of BM-MSC from healthy donors (HD-MSC) and patients with MPN (JAK2V617F), showing no differences in the morphology, proliferation and differentiation capacity between both groups. However, BM-MSC from MPN expressed higher mean fluorescence intensity (MIF) of CD73, CD44 and CD90, whereas CD105 was lower when compared to controls. Gene expression profile of BM-MSC showed a total of 169 genes that were differentially expressed in BM-MSC from MPN patients compared to HD-MSC. In addition, we studied the ability of BM-MSC to support the growth and survival of hematopoietic stem/progenitor cells (HSPC), showing a significant increase in the number of CFU-GM colonies when MPN-HSPC were co-cultured with MPN-MSC. Furthermore, MPN-MSC showed alteration in the expression of genes associated to the maintenance of hematopoiesis, with an overexpression of SPP1 and NF-kB, and a downregulation of ANGPT1 and THPO. Our results suggest that BM-MSC from JAK2+ patients differ from their normal counterparts and favor the maintenance of malignant clonal hematopoietic cells.
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12
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Bartalucci N, Calabresi L, Balliu M, Martinelli S, Rossi MC, Villeval JL, Annunziato F, Guglielmelli P, Vannucchi AM. Inhibitors of the PI3K/mTOR pathway prevent STAT5 phosphorylation in JAK2V617F mutated cells through PP2A/CIP2A axis. Oncotarget 2017; 8:96710-96724. [PMID: 29228564 PMCID: PMC5722516 DOI: 10.18632/oncotarget.18073] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 05/10/2017] [Indexed: 12/14/2022] Open
Abstract
Inhibition of the constitutively activated JAK/STAT pathway in JAK2V617F mutated cells by the JAK1/JAK2 inhibitor ruxolitinib resulted in clinical benefits in patients with myeloproliferative neoplasms. However, evidence of disease-modifying effects remains scanty; furthermore, some patients do not respond adequately to ruxolitinib, or have transient responses, thus novel treatment strategies are needed. Here we demonstrate that ruxolitinib causes incomplete inhibition of STAT5 in JAK2V617F mutated cells due to persistence of phosphorylated serine residues of STAT5b, that conversely are targeted by PI3K and mTORC1 inhibitors. We found that PI3K/mTOR-dependent phosphorylation of STAT5b serine residues involves Protein Phosphatase 2A and its repressor CIP2A. The levels of CIP2A were found increased in cells harboring the JAK2V617F mutation, and we provide evidence of a correlation between clinical responses and the extent of CIP2A downregulation in myelofibrosis patients receiving the mTOR inhibitor RAD001 in a phase II clinical trial. To achieve maximal inhibition of STAT5 phosphorylation, we combined ruxolitinib with BKM120, a PI3K inhibitor, and RAD001, an mTOR inhibitor, obtaining improved efficacy in JAK2V617F mutated cell lines, primary patients’ cells, and JAK2V617F knock-in mice. These findings contribute to understanding the effectiveness of PI3K/mTOR inhibitors in MPN and argue for the rationale to develop combination clinical trials.
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Affiliation(s)
- Niccolò Bartalucci
- CRIMM, Centro di Ricerca e Innovazione per le Malattie Mieloproliferative, Azienda Ospedaliera Universitaria Careggi, Florence, Italy.,Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
| | - Laura Calabresi
- CRIMM, Centro di Ricerca e Innovazione per le Malattie Mieloproliferative, Azienda Ospedaliera Universitaria Careggi, Florence, Italy.,Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
| | - Manjola Balliu
- CRIMM, Centro di Ricerca e Innovazione per le Malattie Mieloproliferative, Azienda Ospedaliera Universitaria Careggi, Florence, Italy.,Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
| | - Serena Martinelli
- CRIMM, Centro di Ricerca e Innovazione per le Malattie Mieloproliferative, Azienda Ospedaliera Universitaria Careggi, Florence, Italy.,Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
| | - Maria Caterina Rossi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
| | - Jean Luc Villeval
- INSERM, Unité Mixte de Recherche (UMR) 1170, Institut Gustave Roussy, Villejuif, France
| | - Francesco Annunziato
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
| | - Paola Guglielmelli
- CRIMM, Centro di Ricerca e Innovazione per le Malattie Mieloproliferative, Azienda Ospedaliera Universitaria Careggi, Florence, Italy.,Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
| | - Alessandro M Vannucchi
- CRIMM, Centro di Ricerca e Innovazione per le Malattie Mieloproliferative, Azienda Ospedaliera Universitaria Careggi, Florence, Italy.,Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,DENOTHE Excellence Center, Florence, Italy
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13
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Bose P, Verstovsek S. Investigational histone deacetylase inhibitors (HDACi) in myeloproliferative neoplasms. Expert Opin Investig Drugs 2016; 25:1393-1403. [PMID: 27756180 DOI: 10.1080/13543784.2016.1250882] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION The Philadelphia chromosome negative myeloproliferative neoplasms (MPN) mainly comprise polycythemia vera (PV), essential thrombocythemia (ET) and myelofibrosis (MF, primary or post-PV/ET). Therapy in PV and ET focuses on minimizing thrombosis and bleeding risk, while in MF, prolongation of survival is an important goal. Different cytoreductive agents are employed in high risk PV and ET, while the JAK inhibtior ruxolitinib is the cornerstone of therapy in MF. Histone deacetylase inhibitors (HDACi) are pleiotropic agents with diverse epigenetic and non-epigenetic actions, selectively in transformed cells. A number of HDACi have been or are being investigated in MPN. Areas covered: The mechanisms of action of HDACI in neoplastic cells are summarized, and the preclinical rationale and data supporting their development in MPN specifically examined, particularly their synergism with JAK inhibitors. Major findings of clinical trials of HDACi, both alone and in combination with ruxolitinib, in MPN are then discussed, with particular attention to their toxicities and disease-modifying effects. Expert opinion: HDACi are clearly active in MPN, and there is good preclinical rationale for this. Their combination with ruxolitinib in MF is promising, but the long-term tolerability of these agents is an important concern. Further development in PV or ET appears unlikely.
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Affiliation(s)
- Prithviraj Bose
- a Department of Leukemia , University of Texas MD Anderson Cancer Center , Houston , TX , USA
| | - Srdan Verstovsek
- a Department of Leukemia , University of Texas MD Anderson Cancer Center , Houston , TX , USA
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