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Bauer K, Hauswirth A, Gleixner KV, Greiner G, Thaler J, Bettelheim P, Filik Y, Koller E, Hoermann G, Staber PB, Sperr WR, Keil F, Valent P. BRD4 degraders may effectively counteract therapeutic resistance of leukemic stem cells in AML and ALL. Am J Hematol 2024. [PMID: 38822666 DOI: 10.1002/ajh.27385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 05/03/2024] [Accepted: 05/20/2024] [Indexed: 06/03/2024]
Abstract
Acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL) are life-threatening hematopoietic malignancies characterized by clonal expansion of leukemic blasts in the bone marrow and peripheral blood. The epigenetic reader BRD4 and its downstream effector MYC have recently been identified as potential drug targets in human AML and ALL. We compared anti-leukemic efficacies of the small-molecule BET inhibitor JQ1 and the recently developed BRD4 degraders dBET1 and dBET6 in AML and ALL cells. JQ1, dBET1, and dBET6 were found to suppress growth and viability in all AML and ALL cell lines examined as well as in primary patient-derived AML and ALL cells, including CD34+/CD38- and CD34+/CD38+ leukemic stem and progenitor cells, independent of the type (variant) of leukemia or molecular driver expressed in leukemic cells. Moreover, we found that dBET6 overcomes osteoblast-induced drug resistance in AML and ALL cells, regardless of the type of leukemia or the drug applied. Most promising cooperative or even synergistic drug combination effects were seen with dBET6 and the FLT3 ITD blocker gilteritinib in FLT3 ITD-mutated AML cells, and with dBET6 and the multi-kinase blocker ponatinib in BCR::ABL1+ ALL cells. Finally, all BRD4-targeting drugs suppressed interferon-gamma- and tumor necrosis factor-alpha-induced expression of the resistance-related checkpoint antigen PD-L1 in AML and ALL cells, including LSC. In all assays examined, the BRD4 degrader dBET6 was a superior anti-leukemic drug compared with dBET1 and JQ1. Together, BRD4 degraders may provide enhanced inhibition of multiple mechanisms of therapy resistance in AML and ALL.
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Affiliation(s)
- Karin Bauer
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Alexander Hauswirth
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Karoline V Gleixner
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Georg Greiner
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Ihr Labor, Medical Diagnostic Laboratories, Vienna, Austria
| | - Johannes Thaler
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | | | - Yüksel Filik
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Elisabeth Koller
- Third Medical Department for Hematology and Oncology, Hanusch Hospital Vienna, Vienna, Austria
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - Philipp B Staber
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang R Sperr
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Felix Keil
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Third Medical Department for Hematology and Oncology, Hanusch Hospital Vienna, Vienna, Austria
| | - Peter Valent
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
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2
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Frankel NW, Deng H, Yucel G, Gainer M, Leemans N, Lam A, Li Y, Hung M, Lee D, Lee CT, Banicki A, Tian M, Almudhfar N, Naitmazi L, Roguev A, Lee S, Wong W, Gordley R, Lu TK, Garrison BS. Precision off-the-shelf natural killer cell therapies for oncology with logic-gated gene circuits. Cell Rep 2024; 43:114145. [PMID: 38669141 DOI: 10.1016/j.celrep.2024.114145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 03/25/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Acute myeloid leukemia (AML) is an aggressive disease with a poor prognosis (5-year survival rate of 30.5% in the United States). Designing cell therapies to target AML is challenging because no single tumor-associated antigen (TAA) is highly expressed on all cancer subpopulations. Furthermore, TAAs are also expressed on healthy cells, leading to toxicity risk. To address these targeting challenges, we engineer natural killer (NK) cells with a multi-input gene circuit consisting of chimeric antigen receptors (CARs) controlled by OR and NOT logic gates. The OR gate kills a range of AML cells from leukemic stem cells to blasts using a bivalent CAR targeting FLT3 and/or CD33. The NOT gate protects healthy hematopoietic stem cells (HSCs) using an inhibitory CAR targeting endomucin, a protective antigen unique to healthy HSCs. NK cells with the combined OR-NOT gene circuit kill multiple AML subtypes and protect primary HSCs, and the circuit also works in vivo.
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MESH Headings
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Humans
- Leukemia, Myeloid, Acute/therapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/immunology
- Animals
- Mice
- Receptors, Chimeric Antigen/metabolism
- Receptors, Chimeric Antigen/immunology
- Gene Regulatory Networks
- Hematopoietic Stem Cells/metabolism
- Cell Line, Tumor
- Precision Medicine/methods
- Cell- and Tissue-Based Therapy/methods
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Affiliation(s)
| | - Han Deng
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Gozde Yucel
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Marcus Gainer
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Nelia Leemans
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Alice Lam
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Yongshuai Li
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Michelle Hung
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Derrick Lee
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Chen-Ting Lee
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Andrew Banicki
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | - Mengxi Tian
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | | | | | - Assen Roguev
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA
| | | | | | | | - Timothy K Lu
- Senti Biosciences, Inc., South San Francisco, CA 94080, USA; Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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3
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Khorashad JS, Rizzo S, Tonks A. Reactive oxygen species and its role in pathogenesis and resistance to therapy in acute myeloid leukemia. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2024; 7:5. [PMID: 38434766 PMCID: PMC10905166 DOI: 10.20517/cdr.2023.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/24/2024] [Accepted: 02/19/2024] [Indexed: 03/05/2024]
Abstract
Relapse following a short clinical response to therapy is the major challenge for the management of acute myeloid leukemia (AML) patients. Leukemic stem cells (LSC), as the source of relapse, have been investigated for their metabolic preferences and their alterations at the time of relapse. As LSC rely on oxidative phosphorylation (OXPHOS) for energy requirement, reactive oxygen species (ROS), as by-products of OXPHOS, have been investigated for their role in the effectiveness of the standard AML therapy. Increased levels of non-mitochondrial ROS, generated by nicotinamide adenine dinucleotide phosphate oxidase, in a subgroup of AML patients add to the complexity of studying ROS. Although there are various studies presenting the contribution of ROS to AML pathogenesis, resistance, and its inhibition or activation as a target, a model that can clearly explain its role in AML has not been conceptualized. This is due to the heterogeneity of AML, the dynamics of ROS production, which is influenced by factors such as the type of treatment, cell differentiation state, mitochondrial activity, and also the heterogeneous generation of non-mitochondrial ROS and limited available data on their interaction with the microenvironment. This review summarizes these challenges and the recent progress in this field.
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Affiliation(s)
- Jamshid Sorouri Khorashad
- Department of Immunology and inflammation, Imperial College London, London, W12 0NN, UK
- Department of Molecular Pathology, Institute of Cancer Research, Sutton, SM2 5PT, UK
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
| | - Sian Rizzo
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
| | - Alex Tonks
- Department of Haematology, Division of Cancer & Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
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4
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Zhang L, Yang S, Chen H, Xue C, Wang T, Chen S, Xu X, Ma S, Yu M, Guo T, Han Y, Yan J, Shen J, Cai H, Li F. Characterization of the biological and transcriptomic signatures of natural killer cells derived from cord blood and peripheral blood. Am J Cancer Res 2023; 13:3531-3546. [PMID: 37693132 PMCID: PMC10492111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/06/2023] [Indexed: 09/12/2023] Open
Abstract
Longitudinal studies have indicated the pivotal role of natural killer cells (NKs) in the elimination of certain infections and malignancies. Currently, perinatal blood (PB) and cord blood (CB) have been considered with promising prospective for autogenous and allogeneic NKs transplantation, yet the similarities and differences at the biological and molecular levels are largely obscure. We isolated mononuclear cells (MNCs) from PB and CB, and compared the biological phenotypes of resident NKs by flow cytometry and cell counting. Then, we turned to our well-established "3ILs" strategy and co-culture for NK cell activation and cytotoxicity analyses, respectively. Finally, with the aid of transcriptomic analyses, we further dissected the signatures of PB-NKs and CB-NKs. CB-NKs revealed superiority in cellular vitality over PB-NKs, together with variations in subpopulations. CB-NKs showed higher cytotoxicity over PB-NKs against K562 cells. Furthermore, we found both NKs revealed multifaceted conservations and differences in gene expression profiling and genetic variations, together with gene subsets and signaling pathway. Collectively, both NKs revealed multifaceted similarities and diverse variations at the cellular and transcriptomic levels. Our findings would benefit the further exploration of the biological and transcriptomic properties of CB-NKs and PB-NKs, together with the development of NK cell-based cytotherapy.
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Affiliation(s)
- Leisheng Zhang
- School of Medicine, Nankai UniversityTianjin 300071, China
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province & National Health Commission (NHC) Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial HospitalLanzhou 730000, Gansu, China
- Key Laboratory of Radiation Technology and Biophysics, Hefei Institute of Physical Science, Chinese Academy of SciencesHefei 230031, Anhui, China
- Jiangxi Research Center of Stem Cell Engineering, Jiangxi Health-Biotech Stem Cell Technology Co., Ltd.Shangrao 334000, Jiangxi, China
- Department of General Practice, Affiliated Hospital of Xiangnan UniversityChenzhou 423000, Hunan, China
| | - Sijun Yang
- School of Medicine, Nankai UniversityTianjin 300071, China
- Jiangxi Research Center of Stem Cell Engineering, Jiangxi Health-Biotech Stem Cell Technology Co., Ltd.Shangrao 334000, Jiangxi, China
| | - Hongjun Chen
- Department of Intensive Care Unit, Affiliated Hospital of Zunyi Medical UniversityZunyi 563099, Guizhou, China
| | - Chun’e Xue
- Department of Hematology, Langfang City Hospital of Traditional Chinese MedicineLangfang 065000, Hebei, China
| | - Ti’er Wang
- Hospital Infection Management Department, Chengdu Seventh People’s HospitalChengdu 610041, Sichuan, China
- Department of Hematology, The First Affiliated Hospital of Kunming Medical University, Hematology Research Center of Yunnan ProvinceKunming 650032, Yunnan, China
| | - Shuang Chen
- Jiangxi Research Center of Stem Cell Engineering, Jiangxi Health-Biotech Stem Cell Technology Co., Ltd.Shangrao 334000, Jiangxi, China
| | - Xianghong Xu
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province & National Health Commission (NHC) Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial HospitalLanzhou 730000, Gansu, China
| | - Shixun Ma
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province & National Health Commission (NHC) Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial HospitalLanzhou 730000, Gansu, China
| | - Miao Yu
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province & National Health Commission (NHC) Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial HospitalLanzhou 730000, Gansu, China
| | - Tiankang Guo
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province & National Health Commission (NHC) Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial HospitalLanzhou 730000, Gansu, China
| | - Yan Han
- Department of General Practice, Affiliated Hospital of Xiangnan UniversityChenzhou 423000, Hunan, China
| | - Jianhui Yan
- Department of General Practice, Affiliated Hospital of Xiangnan UniversityChenzhou 423000, Hunan, China
| | - Jiakun Shen
- Department of Hematology, Shangrao People’s HospitalShangrao 334099, Jiangxi, China
| | - Hui Cai
- Key Laboratory of Molecular Diagnostics and Precision Medicine for Surgical Oncology in Gansu Province & National Health Commission (NHC) Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Gansu Provincial HospitalLanzhou 730000, Gansu, China
| | - Feifei Li
- Department of Pathophysiology, School of Basic Medical Sciences, Anhui Medical UniversityHefei 230032, Anhui, China
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5
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Valent P, Sadovnik I, Peter B, Ivanov D, Schulenburg A, Hadzijusufovic E, Willmann M, Rülicke T, Herrmann H, Rabitsch W, Karlic H, Gleixner KV, Sperr WR, Hoermann G, Dahlhoff M, Pfeilstöcker M, Keil F, Lion T, Grunt TW. Vienna Cancer Stem Cell Club (VCSCC): 20 year jubilee and future perspectives. Expert Rev Hematol 2023; 16:659-670. [PMID: 37493441 DOI: 10.1080/17474086.2023.2232545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/29/2023] [Indexed: 07/27/2023]
Abstract
INTRODUCTION The Vienna Cancer Stem Cell Club (VCSCC) was launched by a group of scientists in Vienna in 2002. AREAS COVERED Major aims of the VCSCC are to support research on cancer stem cells (CSC) in hematopoietic malignancies and to translate CSC-related markers and targets into clinical application. A primary focus of research in the VCSCC is the leukemic stem cell (LSC). Between 2013 and 2021, members of the VCSCC established a special research program on myeloproliferative neoplasms and since 2008, members of the VCSCC run the Ludwig Boltzmann Institute for Hematology and Oncology. In all these years, the VCSCC provided a robust intellectual platform for translational hematology and LSC research in Vienna. Furthermore, the VCSCC interacts with several national and international study groups and societies in the field. Representatives of the VCSCC also organized a number of international meetings and conferences on neoplastic stem cells, including LSC, in the past 15 years, and contributed to the definition and classification of CSC/LSC and related pre-malignant and malignant conditions. EXPERT OPINION The VCSCC will continue to advance the field and to develop LSC-detecting and LSC-eradicating concepts through which diagnosis, prognostication, and therapy of blood cancer patients should improve.
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Affiliation(s)
- Peter Valent
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Irina Sadovnik
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Barbara Peter
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Daniel Ivanov
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Axel Schulenburg
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Stem Cell Transplantation Unit, Medical University of Vienna, Vienna, Austria
| | - Emir Hadzijusufovic
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
- Department for Companion Animals and Horses, University Clinic for Small Animals, Internal Medicine Small Animals, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Michael Willmann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department for Companion Animals and Horses, University Clinic for Small Animals, Internal Medicine Small Animals, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Thomas Rülicke
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Institute of in vivo and in vitro Models, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Harald Herrmann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria
| | - Werner Rabitsch
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Stem Cell Transplantation Unit, Medical University of Vienna, Vienna, Austria
| | - Heidrun Karlic
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Karoline V Gleixner
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang R Sperr
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - Maik Dahlhoff
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Institute of in vivo and in vitro Models, Department of Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Michael Pfeilstöcker
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Third Medical Department for Hematology and Oncology, Hanusch Hospital, Vienna, Austria
| | - Felix Keil
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Third Medical Department for Hematology and Oncology, Hanusch Hospital, Vienna, Austria
| | - Thomas Lion
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- St.Anna Children´s Cancer Research Institute (CCRI), Vienna, Austria
| | - Thomas W Grunt
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
- Department of Internal Medicine I, Division of Clinical Oncology, Medical University of Vienna, Vienna, Austria
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6
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Ivanov D, Milosevic Feenstra JD, Sadovnik I, Herrmann H, Peter B, Willmann M, Greiner G, Slavnitsch K, Hadzijusufovic E, Rülicke T, Dahlhoff M, Hoermann G, Machherndl‐Spandl S, Eisenwort G, Fillitz M, Sliwa T, Krauth M, Bettelheim P, Sperr WR, Koller E, Pfeilstöcker M, Gisslinger H, Keil F, Kralovics R, Valent P. Phenotypic characterization of disease-initiating stem cells in JAK2- or CALR-mutated myeloproliferative neoplasms. Am J Hematol 2023; 98:770-783. [PMID: 36814396 PMCID: PMC10952374 DOI: 10.1002/ajh.26889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/07/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023]
Abstract
Myeloproliferative neoplasms (MPN) are characterized by uncontrolled expansion of myeloid cells, disease-related mutations in certain driver-genes including JAK2, CALR, and MPL, and a substantial risk to progress to secondary acute myeloid leukemia (sAML). Although behaving as stem cell neoplasms, little is known about disease-initiating stem cells in MPN. We established the phenotype of putative CD34+ /CD38- stem cells and CD34+ /CD38+ progenitor cells in MPN. A total of 111 patients with MPN suffering from polycythemia vera, essential thrombocythemia, or primary myelofibrosis (PMF) were examined. In almost all patients tested, CD34+ /CD38- stem cells expressed CD33, CD44, CD47, CD52, CD97, CD99, CD105, CD117, CD123, CD133, CD184, CD243, and CD274 (PD-L1). In patients with PMF, MPN stem cells often expressed CD25 and sometimes also CD26 in an aberrant manner. MPN stem cells did not exhibit substantial amounts of CD90, CD273 (PD-L2), CD279 (PD-1), CD366 (TIM-3), CD371 (CLL-1), or IL-1RAP. The phenotype of CD34+ /CD38- stem cells did not change profoundly during progression to sAML. The disease-initiating capacity of putative MPN stem cells was confirmed in NSGS mice. Whereas CD34+ /CD38- MPN cells engrafted in NSGS mice, no substantial engraftment was produced by CD34+ /CD38+ or CD34- cells. The JAK2-targeting drug fedratinib and the BRD4 degrader dBET6 induced apoptosis and suppressed proliferation in MPN stem cells. Together, MPN stem cells display a unique phenotype, including cytokine receptors, immune checkpoint molecules, and other clinically relevant target antigens. Phenotypic characterization of neoplastic stem cells in MPN and sAML should facilitate their enrichment and the development of stem cell-eradicating (curative) therapies.
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Affiliation(s)
- Daniel Ivanov
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
| | | | - Irina Sadovnik
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
| | - Harald Herrmann
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Department of Radiation OncologyMedical University of ViennaViennaAustria
| | - Barbara Peter
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
| | - Michael Willmann
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Department for Companion Animals, Clinical Unit for Internal MedicineUniversity of Veterinary Medicine ViennaViennaAustria
| | - Georg Greiner
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Department of Laboratory MedicineMedical University of ViennaViennaAustria
- Ihr Labor, Medical Diagnostic LaboratoriesViennaAustria
| | - Katharina Slavnitsch
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Emir Hadzijusufovic
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Department for Companion Animals, Clinical Unit for Internal MedicineUniversity of Veterinary Medicine ViennaViennaAustria
| | - Thomas Rülicke
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Department of Biomedical SciencesUniversity of Veterinary Medicine ViennaViennaAustria
| | - Maik Dahlhoff
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Institute of in vivo and in vitro ModelsUniversity of Veterinary Medicine ViennaViennaAustria
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- MLL Munich Leukemia LaboratoryMunichGermany
| | - Sigrid Machherndl‐Spandl
- Hospital Ordensklinikum Elisabethinen LinzLinzAustria
- Johannes Kepler University, Medical FacultyLinzAustria
| | - Gregor Eisenwort
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Third Medical Department for Hematology and OncologyHanusch Hospital ViennaViennaAustria
| | - Michael Fillitz
- Third Medical Department for Hematology and OncologyHanusch Hospital ViennaViennaAustria
| | - Thamer Sliwa
- Third Medical Department for Hematology and OncologyHanusch Hospital ViennaViennaAustria
| | - Maria‐Theresa Krauth
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
| | | | - Wolfgang R. Sperr
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
| | - Elisabeth Koller
- Third Medical Department for Hematology and OncologyHanusch Hospital ViennaViennaAustria
| | - Michael Pfeilstöcker
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Third Medical Department for Hematology and OncologyHanusch Hospital ViennaViennaAustria
| | - Heinz Gisslinger
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Felix Keil
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
- Third Medical Department for Hematology and OncologyHanusch Hospital ViennaViennaAustria
| | - Robert Kralovics
- Department of Laboratory MedicineMedical University of ViennaViennaAustria
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology and OncologyMedical University of ViennaViennaAustria
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7
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Mughal TI, Pemmaraju N, Bejar R, Gale RP, Bose P, Kiladjian JJ, Prchal J, Royston D, Pollyea D, Valent P, Brümmendorf TH, Skorski T, Patnaik M, Santini V, Fenaux P, Kucine N, Verstovsek S, Mesa R, Barbui T, Saglio G, Van Etten RA. Perspective: Pivotal translational hematology and therapeutic insights in chronic myeloid hematopoietic stem cell malignancies. Hematol Oncol 2022; 40:491-504. [PMID: 35368098 DOI: 10.1002/hon.2987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/21/2022] [Accepted: 03/03/2022] [Indexed: 11/10/2022]
Abstract
Despite much of the past 2 years being engulfed by the devastating consequences of the SAR-CoV-2 pandemic, significant progress, even breathtaking, occurred in the field of chronic myeloid malignancies. Some of this was show-cased at the 15th Post-American Society of Hematology (ASH) and the 25th John Goldman workshops on myeloproliferative neoplasms (MPN) held on 9th-10th December 2020 and 7th-10th October 2021, respectively. The inaugural Post-ASH MPN workshop was set out in 2006 by John Goldman (deceased) and Tariq Mughal to answer emerging translational hematology and therapeutics of patients with these malignancies. Rather than present a resume of the discussions, this perspective focuses on some of the pivotal translational hematology and therapeutic insights in these diseases.
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Affiliation(s)
- Tariq I Mughal
- Tufts University School of Medicine, Boston, Massachusetts, USA
- University of Buckingham, Buckingham, UK
| | - Naveen Pemmaraju
- MD Anderson Cancer Center, University of Texas, Houston, Texas, USA
| | - Rafael Bejar
- University of California San Diego, La Jolla, California, USA
| | | | - Prithviraj Bose
- MD Anderson Cancer Center, University of Texas, Houston, Texas, USA
| | | | - Josef Prchal
- Huntsman Cancer Center, Salt Lake City, Utah, USA
| | - Daniel Royston
- John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Daniel Pollyea
- University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Peter Valent
- Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | | | - Tomasz Skorski
- Temple University Lewis Katz School of Medicine, Philadelphia, Pennsylvania, USA
| | | | - Valeria Santini
- Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence, Italy
| | - Pierre Fenaux
- Hospital St Louis, Assistance Publique Hôpitaux de Paris, Paris, France
| | | | - Srdan Verstovsek
- MD Anderson Cancer Center, University of Texas, Houston, Texas, USA
| | - Ruben Mesa
- Mays Cancer Center, UT Health San Antonio MD Anderson Cancer Center, San Antonio, Texas, USA
| | - Tiziano Barbui
- Fondazione per la Ricerca Ospedale Maggiore di Bergamo, Bergamo, Italy
| | | | - Richard A Van Etten
- Chao Family Comprehensive Cancer Center, University of California, Irvine, California, USA
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8
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Chang YJ, Zhao XY, Huang XJ. Haploidentical Stem Cell Transplantation for Acute Myeloid Leukemia: Current Therapies, Challenges and Future Prospective. Front Oncol 2021; 11:758512. [PMID: 34778077 PMCID: PMC8581046 DOI: 10.3389/fonc.2021.758512] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 10/05/2021] [Indexed: 01/01/2023] Open
Abstract
Haploidentical stem cell transplantation (haplo-SCT), an alternative donor source, offers a curative therapy for patients with acute myeloid leukemia (AML) who are transplant candidates. Advances in transplantation techniques, such as donor selection, conditioning regimen modification, and graft-versus-host disease prophylaxis, have successfully improved the outcomes of AML patients receiving haplo-SCT and extended the haploidentical transplant indictions for AML. Presently, treating de novo AML, secondary AML, therapy-related AML and refractory and relapsed AML with haplo-SCT can achieve comparable outcomes to those of human leukocyte antigen (HLA)-matched sibling donor transplantation (MSDT), unrelated donor transplantation or umbilical cord blood transplantation. For some subgroups of AML subjects, such as patients with positive pretransplantation minimal/measurable residual disease, recent studies suggest that haplo-SCT might be superior to MSDT in decreasing relapse and improving survival. Unfortunately, for patients with AML after haplo-SCT, relapse and infections remain the causes of death that restrict further improvement in clinical outcomes. In this review, we discuss the recent advances and challenges in haplo-SCT for AML treatment, mainly focusing on unmanipulated haplo-SCT protocols. We provide an outlook on future prospects and suggest that relapse prophylaxis, intervention, and treatment, as well as infection prevention and therapy, are areas of active research in AML patients who receive haploidentical allografts.
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Affiliation(s)
- Ying-Jun Chang
- Peking University Institute of Hematology, Peking University People's Hospital, Beijing, China.,National Clinical Research Center for Hematologic Disease, Beijing, China.,Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China.,Collaborative Innovation Center of Hematology, Peking University, Beijing, China
| | - Xiang-Yu Zhao
- Peking University Institute of Hematology, Peking University People's Hospital, Beijing, China.,National Clinical Research Center for Hematologic Disease, Beijing, China.,Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China.,Collaborative Innovation Center of Hematology, Peking University, Beijing, China
| | - Xiao-Jun Huang
- Peking University Institute of Hematology, Peking University People's Hospital, Beijing, China.,National Clinical Research Center for Hematologic Disease, Beijing, China.,Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, Beijing, China.,Collaborative Innovation Center of Hematology, Peking University, Beijing, China
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9
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Fajardo-Orduña GR, Ledesma-Martínez E, Aguiñiga-Sánchez I, Mora-García MDL, Weiss-Steider B, Santiago-Osorio E. Inhibitors of Chemoresistance Pathways in Combination with Ara-C to Overcome Multidrug Resistance in AML. A Mini Review. Int J Mol Sci 2021; 22:ijms22094955. [PMID: 34066940 PMCID: PMC8124548 DOI: 10.3390/ijms22094955] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022] Open
Abstract
Acute myeloid leukemia (AML), the most common type of leukemia in older adults, is a heterogeneous disease that originates from the clonal expansion of undifferentiated hematopoietic progenitor cells. These cells present a remarkable variety of genes and proteins with altered expression and function. Despite significant advances in understanding the molecular panorama of AML and the development of therapies that target mutations, survival has not improved significantly, and the therapy standard is still based on highly toxic chemotherapy, which includes cytarabine (Ara-C) and allogeneic hematopoietic cell transplantation. Approximately 60% of AML patients respond favorably to these treatments and go into complete remission; however, most eventually relapse, develop refractory disease or chemoresistance, and do not survive for more than five years. Therefore, drug resistance that initially occurs in leukemic cells (primary resistance) or that develops during or after treatment (acquired resistance) has become the main obstacle to AML treatment. In this work, the main molecules responsible for generating chemoresistance to Ara-C in AML are discussed, as well as some of the newer strategies to overcome it, such as the inclusion of molecules that can induce synergistic cytotoxicity with Ara-C (MNKI-8e, emodin, metformin and niclosamide), subtoxic concentrations of chemotherapy (PD0332991), and potently antineoplastic treatments that do not damage nonmalignant cells (heteronemin or hydroxyurea + azidothymidine).
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Affiliation(s)
- Guadalupe Rosario Fajardo-Orduña
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico; (G.R.F.-O.); (E.L.-M.); (I.A.-S.); (B.W.-S.)
| | - Edgar Ledesma-Martínez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico; (G.R.F.-O.); (E.L.-M.); (I.A.-S.); (B.W.-S.)
| | - Itzen Aguiñiga-Sánchez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico; (G.R.F.-O.); (E.L.-M.); (I.A.-S.); (B.W.-S.)
- Department of Biomedical Sciences, School of Medicine, Faculty of High Studies Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico
| | - María de Lourdes Mora-García
- Immunobiology Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico;
| | - Benny Weiss-Steider
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico; (G.R.F.-O.); (E.L.-M.); (I.A.-S.); (B.W.-S.)
| | - Edelmiro Santiago-Osorio
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico; (G.R.F.-O.); (E.L.-M.); (I.A.-S.); (B.W.-S.)
- Correspondence: ; Tel.: +52-55-57-73-41-08
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10
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Zhang H, Wang P, Li Z, He Y, Gan W, Jiang H. Anti-CLL1 Chimeric Antigen Receptor T-Cell Therapy in Children with Relapsed/Refractory Acute Myeloid Leukemia. Clin Cancer Res 2021; 27:3549-3555. [PMID: 33832948 DOI: 10.1158/1078-0432.ccr-20-4543] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 01/20/2021] [Accepted: 04/06/2021] [Indexed: 11/16/2022]
Abstract
PURPOSE The survival rate of children with refractory/relapsed acute myeloid leukemia (R/R-AML) by salvage chemotherapy is minimal. Treatment with chimeric antigen receptor T cells (CAR T) has emerged as a novel therapy to improve malignancies treatment. C-type lectin-like molecule 1 (CLL1) is highly expressed on AML stem cells, blast cells, and monocytes, but not on normal hematopoietic stem cells, indicating the therapeutic potential of anti-CLL1 CAR T in AML treatment. This study aimed to test the safety and efficacy of CAR T-cell therapy in R/R-AML. PATIENTS AND METHODS Four pediatric patients with R/R-AML were enrolled in the ongoing phase I/II anti-CLL1 CAR T-cell therapy trial. The CAR design was based on an apoptosis-inducing gene, FKBP-caspase 9, to establish a safer CAR (4SCAR) application. Anti-CLL1 CAR was transduced into peripheral blood mononuclear cells of the patients via lentivector 4SCAR, followed by infusion into the recipients after lymphodepletion chemotherapy. Cytokine release syndrome, immune effector cell-associated neurotoxicity syndrome, and other adverse events were documented. Treatment response was evaluated by morphology and flow cytometry-based minimal residual disease assays. RESULTS Three patients with R/R-AML achieved complete remission and minimal residual disease negativity, while the other patient remained alive for 5 months. All these patients experienced low-grade and manageable adverse events. CONCLUSIONS On the basis of our single-institution experience, autologous anti-CLL1 CAR T-cell therapy has the potential to be a safe and efficient alternative treatment for children with R/R-AML, and therefore requires further investigation.
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Affiliation(s)
- Hui Zhang
- Department of Hematology/Oncology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, P.R. China.
| | - Pengfei Wang
- Department of Hematology/Oncology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, P.R. China
| | - Zhuoyan Li
- Department of Hematology/Oncology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, P.R. China
| | - Yingyi He
- Department of Hematology/Oncology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, P.R. China
| | - Wenting Gan
- Department of Hematology/Oncology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, P.R. China.
| | - Hua Jiang
- Department of Hematology/Oncology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, P.R. China.
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11
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Valent P, Bauer K, Sadovnik I, Smiljkovic D, Ivanov D, Herrmann H, Filik Y, Eisenwort G, Sperr WR, Rabitsch W. Cell-based and antibody-mediated immunotherapies directed against leukemic stem cells in acute myeloid leukemia: Perspectives and open issues. Stem Cells Transl Med 2020; 9:1331-1343. [PMID: 32657052 PMCID: PMC7581453 DOI: 10.1002/sctm.20-0147] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/18/2020] [Accepted: 06/04/2020] [Indexed: 12/19/2022] Open
Abstract
Despite new insights in molecular features of leukemic cells and the availability of novel treatment approaches and drugs, acute myeloid leukemia (AML) remains a major clinical challenge. In fact, many patients with AML relapse after standard therapy and eventually die from progressive disease. The basic concept of leukemic stem cells (LSC) has been coined with the goal to decipher clonal architectures in various leukemia-models and to develop curative drug therapies by eliminating LSC. Indeed, during the past few years, various immunotherapies have been tested in AML, and several of these therapies follow the strategy to eliminate relevant leukemic subclones by introducing LSC-targeting antibodies or LSC-targeting immune cells. These therapies include, among others, new generations of LSC-eliminating antibody-constructs, checkpoint-targeting antibodies, bi-specific antibodies, and CAR-T or CAR-NK cell-based strategies. However, responses are often limited and/or transient which may be due to LSC resistance. Indeed, AML LSC exhibit multiple forms of resistance against various drugs and immunotherapies. An additional problems are treatment-induced myelotoxicity and other side effects. The current article provides a short overview of immunological targets expressed on LSC in AML. Moreover, cell-based therapies and immunotherapies tested in AML are discussed. Finally, the article provides an overview about LSC resistance and strategies to overcome resistance.
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Affiliation(s)
- Peter Valent
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
| | - Karin Bauer
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
| | - Irina Sadovnik
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
| | - Dubravka Smiljkovic
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Daniel Ivanov
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Harald Herrmann
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
- Department of Radiation OncologyMedical University of ViennaViennaAustria
| | - Yüksel Filik
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
| | - Gregor Eisenwort
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
| | - Wolfgang R. Sperr
- Department of Internal Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
| | - Werner Rabitsch
- Ludwig Boltzmann Institute for Hematology & OncologyMedical University of ViennaViennaAustria
- Department of Internal Medicine I, Stem Cell Transplantation UnitMedical University of ViennaViennaAustria
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12
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Cancer stem cells and ceramide signaling: the cutting edges of immunotherapy. Mol Biol Rep 2020; 47:8101-8111. [PMID: 32885363 DOI: 10.1007/s11033-020-05790-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 08/28/2020] [Indexed: 12/14/2022]
Abstract
The multipotent, self renewing "cancer stem cells" (CSCs), a small population within tumor microenvironment facilitates transformed cells to grow and propagate within the body. The CSCs are discovered as resistant to the chemotherapeutic drug with distinct immunological characteristics. In recent years, immunologically targeting CSCs have emerged as an integral part of effective and successful cancer therapy. CSCs notably exhibit dysregulation in conventional sub-cellular sphingolipid metabolism. Recently, ceramide decaying enzymes have been shown to activate alternative ceramide signaling pathways leading to reduction in efficacy of the chemotherapeutic drugs. Therefore, a control over ceramide mediated modulations of CSCs offers an attractive dimension of effective cancer treatment strategy in future. In this review, we focused on the recent findings on broad spectrum of ceramide mediated signaling in CSCs within the tumor niche and their role in potential cancer immunotherapy.
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