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Mikhailova E, Illarionova O, Komkov A, Zerkalenkova E, Mamedov I, Shelikhova L, Olshanskaya Y, Miakova N, Novichkova G, Karachunskiy A, Maschan M, Popov A. Reliable Flow-Cytometric Approach for Minimal Residual Disease Monitoring in Patients with B-Cell Precursor Acute Lymphoblastic Leukemia after CD19-Targeted Therapy. Cancers (Basel) 2022; 14:5445. [PMID: 36358863 PMCID: PMC9658935 DOI: 10.3390/cancers14215445] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/26/2022] [Accepted: 11/03/2022] [Indexed: 09/10/2023] Open
Abstract
We aimed to develop an antibody panel and data analysis algorithm for multicolor flow cytometry (MFC), which is a reliable method for minimal residual disease (MRD) detection in patients with B-cell precursor acute lymphoblastic leukemia (BCP-ALL) treated with CD19-directed therapy. The development of the approach, which was adapted for the case of possible CD19 loss, was based on the additional B-lineage marker expression data obtained from a study of primary BCP-ALL patients, an analysis of the immunophenotypic changes that occur during blinatumomab or CAR-T therapy, and an analysis of very early CD19-negative normal BCPs. We have developed a single-tube 11-color panel for MFC-MRD detection. CD22- and iCD79a-based primary B-lineage gating (preferably consecutive) was recommended. Based on patterns of antigen expression changes and the relative expansion of normal CD19-negative BCPs, guidelines for MFC data analysis and interpretation were established. The suggested approach was tested in comparison with the molecular techniques: IG/TR gene rearrangement detection by next-generation sequencing (NGS) and RQ-PCR for fusion-gene transcripts (FGTs). Qualitative concordance rates of 82.8% and 89.8% were obtained for NGS-MRD and FGT-MRD results, respectively. We have developed a sensitive and reliable approach that allows MFC-MRD monitoring after CD19-directed treatment, even in the case of possible CD19 loss.
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Affiliation(s)
- Ekaterina Mikhailova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Olga Illarionova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Alexander Komkov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
- Department of Genomics of Adaptive Immunity, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117998 Moscow, Russia
| | - Elena Zerkalenkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Ilgar Mamedov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
- Department of Genomics of Adaptive Immunity, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, 117998 Moscow, Russia
| | - Larisa Shelikhova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Yulia Olshanskaya
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Natalia Miakova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Galina Novichkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Alexander Karachunskiy
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Michael Maschan
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
| | - Alexander Popov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, 117998 Moscow, Russia
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Mikhailova E, Itov A, Zerkalenkova E, Roumiantseva J, Olshanskaya Y, Karachunskiy A, Novichkova G, Maschan M, Popov A. B-lineage antigens that are useful to substitute CD19 for minimal residual disease monitoring in B cell precursor acute lymphoblastic leukemia after CD19 targeting. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2022; 102:353-359. [PMID: 35796438 DOI: 10.1002/cyto.b.22088] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 05/23/2022] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The potential loss of CD19 during targeted treatment of B cell precursor acute lymphoblastic leukemia (BCP-ALL) can hamper flow cytometric minimal residual disease (MRD) monitoring. In the current study, we present expression data for antigens that are candidates for CD19 substitution: surface CD22, CD24, CD10, and intracellular (i) CD79a. METHODS Bone marrow samples from 519 consecutive children (below 18 y.o.) with primary BCP-ALL were studied with a focus on expression of CD19, CD10, CD22, CD24, and iCD79a. As these antigens are planned to be used as substitutions for CD19 for primary B cell gating, only total expression on the leukemic population (≥95% cells) was considered appropriate. RESULTS It was found that each of these antigens is totally expressed in nearly 90% of patients. For each single marker, a subgroup of patients without complete positivity presented with BCP-ALL harboring diverse cytogenetic and molecular genetic aberrations. Based on expression data, we have developed algorithm of simultaneous application of these antigens for initial B-lineage compartment gating, that is applicable for nearly all patients after CD19 targeting. CONCLUSION We conclude that the addition of CD22, CD24, and iCD79a to the conventional antibody panel and their application together with CD10 allow for the identification of B-lineage compartment including residual tumor blasts, for MFC-MRD searching in virtually all patients with BCP-ALL after CD19-directed treatment.
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Affiliation(s)
- Ekaterina Mikhailova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Albert Itov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Elena Zerkalenkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Julia Roumiantseva
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Yulia Olshanskaya
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Alexander Karachunskiy
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Galina Novichkova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Michael Maschan
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Alexander Popov
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
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Mikhailova E, Semchenkova A, Illarionova O, Kashpor S, Brilliantova V, Zakharova E, Zerkalenkova E, Zangrando A, Bocharova N, Shelikhova L, Diakonova Y, Zhogov V, Khismatullina R, Molostova O, Buldini B, Raykina E, Larin S, Olshanskaya Y, Miakova N, Novichkova G, Maschan M, Popov AM. Relative expansion of CD19-negative very-early normal B-cell precursors in children with acute lymphoblastic leukaemia after CD19 targeting by blinatumomab and CAR-T cell therapy: implications for flow cytometric detection of minimal residual disease. Br J Haematol 2021; 193:602-612. [PMID: 33715150 DOI: 10.1111/bjh.17382] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 02/05/2021] [Indexed: 12/13/2022]
Abstract
CD19-directed treatment in B-cell precursor acute lymphoblastic leukaemia (BCP-ALL) frequently leads to the downmodulation of targeted antigens. As multicolour flow cytometry (MFC) application for minimal/measurable residual disease (MRD) assessment in BCP-ALL is based on B-cell compartment study, CD19 loss could hamper MFC-MRD monitoring after blinatumomab or chimeric antigen receptor T-cell (CAR-T) therapy. The use of other antigens (CD22, CD10, CD79a, etc.) as B-lineage gating markers allows the identification of CD19-negative leukaemia, but it could also lead to misidentification of normal very-early CD19-negative BCPs as tumour blasts. In the current study, we summarized the results of the investigation of CD19-negative normal BCPs in 106 children with BCP-ALL who underwent CD19 targeting (blinatumomab, n = 64; CAR-T, n = 25; or both, n = 17). It was found that normal CD19-negative BCPs could be found in bone marrow after CD19-directed treatment more frequently than in healthy donors and children with BCP-ALL during chemotherapy or after stem cell transplantation. Analysis of the antigen expression profile revealed that normal CD19-negative BCPs could be mixed up with residual leukaemic blasts, even in bioinformatic analyses of MFC data. The results of our study should help to investigate MFC-MRD more accurately in patients who have undergone CD19-targeted therapy, even in cases with normal CD19-negative BCP expansion.
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Affiliation(s)
- Ekaterina Mikhailova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Alexandra Semchenkova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Olga Illarionova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Svetlana Kashpor
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Varvara Brilliantova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Elena Zakharova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Elena Zerkalenkova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Andrea Zangrando
- Maternal and Child Health Department, University of Padua, Padua, Italy.,Fondazione Istituto di Ricerca Pediatrica Città della Speranza, Padua, Italy
| | | | - Larisa Shelikhova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Yulia Diakonova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Vladimir Zhogov
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Rimma Khismatullina
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Olga Molostova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Barbara Buldini
- Maternal and Child Health Department, University of Padua, Padua, Italy
| | - Elena Raykina
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Sergey Larin
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Yulia Olshanskaya
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Natalia Miakova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Galina Novichkova
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Michael Maschan
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
| | - Alexander M Popov
- National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russian Federation
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Li W, Morgan R, Nieder R, Truong S, Habeebu SSM, Ahmed AA. Normal or reactive minor cell populations in bone marrow and peripheral blood mimic minimal residual leukemia by flow cytometry. CYTOMETRY PART B-CLINICAL CYTOMETRY 2020; 100:590-601. [PMID: 33197125 DOI: 10.1002/cyto.b.21968] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 09/17/2020] [Accepted: 10/26/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND Measurable residual disease (MRD) is a strong independent poor prognostic factor for acute leukemia. Multiparameter flow cytometry (FCM) is a commonly used MRD detection method. However, FCM MRD detection is not well standardized, and the interpretation is subjective. There are normal/reactive minor cell populations in bone marrow (BM) and peripheral blood (PB), which could be confused with MRD. METHODS The FCM data of 231 BM and 44 PB pediatric samples performed in a recent 15-month period were retrospectively reviewed. These samples were from 56 B-lymphoblastic leukemia (B-ALL) patients, 11 T-lymphoblastic leukemia (T-ALL) patients, 28 acute myeloid leukemia (AML)/myelodysplastic syndrome (MDS) patients, 44 cytopenia/leukocytosis patients, and five patients with mycosis fungoides. RESULTS There were over 10 normal or reactive minor cell populations identified with certain phenotypes mimicking MRD of acute leukemia. These mimickers included CD19+ NK cells, CD22+ basophils, CD22+ dendritic cells (DCs), and plasma cells for B-ALL MRD; CD4/8 double-negative T cells, CD4/8 double-positive T cells, cytoplasmic CD3+ NK cells, CD2- T cells, CD7- T cells, CD5- gamma delta T cells, CD56+ NKT cells for T-ALL MRD; CD33+ NK cells, CD117+ NK cells, basophils, plasmacytoid DCs, non-classical monocytes, CD56+ and/or CD61+ monocytes for AML MRD. CONCLUSIONS These data confirm the presence of a variety of normal/reactive minor cell populations that could mimic MRD of acute leukemia by FCM. Recognizing these MRD mimickers is important for correct FCM MRD interpretation.
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Affiliation(s)
- Weijie Li
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Ruth Morgan
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Roxanne Nieder
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Sa Truong
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Sahibu Sultan M Habeebu
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Atif A Ahmed
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, Kansas City, Missouri, USA
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Bärenwaldt A, Läubli H. The sialoglycan-Siglec glyco-immune checkpoint - a target for improving innate and adaptive anti-cancer immunity. Expert Opin Ther Targets 2019; 23:839-853. [PMID: 31524529 DOI: 10.1080/14728222.2019.1667977] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Introduction: During cancer progression, tumor cells develop several mechanisms to prevent killing and to shape the immune system into a tumor-promoting environment. One of such regulatory mechanism is the overexpression of sialic acid (Sia) on carbohydrates of proteins and lipids on tumor cells. Sia-containing glycans or sialoglycans were shown to inhibit immune effector functions of NK cells and T cells by engaging inhibitory Siglec receptors on the surface of these cells. They can also modulate the differentiation of myeloid cells into tumor-promoting M2 macrophages. Areas covered: We review the role of sialoglycans in cancer and introduce the Siglecs, their expression on different immune cells and their interaction with cancer-associated sialoglycans. The targeting of this sialoglycan-Siglec glyco-immune checkpoint is discussed along with potential therapeutic approaches. Pubmed was searched for publications on Siglecs, sialic acid, and cancer. Expert opinion: The targeting of sialoglycan-Siglec interactions has become a major focus in cancer research. New approaches have been developed that directly target sialic acids in tumor lesions. Targeted sialidases that cleave sialic acid specifically in the tumor, have already shown efficacy; efforts targeting the sialoglycan-Siglec pathway for improvement of CAR T cell therapy are ongoing. The sialoglycan-Siglec immune checkpoint is a promising new target for cancer immunotherapy.
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Affiliation(s)
- Anne Bärenwaldt
- Division of Medical Oncology, and Laboratory for Cancer Immunotherapy, Department of Biomedicine, University Hospital Basel , Basel , Switzerland
| | - Heinz Läubli
- Division of Medical Oncology, and Laboratory for Cancer Immunotherapy, Department of Biomedicine, University Hospital Basel , Basel , Switzerland
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Amir EAD, Lee B, Badoual P, Gordon M, Guo XV, Merad M, Rahman AH. Development of a Comprehensive Antibody Staining Database Using a Standardized Analytics Pipeline. Front Immunol 2019; 10:1315. [PMID: 31244854 PMCID: PMC6579881 DOI: 10.3389/fimmu.2019.01315] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 05/23/2019] [Indexed: 12/20/2022] Open
Abstract
Large-scale immune monitoring experiments (such as clinical trials) are a promising direction for biomarker discovery and responder stratification in immunotherapy. Mass cytometry is one of the tools in the immune monitoring arsenal. We propose a standardized workflow for the acquisition and analysis of large-scale mass cytometry experiments. The workflow includes two-tiered barcoding, a broad lyophilized panel, and the incorporation of a fully automated, cloud-based analysis platform. We applied the workflow to a large antibody staining screen using the LEGENDScreen kit, resulting in single-cell data for 350 antibodies over 71 profiling subsets. The screen recapitulates many known trends in the immune system and reveals potential markers for delineating MAIT cells. Additionally, we examine the effect of fixation on staining intensity and identify several markers where fixation leads to either gain or loss of signal. The standardized workflow can be seamlessly integrated into existing trials. Finally, the antibody staining data set is available as an online resource for researchers who are designing mass cytometry experiments in suspension and tissue.
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Affiliation(s)
| | - Brian Lee
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Paul Badoual
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Martin Gordon
- Astrolabe Diagnostics, Inc., Fort Lee, NJ, United States
| | - Xinzheng V Guo
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Miriam Merad
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Adeeb H Rahman
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mt. Sinai, New York, NY, United States
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Angata T. Possible Influences of Endogenous and Exogenous Ligands on the Evolution of Human Siglecs. Front Immunol 2018; 9:2885. [PMID: 30564250 PMCID: PMC6288428 DOI: 10.3389/fimmu.2018.02885] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/23/2018] [Indexed: 12/25/2022] Open
Abstract
Sialic acids, a group of acidic sugars abundantly expressed in the tissues of deuterostome animals but rarely found in microbes, serve as a "signature of self" for these animals. Cognate sensors for sialic acids include Siglecs, a family of transmembrane lectins of vertebrate immune systems that recognize glycans containing sialic acids. A type of sialic acid called N-glycolylneuraminic acid (Neu5Gc) is abundant in many mammalian lineages including great apes, the closest extant relatives of modern human, but was lost in the lineage leading to modern human via the pseudogenization of the CMAH gene encoding the enzyme that converts N-acetylneuraminic acid (Neu5Ac) to Neu5Gc. Loss of Neu5Gc appears to have influenced the evolution of human Siglecs, such as the adjustment of sialic acid binding preferences and the inactivation of at least one Siglec. In addition, various mechanistic studies using model systems and genetic association studies have revealed that some human Siglecs interact with pathogens and influence the outcome of infections, and these pathogens in turn likely influence the evolution of these Siglecs. By understanding the evolutionary forces affecting Siglecs, we shall achieve a better appreciation of Siglec functions, and by understanding Siglec functions, we can obtain deeper insight into the evolutionary processes driving Siglec evolution.
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Affiliation(s)
- Takashi Angata
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
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8
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Heneberg P, Riegerová K, Říhová A, Šimčíková D, Kučera P. Updates on the surface antigens of basophils: CD16 on basophils of patients with respiratory or insect venom allergy and the rejection of CD203c and CD63 externalization decoupling by bisindolylmaleimides. Clin Exp Allergy 2018; 49:54-67. [PMID: 30288810 DOI: 10.1111/cea.13288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 09/06/2018] [Accepted: 09/28/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND CD16 was previously suggested to be a new marker of basophils that is subject to downregulation by FcεRI crosslinking. Certain compounds, including supraoptimal concentrations of the PKC inhibitors, bisindolylmaleimides, decouple the release of granules containing CD203c, CD63 and histamine, and may thus help to identify the mechanisms related to the CD16 externalization. OBJECTIVE We hypothesized that CD16 is differentially expressed on the surface of basophils in patients with birch pollen or insect venom allergy and is subject to a regulation in response to allergens. We also employed CD203c and CD63 externalization decoupling by bisindolylmaleimides. METHODS We performed a basophil activation test coupled with CD16 and histamine detection using cells isolated from patients with allergy to birch pollen or insect venom and negative controls. We employed two PKC inhibitors, bisindolylmaleimide II and Ro 31-8220 at their supraoptimal concentrations and, after difficulties reproducing previously published data, we analyzed the fluorescence of these inhibitors alone. We identified the CD16 isoforms by sequencing nested RT-PCR amplicons from flow cytometry sorted basophils and by cleaving the CD16b GPI anchor using a phospholipase C. RESULTS We provide the first evidence that CD16a is expressed as a surface antigen on a small subpopulation of human basophils in patients with respiratory and insect venom allergy, and this antigen shows increased surface expression following allergen challenge or FcεRI crosslinking. We rejected the apparent decoupling of the surface expression of basophil activation markers following the administration of bisindolylmaleimides. CONCLUSIONS & CLINICAL RELEVANCE The inclusion of αCD16 in negative selection cocktails selects against a subset of basophils that are CD16+ or CD16dim . Using CD16dim basophils and unstained leucocytes, we show that previous studies with supraoptimal concentrations of bisindolylmaleimides are likely flawed and are not associated with the differential expression of CD203c and CD63.
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Affiliation(s)
- Petr Heneberg
- 2nd Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Kamila Riegerová
- Department of Immunology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Adéla Říhová
- Department of Immunology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Daniela Šimčíková
- 2nd Department of Internal Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Petr Kučera
- Department of Immunology, Third Faculty of Medicine, Charles University, Prague, Czech Republic
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9
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Automated database-guided expert-supervised orientation for immunophenotypic diagnosis and classification of acute leukemia. Leukemia 2017; 32:874-881. [PMID: 29089646 PMCID: PMC5886046 DOI: 10.1038/leu.2017.313] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/29/2017] [Accepted: 10/09/2017] [Indexed: 12/14/2022]
Abstract
Precise classification of acute leukemia (AL) is crucial for adequate treatment. EuroFlow has previously designed an AL orientation tube (ALOT) to guide towards the relevant classification panel (T-cell acute lymphoblastic leukemia (T-ALL), B-cell precursor (BCP)-ALL and/or acute myeloid leukemia (AML)) and final diagnosis. Now we built a reference database with 656 typical AL samples (145 T-ALL, 377 BCP-ALL, 134 AML), processed and analyzed via standardized protocols. Using principal component analysis (PCA)-based plots and automated classification algorithms for direct comparison of single-cells from individual patients against the database, another 783 cases were subsequently evaluated. Depending on the database-guided results, patients were categorized as: (i) typical T, B or Myeloid without or; (ii) with a transitional component to another lineage; (iii) atypical; or (iv) mixed-lineage. Using this automated algorithm, in 781/783 cases (99.7%) the right panel was selected, and data comparable to the final WHO-diagnosis was already provided in >93% of cases (85% T-ALL, 97% BCP-ALL, 95% AML and 87% mixed-phenotype AL patients), even without data on the full-characterization panels. Our results show that database-guided analysis facilitates standardized interpretation of ALOT results and allows accurate selection of the relevant classification panels, hence providing a solid basis for designing future WHO AL classifications.
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10
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Cherian S, Miller V, McCullouch V, Dougherty K, Fromm JR, Wood BL. A novel flow cytometric assay for detection of residual disease in patients with B-lymphoblastic leukemia/lymphoma post anti-CD19 therapy. CYTOMETRY PART B-CLINICAL CYTOMETRY 2016; 94:112-120. [DOI: 10.1002/cyto.b.21482] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 06/30/2016] [Accepted: 09/01/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Sindhu Cherian
- Department of Laboratory Medicine; University of Washington; Seattle, WA USA
| | - Valerie Miller
- Department of Laboratory Medicine; University of Washington; Seattle, WA USA
| | - Vivian McCullouch
- Department of Laboratory Medicine; University of Washington; Seattle, WA USA
| | - Katy Dougherty
- Department of Laboratory Medicine; University of Washington; Seattle, WA USA
| | - Jonathan R. Fromm
- Department of Laboratory Medicine; University of Washington; Seattle, WA USA
| | - Brent L. Wood
- Department of Laboratory Medicine; University of Washington; Seattle, WA USA
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Ikoma MRV, Sandes AF, Thiago LS, Cavalcanti Júnior GB, Lorand-Metze IGH, Costa ES, Pimenta G, Santos-Silva MC, Bacal NS, Yamamoto M, Souto EX. First proposed panels on acute leukemia for four-color immunophenotyping by flow cytometry from the Brazilian group of flow cytometry-GBCFLUX. CYTOMETRY PART B-CLINICAL CYTOMETRY 2014; 88:194-203. [DOI: 10.1002/cyto.b.21175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 03/26/2014] [Accepted: 03/28/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Maura R. V. Ikoma
- Hospital Amaral Carvalho; Laboratório de Citometria de Fluxo do Hemonúcleo Regional de Jau; São Paulo Brazil
| | - Alex F. Sandes
- Division of Hematology; Fleury Group; São Paulo Brazil
- Division of Hematology and Blood Transfusion Medicine; Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP-EPM); Brazil
| | - Leandro S. Thiago
- Brazilian National Cancer Institute (INCa), Cancer Research Center; Rio de Janeiro Brazil
| | | | | | - Elaine S. Costa
- Pediatric Institute IPPMG, Universidade Federal do Rio de Janeiro (UFRJ); Rio de Janeiro Brazil
| | - Glicinia Pimenta
- Universidade Federal do Rio de Janeiro; Brazil
- Laboratório Diagnósticos da América; Rio de Janeiro Brazil
| | | | - Nydia S. Bacal
- Hospital Israelita Albert Einstein; São Paulo Brazil
- Centro de Hematologia de; São Paulo
| | - Mihoko Yamamoto
- Division of Hematology and Blood Transfusion Medicine; Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP-EPM); Brazil
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12
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Blüml S, McKeever K, Ettinger R, Smolen J, Herbst R. B-cell targeted therapeutics in clinical development. Arthritis Res Ther 2013; 15 Suppl 1:S4. [PMID: 23566679 PMCID: PMC3624127 DOI: 10.1186/ar3906] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
B lymphocytes are the source of humoral immunity and are thus a critical component of the adaptive immune system. However, B cells can also be pathogenic and the origin of disease. Deregulated B-cell function has been implicated in several autoimmune diseases, including systemic lupus erythematosus, rheumatoid arthritis, and multiple sclerosis. B cells contribute to pathological immune responses through the secretion of cytokines, costimulation of T cells, antigen presentation, and the production of autoantibodies. DNA-and RNA-containing immune complexes can also induce the production of type I interferons, which further promotes the inflammatory response. B-cell depletion with the CD20 antibody rituximab has provided clinical proof of concept that targeting B cells and the humoral response can result in significant benefit to patients. Consequently, the interest in B-cell targeted therapies has greatly increased in recent years and a number of new biologics exploiting various mechanisms are now in clinical development. This review provides an overview on current developments in the area of B-cell targeted therapies by describing molecules and subpopulations that currently offer themselves as therapeutic targets, the different strategies to target B cells currently under investigation as well as an update on the status of novel therapeutics in clinical development. Emerging data from clinical trials are providing critical insight regarding the role of B cells and autoantibodies in various autoimmune conditions and will guide the development of more efficacious therapeutics and better patient selection.
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Affiliation(s)
- Stephan Blüml
- MedImmune, LLC, Department of Research, One MedImmune Way, Gaithersburg, MD 20854, USA
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13
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Hauser A, Schrattbauer K, Najdanovic D, Schlossnickel R, Koch A, Hejtman M, Krugluger W. Optimized quantification of lymphocyte subsets by use of CD7 and CD33. Cytometry A 2013; 83:316-23. [DOI: 10.1002/cyto.a.22245] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 11/17/2012] [Accepted: 11/28/2012] [Indexed: 11/09/2022]
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14
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van Dongen JJM, Lhermitte L, Böttcher S, Almeida J, van der Velden VHJ, Flores-Montero J, Rawstron A, Asnafi V, Lécrevisse Q, Lucio P, Mejstrikova E, Szczepański T, Kalina T, de Tute R, Brüggemann M, Sedek L, Cullen M, Langerak AW, Mendonça A, Macintyre E, Martin-Ayuso M, Hrusak O, Vidriales MB, Orfao A. EuroFlow antibody panels for standardized n-dimensional flow cytometric immunophenotyping of normal, reactive and malignant leukocytes. Leukemia 2012; 26:1908-75. [PMID: 22552007 PMCID: PMC3437410 DOI: 10.1038/leu.2012.120] [Citation(s) in RCA: 662] [Impact Index Per Article: 55.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 02/14/2012] [Accepted: 04/19/2012] [Indexed: 12/21/2022]
Abstract
Most consensus leukemia & lymphoma antibody panels consist of lists of markers based on expert opinions, but they have not been validated. Here we present the validated EuroFlow 8-color antibody panels for immunophenotyping of hematological malignancies. The single-tube screening panels and multi-tube classification panels fit into the EuroFlow diagnostic algorithm with entries defined by clinical and laboratory parameters. The panels were constructed in 2-7 sequential design-evaluation-redesign rounds, using novel Infinicyt software tools for multivariate data analysis. Two groups of markers are combined in each 8-color tube: (i) backbone markers to identify distinct cell populations in a sample, and (ii) markers for characterization of specific cell populations. In multi-tube panels, the backbone markers were optimally placed at the same fluorochrome position in every tube, to provide identical multidimensional localization of the target cell population(s). The characterization markers were positioned according to the diagnostic utility of the combined markers. Each proposed antibody combination was tested against reference databases of normal and malignant cells from healthy subjects and WHO-based disease entities, respectively. The EuroFlow studies resulted in validated and flexible 8-color antibody panels for multidimensional identification and characterization of normal and aberrant cells, optimally suited for immunophenotypic screening and classification of hematological malignancies.
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Affiliation(s)
- J J M van Dongen
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam (Erasmus MC), Rotterdam, The Netherlands.
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15
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Comparison of CD63 Upregulation Induced by NSAIDs on Basophils and Monocytes in Patients with NSAID Hypersensitivity. J Allergy (Cairo) 2011; 2012:580873. [PMID: 22187572 PMCID: PMC3236474 DOI: 10.1155/2012/580873] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Accepted: 09/11/2011] [Indexed: 12/02/2022] Open
Abstract
Background. An in vitro basophil activation test, based on the detection of CD63 upregulation induced by NSAIDs, has been described. Its clinical significance remains controversial. Objectives. In patients with a history of nonallergic NSAID hypersensitivity, stratified according to the severity of the symptoms, to assess with NSAIDs the predictive value of basophil (BAT) and monocyte (MAT) activation tests. Patients/Methods. Sixty patients who had NSAIDs-induced or exacerbated urticaria/angiooedema and 20 controls was included. After incubation with NSAIDs or acetaminophen, leukocytes were analysed for CD63 upregulation. Results. With aspirin, the sensitivity (37%) and specificity (90%) of BAT agree with already published results. In contrast, when patients had had cutaneous and visceral reactions, the frequency of positive BAT 14/22 (64%, P < 0.001) or MAT 10/22 (46%, P < 0.01) were increased. Conclusions. Positive tests were more frequent among patients having a severe hypersensitivity contrasting with the other patients who had results similar to controls.
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Reineks EZ, Osei ES, Rosenberg A, Auletta J, Meyerson HJ. CD22 expression on blastic plasmacytoid dendritic cell neoplasms and reactivity of anti-CD22 antibodies to peripheral blood dendritic cells. CYTOMETRY PART B-CLINICAL CYTOMETRY 2009; 76:237-48. [PMID: 19382197 DOI: 10.1002/cyto.b.20469] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We identified CD22 expression on a blastic plasmacytoid dendritic cell (pDC) neoplasm presenting as a leukemia in a child. CD22 expression, as determined by the antibody s-HCL-1, was also noted on the neoplastic cells from three additional patients with blastic pDC tumors identified at our institution. Subsequently we determined that peripheral blood pDCs react with the s-HCL-1 antibody demonstrating that normal pDCs express CD22. Evaluation of five additional anti-CD22 antibodies indicated that staining of pDCs with these reagents was poor except for s-HCL-1. Therefore, the detection of CD22 on pDCs is best demonstrated with the use of this specific antibody clone. All anti-CD22 antibodies stained conventional DCs. We also evaluated the reactivity of the anti-CD22 antibodies with basophils and noted that the pattern of staining was similar to that seen with pDCs. The studies demonstrate that normal DCs and pDC neoplasms express CD22, and highlight clone specific differences in anti-CD22 antibody reactivity patterns on pDCs and basophils.
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Affiliation(s)
- Edmunds Z Reineks
- Department of Pathology, University Hospitals Case Medical Center, Cleveland, OH 44106, USA
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17
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Tang G, Woods LJ, Wang SA, Brettler D, Andersen M, Miron PM, Pechet L, Woda BA, Hao S. Chronic basophilic leukemia: a rare form of chronic myeloproliferative neoplasm. Hum Pathol 2009; 40:1194-9. [PMID: 19427022 DOI: 10.1016/j.humpath.2009.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2008] [Revised: 02/18/2009] [Accepted: 02/24/2009] [Indexed: 11/17/2022]
Abstract
Chronic basophilic leukemia is a rare and poorly characterized entity. Only a limited number of cases have been described. Herein, we report a patient who presented with fatigue, weight loss, leukocytosis, persistent prominent basophilia, and mild eosinophilia. The bone marrow showed features characteristic of a myeloproliferative neoplasm with a marked increase in maturing basophils. The basophils exhibited nuclear hypersegmentation, abnormal granulation, and abnormally low CD38 expression. Conventional karyotyping revealed a t(5;12)(q31;p13). ETV6 but not PDGFRB rearrangement was detected by fluorescence in situ hybridization.
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MESH Headings
- Aged, 80 and over
- Basophils/pathology
- Bone Marrow Cells/pathology
- Cell Nucleus/pathology
- Chromosomes, Human, Pair 12
- Chromosomes, Human, Pair 5
- Flow Cytometry
- Gene Rearrangement
- Humans
- Immunophenotyping
- In Situ Hybridization, Fluorescence
- Leukemia, Myeloid, Chronic-Phase/genetics
- Leukemia, Myeloid, Chronic-Phase/pathology
- Male
- Proto-Oncogene Proteins c-ets/genetics
- Repressor Proteins/genetics
- Translocation, Genetic/genetics
- ETS Translocation Variant 6 Protein
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Affiliation(s)
- Guilin Tang
- Department of Pathology, University of Massachusetts Medical Center, Worcester, MA 01605, USA
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18
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Meknache N, Jönsson F, Laurent J, Guinnepain MT, Daëron M. Human basophils express the glycosylphosphatidylinositol-anchored low-affinity IgG receptor FcgammaRIIIB (CD16B). THE JOURNAL OF IMMUNOLOGY 2009; 182:2542-50. [PMID: 19201911 DOI: 10.4049/jimmunol.0801665] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Basophils express not only high-affinity IgE receptors, but also low-affinity IgG receptors. Which, among these receptors, are expressed by human basophils is poorly known. Low-affinity IgG receptors comprise CD32 (FcgammaRIIA, FcgammaRIIB, and FcgammaRIIC) and CD16 (FcgammaRIIIA and FcgammaRIIIB). FcgammaRIIA, FcgammaRIIC, and FcgammaRIIIA are activating receptors, FcgammaRIIB are inhibitory receptors, FcgammaRIIIB are GPI-anchored receptors whose function is poorly understood. Basophils were reported to express FcgammaRII, but not FcgammaRIII. We aimed at further identifying basophil IgG receptors. Basophils from normal donors and from patients suffering from an allergic skin disease (atopic dermatitis), allergic respiratory diseases (allergic rhinitis and asthma), or a nonallergic skin disease (chronic urticaria) were examined. We found that normal basophils contain FcgammaRIII transcripts and express FcgammaRIIIB, but not FcgammaRIIIA, which were detected on 24-81% basophils from normal donors and on 12-100% basophils from patients. Noticeably, the proportion of FcgammaRIIIB(+) basophils was significantly lower in atopic dermatitis patients than in other subjects. This decreased FcgammaRIII expression was not correlated with an activated phenotype of basophils in atopic dermatitis patients, although FcgammaRIIIB expression was down-regulated upon basophil activation by anti-IgE. Our results challenge the two dogmas 1) that basophils do not express FcgammaRIII and 2) that FcgammaRIIIB is exclusively expressed by neutrophils. They suggest that a proportion of basophils may be lost during enrichment procedures in which FcgammaRIII(+) cells are discarded by negative sorting using anti-CD16 Abs. They unravel an unexpected complexity of IgG receptors susceptible to modulate basophil activation. They identify a novel systemic alteration in atopic dermatitis.
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Affiliation(s)
- Nihad Meknache
- Institut Pasteur, Département d'Immunologie, Unité d'Allergologie Moléculaire et Cellulaire, Paris, France
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19
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Abuaf N, Rostane H, Rajoely B, Gaouar H, Autegarden JE, Leynadier F, Girot R. Comparison of two basophil activation markers CD63 and CD203c in the diagnosis of amoxicillin allergy. Clin Exp Allergy 2008; 38:921-8. [DOI: 10.1111/j.1365-2222.2008.02960.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Han X, Jorgensen JL, Brahmandam A, Schlette E, Huh YO, Shi Y, Awagu S, Chen W. Immunophenotypic study of basophils by multiparameter flow cytometry. Arch Pathol Lab Med 2008; 132:813-9. [PMID: 18466030 DOI: 10.5858/2008-132-813-isobbm] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2007] [Indexed: 11/06/2022]
Abstract
CONTEXT The immunophenotypic profile of basophils is not yet fully established, and the immunophenotypic changes in chronic myelogenous leukemia are not fully characterized. OBJECTIVE To establish a comprehensive immunophenotypic spectrum of normal basophils and to assess the range of immunophenotypic aberrations of basophils in chronic myelogenous leukemia. DESIGN Using 4-color flow cytometry, we compared the immunophenotypic profile of basophils in peripheral blood or bone marrow samples from 20 patients with no evidence of neoplasia to basophils from 15 patients with chronic myelogenous leukemia. RESULTS Basophils in control cases were all positive for CD9, CD13, CD22, CD25 (dim), CD33, CD36, CD38 (bright), CD45 (dimmer than lymphocytes and brighter than myeloblasts), and CD123 (bright), and were negative for CD19, CD34, CD64, CD117, and HLA-DR. Basophils in all chronic myelogenous leukemia patients possessed 1 to 5 immunophenotypic aberrancies. The most common aberrancies were underexpression of CD38, followed by aberrant expression of CD64 and underexpression of CD123. CD34 and CD117 were present in cases with basophilic precursors. Myeloblasts showed a distinct immunophenotypic profile, as they typically expressed CD34 and CD117, showed dimmer expression (compared with basophils) of CD38, CD45, and CD123, and lacked expression of CD22. CONCLUSIONS Flow cytometric immunophenotyping can identify immunophenotypic aberrations of basophils in chronic myelogenous leukemia, and discriminate basophils from myeloblasts.
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Affiliation(s)
- Xiaohong Han
- Department of Hematopathology, The University of Texas M. D. Anderson Cancer Center, Houston, USA
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21
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Teng YKO, Engels MC, van Laar YM. CD22 is not expressed merely on B cells: Comment on the article by Vos et al. ACTA ACUST UNITED AC 2008; 58:911-2; author reply 912-3. [DOI: 10.1002/art.23282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Ferrari S, Lougaris V, Caraffi S, Zuntini R, Yang J, Soresina A, Meini A, Cazzola G, Rossi C, Reth M, Plebani A. Mutations of the Igbeta gene cause agammaglobulinemia in man. ACTA ACUST UNITED AC 2007; 204:2047-51. [PMID: 17709424 PMCID: PMC2118692 DOI: 10.1084/jem.20070264] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Agammaglobulinemia is a rare primary immunodeficiency characterized by an early block of B cell development in the bone marrow, resulting in the absence of peripheral B cells and low/absent immunoglobulin serum levels. So far, mutations in Btk, mu heavy chain, surrogate light chain, Igalpha, and B cell linker have been found in 85-90% of patients with agammaglobulinemia. We report on the first patient with agammaglobulinemia caused by a homozygous nonsense mutation in Igbeta, which is a transmembrane protein that associates with Igalpha as part of the preBCR complex. Transfection experiments using Drosophila melanogaster S2 Schneider cells showed that the mutant Igbeta is no longer able to associate with Igalpha, and that assembly of the BCR complex on the cell surface is abrogated. The essential role of Igbeta for human B cell development was further demonstrated by immunofluorescence analysis of the patient's bone marrow, which showed a complete block of B cell development at the pro-B to preB transition. These results indicate that mutations in Igbeta can cause agammaglobulinemia in man.
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Affiliation(s)
- Simona Ferrari
- Medical Genetics Unit, S. Orsola-Malpighi University Hospital, 40138 Bologna, Italy.
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23
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Abstract
Although the philosophy of management of patients with chronic lymphocytic leukaemia (CLL) has been altered with the advent of fludarabine-based therapies, impact on long-term survival is unclear and a significant proportion of patients will develop resistance to fludarabine. Similar to other haematological malignancies, a potential for 'cure' is likely to be achieved only if 'high-quality' complete remissions (CRs) are achieved. Treatment options for patients who develop resistance to fludarabine continue to be limited, with only a proportion obtaining a response (usually not CRs) with salvage therapies. This review summarises novel therapies that are being evaluated in patients with CLL, specifically those targeting the antiapoptotic Bcl-2 family of proteins and receptors (e.g., CD40, CD80, HLA-DR) involved in mediating survival signals from the microenvironment.
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MESH Headings
- Animals
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Antibodies, Monoclonal, Humanized
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Apoptosis/drug effects
- B7-1 Antigen/immunology
- Biphenyl Compounds/pharmacology
- Biphenyl Compounds/therapeutic use
- Clinical Trials as Topic
- Drug Evaluation, Preclinical
- HLA-DR Antigens/pharmacology
- HLA-DR Antigens/therapeutic use
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy
- Leukemia, Lymphocytic, Chronic, B-Cell/enzymology
- Nitrophenols
- Oligonucleotides, Antisense/genetics
- Oligonucleotides, Antisense/metabolism
- Oligonucleotides, Antisense/therapeutic use
- Piperazines
- Proto-Oncogene Proteins c-bcl-2/antagonists & inhibitors
- Proto-Oncogene Proteins c-bcl-2/genetics
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Sialic Acid Binding Ig-like Lectin 2/immunology
- Signal Transduction/drug effects
- Sulfonamides
- Thionucleotides/genetics
- Thionucleotides/metabolism
- Thionucleotides/therapeutic use
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Affiliation(s)
- Karen W L Yee
- Department of Leukaemia, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
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24
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van Lochem EG, van der Velden VHJ, Wind HK, te Marvelde JG, Westerdaal NAC, van Dongen JJM. Immunophenotypic differentiation patterns of normal hematopoiesis in human bone marrow: reference patterns for age-related changes and disease-induced shifts. CYTOMETRY PART B-CLINICAL CYTOMETRY 2005; 60:1-13. [PMID: 15221864 DOI: 10.1002/cyto.b.20008] [Citation(s) in RCA: 193] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The abundance of monoclonal antibodies (mAb) and the routine use of quadruple stainings in flow cytometry allow stepwise analysis of bone marrow (BM) samples that are suspected for abnormal hematopoiesis. A screening phase that precedes lineage-specific classification phases should be sufficient to assess whether the BM has a normal or abnormal composition, as well as to identify the abnormal differentiation lineage. METHODS For a quick and easy flow cytometric screening of BM samples, we selected six quadruple immunostainings that cover multiple differentiation stages of the B-cell, monocytic, granulocytic, and erythroid lineages: TdT/CD20/CD19/CD10 and CD45/CD34/CD19/CD22 for B cells, CD34/CD117/CD45/CD13.33 for precursor granulocytic and precursor monocytic cells (myelo/monoblasts), CD14/CD33/CD45/CD34 for monocytic cells, CD16/CD13/CD45/CD11b for granulocytic cells, and CD71/CD235a/CD45/CD117 for erythroid cells. RESULTS The six quadruple immunostainings reveal specific staining patterns in normal BM, which allow the recognition of various subpopulations of the respective lineages. These staining patterns can be used as a frame of reference for recognition of normal and abnormal BM development. Examples of normal (age-related) variations in these otherwise stable staining patterns are presented together with several abnormal differentiation patterns. CONCLUSIONS Although alternative immunostainings can be used (e.g., including NK- and T-cell markers), we feel that the selected six stainings represent a comprehensive and easy screening phase for quick identification of shifts in the composition of the studied differentiation lineages, reflecting age-related changes or disease-induced BM abnormalities.
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Affiliation(s)
- E G van Lochem
- Department of Immunology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
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25
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Abstract
Animal glycan-recognizing proteins can be broadly classified into two groups-lectins (which typically contain an evolutionarily conserved carbohydrate-recognition domain [CRD]) and sulfated glycosaminoglycan (SGAG)-binding proteins (which appear to have evolved by convergent evolution). Proteins other than antibodies and T-cell receptors that mediate glycan recognition via immunoglobulin (Ig)-like domains are called "I-type lectins." The major homologous subfamily of I-type lectins with sialic acid (Sia)-binding properties and characteristic amino-terminal structural features are called the "Siglecs" (Sia-recognizing Ig-superfamily lectins). The Siglecs can be divided into two groups: an evolutionarily conserved subgroup (Siglecs-1, -2, and -4) and a CD33/Siglec-3-related subgroup (Siglecs-3 and -5-13 in primates), which appear to be rapidly evolving. This article provides an overview of historical and current information about the Siglecs.
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Affiliation(s)
- Ajit Varki
- Research Center for Glycoscience, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan.
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26
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Felgar RE. Is "aberrant" antigen expression in acute leukemia always an abnormal finding? Leuk Res 2004; 28:673-4. [PMID: 15158087 DOI: 10.1016/j.leukres.2003.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2003] [Accepted: 12/16/2003] [Indexed: 11/15/2022]
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Abstract
Acute promyelocytic leukaemia (APL) with M3 (or M3v) morphology is the only AML subtype to date for which morphology and immunophenotype agree. In other words, FAB M3 is interchangeable with a unique marker profile. More precisely, we have finally recognized a surrogate marker profile for leukaemia derived from the (15;17) translocation and expressing PML/RARalpha transcripts. To present this as a new development may come as a surprise to many. After all, the antigen expression pattern of AML-M3 was well recognized for many years: absence or weak expression of HLA-DR, CD117, CD15, CD11b and CD34 in the context of a myeloid phenotype (CD33 and CD13 expression) and frequently associated with moderate to high side-scatter appearance upon flow cytometric evaluation, depending upon the degree of granularity of the leukaemic cells. While partially correct, this established APL phenotype is both flawed and limited in its ability to distinguish APL from other AML subtypes, such as natural-killer-cell AML. Given the availability of phenotype-specific therapy for APL, such as all-trans retinoic acid or arsenic trioxide, failing to diagnose APL or misdiagnosing a case of AML with an APL-like phenotype will result in serious clinical consequences. Faced with this dilemma, we have recently performed a comprehensive immunophenotypic analysis of APL patients entered on Eastern Cooperative Oncology Group trials. Our results give diagnostic power to only three antigens, HLA-DR, CD11a and CD18, all of which are characteristically expressed at low levels by APL cells. Despite some significant antigenic differences (e.g. in CD34 expression), this surrogate marker profile for t(15;17) APL applies to both the M3 and the M3v FAB phenotypes and to all three isoforms of the PML/RARalpha transcript.
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MESH Headings
- Antigens, Neoplasm/analysis
- Antigens, Surface/analysis
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/immunology
- Gene Expression Regulation, Neoplastic
- Humans
- Immunophenotyping
- Leukemia, Promyelocytic, Acute/diagnosis
- Leukemia, Promyelocytic, Acute/immunology
- Leukemia, Promyelocytic, Acute/pathology
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Zaiss M, Hirtreiter C, Rehli M, Rehm A, Kunz-Schughart LA, Andreesen R, Hennemann B. CD84 expression on human hematopoietic progenitor cells. Exp Hematol 2003; 31:798-805. [PMID: 12962726 DOI: 10.1016/s0301-472x(03)00187-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE CD84 is a member of the CD2 subgroup of the immunoglobulin receptor superfamily. Members of this family have been implicated in the activation of T cells and NK cells. Expression of CD84 was originally described on most mononuclear blood cells as well as platelets. To elucidate its presence on other blood cell types, we analyzed the expression pattern of CD84 on human immature CD34+ and mature hematopoietic cells. METHODS Expression analysis was carried out by flow cytometry. The differentiation potential of CD84+ progenitor cells was assessed by colony-forming assays and long-term cultures. RT-PCR was used to analyze CD84 mRNA isoforms. RESULTS In addition to monocytes, macrophages, B cells, and some T cells, CD84 is expressed on the cell surface of the majority of granulocytes. In addition, 64%+/-5% of CD34+ progenitor cells isolated from peripheral blood and 30.5%+/-5% from bone marrow of healthy volunteers also express CD84. The majority of CD34+ cells coexpressing lineage antigens were CD84+. In methylcellulose CD34+CD84+ cells formed primarily erythroid colonies, whereas myeloid or mixed colonies were scarce. The frequency of long-term culture-initiating cells in peripheral blood was approximately fivefold higher in CD34+CD84- vs CD34+CD84+ cells. In short-term cultures, 95% of the initially CD34+CD84- cells became CD84+ after 72 hours. CONCLUSIONS CD84 is expressed on cells from almost all hematopoietic lineages and on CD34+ hematopoietic progenitor cells. The proliferative potential of CD34+ cells decreases with increasing CD84 expression, suggesting that CD84 serves as a marker for committed hematopoietic progenitor cells.
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Affiliation(s)
- Matthias Zaiss
- Abteilung für Hämatologie und Internistische Onkologie and Institut für Pathologie, University of Regensburg, Regensburg, Germany.
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29
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Toba K, Hanawa H, Fuse I, Sakaue M, Watanabe K, Uesugi Y, Higuchi W, Takahashi M, Aizawa Y. Difference in CD22 molecules in human B cells and basophils. Exp Hematol 2002; 30:205-11. [PMID: 11882357 DOI: 10.1016/s0301-472x(01)00791-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVE CD22 is believed to be restricted to normal and neoplastic B cells. Human basophils were found to express CD22 molecules. Among the antibodies against CD22, Leu14, which recognized the ligand binding domain, reacted to basophils, and B3 and 4KB128, which recognized the amino terminus side and carboxy terminus side of the ligand binding epitope, respectively, did not. To clarify the difference of CD22 antigenicity in human B cells and basophils, we investigated RNA sequence and structures of CD22 molecules. MATERIALS AND METHODS Purified B cells and basophils were obtained from normal human volunteers by using a MACS magnetic cell sorting system and anti-CD19 and anti-Fc epsilon R1 antibodies, respectively. RT-PCR and sequencing of CD22 mRNA were performed in the exons 3 to 8. Western blotting analysis of CD22 was also performed. RESULTS The sequence of CD22 mRNA extracted from the basophils was the same as that of B cells in exons 3 to 8 (epitopes recognized by Leu14, B3, and 4KB128 were translated from exons 4 and 5). Reduced CD22 peptide extracted from the basophils reacted to Leu14 as well as B3 and 4KB128, and the molecular size of the reduced and nonreduced products was 130 kDa as expected. CONCLUSION Disulfide bonds and the resulting 3D conformation of the CD22 molecules may have important roles in the difference of antigenicity of CD22 beta in B cells (CD22 beta 1) and basophils (CD22 beta 2). The difference in molecular structure surrounding the ligand-binding domain of CD22 may imply a specialization of the conformational forms of CD22 according to the ligand isoforms.
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MESH Headings
- Adult
- Antibodies
- Antigens/immunology
- Antigens, CD/chemistry
- Antigens, CD/genetics
- Antigens, CD/immunology
- Antigens, CD19/immunology
- Antigens, Differentiation, B-Lymphocyte/chemistry
- Antigens, Differentiation, B-Lymphocyte/genetics
- Antigens, Differentiation, B-Lymphocyte/immunology
- B-Lymphocytes/immunology
- Basophils/immunology
- Blotting, Western
- Cell Adhesion Molecules
- Cell Separation/methods
- Disulfides/chemistry
- Exons
- Humans
- Lectins
- Magnetics
- Male
- Protein Conformation
- RNA, Messenger/blood
- RNA, Messenger/chemistry
- Receptors, IgE/immunology
- Reverse Transcriptase Polymerase Chain Reaction
- Sequence Analysis, RNA
- Sialic Acid Binding Ig-like Lectin 2
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Affiliation(s)
- Ken Toba
- First Department of Internal Medicine, Niigata University Hospital, Niigata City, Japan.
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30
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Fagnoni FF, Oliviero B, Zibera C, Gibelli N, Lozza L, Vescovini R, Sansoni P, Zambelli A, DaPrada G, Robustelli della Cuna G. Circulating CD33+ large mononuclear cells contain three distinct populations with phenotype of putative antigen-presenting cells including myeloid dendritic cells and CD14+ monocytes with their CD16+ subset. CYTOMETRY 2001; 45:124-32. [PMID: 11590624 DOI: 10.1002/1097-0320(20011001)45:2<124::aid-cyto1154>3.0.co;2-l] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND In peripheral blood, myeloid markers identify a heterogeneous mixture of cells in transit from the bone marrow to peripheral tissues. Similarly, HLA-class II DR expression usually identifies mononuclear cells with the potential for developing antigen-presenting activity. We gathered putative antigen presenting cells bearing myeloid markers (My-APC) to study their composition by cell surface phenotype. METHODS To gather and dissect My-APC phenotype while excluding lymphocytes and granulocytes, we developed a strategy based on staining red cell-lysed peripheral blood and gating cells bearing myeloid markers and physical parameters of large mononuclear cells. RESULTS Phenotypic analysis within the My-APC gate showed three distinct populations. The largest fraction was constituted by CD14+ monocytes that extended into the other two populations, each expressing gradually lower levels of CD14 surface antigen along with increasing levels of CD16 and CD2, respectively. The CD16 and CD2 expression patterns extended from CD16+CD14+ or CD2+CD14+ double- positive intermediate cells toward each single positive subset, but they were reciprocally exclusive. Interestingly, CD2+CD14- cells within the My-APC gate were equivalent to myeloid dendritic cell precursors (pre-DC) defined previously by the absence of lineage markers and expression of HLA-DR and myeloid markers. Phenotypic analysis of each population revealed differences in the expression of costimulatory molecules and CD62L. CONCLUSIONS This novel analytical approach allowed us to distinguish circulating My-APC in three subsets and to identify relationships between monocytes and other related myeloid populations including DC.
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Affiliation(s)
- F F Fagnoni
- Medical Oncology Division, IRCCS Fondazione S. Maugeri, Clinica del Lavoro e della Riabilitazione, Istituto Scientifico di Pavia, Pavia, Italy.
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31
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Han K, Kim Y, Lee S, Kang CS. CD22 on the human basophils bind differently to anti-CD22 of different manufacturers. CYTOMETRY 2000; 40:251. [PMID: 10878569 DOI: 10.1002/1097-0320(20000701)40:3<251::aid-cyto11>3.0.co;2-d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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