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Li S, Shen D, Guo X, Liao C, Tang Y. Construction, Expression, and Characterization of a Novel Human-Mouse Chimeric Antibody, Hm3A4: A Potential Therapeutic Agent for B and Myeloid Lineage Leukemias. DNA Cell Biol 2018; 37:778-785. [PMID: 30096000 DOI: 10.1089/dna.2018.4199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Antibody-targeting therapy has drawn great interests to the hematologists and oncologists. 3A4, a novel antibody recognizing human CD45RA antigen, is a new target molecule for leukemias and holds a therapeutic potential for myeloid lineage leukemias. However, murine antibodies cannot be safely used in patients because of their strong immune reaction, humanization of the antibodies interested will be an important development step for therapeutic purpose. The aim of this study was to engineer the mouse 3A4 and to investigate the biological activity of its chimeric form. The humanized antibody composed of the 3A4 single-chain fragment of variable region and the human IgG1 Fc region, which was named human-mouse chimeric antibody 3A4 (Hm3A4). The function and biological activities of Hm3A4 were characterized using a variety of biological approaches. The results showed that Hm3A4 retained a strong binding activity to its antigen and could significantly block the binding of parental 3A4 to the antigen. In vitro experiments revealed that Hm3A4 could kill the target cells through complement-dependent cytotoxicity and antibody-dependent cell-mediated cytotoxicity function. In vivo, Hm3A4 showed efficient antileukemia activity outperforming the nontreated mice. In conclusion, the chimeric antibody has an excellent biological activity after humanization and holds targeting therapeutic potential for myeloid leukemia, which warrants further development of this agent.
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Affiliation(s)
- Sisi Li
- Division of Hematology-Oncology, Children's Hospital of Zhejiang University School of Medicine , Hangzhou, People's Republic of China
| | - Diying Shen
- Division of Hematology-Oncology, Children's Hospital of Zhejiang University School of Medicine , Hangzhou, People's Republic of China
| | - Xiaoping Guo
- Division of Hematology-Oncology, Children's Hospital of Zhejiang University School of Medicine , Hangzhou, People's Republic of China
| | - Chan Liao
- Division of Hematology-Oncology, Children's Hospital of Zhejiang University School of Medicine , Hangzhou, People's Republic of China
| | - Yongmin Tang
- Division of Hematology-Oncology, Children's Hospital of Zhejiang University School of Medicine , Hangzhou, People's Republic of China
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Wang Z, Wang Z, Li S, Li B, Sun L, Li H, Lin P, Wang S, Teng W, Zhou X, Ye Z. Decitabine Enhances Vγ9Vδ2 T Cell-Mediated Cytotoxic Effects on Osteosarcoma Cells via the NKG2DL-NKG2D Axis. Front Immunol 2018; 9:1239. [PMID: 29910819 DOI: 10.3389/fimmu.2018.01239] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 05/17/2018] [Indexed: 01/18/2023] Open
Abstract
γδ T cell-based immunotherapy for osteosarcoma (OS) has shown limited success thus far. DNA-demethylating agents not only induce tumor cell death but also have an immunomodulatory function. In this study, we have assessed the potential benefit of combining decitabine (DAC, a DNA demethylation drug) and γδ T cells for OS immunotherapy. DAC increased the expression of natural killer group 2D (NKG2D) ligands (NKG2DLs), including major histocompatibility complex class I-related chains B (MICB) and UL16-binding protein 1 (ULBP1), on the OS cell surface, making the cells more sensitive to recognition and destruction by cytotoxic γδ T cells. The upregulation of MICB and ULBP1 was due to promoter DNA demethylation. Importantly, the killing of OS cells by γδ T cells was partially reversed by blocking the NKG2D receptor, suggesting that the γδ T cell-mediated cytolysis of DAC-pretreated OS cells was mainly dependent on the NKG2D-NKG2DL axis. The in vivo results were consistent with the in vitro results. In summary, DAC could upregulate MICB and ULBP1 expression in OS cells, and combination treatment involving γδ T cell immunotherapy and DAC could be used to enhance the cytotoxic killing of OS cells by γδ T cells.
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Affiliation(s)
- Zhan Wang
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Zenan Wang
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Shu Li
- Cancer Institute, Key Laboratory of Cancer Prevention and Intervention, Key Laboratory of Molecular Biology in Medical Sciences, National Ministry of Education, Department of Hematology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Binghao Li
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Lingling Sun
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Hengyuan Li
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Peng Lin
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Shengdong Wang
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Wangsiyuan Teng
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Xingzhi Zhou
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Zhaoming Ye
- Centre for Orthopaedic Research, Orthopedics Research Institute of Zhejiang University, Department of Orthopaedics, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China
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Schürch CM. Therapeutic Antibodies for Myeloid Neoplasms-Current Developments and Future Directions. Front Oncol 2018; 8:152. [PMID: 29868474 PMCID: PMC5968093 DOI: 10.3389/fonc.2018.00152] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 04/24/2018] [Indexed: 12/12/2022] Open
Abstract
Therapeutic monoclonal antibodies (mAbs) such as antibody-drug conjugates, ligand-receptor antagonists, immune checkpoint inhibitors and bispecific T cell engagers have shown impressive efficacy in the treatment of multiple human cancers. Numerous therapeutic mAbs that have been developed for myeloid neoplasms, including acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS), are currently investigated in clinical trials. Because AML and MDS originate from malignantly transformed hematopoietic stem/progenitor cells-the so-called leukemic stem cells (LSCs) that are highly resistant to most standard drugs-these malignancies frequently relapse and have a high disease-specific mortality. Therefore, combining standard chemotherapy with antileukemic mAbs that specifically target malignant blasts and particularly LSCs or utilizing mAbs that reinforce antileukemic host immunity holds great promise for improving patient outcomes. This review provides an overview of therapeutic mAbs for AML and MDS. Antibody targets, the molecular mechanisms of action, the efficacy in preclinical leukemia models, and the results of clinical trials are discussed. New developments and future studies of therapeutic mAbs in myeloid neoplasms will advance our understanding of the immunobiology of these diseases and enhance current therapeutic strategies.
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Affiliation(s)
- Christian M. Schürch
- Baxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, United States
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Mani R, Goswami S, Gopalakrishnan B, Ramaswamy R, Wasmuth R, Tran M, Mo X, Gordon A, Bucci D, Lucas DM, Mims A, Brooks C, Dorrance A, Walker A, Blum W, Byrd JC, Lozanski G, Vasu S, Muthusamy N. The interleukin-3 receptor CD123 targeted SL-401 mediates potent cytotoxic activity against CD34 +CD123 + cells from acute myeloid leukemia/myelodysplastic syndrome patients and healthy donors. Haematologica 2018; 103:1288-1297. [PMID: 29773600 PMCID: PMC6068035 DOI: 10.3324/haematol.2018.188193] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/15/2018] [Indexed: 11/24/2022] Open
Abstract
Diseases with clonal hematopoiesis such as myelodysplastic syndrome and acute myeloid leukemia have high rates of relapse. Only a small subset of acute myeloid leukemia patients are cured with chemotherapy alone. Relapse in these diseases occurs at least in part due to the failure to eradicate leukemic stem cells or hematopoietic stem cells in myelodysplastic syndrome. CD123, the alpha chain of the interleukin-3 receptor heterodimer, is expressed on the majority of leukemic stem cells and myelodysplastic syndrome hematopoietic stem cells and in 80% of acute myeloid leukemia. Here, we report indiscriminate killing of CD123+ normal and acute myeloid leukemia / myelodysplastic syndrome cells by SL-401, a diphtheria toxin interleukin-3 fusion protein. SL-401 induced cytotoxicity of CD123+ primary cells/blasts from acute myeloid leukemia and myelodysplastic syndrome patients but not CD123− lymphoid cells. Importantly, SL-401 was highly active even in cells expressing low levels of CD123, with minimal effect on modulation of the CD123 target in acute myeloid leukemia. SL-401 significantly prolonged survival of leukemic mice in acute myeloid leukemia patient-derived xenograft mouse models. In addition to primary samples, studies on normal cord blood and healthy marrow show that SL-401 has activity against normal hematopoietic progenitors. These findings indicate potential use of SL-401 as a “bridge-to-transplant” before allogeneic hematopoietic cell transplantation in acute myeloid leukemia / myelodysplastic syndrome patients.
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Affiliation(s)
- Rajeswaran Mani
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Swagata Goswami
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | | | - Rahul Ramaswamy
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Ronni Wasmuth
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Minh Tran
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Xiaokui Mo
- Center for Biostatistics, The Ohio State University, Columbus, OH, USA
| | - Amber Gordon
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Donna Bucci
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - David M Lucas
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Alice Mims
- Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | | | - Adrienne Dorrance
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Alison Walker
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - William Blum
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - John C Byrd
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Gerard Lozanski
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Department of Pathology, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Sumithira Vasu
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Natarajan Muthusamy
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA .,Division of Hematology, Department of Internal Medicine, College of Medicine, The Ohio State University, Columbus, OH, USA
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A Phase I/II Trial of the Combination of Azacitidine and Gemtuzumab Ozogamicin for Treatment of Relapsed Acute Myeloid Leukemia. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2018; 18:346-352.e5. [DOI: 10.1016/j.clml.2018.02.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/16/2018] [Accepted: 02/26/2018] [Indexed: 01/23/2023]
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Abstract
INTRODUCTION There is long-standing interest in drugs targeting the myeloid differentiation antigen CD33 in acute myeloid leukemia (AML). Positive results from randomized trials with the antibody-drug conjugate (ADC) gemtuzumab ozogamicin (GO) validate this approach. Partly stimulated by the success of GO, several CD33-targeted therapeutics are currently in early phase testing. AREAS COVERED CD33-targeted therapeutics in clinical development include Fc-engineered unconjugated antibodies (BI 836858 [mAb 33.1]), ADCs (SGN-CD33A [vadastuximab talirine], IMGN779), radioimmunoconjugates (225Ac-lintuzumab), bi- and trispecific antibodies (AMG 330, AMG 673, AMV564, 161533 TriKE fusion protein), and chimeric antigen receptor (CAR)-modified immune effector cells. Besides limited data on 225Ac-lintuzumab showing modest single-agent activity, clinical data are so far primarily available for SGN-CD33A. SGN-CD33A has single-agent activity and has shown encouraging results when combined with an azanucleoside or standard chemotherapeutics. However, concerns about toxicity to the liver and normal hematopoietic cells - the latter leading to early termination of a phase 3 trial - have derailed the development of SGN-CD33A, and its future is uncertain. EXPERT OPINION Early results from a new generation of CD33-targeted therapeutics are anticipated in the next 2-3 years. Undoubtedly, re-approval of GO in 2017 has changed the landscape and rendered clinical development for these agents more challenging.
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Affiliation(s)
- Roland B Walter
- a Clinical Research Division , Fred Hutchinson Cancer Research Center , Seattle , WA , USA.,b Department of Medicine, Division of Hematology , University of Washington , Seattle , WA , USA.,c Department of Epidemiology , University of Washington , Seattle , WA , USA
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57
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Immune therapies in acute myeloid leukemia: a focus on monoclonal antibodies and immune checkpoint inhibitors. Curr Opin Hematol 2018; 25:136-145. [PMID: 29206680 DOI: 10.1097/moh.0000000000000401] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE OF REVIEW This review discusses the rationale, efficacy, and toxicity of a variety of immune approaches being evaluated in the therapy of acute myeloid leukemia (AML) including naked and conjugated monoclonal antibodies, bispecific T-cell engager antibodies, and immune checkpoint blockade via antibodies targeting cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and programmed-death 1 (PD-1). RECENT FINDINGS The stellar success of immune therapies that harness the power of T cells in solid tumors and an improved understanding of the immune system in patients with hematologic malignancies have resulted in major efforts to develop immune therapies for the treatment of patients with AML. Monoclonal antibodies in AML therapy include naked antibodies against AML surface antigens such as CD33 (e.g. lintuzumab) or CD38 (e.g. daratumumab), antibodies conjugated to toxins in various anti-CD33 (gemtuzumab ozogamicin, SGN33A, IMGN779) and anti-CD123 (SL-401, SGN-CD123A) formulations, and antibodies conjugated to radioactive particles such as I or Ac-labeled anti-CD33 or anti-CD45 antibodies. Additional antigenic targets of interest in AML include CLL1, CD38, CD25, TIM3, FLT3, and others. Approaches to harness the body's own T cells against AML include antibodies that recruit and induce cytotoxicity of tumor cells by T cells (bispecific T-cell engager [BiTE] such as CD33 x CD3 (e.g. AMG 330) or CD123 x CD3 (e.g. flotetuzumab, JNJ-63709178) or antibodies that block immune checkpoint receptors CTLA4 (e.g. ipilimumab) or PD1/PD-L1 (e.g. nivolumab, pembrolizumab, avelumab) on T cells, unleashing the patients' T cells against leukemic cells. SUMMARY The ongoing trials and well designed correlative interrogation of the immune system in patients treated on such trials will further enhance our understanding and clinical application of immune therapies as single-agent and combination approaches for the treatment of AML.
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Gopalakrishnan B, Cheney C, Mani R, Mo X, Bucci D, Walker A, Klisovic R, Bhatnagar B, Walsh K, Rueter B, Waizenegger IC, Heider KH, Blum W, Vasu S, Muthusamy N. Polo-like kinase inhibitor volasertib marginally enhances the efficacy of the novel Fc-engineered anti-CD33 antibody BI 836858 in acute myeloid leukemia. Oncotarget 2018. [PMID: 29515764 PMCID: PMC5839395 DOI: 10.18632/oncotarget.23880] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Acute myeloid leukemia (AML) is the second most common type of leukemia in adults. Incidence of AML increases with age with a peak incidence at 67 years. Patients older than 60 years have an unfavorable prognosis due to resistance to conventional chemotherapy. Volasertib (BI 6727) is a cell-cycle regulator targeting polo-like kinase which has been evaluated in clinical trials in AML. We evaluated effects of volasertib in primary patient samples and NK cells. At equivalent doses, volasertib is cytotoxic to AML blasts but largely spares healthy NK cells. We then evaluated the effect of volasertib treatment in combination with BI 836858 on primary AML blast samples using antibody-dependent cellular cytotoxicity (ADCC) assays. Volasertib treatment of NK cells did not impair NK function as evidenced by comparable levels of BI 836858 mediated ADCC in both volasertib-treated and control-treated NK cells. In summary, volasertib is cytotoxic to AML blasts while sparing NK cell viability and function. Higher BI 836858 mediated ADCC was observed in patient samples pretreated with volasertib. These findings provide a strong rationale to test combination of BI 836858 and volasertib in AML.
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Affiliation(s)
| | - Carolyn Cheney
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Rajeswaran Mani
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Xiaokui Mo
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Center for Biostatistics, Department of Biomedical Informatics, The Ohio State University, Columbus, OH, USA
| | - Donna Bucci
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Alison Walker
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Rebecca Klisovic
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Bhavana Bhatnagar
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Katherine Walsh
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Bjoern Rueter
- Boehringer Ingelheim Pharma GmbH, Biberach/Riss, Germany
| | | | | | - William Blum
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
| | - Sumithira Vasu
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
| | - Natarajan Muthusamy
- Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA.,Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA
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Freud AG, Mundy-Bosse BL, Yu J, Caligiuri MA. The Broad Spectrum of Human Natural Killer Cell Diversity. Immunity 2017; 47:820-833. [PMID: 29166586 DOI: 10.1016/j.immuni.2017.10.008] [Citation(s) in RCA: 429] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 10/07/2017] [Accepted: 10/16/2017] [Indexed: 11/17/2022]
Abstract
Natural killer (NK) cells provide protection against infectious pathogens and cancer. For decades it has been appreciated that two major NK cell subsets (CD56bright and CD56dim) exist in humans and have distinct anatomical localization patterns, phenotypes, and functions in immunity. In light of this traditional NK cell dichotomy, it is now clear that the spectrum of human NK cell diversity is much broader than originally appreciated as a result of variegated surface receptor, intracellular signaling molecule, and transcription factor expression; tissue-specific imprinting; and foreign antigen exposure. The recent discoveries of tissue-resident NK cell developmental intermediates, non-NK innate lymphoid cells, and the capacity for NK cells to adapt and differentiate into long-lived memory cells has added further complexity to this field. Here we review our current understanding of the breadth and generation of human NK cell diversity.
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Affiliation(s)
- Aharon G Freud
- Department of Pathology, The Ohio State University, Columbus, OH 43210, USA; Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH 43210, USA.
| | - Bethany L Mundy-Bosse
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA; Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Jianhua Yu
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA; Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Michael A Caligiuri
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA; Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH 43210, USA.
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60
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Laing AA, Harrison CJ, Gibson BE, Keeshan K. Unlocking the potential of anti-CD33 therapy in adult and childhood acute myeloid leukemia. Exp Hematol 2017; 54:40-50. [DOI: 10.1016/j.exphem.2017.06.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/22/2017] [Accepted: 06/23/2017] [Indexed: 10/19/2022]
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61
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Eksioglu EA, Chen X, Heider KH, Rueter B, McGraw KL, Basiorka AA, Wei M, Burnette A, Cheng P, Lancet J, Komrokji R, Djeu J, List A, Wei S. Novel therapeutic approach to improve hematopoiesis in low risk MDS by targeting MDSCs with the Fc-engineered CD33 antibody BI 836858. Leukemia 2017; 31:2172-2180. [PMID: 28096534 PMCID: PMC5552472 DOI: 10.1038/leu.2017.21] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 11/17/2016] [Accepted: 12/29/2016] [Indexed: 12/18/2022]
Abstract
We recently reported that the accumulation of myeloid-derived suppressor cells (MDSC), defined as CD33+HLA-DR-Lin-, has a direct role in the pathogenesis of myelodysplastic syndrome (MDS). In particular, CD33 is strongly expressed in MDSC isolated from patients with MDS where it has an important role in MDSC-mediated hematopoietic suppressive function through its activation by S100A9. Therefore, we tested whether blocking this interaction with a fully human, Fc-engineered monoclonal antibody against CD33 (BI 836858) suppresses CD33-mediated signal transduction and improves the bone marrow microenvironment in MDS. We observed that BI 836858 can reduce MDSC by antibody-dependent cellular cytotoxicity, which correlated with increases in granule mobilization and cell death. BI 836858 can also block CD33 downstream signaling preventing immune-suppressive cytokine secretion, which correlates with a significant increase in the formation of CFU-GM and BFU-E colonies. Activation of the CD33 pathway can cause reactive oxygen species (ROS)-induced genomic instability but BI 836858 reduced both ROS and the levels of double strand breaks and adducts (measured by comet assay and γH2AX). This work provides the ground for the development of a novel group of therapies for MDS aimed at MDSC and their disease-promoting properties with the goal of improving hematopoiesis in patients.
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Affiliation(s)
- Erika A. Eksioglu
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | - Xianghong Chen
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | | | - Bjoern Rueter
- Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach/Riss, Germany
| | - Kathy L. McGraw
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center, Tampa, FL 33612, USA
| | - Ashley A. Basiorka
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and the Cancer Biology Ph.D. Program, University of South Florida, Tampa, FL 33612, USA
| | - Max Wei
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | - Alexis Burnette
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | - Pinyang Cheng
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | - Jeffrey Lancet
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | - Rami Komrokji
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | | | - Alan List
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
| | - Sheng Wei
- Immunology Program and Malignant Hematology Program, Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, FL 33612
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Abstract
Acute myeloid leukemia (AML) is predominantly a disease of older adults associated with poor long-term outcomes with available therapies. Used as single agents, hypomethylating agents (HMAs) induce only 15 to 25% complete remissions, but current data suggest that median OS observed after HMAs is comparable to that observed after more intensive therapies. Whether long-term cure may be obtained in some patients treated with HMAs is unknown. Combinations of HMAs to novel agents are now extensively investigated and attractive response rates have been reported when combining HMAs to different drug classes. The absence of reliable predictive biomarkers of efficacy of HMAs in AML and the uncertainties regarding their most relevant mechanisms of action hinder the rational design of the combinations to be tested in priority, usually in untreated older AML patients.
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63
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Abstract
OPINION STATEMENT There is no standard of care for older patients with acute myeloid leukemia (AML) unfit for intensive chemotherapy. AML in older patients remains an area of significant unmet need necessitating novel therapeutic strategies. In older patients with normal cytogenetics, molecular variables can be helpful in refining risk. This molecular revolution has promoted a shift in the treatment paradigm of AML. Open new questions concern the necessity of an individualized therapy that may take into account not only an increase in survival but also the maintenance or improvement in terms of quality of life, the management of symptoms, and a maximization of time outside of hospital care. Molecular abnormalities provide the genomic footprint for the development of targeted therapies. Clinical trials testing the activity of these new agents are ongoing and may reshape treatment strategies for these patients. One promising strategy is to combine low-intensity treatments with novel agents.
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Affiliation(s)
- Xavier Thomas
- Department of Hematology, Hospices Civils de Lyon, Lyon-Sud Hospital, Bat.1G, 165 chemin du Grand Revoyet, 69495, Pierre Bénite, France.
| | - Caroline Le Jeune
- Department of Hematology, Hospices Civils de Lyon, Lyon-Sud Hospital, Bat.1G, 165 chemin du Grand Revoyet, 69495, Pierre Bénite, France
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Abstract
INTRODUCTION Epigenetic changes resulting from aberrant methylation patterns are a recurrent observation in hematologic malignancies. Hypomethylating agents have a well-established role in the management of patients with high-risk myelodysplastic syndrome or acute myeloid leukemia. In addition to the direct effects of hypomethylating agents on cancer cells, there are several lines of evidence indicating a role for immune-mediated anti-tumor benefits from hypomethylating therapy. Areas covered: We reviewed the clinical and basic science literature for the effects of hypomethylating agents, including the most commonly utilized therapeutics azacitidine and decitabine, on immune cell subsets. We summarized the effects of hypomethylating agents on the frequency and function of natural killer cells, T cells, and dendritic cells. In particular, we highlight the effects of hypomethylating agents on expression of immune checkpoint inhibitors, leukemia-associated antigens, and endogenous retroviral elements. Expert commentary: In vitro and ex vivo studies indicate mixed effects on the function of natural killer, dendritic cells and T cells following treatment with hypomethylating agents. Clinical correlates of immune function have suggested that hypomethylating agents have immunomodulatory functions with the potential to synergize with immune checkpoint therapy for the treatment of hematologic malignancy, and has become an active area of clinical research.
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Affiliation(s)
- Katherine E Lindblad
- a Myeloid Malignancies Section, Hematology Branch, National Heart Lung and Blood Institute , National Institutes of Health , Bethesda , MD , USA
| | - Meghali Goswami
- a Myeloid Malignancies Section, Hematology Branch, National Heart Lung and Blood Institute , National Institutes of Health , Bethesda , MD , USA
| | - Christopher S Hourigan
- a Myeloid Malignancies Section, Hematology Branch, National Heart Lung and Blood Institute , National Institutes of Health , Bethesda , MD , USA
| | - Karolyn A Oetjen
- a Myeloid Malignancies Section, Hematology Branch, National Heart Lung and Blood Institute , National Institutes of Health , Bethesda , MD , USA
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Fang F, Xiao W, Tian Z. NK cell-based immunotherapy for cancer. Semin Immunol 2017; 31:37-54. [DOI: 10.1016/j.smim.2017.07.009] [Citation(s) in RCA: 156] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 07/24/2017] [Indexed: 12/19/2022]
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Masarova L, Kantarjian H, Garcia-Mannero G, Ravandi F, Sharma P, Daver N. Harnessing the Immune System Against Leukemia: Monoclonal Antibodies and Checkpoint Strategies for AML. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 995:73-95. [PMID: 28321813 DOI: 10.1007/978-3-319-53156-4_4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Acute myeloid leukemia (AML) is the most common leukemia among adults and is associated with a poor prognosis, especially in patients with adverse prognostic factors, older age, or relapsed disease. The last decade has seen a surge in successful immune-based therapies in various solid tumors; however, the role of immune therapies in AML remains poorly defined. This chapter describes the rationale, clinical data, and toxicity profiles of immune-based therapeutic modalities in AML including naked and conjugated monoclonal antibodies, bispecific T-cell engager antibodies, chimeric antigen receptor (CAR)-T cells, and checkpoint blockade via blockade of PD1/PDL1 or CTLA4. Monoclonal antibodies commonly used in AML therapy target highly expressed "leukemia" surface antigens and include (1) naked antibodies against common myeloid markers such as anti-CD33 (e.g., lintuzumab), (2) antibody-drug conjugates linked to either, (a) a highly potent toxin such as calicheamicin, pyrrolobenzodiazepine, maytansine, or others in various anti-CD33 (gemtuzumab ozogamicin, SGN 33A), anti-123 (SL-401), and anti-CD56 (lorvotuzumab mertansine) formulations, or (b) radioactive particles, such as 131I, 213Bi, or 225Ac-labeled anti-CD33 or CD45 antibodies. Novel monoclonal antibodies that recruit and promote proximity-induced cytotoxicity of tumor cells by T cells (bispecific T-cell engager [BiTE] such as anti CD33/CD3, e.g., AMG 330) or block immune checkpoint pathways such as CTLA4 (e.g., ipilimumab) or PD1/PD-L1 (e.g., nivolumab) unleashing the patients T cells to fight leukemic cells are being evaluated in clinical trials in patients with AML. The numerous ongoing clinical trials with immunotherapies in AML will improve our understanding of the biology of AML and allow us to determine the best approaches to immunotherapy in AML.
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MESH Headings
- Animals
- Antibodies, Monoclonal/adverse effects
- Antibodies, Monoclonal/therapeutic use
- Antibody Specificity
- Antineoplastic Agents/adverse effects
- Antineoplastic Agents/therapeutic use
- Biomarkers, Tumor/antagonists & inhibitors
- Biomarkers, Tumor/immunology
- Biomarkers, Tumor/metabolism
- Humans
- Immunotherapy/methods
- Immunotherapy, Adoptive
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/immunology
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/pathology
- Molecular Targeted Therapy
- Signal Transduction/drug effects
- T-Lymphocytes/microbiology
- T-Lymphocytes/transplantation
- Tumor Microenvironment
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Affiliation(s)
- Lucia Masarova
- Department of Leukemia, MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Hagop Kantarjian
- Department of Leukemia, MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | | | - Farhad Ravandi
- Department of Leukemia, MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA
| | - Padmanee Sharma
- Immunotherapy Platform, MD Anderson Cancer Center, Houston, TX, USA
| | - Naval Daver
- Department of Leukemia, MD Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX, 77030, USA.
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Fatehchand K, McMichael EL, Reader BF, Fang H, Santhanam R, Gautam S, Elavazhagan S, Mehta P, Buteyn NJ, Merchand-Reyes G, Vasu S, Mo X, Benson DM, Blachly JS, Carson WE, Byrd JC, Butchar JP, Tridandapani S. Interferon-γ Promotes Antibody-mediated Fratricide of Acute Myeloid Leukemia Cells. J Biol Chem 2016; 291:25656-25666. [PMID: 27780867 DOI: 10.1074/jbc.m116.753145] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 10/12/2016] [Indexed: 01/01/2023] Open
Abstract
Acute myeloid leukemia (AML) is characterized by the proliferation of immature myeloid lineage blasts. Due to its heterogeneity and to the high rate of acquired drug resistance and relapse, new treatment strategies are needed. Here, we demonstrate that IFNγ promotes AML blasts to act as effector cells within the context of antibody therapy. Treatment with IFNγ drove AML blasts toward a more differentiated state, wherein they showed increased expression of the M1-related markers HLA-DR and CD86, as well as of FcγRI, which mediates effector responses to therapeutic antibodies. Importantly, IFNγ was able to up-regulate CD38, the target of the therapeutic antibody daratumumab. Because the antigen (CD38) and effector receptor (FcγRI) were both simultaneously up-regulated on the AML blasts, we tested whether IFNγ treatment of the AML cell lines THP-1 and MV4-11 could stimulate them to target one another after the addition of daratumumab. Results showed that IFNγ significantly increased daratumumab-mediated cytotoxicity, as measured both by 51Cr release and lactate dehydrogenase release assays. We also found that the combination of IFNγ and activation of FcγR led to the release of granzyme B by AML cells. Finally, using a murine NSG model of subcutaneous AML, we found that treatment with IFNγ plus daratumumab significantly attenuated tumor growth. Taken together, these studies show a novel mechanism of daratumumab-mediated killing and a possible new therapeutic strategy for AML.
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Affiliation(s)
- Kavin Fatehchand
- From the Medical Scientist Training Program.,Biomedical Sciences Graduate Program.,Department of Internal Medicine
| | | | | | | | | | | | | | | | | | | | | | - Xiaokui Mo
- Center for Biostatistics, Ohio State University, Columbus, Ohio 43210
| | | | | | - William E Carson
- From the Medical Scientist Training Program.,Biomedical Sciences Graduate Program.,Department of Internal Medicine
| | - John C Byrd
- From the Medical Scientist Training Program.,Biomedical Sciences Graduate Program.,Department of Internal Medicine
| | | | - Susheela Tridandapani
- From the Medical Scientist Training Program, .,Biomedical Sciences Graduate Program.,Department of Internal Medicine.,Molecular, Cellular, and Developmental Biology Program, and
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