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Zhu B, Sun L, Li Z, Shang P, Yang C, Li K, Li J, Zhi Q, Hua Z. Zinc as a potential regulator of the BCR-ABL oncogene in chronic myelocytic leukemia cells. J Trace Elem Med Biol 2024; 83:127407. [PMID: 38325182 DOI: 10.1016/j.jtemb.2024.127407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/21/2024] [Accepted: 01/30/2024] [Indexed: 02/09/2024]
Abstract
BACKGROUND Generally, decreased zinc in the serum of tumor patients but increased zinc in tumor cells can be observed. However, the role of zinc homeostasis in myeloid leukemia remains elusive. BCR-ABL is essential for the initiation, maintenance, and progression of chronic myelocytic leukemia (CML). We are currently investigating the association between zinc homeostasis and CML. METHODS Genes involved in zinc homeostasis were examined using three GEO datasets. Western blotting and qPCR were used to investigate the effects of zinc depletion on BCR-ABL expression. Furthermore, the effect of TPEN on BCR-ABL promoter activity was determined using the dual-luciferase reporter assay. MRNA stability and protein stability of BCR-ABL were assessed using actinomycin D and cycloheximide. RESULTS Transcriptome data mining revealed that zinc homeostasis-related genes were associated with CML progression and drug resistance. Several zinc homeostasis genes were affected by TPEN. Additionally, we found that zinc depletion by TPEN decreased BCR-ABL mRNA stability and transcriptional activity in K562 CML cells. Zinc supplementation and sodium nitroprusside treatment reversed BCR-ABL downregulation by TPEN, suggesting zinc- and nitric oxide-dependent mechanisms. CONCLUSION Our in vitro findings may help to understand the role of zinc homeostasis in BCR-ABL regulation and thus highlight the importance of zinc homeostasis in CML.
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MESH Headings
- Humans
- Apoptosis
- Ethylenediamines/pharmacology
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- Fusion Proteins, bcr-abl/pharmacology
- Genes, abl
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Zinc/metabolism
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Affiliation(s)
- Bo Zhu
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China.
| | - Longshuo Sun
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Zhonghua Li
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Pengyou Shang
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Chunhao Yang
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Kaiqiang Li
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Jiahuang Li
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Qi Zhi
- Department of Radiology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, PR China
| | - Zichun Hua
- School of Biopharmacy, China Pharmaceutical University, Nanjing 211198, PR China; State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China.
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Therapy Resistance and Disease Progression in CML: Mechanistic Links and Therapeutic Strategies. Curr Hematol Malig Rep 2022; 17:181-197. [PMID: 36258106 DOI: 10.1007/s11899-022-00679-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/14/2022] [Indexed: 01/27/2023]
Abstract
PURPOSE OF REVIEW Despite the adoption of tyrosine kinases inhibitors (TKIs) as molecular targeted therapy in chronic myeloid leukemia, some patients do not respond to treatment and even experience disease progression. This review aims to give a broad summary of advances in understanding of the mechanisms of therapy resistance, as well as management strategies that may overcome or prevent the emergence of drug resistance. Ultimately, the goal of therapy is the cure of CML, which will also require an increased understanding of the leukemia stem cell (LSC). RECENT FINDINGS Resistance to tyrosine kinase inhibitors stems from a range of possible causes. Mutations of the BCR-ABL1 fusion oncoprotein have been well-studied. Other causes range from cell-intrinsic factors, such as the inherent resistance of primitive stem cells to drug treatment, to mechanisms extrinsic to the leukemic compartment that help CML cells evade apoptosis. There exists heterogeneity in TKI response among different hematopoietic populations in CML. The abundances of these TKI-sensitive and TKI-insensitive populations differ from patient to patient and contribute to response heterogeneity. It is becoming clear that targeting the BCR-ABL1 kinase through TKIs is only one part of the equation, and TKI usage alone may not cure the majority of patients with CML. Considerable effort should be devoted to targeting the BCR-ABL1-independent mechanisms of resistance and persistence of CML LSCs.
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Provenzano A, Chetta M, De Filpo G, Cantini G, La Barbera A, Nesi G, Santi R, Martinelli S, Rapizzi E, Luconi M, Maggi M, Mannelli M, Ercolino T, Canu L. Novel Germline PHD2 Variant in a Metastatic Pheochromocytoma and Chronic Myeloid Leukemia, but in the Absence of Polycythemia. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:medicina58081113. [PMID: 36013579 PMCID: PMC9416477 DOI: 10.3390/medicina58081113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/11/2022] [Accepted: 08/14/2022] [Indexed: 11/16/2022]
Abstract
Background: Pheochromocytoma (Pheo) and paraganglioma (PGL) are rare tumors, mostly resulting from pathogenic variants of predisposing genes, with a genetic contribution that now stands at around 70%. Germline variants account for approximately 40%, while the remaining 30% is attributable to somatic variants. Objective: This study aimed to describe a new PHD2 (EGLN1) variant in a patient affected by metastatic Pheo and chronic myeloid leukemia (CML) without polycythemia and to emphasize the need to adopt a comprehensive next-generation sequencing (NGS) panel. Methods: Genetic analysis was carried out by NGS. This analysis was initially performed using a panel of genes known for tumor predisposition (EGLN1, EPAS1, FH, KIF1Bβ, MAX, NF1, RET, SDHA, SDHAF2, SDHB, SDHC, SDHD, TMEM127, and VHL), followed initially by SNP-CGH array, to exclude the presence of the pathogenic Copy Number Variants (CNVs) and the loss of heterozygosity (LOH) and subsequently by whole exome sequencing (WES) comparative sequence analysis of the DNA extracted from tumor fragments and peripheral blood. Results: We found a novel germline PHD2 (EGLN1) gene variant, c.153G>A, p.W51*, in a patient affected by metastatic Pheo and chronic myeloid leukemia (CML) in the absence of polycythemia. Conclusions: According to the latest guidelines, it is mandatory to perform genetic analysis in all Pheo/PGL cases regardless of phenotype. In patients with metastatic disease and no evidence of polycythemia, we propose testing for PHD2 (EGLN1) gene variants. A possible correlation between PHD2 (EGLN1) pathogenic variants and CML clinical course should be considered.
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Affiliation(s)
- Aldesia Provenzano
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
| | - Massimiliano Chetta
- Medical Genetics, Azienda Ospedaliera di Rilievo Nazionale (A.O.R.N.) Cardarelli, Padiglione, 80131 Naples, Italy
| | - Giuseppina De Filpo
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
| | - Giulia Cantini
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
| | - Andrea La Barbera
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
| | - Gabriella Nesi
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- Department of Health Sciences, University of Florence, 50139 Florence, Italy
| | - Raffaella Santi
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- Department of Health Sciences, University of Florence, 50139 Florence, Italy
| | - Serena Martinelli
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
| | - Elena Rapizzi
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
- Department of Experimental and Clinical Medicine, University of Florence, 50139 Florence, Italy
| | - Michaela Luconi
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
| | - Mario Maggi
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
- Endocrinology Unit, Azienda Ospedaliera-Universitaria Careggi, 50139 Florence, Italy
| | - Massimo Mannelli
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
| | - Tonino Ercolino
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
- Endocrinology Unit, Azienda Ospedaliera-Universitaria Careggi, 50139 Florence, Italy
| | - Letizia Canu
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, University of Florence, 50139 Florence, Italy
- Centro di Ricerca e Innovazione sulle Patologie Surrenaliche, AOU Careggi, 50139 Florence, Italy
- European Network for the Study of Adrenal Tumors (ENS@T) Center of Excellence, 50139 Florence, Italy
- Endocrinology Unit, Azienda Ospedaliera-Universitaria Careggi, 50139 Florence, Italy
- Correspondence:
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Salaverry LS, Lombardo T, Cabral-Lorenzo MC, Gil-Folgar ML, Rey-Roldán EB, Kornblihtt LI, Blanco GA. Metabolic plasticity in blast crisis-chronic myeloid leukaemia cells under hypoxia reduces the cytotoxic potency of drugs targeting mitochondria. Discov Oncol 2022; 13:60. [PMID: 35802257 PMCID: PMC9270554 DOI: 10.1007/s12672-022-00524-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/16/2022] [Indexed: 11/29/2022] Open
Abstract
Metabolic reprogramming (MR) influences progression of chronic myeloid leukaemia (CML) to blast crisis (BC), but metabolic programs may change transiently in a second dimension (metabolic plasticity, MP), driven by environments as hypoxia, affecting cytotoxic potency (CPot) of drugs targeting mitochondria or mitochondria-related cell stress responses (MRCSR) such as mitophagy and mitochondrial biogenesis. We assessed mitochondrial membrane potential (MMP), mitochondrial mass (MM), apoptosis, glucose uptake (GU), and CPot of arsenic trioxide (ATO), CCCP, valproic acid (VPA), vincristine (VCR), Mdivi1, and dichloroacetic acid (DCA) in CML BC cells K562 (BC-K562) under hypoxia through flow cytometry, and gene expression from GEO database. About 60% of untreated cells were killed after 72 h under hypoxia, but paradoxically, all drugs but ATO rescued cells and increased survival rates to almost 90%. Blocking mitophagy either with VCR or Mdivi1, or increasing mitochondrial biogenesis with VPA enhanced cell-survival with increased MM. DCA increased MM and rescued cells in spite of its role in activating pyruvate dehydrogenase and Krebs cycle. Cells rescued by DCA, VPA and CCCP showed decreased GU. ATO showed equal CPot in hypoxia and normoxia. MP was evidenced by differential expression of genes (DEG) under hypoxia related to Krebs cycle, lipid synthesis, cholesterol homeostasis, mitophagy, and mitochondrial biogenesis (GSE144527). A 25-gene MP-signature of BC-K562 cells under hypoxia identified BC cases among 113 transcriptomes from CML patients (GSE4170). We concluded that hypoxic environment drove a MP change evidenced by DEG that was reflected in a paradoxical pro-survival, instead of cytotoxic, effect of drugs targeting mitochondria and MRCSR.
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Affiliation(s)
- Luciana S Salaverry
- Department of Immunology IDEHU-CONICET, Faculty of Pharmacy and Biochemistry, University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Tomás Lombardo
- Laboratory of Immunotoxicology (LaITo), IDEHU-CONICET, Clinics Hospital, Jose de San Martin, University of Buenos Aires (UBA), Junin 956 4to piso, Capital Federal (1113), Buenos Aires, Argentina
| | - María C Cabral-Lorenzo
- Department of Pathology, Clinics Hospital, Jose de San Martin, University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Martin L Gil-Folgar
- Laboratory of Immunotoxicology (LaITo), IDEHU-CONICET, Clinics Hospital, Jose de San Martin, University of Buenos Aires (UBA), Junin 956 4to piso, Capital Federal (1113), Buenos Aires, Argentina
| | - Estela B Rey-Roldán
- Department of Immunology IDEHU-CONICET, Faculty of Pharmacy and Biochemistry, University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Laura I Kornblihtt
- Department of Hematology, Clinics Hospital, Jose de San Martin, University of Buenos Aires (UBA), Buenos Aires, Argentina
| | - Guillermo A Blanco
- Laboratory of Immunotoxicology (LaITo), IDEHU-CONICET, Clinics Hospital, Jose de San Martin, University of Buenos Aires (UBA), Junin 956 4to piso, Capital Federal (1113), Buenos Aires, Argentina.
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Silvano A, Menegazzi G, Peppicelli S, Mancini C, Biagioni A, Tubita A, Tusa I, Ruzzolini J, Lulli M, Rovida E, Dello Sbarba P. Lactate maintainsBCR/Abl expression and signalinginChronic Myeloid Leukemia cells under nutrient restriction. Oncol Res 2022; 29:33-46. [PMID: 35131002 PMCID: PMC9110649 DOI: 10.3727/096504022x16442289212164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
This study was directed to deepen the effects of nutrient shortage on BCR/Ablprotein expression and signaling in chronic myeloid leukemia (CML) cells. The backbone of the study was cell culture in medium lacking glucose, the consumption of which we had previously shown to drive BCR/Ablprotein suppression, and glutamine, the other main nutrient besides glucose. In this context, we focused on the role of lactate, the main by-product of glucose metabolism under conditions of rapid cell growth, in particular as a modulator of the maintenance of CML stem/progenitor cell potential, a crucial determinant of disease course and relapse of disease. The results obtained indicated that lactate is a powerful surrogate of glucose to prevent the suppression of BCR/Abl signaling and is therefore capable to maintain BCR/Abl-dependent CML stem/progenitor cell potential. A number of metabolism-related functional and phenotypical features of CML cells were also determined. Among these, we focused on the effect of lactate on oxygen consumption rate, the dependence of this effect on the cell surface lactate carrier MCT-1, and the relationship of the lactate effect to pyruvate and to the activity of mitochondrial pyruvate carrier.
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Affiliation(s)
- Angela Silvano
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy.,Department of Health Sciences, Division of Obstetrics and Gynecology, Careggi Hospital,Università degli Studi di Firenze; Florence, Italy
| | - Giulio Menegazzi
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Silvia Peppicelli
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Caterina Mancini
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Alessio Biagioni
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Alessandro Tubita
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Ignazia Tusa
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Jessica Ruzzolini
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Matteo Lulli
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Elisabetta Rovida
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences"Mario Serio",Careggi Hospital, Università degli Studi di Firenze; Florence, Italy
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Trinh A, Khamari R, Fovez Q, Mahon FX, Turcq B, Bouscary D, Maboudou P, Joncquel M, Coiteux V, Germain N, Laine W, Dekiouk S, Jean-Pierre S, Maguer-Satta V, Ghesquiere B, Idziorek T, Quesnel B, Kluza J, Marchetti P. Antimetabolic cooperativity with the clinically approved l-asparaginase and tyrosine kinase inhibitors to eradicate CML stem cells. Mol Metab 2021; 55:101410. [PMID: 34863941 PMCID: PMC8732793 DOI: 10.1016/j.molmet.2021.101410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 11/08/2021] [Accepted: 11/29/2021] [Indexed: 11/24/2022] Open
Abstract
Objective Long-term treatment with tyrosine kinase inhibitors (TKI) represents an effective cure for chronic myeloid leukemia (CML) patients and discontinuation of TKI therapy is now proposed to patient with deep molecular responses. However, evidence demonstrating that TKI are unable to fully eradicate dormant leukemic stem cells (LSC) indicate that new therapeutic strategies are needed to control LSC and to prevent relapse. In this study we investigated the metabolic pathways responsible for CML surviving to imatinib exposure and its potential therapeutic utility to improve the efficacy of TKI against stem-like CML cells. Methods Using complementary cell-based techniques, metabolism was characterized in a large panel of BCR-ABL+ cell lines as well as primary CD34+ stem-like cells from CML patients exposed to TKI and L-Asparaginases. Colony forming cell (CFC) assay and flow cytometry were used to identify CML progenitor and stem like-cells. Preclinical models of leukemia dormancy were used to test the effect of treatments. Results Although TKI suppressed glycolysis, compensatory glutamine-dependent mitochondrial oxidation supported ATP synthesis and CML cell survival. Glutamine metabolism was inhibited by L-asparaginases such as Kidrolase or Erwinase without inducing predominant CML cell death. However, clinically relevant concentrations of TKI render CML cells susceptible to Kidrolase. The combination of TKI with Lasparaginase reactivates the intinsic apoptotic pathway leading to efficient CML cell death. Conclusion Targeting glutamine metabolism with the FDA-approved drug, Kidrolase in combination with TKI that suppress glycolysis represents an effective and widely applicable therapeutic strategy for eradicating stem-like CML cells.
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Affiliation(s)
- Anne Trinh
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - Raeeka Khamari
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - Quentin Fovez
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - François-Xavier Mahon
- Institut Bergonié, Université de Bordeaux, CNRS SNC5010, Inserm, U1218 ACTION, F - 33076, Bordeaux, France
| | - Béatrice Turcq
- Institut Bergonié, Université de Bordeaux, CNRS SNC5010, Inserm, U1218 ACTION, F - 33076, Bordeaux, France
| | - Didier Bouscary
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris, France; Assistance Publique-Hôpitaux de Paris. Centre-Université de Paris, Service d'Hématologie clinique, Hôpital Cochin, Paris, France
| | | | - Marie Joncquel
- Centre de Bio-Pathologie, Banque de Tissus, CHU Lille, France
| | - Valérie Coiteux
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - Nicolas Germain
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - William Laine
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - Salim Dekiouk
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - Sandrine Jean-Pierre
- Centre de Recherche en Cancérologie de Lyon, Inserm U1052, CNRS UMR5286, Centre Léon Bérard, 69008, Lyon, France
| | | | | | - Thierry Idziorek
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - Bruno Quesnel
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France
| | - Jerome Kluza
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France.
| | - Philippe Marchetti
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut de Recherche contre le Cancer de Lille, UMR9020 - UMR-S 1277 - Canther - Cancer Heterogeneity, Plasticity and Resistance to Therapies, F-59000, Lille, France; Centre de Bio-Pathologie, Banque de Tissus, CHU Lille, France.
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7
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Abdel Hadi N, Boet E, Lahalle A, Lauture L, Refeyton A, Reyes-Castellanos G, Caplet N, Carrier A, Le Cam L, Mazure NM, Ricci JE, Rocchi S, Sarry JE, Vasseur S, Vlaski-Lafarge M, Rossignol R, Bost F. Meeting report of the 4th biennial Metabolism and Cancer symposium. FEBS J 2021; 289:5516-5526. [PMID: 34817127 DOI: 10.1111/febs.16295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/18/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022]
Abstract
The 4th International meeting Metabolism and Cancer initially programed to take place in Bordeaux (France) was held virtually on May 27-29, 2021. The three-day event was followed by around 600 participants daily from 47 countries around the world. The meeting hosted 21 speakers including selected talks and a keynote lecture from the Nobel Prize winner Sir Peter J. Ratcliffe (Oxford, UK). Presentations and discussions were divided in four scientific sessions: (a) Redox and energy metabolism (b) Redox and hypoxia (c) Metabolic profiling and epigenetic control and (d) Signalling, fuelling and metabolism in cancer and a general public session on cancer and nutrition. This report summarises the presentations and outcomes of the 4th annual Metabolism and Cancer symposium. We provide here a summary of the scientific highlights of this exciting meeting.
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Affiliation(s)
- Nadine Abdel Hadi
- Centre de Recherche en Cancérologie de Marseille (CRCM), Unité 1068, Institut National de la Santé et de la Recherche Médicale, Institut Paoli-Calmettes (IPC), Unité Mixte de Recherche (UMR 7258), Centre National de la Recherche Scientifique (CNRS), Université Aix-Marseille, Marseille, France
| | - Emeline Boet
- Centre de Recherches en Cancérologie de Toulouse, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherché Médicale, Université de Toulouse, Toulouse, France.,Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Airelle Lahalle
- Institut de Recherche en Cancérologie de Montpellier, Institut Régional du Cancer de Montpellier, INSERM, Université de Montpellier, Montpellier, France.,Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | - Laura Lauture
- Centre de Recherches en Cancérologie de Toulouse, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherché Médicale, Université de Toulouse, Toulouse, France.,Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Alice Refeyton
- Département de Recherche, Etablissement Français du Sang Nouvelle Aquitaine, Unité 1035 Inserm, Bordeaux, France
| | - Gabriela Reyes-Castellanos
- Centre de Recherche en Cancérologie de Marseille (CRCM), Unité 1068, Institut National de la Santé et de la Recherche Médicale, Institut Paoli-Calmettes (IPC), Unité Mixte de Recherche (UMR 7258), Centre National de la Recherche Scientifique (CNRS), Université Aix-Marseille, Marseille, France
| | - Nathalie Caplet
- BRIO (Bordeaux Recherche Intégrée en Oncologie), Bordeaux, France
| | - Alice Carrier
- Centre de Recherche en Cancérologie de Marseille (CRCM), Unité 1068, Institut National de la Santé et de la Recherche Médicale, Institut Paoli-Calmettes (IPC), Unité Mixte de Recherche (UMR 7258), Centre National de la Recherche Scientifique (CNRS), Université Aix-Marseille, Marseille, France
| | - Laurent Le Cam
- Institut de Recherche en Cancérologie de Montpellier, Institut Régional du Cancer de Montpellier, INSERM, Université de Montpellier, Montpellier, France.,Equipe Labellisée Ligue Contre le Cancer, Paris, France
| | | | - Jean-Ehrland Ricci
- INSERM U1065, C3M, Université Côte d'Azur (UCA), Nice, France.,Equipe labellisée Ligue Contre le Cancer, Nice, France
| | - Stéphane Rocchi
- INSERM U1065, C3M, Université Côte d'Azur (UCA), Nice, France
| | - Jean-Emmanuel Sarry
- Centre de Recherches en Cancérologie de Toulouse, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherché Médicale, Université de Toulouse, Toulouse, France.,Equipe Labellisée Ligue Nationale Contre le Cancer 2018, Toulouse, France
| | - Sophie Vasseur
- Centre de Recherche en Cancérologie de Marseille (CRCM), Unité 1068, Institut National de la Santé et de la Recherche Médicale, Institut Paoli-Calmettes (IPC), Unité Mixte de Recherche (UMR 7258), Centre National de la Recherche Scientifique (CNRS), Université Aix-Marseille, Marseille, France
| | - Marija Vlaski-Lafarge
- Département de Recherche, Etablissement Français du Sang Nouvelle Aquitaine, Unité 1035 Inserm, Bordeaux, France
| | | | - Frédéric Bost
- INSERM U1065, C3M, Université Côte d'Azur (UCA), Nice, France
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8
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Poteti M, Menegazzi G, Peppicelli S, Tusa I, Cheloni G, Silvano A, Mancini C, Biagioni A, Tubita A, Mazure NM, Lulli M, Rovida E, Dello Sbarba P. Glutamine Availability Controls BCR/Abl Protein Expression and Functional Phenotype of Chronic Myeloid Leukemia Cells Endowed with Stem/Progenitor Cell Potential. Cancers (Basel) 2021; 13:cancers13174372. [PMID: 34503182 PMCID: PMC8430815 DOI: 10.3390/cancers13174372] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/22/2021] [Accepted: 08/27/2021] [Indexed: 12/28/2022] Open
Abstract
Simple Summary In chronic myeloid leukemia (CML), a neoplasm brilliantly taken care of by a molecularly targeted therapeutic approach, the achievement of cure is nevertheless prevented by the maintenance of a small subset of treatment-resistant leukemia stem cells (LSCs), sustaining the so-called minimal residual disease of CML. The phenotypical and functional characterization of this LSC subset is, therefore, crucial to aim at the eradication of disease. Such a characterization includes the acquisition of information relative to the metabolic profile of treatment-resistant LSCs, which is functional to their maintenance in bone marrow. A number of metabolic features of LSCs were shown to determine their sensitivity or resistance to therapy. Glutamine metabolism emerged from this study as a potential target to overcome the persistence of therapy-resistant LSCs. Abstract This study was directed to characterize the role of glutamine in the modulation of the response of chronic myeloid leukemia (CML) cells to low oxygen, a main condition of hematopoietic stem cell niches of bone marrow. Cells were incubated in atmosphere at 0.2% oxygen in the absence or the presence of glutamine. The absence of glutamine markedly delayed glucose consumption, which had previously been shown to drive the suppression of BCR/Abl oncoprotein (but not of the fusion oncogene BCR/abl) in low oxygen. Glutamine availability thus emerged as a key regulator of the balance between the pools of BCR/Abl protein-expressing and -negative CML cells endowed with stem/progenitor cell potential and capable to stand extremely low oxygen. These findings were confirmed by the effects of the inhibitors of glucose or glutamine metabolism. The BCR/Abl-negative cell phenotype is the best candidate to sustain the treatment-resistant minimal residual disease (MRD) of CML because these cells are devoid of the molecular target of the BCR/Abl-active tyrosine kinase inhibitors (TKi) used for CML therapy. Therefore, the treatments capable of interfering with glutamine action may result in the reduction in the BCR/Abl-negative cell subset sustaining MRD and in the concomitant rescue of the TKi sensitivity of CML stem cell potential. The data obtained with glutaminase inhibitors seem to confirm this perspective.
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Affiliation(s)
- Martina Poteti
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Giulio Menegazzi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Silvia Peppicelli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Ignazia Tusa
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Giulia Cheloni
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
- Beth Israel Deaconess Medical Center, Department of Medicine, Division of Genetics, Harvard University Medical School, 330 Brookline Avenue, Boston, MA 02215, USA
| | - Angela Silvano
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Caterina Mancini
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Alessio Biagioni
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Alessandro Tubita
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Nathalie M. Mazure
- Mediterranean Centre for Molecular Medicine-INSERM U1065, University of Nice-Sophia-Antipolis, 151 Route Saint Antoine de Ginestière, 06204 Nice, France;
| | - Matteo Lulli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
| | - Elisabetta Rovida
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
- Correspondence: (E.R.); (P.D.S.)
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale G.B. Morgagni 50, 50134 Firenze, Italy; (M.P.); (G.M.); (S.P.); (I.T.); (G.C.); (A.S.); (C.M.); (A.B.); (A.T.); (M.L.)
- Correspondence: (E.R.); (P.D.S.)
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9
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Clapper E, Di Trapani G, Tonissen KF. The regulation of bcr-abl in hypoxia is through the mTOR pathway. Leuk Lymphoma 2020; 62:967-978. [PMID: 33251904 DOI: 10.1080/10428194.2020.1849679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Chronic myeloid leukemia (CML) is usually characterized by the formation of the fusion onco-protein bcr-abl. Therefore, the majority of CML treatments are bcr-abl specific tyrosine kinase inhibitors (TKIs). TKI resistance in CML treatment is becoming a major obstacle in managing this disease. One well-studied form of drug resistance is hypoxia-induced drug resistance, a phenomenon observed in many other cancers. This study aimed to determine the efficacy of TKIs in CML cells cultured in hypoxia. It was observed that bcr-abl translation was severely halted in hypoxia, rendering TKIs ineffective. We found that the mechanism by which bcr-abl protein levels were being suppressed in hypoxia was through the mTOR pathway, specifically via ribosomal protein S6 (RPS6). This information is vital to the improvement of CML treatments, as it can be used to determine how to best combat hypoxia-induced drug resistance in CML and subsequently to identify new targets for treatment.
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Affiliation(s)
- Erin Clapper
- School of Environment and Science, Griffith University, Nathan, Australia.,Griffith Institute for Drug Discovery, Griffith University, Nathan, Australia
| | | | - Kathryn F Tonissen
- School of Environment and Science, Griffith University, Nathan, Australia.,Griffith Institute for Drug Discovery, Griffith University, Nathan, Australia
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10
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Tusa I, Cheloni G, Poteti M, Silvano A, Tubita A, Lombardi Z, Gozzini A, Caporale R, Scappini B, Dello Sbarba P, Rovida E. In Vitro Comparison of the Effects of Imatinib and Ponatinib on Chronic Myeloid Leukemia Progenitor/Stem Cell Features. Target Oncol 2020; 15:659-671. [PMID: 32780298 PMCID: PMC7568716 DOI: 10.1007/s11523-020-00741-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background The development of molecularly tailored therapeutic agents such as the BCR/ABL-active tyrosine kinase inhibitors (TKi) resulted in an excellent treatment option for chronic myeloid leukemia (CML) patients. However, following TKi discontinuation, disease relapses in 40–60% of patients, an occurrence very likely due to the persistence of leukemic stem cells that are scarcely sensitive to TKi. Nevertheless, TKi are still the only current treatment option for CML patients. Objective The aim of this study was to compare the effects of TKi belonging to different generations, imatinib and ponatinib (first and third generation, respectively), on progenitor/stem cell expansion potential and markers. Patients and Methods We used stabilized CML cell lines (KCL22, K562 and LAMA-84 cells), taking advantage of the previous demonstration of ours that cell lines contain cell subsets endowed with progenitor/stem cell properties. Primary cells explanted from CML patients were also used. The effects of TKi on the expression of stem cell related genes were compared by quantitative PCR. Flow cytometry was performed to evaluate aldehyde-dehydrogenase (ALDH) activity and the expression of cluster of differentiation (CD) cell surface hematopoietic stem cell markers. Progenitor/stem cell potential was estimated by serial colony formation ability (CFA) assay. Results Ponatinib was more effective than imatinib for the reduction of cells with ALDH activity and progenitor/stem cell potential of CML patient-derived cells and cell lines. Furthermore, ponatinib was more effective than imatinib in reducing the percentage of CD26-expressing cells in primary CML cells, whereas imatinib and ponatinib showed similar efficacy on KCL22 cells. Both drugs strongly upregulated NANOG and SOX2 in CML cell lines, but in KCL22 cells this upregulation was significantly lower with ponatinib than with imatinib, an outcome compatible with a lower level of enrichment of the stem cell compartment upon ponatinib treatment. Conclusion Ponatinib seems to target CML progenitor/stem cells better than imatinib. Electronic supplementary material The online version of this article (10.1007/s11523-020-00741-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ignazia Tusa
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy
| | - Giulia Cheloni
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy
| | - Martina Poteti
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy
| | - Angela Silvano
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy
| | - Alessandro Tubita
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy
| | - Zoe Lombardi
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy
| | | | - Roberto Caporale
- Dipartimento DAI Oncologico e di Chirurgia ad Indirizzo Robotico SOD Centro Diagnostico di Citofluorimetria e Immunoterapia, AOU Careggi, Florence, Italy
| | | | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy.
| | - Elisabetta Rovida
- Department of Experimental and Clinical Biomedical Science, University of Florence, Viale GB Morgagni 50, 50134, Florence, Italy.
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11
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Tissue "Hypoxia" and the Maintenance of Leukemia Stem Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1143:129-145. [PMID: 31338818 DOI: 10.1007/978-981-13-7342-8_6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The relationship of the homing of normal hematopoietic stem cells (HSC) in the bone marrow to specific environmental conditions, referred to as the stem cell niche (SCN), has been intensively studied over the last three decades. These conditions include the action of a number of molecular and cellular players, as well as critical levels of nutrients, oxygen and glucose in particular, involved in energy production. These factors are likely to act also in leukemias, due to the strict analogy between the hierarchical structure of normal hematopoietic cell populations and that of leukemia cell populations. This led to propose that leukemic growth is fostered by cells endowed with stem cell properties, the leukemia stem cells (LSC), a concept readily extended to comprise the cancer stem cells (CSC) of solid tumors. Two alternative routes have been proposed for CSC generation, that is, the oncogenic staminalization (acquisition of self-renewal) of a normal progenitor cell (the "CSC in normal progenitor cell" model) and the oncogenic transformation of a normal (self-renewing) stem cell (the "CSC in normal stem cell" model). The latter mechanism, in the hematological context, makes LSC derive from HSC, suggesting that LSC share SCN homing with HSC. This chapter is focused on the availability of oxygen and glucose in the regulation of LSC maintenance within the SCN. In this respect, the most critical aspect in view of the outcome of therapy is the long-term maintenance of the LSC subset capable to sustain minimal residual disease and the related risk of relapse of disease.
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12
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Sensitivity to imatinib of KCL22 chronic myeloid leukemia cell survival/growth and stem cell potential under glucose shortage. Data Brief 2018; 20:1901-1904. [PMID: 30294641 PMCID: PMC6168789 DOI: 10.1016/j.dib.2018.09.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 07/25/2018] [Accepted: 09/17/2018] [Indexed: 11/21/2022] Open
Abstract
The data presented here are related to the original research article entitled “Imatinib enhances the maintenance of Chronic Myeloid Leukemia (CML) stem cell potential in the absence of glucose” (Bono et al., 2018). The sensitivity to the tyrosine kinase inhibitor imatinib-mesylate (IM) of KCL22 CML cells cultured under glucose shortage have been determined by scoring cell survival/growth via trypan blue exclusion and stem cell potential via Culture Repopulation Ability (CRA) assay. Discussion of the data can be found in Bono et al. (2018).
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13
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Tusa I, Cheloni G, Poteti M, Gozzini A, DeSouza NH, Shan Y, Deng X, Gray NS, Li S, Rovida E, Dello Sbarba P. Targeting the Extracellular Signal-Regulated Kinase 5 Pathway to Suppress Human Chronic Myeloid Leukemia Stem Cells. Stem Cell Reports 2018; 11:929-943. [PMID: 30245209 PMCID: PMC6178886 DOI: 10.1016/j.stemcr.2018.08.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 08/22/2018] [Accepted: 08/22/2018] [Indexed: 12/20/2022] Open
Abstract
Tyrosine kinase inhibitors (TKi) are effective against chronic myeloid leukemia (CML), but their inefficacy on leukemia stem cells (LSCs) may lead to relapse. To identify new druggable targets alternative to BCR/ABL, we investigated the role of the MEK5/ERK5 pathway in LSC maintenance in low oxygen, a feature of bone marrow stem cell niches. We found that MEK5/ERK5 pathway inhibition reduced the growth of CML patient-derived cells and cell lines in vitro and the number of leukemic cells in vivo. Treatment in vitro of primary CML cells with MEK5/ERK5 inhibitors, but not TKi, strikingly reduced culture repopulation ability (CRA), serial colony formation ability, long-term culture-initiating cells (LTC-ICs), and CD26-expressing cells. Importantly, MEK5/ERK5 inhibition was effective on CML cells regardless of the presence or absence of imatinib, and did not reduce CRA or LTC-ICs of normal CD34+ cells. Thus, targeting MEK/ERK5 may represent an innovative therapeutic approach to suppress CML progenitor/stem cells. ERK5 is constitutively active in chronic myeloid leukemia (CML) cells ERK5 pathway inhibition reduces the growth of CML cells in vitro and in vivo ERK5 pathway inhibition strikingly reduces CML progenitor/stem cell maintenance The combination of ERK5i with imatinib reduces the expression of stem cell proteins
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Affiliation(s)
- Ignazia Tusa
- Department of Experimental and Clinical Biomedical Sciences, Università degli Studi di Firenze, viale G.B. Morgagni, 50, Firenze 50134, Italy; Istituto Toscano Tumori (ITT), Firenze 50134, Italy
| | - Giulia Cheloni
- Department of Experimental and Clinical Biomedical Sciences, Università degli Studi di Firenze, viale G.B. Morgagni, 50, Firenze 50134, Italy; Istituto Toscano Tumori (ITT), Firenze 50134, Italy
| | - Martina Poteti
- Department of Experimental and Clinical Biomedical Sciences, Università degli Studi di Firenze, viale G.B. Morgagni, 50, Firenze 50134, Italy
| | - Antonella Gozzini
- Hematology Unit, Careggi University Hospital (AOUC), Firenze 50134, Italy
| | - Ngoc Ho DeSouza
- Department of Medicine, University of Massachusetts, Worcester, MA 01605, USA
| | - Yi Shan
- Department of Medicine, University of Massachusetts, Worcester, MA 01605, USA
| | - Xianming Deng
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Nathanael S Gray
- Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Shaoguang Li
- Department of Medicine, University of Massachusetts, Worcester, MA 01605, USA
| | - Elisabetta Rovida
- Department of Experimental and Clinical Biomedical Sciences, Università degli Studi di Firenze, viale G.B. Morgagni, 50, Firenze 50134, Italy; Istituto Toscano Tumori (ITT), Firenze 50134, Italy.
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences, Università degli Studi di Firenze, viale G.B. Morgagni, 50, Firenze 50134, Italy; Istituto Toscano Tumori (ITT), Firenze 50134, Italy.
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14
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Irigoyen M, García-Ruiz JC, Berra E. The hypoxia signalling pathway in haematological malignancies. Oncotarget 2018; 8:36832-36844. [PMID: 28415662 PMCID: PMC5482702 DOI: 10.18632/oncotarget.15981] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/27/2017] [Indexed: 12/25/2022] Open
Abstract
Haematological malignancies are tumours that affect the haematopoietic and the lymphatic systems. Despite the huge efforts to eradicate these tumours, the percentage of patients suffering resistance to therapies and relapse still remains significant. The tumour environment favours drug resistance of cancer cells, and particularly of cancer stem/initiating cells. Hypoxia promotes aggressiveness, metastatic spread and relapse in most of the solid tumours. Furthermore, hypoxia is associated with worse prognosis and resistance to conventional treatments through activation of the hypoxia-inducible factors. Haematological malignancies are not considered solid tumours, and therefore, the role of hypoxia in these diseases was initially presumed to be inconsequential. However, hypoxia is a hallmark of the haematopoietic niche. Here, we will review the current understanding of the role of both hypoxia and hypoxia-inducible factors in different haematological tumours.
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Affiliation(s)
- Marta Irigoyen
- Centro de Investigación Cooperativa en Biociencias CIC bioGUNE, Derio, Spain
| | - Juan Carlos García-Ruiz
- Servicio de Hematología y Hemoterapia, BioCruces Health Research Institute, Hospital Universitario Cruces, Spain
| | - Edurne Berra
- Centro de Investigación Cooperativa en Biociencias CIC bioGUNE, Derio, Spain
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15
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Bono S, Lulli M, D'Agostino VG, Di Gesualdo F, Loffredo R, Cipolleschi MG, Provenzani A, Rovida E, Dello Sbarba P. Different BCR/Abl protein suppression patterns as a converging trait of chronic myeloid leukemia cell adaptation to energy restriction. Oncotarget 2018; 7:84810-84825. [PMID: 27852045 PMCID: PMC5356700 DOI: 10.18632/oncotarget.13319] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 10/28/2016] [Indexed: 02/07/2023] Open
Abstract
BCR/Abl protein drives the onset and progression of Chronic Myeloid Leukemia (CML). We previously showed that BCR/Abl protein is suppressed in low oxygen, where viable cells retain stem cell potential. This study addressed the regulation of BCR/Abl protein expression under oxygen or glucose shortage, characteristic of the in vivo environment where cells resistant to tyrosine kinase inhibitors (TKi) persist. We investigated, at transcriptional, translational and post-translational level, the mechanisms involved in BCR/Abl suppression in K562 and KCL22 CML cells. BCR/abl mRNA steady-state analysis and ChIP-qPCR on BCR promoter revealed that BCR/abl transcriptional activity is reduced in K562 cells under oxygen shortage. The SUnSET assay showed an overall reduction of protein synthesis under oxygen/glucose shortage in both cell lines. However, only low oxygen decreased polysome-associated BCR/abl mRNA significantly in KCL22 cells, suggesting a decreased BCR/Abl translation. The proteasome inhibitor MG132 or the pan-caspase inhibitor z-VAD-fmk extended BCR/Abl expression under oxygen/glucose shortage in K562 cells. Glucose shortage induced autophagy-dependent BCR/Abl protein degradation in KCL22 cells. Overall, our results showed that energy restriction induces different cell-specific BCR/Abl protein suppression patterns, which represent a converging route to TKi-resistance of CML cells. Thus, the interference with BCR/Abl expression in environment-adapted CML cells may become a useful implement to current therapy.
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Affiliation(s)
- Silvia Bono
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy
| | - Matteo Lulli
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy
| | | | - Federico Di Gesualdo
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy
| | - Rosa Loffredo
- Centre For Integrative Biology (CIBIO), Università degli Studi di Trento, Trento, Italy
| | - Maria Grazia Cipolleschi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy
| | - Alessandro Provenzani
- Centre For Integrative Biology (CIBIO), Università degli Studi di Trento, Trento, Italy
| | - Elisabetta Rovida
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy
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16
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Borriello A, Caldarelli I, Bencivenga D, Stampone E, Perrotta S, Oliva A, Della Ragione F. Tyrosine kinase inhibitors and mesenchymal stromal cells: effects on self-renewal, commitment and functions. Oncotarget 2018; 8:5540-5565. [PMID: 27750212 PMCID: PMC5354929 DOI: 10.18632/oncotarget.12649] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/04/2016] [Indexed: 12/18/2022] Open
Abstract
The hope of selectively targeting cancer cells by therapy and eradicating definitively malignancies is based on the identification of pathways or metabolisms that clearly distinguish “normal” from “transformed” phenotypes. Some tyrosine kinase activities, specifically unregulated and potently activated in malignant cells, might represent important targets of therapy. Consequently, tyrosine kinase inhibitors (TKIs) might be thought as the “vanguard” of molecularly targeted therapy for human neoplasias. Imatinib and the successive generations of inhibitors of Bcr-Abl1 kinase, represent the major successful examples of TKI use in cancer treatment. Other tyrosine kinases have been selected as targets of therapy, but the efficacy of their inhibition, although evident, is less definite. Two major negative effects exist in this therapeutic strategy and are linked to the specificity of the drugs and to the role of the targeted kinase in non-malignant cells. In this review, we will discuss the data available on the TKIs effects on the metabolism and functions of mesenchymal stromal cells (MSCs). MSCs are widely distributed in human tissues and play key physiological roles; nevertheless, they might be responsible for important pathologies. At present, bone marrow (BM) MSCs have been studied in greater detail, for both embryological origins and functions. The available data are evocative of an unexpected degree of complexity and heterogeneity of BM-MSCs. It is conceivable that this grade of intricacy occurs also in MSCs of other organs. Therefore, in perspective, the negative effects of TKIs on MSCs might represent a critical problem in long-term cancer therapies based on such inhibitors.
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Affiliation(s)
- Adriana Borriello
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Ilaria Caldarelli
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Debora Bencivenga
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Emanuela Stampone
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Silverio Perrotta
- Department of Woman, Child and of General and Specialized Surgery, Second University of Naples, Naples, Italy
| | - Adriana Oliva
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
| | - Fulvio Della Ragione
- Department of Biochemistry, Biophysics and General Pathology, Second University of Naples, Naples, Italy
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17
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Masala E, Valencia-Martinez A, Pillozzi S, Rondelli T, Brogi A, Sanna A, Gozzini A, Arcangeli A, Sbarba PD, Santini V. Severe hypoxia selects hematopoietic progenitors with stem cell potential from primary Myelodysplastic syndrome bone marrow cell cultures. Oncotarget 2018; 9:10561-10571. [PMID: 29535827 PMCID: PMC5828219 DOI: 10.18632/oncotarget.24302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 01/13/2018] [Indexed: 01/28/2023] Open
Abstract
Myelodysplastic Syndromes (MDS) are clonal neoplasms where stem/progenitor cells endowed with self-renewal and capable of perpetuating the disease have been demonstrated. It is known that oxygen tension plays a key role in driving normal hematopoiesis and that hematopoietic stem cells are maintained in hypoxic areas of the bone marrow (BM). Hypoxia could also regulate leukemic/dysplastic hematopoiesis. We evaluated the stem cell potential of MDS cells derived from the BM of 39 MDS patients and selected under severe hypoxia. MDS cells rescued from hypoxia-incubated cultures were subjected to stem and progenitor cell assays in vitro, as well as to hematopoietic reconstitution assay in NOD-SCID mice. Incubation in severe hypoxia of cells explanted from MDS patients selected a cell subset endowed with stem cell potential, as determined in vitro. This occurred only from the BM of patients classified as IPSS low/INT-1 risk. Transplantation into NOD-SCID mice confirmed using an in vivo model that severe hypoxia selects a cell subset endowed with stem cell potential from bone marrow mononuclear cells (BMMC). derived from patients belonging to the IPSS low/int-1 risk group. Data here reported show that cells endowed with stem cell potential and capable of adapting to hypoxia and escaping hypoxia-induced apoptosis exist within MDS cell populations.
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Affiliation(s)
- Erico Masala
- MDS UNIT, Hematology, AOU-Careggi University Hospital, Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | - Ana Valencia-Martinez
- MDS UNIT, Hematology, AOU-Careggi University Hospital, Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | - Serena Pillozzi
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | | | - Alice Brogi
- MDS UNIT, Hematology, AOU-Careggi University Hospital, Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
- Department of Medical Biotechnologies, Università degli Studi di Siena, Siena, Italy
| | - Alessandro Sanna
- MDS UNIT, Hematology, AOU-Careggi University Hospital, Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | - Antonella Gozzini
- Cellular Therapy and Transfusional Medicine Unit, Hematology, AOU-Careggi University Hospital, Florence, Italy
| | - Annarosa Arcangeli
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Università degli Studi di Firenze, Florence, Italy
| | - Valeria Santini
- MDS UNIT, Hematology, AOU-Careggi University Hospital, Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
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18
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Bono S, Dello Sbarba P, Lulli M. Imatinib-mesylate enhances the maintenance of chronic myeloid leukemia stem cell potential in the absence of glucose. Stem Cell Res 2018; 28:33-38. [PMID: 29414416 DOI: 10.1016/j.scr.2018.01.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 01/29/2018] [Accepted: 01/29/2018] [Indexed: 10/18/2022] Open
Abstract
The introduction of BCR/Abl tyrosine kinase inhibitors (TKI), such as imatinib-mesylate (IM), has revolutioned the treatment of chronic myeloid leukemia (CML). However, although extremely effective in inducing CML remission, IM is unable to eliminate leukemia stem cells (LSC). This is largely due to the suppression of BCR/Abl protein, driven by the reduction of energy supply due to oxygen or glucose shortage, in stem cell niches of bone marrow. Here, we investigated whether, in K562 and KCL22 CML cell cultures, glucose shortage induces refractoriness of stem cell potential to IM. In the absence of glucose, IM, while maintaining its detrimental effect on CML cell bulk, actually enhanced colony formation ability and stem cell potential. This was paralleled by an increased expression of the Nanog and Sox-2 stem cell markers. These evidences stress further the importance of developing strategies alternative to TKI capable to target LSC of CML.
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Affiliation(s)
- Silvia Bono
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy; Istituto Toscano Tumori, Florence, Italy
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy; Istituto Toscano Tumori, Florence, Italy.
| | - Matteo Lulli
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze, Florence, Italy; Istituto Toscano Tumori, Florence, Italy.
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19
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The Culture Repopulation Ability (CRA) Assay and Incubation in Low Oxygen to Test Antileukemic Drugs on Imatinib-Resistant CML Stem-Like Cells. Methods Mol Biol 2018; 1465:73-85. [PMID: 27581140 DOI: 10.1007/978-1-4939-4011-0_7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
Chronic myeloid leukemia (CML) is a stem cell-driven disorder caused by the BCR/Abl oncoprotein, a constitutively active tyrosine kinase (TK). Chronic-phase CML patients are treated with impressive efficacy with TK inhibitors (TKi) such as imatinib mesylate (IM). However, rather than definitively curing CML, TKi induces a state of minimal residual disease, due to the persistence of leukemia stem cells (LSC) which are insensitive to this class of drugs. LSC persistence may be due to different reasons, including the suppression of BCR/Abl oncoprotein. It has been shown that this suppression follows incubation in low oxygen under appropriate culture conditions and incubation times.Here we describe the culture repopulation ability (CRA) assay, a non-clonogenic assay capable - together with incubation in low oxygen - to reveal in vitro stem cells endowed with marrow repopulation ability (MRA) in vivo. The CRA assay can be used, before moving to animal tests, as a simple and reliable method for the prescreening of drugs potentially active on CML and other leukemias with respect to their activity on the more immature leukemia cell subsets.
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20
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Nicolini A, Ferrari P, Diodati L, Carpi A. Recent Advances in Comprehending the Signaling Pathways Involved in the Progression of Breast Cancer. Int J Mol Sci 2017; 18:E2321. [PMID: 29099748 PMCID: PMC5713290 DOI: 10.3390/ijms18112321] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 12/11/2022] Open
Abstract
This review describes recent advances in the comprehension of signaling pathways involved in breast cancer progression. Calcium sensing receptor (CaSR), caveolae signaling, signaling referred to hypoxia-inducing factors and disturbances in the apoptotic machinery are related to more general biological mechanisms and are considered first. The others refer to signaling pathways of more specific biological mechanisms, namely the heparin/heparin-sulfate interactome, over-expression of miRNA-378a-5p, restriction of luminal and basal epithelial cells, fatty-acid synthesis, molecular pathways related to epithelial to mesenchimal transition (EMT), HER-2/neu gene amplification and protein expression, and the expression of other members of the epithelial growth factor receptor family. This progress in basic research is fundamental to foster the ongoing efforts that use the new genotyping technologies, and aim at defining new prognostic and predictive biomarkers for a better personalized management of breast cancer disease.
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Affiliation(s)
- Andrea Nicolini
- Department of Oncology, Transplantations and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy.
| | - Paola Ferrari
- Department of Oncology, Transplantations and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy.
| | - Lucrezia Diodati
- Department of Oncology, Transplantations and New Technologies in Medicine, University of Pisa, 56126 Pisa, Italy.
| | - Angelo Carpi
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy.
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21
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Ianniciello A, Dumas PY, Drullion C, Guitart A, Villacreces A, Peytour Y, Chevaleyre J, Brunet de la Grange P, Vigon I, Desplat V, Priault M, Sbarba PD, Ivanovic Z, Mahon FX, Pasquet JM. Chronic myeloid leukemia progenitor cells require autophagy when leaving hypoxia-induced quiescence. Oncotarget 2017; 8:96984-96992. [PMID: 29228587 PMCID: PMC5722539 DOI: 10.18632/oncotarget.18904] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 06/17/2017] [Indexed: 12/15/2022] Open
Abstract
Albeit tyrosine kinase inhibitors anti-Abl used in Chronic Myeloid Leukemia (CML) block the deregulated activity of the Bcr-Abl tyrosine kinase and induce remission in 90% of patients, they do not eradicate immature hematopoietic compartments of leukemic stem cells. To elucidate if autophagy is important for stem cell survival and/or proliferation, we used culture in low oxygen concentration (0.1% O2 for 7 days) followed back by non-restricted O2 supply (normoxic culture) to mimic stem cell proliferation and commitment. Knockdown of Atg7 expression, a key player in autophagy, in K562 cell line inhibited autophagy compared to control cells. Upon 7 days at 0.1% O2 both K562 and K562 shATG7 cells stopped to proliferate and a similar amount of viable cells remained. Back to non-restricted O2 supply K562 cells proliferate whereas K562 shATG7 cells exhibited strong apoptosis. Using immunomagnetic sorted normal and CML CD34+ cells, we inhibited the autophagic process by lentiviral infection expressing shATG7 or using a Vps34 inhibitor. Both, normal and CML CD34+ cells either competent or deficient for autophagy stopped to proliferate in hypoxia. Surprisingly, while normal CD34+ cells proliferate back to non restricted O2 supply, the CML CD34+ cells deficient for autophagy failed to proliferate. All together, these results suggest that autophagy is required for CML CD34+ commitment while it is dispensable for normal CD34 cells.
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Affiliation(s)
- Angela Ianniciello
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Pierre-Yves Dumas
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Claire Drullion
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Amélie Guitart
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Arnaud Villacreces
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Yan Peytour
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Jean Chevaleyre
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France.,Etablissement Français du Sang Aquitaine-Limousin, 33075 Bordeaux, France
| | - Philippe Brunet de la Grange
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France.,Etablissement Français du Sang Aquitaine-Limousin, 33075 Bordeaux, France
| | - Isabelle Vigon
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Vanessa Desplat
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
| | - Muriel Priault
- UMR CNRS 5095, I.B.G.C, Université de Bordeaux, 33077 Bordeaux Cedex, France
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences, Università degli Studi di Firenze, 50134 Firenze, Italia
| | - Zoran Ivanovic
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France.,Etablissement Français du Sang Aquitaine-Limousin, 33075 Bordeaux, France
| | | | - Jean-Max Pasquet
- Cellules Souches Hématopoïétiques Normales et Leucémiques, INSERM U1035 BMGIC, Université de Bordeaux, 33076 Bordeaux Cedex, France
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22
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The Leukemic Stem Cell Niche: Adaptation to "Hypoxia" versus Oncogene Addiction. Stem Cells Int 2017; 2017:4979474. [PMID: 29118813 PMCID: PMC5651121 DOI: 10.1155/2017/4979474] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 04/05/2017] [Indexed: 02/08/2023] Open
Abstract
Previous studies based on low oxygen concentrations in the incubation atmosphere revealed that metabolic factors govern the maintenance of normal hematopoietic or leukemic stem cells (HSC and LSC). The physiological oxygen concentration in tissues ranges between 0.1 and 5.0%. Stem cell niches (SCN) are placed in tissue areas at the lower end of this range (“hypoxic” SCN), to which stem cells are metabolically adapted and where they are selectively hosted. The data reported here indicated that driver oncogenic proteins of several leukemias are suppressed following cell incubation at oxygen concentration compatible with SCN physiology. This suppression is likely to represent a key positive regulator of LSC survival and maintenance (self-renewal) within the SCN. On the other hand, LSC committed to differentiation, unable to stand suppression because of addiction to oncogenic signalling, would be unfit to home in SCN. The loss of oncogene addiction in SCN-adapted LSC has a consequence of crucial practical relevance: the refractoriness to inhibitors of the biological activity of oncogenic protein due to the lack of their molecular target. Thus, LSC hosted in SCN are suited to sustain the long-term maintenance of therapy-resistant minimal residual disease.
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23
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Targeting chronic myeloid leukemia stem cells with the hypoxia-inducible factor inhibitor acriflavine. Blood 2017; 130:655-665. [PMID: 28576876 DOI: 10.1182/blood-2016-10-745588] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 05/22/2017] [Indexed: 12/26/2022] Open
Abstract
Chronic myeloid leukemia (CML) is a hematopoietic stem cell (HSC)-driven neoplasia characterized by expression of the constitutively active tyrosine kinase BCR/Abl. CML therapy based on tyrosine kinase inhibitors (TKIs) is highly effective in inducing remission but not in targeting leukemia stem cells (LSCs), which sustain minimal residual disease and are responsible for CML relapse following discontinuation of treatment. The identification of molecules capable of targeting LSCs appears therefore of primary importance to aim at CML eradication. LSCs home in bone marrow areas at low oxygen tension, where HSCs are physiologically hosted. This study addresses the effects of pharmacological inhibition of hypoxia-inducible factor-1 (HIF-1), a critical regulator of LSC survival, on the maintenance of CML stem cell potential. We found that the HIF-1 inhibitor acriflavine (ACF) decreased survival and growth of CML cells. These effects were paralleled by decreased expression of c-Myc and stemness-related genes. Using different in vitro stem cell assays, we showed that ACF, but not TKIs, targets the stem cell potential of CML cells, including primary cells explanted from 12 CML patients. Moreover, in a murine CML model, ACF decreased leukemia development and reduced LSC maintenance. Importantly, ACF exhibited significantly less-severe effects on non-CML hematopoietic cells in vitro and in vivo. Thus, we propose ACF, a US Food and Drug Administration (FDA)-approved drug for nononcological use in humans, as a novel therapeutic approach to prevent CML relapse and, in combination with TKIs, enhance induction of remission.
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24
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Del Poggetto E, Tanturli M, Ben-Califa N, Gozzini A, Tusa I, Cheloni G, Marzi I, Cipolleschi MG, Kashman Y, Neumann D, Rovida E, Dello Sbarba P. Salarin C inhibits the maintenance of chronic myeloid leukemia progenitor cells. Cell Cycle 2016; 14:3146-54. [PMID: 26291130 DOI: 10.1080/15384101.2015.1078029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
We previously showed that incubation of chronic myeloid leukemia (CML) cells in very low oxygen selects a cell subset where the oncogenetic BCR/Abl protein is suppressed and which is thereby refractory to tyrosine kinase inhibitors used for CML therapy. In this study, salarin C, an anticancer macrolide extracted from the Fascaplysinopsis sponge, was tested as for its activity on CML cells, especially after their incubation in atmosphere at 0.1% oxygen. Salarin C induced mitotic cycle arrest, apoptosis and DNA damage. Salarin C also concentration-dependently inhibited the maintenance of stem cell potential in cultures in low oxygen of either CML cell lines or primary cells. Surprisingly, the drug also concentration-dependently enforced the maintenance of BCR/Abl signaling in low oxygen, an effect which was paralleled by the rescue of sensitivity of stem cell potential to IM. These results suggest a potential use of salarin C for the suppression of CML cells refractory to tyrosine kinase inhibitors.
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Affiliation(s)
- E Del Poggetto
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
| | - M Tanturli
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
| | - N Ben-Califa
- b Department of Cell and Developmental Biology; Sackler Faculty of Medicine ; Tel Aviv University ; Tel Aviv , Israel
| | - A Gozzini
- c Hematology Unit; "Careggi" University Hospital ; Florence , Italy
| | - I Tusa
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
| | - G Cheloni
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
| | - I Marzi
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
| | - M G Cipolleschi
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
| | - Y Kashman
- d School of Chemistry ; Tel Aviv University ; Tel Aviv , Israel
| | - D Neumann
- b Department of Cell and Developmental Biology; Sackler Faculty of Medicine ; Tel Aviv University ; Tel Aviv , Israel
| | - E Rovida
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
| | - P Dello Sbarba
- a Department of Experimental and Clinical Biomedical Sciences "Mario Serio" ; Universita degli Studi di Firenze ; Florence , Italy
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25
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Stivarou T, Cipolleschi MG, D'Amico M, Mannini A, Mini E, Rovida E, Dello Sbarba P, Olivotto M, Marzi I. The complex metabolic network gearing the G1/S transition in leukemic stem cells: Hints to a rational use of antineoplastic agents. Oncotarget 2016; 6:31985-96. [PMID: 26396171 PMCID: PMC4741654 DOI: 10.18632/oncotarget.5155] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 08/28/2015] [Indexed: 12/20/2022] Open
Abstract
We defined the stem cell profile of K562 line, demonstrating the expression of the Embryonic Transcription Factors Oct3/4, Sox2, Klf4 and Nanog. This profile was associated with a high vulnerability to the physiological oxidizable substrate pyruvate. remarkably, this substrate was shown to be innocuous, even at the highest doses, to normal differentiated cells. This vulnerability is based on a complex metabolic trim centered on the cellular redox state expressed by the NADP/NADPH ratio geared by the mitochondrial respiratory chain. Flow cytometry revealed that the inhibition of this chain by antimycin A produced cell accumulation in the S phase of cell cycle and apoptosis. This block negatively interferes with the aerobic synthesis of purines, without affecting the anaerobic synthesis of pyrimidines. This imbalance was reproduced by using two antifolate agents, LY309887 and raltitrexed (TDX), inhibitors of purine or pyrimidine synthesis, respectively. All this revealed the apparent paradox that low doses of TDX stimulated, instead of inhibiting, leukemia cell growth. This paradox might have significant impact on therapy with regard to the effects of TDX during the intervals of administration, when the drug concentrations become so low as to promote maintenance of dormant cancer cells in hypoxic tissue niches.
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Affiliation(s)
- Theodora Stivarou
- Department of Experimental and Clinical Biomedical Science, University of Florence, Florence, Italy.,Hellenic Pasteur Institute, Athens, Greece
| | - Maria Grazia Cipolleschi
- Department of Experimental and Clinical Biomedical Science, University of Florence, Florence, Italy
| | | | - Antonella Mannini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Enrico Mini
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Elisabetta Rovida
- Department of Experimental and Clinical Biomedical Science, University of Florence, Florence, Italy
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Science, University of Florence, Florence, Italy
| | - Massimo Olivotto
- Department of Experimental and Clinical Biomedical Science, University of Florence, Florence, Italy
| | - Ilaria Marzi
- Department of Experimental and Clinical Biomedical Science, University of Florence, Florence, Italy
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26
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Cipolleschi MG, Marzi I, Rovida E, Dello Sbarba P. Chronic Myeloid Leukemia and Hepatoblastoma: Two Cancer Models to Link Metabolism to Stem Cells. Front Oncol 2016; 6:95. [PMID: 27148487 PMCID: PMC4830810 DOI: 10.3389/fonc.2016.00095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 04/01/2016] [Indexed: 12/23/2022] Open
Abstract
Low oxygen tension is a critical aspect of the stem cell niche where stem cells are long-term maintained. In “physiologically hypoxic” stem cell niches, low oxygen tension restrains the clonal expansion of stem cells without blocking their cycling, thereby contributing substantially to favor their self-renewal. The capacity of stem cells, hematopoietic stem cells in particular, to reside in low oxygen is likely due to their specific metabolic profile. A strong drive to the characterization of this profile emerges from the notion that cancer stem cells (CSC), like normal stem cells, most likely rely on metabolic cues for the balance between self-renewal/maintenance and clonal expansion/differentiation. Accordingly, CSC homing to low oxygen stem cell niches is the best candidate mechanism to sustain the so-called minimal residual disease. Thus, the metabolic profile of CSC impacts long-term cancer response to therapy. On that basis, strategies to target CSC are intensely sought as a means to eradicate neoplastic diseases. Our “metabolic” approach to this challenge was based on two different experimental models: (A) the Yoshida’s ascites hepatoma AH130 cells, a highly homogeneous cancer cell population expressing stem cell features, used to identify, in CSC adapted to oxygen and/or nutrient shortage, metabolic features of potential therapeutic interest; (B) chronic myeloid leukemia, used to evaluate the impact of oxygen and/or nutrient shortage on the expression of an oncogenetic protein, the loss of which determines the refractoriness of CSC to oncogene-targeting therapies.
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Affiliation(s)
- Maria Grazia Cipolleschi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze , Florence , Italy
| | - Ilaria Marzi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze , Florence , Italy
| | - Elisabetta Rovida
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze , Florence , Italy
| | - Persio Dello Sbarba
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", Università degli Studi di Firenze , Florence , Italy
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27
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Deynoux M, Sunter N, Hérault O, Mazurier F. Hypoxia and Hypoxia-Inducible Factors in Leukemias. Front Oncol 2016; 6:41. [PMID: 26955619 PMCID: PMC4767894 DOI: 10.3389/fonc.2016.00041] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 02/08/2016] [Indexed: 01/10/2023] Open
Abstract
Despite huge improvements in the treatment of leukemia, the percentage of patients suffering relapse still remains significant. Relapse most often results from a small number of leukemic stem cells (LSCs) within the bone marrow, which are able to self-renew, and therefore reestablish the full tumor. The marrow microenvironment contributes considerably in supporting the protection and development of leukemic cells. LSCs share specific niches with normal hematopoietic stem cells with the niche itself being composed of a variety of cell types, including mesenchymal stem/stromal cells, bone cells, immune cells, neuronal cells, and vascular cells. A hallmark of the hematopoietic niche is low oxygen partial pressure, indeed this hypoxia is necessary for the long-term maintenance of hematopoietic stem/progenitor cells. Hypoxia is a strong signal, principally maintained by members of the hypoxia-inducible factor (HIF) family. In solid tumors, it has been well established that hypoxia triggers intrinsic metabolic changes and microenvironmental modifications, such as the stimulation of angiogenesis, through activation of HIFs. As leukemia is not considered a “solid” tumor, the role of oxygen in the disease was presumed to be inconsequential and remained long overlooked. This view has now been revised since hypoxia has been shown to influence leukemic cell proliferation, differentiation, and resistance to chemotherapy. However, the role of HIF proteins remains controversial with HIFs being considered as either oncogenes or tumor suppressor genes, depending on the study and model. The purpose of this review is to highlight our knowledge of hypoxia and HIFs in leukemic development and therapeutic resistance and to discuss the recent hypoxia-based strategies proposed to eradicate leukemias.
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Affiliation(s)
- Margaux Deynoux
- Génétique, Immunothérapie, Chimie et Cancer (GICC) UMR 7292, CNRS, UFR de Médecine, Université François-Rabelais de Tours , Tours , France
| | - Nicola Sunter
- Génétique, Immunothérapie, Chimie et Cancer (GICC) UMR 7292, CNRS, UFR de Médecine, Université François-Rabelais de Tours , Tours , France
| | - Olivier Hérault
- Génétique, Immunothérapie, Chimie et Cancer (GICC) UMR 7292, CNRS, UFR de Médecine, Université François-Rabelais de Tours, Tours, France; Service d'Hématologie Biologique, Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | - Frédéric Mazurier
- Génétique, Immunothérapie, Chimie et Cancer (GICC) UMR 7292, CNRS, UFR de Médecine, Université François-Rabelais de Tours , Tours , France
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28
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Rovida E, Peppicelli S, Bono S, Bianchini F, Tusa I, Cheloni G, Marzi I, Cipolleschi MG, Calorini L, Sbarba PD. The metabolically-modulated stem cell niche: a dynamic scenario regulating cancer cell phenotype and resistance to therapy. Cell Cycle 2015; 13:3169-75. [PMID: 25485495 PMCID: PMC4612663 DOI: 10.4161/15384101.2014.964107] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
This Perspective addresses the interactions of cancer stem cells (CSC) with environment which result in the modulation of CSC metabolism, and thereby of CSC phenotype and resistance to therapy. We considered first as a model disease chronic myeloid leukemia (CML), which is triggered by a well-identified oncogenetic protein (BCR/Abl) and brilliantly treated with tyrosine kinase inhibitors (TKi). However, TKi are extremely effective in inducing remission of disease, but unable, in most cases, to prevent relapse. We demonstrated that the interference with cell metabolism (oxygen/glucose shortage) enriches cells exhibiting the leukemia stem cell (LSC) phenotype and, at the same time, suppresses BCR/Abl protein expression. These LSC are therefore refractory to the TKi Imatinib-mesylate, pointing to cell metabolism as an important factor controlling the onset of TKi-resistant minimal residual disease (MRD) of CML and the related relapse. Studies of solid neoplasias brought another player into the control of MRD, low tissue pH, which often parallels cancer growth and progression. Thus, a 3-party scenario emerged for the regulation of CSC/LSC maintenance, MRD induction and disease relapse: the "hypoxic" versus the "ischemic" vs. the "acidic" environment. As these environments are unlikely constrained within rigid borders, we named this model the "metabolically-modulated stem cell niche."
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Affiliation(s)
- Elisabetta Rovida
- a Dipartimento di Scienze Biomediche Sperimentali e Cliniche "Mario Serio" ; Università degli Studi di Firenze & Istituto Toscano Tumori ; Firenze , Italy
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Velliou EG, Dos Santos SB, Papathanasiou MM, Fuentes-Gari M, Misener R, Panoskaltsis N, Pistikopoulos EN, Mantalaris A. Towards unravelling the kinetics of an acute myeloid leukaemia model system under oxidative and starvation stress: a comparison between two- and three-dimensional cultures. Bioprocess Biosyst Eng 2015; 38:1589-600. [PMID: 25911423 DOI: 10.1007/s00449-015-1401-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 04/14/2015] [Indexed: 12/26/2022]
Abstract
A great challenge when conducting ex vivo studies of leukaemia is the construction of an appropriate experimental platform that would recapitulate the bone marrow (BM) environment. Such a 3D scaffold system has been previously developed in our group [1]. Additionally to the BM architectural characteristics, parameters such as oxygen and glucose concentration are crucial as their value could differ between patients as well as within the same patient at different stages of treatment, consequently affecting the resistance of leukaemia to chemotherapy. The effect of oxidative and glucose stress-at levels close to human physiologic ones-on the proliferation and metabolic evolution of an AML model system (K-562 cell line) in conventional 2D cultures as well as in 3D scaffolds were studied. We observed that the K-562 cell line can proliferate and remain alive for 2 weeks in medium with glucose close to physiological levels both in 20 and 5% O2. We report interesting differences on the cellular response to the environmental, i.e., oxidative and/or nutritional stress stimuli in 2D and 3D. Higher adaptation to oxidative stress under non-starving conditions is observed in the 3D system. The glucose level in the medium has more impact on the cellular proliferation in the 3D compared to the 2D system. These differences can be of significant importance both when applying chemotherapy in vitro and also when constructing mathematical tools for optimisation of disease treatment.
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Affiliation(s)
- Eirini G Velliou
- Department of Chemical and Process Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK,
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Hypoxia inhibits JAK2V617F activation via suppression of SHP-2 function in myeloproliferative neoplasm cells. Exp Hematol 2014; 42:783-92.e1. [DOI: 10.1016/j.exphem.2014.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 04/27/2014] [Accepted: 05/14/2014] [Indexed: 11/22/2022]
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Cipolleschi MG, Rovida E, Dello Sbarba P. The Culture-Repopulating Ability assays and incubation in low oxygen: a simple way to test drugs on leukaemia stem or progenitor cells. Curr Pharm Des 2014; 19:5374-83. [PMID: 23394087 PMCID: PMC3821383 DOI: 10.2174/1381612811319300006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 02/01/2013] [Indexed: 11/25/2022]
Abstract
The Culture-Repopulating Ability (CRA) assays is a method to measure in vitro the bone marrow-repopulating potential of haematopoietic cells. The method was developed in our laboratory in the course of studies based on the use of growth factor-supplemented liquid cultures to study haematopoietic stem/progenitor cell resistance to, and selection at, low oxygen tensions in the incubation atmosphere. These studies led us to put forward the first hypothesis of the existence in vivo of haematopoietic stem cell niches where oxygen tension is physiologically lower than in other bone marrow areas. The CRA assays and incubation in low oxygen were later adapted to the study of leukaemias. Stabilized leukaemia cell lines, ensuring genetically homogeneous cells and enhancing repeatability of results, were found nevertheless phenotypically heterogeneous, comprising cell subsets exhibiting functional phenotypes of stem or progenitor cells. These subsets can be assayed separately, provided an experimental system capable to select one from another (such as different criteria for incubation in low oxygen) is established. On this basis, a two-step procedure was designed, including a primary culture of leukaemia cells in low oxygen for different times, where drug treatment is applied, followed by the transfer of residual cell population (CRA assay) to a drug-free secondary culture incubated at standard oxygen tension, where the expansion of population is allowed. The CRA assays, applied to cell lines first and then to primary cells, represent a simple and relatively rapid, yet accurate and reliable, method for the pre-screening of drugs potentially active on leukaemias which in our opinion could be adopted systematically before they are tested in vivo.
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Affiliation(s)
- Maria Grazia Cipolleschi
- Dipartimento di Patologia e Oncologia Sperimentali dell'Universitá degli Studi di Firenze e Istituto Toscano Tumori, viale G.B. Morgagni 50, 50134 Firenze, Italy
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Rovida E, Marzi I, Cipolleschi MG, Dello Sbarba P. One more stem cell niche: how the sensitivity of chronic myeloid leukemia cells to imatinib mesylate is modulated within a "hypoxic" environment. HYPOXIA 2014; 2:1-10. [PMID: 27774462 PMCID: PMC5045050 DOI: 10.2147/hp.s51812] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This is a review (by no means comprehensive) of how the stem cell niche evolved from an abstract concept to a complex system, implemented with a number of experimental data at the cellular and molecular levels, including metabolic cues, on which we focused in particular. The concept was introduced in 1978 to model bone marrow sites suited to host hematopoietic stem cells (HSCs) and favor their self-renewal, while restraining clonal expansion and commitment to differentiation. Studies of the effects of low oxygen tension on HSC maintenance in vitro led us to hypothesize niches were located within bone marrow areas where oxygen tension is lower than elsewhere. We named these areas hypoxic stem cell niches, although a low oxygen tension is to be considered physiological for the environment where HSCs are maintained. HSCs were later shown to have the option of cycling in low oxygen, which steers this cycling to the maintenance of stem cell potential. Cell subsets capable of withstanding incubation in very low oxygen were also detected within leukemia cell populations, including chronic myeloid leukemia (CML). The oncogenetic Bcr/Abl protein is completely suppressed in these subsets, whereas Bcr/Abl messenger ribonucleic acid is not, indicating that CML cells resistant to low oxygen are independent of Bcr/Abl for persistence in culture but remain genetically leukemic. Accordingly, leukemia stem cells of CML selected in low oxygen are refractory to the Bcr/Abl inhibitor imatinib mesylate. Bcr/Abl protein suppression turned out to be actually determined when glucose shortage complicated the effects of low oxygen, indicating that ischemia-like conditions are the driving force of leukemia stem cell refractoriness to imatinib mesylate. These studies pointed to “ischemic” stem cell niches as a novel scenario for the maintenance of minimal residual disease of CML. A possible functional relationship of the “ischemic” with the “hypoxic” stem cell niche is discussed.
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Affiliation(s)
- Elisabetta Rovida
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche, Università degli Studi di Firenze, Florence, Italy; Istituto Toscano Tumori, Florence, Italy
| | - Ilaria Marzi
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche, Università degli Studi di Firenze, Florence, Italy; Istituto Toscano Tumori, Florence, Italy
| | - Maria Grazia Cipolleschi
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche, Università degli Studi di Firenze, Florence, Italy; Istituto Toscano Tumori, Florence, Italy
| | - Persio Dello Sbarba
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche, Università degli Studi di Firenze, Florence, Italy; Istituto Toscano Tumori, Florence, Italy
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Abstract
We determined the effects of severe hypoxia (∼0.1% O2) on acute myeloid leukemia cells expressing the AML1/ETO oncogene. Incubation of Kasumi-1 cells in hypoxia induced growth arrest, apoptosis and reduction of AML1/ETO protein expression. The conditional expression of AML1/ETO in U937-A/E cells showed that hypoxia induces marked apoptosis in AML1/ETO-expressing cells only, pointing to AML1/ETO as a factor predisposing cells to hypoxia-induced apoptosis. In AML1/ETO-expressing cells, hypoxia enhanced TRAIL expression and its proapoptotic effects. AML1/ETO was found to bind TRAIL promoter and induce TRAIL transcription, although TRAIL expression was restrained by a concomitant relative transcription block. In hypoxia, such a TRAIL repression was removed and an increase of TRAIL expression was induced. Finally, blocking anti-TRAIL antibodies markedly reduced (Kasumi-1 cells) or completely inhibited (U937-A/E cells) hypoxia-induced apoptosis. Taken together, these results indicated that hypoxia induces apoptosis in AML1/ETO-expressing cells via a TRAIL/caspase 8-dependent autocrine loop and that TRAIL is a key regulator of hypoxia-induced apoptosis in these cells.
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Mimeault M, Batra SK. Hypoxia-inducing factors as master regulators of stemness properties and altered metabolism of cancer- and metastasis-initiating cells. J Cell Mol Med 2013; 17:30-54. [PMID: 23301832 PMCID: PMC3560853 DOI: 10.1111/jcmm.12004] [Citation(s) in RCA: 245] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 11/20/2012] [Indexed: 12/12/2022] Open
Abstract
Accumulating lines of experimental evidence have revealed that hypoxia-inducible factors, HIF-1α and HIF-2α, are key regulators of the adaptation of cancer- and metastasis-initiating cells and their differentiated progenies to oxygen and nutrient deprivation during cancer progression under normoxic and hypoxic conditions. Particularly, the sustained stimulation of epidermal growth factor receptor (EGFR), insulin-like growth factor-1 receptor (IGF-1R), stem cell factor (SCF) receptor KIT, transforming growth factor-β receptors (TGF-βRs) and Notch and their downstream signalling elements such as phosphatidylinositol 3′-kinase (PI3K)/Akt/molecular target of rapamycin (mTOR) may lead to an enhanced activity of HIFs. Moreover, the up-regulation of HIFs in cancer cells may also occur in the hypoxic intratumoral regions formed within primary and secondary neoplasms as well as in leukaemic cells and metastatic prostate and breast cancer cells homing in the hypoxic endosteal niche of bone marrow. The activated HIFs may induce the expression of numerous gene products such as induced pluripotency-associated transcription factors (Oct-3/4, Nanog and Sox-2), glycolysis- and epithelial-mesenchymal transition (EMT) programme-associated molecules, including CXC chemokine receptor 4 (CXCR4), snail and twist, microRNAs and angiogenic factors such as vascular endothelial growth factor (VEGF). These gene products in turn can play critical roles for high self-renewal ability, survival, altered energy metabolism, invasion and metastases of cancer cells, angiogenic switch and treatment resistance. Consequently, the targeting of HIF signalling network and altered metabolic pathways represents new promising strategies to eradicate the total mass of cancer cells and improve the efficacy of current therapies against aggressive and metastatic cancers and prevent disease relapse.
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Affiliation(s)
- Murielle Mimeault
- Department of Biochemistry and Molecular Biology, College of Medicine, Eppley Cancer Institute, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA.
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Current world literature. Curr Opin Oncol 2011; 23:700-9. [PMID: 21993416 DOI: 10.1097/cco.0b013e32834d384a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Tanturli M, Giuntoli S, Barbetti V, Rovida E, Dello Sbarba P. Hypoxia selects bortezomib-resistant stem cells of chronic myeloid leukemia. PLoS One 2011; 6:e17008. [PMID: 21347297 PMCID: PMC3037943 DOI: 10.1371/journal.pone.0017008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Accepted: 01/19/2011] [Indexed: 12/13/2022] Open
Abstract
We previously demonstrated that severe hypoxia inhibits growth of Chronic Myeloid Leukemia (CML) cells and selects stem cells where BCR/Ablprotein is suppressed, although mRNA is not, so that hypoxia-selected stem cells, while remaining leukemic, are independent of BCR/Abl signaling and thereby refractory to Imatinib-mesylate. The main target of this study was to address the effects of the proteasome inhibitor Bortezomib (BZ) on the maintenance of stem or progenitor cells in hypoxic primary cultures (LC1), by determining the capacity of LC1 cells to repopulate normoxic secondary cultures (LC2) and the kinetics of this repopulation. Unselected K562 cells from day-2 hypoxic LC1 repopulated LC2 with rapid, progenitor-type kinetics; this repopulation was suppressed by BZ addition to LC1 at time 0, but completely resistant to day-1 BZ, indicating that progenitors require some time to adapt to stand hypoxia. K562 cells selected in hypoxic day-7 LC1 repopulated LC2 with stem-type kinetics, which was largely resistant to BZ added at either time 0 or day 1, indicating that hypoxia-selectable stem cells are BZ-resistant per se, i.e. before their selection. Furthermore, these cells were completely resistant to day-6 BZ, i.e. after selection. On the other hand, hypoxia-selected stem cells from CD34-positive cells of blast-crisis CML patients appeared completely resistant to either time-0 or day-1 BZ. To exploit in vitro the capacity of CML cells to adapt to hypoxia enabled to detect a subset of BZ-resistant leukemia stem cells, a finding of particular relevance in light of the fact that our experimental system mimics the physiologically hypoxic environment of bone marrow niches where leukemia stem cells most likely home and sustain minimal residual disease in vivo. This suggests the use of BZ as an enhanced strategy to control CML. in particular to prevent relapse of disease, to be considered with caution and to need further deepening.
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Affiliation(s)
- Michele Tanturli
- Dipartimento di Patologia e Oncologia Sperimentali, Università degli Studi di Firenze, and Istituto Toscano Tumori, Firenze, Italy
| | - Serena Giuntoli
- Dipartimento di Patologia e Oncologia Sperimentali, Università degli Studi di Firenze, and Istituto Toscano Tumori, Firenze, Italy
| | - Valentina Barbetti
- Dipartimento di Patologia e Oncologia Sperimentali, Università degli Studi di Firenze, and Istituto Toscano Tumori, Firenze, Italy
| | - Elisabetta Rovida
- Dipartimento di Patologia e Oncologia Sperimentali, Università degli Studi di Firenze, and Istituto Toscano Tumori, Firenze, Italy
| | - Persio Dello Sbarba
- Dipartimento di Patologia e Oncologia Sperimentali, Università degli Studi di Firenze, and Istituto Toscano Tumori, Firenze, Italy
- * E-mail:
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