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Chen R, Rajan S, Overstreet MG, Hurt EM, Thomas SB, Muniz-Medina V, Ward C, Sadowska A, Fleming R, Karanth S, Breen S, Zheng B, Wu Y, Iverson WO, Novick S, O'Day T, Shah DP, Dimasi N, Tiberghien AC, Osbourn J, Walker J. Preclinical Characterization of an Antibody-Drug Conjugate Targeting CS-1 and the Identification of Uncharacterized Populations of CS-1-Positive Cells. Mol Cancer Ther 2020; 19:1649-1659. [PMID: 32404408 DOI: 10.1158/1535-7163.mct-19-0482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 11/21/2019] [Accepted: 05/08/2020] [Indexed: 11/16/2022]
Abstract
Multiple myeloma is a hematologic cancer that disrupts normal bone marrow function and has multiple lines of therapeutic options, but is incurable as patients ultimately relapse. We developed a novel antibody-drug conjugate (ADC) targeting CS-1, a protein that is highly expressed on multiple myeloma tumor cells. The anti-CS-1 mAb specifically bound to cells expressing CS-1 and, when conjugated to a cytotoxic pyrrolobenzodiazepine payload, reduced the viability of multiple myeloma cell lines in vitro In mouse models of multiple myeloma, a single administration of the CS-1 ADC caused durable regressions in disseminated models and complete regression in a subcutaneous model. In an exploratory study in cynomolgus monkeys, the CS-1 ADC demonstrated a half-life of 3 to 6 days; however, no highest nonseverely toxic dose was achieved, as bone marrow toxicity was dose limiting. Bone marrow from dosed monkeys showed reductions in progenitor cells as compared with normal marrow. In vitro cell killing assays demonstrated that the CS-1 ADC substantially reduced the number of progenitor cells in healthy bone marrow, leading us to identify previously unreported CS-1 expression on a small population of progenitor cells in the myeloid-erythroid lineage. This finding suggests that bone marrow toxicity is the result of both on-target and off-target killing by the ADC.
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Affiliation(s)
- Ruoyan Chen
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | - Saravanan Rajan
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | | | - Elaine M Hurt
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | | | | | | | | | - Ryan Fleming
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | | | - Shannon Breen
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | - Bo Zheng
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | - Yuling Wu
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | | | - Steven Novick
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | - Terrence O'Day
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | - Dipesha P Shah
- Research and Development, AstraZeneca, Gaithersburg, Maryland
| | | | | | - Jane Osbourn
- Research and Development, AstraZeneca, Cambridge, United Kingdom
| | - Jill Walker
- Research and Development, AstraZeneca, Gaithersburg, Maryland
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Exploring the role of polymeric conjugates toward anti-cancer drug delivery: Current trends and future projections. Int J Pharm 2018; 548:500-514. [DOI: 10.1016/j.ijpharm.2018.06.060] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/27/2018] [Accepted: 06/27/2018] [Indexed: 12/13/2022]
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Yao VJ, D'Angelo S, Butler KS, Theron C, Smith TL, Marchiò S, Gelovani JG, Sidman RL, Dobroff AS, Brinker CJ, Bradbury ARM, Arap W, Pasqualini R. Ligand-targeted theranostic nanomedicines against cancer. J Control Release 2016; 240:267-286. [PMID: 26772878 PMCID: PMC5444905 DOI: 10.1016/j.jconrel.2016.01.002] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 12/17/2015] [Accepted: 01/02/2016] [Indexed: 02/06/2023]
Abstract
Nanomedicines have significant potential for cancer treatment. Although the majority of nanomedicines currently tested in clinical trials utilize simple, biocompatible liposome-based nanocarriers, their widespread use is limited by non-specificity and low target site concentration and thus, do not provide a substantial clinical advantage over conventional, systemic chemotherapy. In the past 20years, we have identified specific receptors expressed on the surfaces of tumor endothelial and perivascular cells, tumor cells, the extracellular matrix and stromal cells using combinatorial peptide libraries displayed on bacteriophage. These studies corroborate the notion that unique receptor proteins such as IL-11Rα, GRP78, EphA5, among others, are differentially overexpressed in tumors and present opportunities to deliver tumor-specific therapeutic drugs. By using peptides that bind to tumor-specific cell-surface receptors, therapeutic agents such as apoptotic peptides, suicide genes, imaging dyes or chemotherapeutics can be precisely and systemically delivered to reduce tumor growth in vivo, without harming healthy cells. Given the clinical applicability of peptide-based therapeutics, targeted delivery of nanocarriers loaded with therapeutic cargos seems plausible. We propose a modular design of a functionalized protocell in which a tumor-targeting moiety, such as a peptide or recombinant human antibody single chain variable fragment (scFv), is conjugated to a lipid bilayer surrounding a silica-based nanocarrier core containing a protected therapeutic cargo. The functionalized protocell can be tailored to a specific cancer subtype and treatment regimen by exchanging the tumor-targeting moiety and/or therapeutic cargo or used in combination to create unique, theranostic agents. In this review, we summarize the identification of tumor-specific receptors through combinatorial phage display technology and the use of antibody display selection to identify recombinant human scFvs against these tumor-specific receptors. We compare the characteristics of different types of simple and complex nanocarriers, and discuss potential types of therapeutic cargos and conjugation strategies. The modular design of functionalized protocells may improve the efficacy and safety of nanomedicines for future cancer therapy.
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Affiliation(s)
- Virginia J Yao
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87131; Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Sara D'Angelo
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87131; Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Kimberly S Butler
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87131
| | - Christophe Theron
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87131
| | - Tracey L Smith
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87131; Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - Serena Marchiò
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87131; Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131; Department of Oncology, University of Turin, Candiolo, 10060, Italy
| | - Juri G Gelovani
- Department of Biomedical Engineering, College of Engineering and School of Medicine, Wayne State University, Detroit, MI 48201
| | - Richard L Sidman
- Department of Neurology, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA 02215
| | - Andrey S Dobroff
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87131; Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131
| | - C Jeffrey Brinker
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87131; Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM 87131; Cancer Research and Treatment Center, Department of Molecular Genetics and Microbiology, University of New Mexico Health Sciences Center, University of New Mexico, Albuquerque, NM 87131; Self-Assembled Materials Department, Sandia National Laboratories, Albuquerque, NM 87185
| | - Andrew R M Bradbury
- Bioscience Division, Los Alamos National Laboratories, Los Alamos, NM, 87545
| | - Wadih Arap
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87131; Division of Hematology/Oncology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131.
| | - Renata Pasqualini
- University of New Mexico Comprehensive Cancer Center, Albuquerque, NM 87131; Division of Molecular Medicine, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131.
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Marconato L, Buracco P, Aresu L. Perspectives on the design of clinical trials for targeted therapies and immunotherapy in veterinary oncology. Vet J 2015; 205:238-43. [DOI: 10.1016/j.tvjl.2015.02.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Revised: 02/15/2015] [Accepted: 02/25/2015] [Indexed: 12/18/2022]
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5
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Verma VA, Pillow TH, DePalatis L, Li G, Phillips GL, Polson AG, Raab HE, Spencer S, Zheng B. The cryptophycins as potent payloads for antibody drug conjugates. Bioorg Med Chem Lett 2015; 25:864-8. [PMID: 25613677 DOI: 10.1016/j.bmcl.2014.12.070] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 12/17/2014] [Accepted: 12/19/2014] [Indexed: 01/30/2023]
Abstract
The cryptophycins are a potent class of cytotoxic agents that were evaluated as antibody drug conjugate (ADC) payloads. Free cryptophycin analog 1 displayed cell activity an order of magnitude more potent than approved ADC payloads MMAE and DM1. This potency increase was also reflected in the activity of the cryptophycin ADCs, attached via a either cleavable or non-cleavable linker.
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Affiliation(s)
- Vishal A Verma
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States.
| | - Thomas H Pillow
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Laura DePalatis
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Guangmin Li
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | | | - Andrew G Polson
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Helga E Raab
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Susan Spencer
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
| | - Bing Zheng
- Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States
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Feng Y, Zhu Z, Chen W, Prabakaran P, Lin K, Dimitrov DS. Conjugates of Small Molecule Drugs with Antibodies and Other Proteins. Biomedicines 2014; 2:1-13. [PMID: 28548057 PMCID: PMC5423484 DOI: 10.3390/biomedicines2010001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/17/2014] [Accepted: 01/17/2014] [Indexed: 01/30/2023] Open
Abstract
Conjugates of small molecule drugs with antibodies (ADCs) and with other proteins (protein-drug conjugates, PDC) are used as a new class of targeted therapeutics combining the specificity of monoclonal antibodies (mAbs) and other proteins with potent cytotoxic activity of small molecule drugs for the treatment of cancer and other diseases. A(P)DCs have three major components, antibody (targeting protein), linker and payload, the cytotoxic drug. Recently, advances in identifying targets, selecting highly specific mAbs of preferred isotypes, optimizing linker technology and improving chemical methods for conjugation have led to the approval of two ADCs by Food and Drug Administration (FDA) and more than 30 ADCs in advanced clinical development. However, the complex and heterogeneous nature of A(P)DCs often cause poor solubility, instability, aggregation and eventually unwanted toxicity. This article reviews the main components of A(P)DCs, and discusses the choices for drugs, linkers and conjugation methods currently used. Future work will need to focus on developments and strategies for overcoming such major problems associated with the A(P)DCs.
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Affiliation(s)
- Yang Feng
- Protein Interactions Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.
| | - Zhongyu Zhu
- Protein Interactions Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.
| | - Weizao Chen
- Protein Interactions Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.
| | - Ponraj Prabakaran
- Protein Interactions Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA.
| | - Kedan Lin
- Genentech., San Francisco, CA 94080, USA.
| | - Dimiter S Dimitrov
- Protein Interactions Group, Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.
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