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Shameli A, Dharmani-Khan P, Luider J, Auer I, Shabani-Rad MT. Exploring blast composition in myelodysplastic syndromes and myelodysplastic/myeloproliferative neoplasms: CD45RA and CD371 improve diagnostic value of flow cytometry through assessment of myeloblast heterogeneity and stem cell aberrancy. CYTOMETRY PART B-CLINICAL CYTOMETRY 2020; 100:574-589. [PMID: 33369070 PMCID: PMC8519034 DOI: 10.1002/cyto.b.21983] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/07/2020] [Accepted: 12/15/2020] [Indexed: 12/12/2022]
Abstract
Background Flow cytometry immunophenotyping (FCIP) can improve diagnosis of myelodysplastic syndromes (MDS) and myelodysplastic/myeloproliferative neoplasms (MDS/MPN), although its application is challenging due to difficulties in standardization, complexity of antibody panels and subjective interpretation of data. Since blasts are invariably affected in these disorders, we developed a FCIP approach for detailed and objective analysis of the blast population. Methods FCIP using a one‐tube 10‐color (13‐marker) antibody panel was performed on bone marrow samples from 23 MDS and 8 MDS/MPN patients, 21 cytopenic patients non‐diagnostic for MDS (Non‐MDS), and 16 Control samples. Results MDS and MDS/MPN cases demonstrated one to several immunophenotypic abnormalities including: increased myeloblasts, decreased stage‐1 hematogones, aberrant stem cells, abnormal myeloblast heterogeneity/divergence from normal, increased or decreased CD45 intensity, increased CD117 or CD123 intensity, decreased CD38 intensity, and aberrant expression of lineage markers (CD5, CD19, CD56). A Blast score was developed that showed sensitivity of 80.6% and specificity of 90.5% for immunophenotypic diagnosis of MDS and MDS/MPN. Expression levels of CD45RA and CD371 were used to evaluate abnormal myeloblast heterogeneity and stem cell aberrancy. Both these features were, for the first time, incorporated into a scoring system and resulted in 19% increase in the sensitivity of the assay for lower‐risk MDS. Conclusion Deep immunophenotypic analysis of the blast population is valuable for diagnosis of MDS and MDS/MPN and can potentially provide sensitivity and specificity figures comparable to those previously described using more comprehensive panels that assess maturing myelomonocytic and erythroid elements in addition to progenitor cells.
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Affiliation(s)
- Afshin Shameli
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Poonam Dharmani-Khan
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Joanne Luider
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Iwona Auer
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Meer-Taher Shabani-Rad
- Division of Hematology, Alberta Precision Laboratories, South Zone, Department of Pathology & Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
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IL3RA-Targeting Antibody-Drug Conjugate BAY-943 with a Kinesin Spindle Protein Inhibitor Payload Shows Efficacy in Preclinical Models of Hematologic Malignancies. Cancers (Basel) 2020; 12:cancers12113464. [PMID: 33233768 PMCID: PMC7709048 DOI: 10.3390/cancers12113464] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/13/2020] [Accepted: 11/17/2020] [Indexed: 12/15/2022] Open
Abstract
IL3RA (CD123) is the alpha subunit of the interleukin 3 (IL-3) receptor, which regulates the proliferation, survival, and differentiation of hematopoietic cells. IL3RA is frequently expressed in acute myeloid leukemia (AML) and classical Hodgkin lymphoma (HL), presenting an opportunity to treat AML and HL with an IL3RA-directed antibody-drug conjugate (ADC). Here, we describe BAY-943 (IL3RA-ADC), a novel IL3RA-targeting ADC consisting of a humanized anti-IL3RA antibody conjugated to a potent proprietary kinesin spindle protein inhibitor (KSPi). In vitro, IL3RA-ADC showed potent and selective antiproliferative efficacy in a panel of IL3RA-expressing AML and HL cell lines. In vivo, IL3RA-ADC improved survival and reduced tumor burden in IL3RA-positive human AML cell line-derived (MOLM-13 and MV-4-11) as well as in patient-derived xenograft (PDX) models (AM7577 and AML11655) in mice. Furthermore, IL3RA-ADC induced complete tumor remission in 12 out of 13 mice in an IL3RA-positive HL cell line-derived xenograft model (HDLM-2). IL3RA-ADC was well-tolerated and showed no signs of thrombocytopenia, neutropenia, or liver toxicity in rats, or in cynomolgus monkeys when dosed up to 20 mg/kg. Overall, the preclinical results support the further development of BAY-943 as an innovative approach for the treatment of IL3RA-positive hematologic malignancies.
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Guo D, Xu P, Chen D, Wang L, Zhu Y, Zuo Y, Chen B. Daunorubicin-Loaded CdTe QDs Conjugated with Anti-CD123 mAbs: A Novel Delivery System for Myelodysplastic Syndromes Treatment. Int J Nanomedicine 2020; 15:521-536. [PMID: 32021192 PMCID: PMC6988587 DOI: 10.2147/ijn.s233395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 01/09/2020] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION The myelodysplastic syndromes (MDS) are a very heterogeneous group of myeloid disorders characterized by peripheral blood cytopenias and increase risk of transformation to acute myeloid leukemia (AML). Daunorubicin (DNR) is an indispensable drug for the treatment of MDS and AML. However, its side effects including cardiac toxicity and bone marrow suppression severely limit clinical application. Many researches reported high expression of CD123 antigen on high-risk MDS cells, so we constructed a novel drug delivery system comprising daunorubicin-loaded CdTe QDs conjugated with anti-CD123 mAbs (DNR-CdTe-CD123) to develop targeted combination chemotherapy for MDS. METHODS CdTe conjugated antiCD123 through amide bond, co-loaded with DNR with electrostatic bonding. Then, we determined characterization and release rate of DNR-CdTe-CD123. The therapeutic effect and side effect of drug delivery system were evaluated through in vitro and in vivo experiments. RESULTS CdTe showed appropriate diameter and good dispersibility and DNR was loaded into CdTes with high encapsulation efficiency and drug loading. The maximum drug loading and encapsulation efficiency were 42.08 ± 0.64% and 74.52 ± 1.81%, respectively, at DNR concentration of 0.2mg/mL and anti-CD123 mAbs volume of 5ul (100ug/mL). Flow cytometry (FCM) showed that CD123 antigen was highly expressed on MUTZ-1 cells, and its expression rate was 72.89 ± 10.67%. In vitro experiments showed that the inhibition rate and apoptosis rate of MUTZ-1 cells treated with DNR-CdTe-CD123 were higher than those in the other groups (P<0.05). Compared with the other groups, the level of apoptosis-related protein (P53, cleaved caspase-9, Bax and cleaved caspase-3) were upregulated in DNR-CdTe-CD123 group (P<0.05). In vivo experiments, DNR-CdTe-CD123 can effectively inhibit the tumor growth of MDS-bearing nude mice and reduce the side effects of DNR on myocardial cells. CONCLUSION The system of DNR-CdTe-CD123 enhances the therapeutic effects and reduce the side effects of DNR, thus providing a novel platform for MDS treatment.
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Affiliation(s)
- Dan Guo
- Department of Hematology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu210093, People’s Republic of China
- Department of Hematology, The Affiliated Hospital of Nantong University, Nantong, Jiangsu226001, People’s Republic of China
| | - Peipei Xu
- Department of Hematology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu210093, People’s Republic of China
| | - Dangui Chen
- Department of Hematology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu210093, People’s Republic of China
| | - Lili Wang
- Department of Hematology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu210093, People’s Republic of China
| | - Yudi Zhu
- Department of Hematology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu210093, People’s Republic of China
| | - Yifan Zuo
- Department of Hematology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu210093, People’s Republic of China
| | - Bing Chen
- Department of Hematology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu210093, People’s Republic of China
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Hou S, Hao J, Wang YY, Zhao BB, Xiao GW, Li YQ, Liu X, Zou ZL, Yao Y, Xiong H. Retracted: EBF1 gene promotes the proliferation and inhibits the apoptosis of bone marrow CD34+ cells in patients with myelodysplastic syndrome through negative regulation of mitogen-activated protein kinase axis. J Cell Biochem 2019; 120:1407-1419. [PMID: 30335886 DOI: 10.1002/jcb.27177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 05/24/2018] [Indexed: 02/02/2023]
Abstract
The transcription factor, early B cell factor 1 (EBF1), plays a vital role in the lineage specification involving early B cell development and the onset of myelodysplastic syndrome (MDS). Therefore, to investigate whether or not EBF1 affects MDS as well as the transcription factor's underlying mechanism, we used CD34+ hematopoietic stem cells in bone marrow from patients with MDS. The extracted cells were then transfected with a series of EBF1, short hairpin RNA against EBF1 (shEBF1), and SB203580 (a specific mitogen-activated protein kinase [MAPK] axis inhibitor). The effects EBF1 gene and MAPK axis had on cell proliferation, apoptosis, and migration were determined by in vitro cell culturing. We made observations that involved EBF1 inhibiting the messenger RNA (mRNA) level of p38 MAPK, increasing the mRNA levels of extracellular-signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), extracellular-signal-regulated kinase 5 (ERK5), decreasing the protein expression of Bcl-2-associated X protein (Bax), and finally elevating the protein levels of B cell lymphoma/leukemia-2 (Bcl-2), stem cell factor (SCF), erythropoietin receptor (EpoR), p-ERK, p-JNK, p-ERK5, cyclin D, cyclin E, cyclin-dependent kinase 2 (CDK2), and CDK6, implying that EBF1 may very well have an inhibitory role in the MAPK axis. Another discovery found that EBF1 had a positive effect on the promotion of bone marrow CD34+ cell proliferation as well as its migration, but inhibited the apoptosis of cells. The results we obtained from this study indicated that the EBF1 gene suppresses the activation of the MAPK axis, thereby promoting both the proliferation and migration of bone marrow CD34+ cells as well as inhibiting the associating apoptosis. The effects of the EBF1 gene are likely to present a new therapeutic target in preventing the progression of MDS.
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Affiliation(s)
- Shuang Hou
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Jie Hao
- Department of Hematology, Shanghai Jingan North Station Hospital, Shanghai, China
| | - Yan-Yu Wang
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Bing-Bing Zhao
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Gong-Wei Xiao
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Yan-Qing Li
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Xi Liu
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Zhi-Lan Zou
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Ye Yao
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
| | - Hong Xiong
- Department of Hematology, Shanghai Xuhui Central Hospital, Shanghai, China
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Matzen SMH, Raaschou‐Jensen KK, Kallenbach K. Implementation of the Ogata flow cytometric scoring system in routine diagnostics of myelodysplastic syndrome. Health Sci Rep 2018; 1:e90. [PMID: 30623045 PMCID: PMC6242364 DOI: 10.1002/hsr2.90] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 07/12/2018] [Accepted: 08/09/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND AIMS Compiling evidence has emerged for the relevance of flow cytometric assessment as a valuable part of the diagnostic work-up of myelodysplastic syndrome (MDS). This study aimed at evaluating the implementation of a simple flow cytometric scoring system (FCSS), the Ogata score, in a routine diagnostic laboratory. METHODS A total of 35 patient samples with a clinical suspicion of MDS were retrospectively assessed using the FCSS. The accuracy of the FCSS was evaluated on the basis of the final diagnoses of the patients. RESULTS The final diagnoses included 17 MDS, 4 other myeloid cancers, and 14 reactive changes. Thirty-two of 35 (91%) were correctly scored by the FCSS. All 3 incorrect scores were from samples classified as "other myeloid cancers." Of the initial pathological evaluation of the bone marrows, 20% were inconclusive or incorrect. All inconclusive samples were correctly scored using the FCSS. CONCLUSION The FCSS evaluated here has high accuracy and low complexity. Cases with inconclusive pathological evaluation will especially potentially benefit from adding the Ogata score to the diagnostic work-up. The system will be feasible to implement in most flow cytometry laboratories without the need for supplemental antibody panels. It should be emphasized that the FCSS, in our hands, provided poor discrimination between MDS and other myeloid clonal diseases.
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Affiliation(s)
| | - Klas Kræsten Raaschou‐Jensen
- Department of HaematologyZealand University HospitalRoskildeDenmark
- Department of HaematologyOdense University HospitalOdenseDenmark
| | - Klaus Kallenbach
- Department of Clinical PathologyZealand University HospitalRoskildeDenmark
- Department of Pathology, RigshospitaletCopenhagen University HospitalCopenhagenDenmark
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Gardikas N, Vikentiou M, Konsta E, Kontos CK, Papageorgiou SG, Spathis A, Bazani E, Bouchla A, Kapsimali V, Psarra K, Foukas P, Dimitriadis G, Pappa V. Immunophenotypic Profile of CD34+ Subpopulations and Their Role in the Diagnosis and Prognosis of Patients with De-Novo, Particularly Low-Grade Myelodysplastic Syndromes. CYTOMETRY PART B-CLINICAL CYTOMETRY 2018; 96:73-82. [DOI: 10.1002/cyto.b.21725] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/20/2018] [Accepted: 06/29/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Nikolaos Gardikas
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
| | - Myrofora Vikentiou
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
| | - Evgenia Konsta
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
| | - Christos K. Kontos
- Department of Biochemistry and Molecular Biology; National and Kapodistrian University of Athens; Panepistimiopolis, Athens Greece
| | - Sotirios G. Papageorgiou
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
| | - Aris Spathis
- 2nd Department of Pathology, School of Medicine; University of Athens, University General Hospital Attikon; Haidari Greece
| | - Efthimia Bazani
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
| | - Anthi Bouchla
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
| | - Violetta Kapsimali
- Department of Dermatology and Venereology; HIV/AIDS Unit, Andreas Syggros Hospital; Athens Greece
| | - Katherina Psarra
- Department of Immunology and Histocompatibility; Evangelismos Hospital; Athens Greece
| | - Periklis Foukas
- 2nd Department of Pathology, School of Medicine; University of Athens, University General Hospital Attikon; Haidari Greece
| | - George Dimitriadis
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
| | - Vasiliki Pappa
- Second Department of Internal Medicine and Research Institute; University General Hospital Attikon; Haidari Greece
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Magalhães SMM, Niero-Melo L, Chauffaille MDLLF, Velloso EDRP, Lorand-Metze I, Buzzini R, Bernardo WM. Guidelines on myelodysplastic syndromes: Associação Brasileira de Hematologia, Hemoterapia e Terapia Celular. Hematol Transfus Cell Ther 2018; 40:255-261. [PMID: 30128435 PMCID: PMC6098189 DOI: 10.1016/j.htct.2018.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 05/22/2018] [Indexed: 12/01/2022] Open
Affiliation(s)
| | - Lígia Niero-Melo
- Faculdade de Medicina de Botucatu da Universidade Estadual Paulista (FMB Unesp), Botucatu, SP, Brazil
| | | | - Elvira Deolinda Rodrigues Pereira Velloso
- Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HC FMUSP), São Paulo, SP, Brazil; Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Irene Lorand-Metze
- Instituto Nacional de Ciência e Tecnologia do Sangue da Universidade Estadual de Campinas (Hemocentro Unicamp), Campinas, SP, Brazil
| | - Renata Buzzini
- Associação Médica Brasileira (AMB), São Paulo, SP, Brazil
| | - Wanderley Marques Bernardo
- Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HC FMUSP), São Paulo, SP, Brazil; Associação Médica Brasileira (AMB), São Paulo, SP, Brazil
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Shi M, Nguyen P, Jevremovic D. Flow Cytometric Assessment of Chronic Myeloid Neoplasms. Clin Lab Med 2017; 37:803-819. [DOI: 10.1016/j.cll.2017.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Font P, Subirá D, Matarraz S, Benavente C, Cedena MT, Morado M, Pérez Corral A, Bellón JM, Díez-Martín JL. Multicenter comparison of CD34+ myeloid cell count by flow cytometry in low-risk myelodysplastic syndrome. Is it feasible? CYTOMETRY PART B-CLINICAL CYTOMETRY 2017; 94:527-535. [DOI: 10.1002/cyto.b.21538] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 05/16/2017] [Accepted: 06/13/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Patricia Font
- Department of Hematology; Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM); Madrid Spain
| | - Dolores Subirá
- Department of Hematology; Hospital Universitario de Guadalajara; Guadalajara Spain
| | - Sergio Matarraz
- Centro de Investigación del Cáncer; (IBMCC, CSIC-USAL) and IBSAL, Servicio de Citometría and Departamento de Medicina, Universidad de Salamanca; Salamanca Spain
| | - Celina Benavente
- Department of Hematology; Hospital Clínico San Carlos; Madrid Spain
| | - María Teresa Cedena
- Department of Hematology; Hospital Universitario 12 de Octubre; Madrid Spain
| | - Marta Morado
- Department of Hematology; Hospital Universitario La Paz; Madrid Spain
| | - Ana Pérez Corral
- Department of Hematology; Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM); Madrid Spain
| | - José María Bellón
- Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM); Madrid Spain
| | - José Luis Díez-Martín
- Department of Hematology; Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM); Madrid Spain
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Assessment of immune reconstitution status in recipients of a successful hematopoietic stem cell transplant from peripheral blood after reduced intensity conditioning. Blood Cells Mol Dis 2016; 58:52-6. [DOI: 10.1016/j.bcmd.2016.03.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 01/23/2023]
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11
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Schulenburg A, Blatt K, Cerny-Reiterer S, Sadovnik I, Herrmann H, Marian B, Grunt TW, Zielinski CC, Valent P. Cancer stem cells in basic science and in translational oncology: can we translate into clinical application? J Hematol Oncol 2015; 8:16. [PMID: 25886184 PMCID: PMC4345016 DOI: 10.1186/s13045-015-0113-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 01/14/2015] [Indexed: 02/08/2023] Open
Abstract
Since their description and identification in leukemias and solid tumors, cancer stem cells (CSC) have been the subject of intensive research in translational oncology. Indeed, recent advances have led to the identification of CSC markers, CSC targets, and the preclinical and clinical evaluation of the CSC-eradicating (curative) potential of various drugs. However, although diverse CSC markers and targets have been identified, several questions remain, such as the origin and evolution of CSC, mechanisms underlying resistance of CSC against various targeted drugs, and the biochemical basis and function of stroma cell-CSC interactions in the so-called ‘stem cell niche.’ Additional aspects that have to be taken into account when considering CSC elimination as primary treatment-goal are the genomic plasticity and extensive subclone formation of CSC. Notably, various cell fractions with different combinations of molecular aberrations and varying proliferative potential may display CSC function in a given neoplasm, and the related molecular complexity of the genome in CSC subsets is considered to contribute essentially to disease evolution and acquired drug resistance. In the current article, we discuss new developments in the field of CSC research and whether these new concepts can be exploited in clinical practice in the future.
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Affiliation(s)
- Axel Schulenburg
- Bone Marrow Transplantation Unit, Department of Internal Medicine I, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, A-1090, Wien, Austria. .,Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Stem Cell Transplantation Unit, Medical University of Vienna, Waehringer Guertel 18-20, A-1090, Wien, Austria.
| | - Katharina Blatt
- Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Sabine Cerny-Reiterer
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Irina Sadovnik
- Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Harald Herrmann
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Radiation Therapy, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria.
| | - Brigitte Marian
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Institute for Cancer Research, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Thomas W Grunt
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Clinical Oncology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Christoph C Zielinski
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Clinical Oncology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
| | - Peter Valent
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Wien, Austria. .,Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Währinger Gürtel 18-20, Vienna, 1090, Wien, Austria.
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12
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Jevremovic D, Timm MM, Reichard KK, Morice WG, Hanson CA, Viswanatha DS, Howard MT, Nguyen PL. Loss of blast heterogeneity in myelodysplastic syndrome and other chronic myeloid neoplasms. Am J Clin Pathol 2014; 142:292-8. [PMID: 25125617 DOI: 10.1309/ajcp73qsllydegxk] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES Flow cytometry immunophenotyping has been suggested as an adjunctive technique in the evaluation of myeloid malignancies, especially in the myelodysplastic syndromes. However, its use has been limited due to complexity and cost restraints. The goal of this study is to attempt a simpler approach to flow cytometry immunophenotyping in myeloid neoplasms. METHODS We analyzed bone marrow specimens of 45 selected patients and an additional 99 consecutive random patients using a limited antibody panel. RESULTS Normal CD34-positive blasts show a characteristic pattern of CD13/HLA-DR expression, with three readily identifiable subpopulations. In contrast, myeloid neoplasms frequently show loss of this heterogeneity. CONCLUSIONS Analysis of a limited antibody panel with a focus on CD13/HLA-DR expression provides relatively high specificity and sensitivity for the detection of myeloid neoplasms.
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Affiliation(s)
- Dragan Jevremovic
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
| | - Michael M. Timm
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
| | - Kaaren K. Reichard
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
| | - William G. Morice
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
| | - Curtis A. Hanson
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
| | - David S. Viswanatha
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
| | - Matthew T. Howard
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
| | - Phuong L. Nguyen
- Department of Laboratory Medicine and Pathology, Mayo Clinic Rochester, Rochester, MN
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13
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Porwit A, van de Loosdrecht AA, Bettelheim P, Brodersen LE, Burbury K, Cremers E, Della Porta MG, Ireland R, Johansson U, Matarraz S, Ogata K, Orfao A, Preijers F, Psarra K, Subirá D, Valent P, van der Velden VHJ, Wells D, Westers TM, Kern W, Béné MC. Revisiting guidelines for integration of flow cytometry results in the WHO classification of myelodysplastic syndromes-proposal from the International/European LeukemiaNet Working Group for Flow Cytometry in MDS. Leukemia 2014; 28:1793-8. [PMID: 24919805 DOI: 10.1038/leu.2014.191] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Revised: 04/06/2014] [Accepted: 05/02/2014] [Indexed: 12/22/2022]
Abstract
Definite progress has been made in the exploration of myelodysplastic syndromes (MDS) by flow cytometry (FCM) since the publication of the World Health Organization 2008 classification of myeloid neoplasms. An international working party initiated within the European LeukemiaNet and extended to include members from Australia, Canada, Japan, Taiwan and the United States has, through several workshops, developed and subsequently published consensus recommendations. The latter deal with preanalytical precautions, and propose small and large panels, which allow evaluating immunophenotypic anomalies and calculating myelodysplasia scores. The current paper provides guidelines that strongly recommend the integration of FCM data with other diagnostic tools in the diagnostic work-up of MDS.
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Affiliation(s)
- A Porwit
- Department of Pathobiology and Laboratory Medicine, University of Toronto, University Health Network, Toronto General Hospital, Toronto, Ontario, Canada
| | - A A van de Loosdrecht
- Department of Hematology, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - P Bettelheim
- First Medical Department, Elisabethinen Hospital, Linz, Austria
| | | | - K Burbury
- Division of Cancer Medicine, Peter MacCallum Cancer Centre, East Melbourne, Melbourne, Victoria, Australia
| | - E Cremers
- Department of Hematology, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - M G Della Porta
- Department of Hematology and Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, and University of Pavia, Pavia, Italy
| | | | | | - S Matarraz
- Servicio Central de Citometría, Centro de Investigación del Cáncer, Instituto de Biologia Celular y Molecular del Cáncer CSIC/USAL/IBSAL) and Department of Medicine, Universidad de Salamanca, Salamanca, Spain
| | - K Ogata
- Metropolitan Research Center for Blood Disorders MRC JAPAN, Midorigaoka, Chofu, Tokyo, Japan
| | - A Orfao
- Servicio Central de Citometría, Centro de Investigación del Cáncer, Instituto de Biologia Celular y Molecular del Cáncer CSIC/USAL/IBSAL) and Department of Medicine, Universidad de Salamanca, Salamanca, Spain
| | - F Preijers
- Department of Hematology, St Radboud University Medical Center, Nijmegen, The Netherlands
| | - K Psarra
- Department of Immunology-Histocompatibility, Evangelismos Hospital, Athens, Greece
| | - D Subirá
- Department of Hematology, Hospital Universitario de Guadalajara, Guadalajara, Spain
| | - P Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria
| | - V H J van der Velden
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - D Wells
- HematoLogics, Inc., Seattle, WA, USA
| | - T M Westers
- Department of Hematology, Cancer Center Amsterdam, VU University Medical Center, Amsterdam, The Netherlands
| | - W Kern
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - M C Béné
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France
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Li LJ, Tao JL, Fu R, Wang HQ, Jiang HJ, Yue LZ, Zhang W, Liu H, Shao ZH. Increased CD34+CD38−CD123+ cells in myelodysplastic syndrome displaying malignant features similar to those in AML. Int J Hematol 2014; 100:60-9. [DOI: 10.1007/s12185-014-1590-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 04/25/2014] [Accepted: 04/28/2014] [Indexed: 01/29/2023]
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