1
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Boyd-Gibbins N, Karagiannis P, Hwang DW, Kim SI. iPSCs in NK Cell Manufacturing and NKEV Development. Front Immunol 2022; 13:890894. [PMID: 35874677 PMCID: PMC9305199 DOI: 10.3389/fimmu.2022.890894] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/03/2022] [Indexed: 11/27/2022] Open
Abstract
Natural killer (NK) cell immunotherapies for cancer can complement existing T cell therapies while benefiting from advancements already made in the immunotherapy field. For NK cell manufacturing, induced pluripotent stem cells (iPSCs) offer advantages including eliminating donor variation and providing an ideal platform for genome engineering. At the same time, extracellular vesicles (EVs) have become a major research interest, and purified NK cell extracellular vesicles (NKEVs) have been shown to reproduce the key functions of their parent NK cells. NKEVs have the potential to be developed into a standalone therapeutic with reduced complexity and immunogenicity compared to cell therapies. This review explores the role iPSC technology can play in both NK cell manufacturing and NKEV development.
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Affiliation(s)
| | - Peter Karagiannis
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Do Won Hwang
- Research and Development Center, THERABEST Co., Ltd., Seoul, South Korea
| | - Shin-Il Kim
- THERABEST Japan, Inc., Kobe, Japan
- Research and Development Center, THERABEST Co., Ltd., Seoul, South Korea
- *Correspondence: Shin-Il Kim,
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2
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da Silva LHR, Catharino LCC, da Silva VJ, Evangelista GCM, Barbuto JAM. The War Is on: The Immune System against Glioblastoma—How Can NK Cells Drive This Battle? Biomedicines 2022; 10:biomedicines10020400. [PMID: 35203609 PMCID: PMC8962431 DOI: 10.3390/biomedicines10020400] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/09/2021] [Accepted: 12/16/2021] [Indexed: 11/24/2022] Open
Abstract
Natural killer (NK) cells are innate lymphocytes that play an important role in immunosurveillance, acting alongside other immune cells in the response against various types of malignant tumors and the prevention of metastasis. Since their discovery in the 1970s, they have been thoroughly studied for their capacity to kill neoplastic cells without the need for previous sensitization, executing rapid and robust cytotoxic activity, but also helper functions. In agreement with this, NK cells are being exploited in many ways to treat cancer. The broad arsenal of NK-based therapies includes adoptive transfer of in vitro expanded and activated cells, genetically engineered cells to contain chimeric antigen receptors (CAR-NKs), in vivo stimulation of NK cells (by cytokine therapy, checkpoint blockade therapies, etc.), and tumor-specific antibody-guided NK cells, among others. In this article, we review pivotal aspects of NK cells’ biology and their contribution to immune responses against tumors, as well as providing a wide perspective on the many antineoplastic strategies using NK cells. Finally, we also discuss those approaches that have the potential to control glioblastoma—a disease that, currently, causes inevitable death, usually in a short time after diagnosis.
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Affiliation(s)
- Lucas Henrique Rodrigues da Silva
- Departamento de Imunologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo 05508000, Brazil; (L.H.R.d.S.); (L.C.C.C.); (V.J.d.S.); (G.C.M.E.)
| | - Luana Correia Croda Catharino
- Departamento de Imunologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo 05508000, Brazil; (L.H.R.d.S.); (L.C.C.C.); (V.J.d.S.); (G.C.M.E.)
| | - Viviane Jennifer da Silva
- Departamento de Imunologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo 05508000, Brazil; (L.H.R.d.S.); (L.C.C.C.); (V.J.d.S.); (G.C.M.E.)
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Departamento de Hematologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 0124690, Brazil
| | - Gabriela Coeli Menezes Evangelista
- Departamento de Imunologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo 05508000, Brazil; (L.H.R.d.S.); (L.C.C.C.); (V.J.d.S.); (G.C.M.E.)
| | - José Alexandre Marzagão Barbuto
- Departamento de Imunologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo 05508000, Brazil; (L.H.R.d.S.); (L.C.C.C.); (V.J.d.S.); (G.C.M.E.)
- Laboratory of Medical Investigation in Pathogenesis and Targeted Therapy in Onco-Immuno-Hematology (LIM-31), Departamento de Hematologia, Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo 0124690, Brazil
- Correspondence: ; Tel.: +55-11-3091-7375
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3
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Fitzgerald KN, Quesada AE, von Keudell G, Raj S, Lewis NE, Dogan A, Salles G, Palomba ML. CD19 epitope masking by tafasitamab leads to delays in subsequent use of CD19 CAR T-cell therapy in two patients with aggressive mature B-cell lymphomas. Leuk Lymphoma 2021; 63:751-754. [DOI: 10.1080/10428194.2021.1992622] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Kelly N. Fitzgerald
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Andres E. Quesada
- Department of Hematopathology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | | | - Sandeep Raj
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Natasha E. Lewis
- Department of Hematopathology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Ahmet Dogan
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Gilles Salles
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - M. Lia Palomba
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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4
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Devillier R, Chrétien AS, Pagliardini T, Salem N, Blaise D, Olive D. Mechanisms of NK cell dysfunction in the tumor microenvironment and current clinical approaches to harness NK cell potential for immunotherapy. J Leukoc Biol 2020; 109:1071-1088. [PMID: 32991746 DOI: 10.1002/jlb.5mr0920-198rr] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 09/03/2020] [Accepted: 09/08/2020] [Indexed: 12/13/2022] Open
Abstract
NK cells are innate immune cells with inherent capabilities in both recognizing and killing cancer cells. NK cell phenotypes and functional alterations are being described with increasing precision among patients harboring various cancer types, emphasizing the critical role that NK cells play in antitumor immune responses. In addition, advances in understanding NK cell biology have improved our knowledge of such alterations, thereby expanding the potential exploitation of NK cells' anticancer capabilities. In this review, we present an overview of (1) the various types of NK cell alterations that may contribute to immune evasion in cancer patients and (2) the various strategies to improve NK cell-based anticancer immunotherapies, including pharmacologic modulation and/or genetic modification.
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Affiliation(s)
- Raynier Devillier
- Immunity and Cancer Team, Paoli-Calmettes Institute, Aix-Marseille University, CNRS, INSERM, CRCM, Marseille, France.,Immunomonitoring platform, Paoli-Calmettes Institute, Marseille, France.,Hematology Department, Paoli-Calmettes Institute, Marseille, France
| | - Anne-Sophie Chrétien
- Immunity and Cancer Team, Paoli-Calmettes Institute, Aix-Marseille University, CNRS, INSERM, CRCM, Marseille, France.,Immunomonitoring platform, Paoli-Calmettes Institute, Marseille, France
| | - Thomas Pagliardini
- Immunity and Cancer Team, Paoli-Calmettes Institute, Aix-Marseille University, CNRS, INSERM, CRCM, Marseille, France.,Immunomonitoring platform, Paoli-Calmettes Institute, Marseille, France.,Hematology Department, Paoli-Calmettes Institute, Marseille, France
| | - Nassim Salem
- Immunity and Cancer Team, Paoli-Calmettes Institute, Aix-Marseille University, CNRS, INSERM, CRCM, Marseille, France.,Immunomonitoring platform, Paoli-Calmettes Institute, Marseille, France
| | - Didier Blaise
- Immunity and Cancer Team, Paoli-Calmettes Institute, Aix-Marseille University, CNRS, INSERM, CRCM, Marseille, France.,Immunomonitoring platform, Paoli-Calmettes Institute, Marseille, France.,Hematology Department, Paoli-Calmettes Institute, Marseille, France
| | - Daniel Olive
- Immunity and Cancer Team, Paoli-Calmettes Institute, Aix-Marseille University, CNRS, INSERM, CRCM, Marseille, France.,Immunomonitoring platform, Paoli-Calmettes Institute, Marseille, France
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5
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McNerney KO, Karageorgos SA, Hogarty MD, Bassiri H. Enhancing Neuroblastoma Immunotherapies by Engaging iNKT and NK Cells. Front Immunol 2020; 11:873. [PMID: 32457760 PMCID: PMC7225357 DOI: 10.3389/fimmu.2020.00873] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 04/16/2020] [Indexed: 12/13/2022] Open
Abstract
Neuroblastoma (NB) is the most common extracranial solid tumor in children and, in the high-risk group, has a 5-year mortality rate of ~50%. The high mortality rate and significant treatment-related morbidities associated with current standard of care therapies belie the critical need for more tolerable and effective treatments for this disease. While the monoclonal antibody dinutuximab has demonstrated the potential for immunotherapy to improve overall NB outcomes, the 5-year overall survival of high-risk patients has not yet substantially changed. The frequency and type of invariant natural killer T cells (iNKTs) and natural killer cells (NKs) has been associated with improved outcomes in several solid and liquid malignancies, including NB. Indeed, iNKTs and NKs inhibit tumor associated macrophages (TAMs) and myeloid derived suppressor cells (MDSCs), kill cancer stem cells (CSCs) and neuroblasts, and robustly secrete cytokines to recruit additional immune effectors. These capabilities, and promising pre-clinical and early clinical data suggest that iNKT- and NK-based therapies may hold promise as both stand-alone and combination treatments for NB. In this review we will summarize the biologic features of iNKTs and NKs that confer advantages for NB immunotherapy, discuss the barriers imposed by the NB tumor microenvironment, and examine the current state of such therapies in pre-clinical models and clinical trials.
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Affiliation(s)
- Kevin O McNerney
- Division of Oncology, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Spyridon A Karageorgos
- School of Medicine, European University Cyprus, Nicosia, Cyprus.,Division of Infectious Diseases, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Michael D Hogarty
- Division of Oncology, Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Hamid Bassiri
- Division of Infectious Diseases, Children's Hospital of Philadelphia, Philadelphia, PA, United States
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6
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Lejeune M, Köse MC, Duray E, Einsele H, Beguin Y, Caers J. Bispecific, T-Cell-Recruiting Antibodies in B-Cell Malignancies. Front Immunol 2020; 11:762. [PMID: 32457743 PMCID: PMC7221185 DOI: 10.3389/fimmu.2020.00762] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 04/03/2020] [Indexed: 12/12/2022] Open
Abstract
Bispecific antibodies (BsAbs) are designed to recognize and bind to two different antigens or epitopes. In the last few decades, BsAbs have been developed within the context of cancer therapies and in particular for the treatment of hematologic B-cell malignancies. To date, more than one hundred different BsAb formats exist, including bispecific T-cell engagers (BiTEs), and new constructs are constantly emerging. Advances in protein engineering have enabled the creation of BsAbs with specific mechanisms of action and clinical applications. Moreover, a better understanding of resistance and evasion mechanisms, as well as advances in the protein engineering and in immunology, will help generating a greater variety of BsAbs to treat various cancer types. This review focuses on T-cell-engaging BsAbs and more precisely on the various BsAb formats currently being studied in the context of B-cell malignancies, on ongoing clinical trials and on the clinical concerns to be taken into account in the development of new BsAbs.
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Affiliation(s)
- Margaux Lejeune
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium
| | - Murat Cem Köse
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium
| | - Elodie Duray
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium
| | - Hermann Einsele
- Department of Internal Medicine II, University of Würzburg, Würzburg, Germany
| | - Yves Beguin
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium.,Department of Hematology, CHU de Liège, Liège, Belgium
| | - Jo Caers
- Laboratory of Hematology, GIGA I3, University of Liège, Liège, Belgium.,Department of Hematology, CHU de Liège, Liège, Belgium
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7
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Abstract
PURPOSE OF REVIEW Bispecific antibodies combine antigen recognition sites from two or more antibodies into a single construct allowing simultaneous binding to multiple targets. Bispecific antibodies exist which can redirect immune effector cells against acute myeloid leukemia (AML) targets. This review will highlight the progress to date and the challenges in developing bispecific antibodies for the treatment of AML. RECENT FINDINGS Currently, a number of bispecific antibody formats including bispecific T cell engagers, dual affinity retargeting proteins, and tandem diabodies are in clinical development for AML. These antibodies target antigens present on AML blasts, including CD33, and the low affinity IL3 receptor, CD123. T cell redirecting bispecific antibodies in early phase clinical trials for AML include AG330, flotetuzumab, JNJ-63709178, and AMV564. Bispecific antibodies represent a promising immunotherapeutic approach for the treatment of cancer. The results of ongoing studies in AML will elucidate the potential for these agents in AML.
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Affiliation(s)
- Daniel G Guy
- Division of Oncology, Washington University School of Medicine, 660 S. Euclid Ave, CB 8007, St. Louis, MO, 63110, USA
| | - Geoffrey L Uy
- Division of Oncology, Washington University School of Medicine, 660 S. Euclid Ave, CB 8007, St. Louis, MO, 63110, USA.
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8
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Hu W, Wang G, Huang D, Sui M, Xu Y. Cancer Immunotherapy Based on Natural Killer Cells: Current Progress and New Opportunities. Front Immunol 2019; 10:1205. [PMID: 31214177 PMCID: PMC6554437 DOI: 10.3389/fimmu.2019.01205] [Citation(s) in RCA: 245] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 05/13/2019] [Indexed: 12/15/2022] Open
Abstract
Cancer immunotherapy has been firmly established as a new milestone for cancer therapy, with the development of multiple immune cells as therapeutic tools. Natural killer (NK) cells are innate immune cells endowed with potent cytolytic activity against tumors, and meanwhile act as regulatory cells for the immune system. The efficacy of NK cell-mediated immunotherapy can be enhanced by immune stimulants such as cytokines and antibodies, and adoptive transfer of activated NK cells expanded ex vivo. In addition, NK cells can arm themselves with chimeric antigen receptors (CARs), which may greatly enhance their anti-tumor activity. Most recently, extracellular vesicles (EVs) derived from NK cells show promising anti-tumor effects in preclinical studies. Herein, we carefully review the current progress in these NK cell-based immunotherapeutic strategies (NK cells combined with stimulants, adoptive transfer of NK cells, CAR-NK cells, and NK EVs) for the treatment of cancers, and discussed the challenges and opportunities for opening a new horizon for cancer immunotherapy.
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Affiliation(s)
- Weilei Hu
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Guosheng Wang
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Dongsheng Huang
- Department of Surgery & Clinical Research Institute of Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China.,Center for Cancer Biology and Innovative Therapeutics, Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Hangzhou, China
| | - Meihua Sui
- Department of Surgery & Clinical Research Institute of Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China.,Center for Cancer Biology and Innovative Therapeutics, Key Laboratory of Tumor Molecular Diagnosis and Individualized Medicine of Zhejiang Province, Hangzhou, China
| | - Yibing Xu
- Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China
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9
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Abstract
Natural killer (NK) cells have evolved to complement T and B cells in host defense against pathogens and cancer. They recognize infected cells and tumors using a sophisticated array of activating, costimulatory, and inhibitory receptors that are expressed on NK cell subsets to create extensive functional diversity. NK cells can be targeted to kill with exquisite antigen specificity by antibody-dependent cellular cytotoxicity. NK and T cells share many of the costimulatory and inhibitory receptors that are currently under evaluation in the clinic for cancer immunotherapy. As with T cells, genetic engineering is being employed to modify NK cells to specifically target them to tumors and to enhance their effector functions. As the selective pressures exerted by immunotherapies to augment CD8+T cell responses may result in loss of MHC class I, NK cells may provide an important fail-safe to eliminate these tumors by their capacity to eliminate tumors that are “missing self.”
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Affiliation(s)
- Jeffrey S. Miller
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Lewis L. Lanier
- Department of Microbiology and Immunology, University of California, San Francisco, California 94143, USA
- The Parker Institute for Cancer Immunotherapy, San Francisco, California 94143, USA
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10
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Braciak TA, Roskopf CC, Wildenhain S, Fenn NC, Schiller CB, Schubert IA, Jacob U, Honegger A, Krupka C, Subklewe M, Spiekermann K, Hopfner KP, Fey GH, Aigner M, Krause S, Mackensen A, Oduncu FS. Dual-targeting triplebody 33-16-123 (SPM-2) mediates effective redirected lysis of primary blasts from patients with a broad range of AML subtypes in combination with natural killer cells. Oncoimmunology 2018; 7:e1472195. [PMID: 30228941 PMCID: PMC6140553 DOI: 10.1080/2162402x.2018.1472195] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/13/2018] [Accepted: 04/29/2018] [Indexed: 12/20/2022] Open
Abstract
A number of agents designed for immunotherapy of Acute Myeloid Leukemia (AML) are in preclinical and early clinical development. Most of them target a single antigen on the surface of AML cells. Here we describe the development and key biological properties of a tri-specific agent, the dual-targeting triplebody SPM-2, with binding sites for target antigens CD33 and CD123, and for CD16 to engage NK cells as cytolytic effectors. Primary blasts of nearly all AML patients carry at least one of these target antigens and the pair is particularly promising for the elimination of blasts and leukemia stem cells (LSCs) from a majority of AML patients by dual-targeting agents. The cytolytic activity of NK cells mediated by SPM-2 was analyzed in vitro for primary leukemic cells from 29 patients with a broad range of AML-subtypes. Blasts from all 29 patients, including patients with genomic alterations associated with an unfavorable genetic subtype, were lysed at nanomolar concentrations of SPM-2. Maximum susceptibility was observed for cells with a combined density of CD33 and CD123 above 10,000 copies/cell. Cell populations enriched for AML-LSCs (CD34pos and CD34pos CD38neg cells) from 2 AML patients carried an increased combined antigen density and were lysed at correspondingly lower concentrations of SPM-2 than unsorted blasts. These initial findings raise the expectation that SPM-2 may also be capable of eliminating AML-LSCs and thus of prolonging survival. In the future, patients with a broad range of AML subtypes may benefit from treatment with SPM-2.
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Affiliation(s)
- Todd A. Braciak
- Department of Hematology and Oncology, Medizinische Klinik und Poliklinik III, Klinikum der Universität München, Munich, Germany
| | - Claudia C. Roskopf
- Department of Hematology and Oncology, Medizinische Klinik und Poliklinik III, Klinikum der Universität München, Munich, Germany
| | - Sarah Wildenhain
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-Universität, Munich, Germany
| | - Nadja C. Fenn
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-Universität, Munich, Germany
| | - Christian B. Schiller
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-Universität, Munich, Germany
| | - Ingo A. Schubert
- Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
| | | | | | - Christina Krupka
- Department of Hematology and Oncology, Medizinische Klinik und Poliklinik III, Klinikum der Universität München, Munich, Germany
- Laboratory of Translational Cancer Immunol ogy, Gene Center of the LMU Munich, Munich, Germany
| | - Marion Subklewe
- Department of Hematology and Oncology, Medizinische Klinik und Poliklinik III, Klinikum der Universität München, Munich, Germany
- Laboratory of Translational Cancer Immunol ogy, Gene Center of the LMU Munich, Munich, Germany
| | - Karsten Spiekermann
- Department of Hematology and Oncology, Medizinische Klinik und Poliklinik III, Klinikum der Universität München, Munich, Germany
| | - Karl-Peter Hopfner
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-Universität, Munich, Germany
| | - Georg H. Fey
- Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Michael Aigner
- Department of Internal Medicine 5 - Hematology/Oncology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Stefan Krause
- Department of Internal Medicine 5 - Hematology/Oncology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Andreas Mackensen
- Department of Internal Medicine 5 - Hematology/Oncology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Fuat S. Oduncu
- Department of Hematology and Oncology, Medizinische Klinik und Poliklinik III, Klinikum der Universität München, Munich, Germany
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11
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Schiller CB, Braciak TA, Fenn NC, Seidel UJE, Roskopf CC, Wildenhain S, Honegger A, Schubert IA, Schele A, Lämmermann K, Fey GH, Jacob U, Lang P, Hopfner KP, Oduncu FS. CD19-specific triplebody SPM-1 engages NK and γδ T cells for rapid and efficient lysis of malignant B-lymphoid cells. Oncotarget 2018; 7:83392-83408. [PMID: 27825135 PMCID: PMC5347777 DOI: 10.18632/oncotarget.13110] [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: 06/30/2016] [Accepted: 10/03/2016] [Indexed: 12/19/2022] Open
Abstract
Triplebodies are antibody-derived recombinant proteins carrying 3 antigen-binding domains in a single polypeptide chain. Triplebody SPM-1 was designed for lysis of CD19-bearing malignant B-lymphoid cells through the engagement of CD16-expressing cytolytic effectors, including NK and γδ T cells. SPM-1 is an optimized version of triplebody ds(19-16-19) and includes humanization, disulfide stabilization and the removal of potentially immunogenic sequences. A three-step chromatographic procedure yielded 1.7 - 5.5 mg of purified, monomeric protein per liter of culture medium. In cytolysis assays with NK cell effectors, SPM-1 mediated potent lysis of cancer-derived B cell lines and primary cells from patients with various B-lymphoid malignancies, which surpassed the ADCC activity of the therapeutic antibody Rituximab. EC50-values ranged from 3 to 86 pM. Finally, in an impedance-based assay, SPM-1 mediated a particularly rapid lysis of CD19-bearing target cells by engaging and activating both primary and expanded human γδ T cells from healthy donors as effectors. These data establish SPM-1 as a useful tool for a kinetic analysis of the cytolytic reactions mediated by γδ T and NK cells and as an agent deserving further development towards clinical use for the treatment of B-lymphoid malignancies.
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Affiliation(s)
- Christian B Schiller
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | - Todd A Braciak
- Division of Hematology and Oncology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Nadja C Fenn
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | - Ursula J E Seidel
- Department of General Paediatrics, Oncology/Haematology, University Children's Hospital Tübingen, Tübingen, Germany
| | - Claudia C Roskopf
- Division of Hematology and Oncology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Sarah Wildenhain
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | | | - Ingo A Schubert
- Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Alexandra Schele
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | - Kerstin Lämmermann
- Division of Hematology and Oncology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | | | | | - Peter Lang
- Department of General Paediatrics, Oncology/Haematology, University Children's Hospital Tübingen, Tübingen, Germany
| | - Karl-Peter Hopfner
- Department of Biochemistry and Gene Center, Ludwig-Maximilians-University, Munich, Germany
| | - Fuat S Oduncu
- Division of Hematology and Oncology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
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12
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Grieger E, Gresch G, Niesen J, Woitok M, Barth S, Fischer R, Fendel R, Stein C. Efficient targeting of CD13 on cancer cells by the immunotoxin scFv13-ETA' and the bispecific scFv [13xds16]. J Cancer Res Clin Oncol 2017; 143:2159-2170. [PMID: 28669053 DOI: 10.1007/s00432-017-2468-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 06/23/2017] [Indexed: 02/07/2023]
Abstract
PURPOSE Treatment of cancer using standard chemotherapy still offers a poor prognosis combined with severe side effects. Novel antibody-based therapies have been shown to overcome low efficiency and lack of selectivity by targeting cancer-associated antigens, such as aminopeptidase CD13. METHODS We isolated a high-affinity CD13-specific single-chain fragment variable (scFv13) from a phage display library of V-genes from mice immunized with soluble antigen. An immunotoxin comprising the scFv13 and a truncated version of the exotoxin A of Pseudomonas aeruginosa (ETA', scFv13-ETA') and a bispecific scFv targeting CD13 and CD16 simultaneously (bsscFv[13xds16]) was generated and investigated for their therapeutic potential. RESULTS Both fusion proteins bound specifically to target cells with high affinity. Furthermore, scFv13-ETA' inhibited the proliferation of human cancer cell lines efficiently at low concentrations (IC50 values of 408 pM-7 nM) and induced apoptosis (40-85% of target cells). The bsscFv triggered dose-dependent antibody-dependent cell-mediated cytotoxicity, resulting in the lysis of up to 23.9% A2058 cells, 18.0% MDA-MB-468 cells and 19.1% HL-60 cells. CONCLUSION The provided data demonstrate potent therapeutic activity of the scFv13-ETA' and the bsscFv[13xds16]. The CD13-specific scFv is therefore suitable for the direct and specific delivery of both cytotoxic agents and effector cells to cancer-derived cells, making it ideal for further therapeutic evaluation.
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Affiliation(s)
- Elena Grieger
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany.
- Institute for Applied Medical Engineering, University Hospital RWTH Aachen, Pauwelsstr. 20, 52074, Aachen, Germany.
| | - Gerrit Gresch
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany
- Institute for Applied Medical Engineering, University Hospital RWTH Aachen, Pauwelsstr. 20, 52074, Aachen, Germany
| | - Judith Niesen
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany
| | - Mira Woitok
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany
| | - Stefan Barth
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany
- Institute for Applied Medical Engineering, University Hospital RWTH Aachen, Pauwelsstr. 20, 52074, Aachen, Germany
- Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Anzio Road Observatory, Cape Town, 7925, South Africa
| | - Rainer Fischer
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany
| | - Rolf Fendel
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany
| | - Christoph Stein
- Department of Immunotherapy, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Forckenbeckstr. 6, 52074, Aachen, Germany
- Institute for Applied Medical Engineering, University Hospital RWTH Aachen, Pauwelsstr. 20, 52074, Aachen, Germany
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13
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Davis ZB, Vallera DA, Miller JS, Felices M. Natural killer cells unleashed: Checkpoint receptor blockade and BiKE/TriKE utilization in NK-mediated anti-tumor immunotherapy. Semin Immunol 2017; 31:64-75. [PMID: 28882429 DOI: 10.1016/j.smim.2017.07.011] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 07/26/2017] [Indexed: 10/18/2022]
Abstract
Natural killer (NK) cells have long been known to mediate anti-tumor responses without prior sensitization or recognition of specific tumor antigens. However, the tumor microenvironment can suppress NK cell function resulting in tumor escape and disease progression. Despite recent advances in cytokine therapy and NK cell adoptive transfer, tumor expression of ligands to NK - expressed checkpoint receptors can still suppress NK mediated tumor lysis. This review will explore many of the checkpoint receptors tumors utilize to manipulate the NK cell response as well as some of the current and upcoming pharmacological solutions to limit tumor suppression of NK cell function. Furthermore, we will discuss the potential to use these drugs in combinational therapies with novel antibody reagents such as bi- and tri-specific killer engagers (BiKEs and TriKEs) against tumor-specific antigens to enhance NK cell-mediated tumor rejection.
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Affiliation(s)
- Zachary B Davis
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, United States; Masonic Cancer Center, University of Minnesota, United States
| | - Daniel A Vallera
- Masonic Cancer Center, University of Minnesota, United States; Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota, United States
| | - Jeffrey S Miller
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, United States; Masonic Cancer Center, University of Minnesota, United States.
| | - Martin Felices
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, United States; Masonic Cancer Center, University of Minnesota, United States
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Felices M, Lenvik TR, Davis ZB, Miller JS, Vallera DA. Generation of BiKEs and TriKEs to Improve NK Cell-Mediated Targeting of Tumor Cells. Methods Mol Biol 2016; 1441:333-46. [PMID: 27177679 PMCID: PMC5823010 DOI: 10.1007/978-1-4939-3684-7_28] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Cancer immunotherapies have gained significant momentum over the past decade, particularly with the advent of checkpoint inhibitors and CAR T-cells. While the latter personalized targeted immunotherapy has revolutionized the field, a need for off-the-shelf therapies remains. The ability of NK cells to quickly lyse antibody-coated tumors and potently secrete cytokines without prior priming has made NK cells ideal candidates for antigen-specific immunotherapy. NK cells have been targeted to tumors through two main strategies: mono-specific antibodies and bi/tri-specific antibodies. Mono-specific antibodies drive NK cell antibody-dependent cell-mediated cytotoxicity (ADCC) of tumor cells. Bi/tri-specific antibodies drive re-directed lysis of tumor cells through binding of a tumor antigen and direct binding and crosslinking of the CD16 receptor on NK cells, thus bypassing the need for binding of the Fc portion of mono-specific antibodies. This chapter focuses on the generation of bi- and tri-specific killer engagers (BiKEs and TriKEs) meant to target NK cells to tumors. BiKEs and TriKEs are smaller molecules composed of 2-3 variable portions of antibodies with different specificities, and represent a novel and more versatile strategy compared to traditional bi- and tri-specific antibody platforms.
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Affiliation(s)
- Martin Felices
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Todd R Lenvik
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Zachary B Davis
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Jeffrey S Miller
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN, USA.
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA.
| | - Daniel A Vallera
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
- Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota, Minneapolis, MN, USA
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Wang W, Erbe AK, Hank JA, Morris ZS, Sondel PM. NK Cell-Mediated Antibody-Dependent Cellular Cytotoxicity in Cancer Immunotherapy. Front Immunol 2015; 6:368. [PMID: 26284063 PMCID: PMC4515552 DOI: 10.3389/fimmu.2015.00368] [Citation(s) in RCA: 353] [Impact Index Per Article: 39.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 07/06/2015] [Indexed: 12/21/2022] Open
Abstract
Natural killer (NK) cells play a major role in cancer immunotherapies that involve tumor-antigen targeting by monoclonal antibodies (mAbs). NK cells express a variety of activating and inhibitory receptors that serve to regulate the function and activity of the cells. In the context of targeting cells, NK cells can be "specifically activated" through certain Fc receptors that are expressed on their cell surface. NK cells can express FcγRIIIA and/or FcγRIIC, which can bind to the Fc portion of immunoglobulins, transmitting activating signals within NK cells. Once activated through Fc receptors by antibodies bound to target cells, NK cells are able to lyse target cells without priming, and secrete cytokines like interferon gamma to recruit adaptive immune cells. This antibody-dependent cell-mediated cytotoxicity (ADCC) of tumor cells is utilized in the treatment of various cancers overexpressing unique antigens, such as neuroblastoma, breast cancer, B cell lymphoma, and others. NK cells also express a family of receptors called killer immunoglobulin-like receptors (KIRs), which regulate the function and response of NK cells toward target cells through their interaction with their cognate ligands that are expressed on tumor cells. Genetic polymorphisms in KIR and KIR-ligands, as well as FcγRs may influence NK cell responsiveness in conjunction with mAb immunotherapies. This review focuses on current therapeutic mAbs, different strategies to augment the anti-tumor efficacy of ADCC, and genotypic factors that may influence patient responses to antibody-dependent immunotherapies.
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Affiliation(s)
- Wei Wang
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, USA
| | - Amy K. Erbe
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, USA
| | - Jacquelyn A. Hank
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, USA
| | - Zachary S. Morris
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, USA
| | - Paul M. Sondel
- Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, USA
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, USA
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Abstract
Both acute myeloid leukemia and chronic myeloid leukemia are thought to arise from a subpopulation of primitive cells, termed leukemic stem cells that share properties with somatic stem cells. Leukemic stem cells are capable of continued self-renewal, and are resistant to conventional chemotherapy and are considered to be responsible for disease relapse. In recent years, improved understanding of the underlying mechanisms of myeloid leukemia biology has led to the development of novel and targeted therapies. This review focuses on clinically relevant patent applications and their relevance within the known literature in two areas of prevailing therapeutic interest, namely monoclonal antibody therapy and small molecule inhibitors in disease-relevant signaling pathways.
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Braciak TA, Wildenhain S, Roskopf CC, Schubert IA, Fey GH, Jacob U, Hopfner KP, Oduncu FS. NK cells from an AML patient have recovered in remission and reached comparable cytolytic activity to that of a healthy monozygotic twin mediated by the single-chain triplebody SPM-2. J Transl Med 2013; 11:289. [PMID: 24237598 PMCID: PMC3842817 DOI: 10.1186/1479-5876-11-289] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Accepted: 11/14/2013] [Indexed: 12/26/2022] Open
Abstract
Background The capacity of patient’s Natural Killer cells (NKs) to be activated for cytolysis is an important prerequisite for the success of antibody-derived agents such as single-chain triplebodies (triplebodies) in cancer therapy. NKs recovered from AML patients at diagnosis are often found to be reduced in peripheral blood titers and cytolytic activity. Here, we had the unique opportunity to compare blood titers and cytolytic function of NKs from an AML patient with those of a healthy monozygotic twin. The sibling’s NKs were compared with the patient’s drawn either at diagnosis or in remission after chemotherapy. The cytolytic activities of NKs from these different sources for the patient’s autologous AML blasts and other leukemic target cells in conjunction with triplebody SPM-2, targeting the surface antigens CD33 and CD123 on the AML cells, were compared. Methods Patient NKs drawn at diagnosis were compared to NKs drawn in remission after chemotherapy and a sibling’s NKs, all prepared from PBMCs by immunomagnetic beads (MACS). Redirected lysis (RDL) assays using SPM-2 and antibody-dependent cellular cytotoxicity (ADCC) assays using the therapeutic antibody RituximabTM were performed with the enriched NKs. In addition, MACS-sorted NKs were analyzed for NK cell activating receptors (NCRs) by flow cytometry, and the release of TNF-alpha and IFN-gamma from blood samples of both siblings after the addition of the triplebody were measured in ELISA-assays. Results Patient NKs isolated from peripheral blood drawn in remission produced comparable lysis as NKs from the healthy twin against the patient’s autologous bone marrow (BM) blasts, mediated by SPM-2. The NCR receptor expression profiles on NKs from patient and twin were similar, but NK cell titers in peripheral blood were lower for samples drawn at diagnosis than in remission. Conclusions Peripheral blood NK titers and ex vivo cytolytic activities mediated by triplebody SPM-2 were comparable for cells drawn from an AML patient in remission and a healthy twin. If these results can be generalized, then NKs from AML patients in remission are sufficient in numbers and cytolytic activity to make triplebodies promising new agents for the treatment of AML.
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Affiliation(s)
- Todd A Braciak
- Division of Hematology and Oncology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ziemssenstrasse 1, D-80336 Munich, Germany.
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Kneissl S, Zhou Q, Schwenkert M, Cosset FL, Verhoeyen E, Buchholz CJ. CD19 and CD20 targeted vectors induce minimal activation of resting B lymphocytes. PLoS One 2013; 8:e79047. [PMID: 24244415 PMCID: PMC3823979 DOI: 10.1371/journal.pone.0079047] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 09/18/2013] [Indexed: 11/18/2022] Open
Abstract
B lymphocytes are an important cell population of the immune system. However, until recently it was not possible to transduce resting B lymphocytes with retro- or lentiviral vectors, making them unsusceptible for genetic manipulations by these vectors. Lately, we demonstrated that lentiviral vectors pseudotyped with modified measles virus (MV) glycoproteins hemagglutinin, responsible for receptor recognition, and fusion protein were able to overcome this transduction block. They use either the natural MV receptors, CD46 and signaling lymphocyte activation molecule (SLAM), for cell entry (MV-LV) or the vector particles were further modified to selectively enter via the CD20 molecule, which is exclusively expressed on B lymphocytes (CD20-LV). It has been shown previously that transduction by MV-LV does not induce B lymphocyte activation. However, if this is also true for CD20-LV is still unknown. Here, we generated a vector specific for another B lymphocyte marker, CD19, and compared its ability to transduce resting B lymphocytes with CD20-LV. The vector (CD19ds-LV) was able to stably transduce unstimulated B lymphocytes, albeit with a reduced efficiency of about 10% compared to CD20-LV, which transduced about 30% of the cells. Since CD20 as well as CD19 are closely linked to the B lymphocyte activation pathway, we investigated if engagement of CD20 or CD19 molecules by the vector particles induces activating stimuli in resting B lymphocytes. Although, activation of B lymphocytes often involves calcium influx, we did not detect elevated calcium levels. However, the activation marker CD71 was substantially up-regulated upon CD20-LV transduction and most importantly, B lymphocytes transduced with CD20-LV or CD19ds-LV entered the G1b phase of cell cycle, whereas untransduced or MV-LV transduced B lymphocytes remained in G0. Hence, CD20 and CD19 targeting vectors induce activating stimuli in resting B lymphocytes, which most likely renders them susceptible for lentiviral vector transduction.
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Affiliation(s)
- Sabrina Kneissl
- Molecular Biotechnology and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
| | - Qi Zhou
- Molecular Biotechnology and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
| | - Michael Schwenkert
- Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - François-Loic Cosset
- CIRI, International Center for Infectiology Research, EVIR team, Inserm U1111, CNRS, UMR5308, Université de Lyon-1, ENS de Lyon, Lyon, France
| | - Els Verhoeyen
- CIRI, International Center for Infectiology Research, EVIR team, Inserm U1111, CNRS, UMR5308, Université de Lyon-1, ENS de Lyon, Lyon, France
- INSERM, U895, Centre de Médecine Moléculaire (C3M), équipe 3, Nice, France
| | - Christian J. Buchholz
- Molecular Biotechnology and Gene Therapy, Paul-Ehrlich-Institut, Langen, Germany
- * E-mail:
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20
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Wiernik A, Foley B, Zhang B, Verneris MR, Warlick E, Gleason MK, Ross JA, Luo X, Weisdorf DJ, Walcheck B, Vallera DA, Miller JS. Targeting natural killer cells to acute myeloid leukemia in vitro with a CD16 x 33 bispecific killer cell engager and ADAM17 inhibition. Clin Cancer Res 2013; 19:3844-55. [PMID: 23690482 DOI: 10.1158/1078-0432.ccr-13-0505] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
PURPOSE The graft versus leukemia effect by natural killer (NK) cells prevents relapse following hematopoietic stem cell transplantation. We determined whether a novel bispecific killer cell engager (BiKE) signaling through CD16 and targeting CD33 could activate NK cells at high potency against acute myelogenous leukemia (AML) targets. EXPERIMENTAL DESIGN We investigated the ability of our fully humanized CD16 × CD33 (CD16 × 33) BiKE to trigger in vitro NK cell activation against HL60 (CD33(+)), RAJI (CD33(-)), and primary AML targets (de novo and refractory) to determine whether treatment with CD16 × 33 BiKE in combination with an ADAM17 inhibitor could prevent CD16 shedding (a novel inhibitory mechanism induced by NK cell activation) and overcome inhibition of class I MHC recognizing inhibitory receptors. RESULTS NK cell cytotoxicity and cytokine release were specifically triggered by the CD16 × 33 BiKE when cells were cultured with HL60 targets, CD33(+) de novo and refractory AML targets. Combination treatment with CD16 × 33 BiKE and ADAM17 inhibitor resulted in inhibition of CD16 shedding in NK cells, and enhanced NK cell activation. Treatment of NK cells from double umbilical cord blood transplant (UCBT) recipients with the CD16 × 33 BiKE resulted in activation, especially in those recipients with cytomegalovirus reactivation. CONCLUSION CD16 × 33 BiKE can overcome self-inhibitory signals and effectively elicit NK cell effector activity against AML. These in vitro studies highlight the potential of CD16 × 33 BiKE ± ADAM17 inhibition to enhance NK cell activation and specificity against CD33(+) AML, which optimally could be applied in patients with relapsed AML or for adjuvant antileukemic therapy posttransplantation.
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Affiliation(s)
- Andres Wiernik
- Division of Hematology, Oncology, and Transplantation, Department of Medicine, Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
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21
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Gleason MK, Verneris MR, Todhunter DA, Zhang B, McCullar V, Zhou SX, Panoskaltsis-Mortari A, Weiner LM, Vallera DA, Miller JS. Bispecific and trispecific killer cell engagers directly activate human NK cells through CD16 signaling and induce cytotoxicity and cytokine production. Mol Cancer Ther 2012; 11:2674-84. [PMID: 23075808 DOI: 10.1158/1535-7163.mct-12-0692] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
This study evaluates the mechanism by which bispecific and trispecific killer cell engagers (BiKEs and TriKEs) act to trigger human natural killer (NK) cell effector function and investigates their ability to induce NK cell cytokine and chemokine production against human B-cell leukemia. We examined the ability of BiKEs and TriKEs to trigger NK cell activation through direct CD16 signaling, measuring intracellular Ca²⁺ mobilization, secretion of lytic granules, induction of target cell apoptosis, and production of cytokine and chemokines in response to the Raji cell line and primary leukemia targets. Resting NK cells triggered by the recombinant reagents led to intracellular Ca²⁺ mobilization through direct CD16 signaling. Coculture of reagent-treated resting NK cells with Raji targets resulted in significant increases in NK cell degranulation and target cell death. BiKEs and TriKEs effectively mediated NK cytotoxicity of Raji targets at high and low effector-to-target ratios and maintained functional stability after 24 and 48 hours of culture in human serum. NK cell production of IFN-γ, TNF-α, granulocyte macrophage colony-stimulating factor (GM-CSF), interleukin (IL)-8, macrophage inflammatory protein (MIP)-1α, and regulated and normal T cell expressed and secreted (RANTES) was differentially induced in the presence of recombinant reagents and Raji targets. Moreover, significant increases in NK cell degranulation and enhancement of IFN-γ production against primary acute lymphoblastic leukemia and chronic lymphocytic leukemia targets were induced with reagent treatment of resting NK cells. In conclusion, BiKEs and TriKEs directly trigger NK cell activation through CD16, significantly increasing NK cell cytolytic activity and cytokine production against tumor targets, showing their therapeutic potential for enhancing NK cell immunotherapies for leukemias and lymphomas.
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Affiliation(s)
- Michelle K Gleason
- Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota Masonic Cancer Center, Minneapolis, Minnesota, USA
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22
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Pörtner LM, Schönberg K, Hejazi M, Brünnert D, Neumann F, Galonska L, Reusch U, Little M, Haas R, Uhrberg M. T and NK cells of B cell NHL patients exert cytotoxicity against lymphoma cells following binding of bispecific tetravalent antibody CD19 × CD3 or CD19 × CD16. Cancer Immunol Immunother 2012; 61:1869-75. [PMID: 22976535 PMCID: PMC11028742 DOI: 10.1007/s00262-012-1339-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 08/09/2012] [Indexed: 10/27/2022]
Abstract
Bispecific tetravalent antibodies (TandAb) directed against the B cell surface marker CD19 and activating receptors on T or NK cells (CD19 × CD3 or CD19 × CD16) have shown promising effects in vitro and in preclinical studies. Here, we examine the cytotoxic efficacy of T and NK cells from patients with B cell Non-Hodgkin's Lymphoma (NHL) against B-lymphoma cells following the binding of the matching TandAb. The addition of CD19 × CD16 TandAb led to a threefold increase in NK cell activation in the presence of B-lymphoma cells. Similarly, T cells displayed a sevenfold increase in cytotoxic activity after the addition of CD19 × CD3 TandAb. Comparison of T and NK cell effector function of patients and healthy controls showed comparable levels of cytotoxic activity in response to lymphoma cells and no reduction in functional activity due to age, disease stage or the type and amount of previous therapy. Thus, T and NK cells of patients with B cell NHL are fully capable of being activated by therapeutic crosslinking antibodies. These results provide a rationale for the use of TandAbs for patients with B cell NHL, particularly in cases where remission with minimal residual disease could be achieved by cytotoxic chemotherapy.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antibodies, Bispecific/immunology
- Antibodies, Bispecific/pharmacology
- Antigens, CD19/immunology
- Antineoplastic Agents/immunology
- Antineoplastic Agents/pharmacology
- CD3 Complex/immunology
- Cells, Cultured
- Female
- GPI-Linked Proteins/immunology
- Humans
- Killer Cells, Natural/immunology
- Lymphocyte Activation/drug effects
- Lymphocyte Activation/immunology
- Lymphoma, B-Cell/immunology
- Lymphoma, B-Cell/therapy
- Male
- Middle Aged
- Receptors, IgG/immunology
- T-Lymphocytes, Cytotoxic/immunology
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Affiliation(s)
- Lisa M Pörtner
- Department of Hematology, Oncology and Clinical Immunology, Heinrich-Heine-University, Düsseldorf, Germany.
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23
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Schubert I, Kellner C, Stein C, Kügler M, Schwenkert M, Saul D, Stockmeyer B, Berens C, Oduncu FS, Mackensen A, Fey GH. A recombinant triplebody with specificity for CD19 and HLA-DR mediates preferential binding to antigen double-positive cells by dual-targeting. MAbs 2012; 4:45-56. [PMID: 22327429 DOI: 10.4161/mabs.4.1.18498] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
To test the hypothesis that dual-targeting confers the novel ability of selective binding to antigen double-positive over antigen single-positive cells, a single-chain triplebody (sctb), HLA-ds16-hu19, was produced and characterized. The molecule carries three single-chain Fv (scFv) antibody fragments in a single polypeptide chain, the two distal ones specific for the human histocompatibility protein HLA-DR and the B-lymphoid cell surface protein CD19, the central one for CD16, the human low affinity Fc-receptor FcγRIII. For comparison, the bispecific scFvs (bsscFv) hu19-ds16 and HLA-ds16 were also produced. All CD16 binding modules are disulfide-stabilized (ds). The sctb bound simultaneously to both CD19 and HLA-DR on the same cancer cell and, thus, showed functional dual-targeting. In a mixing-experiment with HLA-DR single-positive HUT-78 cells and (HLA-DR plus CD19) double-positive SEM cells, the triplebody showed preferential binding to the double-positive cells, even when the single-positive cells were present in a numerical excess of up to 20-fold. In antibody-dependent cellular cytotoxicity experiments with mononuclear cells as effector cells, the sctb promoted equal lysis of Raji cells, an antigen double-positive cell line, at 130-fold lower concentrations than the bsscFv hu19-ds16, indicating that both distal scFvs of the sctb contributed to tumor cell lysis. A panel of stably-transfected HEK293 cell lines was generated that included CD19- and HLA-DR single-positive and (HLA-DR plus CD19) double-positive lines with antigen-surface densities varying over a broad range. Using a pair of cell lines with matching densities, the sctb eliminated double-positive target cells preferentially single-positive cells. This ability of preferential or selective targeting of antigen double-positive over single-positive cells opens attractive new perspectives for the use of dual-targeting sctbs in cancer therapy.
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Affiliation(s)
- Ingo Schubert
- Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany.
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Glorius P, Baerenwaldt A, Kellner C, Staudinger M, Dechant M, Stauch M, Beurskens FJ, Parren PWHI, Winkel JGJVD, Valerius T, Humpe A, Repp R, Gramatzki M, Nimmerjahn F, Peipp M. The novel tribody [(CD20)2xCD16] efficiently triggers effector cell-mediated lysis of malignant B cells. Leukemia 2012; 27:190-201. [DOI: 10.1038/leu.2012.150] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Asano R, Nakayama M, Kawaguchi H, Kubota T, Nakanishi T, Umetsu M, Hayashi H, Katayose Y, Unno M, Kudo T, Kumagai I. Construction and humanization of a functional bispecific EGFR × CD16 diabody using a refolding system. FEBS J 2011; 279:223-33. [PMID: 22074399 DOI: 10.1111/j.1742-4658.2011.08417.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We previously reported the construction and activity of a humanized, bispecific diabody (hEx3) that recruited T cells towards an epidermal growth factor receptor (EGFR) positive tumor. Herein, we describe the construction of a second functional, fully humanized, anti-EGFR bispecific diabody that recruits another subset of lymphocyte effectors, the natural killer cells, to EGFR-expressing tumor cells. After we confirmed that an anti-EGFR × anti-CD16 bispecific diabody (Ex16) consisting of a previously humanized anti-EGFR variable fragment (Fv) and a mouse anti-CD16 Fv had growth inhibitory activity, we designed a humanized anti-CD16 Fv to construct the fully humanized Ex16 (hEx16). However, the humanized form had lower activity for inhibition of cancer growth. To restore its growth inhibitory activity, we introduced mutations into the Vernier zone, which is located near the complementarity-determining regions and is involved in their binding activity. We efficiently prepared 15 different hEx16 mutants by expressing each chimeric single-chain component for hEx16 separately. We then used our in vitro refolding system to select the most functional mutant, which had a growth inhibitory effect comparable with that of the commercially available chimeric anti-EGFR antibody, cetuximab. Our refolding system could aid in the efficient optimization of other proteins with heterodimeric structure.
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Affiliation(s)
- Ryutaro Asano
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
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27
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Schubert I, Kellner C, Stein C, Kügler M, Schwenkert M, Saul D, Mentz K, Singer H, Stockmeyer B, Hillen W, Mackensen A, Fey GH. A single-chain triplebody with specificity for CD19 and CD33 mediates effective lysis of mixed lineage leukemia cells by dual targeting. MAbs 2011; 3:21-30. [PMID: 21081841 DOI: 10.4161/mabs.3.1.14057] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A single-chain triplebody (sctb) 33-ds16-ds19 comprising two distal single-chain Fv fragments (scFvs) specific for the lymphoid antigen CD19 and the myeloid antigen CD33 flanking a central scFv specific for CD16, which is the low affinity Fc-receptor (FcγRIII) present on natural killer cells and macrophages, was produced and its properties were investigated. CD33 and CD19 in combination are present on acute leukemiablasts with mixed lineage phenotype, but not on normal human hematopoietic cells. For comparison, two bispecific scFvs (bsscFvs), ds19-ds16 and 33-ds16, with monovalent binding to CD19 and CD33, respectively, were also studied. The sctb 33-ds16-ds19 specifically interacted with all 3 antigens. On the antigen double-positive cell line BV-173, the sctb bound with 2-fold greater avidity than bsscFv ds19-ds16 (KD = 21 vs. 42 nM) and with 1.4-fold greater avidity than bsscFv 33-ds16 (KD = 29 nM). All 3 fusion proteins had similar affinity for CD16 and sufficient thermic stability in human serum. In antibody-dependent cellular cytotoxicity (ADCC) reactions with human mononuclear cells as effectors, the sctb promoted lysis of BV-173 cells at 23-fold lower concentrations than bsscFv ds19-ds16 and at 1.4-fold lower concentrations than bsscFv 33-ds16. The sctb also mediated potent ADCC of the antigen double-positive mixed lineage leukemia cell line SEM, and the half-maximal concentration EC50 for BV-173 cells was 7 pM. Therefore, CD19 and CD33 are present on the surface of these leukemic cell lines such that they can be connected by a single sctb molecule, permitting the recruitment of NK cells via CD16 and tumor cell lysis.
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Affiliation(s)
- Ingo Schubert
- Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany.
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28
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Effective elimination of acute myeloid leukemic cells by recombinant bispecific antibody derivatives directed against CD33 and CD16. J Immunother 2010; 33:599-608. [PMID: 20551837 DOI: 10.1097/cji.0b013e3181dda225] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Single-chain Fv triplebodies (sctb), consisting of a single polypeptide chain with 3 single-chain antibody variable fragments connected in tandem, were generated as antileukemic agents. A CD19-specific sctb of this format has previously been shown to be superior to a bispecific single-chain Fv antibody fragment (bsscFv) for the elimination of leukemic B-lineage cells, but corresponding targeted agents for the treatment of acute myeloid leukemia are still lacking. For this purpose, both a bsscFv and a sctb specific for CD33 and the trigger molecule CD16 (FcgammaRIII) were produced. The sctb displayed 3.5-fold greater avidity for CD33 than the bsscFv 33xds16, whereas both had close to equal affinity for CD16. In antibody-dependent cellular cytotoxicity (ADCC) reactions with human mononuclear cells as effectors, both the bsscFv 33xds16 and the sctb induced lysis of tumor cells with half maximum effective concentrations (EC50) in the low picomolar range. It is interesting to note that the sctb promoted equal lysis of human leukemia-derived cell lines at 10 to 200-fold lower concentrations than the bsscFv. Both molecules mediated ADCC of primary patient cells. In conclusion, both the bsscFv 33xds16 and the sctb 33xds16x33 eliminated acute myeloid leukemia cells in ADCC reactions, but the novel sctb format showed significantly greater specific activity.
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29
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Stein C, Kellner C, Kügler M, Reiff N, Mentz K, Schwenkert M, Stockmeyer B, Mackensen A, Fey GH. Novel conjugates of single-chain Fv antibody fragments specific for stem cell antigen CD123 mediate potent death of acute myeloid leukaemia cells. Br J Haematol 2010; 148:879-89. [PMID: 20064159 DOI: 10.1111/j.1365-2141.2009.08033.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Four new single-chain Fv antibody fragments (scFvs) specific for the human leucocyte surface antigen CD123 (interleukin-3 receptor alpha) were generated to achieve preferential targeting of leukaemia stem cells (LSCs) in acute myeloid leukaemia (AML). The scFvs were isolated from a phage display library generated with spleen RNA from mice, immunized with a fusion protein consisting of the extracellular domain of CD123 and the Fc domain of a human immunoglobulin G1. The scFvs displayed CD123-specific binding on tumour cells (binding constants (K(D)) 4.5-101 nmol/l). The scFv with the highest affinity was used to design two cell death-inducing molecules. First, an immunotoxin, a fusion protein with truncated Pseudomonas Exotoxin A, induced potent apoptosis of AML-derived MOLM-13 and SKNO-1 cells at nanomolar concentrations. Second, the fusion to another scFv, specific for the low affinity Fcgamma-receptor III (CD16), created a bispecific single chain Fv (bsscFv). This bsscFv [123 x ds16] mediated potent lysis of AML-derived MOLM-13, THP-1 and SKNO-1 cells in antibody-dependent cellular cytotoxicity (ADCC) reactions at picomolar concentrations. The recruitment of CD16-positive effector cells for the lysis of AML cells via CD123 represents a novel combination with attractive prospects for future clinical testing.
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Affiliation(s)
- Christoph Stein
- Chair of Genetics, University of Erlangen-Nuremberg, Erwin-Rommel-Strasse 3, Erlangen, Germany.
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30
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Cardarelli PM, Rao-Naik C, Chen S, Huang H, Pham A, Moldovan-Loomis MC, Pan C, Preston B, Passmore D, Liu J, Kuhne MR, Witte A, Blanset D, King DJ. A nonfucosylated human antibody to CD19 with potent B-cell depletive activity for therapy of B-cell malignancies. Cancer Immunol Immunother 2010; 59:257-65. [PMID: 19657637 PMCID: PMC11030752 DOI: 10.1007/s00262-009-0746-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2009] [Accepted: 07/20/2009] [Indexed: 12/18/2022]
Abstract
A human anti-CD19 antibody was expressed in fucosyltransferase-deficient CHO cells to generate nonfucosylated MDX-1342. Binding of MDX-1342 to human CD19-expressing cells was similar to its fucosylated parental antibody. However, MDX-1342 exhibited increased affinity for FcγRIIIa-Phe158 and FcγRIIIa-Val158 receptors as well as enhanced effector cell function, as demonstrated by increased potency and efficacy in antibody-dependent cellular cytotoxicity (ADCC) and phagocytosis assays. MDX-1342 showed dose-dependent improvement in survival using a murine B-cell lymphoma model in which Ramos cells were administered systemically. In addition, low nanomolar binding to cynomolgus monkey CD19 and increased affinity for cynomolgus monkey FcγRIIIa was observed. In vivo administration of MDX-1342 in cynomolgus monkeys revealed potent B-cell depletion, suggesting its potential utility as a B-lymphocyte depletive therapy for malignancies and autoimmune indications.
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Affiliation(s)
- Pina M Cardarelli
- Department of Cell Biology and Pharmacology, Medarex, 1324 Chesapeake Terrace, Sunnyvale, CA 94089, USA.
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31
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A novel CD19-directed recombinant bispecific antibody derivative with enhanced immune effector functions for human leukemic cells. J Immunother 2009; 31:871-84. [PMID: 18833000 DOI: 10.1097/cji.0b013e318186c8b4] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel bispecific antibody-derived recombinant protein targeting leukemias and lymphomas was designed, a single-chain Fv triple body (sctb) consisting of 1 polypeptide chain with 3 scFvs connected in tandem. The distal scFvs were specific for the tumor antigen CD19, and the central scFv for the trigger molecule CD16 (FcgammaRIII) on natural killer (NK) cells and macrophages. We had previously built a disulphide stabilized (ds) bsscFv [19 x 16] with monovalent binding for CD19 from ds components. The sctb ds[19 x 16 x 19] also used ds components and displayed 3-fold greater avidity for CD19 than the bsscFv (KD = 13 vs. 42 nM), whereas both had equal affinity for CD16 (KD = 58 nM). Plasma half-lives in mice were 4 and 2 hours for the sctb and the bsscFv, respectively. In antibody-dependent cellular cytotoxicity reactions with human mononuclear cells as effectors, the sctb promoted equal lysis of leukemic cell lines and primary cells from leukemia and lymphoma patients at 10-fold to 40-fold lower concentrations than the bsscFv. This new format may also be applicable to a variety of other tumor antigens and effector molecules. With half-maximum effective concentrations (EC50) in the low picomolar range, the sctb ds[19 x 16 x 19] is an attractive candidate for further preclinical evaluation.
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32
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Tobin E, Denardo G, Zhang N, Epstein AL, Liu C, Denardo S. Combination immunotherapy with anti-CD20 and anti-HLA-DR monoclonal antibodies induces synergistic anti-lymphoma effects in human lymphoma cell lines. Leuk Lymphoma 2009; 48:944-56. [PMID: 17487739 DOI: 10.1080/10428190701272272] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Rituximab is effective in about one half of patients with indolent lymphoma. Even these patients relapse and develop rituximab resistance. To increase potency and circumvent resistance, the anti-lymphoma effects of rituximab, an anti-CD20 MAb(1), combined with chLym-1(2), an anti-HLA-DR MAb, were assessed in human lymphoma cell lines by examining growth inhibition and cell death, apoptosis induction, ADCC(3) and CDC(4). There were additive effects in all assays and synergism in cell lines, such as B35M, which displayed resistance to either MAb alone. In B35M cells, combined rituximab and chLym-1 induced a 27-fold direct reduction in viable cells, whereas equivalent concentrations of rituximab or chLym-1 alone induced only a 1-fold and 10-fold reduction in viable cells, respectively. Because these results occurred at MAb concentrations readily achievable in patients, they suggest that this combination immunotherapy regimen may increase the potency and range of effectiveness of these MAbs in lymphoma patients.
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Affiliation(s)
- Evan Tobin
- Department of Internal Medicine, University of California, Davis, CA, USA
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33
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Kügler M, Stein C, Schwenkert M, Saul D, Vockentanz L, Huber T, Wetzel SK, Scholz O, Plückthun A, Honegger A, Fey GH. Stabilization and humanization of a single-chain Fv antibody fragment specific for human lymphocyte antigen CD19 by designed point mutations and CDR-grafting onto a human framework. Protein Eng Des Sel 2009; 22:135-47. [DOI: 10.1093/protein/gzn079] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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34
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Horton HM, Bernett MJ, Pong E, Peipp M, Karki S, Chu SY, Richards JO, Vostiar I, Joyce PF, Repp R, Desjarlais JR, Zhukovsky EA. Potent in vitro and in vivo activity of an Fc-engineered anti-CD19 monoclonal antibody against lymphoma and leukemia. Cancer Res 2008; 68:8049-57. [PMID: 18829563 DOI: 10.1158/0008-5472.can-08-2268] [Citation(s) in RCA: 185] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
CD19 is a pan B-cell surface receptor expressed from pro-B-cell development until its down-regulation during terminal differentiation into plasma cells. CD19 represents an attractive immunotherapy target for cancers of lymphoid origin due to its high expression levels on the vast majority of non-Hodgkin's lymphomas and some leukemias. A humanized anti-CD19 antibody with an engineered Fc domain (XmAb5574) was generated to increase binding to Fcgamma receptors on immune cells and thus increase Fc-mediated effector functions. In vitro, XmAb5574 enhanced antibody-dependent cell-mediated cytotoxicity 100-fold to 1,000-fold relative to an anti-CD19 IgG1 analogue against a broad range of B-lymphoma and leukemia cell lines. Furthermore, XmAb5574 conferred antibody-dependent cell-mediated cytotoxicity against patient-derived acute lymphoblastic leukemia and mantle cell lymphoma cells, whereas the IgG1 analogue was inactive. XmAb5574 also increased antibody-dependent cellular phagocytosis and apoptosis. In vivo, XmAb5574 significantly inhibited lymphoma growth in prophylactic and established mouse xenograft models, and showed more potent antitumor activity than its IgG1 analogue. Comparisons with a variant incapable of Fcgamma receptor binding showed that engagement of these receptors is critical for optimal antitumor efficacy. These results suggest that XmAb5574 exhibits potent tumor cytotoxicity via direct and indirect effector functions and thus warrants clinical evaluation as an immunotherapeutic for CD19(+) hematologic malignancies.
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35
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Stieglmaier J, Bremer E, Kellner C, Liebig TM, ten Cate B, Peipp M, Schulze-Koops H, Pfeiffer M, Bühring HJ, Greil J, Oduncu F, Emmerich B, Fey GH, Helfrich W. Selective induction of apoptosis in leukemic B-lymphoid cells by a CD19-specific TRAIL fusion protein. Cancer Immunol Immunother 2008; 57:233-46. [PMID: 17665197 PMCID: PMC11030665 DOI: 10.1007/s00262-007-0370-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2007] [Accepted: 07/04/2007] [Indexed: 12/24/2022]
Abstract
Although the treatment outcome of lymphoid malignancies has improved in recent years by the introduction of transplantation and antibody-based therapeutics, relapse remains a major problem. Therefore, new therapeutic options are urgently needed. One promising approach is the selective activation of apoptosis in tumor cells by the tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). This study investigated the pro-apoptotic potential of a novel TRAIL fusion protein designated scFvCD19:sTRAIL, consisting of a CD19-specific single-chain Fv antibody fragment (scFv) fused to the soluble extracellular domain of TRAIL (sTRAIL). Potent apoptosis was induced by scFvCD19:sTRAIL in several CD19-positive tumor cell lines, whereas normal blood cells remained unaffected. In mixed culture experiments, selective binding of scFvCD19:sTRAIL to CD19-positive cells resulted in strong induction of apoptosis in CD19-negative bystander tumor cells. Simultaneous treatment of CD19-positive cell lines with scFvCD19:sTRAIL and valproic acid (VPA) or Cyclosporin A induced strongly synergistic apoptosis. Treatment of patient-derived acute B-lymphoblastic leukemia (B-ALL) and chronic B-lymphocytic leukemia (B-CLL) cells resulted in strong tumoricidal activity that was further enhanced by combination with VPA. In addition, scFvCD19:sTRAIL prevented engraftment of human Nalm-6 cells in xenotransplanted NOD/Scid mice. The pre-clinical data presented here warrant further investigation of scFvCD19:sTRAIL as a potential new therapeutic agent for CD19-positive B-lineage malignancies.
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Affiliation(s)
- Julia Stieglmaier
- Chair of Genetics, University of Erlangen-Nuremberg, BTE-Building, Erwin-Rommel-Straße 3, 91058 Erlangen, Germany
| | - Edwin Bremer
- Groningen University Institute for Drug Exploration, Department of Pathology and Laboratory Medicine, Section Medical Biology, Laboratory for Tumor Immunology, University Medical Center, Groningen, The Netherlands
| | - Christian Kellner
- Chair of Genetics, University of Erlangen-Nuremberg, BTE-Building, Erwin-Rommel-Straße 3, 91058 Erlangen, Germany
| | - Tanja M. Liebig
- Department of Molecular Tumorbiology and Tumorimmunology, University Medical Center, Cologne, Germany
| | - Bram ten Cate
- Groningen University Institute for Drug Exploration, Department of Pathology and Laboratory Medicine, Section Medical Biology, Laboratory for Tumor Immunology, University Medical Center, Groningen, The Netherlands
| | - Matthias Peipp
- Section of Stem Cell Transplantation and Immunotherapy, University Medical Center University of Schleswig-Holstein, Kiel, Germany
| | - Hendrik Schulze-Koops
- Clinical Research Group III, Nikolaus Fiebiger Center for Molecular Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Matthias Pfeiffer
- Department of Pediatric Oncology, University Children’s Hospital, Tuebingen, Germany
| | - Hans-Jörg Bühring
- Department of Internal Medicine II, University Hospital, Tuebingen, Germany
| | - Johann Greil
- Department of Pediatrics III, University Children’s Hospital, Heidelberg, Germany
| | - Fuat Oduncu
- Medizinische Klinik-Innenstadt, Klinikum der Universität München, München, Germany
| | - Bertold Emmerich
- Medizinische Klinik-Innenstadt, Klinikum der Universität München, München, Germany
| | - Georg H. Fey
- Chair of Genetics, University of Erlangen-Nuremberg, BTE-Building, Erwin-Rommel-Straße 3, 91058 Erlangen, Germany
| | - Wijnand Helfrich
- Groningen University Institute for Drug Exploration, Department of Pathology and Laboratory Medicine, Section Medical Biology, Laboratory for Tumor Immunology, University Medical Center, Groningen, The Netherlands
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36
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Schwemmlein M, Stieglmaier J, Kellner C, Peipp M, Saul D, Oduncu F, Emmerich B, Stockmeyer B, Lang P, Beck JD, Fey GH. A CD19-specific single-chain immunotoxin mediates potent apoptosis of B-lineage leukemic cells. Leukemia 2007; 21:1405-12. [PMID: 17495978 DOI: 10.1038/sj.leu.2404687] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CD19 is a B-lineage-specific transmembrane signaling protein participating in the control of proliferation and differentiation. It is present at high surface density on chronic B-lymphocytic leukemia (B-CLL) cells and cells of other B-cell malignancies, and is a prime target for therapy with antibody-derived agents. Many attempts have been made to target malignant cells via CD19, but to date none of these agents have received drug approval. Here we report the design of a monovalent immunotoxin consisting of a CD19-specific single-chain Fv antibody fragment fused to a derivative of Pseudomonas Exotoxin A. This fusion protein induced efficient antigen-restricted apoptosis of several human leukemia- and lymphoma-derived cell lines including Nalm-6, which it eliminated at an effective concentration (EC(50)) of 2.5 nM. The agent displayed synergistic toxicity when used in combination with valproic acid and cyclosporin A in cell-culture assays. It induced apoptosis of primary malignant cells in 12/12 samples from B-CLL patients, including patients responding poorly to fludarabine, and of cells from one pediatric acute lymphoblastic leukemia patient. In NOD/SCID mice transplanted with Nalm-6 cells, the toxin prevented engraftment and significantly prolonged survival of treated mice. Owing to its efficient antigen-restricted antileukemic activity, the agent deserves further development towards clinical testing.
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Affiliation(s)
- M Schwemmlein
- Genetics, University of Erlangen-Nuremberg, Erwin-Rommel-Strasse 3, Erlangen, Germany
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37
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Ljunggren HG, Malmberg KJ. Prospects for the use of NK cells in immunotherapy of human cancer. Nat Rev Immunol 2007; 7:329-39. [PMID: 17438573 DOI: 10.1038/nri2073] [Citation(s) in RCA: 428] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Current insights into the molecular specificities that regulate natural killer (NK)-cell function suggest that it might be possible to design NK-cell-based immunotherapeutic strategies against human cancer. Here, we describe evidence for NK-cell targeting of human tumours and address crucial questions that, in our opinion, require consideration for the development of successful NK-cell-based therapies. Appropriately used, we predict that NK cells will have a role, both directly and in combination with other treatment modalities, in future treatment of cancer.
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Affiliation(s)
- Hans-Gustaf Ljunggren
- Centre for Infectious Medicine, Department of Medicine, Karolinska Institute, Karolinska University Hospital Huddinge, 141 86 Stockholm, Sweden.
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38
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Chen YP, Qiao YY, Zhao XH, Chen HS, Wang Y, Wang Z. Rapid detection of hepatitis B virus surface antigen by an agglutination assay mediated by a bispecific diabody against both human erythrocytes and hepatitis B virus surface antigen. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2007; 14:720-5. [PMID: 17442848 PMCID: PMC1951082 DOI: 10.1128/cvi.00310-06] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Bispecific antibodies have immense potential for use in clinical applications. In the present study, a bispecific diabody against human red blood cells (RBCs) and hepatitis B virus surface antigen (HBsAg) was used to detect HBsAg in blood specimens. The bispecific diabody was constructed by crossing over the variable region of the heavy chains and the light chains of anti-RBC and anti-HBsAg antibodies with a short linker, SRGGGS. In enzyme-linked immunosorbent assays, this bispecific diabody showed specific binding to both RBCs and HBsAg. When this bispecific diabody was mixed with human blood specimens in the presence of HBsAg, the dual binding sites of the diabody caused agglutination of human RBCs. This diabody-mediated agglutination assay was then used to test 712 clinical blood specimens and showed 97.7% sensitivity and 100% specificity when the results were compared with those of the conventional immunoassay, which was used as a reference. This autologous RBC agglutination assay provides a simple approach for rapid screening for HBsAg in blood specimens.
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Affiliation(s)
- Yu-Ping Chen
- Department of Dermatology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.
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39
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Goldenberg DM, Chatal JF, Barbet J, Boerman O, Sharkey RM. Cancer Imaging and Therapy with Bispecific Antibody Pretargeting. UPDATE ON CANCER THERAPEUTICS 2007; 2:19-31. [PMID: 18311322 PMCID: PMC2034280 DOI: 10.1016/j.uct.2007.04.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This article reviews recent preclinical and clinical advances in the use of pretargeting methods for the radioimmunodetection and radioimmunotherapy of cancer. Whereas directly-labeled antibodies, fragments, and subfragments (minibodies and other constructs) have shown promise in both imaging and therapy applications over the past 25 years, their clinical adoption has not fulfilled the original expectations due to either poor image resolution and contrast in scanning or insufficient radiation doses delivered selectively to tumors for therapy. Pretargeting involves the separation of the localization of tumor with an anticancer antibody from the subsequent delivery of the imaging or therapeutic radionuclide. This has shown improvements in both imaging and therapy by overcoming the limitations of conventional, or 1-step, radioimmunodetection or radioimmunotherapy. We focus herein on the use of bispecific antibodies followed by radiolabeled peptide haptens as a new modality of selective delivery of radionuclides for the imaging and therapy of cancer. Our particular emphasis in pretargeting is the use of bispecific trimeric (3 Fab's) recombinant constructs made by a modular method of antibody and protein engineering of fusion molecules called Dock and Lock (DNL).
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Affiliation(s)
- David M Goldenberg
- Garden State Cancer Center, Center for Molecular Medicine and Immunology, Belleville, NJ, USA
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40
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Schrama D, Reisfeld RA, Becker JC. Antibody targeted drugs as cancer therapeutics. Nat Rev Drug Discov 2006; 5:147-59. [PMID: 16424916 DOI: 10.1038/nrd1957] [Citation(s) in RCA: 535] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Treatment of cancer is a double-edged sword: it should be as aggressive as possible to completely destroy the tumour, but it is precisely this aggressiveness which often causes severe side effects - a reason why some promising therapeutics can not be applied systemically. In addition, therapeutics such as cytokines that physiologically function in a para- or autocrine fashion require a locally enhanced level to exert their effect appropriately. An elegant way to accumulate therapeutic agents at the tumour site is their conjugation/fusion to tumour-specific antibodies. Here, we discuss recent preclinical and clinical data for antibody-drug conjugates and fusion proteins with a special focus on drug components that exert their antitumour effects through normal biological processes.
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Affiliation(s)
- David Schrama
- University of Wuerzburg, Dermatology, 97080 Wuerzburg, Germany
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41
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Abstract
Natural killer (NK) cells were identified 30 years ago based on their ability to "spontaneously" kill tumor cells. The basis for NK cell recognition and activation is due to a variety of receptors that bind to specific ligands on tumor cells and normal cells. Some of these receptors have the ability to inhibit NK cell function, and other receptors activate NK cell function. Therapeutic strategies for cancer therapy are being developed based on preventing NK cell inhibition or using NK cell receptors to activate NK cells or T cells. There are intriguing clinical data from studies of bone marrow transplantation that support the idea that preventing NK cell inhibition by human leukocyte antigen (HLA) class I molecules can be a means to promote graft-versus-leukemia (GvL) effects and limit graft-versus-host disease (GvHD) in acute myeloid leukemia (AML) and chronic myeloid leukemia (CML) patients. Experimental findings also support the blockade of NK cell inhibitory receptors as a way to protect against leukemia relapse. It may be possible to use our knowledge of NK cell activating receptors and their ligands to immunize patients with modified tumor cells to promote beneficial NK cell responses and development of host antitumor cytotoxic T lymphocytes (CTLs). Finally, new data support the idea of using modified NK cell receptors as a means to target patients' T cells against their own tumor cells and induce long-term immunity against them. Tumors are essentially tissues that have overcome normal regulation mechanisms, and therefore the ability to distinguish normal cells from abnormal cells is a key part of selectively attacking tumor cells. NK cells have various receptor systems designed to recognize infected and abnormal cells. Understanding NK cell receptors and their recognition mechanisms provides new tools for the development of immunotherapies against cancer.
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Affiliation(s)
- Charles L Sentman
- Department of Microbiology and Immunology, Dartmouth Medical School, Lebanon, New Hampshire 03756, USA
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Kornacker M, Verneris M, Kornacker B, Ganten T, Scheffold C, Negrin R. The apoptotic and proliferative fate of cytokine-induced killer cells after redirection to tumor cells with bispecific Ab. Cytotherapy 2006; 8:13-23. [PMID: 16627341 DOI: 10.1080/14653240500518264] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Cytokine-induced killer (CIK) cells are ex vivo expanded T cells with co-expression of CD3 and CD56 and NK activity. They have recently been evaluated in a phase I/II clinical trial against malignant lymphoma. Bispecific Ab (bsAb) redirect CIK cells to tumor targets, thus enhancing their cytotoxicity. While bsAb may improve T-cell mediated anti-tumor activity, little is known about the fate of effector cells upon redirection to tumor targets using a bsAb. METHODS Using ex vivo-activated CIK cells, Her2/neu expressing breast and ovarian cell lines and a F(ab')2 Her2/neu x CD3 bsAb, we investigated the anti-tumor activity and the proliferative and apoptotic outcome of CIK cells. RESULTS When redirected to tumor targets with bsAb, there was a significant increase in anti-tumor activity as well as an increase in both CIK cell proliferation and apoptosis. The addition of agonistic Ab against CD28 did not significantly increase proliferation or apoptosis of CIK cells redirected to CD80- and CD86- tumor targets. To attempt to reduce T-cell apoptosis, we incubated CIK cells in the presence of the pan-caspase inhibitor z-VAD-fmk, which led to a partial reduction in T-cell apoptosis without increasing cellular cytotoxicity. DISCUSSION bsAb are effective in redirecting activated T cells to tumor targets and such redirection leads to both T-cell proliferation and apoptosis that are not altered by co-stimulation through CD28. Effector cell apoptosis can be reduced by using a caspase inhibitor but this does not increase CIK cell cytotoxicity.
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MESH Headings
- Antibodies, Bispecific/immunology
- Antibodies, Bispecific/pharmacology
- Antibody-Dependent Cell Cytotoxicity/immunology
- Apoptosis/drug effects
- Binding Sites, Antibody
- Cell Proliferation/drug effects
- Cytokines/immunology
- Cytotoxicity Tests, Immunologic
- Cytotoxicity, Immunologic
- Female
- Flow Cytometry
- Humans
- Killer Cells, Natural/cytology
- Killer Cells, Natural/drug effects
- Killer Cells, Natural/immunology
- Middle Aged
- Neoplasms/immunology
- Neoplasms/pathology
- Receptor, ErbB-2/metabolism
- Receptors, Cell Surface/metabolism
- Tumor Cells, Cultured
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Affiliation(s)
- M Kornacker
- Department of Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
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