1
|
Guo Y, Li X, Xie Y, Wang Y. What influences the activity of Degrader-Antibody conjugates (DACs). Eur J Med Chem 2024; 268:116216. [PMID: 38387330 DOI: 10.1016/j.ejmech.2024.116216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/23/2024] [Accepted: 02/01/2024] [Indexed: 02/24/2024]
Abstract
The targeted protein degradation (TPD) technology employing proteolysis-targeting chimeras (PROTACs) has been widely applied in drug chemistry and chemical biology for the treatment of cancer and other diseases. PROTACs have demonstrated significant advantages in targeting undruggable targets and overcoming drug resistance. However, despite the efficient degradation of targeted proteins achieved by PROTACs, they still face challenges related to selectivity between normal and cancer cells, as well as issues with poor membrane permeability due to their substantial molecular weight. Additionally, the noteworthy toxicity resulting from off-target effects also needs to be addressed. To solve these issues, Degrader-Antibody Conjugates (DACs) have been developed, leveraging the targeting and internalization capabilities of antibodies. In this review, we elucidates the characteristics and distinctions between DACs, and traditional Antibody-drug conjugates (ADCs). Meanwhile, we emphasizes the significance of DACs in facilitating the delivery of PROTACs and delves into the impact of various components on DAC activity. These components include antibody targets, drug-antibody ratio (DAR), linker types, PROTACs targets, PROTACs connections, and E3 ligase ligands. The review also explores the suitability of different targets (antibody targets or PROTACs targets) for DACs, providing insights to guide the design of PROTACs better suited for antibody conjugation.
Collapse
Affiliation(s)
- Yaolin Guo
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China; Frontiers Medical Center, Tianfu Jincheng Laboratory, Chengdu, 610212, Sichuan, China
| | - Xiaoxue Li
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yang Xie
- Frontiers Medical Center, Tianfu Jincheng Laboratory, Chengdu, 610212, Sichuan, China
| | - Yuxi Wang
- Department of Respiratory and Critical Care Medicine, Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China; Frontiers Medical Center, Tianfu Jincheng Laboratory, Chengdu, 610212, Sichuan, China.
| |
Collapse
|
2
|
Garg S, Ni W, Griffin JD, Sattler M. Chimeric Antigen Receptor T Cell Therapy in Acute Myeloid Leukemia: Trials and Tribulations. Hematol Rep 2023; 15:608-626. [PMID: 37987319 PMCID: PMC10660693 DOI: 10.3390/hematolrep15040063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/01/2023] [Accepted: 11/08/2023] [Indexed: 11/22/2023] Open
Abstract
Acute myeloid leukemia (AML) is a heterogeneous hematological malignancy that is often associated with relapse and drug resistance after standard chemotherapy or targeted therapy, particularly in older patients. Hematopoietic stem cell transplants are looked upon as the ultimate salvage option with curative intent. Adoptive cell therapy using chimeric antigen receptors (CAR) has shown promise in B cell malignancies and is now being investigated in AML. Initial clinical trials have been disappointing in AML, and we review current strategies to improve efficacy for CAR approaches. The extensive number of clinical trials targeting different antigens likely reflects the genetic heterogeneity of AML. The limited number of patients reported in multiple early clinical studies makes it difficult to draw conclusions about CAR safety, but it does suggest that the efficacy of this approach in AML lags behind the success observed in B cell malignancies. There is a clear need not only to improve CAR design but also to identify targets in AML that show limited expression in normal myeloid lineage cells.
Collapse
Affiliation(s)
- Swati Garg
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; (W.N.); (J.D.G.); (M.S.)
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Wei Ni
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; (W.N.); (J.D.G.); (M.S.)
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - James D. Griffin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; (W.N.); (J.D.G.); (M.S.)
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Martin Sattler
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; (W.N.); (J.D.G.); (M.S.)
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| |
Collapse
|
3
|
Morse JW, Rios M, Ye J, Rios A, Zhang CC, Daver NG, DiNardo CD, Zhang N, An Z. Antibody therapies for the treatment of acute myeloid leukemia: exploring current and emerging therapeutic targets. Expert Opin Investig Drugs 2023; 32:107-125. [PMID: 36762937 PMCID: PMC10031751 DOI: 10.1080/13543784.2023.2179482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/08/2023] [Indexed: 02/11/2023]
Abstract
INTRODUCTION Acute myeloid leukemia (AML) is the most common and deadly type of leukemia affecting adults. It is typically managed with rounds of non-targeted chemotherapy followed by hematopoietic stem cell transplants, but this is only possible in patients who can tolerate these harsh treatments and many are elderly and frail. With the identification of novel tumor-specific cell surface receptors, there is great conviction that targeted antibody therapies will soon become available for these patients. AREAS COVERED In this review, we describe the current landscape of known target receptors for monospecific and bispecific antibody-based therapeutics for AML. Here, we characterize each of the receptors and targeted antibody-based therapeutics in development, illustrating the rational design behind each therapeutic compound. We then discuss the bispecific antibodies in development and how they improve immune surveillance of AML. For each therapeutic, we also summarize the available pre-clinical and clinical data, including data from discontinued trials. EXPERT OPINION One antibody-based therapeutic has already been approved for AML treatment, the CD33-targeting antibody-drug conjugate, gemtuzumab ozogamicin. Many more are currently in pre-clinical and clinical studies. These antibody-based therapeutics can perform tumor-specific, elaborate cytotoxic functions and there is growing confidence they will soon lead to personalized, safe AML treatment options that induce durable remissions.
Collapse
Affiliation(s)
- Joshua W Morse
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Margarita Rios
- Gorgas Memorial Institute of Health Studies, Panama City, Panama
| | - John Ye
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Adan Rios
- Division of Oncology, Department of Internal Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Cheng Cheng Zhang
- Department of Physiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Naval G Daver
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Courtney D DiNardo
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ningyan Zhang
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Zhiqiang An
- Texas Therapeutics Institute, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| |
Collapse
|
4
|
Nguyen TD, Bordeau BM, Balthasar JP. Mechanisms of ADC Toxicity and Strategies to Increase ADC Tolerability. Cancers (Basel) 2023; 15:713. [PMID: 36765668 PMCID: PMC9913659 DOI: 10.3390/cancers15030713] [Citation(s) in RCA: 45] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/19/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
Anti-cancer antibody-drug conjugates (ADCs) aim to expand the therapeutic index of traditional chemotherapy by employing the targeting specificity of monoclonal antibodies (mAbs) to increase the efficiency of the delivery of potent cytotoxic agents to malignant cells. In the past three years, the number of ADCs approved by the Food and Drug Administration (FDA) has tripled. Although several ADCs have demonstrated sufficient efficacy and safety to warrant FDA approval, the clinical use of all ADCs leads to substantial toxicity in treated patients, and many ADCs have failed during clinical development due to their unacceptable toxicity profiles. Analysis of the clinical data has demonstrated that dose-limiting toxicities (DLTs) are often shared by different ADCs that deliver the same cytotoxic payload, independent of the antigen that is targeted and/or the type of cancer that is treated. DLTs are commonly associated with cells and tissues that do not express the targeted antigen (i.e., off-target toxicity), and often limit ADC dosage to levels below those required for optimal anti-cancer effects. In this manuscript, we review the fundamental mechanisms contributing to ADC toxicity, we summarize common ADC treatment-related adverse events, and we discuss several approaches to mitigating ADC toxicity.
Collapse
Affiliation(s)
- Toan D Nguyen
- Department of Pharmaceutical Sciences, University at Buffalo, Buffalo, NY 14214, USA
| | - Brandon M Bordeau
- Department of Pharmaceutical Sciences, University at Buffalo, Buffalo, NY 14214, USA
| | - Joseph P Balthasar
- Department of Pharmaceutical Sciences, University at Buffalo, Buffalo, NY 14214, USA
| |
Collapse
|
5
|
Abstract
In order to deliver chemotherapeutics more efficiently, small-molecule-drug conjugates (SMDCs) and antibody-drug conjugates (ADCs) have been synthesized and explored. These conjugates not only provide selective delivery but also improve the therapeutic index of toxins. By merging this conjugate concept with target protein degradation (TPD), the degrader-antibody conjugate (DAC) field has emerged, and clinical trials have even begun in recent years. In this Perspective, we provide the concepts, applications, and recent advances in the area of DACs.
Collapse
Affiliation(s)
- Ki Bum Hong
- New Drug Development Center (NDDC), Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, 41061 Daegu, Korea
| | - Hongchan An
- New Drug Development Center (NDDC), Daegu-Gyeongbuk Medical Innovation Foundation (DGMIF), 80 Cheombok-ro, Dong-gu, 41061 Daegu, Korea
| |
Collapse
|
6
|
Present and Future Role of Immune Targets in Acute Myeloid Leukemia. Cancers (Basel) 2022; 15:cancers15010253. [PMID: 36612249 PMCID: PMC9818182 DOI: 10.3390/cancers15010253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/20/2022] [Accepted: 12/28/2022] [Indexed: 01/03/2023] Open
Abstract
It is now well known that the bone marrow (BM) cell niche contributes to leukemogenesis, but emerging data support the role of the complex crosstalk between AML cells and the BM microenvironment to induce a permissive immune setting that protects leukemic stem cells (LSCs) from therapy-induced death, thus favoring disease persistence and eventual relapse. The identification of potential immune targets on AML cells and the modulation of the BM environment could lead to enhanced anti-leukemic effects of drugs, immune system reactivation, and the restoration of AML surveillance. Potential targets and effectors of this immune-based therapy could be monoclonal antibodies directed against LSC antigens such as CD33, CD123, and CLL-1 (either as direct targets or via several bispecific T-cell engagers), immune checkpoint inhibitors acting on different co-inhibitory axes (alone or in combination with conventional AML drugs), and novel cellular therapies such as chimeric antigen receptor (CAR) T-cells designed against AML-specific antigens. Though dozens of clinical trials, mostly in phases I and II, are ongoing worldwide, results have still been negatively affected by difficulties in the identification of the optimal targets on LSCs.
Collapse
|
7
|
Structural Investigation of Therapeutic Antibodies Using Hydroxyl Radical Protein Footprinting Methods. Antibodies (Basel) 2022; 11:antib11040071. [PMID: 36412837 PMCID: PMC9680451 DOI: 10.3390/antib11040071] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/09/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
Commercial monoclonal antibodies are growing and important components of modern therapies against a multitude of human diseases. Well-known high-resolution structural methods such as protein crystallography are often used to characterize antibody structures and to determine paratope and/or epitope binding regions in order to refine antibody design. However, many standard structural techniques require specialized sample preparation that may perturb antibody structure or require high concentrations or other conditions that are far from the conditions conducive to the accurate determination of antigen binding or kinetics. We describe here in this minireview the relatively new method of hydroxyl radical protein footprinting, a solution-state method that can provide structural and kinetic information on antibodies or antibody-antigen interactions useful for therapeutic antibody design. We provide a brief history of hydroxyl radical footprinting, examples of current implementations, and recent advances in throughput and accessibility.
Collapse
|
8
|
Antibody-Drug Conjugates in Myeloid Leukemias. Cancer J 2022; 28:454-461. [DOI: 10.1097/ppo.0000000000000635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
9
|
Therapeutic Advances in Immunotherapies for Hematological Malignancies. Int J Mol Sci 2022; 23:ijms231911526. [PMID: 36232824 PMCID: PMC9569660 DOI: 10.3390/ijms231911526] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/21/2022] [Accepted: 09/26/2022] [Indexed: 11/23/2022] Open
Abstract
Following the success of immunotherapies such as chimeric antigen receptor transgenic T-cell (CAR-T) therapy, bispecific T-cell engager therapy, and immune checkpoint inhibitors in the treatment of hematologic malignancies, further studies are underway to improve the efficacy of these immunotherapies and to reduce the complications associated with their use in combination with other immune checkpoint inhibitors and conventional chemotherapy. Studies of novel therapeutic strategies such as bispecific (tandem or dual) CAR-T, bispecific killer cell engager, trispecific killer cell engager, and dual affinity retargeting therapies are also underway. Because of these studies and the discovery of novel immunotherapeutic target molecules, the use of immunotherapy for diseases initially thought to be less promising to treat with this treatment method, such as acute myeloid leukemia and T-cell hematologic tumors, has become a reality. Thus, in this coming era of new transplantation- and chemotherapy-free treatment strategies, it is imperative for both scientists and clinicians to understand the molecular immunity of hematologic malignancies. In this review, we focus on the remarkable development of immunotherapies that could change the prognosis of hematologic diseases. We also review the molecular mechanisms, development processes, clinical efficacies, and problems of new agents.
Collapse
|
10
|
Koenig SG, Angelaud R, Crittenden CM, Kurita K, Russell DJ, Marcoux JF, Matt T, Gosselin F. Development of Dual Practical Manufacturing Routes to Cognate Pyrrolobenzodiazepine-Based Linker-Drugs. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stefan G. Koenig
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rémy Angelaud
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Christopher M. Crittenden
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Kenji Kurita
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - David J. Russell
- Department of Small Molecule Analytical Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jean-Francois Marcoux
- Department of Manufacturing and Science Technology, F. Hoffmann-La Roche Ltd, Viaduktstrasse 31, 4051 Basel, Switzerland
| | - Thomas Matt
- Chemical R&D Department, Cerbios Pharma SA, Via Figino 6, 6917 Barbengo/Lugano, Switzerland
| | - Francis Gosselin
- Department of Small Molecule Process Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| |
Collapse
|
11
|
Yan J, Li T, Miao Z, Wang P, Sheng C, Zhuang C. Homobivalent, Trivalent, and Covalent PROTACs: Emerging Strategies for Protein Degradation. J Med Chem 2022; 65:8798-8827. [PMID: 35763424 DOI: 10.1021/acs.jmedchem.2c00728] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Proteolysis-targeting chimeras (PROTACs) is a fast-growing technology providing many strengths over inhibition of protein activity directly and is attracting increasing interest in new drug discovery and development. However, efficiently identifying potent and drug-like degraders is still challenging in the development of PROTACs. Complementary to traditional PROTACs, several emerging types of PROTACs, such as homobivalent PROTACs based on two E3 ligases (e.g., CRBN, VHL, MDM2, TRIM24), chemical- or biological-based trivalent/multitargeted PROTACs, and covalent PROTACs, are rising for targeted protein degradation. These new types of PROTACs have several advantages over the traditional PROTACs including high selectivity, low toxicity, better therapeutic effects, and so on. In this perspective, we will summarize the latest development of representative PROTACs focusing on research mainly in past 10 years and discuss their advantages and disadvantages. Moreover, the outlook and perspectives on the associated challenges and future directions will be provided.
Collapse
Affiliation(s)
- Jianyu Yan
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Tengfei Li
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Zhenyuan Miao
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Pei Wang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Chunquan Sheng
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Chunlin Zhuang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| |
Collapse
|
12
|
Obszański P, Kozłowska A, Wańcowiat J, Twardowska J, Lejman M, Zawitkowska J. Molecular-Targeted Therapy of Pediatric Acute Myeloid Leukemia. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123911. [PMID: 35745032 PMCID: PMC9230975 DOI: 10.3390/molecules27123911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 11/29/2022]
Abstract
Acute myeloid leukemia (AML) accounts for approximately 15–20% of all childhood leukemia cases. The overall survival of children with acute myeloid leukemia does not exceed 82%, and the 5-year event-free survival rates range from 46% to 69%. Such suboptimal outcomes are the result of numerous mutations and epigenetic changes occurring in this disease that adversely affect the susceptibility to treatment and relapse rate. We describe various molecular-targeted therapies that have been developed in recent years to meet these challenges and were or are currently being studied in clinical trials. First introduced in adult AML, novel forms of treatment are slowly beginning to change the therapeutic approach to pediatric AML. Despite promising results of clinical trials investigating new drugs, further clinical studies involving greater numbers of pediatric patients are still needed to improve the outcomes in childhood AML.
Collapse
Affiliation(s)
- Piotr Obszański
- Student Scientific Society, Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland; (P.O.); (A.K.)
| | - Anna Kozłowska
- Student Scientific Society, Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland; (P.O.); (A.K.)
| | - Jakub Wańcowiat
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland; (J.W.); (J.T.)
| | - Julia Twardowska
- Student Scientific Society, Laboratory of Genetic Diagnostics, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland; (J.W.); (J.T.)
| | - Monika Lejman
- Laboratory of Genetic Diagnostics, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland;
| | - Joanna Zawitkowska
- Department of Pediatric Hematology, Oncology and Transplantology, Medical University of Lublin, Gębali 6, 20-093 Lublin, Poland
- Correspondence:
| |
Collapse
|
13
|
Rahmani S, Yazdanpanah N, Rezaei N. Natural killer cells and acute myeloid leukemia: promises and challenges. Cancer Immunol Immunother 2022; 71:2849-2867. [PMID: 35639116 DOI: 10.1007/s00262-022-03217-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 04/26/2022] [Indexed: 10/18/2022]
Abstract
Acute myeloid leukemia (AML) is considered as one of the most malignant conditions of the bone marrow. Over the past few decades, despite substantial progresses in the management of AML, relapse remission remains a major problem. Natural killer cells (NK cells) are known as a unique component of the innate immune system. Due to swift tumor detection, distinct cytotoxic action, and extensive immune interaction, NK cells have been used in various cancer settings for decades. It has been a growing knowledge of therapeutic magnitudes ranging from adoptive NK cell transfer to chimeric antigen receptor NK cells, aiming to achieve better therapeutic responses in patients with AML. In this article, the potentials of NK cells for treatment of AML are highlighted, and challenges for such therapeutic methods are discussed. In addition, the clinical application of NK cells, mainly in patients with AML, is pictured according to the existing evidence.
Collapse
Affiliation(s)
- Shayan Rahmani
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Niloufar Yazdanpanah
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Immunodeficiencies, Children's Medical Center Hospital, Tehran University of Medical Sciences, Dr. Qarib St, Keshavarz Blvd, Tehran, 14194, Iran.,Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center Hospital, Tehran University of Medical Sciences, Dr. Qarib St, Keshavarz Blvd, Tehran, 14194, Iran. .,Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran. .,Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
14
|
Saad AA. Targeting cancer-associated glycans as a therapeutic strategy in leukemia. ALL LIFE 2022. [DOI: 10.1080/26895293.2022.2049901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Ashraf Abdullah Saad
- Unit of Pediatric Hematologic Oncology and BMT, Sultan Qaboos University Hospital, Muscat, Oman
| |
Collapse
|
15
|
Teicher BA, Morris J. Antibody-Drug Conjugate Targets, Drugs and Linkers. Curr Cancer Drug Targets 2022; 22:463-529. [PMID: 35209819 DOI: 10.2174/1568009622666220224110538] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/22/2021] [Accepted: 11/09/2021] [Indexed: 11/22/2022]
Abstract
Antibody-drug conjugates offer the possibility of directing powerful cytotoxic agents to a malignant tumor while sparing normal tissue. The challenge is to select an antibody target expressed exclusively or at highly elevated levels on the surface of tumor cells and either not all or at low levels on normal cells. The current review explores 78 targets that have been explored as antibody-drug conjugate targets. Some of these targets have been abandoned, 9 or more are the targets of FDA-approved drugs, and most remain active clinical interest. Antibody-drug conjugates require potent cytotoxic drug payloads, several of these small molecules are discussed, as are the linkers between the protein component and small molecule components of the conjugates. Finally, conclusions regarding the elements for the successful antibody-drug conjugate are discussed.
Collapse
Affiliation(s)
- Beverly A Teicher
- Developmental Therapeutics Program, DCTD, National Cancer Institute, Bethesda, MD 20892,United States
| | - Joel Morris
- Developmental Therapeutics Program, DCTD, National Cancer Institute, Bethesda, MD 20892,United States
| |
Collapse
|
16
|
|
17
|
Lim J, Sari-Ak D, Bagga T. Siglecs as Therapeutic Targets in Cancer. BIOLOGY 2021; 10:1178. [PMID: 34827170 PMCID: PMC8615218 DOI: 10.3390/biology10111178] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/03/2021] [Accepted: 11/08/2021] [Indexed: 02/06/2023]
Abstract
Hypersialylation is a common post-translational modification of protein and lipids found on cancer cell surfaces, which participate in cell-cell interactions and in the regulation of immune responses. Sialic acids are a family of nine-carbon α-keto acids found at the outermost ends of glycans attached to cell surfaces. Given their locations on cell surfaces, tumor cells aberrantly overexpress sialic acids, which are recognized by Siglec receptors found on immune cells to mediate broad immunomodulatory signaling. Enhanced sialylation exposed on cancer cell surfaces is exemplified as "self-associated molecular pattern" (SAMP), which tricks Siglec receptors found on leukocytes to greatly down-regulate immune responsiveness, leading to tumor growth. In this review, we focused on all 15 human Siglecs (including Siglec XII), many of which still remain understudied. We also highlighted strategies that disrupt the course of Siglec-sialic acid interactions, such as antibody-based therapies and sialic acid mimetics leading to tumor cell depletion. Herein, we introduced the central roles of Siglecs in mediating pro-tumor immunity and discussed strategies that target these receptors, which could benefit improved cancer immunotherapy.
Collapse
Affiliation(s)
- Jackwee Lim
- Singapore Immunology Network, A*STAR, 8a Biomedical Grove, Singapore 138648, Singapore;
| | - Duygu Sari-Ak
- Department of Medical Biology, School of Medicine, University of Health Sciences, Istanbul 34668, Turkey;
| | - Tanaya Bagga
- Singapore Immunology Network, A*STAR, 8a Biomedical Grove, Singapore 138648, Singapore;
| |
Collapse
|
18
|
Bi-specific and Tri-specific NK Cell Engagers: The New Avenue of Targeted NK Cell Immunotherapy. Mol Diagn Ther 2021; 25:577-592. [PMID: 34327614 DOI: 10.1007/s40291-021-00550-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2021] [Indexed: 02/01/2023]
Abstract
Natural killer (NK) cell-mediated cancer immunotherapy has grown significantly over the past two decades. More recently, multi-specific engagers have been developed as cancer therapeutics to effectively arm endogenous NK cells to more potently induce specific cytolytic responses against tumor targets. This review explores the bi- and tri-specific NK/tumor engagers that are emerging as a new generation of immunotherapeutics. These molecules vary in configuration, but they typically have small molecular weights and domains that engage specific tumor antigens and NK cell-activating receptors such as CD16, NKp30, NKp46, and NKG2D. They have demonstrated compelling potential in boosting NK cell cytotoxicity against specific tumor targets. This highly adaptable off-the-shelf platform, which in some formats also integrates cytokines, is poised to revolutionize targeted NK cell immunotherapy, either as a monotherapy or in combination with other effective anti-cancer therapies.
Collapse
|
19
|
Dai Z, Zhang XN, Cheng Q, Fei F, Hou T, Li J, Abdolvahabi A, Watanabe J, Pei H, Smbatyan G, Xie J, Lenz HJ, Louie SG, Zhang Y. Site-specific antibody-drug conjugates with variable drug-to-antibody-ratios for AML therapy. J Control Release 2021; 336:433-442. [PMID: 34197861 PMCID: PMC8373670 DOI: 10.1016/j.jconrel.2021.06.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 06/22/2021] [Accepted: 06/26/2021] [Indexed: 11/16/2022]
Abstract
Random conjugations of chemotherapeutics to monoclonal antibodies result in heterogeneous antibody-drug conjugates (ADCs) with suboptimal pharmacological properties. We recently developed a new technology for facile generation of homogeneous ADCs by harnessing human CD38 catalytic domain and its dinucleotide-derived covalent inhibitor, termed ADP-ribosyl cyclase-enabled ADCs (ARC-ADCs). Herein we advance this technology by designing and synthesizing ARC-ADCs with customizable drug-to-antibody ratios (DARs). Through varying numbers and locations of CD38 fused to an antibody targeting human C-type lectin-like molecule-1 (hCLL-1), ARC-ADCs featuring DARs of 2 and 4 were rapidly generated via a single step with cytotoxic monomethyl auristatin F (MMAF) as payloads. In contrast to anti-hCLL-1 ARC-ADC carrying 2 drug molecules, anti-hCLL-1 ARC-ADC with a DAR of 4 shows highly potent activity in killing hCLL-1-positive acute myeloid leukemia (AML) cells both in vitro and in vivo. This work provides novel ADC candidates for combating AML and supports ARC-ADC as a general and versatile approach for producing site-specific ADCs with defined DARs.
Collapse
Affiliation(s)
- Zhefu Dai
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Xiao-Nan Zhang
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Qinqin Cheng
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Fan Fei
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Tianling Hou
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Jiawei Li
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Alireza Abdolvahabi
- Mass Spectrometry Core Facility, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Junji Watanabe
- Translational Research Laboratory, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Hua Pei
- Titus Family Department of Clinical Pharmacy, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Goar Smbatyan
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Jianming Xie
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Heinz-Josef Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA
| | - Stan G Louie
- Titus Family Department of Clinical Pharmacy, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA
| | - Yong Zhang
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA; Department of Chemistry, Dornsife College of Letters, Arts and Sciences, University of Southern California, Los Angeles, CA 90089, USA; Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA 90089, USA; Research Center for Liver Diseases, University of Southern California, Los Angeles, CA 90089, USA.
| |
Collapse
|
20
|
Daver N, Salhotra A, Brandwein JM, Podoltsev NA, Pollyea DA, Jurcic JG, Assouline S, Yee K, Li M, Pourmohamad T, Samineni D, Sumiyoshi T, Vaze A, Dere RC, Ma C, Cooper J. A Phase I dose-escalation study of DCLL9718S, an antibody-drug conjugate targeting C-type lectin-like molecule-1 (CLL-1) in patients with acute myeloid leukemia. Am J Hematol 2021; 96:E175-E179. [PMID: 33617672 PMCID: PMC8252033 DOI: 10.1002/ajh.26136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 02/15/2021] [Indexed: 01/21/2023]
Affiliation(s)
- Naval Daver
- Department of Leukemia MD Anderson Cancer Center Houston Texas
| | | | | | | | - Daniel A. Pollyea
- Division of Hematology, Department of Medicine University of Colorado Aurora Colorado
| | - Joseph G. Jurcic
- Columbia University Irving Medical Center New York Presbyterian Hospital, and Herbert Irving Comprehensive Cancer Center, Columbia University New York New York
| | - Sarit Assouline
- Jewish General Hospital, McGill University Montreal Quebec Canada
| | - Karen Yee
- Department of Medical Oncology Princess Margaret Hospital Toronto Ontario Canada
| | - Mengsong Li
- Genentech, Inc. South San Francisco California
| | | | | | | | - Anjali Vaze
- Genentech, Inc. South San Francisco California
| | | | - Connie Ma
- Genentech, Inc. South San Francisco California
| | | |
Collapse
|
21
|
Gurney M, O’Dwyer M. Realizing Innate Potential: CAR-NK Cell Therapies for Acute Myeloid Leukemia. Cancers (Basel) 2021; 13:1568. [PMID: 33805422 PMCID: PMC8036691 DOI: 10.3390/cancers13071568] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/21/2021] [Accepted: 03/25/2021] [Indexed: 02/06/2023] Open
Abstract
Next-generation cellular immunotherapies seek to improve the safety and efficacy of approved CD19 chimeric antigen receptor (CAR) T-cell products or apply their principles across a growing list of targets and diseases. Supported by promising early clinical experiences, CAR modified natural killer (CAR-NK) cell therapies represent a complementary and potentially off-the-shelf, allogeneic solution. While acute myeloid leukemia (AML) represents an intuitive disease in which to investigate CAR based immunotherapies, key biological differences to B-cell malignancies have complicated progress to date. As CAR-T cell trials treating AML are growing in number, several CAR-NK cell approaches are also in development. In this review we explore why CAR-NK cell therapies may be particularly suited to the treatment of AML. First, we examine the established role NK cells play in AML biology and the existing anti-leukemic activity of NK cell adoptive transfer. Next, we appraise potential AML target antigens and consider common and unique challenges posed relative to treating B-cell malignancies. We summarize the current landscape of CAR-NK development in AML, and potential targets to augment CAR-NK cell therapies pharmacologically and through genetic engineering. Finally, we consider the broader landscape of competing immunotherapeutic approaches to AML treatment. In doing so we evaluate the innate potential, status and remaining barriers for CAR-NK based AML immunotherapy.
Collapse
Affiliation(s)
- Mark Gurney
- Apoptosis Research Center, National University of Ireland Galway, H91 TK33 Galway, Ireland;
| | - Michael O’Dwyer
- Apoptosis Research Center, National University of Ireland Galway, H91 TK33 Galway, Ireland;
- ONK Therapeutics Ltd., H91 V6KV Galway, Ireland
| |
Collapse
|
22
|
C-Type Lectin-Like Molecule-1 as a Biomarker for Diagnosis and Prognosis in Acute Myeloid Leukemia: A Preliminary Study. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6643948. [PMID: 33778076 PMCID: PMC7979301 DOI: 10.1155/2021/6643948] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/29/2021] [Accepted: 02/07/2021] [Indexed: 02/05/2023]
Abstract
Objective AML is a heterogeneous disease both in genomic and proteomic backgrounds, and variable outcomes may appear in the same cytogenetic risk group. Therefore, it is still necessary to identify new antigens that contribute to diagnostic information and to refine the current risk stratification. Methods The expression of C-type lectin-like molecule-1 (CLL-1) in AML blasts was examined in 52 patients with newly diagnosed or relapsed/refractory AML and was compared with two other classic markers CD33 and CD34 in AML, in order to assess the value of CLL-1 as an independent biomarker or in combination with other markers for diagnosis in AML. Subsequently, the value of CLL-1 as a biomarker for prognosis was assessed in this malignant tumor. Results The results showed that CLL-1 was expressed on the cell surface of the majority of AML blasts (78.8%) and also expressed on leukemic stem cells in varying degree but absent on normal hematopoietic stem cells. Notably, CLL-1 was able to complement the classic markers CD33 or CD34. After dividing the cases into CLL-1high and CLL-1low groups according to cutoff 59.0%, we discovered that event-free survival and overall survival (OS) of the CLL-1low group were significantly lower than that of the CLL-1high group, and low CLL-1 expression seems to be independently associated with shorter OS. Conclusions These preliminary observations identified CLL-1 as a biomarker for diagnosis and prognosis of AML.
Collapse
|
23
|
Dragovich PS, Pillow TH, Blake RA, Sadowsky JD, Adaligil E, Adhikari P, Chen J, Corr N, Dela Cruz-Chuh J, Del Rosario G, Fullerton A, Hartman SJ, Jiang F, Kaufman S, Kleinheinz T, Kozak KR, Liu L, Lu Y, Mulvihill MM, Murray JM, O'Donohue A, Rowntree RK, Sawyer WS, Staben LR, Wai J, Wang J, Wei B, Wei W, Xu Z, Yao H, Yu SF, Zhang D, Zhang H, Zhang S, Zhao Y, Zhou H, Zhu X. Antibody-Mediated Delivery of Chimeric BRD4 Degraders. Part 2: Improvement of In Vitro Antiproliferation Activity and In Vivo Antitumor Efficacy. J Med Chem 2021; 64:2576-2607. [PMID: 33596073 DOI: 10.1021/acs.jmedchem.0c01846] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Heterobifunctional compounds that direct the ubiquitination of intracellular proteins in a targeted manner via co-opted ubiquitin ligases have enormous potential to transform the field of medicinal chemistry. These chimeric molecules, often termed proteolysis-targeting chimeras (PROTACs) in the chemical literature, enable the controlled degradation of specific proteins via their direction to the cellular proteasome. In this report, we describe the second phase of our research focused on exploring antibody-drug conjugates (ADCs), which incorporate BRD4-targeting chimeric degrader entities. We employ a new BRD4-binding fragment in the construction of the chimeric ADC payloads that is significantly more potent than the corresponding entity utilized in our initial studies. The resulting BRD4-degrader antibody conjugates exhibit potent and antigen-dependent BRD4 degradation and antiproliferation activities in cell-based experiments. Multiple ADCs bearing chimeric BRD4-degrader payloads also exhibit strong, antigen-dependent antitumor efficacy in mouse xenograft assessments that employ several different tumor models.
Collapse
Affiliation(s)
- Peter S Dragovich
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas H Pillow
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Robert A Blake
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jack D Sadowsky
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Emel Adaligil
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Pragya Adhikari
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jinhua Chen
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Nicholas Corr
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | | | | | - Aaron Fullerton
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Steven J Hartman
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Fan Jiang
- Viva Biotech, Structural Biology, 334 Aidisheng Road, Zhangjiang High-Tech Park, Shanghai 201203, China
| | - Susan Kaufman
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Tracy Kleinheinz
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Katherine R Kozak
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Liling Liu
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ying Lu
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Melinda M Mulvihill
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jeremy M Murray
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Aimee O'Donohue
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rebecca K Rowntree
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - William S Sawyer
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Leanna R Staben
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - John Wai
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Jian Wang
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - BinQing Wei
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Wentao Wei
- Viva Biotech, Structural Biology, 334 Aidisheng Road, Zhangjiang High-Tech Park, Shanghai 201203, China
| | - Zijin Xu
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Hui Yao
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Shang-Fan Yu
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Donglu Zhang
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Hongyan Zhang
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Shenhua Zhang
- Viva Biotech, Structural Biology, 334 Aidisheng Road, Zhangjiang High-Tech Park, Shanghai 201203, China
| | - Yongxin Zhao
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Hao Zhou
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Xiaoyu Zhu
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| |
Collapse
|
24
|
Dragovich PS, Pillow TH, Blake RA, Sadowsky JD, Adaligil E, Adhikari P, Bhakta S, Blaquiere N, Chen J, Dela Cruz-Chuh J, Gascoigne KE, Hartman SJ, He M, Kaufman S, Kleinheinz T, Kozak KR, Liu L, Liu L, Liu Q, Lu Y, Meng F, Mulvihill MM, O'Donohue A, Rowntree RK, Staben LR, Staben ST, Wai J, Wang J, Wei B, Wilson C, Xin J, Xu Z, Yao H, Zhang D, Zhang H, Zhou H, Zhu X. Antibody-Mediated Delivery of Chimeric BRD4 Degraders. Part 1: Exploration of Antibody Linker, Payload Loading, and Payload Molecular Properties. J Med Chem 2021; 64:2534-2575. [PMID: 33596065 DOI: 10.1021/acs.jmedchem.0c01845] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The biological and medicinal impacts of proteolysis-targeting chimeras (PROTACs) and related chimeric molecules that effect intracellular degradation of target proteins via ubiquitin ligase-mediated ubiquitination continue to grow. However, these chimeric entities are relatively large compounds that often possess molecular characteristics, which may compromise oral bioavailability, solubility, and/or in vivo pharmacokinetic properties. We therefore explored the conjugation of such molecules to monoclonal antibodies using technologies originally developed for cytotoxic payloads so as to provide alternate delivery options for these novel agents. In this report, we describe the first phase of our systematic development of antibody-drug conjugates (ADCs) derived from bromodomain-containing protein 4 (BRD4)-targeting chimeric degrader entities. We demonstrate the antigen-dependent delivery of the degrader payloads to PC3-S1 prostate cancer cells along with related impacts on MYC transcription and intracellular BRD4 levels. These experiments culminate with the identification of one degrader conjugate, which exhibits antigen-dependent antiproliferation effects in LNCaP prostate cancer cells.
Collapse
Affiliation(s)
- Peter S Dragovich
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas H Pillow
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Robert A Blake
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jack D Sadowsky
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Emel Adaligil
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Pragya Adhikari
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Sunil Bhakta
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Nicole Blaquiere
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jinhua Chen
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | | | - Karen E Gascoigne
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Steven J Hartman
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Mingtao He
- Pharmaron Beijing, Co. Ltd., 6 Tai He Road, BDA, Beijing 100176, China
| | - Susan Kaufman
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Tracy Kleinheinz
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Katherine R Kozak
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Liang Liu
- Pharmaron Beijing, Co. Ltd., 6 Tai He Road, BDA, Beijing 100176, China
| | - Liling Liu
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Qi Liu
- Pharmaron Beijing, Co. Ltd., 6 Tai He Road, BDA, Beijing 100176, China
| | - Ying Lu
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Fanwei Meng
- Pharmaron Beijing, Co. Ltd., 6 Tai He Road, BDA, Beijing 100176, China
| | - Melinda M Mulvihill
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Aimee O'Donohue
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rebecca K Rowntree
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Leanna R Staben
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Steven T Staben
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - John Wai
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Jian Wang
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - BinQing Wei
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Catherine Wilson
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jianfeng Xin
- Pharmaron Beijing, Co. Ltd., 6 Tai He Road, BDA, Beijing 100176, China
| | - Zijin Xu
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Hui Yao
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Donglu Zhang
- Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Hongyan Zhang
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Hao Zhou
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Xiaoyu Zhu
- WuXi AppTec, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| |
Collapse
|
25
|
Tabata R, Chi S, Yuda J, Minami Y. Emerging Immunotherapy for Acute Myeloid Leukemia. Int J Mol Sci 2021; 22:1944. [PMID: 33669431 PMCID: PMC7920435 DOI: 10.3390/ijms22041944] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 12/12/2022] Open
Abstract
Several immune checkpoint molecules and immune targets in leukemic cells have been investigated. Recent studies have suggested the potential clinical benefits of immuno-oncology (IO) therapy against acute myeloid leukemia (AML), especially targeting CD33, CD123, and CLL-1, as well as immune checkpoint inhibitors (e.g., anti-PD (programmed cell death)-1 and anti-CTLA4 (cytotoxic T-lymphocyte-associated protein 4) antibodies) with or without conventional chemotherapy. Early-phase clinical trials of chimeric antigen receptor (CAR)-T or natural killer (NK) cells for relapsed/refractory AML showed complete remission (CR) or marked reduction of marrow blasts in a few enrolled patients. Bi-/tri-specific antibodies (e.g., bispecific T-cell engager (BiTE) and dual-affinity retargeting (DART)) exhibited 11-67% CR rates with 13-78% risk of cytokine-releasing syndrome (CRS). Conventional chemotherapy in combination with anti-PD-1/anti-CTLA4 antibody for relapsed/refractory AML showed 10-36% CR rates with 7-24 month-long median survival. The current advantages of IO therapy in the field of AML are summarized herein. However, although cancer vaccination should be included in the concept of IO therapy, it is not mentioned in this review because of the paucity of relevant evidence.
Collapse
Affiliation(s)
- Rikako Tabata
- Department of Hematology, National Cancer Center Hospital East, Kashiwa 277-8577, Japan; (R.T.); (S.C.); (J.Y.)
- Department of Hematology, Kameda Medical Center, Kamogawa 296-8602, Japan
| | - SungGi Chi
- Department of Hematology, National Cancer Center Hospital East, Kashiwa 277-8577, Japan; (R.T.); (S.C.); (J.Y.)
| | - Junichiro Yuda
- Department of Hematology, National Cancer Center Hospital East, Kashiwa 277-8577, Japan; (R.T.); (S.C.); (J.Y.)
| | - Yosuke Minami
- Department of Hematology, National Cancer Center Hospital East, Kashiwa 277-8577, Japan; (R.T.); (S.C.); (J.Y.)
| |
Collapse
|
26
|
Gu W, Liu T, Fan D, Zhang J, Xia Y, Meng F, Xu Y, Cornelissen JJ, Liu Z, Zhong Z. A6 peptide-tagged, ultra-small and reduction-sensitive polymersomal vincristine sulfate as a smart and specific treatment for CD44+ acute myeloid leukemia. J Control Release 2021; 329:706-716. [DOI: 10.1016/j.jconrel.2020.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/15/2020] [Accepted: 10/02/2020] [Indexed: 01/04/2023]
|
27
|
Xu J, Niu T. Natural killer cell-based immunotherapy for acute myeloid leukemia. J Hematol Oncol 2020; 13:167. [PMID: 33287858 PMCID: PMC7720594 DOI: 10.1186/s13045-020-00996-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023] Open
Abstract
Despite considerable progress has been achieved in the treatment of acute myeloid leukemia over the past decades, relapse remains a major problem. Novel therapeutic options aimed at attaining minimal residual disease-negative complete remission are expected to reduce the incidence of relapse and prolong survival. Natural killer cell-based immunotherapy is put forward as an option to tackle the unmet clinical needs. There have been an increasing number of therapeutic dimensions ranging from adoptive NK cell transfer, chimeric antigen receptor-modified NK cells, antibodies, cytokines to immunomodulatory drugs. In this review, we will summarize different forms of NK cell-based immunotherapy for AML based on preclinical investigations and clinical trials.
Collapse
Affiliation(s)
- Jing Xu
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ting Niu
- Department of Hematology, West China Hospital, Sichuan University, Chengdu, 610041, China.
| |
Collapse
|
28
|
A new era of immuno-oncology in acute myeloid leukemia - antibody-based therapies and immune checkpoint inhibition. Best Pract Res Clin Haematol 2020; 33:101220. [PMID: 33279176 DOI: 10.1016/j.beha.2020.101220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 10/28/2020] [Indexed: 01/02/2023]
Abstract
Acute myeloid leukemia (AML) remains a therapeutically challenging malignancy with high rate of relapse and poor outcomes. There has been increased understanding of the molecular characteristics of AML and the various roles of the immune system in its pathogenesis, the result of which has led to the study and development of multiple immune-based approaches for this disease. In this review, we aim to provide an overview of the recent advancements made in antibody-based approaches to the treatment of AML including monoclonal antibodies, antibody-drug conjugates, and immune checkpoint inhibition. In addition, we provide insight and discuss the promise of these agents, some of which may soon enter the therapeutic armamentarium we currently employ against this lethal disease.
Collapse
|
29
|
Gonzaga RV, do Nascimento LA, Santos SS, Machado Sanches BA, Giarolla J, Ferreira EI. Perspectives About Self-Immolative Drug Delivery Systems. J Pharm Sci 2020; 109:3262-3281. [DOI: 10.1016/j.xphs.2020.08.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/27/2020] [Accepted: 08/17/2020] [Indexed: 12/14/2022]
|
30
|
Staben LR, Chen J, Cruz-Chuh JD, Del Rosario G, Go MA, Guo J, Khojasteh SC, Kozak KR, Li G, Ng C, Lewis Phillips GD, Pillow TH, Rowntree RK, Wai J, Wei B, Xu K, Xu Z, Yu SF, Zhang D, Dragovich PS. Systematic Variation of Pyrrolobenzodiazepine (PBD)-Dimer Payload Physicochemical Properties Impacts Efficacy and Tolerability of the Corresponding Antibody-Drug Conjugates. J Med Chem 2020; 63:9603-9622. [PMID: 32787101 DOI: 10.1021/acs.jmedchem.0c00691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cytotoxic pyrrolobenzodiazepine (PBD)-dimer molecules are frequently utilized as payloads for antibody-drug conjugates (ADCs), and many examples are currently in clinical development. In order to further explore this ADC payload class, the physicochemical properties of various PBD-dimer molecules were modified by the systematic introduction of acidic and basic moieties into their chemical structures. The impact of these changes on DNA binding, cell membrane permeability, and in vitro antiproliferation potency was, respectively, determined using a DNA alkylation assay, PAMPA assessments, and cell-based cytotoxicity measurements conducted with a variety of cancer lines. The modified PBD-dimer compounds were subsequently incorporated into CD22-targeting ADCs, and these entities were profiled in a variety of in vitro and in vivo experiments. The introduction of a strongly basic moiety into the PBD-dimer scaffold afforded a conjugate with dramatically worsened mouse tolerability properties relative to ADCs derived from related payloads, which lacked the basic group.
Collapse
Affiliation(s)
- Leanna R Staben
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jinhua Chen
- WuXi AppTec Co., Ltd, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | | | - Geoff Del Rosario
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Mary Ann Go
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jun Guo
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - S Cyrus Khojasteh
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Katherine R Kozak
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Guangmin Li
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Carl Ng
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | | | - Thomas H Pillow
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rebecca K Rowntree
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - John Wai
- WuXi AppTec Co., Ltd, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - BinQing Wei
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Keyang Xu
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Zijin Xu
- WuXi AppTec Co., Ltd, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Shang-Fan Yu
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Donglu Zhang
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Peter S Dragovich
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| |
Collapse
|
31
|
Oliai C, Schiller G. How to address second and therapy-related acute myelogenous leukaemia. Br J Haematol 2020; 188:116-128. [PMID: 31863469 DOI: 10.1111/bjh.16354] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Secondary acute myelogenous leukaemia (AML), as compared to de novo AML, occurs in the more elderly population, is independently more resistant to cytotoxic chemotherapy, has a higher relapse rate, and a worse prognosis. Secondary AML (sAML) is a heterogeneous disease, both biologically and clinically, even within the World Health Organization subgroups of sAML. Outcomes are the poorest in subgroups with sAML arising from an antecedent haematologic disorder which has been previously treated (ts-AML), and sAML in patients <55 years of age. This review describes the suboptimal outcomes of contemporary therapy, to support the notion of an unmet need for innovative treatment strategies in sAML. Despite the recent approval of CPX-351, long-term outcomes for this high-risk disease remain dismal. Resistance mechanisms to intensive chemotherapy contribute to relapse. Targeted immune therapy may avoid multidrug resistance mechanisms, but are unlikely to provide long-term remission due to a complex and rapidly evolving clonal disease profile. Advances for sAML will likely be accomplished by CAR T cell therapy or bispecific antibodies providing a bridge to allogeneic stem cell transplantation. Therefore, focus should be placed on novel strategies that can augment the untargeted effector function of allogeneic grafts.
Collapse
Affiliation(s)
- Caspian Oliai
- David Geffen School of Medicine at University of California, Los Angeles, CA, USA.,Division of Hematology & Oncology, Hematological Malignancies and Stem Cell Transplantation Program, Los Angeles, CA, USA
| | - Gary Schiller
- David Geffen School of Medicine at University of California, Los Angeles, CA, USA.,Division of Hematology & Oncology, Hematological Malignancies and Stem Cell Transplantation Program, Los Angeles, CA, USA
| |
Collapse
|
32
|
Kosaka M, Zhang D, Wong S, Yan Z. NADPH-Independent Inactivation of CYP2B6 and NADPH-Dependent Inactivation of CYP3A4/5 by PBD: Potential Implication for Assessing Covalent Modulators for Time-Dependent Inhibition. Drug Metab Dispos 2020; 48:655-661. [DOI: 10.1124/dmd.120.090878] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 05/13/2020] [Indexed: 02/03/2023] Open
|
33
|
Bashraheel SS, Domling A, Goda SK. Update on targeted cancer therapies, single or in combination, and their fine tuning for precision medicine. Biomed Pharmacother 2020; 125:110009. [PMID: 32106381 DOI: 10.1016/j.biopha.2020.110009] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 02/04/2020] [Accepted: 02/12/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Until recently, patients who have the same type and stage of cancer all receive the same treatment. It has been established, however, that individuals with the same disease respond differently to the same therapy. Further, each tumor undergoes genetic changes that cause cancer to grow and metastasize. The changes that occur in one person's cancer may not occur in others with the same cancer type. These differences also lead to different responses to treatment. Precision medicine, also known as personalized medicine, is a strategy that allows the selection of a treatment based on the patient's genetic makeup. In the case of cancer, the treatment is tailored to take into account the genetic changes that may occur in an individual's tumor. Precision medicine, therefore, could be defined in terms of the targets involved in targeted therapy. METHODS A literature search in electronic data bases using keywords "cancer targeted therapy, personalized medicine and cancer combination therapies" was conducted to include papers from 2010 to June 2019. RESULTS Recent developments in strategies of targeted cancer therapy were reported. Specifically, on the two types of targeted therapy; first, immune-based therapy such as the use of immune checkpoint inhibitors (ICIs), immune cytokines, tumor-targeted superantigens (TTS) and ligand targeted therapeutics (LTTs). The second strategy deals with enzyme/small molecules-based therapies, such as the use of a proteolysis targeting chimera (PROTAC), antibody-drug conjugates (ADC) and antibody-directed enzyme prodrug therapy (ADEPT). The precise targeting of the drug to the gene or protein under attack was also investigated, in other words, how precision medicine can be used to tailor treatments. CONCLUSION The conventional therapeutic paradigm for cancer and other diseases has focused on a single type of intervention for all patients. However, a large literature in oncology supports the therapeutic benefits of a precision medicine approach to therapy as well as combination therapies.
Collapse
Affiliation(s)
- Sara S Bashraheel
- Protein Engineering Unit, Life and Science Research Department, Anti-Doping Lab-Qatar (ADLQ), Doha, Qatar; Drug Design Group, Department of Pharmacy, University of Groningen, Groningen, Netherlands
| | - Alexander Domling
- Drug Design Group, Department of Pharmacy, University of Groningen, Groningen, Netherlands
| | - Sayed K Goda
- Cairo University, Faculty of Science, Chemistry Department, Giza, Egypt.
| |
Collapse
|
34
|
Abadir E, Gasiorowski RE, Silveira PA, Larsen S, Clark GJ. Is Hematopoietic Stem Cell Transplantation Required to Unleash the Full Potential of Immunotherapy in Acute Myeloid Leukemia? J Clin Med 2020; 9:E554. [PMID: 32085578 PMCID: PMC7073661 DOI: 10.3390/jcm9020554] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 12/22/2022] Open
Abstract
From monoclonal antibodies (mAbs) to Chimeric Antigen Receptor (CAR) T cells, immunotherapies have enhanced the efficacy of treatments against B cell malignancies. The same has not been true for Acute Myeloid Leukemia (AML). Hematologic toxicity has limited the potential of modern immunotherapies for AML at preclinical and clinical levels. Gemtuzumab Ozogamicin has demonstrated hematologic toxicity, but the challenge of preserving normal hematopoiesis has become more apparent with the development of increasingly potent immunotherapies. To date, no single surface molecule has been identified that is able to differentiate AML from Hematopoietic Stem and Progenitor Cells (HSPC). Attempts have been made to spare hematopoiesis by targeting molecules expressed only on later myeloid progenitors as well as AML or using toxins that selectively kill AML over HSPC. Other strategies include targeting aberrantly expressed lymphoid molecules or only targeting monocyte-associated proteins in AML with monocytic differentiation. Recently, some groups have accepted that stem cell transplantation is required to access potent AML immunotherapy and envision it as a rescue to avoid severe hematologic toxicity. Whether it will ever be possible to differentiate AML from HSPC using surface molecules is unclear. Unless true specific AML surface targets are discovered, stem cell transplantation could be required to harness the true potential of immunotherapy in AML.
Collapse
Affiliation(s)
- Edward Abadir
- Dendritic Cell Research, ANZAC Research Institute, Concord 2139, NSW, Australia;
- Institute of Haematology, Royal Prince Alfred Hospital, Camperdown 2050, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
| | - Robin E. Gasiorowski
- The University of Sydney, Camperdown 2039, NSW, Australia;
- Department of Haematology, Concord Repatriation and General Hospital, Concord 2039, NSW, Australia
| | - Pablo A. Silveira
- Dendritic Cell Research, ANZAC Research Institute, Concord 2139, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
| | - Stephen Larsen
- Institute of Haematology, Royal Prince Alfred Hospital, Camperdown 2050, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
| | - Georgina J. Clark
- Dendritic Cell Research, ANZAC Research Institute, Concord 2139, NSW, Australia;
- The University of Sydney, Camperdown 2039, NSW, Australia;
| |
Collapse
|
35
|
Mitchell K, Steidl U. Targeting Immunophenotypic Markers on Leukemic Stem Cells: How Lessons from Current Approaches and Advances in the Leukemia Stem Cell (LSC) Model Can Inform Better Strategies for Treating Acute Myeloid Leukemia (AML). Cold Spring Harb Perspect Med 2020; 10:cshperspect.a036251. [PMID: 31451539 DOI: 10.1101/cshperspect.a036251] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Therapies targeting cell-surface antigens in acute myeloid leukemia (AML) have been tested over the past 20 years with limited improvement in overall survival. Recent advances in the understanding of AML pathogenesis support therapeutic targeting of leukemia stem cells as the most promising avenue toward a cure. In this review, we provide an overview of the evolving leukemia stem cell (LSC) model, including evidence of the cell of origin, cellular and molecular disease architecture, and source of relapse in AML. In addition, we explore limitations of current targeted strategies utilized in AML and describe the various immunophenotypic antigens that have been proposed as LSC-directed therapeutic targets. We draw lessons from current approaches as well as from the (pre)-LSC model to suggest criteria that immunophenotypic targets should meet for more specific and effective elimination of disease-initiating clones, highlighting in detail a few targets that we suggest fit these criteria most completely.
Collapse
Affiliation(s)
- Kelly Mitchell
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Ulrich Steidl
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Department of Medicine (Oncology), Division of Hemato-Oncology, Albert Einstein College of Medicine-Montefiore Medical Center, Bronx, New York 10461, USA.,Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, New York 10461, USA.,Institute for Stem Cell and Regenerative Medicine Research, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| |
Collapse
|
36
|
Deng Z, Hu J, Liu S. Disulfide-Based Self-Immolative Linkers and Functional Bioconjugates for Biological Applications. Macromol Rapid Commun 2019; 41:e1900531. [PMID: 31755619 DOI: 10.1002/marc.201900531] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/05/2019] [Indexed: 12/12/2022]
Abstract
It is of vital importance to reversibly mask and selectively activate bioactive agents for advanced therapeutic and diagnostic purposes, aiming to efficiently suppress background interferences and attenuate systemic toxicity. This strategy has been involved in diverse applications spanning from chemical/biological sensors and diagnostics to drug delivery nanocarriers. Among these, redox-responsive disulfide linkages have been extensively utilized by taking advantage of extracellular and intracellular glutathione (GSH) gradients. However, direct conjugation of cleavable triggers to bioactive agents through disulfide bonds suffers from bulky steric hindrance and limited choice of trigger-drug combinations. Fortunately, the emergence of disulfide self-immolative linkers (DSILs) provides a general and robust strategy to not only mask various bioactive agents through the formation of dynamic disulfide linkages but also make it possible to be selectively activated upon disulfide cleavage in the reductive cytoplasmic milieu. In this review, recent developments in DSILs are focused with special attention on emerging chemical design strategies and functional applications in the biomedical field.
Collapse
Affiliation(s)
- Zhengyu Deng
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, 96 Jinzhai Road, Hefei, 230026, China
| |
Collapse
|
37
|
Pillow TH, Adhikari P, Blake RA, Chen J, Del Rosario G, Deshmukh G, Figueroa I, Gascoigne KE, Kamath AV, Kaufman S, Kleinheinz T, Kozak KR, Latifi B, Leipold DD, Sing Li C, Li R, Mulvihill MM, O'Donohue A, Rowntree RK, Sadowsky JD, Wai J, Wang X, Wu C, Xu Z, Yao H, Yu S, Zhang D, Zang R, Zhang H, Zhou H, Zhu X, Dragovich PS. Antibody Conjugation of a Chimeric BET Degrader Enables
in vivo
Activity. ChemMedChem 2019; 15:17-25. [DOI: 10.1002/cmdc.201900497] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/11/2019] [Indexed: 12/12/2022]
Affiliation(s)
| | | | | | - Jinhua Chen
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | | | - Gauri Deshmukh
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | | | | | | | - Susan Kaufman
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | | | | | - Brandon Latifi
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | | | - Chun Sing Li
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | - Ruina Li
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | | | | | | | | | - John Wai
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | - Xinxin Wang
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | - Cong Wu
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Zijin Xu
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | - Hui Yao
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | - Shang‐Fan Yu
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Donglu Zhang
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Richard Zang
- Genentech Inc. 1 DNA Way South San Francisco CA 94080 USA
| | - Hongyan Zhang
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | - Hao Zhou
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | - Xiaoyu Zhu
- Wuxi Apptec 288 Fute Zhong Road Waigaoqiao Free Trade Zone Shanghai 200131 China
| | | |
Collapse
|
38
|
Yu B, Liu D. Gemtuzumab ozogamicin and novel antibody-drug conjugates in clinical trials for acute myeloid leukemia. Biomark Res 2019; 7:24. [PMID: 31695916 PMCID: PMC6824118 DOI: 10.1186/s40364-019-0175-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 10/18/2019] [Indexed: 01/11/2023] Open
Abstract
Targeted agents are increasingly used for the therapy of acute myeloid leukemia (AML). Gemtuzumab ozogamicin (GO) is the first antibody-drug conjugate (ADC) approved for induction therapy of AML. When used in fractionated doses, GO combined with the conventional cytarabine/anthracycline-based induction chemotherapy significantly improves the outcome of previously untreated AML patients. Single-agent GO is effective and safe for AML patient ineligible for intensive chemotherapy. Multiple combination regimens incorporating GO have also been recommended as potential alternative options. In addition, several novel ADCs targeting CD33, CD123 and CLL-1 are currently undergoing preclinical or early clinical investigations. In this review, we summarized the efficacy and limitations of GO as well as novel ADCs for adult AML patients.
Collapse
Affiliation(s)
- Bo Yu
- Department of Medicine, Lincoln Medical Center, Bronx, NY USA
| | - Delong Liu
- Department of Medicine, New York Medical College and Westchester Medical Center, Valhalla, NY USA
- Department of Oncology, The First affiliated Hospital of Zhengzhou University, Zhengzhou, China
| |
Collapse
|
39
|
Shang Y, Zhou F. Current Advances in Immunotherapy for Acute Leukemia: An Overview of Antibody, Chimeric Antigen Receptor, Immune Checkpoint, and Natural Killer. Front Oncol 2019; 9:917. [PMID: 31616632 PMCID: PMC6763689 DOI: 10.3389/fonc.2019.00917] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 09/03/2019] [Indexed: 12/13/2022] Open
Abstract
Recently, due to the application of hematopoietic stem cell transplantation and small molecule inhibitor, the survival of acute leukemia is prolonged. However, the 5 year survival rate remains low due to a high incidence of relapse. Immunotherapy is expected to improve the prognosis of patients with relapsed or refractory hematological malignancies because it does not rely on the cytotoxic mechanisms of conventional therapy. In this paper, the advances of immunotherapy in acute leukemia are reviewed from the aspects of Antibody including Unconjugated antibodies, Antibody-drug conjugate and Bispecific antibody, Chimeric Antigen Receptor (CARs), Immune checkpoint, Natural killer cells. The immunological features, mechanisms and limitation in clinic will be described.
Collapse
Affiliation(s)
- Yufeng Shang
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Fuling Zhou
- Department of Hematology, Zhongnan Hospital of Wuhan University, Wuhan, China
| |
Collapse
|
40
|
Li SC, Luo J, Lee KL. Cancer Niche as a Garbage Disposal Machine: Implications of TCM-Mediated Balance of Body-Disease for Treatment of Cancer. ACTA ACUST UNITED AC 2019; 1. [PMID: 31453571 PMCID: PMC6709992 DOI: 10.33552/ojcam.2019.01.000514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Cancer epidemic led to worldwide to search for a new “game changer” concept to govern cancer research and cancer treatment. Western medicine-based cancer research has been extending the impasse without resolution in sigh for improving survival of patients with solid malignant tumors in the last four decades due to heterogeneity in cancer tissues. Such a deadlock charts a course to learn lessons from the developing countries, directly or indirectly to complement the exhausted Western medicine. We propose a new concept of “Cancer niche as a garbage disposal machine” with implications of traditional Chinese medicine-mediated restoration of normal balance between body and disease to bring the fight against cancer under control.
Collapse
Affiliation(s)
- Shengwen Calvin Li
- Department of Neurology, University of California-Irvine (UCI) School of Medicine; Children's Hospital of Orange County (CHOC), CHOC Children's Research Institute, Neuro-Oncology and Stem Cell Research Laboratory (NSCL), USA
| | - Jane Luo
- AB Sciex, Inc., Danaher Corporation, USA
| | - Katherine L Lee
- University of California-Irvine School of Social Ecology, Social and Behavioral Sciences Gateway, USA
| |
Collapse
|
41
|
Acute Myeloid Leukemia Stem Cell Heterogeneity and Its Clinical Relevance. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1139:153-169. [DOI: 10.1007/978-3-030-14366-4_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
42
|
Morsink LM, Walter RB. Novel monoclonal antibody-based therapies for acute myeloid leukemia. Best Pract Res Clin Haematol 2019; 32:116-126. [PMID: 31203993 DOI: 10.1016/j.beha.2019.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 05/07/2019] [Indexed: 12/21/2022]
Abstract
There has been long-standing interest in using monoclonal antibodies to improve outcomes of people with acute myeloid leukemia (AML). While several candidate therapeutics have failed at various stages of clinical testing, improved survival of some patients receiving the CD33 antibody-drug conjugate gemtuzumab ozogamicin has provided first evidence that monoclonal antibodies have a role in the armamentarium against AML. Over the last several years, work to improve the success of monoclonal antibody-based therapies in AML has focused on the identification and exploration of new antigen targets as much as on the development of novel treatment formats such as use of unconjugated engineered monoclonal antibodies and conjugated antibodies, delivering highly potent small molecule drugs or radionuclides to AML cells. Here, we will provide a brief overview of current efforts with such investigational monoclonal antibody-based therapeutics.
Collapse
Affiliation(s)
- Linde M Morsink
- Department of Hematology, University Medical Center Groningen, Groningen, the Netherlands
| | - Roland B Walter
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Medicine, Division of Hematology, University of Washington, Seattle, WA, USA; Department of Epidemiology, University of Washington, Seattle, WA, USA; Department of Pathology, University of Washington, Seattle, WA, USA.
| |
Collapse
|
43
|
Lin TY, Zhu Y, Li Y, Zhang H, Ma AH, Long Q, Keck J, Lam KS, Pan CX, Jonas BA. Daunorubicin-containing CLL1-targeting nanomicelles have anti-leukemia stem cell activity in acute myeloid leukemia. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 20:102004. [PMID: 31055076 DOI: 10.1016/j.nano.2019.04.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/24/2019] [Accepted: 04/12/2019] [Indexed: 10/26/2022]
Abstract
Patients with acute myeloid leukemia have a very poor prognosis related to a high rate of relapse and drug-related toxicity. The ability of leukemia stem cells (LSCs) to survive chemotherapy is primarily responsible for relapse, and eliminating LSCs is ultimately essential for cure. We developed novel disulfide-crosslinked CLL1-targeting micelles (DC-CTM), which can deliver high concentrations of daunorubicin (DNR) into both bulk leukemia cells and LSCs. Compared to free DNR, DC-CTM-DNR had a longer half-life, increased DNR area under the curve concentration by 11-fold, and exhibited a superior toxicity profile. In patient-derived AML xenograft models, DC-CTM-DNR treatment led to significant decreases in AML engraftment and impairment of secondary transplantation compared to control groups. Collectively, we demonstrate superior anti-LSC/AML efficacy, and preferable pharmacokinetic and toxicity profiles of DC-CTM-DNR compared to free DNR. DC-CTM-DNR has the potential to significantly improve treatment outcomes and reduce therapy-related morbidity and mortality for patients with AML.
Collapse
Affiliation(s)
- Tzu-Yin Lin
- Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA; LP Therapeutics, Inc, Davis, CA; The Jackson Laboratory, Sacramento, CA, USA.
| | - Yanjun Zhu
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Yuanpei Li
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Hongyong Zhang
- Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Ai-Hong Ma
- Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Qilai Long
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - James Keck
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Chong-Xian Pan
- Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA; Department of Urology, University of California Davis, Sacramento, CA 95817, USA; VA Northern California Health Care System, Mather, CA
| | - Brian A Jonas
- Department of Internal Medicine, University of California Davis, Sacramento, CA 95817, USA; VA Northern California Health Care System, Mather, CA..
| |
Collapse
|
44
|
Ma H, Padmanabhan IS, Parmar S, Gong Y. Targeting CLL-1 for acute myeloid leukemia therapy. J Hematol Oncol 2019; 12:41. [PMID: 31014360 PMCID: PMC6480870 DOI: 10.1186/s13045-019-0726-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 03/27/2019] [Indexed: 02/05/2023] Open
Abstract
Despite major scientific discoveries and novel therapies over the past four decades, the treatment outcomes of acute myeloid leukemia (AML), especially in the adult patient population remain dismal. In the past few years, an increasing number of targets such as CD33, CD123, CLL-1, CD47, CD70, and TIM3, have been developed for immunotherapy of AML. Among them, CLL-1 has attracted the researchers’ attention due to its high expression in AML while being absent in normal hematopoietic stem cell. Accumulating evidence have demonstrated CLL-1 is an ideal target for AML. In this paper, we will review the expression of CLL-1 on normal cells and AML, the value of CLL-1 in diagnosis and follow-up, and targeting CLL-1 therapy-based antibody and chimeric antigen receptor T cell therapy as well as providing an overview of CLL-1 as a target for AML.
Collapse
Affiliation(s)
- Hongbing Ma
- Hematology Department, West China Hospital, Sichuan University, Chengdu, China
| | | | - Simrit Parmar
- Department of Lymphoma and Myeloma, MD Anderson Cancer Center, Texas University, Houston, USA.
| | - Yuping Gong
- Hematology Department, West China Hospital, Sichuan University, Chengdu, China.
| |
Collapse
|
45
|
Daga S, Rosenberger A, Quehenberger F, Krisper N, Prietl B, Reinisch A, Zebisch A, Sill H, Wölfler A. High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34-positive AML. Cancer Med 2019; 8:1771-1778. [PMID: 30848055 PMCID: PMC6488118 DOI: 10.1002/cam4.2053] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/24/2019] [Accepted: 02/04/2019] [Indexed: 12/11/2022] Open
Abstract
Acute myeloid leukemia (AML) is driven by a minor fraction of leukemic stem cells (LSCs) whose persistence is considered being the primary cause of disease relapse. A detailed characterization of the surface immunophenotype of LSCs to discriminate them from bulk leukemic blasts may enable successful targeting of this population thereby improving patient outcomes in AML. To identify surface markers, which may reflect LSC activity at diagnosis, we performed a detailed analysis of 16 putative LSC markers in CD34/38 leukemic subcompartments of 150 diagnostic AML samples using multicolor flow cytometry. The most promising markers were then selected to determine a possible correlation of their expression with a recently published LSC gene signature. We found GPR56 and CLL-1 to be the most prominently differently expressed surface markers in AML subcompartments. While GPR56 was highest expressed within the LSC-enriched CD34+ 38- subcompartment as compared to CD34+ 38+ and CD34- leukemic bulk cells, CLL-1 expression was lowest in CD34+ 38- leukemic cells and increased in CD34+ 38+ and CD34- blasts. Furthermore, high GPR56 surface expression in CD34+ 38- leukemic cells correlated with a recently published LSC gene expression signature and was associated with decreased overall survival in patients receiving intensive chemotherapy. In contrast, CLL-1 expression correlated inversely with the LSC gene signature and was not informative on outcome. Our data strongly support GPR56 as a promising clinically relevant marker for identifying leukemic cells with LSC activity at diagnosis in CD34-positive AML.
Collapse
Affiliation(s)
- Shruti Daga
- Division of Hematology, Medical University of Graz, Graz, Austria.,CBmed Center of Biomarker Research in Medicine, Graz, Austria
| | - Angelika Rosenberger
- Division of Hematology, Medical University of Graz, Graz, Austria.,CBmed Center of Biomarker Research in Medicine, Graz, Austria
| | - Franz Quehenberger
- Institute of Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria
| | - Nina Krisper
- CBmed Center of Biomarker Research in Medicine, Graz, Austria
| | - Barbara Prietl
- CBmed Center of Biomarker Research in Medicine, Graz, Austria.,Division of Endocrinology and Diabetology, Medical University of Graz, Graz, Austria
| | - Andreas Reinisch
- Division of Hematology, Medical University of Graz, Graz, Austria
| | - Armin Zebisch
- Division of Hematology, Medical University of Graz, Graz, Austria
| | - Heinz Sill
- Division of Hematology, Medical University of Graz, Graz, Austria
| | - Albert Wölfler
- Division of Hematology, Medical University of Graz, Graz, Austria.,CBmed Center of Biomarker Research in Medicine, Graz, Austria
| |
Collapse
|
46
|
Leipold DD, Figueroa I, Masih S, Latifi B, Yip V, Shen BQ, Dere RC, Carrasco-Triguero M, Lee MV, Saad OM, Liu L, He J, Su D, Xu K, Vuillemenot BR, Laing ST, Schutten M, Kozak KR, Zheng B, Polson AG, Kamath AV. Preclinical pharmacokinetics and pharmacodynamics of DCLL9718A: An antibody-drug conjugate for the treatment of acute myeloid leukemia. MAbs 2018; 10:1312-1321. [PMID: 30183491 PMCID: PMC6284592 DOI: 10.1080/19420862.2018.1517565] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/27/2018] [Accepted: 08/23/2018] [Indexed: 11/23/2022] Open
Abstract
Few treatment options are available for acute myeloid leukemia (AML) patients. DCLL9718A is an antibody-drug conjugate that targets C-type lectin-like molecule-1 (CLL-1). This receptor is prevalent on monocytes, neutrophils, and AML blast cells, and unlike CD33, is not expressed on hematopoietic stem cells, thus providing possible hematopoietic recovery. DCLL9718A comprises an anti-CLL-1 IgG1 antibody (MCLL0517A) linked to a pyrrolobenzodiazepine (PBD) dimer payload, via a cleavable disulfide-labile linker. Here, we characterize the in vitro and in vivo stability, the pharmacokinetics (PK) and pharmacodynamics (PD) of DCLL9718A and MCLL0517A in rodents and cynomolgus monkeys. Three key PK analytes were measured in these studies: total antibody, antibody-conjugated PBD dimer and unconjugated PBD dimer. In vitro, DCLL9718A, was stable with most (> 80%) of the PBD dimer payload remaining conjugated to the antibody over 96 hours. This was recapitulated in vivo with antibody-conjugated PBD dimer clearance estimates similar to DCLL9718A total antibody clearance. Both DCLL9718A and MCLL0517A showed linear PK in the non-binding rodent species, and non-linear PK in cynomolgus monkeys, a binding species. The PK data indicated minimal impact of conjugation on the disposition of DCLL9718A total antibody. Finally, in cynomolgus monkey, MCLL0517A showed target engagement at all doses tested (0.5 and 20 mg/kg) as measured by receptor occupancy, and DCLL9718A (at doses of 0.05, 0.1 and 0.2 mg/kg) showed strong PD activity as evidenced by notable reduction in monocytes and neutrophils.
Collapse
Affiliation(s)
- Douglas D. Leipold
- Preclinical Translational Pharmacokinetics Department, Genentech Inc., South San Francisco, CA, USA
| | - Isabel Figueroa
- Preclinical Translational Pharmacokinetics Department, Genentech Inc., South San Francisco, CA, USA
| | - Shabkhaiz Masih
- Preclinical Translational Pharmacokinetics Department, Genentech Inc., South San Francisco, CA, USA
| | - Brandon Latifi
- Preclinical Translational Pharmacokinetics Department, Genentech Inc., South San Francisco, CA, USA
| | - Victor Yip
- Preclinical Translational Pharmacokinetics Department, Genentech Inc., South San Francisco, CA, USA
| | - Ben-Quan Shen
- Preclinical Translational Pharmacokinetics Department, Genentech Inc., South San Francisco, CA, USA
| | - Randall C. Dere
- Bioanalytical Sciences Department, Genentech Inc., South San Francisco, CA, USA
| | | | - M. Violet Lee
- Bioanalytical Sciences Department, Genentech Inc., South San Francisco, CA, USA
| | - Ola M. Saad
- Bioanalytical Sciences Department, Genentech Inc., South San Francisco, CA, USA
| | - Luna Liu
- Bioanalytical Sciences Department, Genentech Inc., South San Francisco, CA, USA
| | - Jintang He
- Bioanalytical Sciences Department, Genentech Inc., South San Francisco, CA, USA
| | - Dian Su
- Bioanalytical Sciences Department, Genentech Inc., South San Francisco, CA, USA
| | - Keyang Xu
- Bioanalytical Sciences Department, Genentech Inc., South San Francisco, CA, USA
| | | | - Steven T. Laing
- Safety Assessment Department, Genentech Inc., South San Francisco, CA, USA
| | - Melissa Schutten
- Safety Assessment Department, Genentech Inc., South San Francisco, CA, USA
| | - Katherine R. Kozak
- Biochemical and Cellular Pharmacology Department, Genentech Inc., South San Francisco, CA, USA
| | - Bing Zheng
- Translational Oncology Department, Genentech Inc., South San Francisco, CA, USA
| | - Andrew G. Polson
- Translational Oncology Department, Genentech Inc., South San Francisco, CA, USA
| | - Amrita V. Kamath
- Preclinical Translational Pharmacokinetics Department, Genentech Inc., South San Francisco, CA, USA
| |
Collapse
|
47
|
Morsink LM, Walter RB, Ossenkoppele GJ. Prognostic and therapeutic role of CLEC12A in acute myeloid leukemia. Blood Rev 2018; 34:26-33. [PMID: 30401586 DOI: 10.1016/j.blre.2018.10.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/17/2018] [Accepted: 10/30/2018] [Indexed: 02/07/2023]
Abstract
CLEC12A has recently been identified as an antigen, expressed on leukemic stem cells and leukemic blasts. Given the fact that this expression profile seems stable throughout diagnosis, treatment and relapse on leukemic blasts and leukemic stem cells, CLEC12A can be considered a highly potent and reliable marker for the detection of measurable residual disease and therefore applicable for risk stratification and prognostication in AML. Low CLEC12A expression on leukemic blasts seems to be independently associated with lower likelihood of achieving complete remission after 1 cycle of induction chemotherapy, shorter event free survival, as well as overall survival, indicating potential prognostic properties of CLEC12A expression itself. Lack of expression on the normal hematopoietic stem and progenitor cells, in contrast to CD123 and CD33, might result in less toxicity regarding cytopenias, making CLEC12A an interesting target for innovating immunotherapies, including monoclonal and bispecific antibodies, antibody-drug conjugates and CAR-T cells therapy.
Collapse
Affiliation(s)
- Linde M Morsink
- Department of Hematology, Amsterdam UMC, VU University Medical Center, Amsterdam, the Netherlands.
| | - Roland B Walter
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Medicine, Division of Hematology, University of Washington, Seattle, WA, USA; Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Gert J Ossenkoppele
- Department of Hematology, Amsterdam UMC, VU University Medical Center, Amsterdam, the Netherlands
| |
Collapse
|