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Madsen AV, Pedersen LE, Kristensen P, Goletz S. Design and engineering of bispecific antibodies: insights and practical considerations. Front Bioeng Biotechnol 2024; 12:1352014. [PMID: 38333084 PMCID: PMC10850309 DOI: 10.3389/fbioe.2024.1352014] [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: 12/07/2023] [Accepted: 01/15/2024] [Indexed: 02/10/2024] Open
Abstract
Bispecific antibodies (bsAbs) have attracted significant attention due to their dual binding activity, which permits simultaneous targeting of antigens and synergistic binding effects beyond what can be obtained even with combinations of conventional monospecific antibodies. Despite the tremendous therapeutic potential, the design and construction of bsAbs are often hampered by practical issues arising from the increased structural complexity as compared to conventional monospecific antibodies. The issues are diverse in nature, spanning from decreased biophysical stability from fusion of exogenous antigen-binding domains to antibody chain mispairing leading to formation of antibody-related impurities that are very difficult to remove. The added complexity requires judicious design considerations as well as extensive molecular engineering to ensure formation of high quality bsAbs with the intended mode of action and favorable drug-like qualities. In this review, we highlight and summarize some of the key considerations in design of bsAbs as well as state-of-the-art engineering principles that can be applied in efficient construction of bsAbs with diverse molecular formats.
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Affiliation(s)
- Andreas V. Madsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Lasse E. Pedersen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Peter Kristensen
- Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark
| | - Steffen Goletz
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kongens Lyngby, Denmark
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2
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Segués A, Huang S, Sijts A, Berraondo P, Zaiss DM. Opportunities and challenges of bi-specific antibodies. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2022; 369:45-70. [PMID: 35777864 DOI: 10.1016/bs.ircmb.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The recent clinical approval of different Bi-specific antibodies (BsAbs) has revealed the great therapeutic potential of this novel class of biologicals. For example, the bispecific T-cell engager (BiTE), Blinatumomab, demonstrated the unique capacity of BsAbs to link T-cells with tumor cells, inducing targeted tumor cell removal. Additionally, Amivantamab, recognizing the EGFR and cMet in cis, revealed a substantial improvement of therapeutic efficacy by concomitantly targeting two tumor antigens. Cis-targeting BsAbs furthermore allow discerning cell populations which concurrently express two antigens, for which each antigen expression pattern in itself might not be selective. In this way, BsAbs harbor the great prospect of being more specific and showing fewer side effects than monoclonal antibodies. Nevertheless, BsAbs have also faced major obstacles, for instance, in ensuring reliable assembly and clinical-grade purification. In this review, we summarize the different available antibody platforms currently used for the generation of IgG-like and non-IgG-like BsAbs and explain which approaches have been used to assemble those BsAbs which are currently approved for clinical application. By focusing on the example of regulatory T-cells (Tregs) and the different, ongoing approaches to develop BsAbs specifically targeting Tregs within the tumor microenvironment, our review highlights the huge potential as well as the pitfalls BsAb face in order to emerge as one of the most effective therapeutic biologicals targeting desired cell populations in a highly selective way. Such BsAb may improve treatment efficacy and reduce side effects, thereby opening novel treatment opportunities for a range of different diseases, such as cancer or autoimmune diseases.
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Affiliation(s)
- Aina Segués
- Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom; Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, The Netherlands
| | - Shuyu Huang
- Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom; Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, The Netherlands
| | - Alice Sijts
- Faculty of Veterinary Medicine, Department of Infectious Diseases and Immunology, Utrecht University, Utrecht, The Netherlands
| | - Pedro Berraondo
- Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain; Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain; Navarra Institute for Health Research (IDISNA), Pamplona, Spain
| | - Dietmar M Zaiss
- Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom; Department of Immune Medicine, University Regensburg, Regensburg, Germany; Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg, Germany; Institute of Pathology, University Regensburg, Regensburg, Germany.
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3
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Xu T, Zhang J, Wang T, Wang X. Recombinant antibodies aggregation and overcoming strategies in CHO cells. Appl Microbiol Biotechnol 2022; 106:3913-3922. [PMID: 35608667 DOI: 10.1007/s00253-022-11977-0] [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: 02/01/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 11/27/2022]
Abstract
Mammalian cell lines are frequently used as the preferred host cells for producing recombinant therapeutic proteins (RTPs) having post-translational modified modifications similar to those observed in proteins produced by human cells. Nowadays, most RTPs approved for marketing are produced in Chinese hamster ovary (CHO) cells. Recombinant therapeutic antibodies (RTAs) are among the most important and promising RTPs for biomedical applications. A major limitation associated with the use of RTAs is their aggregation, which can be caused by a variety of factors; this results in a reduction of quality. RTA aggregations are especially concerning as they can trigger human immune responses in humans and may be fatal. Therefore, the mechanisms underlying RTA aggregation and measures for avoiding aggregation are interesting topics in RTAs research. In this review, we discuss recent progress in the field of RTAs aggregation, with a focus on factors that cause aggregation during RTA production and the development of strategies for overcoming RTA aggregation. KEY POINTS: • The recombinant antibody aggregation in mammalian cell systems is reviewed. • Intracellular environment and extracellular parameters influence recombinant antibody aggregation. • Reducing the aggregations can improve the quality of recombinant antibodies.
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Affiliation(s)
- Tingting Xu
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China.,The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, 453002, Henan, China
| | - Jihong Zhang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China.,School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Tianyun Wang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China. .,School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China.
| | - Xiaoyin Wang
- International Joint Research Laboratory for Recombinant Pharmaceutical Protein Expression System of Henan, Xinxiang Medical University, Xinxiang, 453003, Henan, China. .,School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, 453003, Henan, China.
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4
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Zhao C, Zhang W, Gong G, Xie L, Wang MW, Hu Y. A new approach to produce IgG 4-like bispecific antibodies. Sci Rep 2021; 11:18630. [PMID: 34545109 PMCID: PMC8452627 DOI: 10.1038/s41598-021-97393-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 07/05/2021] [Indexed: 11/12/2022] Open
Abstract
While achieving rapid developments in recent years, bispecific antibodies are still difficult to design and manufacture, due to mispair of both heavy and light chains. Here we report a novel technology to make bispecific molecules. The knob-into-hole method was used to pair two distinct heavy chains as a heterodimer. IgG4 S228P CH1-CL interface was then partially replaced by T-cell receptor α/β constant domain to increase the efficiency of cognate heavy and light chain pairing. Following expression and purification, the bispecific antibody interface exchange was confirmed by Western blotting and LC–MS/MS. To ensure its validity, we combined a monovalent bispecific antibody against PD-1 (sequence from Pembrolizumab) and LAG3 (sequence from Relatlimab). The results showed that the molecule could be assembled correctly at a ratio of 95% in cells. In vitro functional assay demonstrated that the purified bispecific antibody exhibits an enhanced agonist activity compared to that of the parental antibodies. Low immunogenicity was predicted by an open-access software and ADA test.
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Affiliation(s)
- Caizhi Zhao
- School of Pharmacy, Fudan University, Shanghai, 201203, China.,China State Institute of Pharmaceutical Industry, Shanghai, 201203, China
| | - Wei Zhang
- China State Institute of Pharmaceutical Industry, Shanghai, 201203, China
| | - Guihua Gong
- China State Institute of Pharmaceutical Industry, Shanghai, 201203, China
| | - Liping Xie
- China State Institute of Pharmaceutical Industry, Shanghai, 201203, China
| | - Ming-Wei Wang
- School of Pharmacy, Fudan University, Shanghai, 201203, China. .,The National Center for Drug Screening, Shanghai, 201203, China.
| | - Youjia Hu
- China State Institute of Pharmaceutical Industry, Shanghai, 201203, China.
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Ghani S, Deravi N, Pirzadeh M, Rafiee B, Gatabi ZR, Bandehpour M, Yarian F. Antibody fragment and targeted colorectal cancer therapy: A global systematic review. Curr Pharm Biotechnol 2021; 23:1061-1071. [PMID: 34375187 DOI: 10.2174/1389201022666210810104226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 06/19/2021] [Accepted: 06/29/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND AIMS Antibody-based therapeutics have been evidenced promising for the treatment of colorectal cancer patients. However, the size and long circulating half-lives of antibodies can limit their reproducible manufacture in clinical studies. Consequently, in novel therapeutic approaches conventional antibodies are minimized and engineered to produce fragments like Fab, scFv, nanobody, bifunctional antibody, bispecific antibody, minibody and diabody to preserve their high affinity and specificity to target pharmaceutical nanoparticle conjugates. This systematic review for the first time aimed to elucidate the role of various antibody fragments in colorectal cancer treatment. METHOD A systematic literature search in web of sciences, PubMed, Scopus, Google scholar and ProQuest was conducted. Reference lists of the articles were reviewed to identify the relevant papers. The full text search included articles published in English during 1990-2021. RESULTS Most the 53 included studies were conducted in vitro and in most conducted studies single-chain antibodies were among the most used antibody fragments. Most antibodies targeted CEA in the treatment of colorectal cancer. Moreover, a large number of studies observed apoptosis induction and tumor growth inhibition. In addition, few studies implicated the role of the innate immune system as an indirect mechanisms of tumor growth by enhancing NK-cell killing. CONCLUSION Antibody-based therapy was demonstrated to be of a great promise in the treatment of colorectal cancer rather than common treatments such as radiotherapy, chemotherapy, and surgical operations. This type of specified cancer treatment can also induce the activation of innate and specific immune system to eradicate tumor cells.
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Affiliation(s)
- Sepideh Ghani
- Student Research Committee, Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Niloofar Deravi
- Student Research Committee, School of medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Marzieh Pirzadeh
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran
| | - Behnam Rafiee
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
| | - Zahra Rezanejad Gatabi
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mojgan Bandehpour
- Cellular & Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Yarian
- SBUMS, Arabi Ave, Daneshjoo Blvd, Velenjak, Tehran, Iran
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Bioassay Development for Bispecific Antibodies-Challenges and Opportunities. Int J Mol Sci 2021; 22:ijms22105350. [PMID: 34069573 PMCID: PMC8160952 DOI: 10.3390/ijms22105350] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/14/2021] [Accepted: 05/15/2021] [Indexed: 12/25/2022] Open
Abstract
Antibody therapeutics are expanding with promising clinical outcomes, and diverse formats of antibodies are further developed and available for patients of the most challenging disease areas. Bispecific antibodies (BsAbs) have several significant advantages over monospecific antibodies by engaging two antigen targets. Due to the complicated mechanism of action, diverse structural variations, and dual-target binding, developing bioassays and other types of assays to characterize BsAbs is challenging. Developing bioassays for BsAbs requires a good understanding of the mechanism of action of the molecule, principles and applications of different bioanalytical methods, and phase-appropriate considerations per regulatory guidelines. Here, we review recent advances and case studies to provide strategies and insights for bioassay development for different types of bispecific molecules.
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Bogen JP, Carrara SC, Fiebig D, Grzeschik J, Hock B, Kolmar H. Design of a Trispecific Checkpoint Inhibitor and Natural Killer Cell Engager Based on a 2 + 1 Common Light Chain Antibody Architecture. Front Immunol 2021; 12:669496. [PMID: 34040611 PMCID: PMC8141644 DOI: 10.3389/fimmu.2021.669496] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/21/2021] [Indexed: 12/18/2022] Open
Abstract
Natural killer cell engagers gained enormous interest in recent years due to their potent anti-tumor activity and favorable safety profile. Simultaneously, chicken-derived antibodies entered clinical studies paving the way for avian-derived therapeutics. In this study, we describe the affinity maturation of a common light chain (cLC)-based, chicken-derived antibody targeting EGFR, followed by utilization of the same light chain for the isolation of CD16a- and PD-L1-specific monoclonal antibodies. The resulting binders target their respective antigen with single-digit nanomolar affinity while blocking the ligand binding of all three respective receptors. Following library-based humanization, bispecific and trispecific variants in a standard 1 + 1 or a 2 + 1 common light chain format were generated, simultaneously targeting EGFR, CD16a, and PD-L1. The trispecific antibody mediated an elevated antibody-dependent cellular cytotoxicity (ADCC) in comparison to the EGFR×CD16a bispecific variant by effectively bridging EGFR/PD-L1 double-positive cancer cells with CD16a-positive effector cells. These findings represent, to our knowledge, the first detailed report on the generation of a trispecific 2 + 1 antibodies exhibiting a common light chain and illustrate synergistic effects of trispecific antigen binding. Overall, this generic procedure paves the way for the engineering of tri- and oligospecific therapeutic antibodies derived from avian immunizations.
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MESH Headings
- Animals
- Antibodies, Bispecific/immunology
- Antibodies, Bispecific/pharmacology
- Antibodies, Monoclonal, Humanized/immunology
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibody Specificity
- B7-H1 Antigen/antagonists & inhibitors
- B7-H1 Antigen/immunology
- B7-H1 Antigen/metabolism
- Cell Line, Tumor
- Chickens
- Cytotoxicity, Immunologic/drug effects
- Drug Design
- Epitopes
- ErbB Receptors/antagonists & inhibitors
- ErbB Receptors/immunology
- ErbB Receptors/metabolism
- Immune Checkpoint Inhibitors/immunology
- Immune Checkpoint Inhibitors/pharmacology
- Immunization
- Immunoglobulin Light Chains/immunology
- Immunoglobulin Light Chains/pharmacology
- Killer Cells, Natural/drug effects
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Receptors, IgG/antagonists & inhibitors
- Receptors, IgG/immunology
- Receptors, IgG/metabolism
- Skin Neoplasms/drug therapy
- Skin Neoplasms/immunology
- Skin Neoplasms/metabolism
- Skin Neoplasms/pathology
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Affiliation(s)
- Jan P. Bogen
- Institute for Organic Chemistry and Biochemistry, Technical University of Darmstadt, Darmstadt, Germany
- Ferring Darmstadt Laboratory, Biologics Technology and Development, Darmstadt, Germany
| | - Stefania C. Carrara
- Institute for Organic Chemistry and Biochemistry, Technical University of Darmstadt, Darmstadt, Germany
- Ferring Darmstadt Laboratory, Biologics Technology and Development, Darmstadt, Germany
| | - David Fiebig
- Institute for Organic Chemistry and Biochemistry, Technical University of Darmstadt, Darmstadt, Germany
- Ferring Darmstadt Laboratory, Biologics Technology and Development, Darmstadt, Germany
| | - Julius Grzeschik
- Ferring Darmstadt Laboratory, Biologics Technology and Development, Darmstadt, Germany
| | - Björn Hock
- Global Pharmaceutical Research and Development, Ferring International Center S.A., Saint-Prex, Switzerland
| | - Harald Kolmar
- Institute for Organic Chemistry and Biochemistry, Technical University of Darmstadt, Darmstadt, Germany
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Bleach R, Sherlock M, O'Reilly MW, McIlroy M. Growth Hormone/Insulin Growth Factor Axis in Sex Steroid Associated Disorders and Related Cancers. Front Cell Dev Biol 2021; 9:630503. [PMID: 33816477 PMCID: PMC8012538 DOI: 10.3389/fcell.2021.630503] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/11/2021] [Indexed: 12/13/2022] Open
Abstract
To date, almost all solid malignancies have implicated insulin-like growth factor (IGF) signalling as a driver of tumour growth. However, the remarkable level of crosstalk between sex hormones, the IGF-1 receptor (IGF-1R) and its ligands IGF-1 and 2 in endocrine driven cancers is incompletely understood. Similar to the sex steroids, IGF signalling is essential in normal development as well as growth and tissue homoeostasis, and undergoes a steady decline with advancing age and increasing visceral adiposity. Interestingly, IGF-1 has been found to play a compensatory role for both estrogen receptor (ER) and androgen receptor (AR) by augmenting hormonal responses in the absence of, or where low levels of ligand are present. Furthermore, experimental, and epidemiological evidence supports a role for dysregulated IGF signalling in breast and prostate cancers. Insulin-like growth factor binding protein (IGFBP) molecules can regulate the bioavailability of IGF-1 and are frequently expressed in these hormonally regulated tissues. The link between age-related disease and the role of IGF-1 in the process of ageing and longevity has gained much attention over the last few decades, spurring the development of numerous IGF targeted therapies that have, to date, failed to deliver on their therapeutic potential. This review will provide an overview of the sexually dimorphic nature of IGF signalling in humans and how this is impacted by the reduction in sex steroids in mid-life. It will also explore the latest links with metabolic syndromes, hormonal imbalances associated with ageing and targeting of IGF signalling in endocrine-related tumour growth with an emphasis on post-menopausal breast cancer and the impact of the steroidal milieu.
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Affiliation(s)
- Rachel Bleach
- Endocrine Oncology Research Group, Department of Surgery, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Mark Sherlock
- Academic Department of Endocrinology, Beaumont Hospital and RCSI Medical School, Dublin, Ireland
| | - Michael W O'Reilly
- Academic Department of Endocrinology, Beaumont Hospital and RCSI Medical School, Dublin, Ireland
| | - Marie McIlroy
- Endocrine Oncology Research Group, Department of Surgery, RCSI University of Medicine and Health Sciences, Dublin, Ireland
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Abstract
Bispecific antibodies (bsAbs) target two different epitopes. These are an up-and-coming class of biologics, with two such therapeutics (emicizumab and blinatumomab) FDA approved and on the market, and many more in clinical trials. While the first reported bsAbs were constructed by chemical methods, this approach has fallen out of favour with the advent of modern genetic engineering techniques and, nowadays, the vast majority of bsAbs are produced by protein engineering. However, in recent years, relying on innovations in the fields of bioconjugation and bioorthogonal click chemistry, new chemical methods have appeared that have the potential to be competitive with protein engineering techniques and, indeed, hold some advantages. These approaches offer modularity, reproducibility and batch-to-batch consistency, as well as the integration of handles, whereby additional cargo molecules can be attached easily, e.g. to generate bispecific antibody-drug conjugates. The linker between the antibodies/antibody fragments can also be easily varied, and new formats (types, defined by structural properties or by construction methodology) can be generated rapidly. These attributes offer the potential to revolutionize the field. Here, we review chemical methods for the generation of bsAbs, showing that the newest examples of these techniques are worthy competitors to the industry-standard expression-based strategies.
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10
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Bastian K, Scott E, Elliott DJ, Munkley J. FUT8 Alpha-(1,6)-Fucosyltransferase in Cancer. Int J Mol Sci 2021; 22:E455. [PMID: 33466384 PMCID: PMC7795606 DOI: 10.3390/ijms22010455] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/21/2020] [Accepted: 12/24/2020] [Indexed: 12/15/2022] Open
Abstract
Aberrant glycosylation is a universal feature of cancer cells that can impact all steps in tumour progression from malignant transformation to metastasis and immune evasion. One key change in tumour glycosylation is altered core fucosylation. Core fucosylation is driven by fucosyltransferase 8 (FUT8), which catalyses the addition of α1,6-fucose to the innermost GlcNAc residue of N-glycans. FUT8 is frequently upregulated in cancer, and plays a critical role in immune evasion, antibody-dependent cellular cytotoxicity (ADCC), and the regulation of TGF-β, EGF, α3β1 integrin and E-Cadherin. Here, we summarise the role of FUT8 in various cancers (including lung, liver, colorectal, ovarian, prostate, breast, melanoma, thyroid, and pancreatic), discuss the potential mechanisms involved, and outline opportunities to exploit FUT8 as a critical factor in cancer therapeutics in the future.
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Affiliation(s)
- Kayla Bastian
- Institute of Biosciences, Newcastle University, Newcastle Upon Tyne NE1 3BZ, UK; (E.S.); (D.J.E.); (J.M.)
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11
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Surowka M, Schaefer W, Klein C. Ten years in the making: application of CrossMab technology for the development of therapeutic bispecific antibodies and antibody fusion proteins. MAbs 2021; 13:1967714. [PMID: 34491877 PMCID: PMC8425689 DOI: 10.1080/19420862.2021.1967714] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/03/2021] [Accepted: 08/10/2021] [Indexed: 12/15/2022] Open
Abstract
Bispecific antibodies have recently attracted intense interest. CrossMab technology was described in 2011 as novel approach enabling correct antibody light-chain association with their respective heavy chain in bispecific antibodies, together with methods enabling correct heavy-chain association using existing pairs of antibodies. Since the original description, CrossMab technology has evolved in the past decade into one of the most mature, versatile, and broadly applied technologies in the field, and nearly 20 bispecific antibodies based on CrossMab technology developed by Roche and others have entered clinical trials. The most advanced of these are the Ang-2/VEGF bispecific antibody faricimab, currently undergoing regulatory review, and the CD20/CD3 T cell bispecific antibody glofitamab, currently in pivotal Phase 3 trials. In this review, we introduce the principles of CrossMab technology, including its application for the generation of bi-/multispecific antibodies with different geometries and mechanisms of action, and provide an overview of CrossMab-based therapeutics in clinical trials.
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12
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Bispecific Antibodies and Antibody-Drug Conjugates for Cancer Therapy: Technological Considerations. Biomolecules 2020; 10:biom10030360. [PMID: 32111076 PMCID: PMC7175114 DOI: 10.3390/biom10030360] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/20/2020] [Accepted: 02/23/2020] [Indexed: 01/07/2023] Open
Abstract
The ability of monoclonal antibodies to specifically bind a target antigen and neutralize or stimulate its activity is the basis for the rapid growth and development of the therapeutic antibody field. In recent years, traditional immunoglobulin antibodies have been further engineered for better efficacy and safety, and technological developments in the field enabled the design and production of engineered antibodies capable of mediating therapeutic functions hitherto unattainable by conventional antibody formats. Representative of this newer generation of therapeutic antibody formats are bispecific antibodies and antibody–drug conjugates, each with several approved drugs and dozens more in the clinical development phase. In this review, the technological principles and challenges of bispecific antibodies and antibody–drug conjugates are discussed, with emphasis on clinically validated formats but also including recent developments in the fields, many of which are expected to significantly augment the current therapeutic arsenal against cancer and other diseases with unmet medical needs.
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13
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Nie S, Wang Z, Moscoso-Castro M, D'Souza P, Lei C, Xu J, Gu J. Biology drives the discovery of bispecific antibodies as innovative therapeutics. Antib Ther 2020; 3:18-62. [PMID: 33928225 PMCID: PMC7990219 DOI: 10.1093/abt/tbaa003] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/06/2020] [Indexed: 12/17/2022] Open
Abstract
A bispecific antibody (bsAb) is able to bind two different targets or two distinct epitopes on the same target. Broadly speaking, bsAbs can include any single molecule entity containing dual specificities with at least one being antigen-binding antibody domain. Besides additive effect or synergistic effect, the most fascinating applications of bsAbs are to enable novel and often therapeutically important concepts otherwise impossible by using monoclonal antibodies alone or their combination. This so-called obligate bsAbs could open up completely new avenue for developing novel therapeutics. With evolving understanding of structural architecture of various natural or engineered antigen-binding immunoglobulin domains and the connection of different domains of an immunoglobulin molecule, and with greatly improved understanding of molecular mechanisms of many biological processes, the landscape of therapeutic bsAbs has significantly changed in recent years. As of September 2019, over 110 bsAbs are under active clinical development, and near 180 in preclinical development. In this review article, we introduce a system that classifies bsAb formats into 30 categories based on their antigen-binding domains and the presence or absence of Fc domain. We further review the biology applications of approximately 290 bsAbs currently in preclinical and clinical development, with the attempt to illustrate the principle of selecting a bispecific format to meet biology needs and selecting a bispecific molecule as a clinical development candidate by 6 critical criteria. Given the novel mechanisms of many bsAbs, the potential unknown safety risk and risk/benefit should be evaluated carefully during preclinical and clinical development stages. Nevertheless we are optimistic that next decade will witness clinical success of bsAbs or multispecific antibodies employing some novel mechanisms of action and deliver the promise as next wave of antibody-based therapeutics.
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Affiliation(s)
- Siwei Nie
- WuXi Biologics, 299 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China and ,To whom correspondence should addressed. Jijie Guor Siwei Nie. or
| | - Zhuozhi Wang
- WuXi Biologics, 299 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China and
| | | | - Paul D'Souza
- Clarivate Analytics, Friars House, 160 Blackfriars Road, London SE1 8EZ, UK
| | - Can Lei
- Clarivate Analytics, Friars House, 160 Blackfriars Road, London SE1 8EZ, UK
| | - Jianqing Xu
- WuXi Biologics, 299 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China and
| | - Jijie Gu
- WuXi Biologics, 299 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China and ,To whom correspondence should addressed. Jijie Guor Siwei Nie. or
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Sustmann C, Dickopf S, Regula JT, Kettenberger H, Mølhøj M, Gassner C, Weininger D, Fenn S, Manigold T, Kling L, Künkele KP, Schwaiger M, Bossenmaier B, Griese JJ, Hopfner KP, Graff-Meyer A, Stahlberg H, Ringler P, Lauer ME, Brinkmann U, Schaefer W, Klein C. DuoMab: a novel CrossMab-based IgG-derived antibody format for enhanced antibody-dependent cell-mediated cytotoxicity. MAbs 2019; 11:1402-1414. [PMID: 31526159 PMCID: PMC6816436 DOI: 10.1080/19420862.2019.1661736] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 08/08/2019] [Accepted: 08/26/2019] [Indexed: 01/16/2023] Open
Abstract
High specificity accompanied with the ability to recruit immune cells has made recombinant therapeutic antibodies an integral part of drug development. Here we present a generic approach to generate two novel IgG-derived antibody formats that are based on a modification of the CrossMab technology. MoAbs harbor two heavy chains (HCs) resulting in one binding entity and one fragment crystallizable region (Fc), whereas DuoMabs are composed of four HCs harboring two binding entities and two Fc regions linked at a disulfide-bridged hinge. The latter bivalent format is characterized by avidity-enhanced target cell binding while simultaneously increasing the 'Fc-load' on the surface. DuoMabs were shown to be producible in high yield and purity and bind to surface cells with affinities comparable to IgGs. The increased Fc load directed at the surface of target cells by DuoMabs modulates their antibody-dependent cell-mediated cytotoxicity competency toward target cells, making them attractive for applications that require or are modulated by FcR interactions.
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Affiliation(s)
- Claudio Sustmann
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Steffen Dickopf
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Jörg T. Regula
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Hubert Kettenberger
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Michael Mølhøj
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Christian Gassner
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Diana Weininger
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Sebastian Fenn
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Tobias Manigold
- Roche Pharma Research and Early Development (pRED), Discovery Oncology, Roche Innovation Center Basel, Basel, Switzerland
| | - Lothar Kling
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Klaus-Peter Künkele
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Manfred Schwaiger
- Roche Pharma Research and Early Development (pRED), Discovery Oncology, Roche Innovation Center Basel, Basel, Switzerland
| | - Birgit Bossenmaier
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Julia J. Griese
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-University, Munich, Germany
| | - Karl-Peter Hopfner
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-University, Munich, Germany
| | - Alexandra Graff-Meyer
- Center for Cellular Imaging and Nanoanalytics, Biozentrum, University of Basel, Basel, Switzerland
| | - Henning Stahlberg
- Center for Cellular Imaging and Nanoanalytics, Biozentrum, University of Basel, Basel, Switzerland
| | - Philippe Ringler
- Center for Cellular Imaging and Nanoanalytics, Biozentrum, University of Basel, Basel, Switzerland
| | - Matthias E. Lauer
- Roche Pharma Research and Early Development (pRED), Small Molecule Research, Roche Innovation Center Basel, Basel, Switzerland
| | - Ulrich Brinkmann
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Wolfgang Schaefer
- Roche Pharma Research and Early Development (pRED), Large Molecule Research (LMR), Roche Innovation Center Munich, Penzberg, Germany
| | - Christian Klein
- Roche Pharma Research and Early Development (pRED), Discovery Oncology, Roche Innovation Center Zurich, Schlieren, Switzerland
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15
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King HAD, Gonelli CA, Tullett KM, Lahoud MH, Purcell DFJ, Drummer HE, Poumbourios P, Center RJ. Conjugation of an scFab domain to the oligomeric HIV envelope protein for use in immune targeting. PLoS One 2019; 14:e0220986. [PMID: 31430333 PMCID: PMC6701830 DOI: 10.1371/journal.pone.0220986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/28/2019] [Indexed: 11/19/2022] Open
Abstract
A promising strategy for the enhancement of vaccine-mediated immune responses is by directly targeting protein antigens to immune cells. Targeting of antigens to the dendritic cell (DC) molecule Clec9A has been shown to enhance antibody affinity and titers for model antigens, and influenza and enterovirus antigens, and may be advantageous for immunogens that otherwise fail to elicit antibodies with sufficient titers and breadth for broad protection, such as the envelope protein (Env) of HIV. Previously employed targeting strategies often utilize receptor-specific antibodies, however it is impractical to conjugate a bivalent IgG antibody to oligomeric antigens, including HIV Env trimers. Here we designed single chain variable fragment (scFv) and single chain Fab (scFab) constructs of a Clec9A-targeting antibody, expressed as genetically fused conjugates with the soluble ectodomain of Env, gp140. This conjugation did not affect the presentation of Env neutralising antibody epitopes. The scFab moiety was shown to be more stable than scFv, and in the context of gp140 fusions, was able to mediate better binding to recombinant and cell surface-expressed Clec9A, although the level of binding to cell-surface Clec9A was lower than that of the anti-Clec9A IgG. However, binding to Clec9A on the surface of DCs was not detected. Mouse immunization experiments suggested that the Clec9A-binding activity of the scFab-gp140 conjugate was insufficient to enhance Env-specific antibody responses. This is an important first proof of principle study demonstrating the conjugation of a scFab to an oligomeric protein antigen, and that an scFab displays better antigen binding than the corresponding scFv. Future developments of this technique that increase the scFab affinity will provide a valuable means to target oligomeric proteins to cell surface antigens of interest, improving vaccine-generated immune responses.
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MESH Headings
- AIDS Vaccines/administration & dosage
- AIDS Vaccines/genetics
- AIDS Vaccines/immunology
- Animals
- Antibodies, Neutralizing/immunology
- Antibody Affinity
- Antigens, Viral/genetics
- Antigens, Viral/immunology
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Epitopes/immunology
- Female
- HEK293 Cells
- HIV Antibodies/immunology
- HIV Infections/immunology
- HIV Infections/therapy
- HIV Infections/virology
- Humans
- Immunogenicity, Vaccine
- Lectins, C-Type/immunology
- Lectins, C-Type/metabolism
- Mice
- Proof of Concept Study
- Protein Domains/genetics
- Protein Domains/immunology
- Receptors, Mitogen/immunology
- Receptors, Mitogen/metabolism
- Recombinant Fusion Proteins/administration & dosage
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/immunology
- Single-Chain Antibodies/administration & dosage
- Single-Chain Antibodies/genetics
- Single-Chain Antibodies/immunology
- Vaccination/methods
- Vaccines, DNA/administration & dosage
- Vaccines, DNA/genetics
- Vaccines, DNA/immunology
- env Gene Products, Human Immunodeficiency Virus/administration & dosage
- env Gene Products, Human Immunodeficiency Virus/genetics
- env Gene Products, Human Immunodeficiency Virus/immunology
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Affiliation(s)
- Hannah A. D. King
- Disease Elimination, Burnet Institute, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Christopher A. Gonelli
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Kirsteen M. Tullett
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Victoria, Australia
| | - Mireille H. Lahoud
- Disease Elimination, Burnet Institute, Melbourne, Victoria, Australia
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Melbourne, Victoria, Australia
| | - Damian F. J. Purcell
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - Heidi E. Drummer
- Disease Elimination, Burnet Institute, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
- Department of Microbiology, Monash University, Melbourne, Victoria, Australia
| | - Pantelis Poumbourios
- Disease Elimination, Burnet Institute, Melbourne, Victoria, Australia
- Department of Microbiology, Monash University, Melbourne, Victoria, Australia
| | - Rob J. Center
- Disease Elimination, Burnet Institute, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
- * E-mail:
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16
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Vartanian S, Lee J, Klijn C, Gnad F, Bagniewska M, Schaefer G, Zhang D, Tan J, Watson SA, Liu L, Chen H, Liang Y, Watanabe C, Cuellar T, Kan D, Hartmaier RJ, Lau T, Costa MR, Martin SE, Merchant M, Haley B, Stokoe D. ERBB3 and IGF1R Signaling Are Required for Nrf2-Dependent Growth in KEAP1-Mutant Lung Cancer. Cancer Res 2019; 79:4828-4839. [PMID: 31416841 DOI: 10.1158/0008-5472.can-18-2086] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 11/07/2018] [Accepted: 08/06/2019] [Indexed: 11/16/2022]
Abstract
Mutations in KEAP1 and NFE2L2 (encoding the protein Nrf2) are prevalent in both adeno and squamous subtypes of non-small cell lung cancer, as well as additional tumor indications. The consequence of these mutations is stabilized Nrf2 and chronic induction of a battery of Nrf2 target genes. We show that knockdown of Nrf2 caused modest growth inhibition of cells growing in two-dimension, which was more pronounced in cell lines expressing mutant KEAP1. In contrast, Nrf2 knockdown caused almost complete regression of established KEAP1-mutant tumors in mice, with little effect on wild-type (WT) KEAP1 tumors. The strong dependency on Nrf2 could be recapitulated in certain anchorage-independent growth environments and was not prevented by excess extracellular glutathione. A CRISPR screen was used to investigate the mechanism(s) underlying this dependence. We identified alternative pathways critical for Nrf2-dependent growth in KEAP1-mutant cell lines, including the redox proteins thioredoxin and peroxiredoxin, as well as the growth factor receptors IGF1R and ERBB3. IGF1R inhibition was effective in KEAP1-mutant cells compared with WT, especially under conditions of anchorage-independent growth. These results point to addiction of KEAP1-mutant tumor cells to Nrf2 and suggest that inhibition of Nrf2 or discrete druggable Nrf2 target genes such as IGF1R could be an effective therapeutic strategy for disabling these tumors. SIGNIFICANCE: This study identifies pathways activated by Nrf2 that are important for the proliferation and tumorigenicity of KEAP1-mutant non-small cell lung cancer.
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Affiliation(s)
| | | | | | - Florian Gnad
- Department of Bioinformatics and Computational Biology
| | | | | | - Donglu Zhang
- Department of Drug Metabolism and Pharmacokinetics
| | | | | | - Liling Liu
- Department of Drug Metabolism and Pharmacokinetics
| | - Honglin Chen
- Department of Molecular Biology, Genentech Inc., South San Francisco, California
| | - Yuxin Liang
- Department of Molecular Biology, Genentech Inc., South San Francisco, California
| | | | - Trinna Cuellar
- Department of Molecular Biology, Genentech Inc., South San Francisco, California
| | | | | | - Ted Lau
- Department of Discovery Oncology
| | | | | | | | - Benjamin Haley
- Department of Molecular Biology, Genentech Inc., South San Francisco, California
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17
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Pereira NA, Chan KF, Lin PC, Song Z. The "less-is-more" in therapeutic antibodies: Afucosylated anti-cancer antibodies with enhanced antibody-dependent cellular cytotoxicity. MAbs 2019; 10:693-711. [PMID: 29733746 PMCID: PMC6150623 DOI: 10.1080/19420862.2018.1466767] [Citation(s) in RCA: 192] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Therapeutic monoclonal antibodies are the fastest growing class of biological therapeutics for the treatment of various cancers and inflammatory disorders. In cancer immunotherapy, some IgG1 antibodies rely on the Fc-mediated immune effector function, antibody-dependent cellular cytotoxicity (ADCC), as the major mode of action to deplete tumor cells. It is well-known that this effector function is modulated by the N-linked glycosylation in the Fc region of the antibody. In particular, absence of core fucose on the Fc N-glycan has been shown to increase IgG1 Fc binding affinity to the FcγRIIIa present on immune effector cells such as natural killer cells and lead to enhanced ADCC activity. As such, various strategies have focused on producing afucosylated antibodies to improve therapeutic efficacy. This review discusses the relevance of antibody core fucosylation to ADCC, different strategies to produce afucosylated antibodies, and an update of afucosylated antibody drugs currently undergoing clinical trials as well as those that have been approved.
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Affiliation(s)
- Natasha A Pereira
- a Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR) , 20 Biopolis Way, Singapore
| | - Kah Fai Chan
- a Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR) , 20 Biopolis Way, Singapore
| | - Pao Chun Lin
- a Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR) , 20 Biopolis Way, Singapore
| | - Zhiwei Song
- a Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR) , 20 Biopolis Way, Singapore
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18
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Li Y. A brief introduction of IgG-like bispecific antibody purification: Methods for removing product-related impurities. Protein Expr Purif 2019; 155:112-119. [DOI: 10.1016/j.pep.2018.11.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 11/30/2018] [Indexed: 01/04/2023]
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19
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Klein C, Schaefer W, Regula JT, Dumontet C, Brinkmann U, Bacac M, Umaña P. Engineering therapeutic bispecific antibodies using CrossMab technology. Methods 2018; 154:21-31. [PMID: 30453028 DOI: 10.1016/j.ymeth.2018.11.008] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/13/2018] [Accepted: 11/14/2018] [Indexed: 12/19/2022] Open
Abstract
Bispecific antibodies have recently gained major interest as they allow novel mechanisms-of-action and/or therapeutic applications that cannot be achieved using conventional IgG-based antibodies. A major issue in engineering IgG-based bispecific antibodies has been to enable the correct association of heavy and light chains resulting in correct assembly of the desired bispecific antibody in sufficient yield. Various approaches have been described during recent years to tackle this challenge. We have developed the so-called CrossMab technology that enforces correct light chain association based on the domain crossover of immunoglobulin domains in the Fab region of the bispecific antibody. This versatile technology allows the generation of different bispecific antibody formats including asymmetric heterodimeric monovalent 1 + 1 bispecific antibodies and asymmetric heterodimeric bispecific antibodies with 2 + 1 valency in combination with approaches enabling Fc-hetermodimerization like knob-into-hole technology as well as the generation of tetravalent symmetric bispecific antibodies with 2 + 2 valency, also known as Tandem-Fab based IgG antibodies, using processes suitable for the large scale production of therapeutic bispecific antibodies. Notably, as of now, at least eight different bispecific antibodies using CrossMab technology entered clinical development, and additional CrossMabs are in late preclinical development. This review provides a summary of the status and progress with the engineering and generation of CrossMab technology based bispecific antibodies as well as their therapeutic application.
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Affiliation(s)
- Christian Klein
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, 8952 Schlieren, Switzerland.
| | - Wolfgang Schaefer
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, 82393 Penzberg, Germany
| | - Joerg T Regula
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, 82393 Penzberg, Germany
| | - Charles Dumontet
- Cancer Research Center of Lyon (CRCL), INSERM, 1052/CNRS, 69000 Lyon, France
| | - Ulrich Brinkmann
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Munich, 82393 Penzberg, Germany
| | - Marina Bacac
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, 8952 Schlieren, Switzerland
| | - Pablo Umaña
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, 8952 Schlieren, Switzerland
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20
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Abstract
Bispecific antibodies have moved from being an academic curiosity with therapeutic promise to reality, with two molecules being currently commercialized (Hemlibra® and Blincyto®) and many more in clinical trials. The success of bispecific antibodies is mainly due to the continuously growing number of mechanisms of actions (MOA) they enable that are not accessible to monoclonal antibodies. One of the earliest MOA of bispecific antibodies and currently the one with the largest number of clinical trials is the redirecting of the cytotoxic activity of T-cells for oncology applications, now extending its use in infective diseases. The use of bispecific antibodies for crossing the blood-brain barrier is another important application because of its potential to advance the therapeutic options for neurological diseases. Another noteworthy application due to its growing trend is enabling a more tissue-specific delivery or activity of antibodies. The different molecular solutions to the initial hurdles that limited the development of bispecific antibodies have led to the current diverse set of bispecific or multispecific antibody formats that can be grouped into three main categories: IgG-like formats, antibody fragment-based formats, or appended IgG formats. The expanded applications of bispecific antibodies come at the price of additional challenges for clinical development. The rising complexity in their structure may increase the risk of immunogenicity and the multiple antigen specificity complicates the selection of relevant species for safety assessment.
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Affiliation(s)
- Bushra Husain
- Protein Chemistry Department, Genentech Inc., South San Francisco, CA, 94080, USA
| | - Diego Ellerman
- Protein Chemistry Department, Genentech Inc., South San Francisco, CA, 94080, USA.
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21
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2013-2014. MASS SPECTROMETRY REVIEWS 2018; 37:353-491. [PMID: 29687922 DOI: 10.1002/mas.21530] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/29/2016] [Indexed: 06/08/2023]
Abstract
This review is the eighth update of the original article published in 1999 on the application of Matrix-assisted laser desorption/ionization mass spectrometry (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2014. Topics covered in the first part of the review include general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, and arrays. The second part of the review is devoted to applications to various structural types such as oligo- and poly- saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. The third part of the review covers medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2018 Wiley Periodicals, Inc. Mass Spec Rev 37:353-491, 2018.
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Affiliation(s)
- David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
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22
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Verdino P, Atwell S, Demarest SJ. Emerging trends in bispecific antibody and scaffold protein therapeutics. Curr Opin Chem Eng 2018. [DOI: 10.1016/j.coche.2018.01.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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23
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Christopoulos PF, Corthay A, Koutsilieris M. Aiming for the Insulin-like Growth Factor-1 system in breast cancer therapeutics. Cancer Treat Rev 2017; 63:79-95. [PMID: 29253837 DOI: 10.1016/j.ctrv.2017.11.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 11/29/2017] [Accepted: 11/30/2017] [Indexed: 12/23/2022]
Abstract
Despite the major discoveries occurred in oncology the recent years, breast malignancies remain one of the most common causes of cancer-related deaths for women in developed countries. Development of HER2-targeting drugs has been considered a breakthrough in anti-cancer approaches and alluded to the potential of targeting growth factors in breast cancer (BrCa) therapeutics. More than twenty-five years have passed since the Insulin-like Growth Factor-1 (IGF-1) system was initially recognized as a potential target candidate in BrCa therapy. To date, a growing body of studies have implicated the IGF-1 signaling with the BrCa biology. Despite the promising experimental evidence, the impression from clinical trials is rather disappointing. Several reasons may account for this and the last word regarding the efficacy of this system as a target candidate in BrCa therapeutics is probably not written yet. Herein, we provide the theoretical basis, as well as, a comprehensive overview of the current literature, regarding the different strategies targeting the various components of the IGF-1/IGF-1R axis in several pathophysiological aspects of BrCa, including the tumor micro-environment and cancer stemness. In addition, we review the rationale for targeting the IGF-1 system in the different BrCa molecular subtypes and in treatment resistant breast tumors with a focus on both the molecular mechanisms and on the clinical perspectives of such approaches in specific population subgroups. We also discuss the future challenges, as well as, the development of novel molecules and strategies targeting the system and suggest potential improvements in the field.
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Affiliation(s)
- Panagiotis F Christopoulos
- Department of Experimental Physiology, Medical School, National & Kapodistrian University of Athens, Athens, Greece; Tumor Immunology Lab, Department of Pathology, Rikshospitalet, Oslo University Hospital and University of Oslo, Oslo, Norway; Department of Medical Biology, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway.
| | - Alexandre Corthay
- Tumor Immunology Lab, Department of Pathology, Rikshospitalet, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Michael Koutsilieris
- Department of Experimental Physiology, Medical School, National & Kapodistrian University of Athens, Athens, Greece
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24
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Brinkmann U, Kontermann RE. The making of bispecific antibodies. MAbs 2017; 9:182-212. [PMID: 28071970 PMCID: PMC5297537 DOI: 10.1080/19420862.2016.1268307] [Citation(s) in RCA: 603] [Impact Index Per Article: 86.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/18/2016] [Accepted: 11/29/2016] [Indexed: 12/12/2022] Open
Abstract
During the past two decades we have seen a phenomenal evolution of bispecific antibodies for therapeutic applications. The 'zoo' of bispecific antibodies is populated by many different species, comprising around 100 different formats, including small molecules composed solely of the antigen-binding sites of two antibodies, molecules with an IgG structure, and large complex molecules composed of different antigen-binding moieties often combined with dimerization modules. The application of sophisticated molecular design and genetic engineering has solved many of the technical problems associated with the formation of bispecific antibodies such as stability, solubility and other parameters that confer drug properties. These parameters may be summarized under the term 'developability'. In addition, different 'target product profiles', i.e., desired features of the bispecific antibody to be generated, mandates the need for access to a diverse panel of formats. These may vary in size, arrangement, valencies, flexibility and geometry of their binding modules, as well as in their distribution and pharmacokinetic properties. There is not 'one best format' for generating bispecific antibodies, and no single format is suitable for all, or even most of, the desired applications. Instead, the bispecific formats collectively serve as a valuable source of diversity that can be applied to the development of therapeutics for various indications. Here, a comprehensive overview of the different bispecific antibody formats is provided.
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Affiliation(s)
- Ulrich Brinkmann
- Roche Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Im Nonnenwald, Penzberg, Germany
| | - Roland E. Kontermann
- Institute of Cell Biology and Immunology, University of Stuttgart, Allmandring, Stuttgart, Germany
- Stuttgart Research Center Systems Biology, University of Stuttgart, Nobelstraße, Stuttgart, Germany
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25
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Kim HS, Dunshee DR, Yee A, Tong RK, Kim I, Farahi F, Hongo JA, Ernst JA, Sonoda J, Spiess C. Tethered-variable CL bispecific IgG: an antibody platform for rapid bispecific antibody screening. Protein Eng Des Sel 2017; 30:627-637. [PMID: 28985411 PMCID: PMC5914367 DOI: 10.1093/protein/gzx034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 06/26/2017] [Indexed: 12/31/2022] Open
Abstract
Bispecific antibodies offer a clinically validated platform for drug discovery. In generating functionally active bispecific antibodies, it is necessary to identify a unique parental antibody pair to merge into a single molecule. However, technologies that allow high-throughput production of bispecific immunoglobulin Gs (BsIgGs) for screening purposes are limited. Here, we describe a novel bispecific antibody format termed tethered-variable CLBsIgG (tcBsIgG) that allows robust production of intact BsIgG in a single cell line, concurrently ensuring cognate light chain pairing and preserving key antibody structural and functional properties. This technology is broadly applicable in the generation of BsIgG from a variety of antibody isotypes, including human BsIgG1, BsIgG2 and BsIgG4. The practicality of the tcBsIgG platform is demonstrated by screening BsIgGs generated from FGF21-mimetic anti-Klotho-β agonistic antibodies in a combinatorial manner. This screen identified multiple biepitopic combinations with enhanced agonistic activity relative to the parental monoclonal antibodies, thereby demonstrating that biepitopic antibodies can acquire enhanced functionality compared to monospecific parental antibodies. By design, the tcBsIgG format is amenable to high-throughput production of large panels of bispecific antibodies and thus can facilitate the identification of rare BsIgG combinations to enable the discovery of molecules with improved biological function.
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Affiliation(s)
- Hok Seon Kim
- Department of Antibody Engineering, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Diana Ronai Dunshee
- Department of Molecular Biology, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Angie Yee
- Department of Antibody Engineering, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Raymond K Tong
- Department of Protein Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Ingrid Kim
- Department of Antibody Engineering, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Farzam Farahi
- Department of Antibody Engineering, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jo-Anne Hongo
- Department of Antibody Engineering, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - James A Ernst
- Department of Protein Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Junichiro Sonoda
- Department of Molecular Biology, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Christoph Spiess
- Department of Antibody Engineering, Genentech Inc., 1 DNA Way, South San Francisco, CA 94080, USA
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26
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Xing J, Lin L, Li J, Liu J, Zhou C, Pan H, Shu R, Dong B, Cao D, Li Q, Wang Z. BiHC, a T-Cell-Engaging Bispecific Recombinant Antibody, Has Potent Cytotoxic Activity Against Her2 Tumor Cells. Transl Oncol 2017; 10:780-785. [PMID: 28797938 PMCID: PMC5548338 DOI: 10.1016/j.tranon.2017.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 07/09/2017] [Accepted: 07/14/2017] [Indexed: 12/26/2022] Open
Abstract
Among different cancer immunotherapy approaches, bispecific antibodies (BsAbs) are of great interest due to their ability to recruit immune cells to kill tumor cells directly. Various BsAbs against Her2 tumor cells have been proposed with potent cytotoxic activities. However, most of these formats require extensive processing to obtain heterodimeric bispecific antibodies. In this study, we describe a bispecific antibody, BiHC (bispecific Her2-CD3 antibody), constructed with a single-domain anti-Her2 and a single-chain Fv (variable fragment) of anti-CD3 in an IgG-like format. In contrast to most IgG-like BsAbs, the two arms in BiHC have different molecular weights, making it easier to separate hetero- or homodimers. BiHC can be expressed in Escherichia coli and purified via Protein A affinity chromatography. The purified BiHC can recruit T cells and induce specific cytotoxicity of Her2-expressing tumor cells in vitro. The BiHC can also efficiently inhibit the tumor growth in vivo. Thus, BiHC is a promising candidate for the treatment of Her2-positive cancers.
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Affiliation(s)
- Jieyu Xing
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
| | - Limin Lin
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
| | - Jing Li
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
| | - Jiayu Liu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
| | - Changhua Zhou
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
| | - Haitao Pan
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
| | - Rui Shu
- Ying Rui Inc., Guangzhou, Guangdong, China 510009.
| | - Bin Dong
- School of Biosciences and Biopharmaceutics, Guangdong pharmaceutical University, Guangzhou, Guangdong, China 510009.
| | - Donglin Cao
- Department of Laboratory Medicine, Guangdong No. 2 Provincial People's Hospital, Guangzhou, China 510317.
| | - Qing Li
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
| | - Zhong Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, Guangzhou, China 510006; Center for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, China 510006.
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Gvozdenovic A, Boro A, Born W, Muff R, Fuchs B. A bispecific antibody targeting IGF-IR and EGFR has tumor and metastasis suppressive activity in an orthotopic xenograft osteosarcoma mouse model. Am J Cancer Res 2017; 7:1435-1449. [PMID: 28744395 PMCID: PMC5523026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 05/25/2017] [Indexed: 06/07/2023] Open
Abstract
Osteosarcoma is a highly aggressive bone cancer and the second most frequent cause of cancer-associated death in childhood and adolescence. Pulmonary metastases account for the high mortality rate in osteosarcoma patients. Therefore, novel therapeutic approaches, efficiently restraining the metastatic disease, are mandatory for a significant improvement of the currently poor patients' survival. Although initial studies with antibodies targeting insulin-like growth factor receptor (IGF-IR) showed promising potential for the treatment of patients with bone and soft tissue sarcomas, phase II clinical trials revealed variable results, which implied activation of alternative signaling pathways leading to therapy resistance. Since a cross-talk between IGF-IR and the epidermal growth factor receptor (EGFR) has been demonstrated in several cancer types, co-targeting of these two receptors was considered in the present study as a valuable therapeutic strategy to overcome single-agent treatment resistance in osteosarcoma. The effects of IGF-IR and/or EGFR targeting by intraperitoneal administration of the monospecific IGF-IR antibody R1507 or the EGFR antibody Cetuximab or the bispecific IGF-IR/EGFR antibody XGFR* on primary tumor growth and pulmonary metastasis were investigated in an intratibial human xenograft osteosarcoma mouse model. In vitro functional assays demonstrated that targeting IGF-IR and EGFR didn't affect osteosarcoma cell viability, but inhibited ligand-activated intracellular signaling and cell migratory capacity. The blocking potential of ligand-induced signaling in vitro was similar for all antibodies, but, in vivo, only XGFR* treatment significantly inhibited intratibial primary tumor growth and pulmonary metastasis. The therapeutic response to XGFR* was associated with an infiltration of innate immune system effector cells into the tumor microenvironment. Taken together, our study highlights the bispecific anti-IGF-IR/EGFR antibody XGFR* as an innovative promising effective candidate for the treatment of metastatic osteosarcoma and provides the rationale for future clinical studies.
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Affiliation(s)
- Ana Gvozdenovic
- Laboratory for Orthopedic Research, Department of Orthopedics, Balgrist University HospitalZurich, Switzerland
| | - Aleksandar Boro
- Laboratory for Orthopedic Research, Department of Orthopedics, Balgrist University HospitalZurich, Switzerland
| | - Walter Born
- Laboratory for Orthopedic Research, Department of Orthopedics, Balgrist University HospitalZurich, Switzerland
| | - Roman Muff
- Laboratory for Orthopedic Research, Department of Orthopedics, Balgrist University HospitalZurich, Switzerland
| | - Bruno Fuchs
- Laboratory for Orthopedic Research, Department of Orthopedics, Balgrist University HospitalZurich, Switzerland
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Liu H, Saxena A, Sidhu SS, Wu D. Fc Engineering for Developing Therapeutic Bispecific Antibodies and Novel Scaffolds. Front Immunol 2017; 8:38. [PMID: 28184223 PMCID: PMC5266686 DOI: 10.3389/fimmu.2017.00038] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 01/10/2017] [Indexed: 12/20/2022] Open
Abstract
Therapeutic monoclonal antibodies have become molecules of choice to treat autoimmune disorders, inflammatory diseases, and cancer. Moreover, bispecific/multispecific antibodies that target more than one antigen or epitope on a target cell or recruit effector cells (T cell, natural killer cell, or macrophage cell) toward target cells have shown great potential to maximize the benefits of antibody therapy. In the past decade, many novel concepts to generate bispecific and multispecific antibodies have evolved successfully into a range of formats from full bispecific immunoglobulin gammas to antibody fragments. Impressively, antibody fragments such as bispecific T-cell engager, bispecific killer cell engager, trispecific killer cell engager, tandem diabody, and dual-affinity-retargeting are showing exciting results in terms of recruiting and activating self-immune effector cells to target and lyse tumor cells. Promisingly, crystallizable fragment (Fc) antigen-binding fragment and monomeric antibody or half antibody may be particularly advantageous to target solid tumors owing to their small size and thus good tissue penetration potential while, on the other hand, keeping Fc-related effector functions such as antibody-dependent cellular cytotoxicity, complement-dependent cytotoxicity, antibody-dependent cell-mediated phagocytosis, and extended serum half-life via interaction with neonatal Fc receptor. This review, therefore, focuses on the progress of Fc engineering in generating bispecific molecules and on the use of small antibody fragment as scaffolds for therapeutic development.
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Affiliation(s)
- Hongyan Liu
- Laboratory of Antibody Engineering, Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University , Shanghai , China
| | - Abhishek Saxena
- Laboratory of Antibody Engineering, Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University , Shanghai , China
| | - Sachdev S Sidhu
- Laboratory of Antibody Engineering, Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai, China; Banting and Best Department of Medical Research, Terrence Donnelly Center for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada; Department of Molecular Genetics, Terrence Donnelly Center for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - Donghui Wu
- Laboratory of Antibody Engineering, Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University , Shanghai , China
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Dengl S, Sustmann C, Brinkmann U. Engineered hapten-binding antibody derivatives for modulation of pharmacokinetic properties of small molecules and targeted payload delivery. Immunol Rev 2016; 270:165-77. [PMID: 26864111 PMCID: PMC4755198 DOI: 10.1111/imr.12386] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Hapten‐binding antibodies have for more than 50 years played a pivotal role in immunology, paving the way to antibody generation (as haptens are very important and robust immunogens), to antibody characterization (as the first structures generated more than 40 years ago were those of hapten binders), and enabled and expanded antibody engineering technologies. The latter field of engineered antibodies evolved over many years and many steps resulting in recombinant humanized or human‐derived antibody derivatives in multiple formats. Today, hapten‐binding antibodies are applied not only as reagents and tools (where they still play an important part) but evolved also to engineered targeting and pretargeting vehicles for disease diagnosis and therapy. Here we describe recent applications of hapten‐binding antibodies and of engineered mono‐ and bispecific hapten‐binding antibody derivatives. We have designed and applied these molecules for the modulation of the pharmacokinetic properties of small compounds or peptides. They are also integrated as additional binding entities into bispecific antibody formats. Here they serve as non‐covalent or covalent coupling modules to haptenylated compounds, to enable targeted payload delivery to disease tissues or cells.
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Affiliation(s)
- Stefan Dengl
- 1Roche Pharma Research & Early Development, Large Molecule Research, Roche Innovation Center Penzberg, Penzberg, Germany
| | - Claudio Sustmann
- 1Roche Pharma Research & Early Development, Large Molecule Research, Roche Innovation Center Penzberg, Penzberg, Germany
| | - Ulrich Brinkmann
- 1Roche Pharma Research & Early Development, Large Molecule Research, Roche Innovation Center Penzberg, Penzberg, Germany
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30
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Ha JH, Kim JE, Kim YS. Immunoglobulin Fc Heterodimer Platform Technology: From Design to Applications in Therapeutic Antibodies and Proteins. Front Immunol 2016; 7:394. [PMID: 27766096 PMCID: PMC5052280 DOI: 10.3389/fimmu.2016.00394] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/16/2016] [Indexed: 01/02/2023] Open
Abstract
The monospecific and bivalent characteristics of naturally occurring immunoglobulin G (IgG) antibodies depend on homodimerization of the fragment crystallizable (Fc) regions of two identical heavy chains (HCs) and the subsequent assembly of two identical light chains (LCs) via disulfide linkages between each HC and LC. Immunoglobulin Fc heterodimers have been engineered through modifications to the CH3 domain interface, with different mutations on each domain such that the engineered Fc fragments, carrying the CH3 variant pair, preferentially form heterodimers rather than homodimers. Many research groups have adopted different strategies to generate Fc heterodimers, with the goal of high heterodimerization yield, while retaining biophysical and biological properties of the wild-type Fc. Based on their ability to enforce heterodimerization between the two different HCs, the established Fc heterodimers have been extensively exploited as a scaffold to generate bispecific antibodies (bsAbs) in full-length IgG and IgG-like formats. These have many of the favorable properties of natural IgG antibodies, such as high stability, long serum half-life, low immunogenicity, and immune effector functions. As of July 2016, more than seven heterodimeric Fc-based IgG-format bsAbs are being evaluated in clinical trials. In addition to bsAbs, heterodimeric Fc technology is very promising for the generation of Fc-fused proteins and peptides, as well as cytokines (immunocytokines), which can present the fusion partners in the natural monomeric or heterodimeric form rather than the artificial homodimeric form with wild-type Fc. Here, we present relevant concepts and strategies for the generation of heterodimeric Fc proteins, and their application in the development of bsAbs in diverse formats for optimal biological activity. In addition, we describe wild-type Fc-fused monomeric and heterodimeric proteins, along with the difficulties associated with their preparations, and discuss the use of heterodimeric Fc as an alternative scaffold of wild-type Fc for naturally monomeric or heterodimeric proteins, to create Fc-fusion proteins with novel therapeutic modality.
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Affiliation(s)
- Ji-Hee Ha
- Department of Molecular Science and Technology, Ajou University , Suwon , Korea
| | - Jung-Eun Kim
- Department of Molecular Science and Technology, Ajou University , Suwon , Korea
| | - Yong-Sung Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Korea; Department of Applied Chemistry and Biological Engineering, College of Engineering, Ajou University, Suwon, Korea
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31
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Dashivets T, Stracke J, Dengl S, Knaupp A, Pollmann J, Buchner J, Schlothauer T. Oxidation in the complementarity-determining regions differentially influences the properties of therapeutic antibodies. MAbs 2016; 8:1525-1535. [PMID: 27612038 PMCID: PMC5098445 DOI: 10.1080/19420862.2016.1231277] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Therapeutic antibodies can undergo a variety of chemical modification reactions in vitro. Depending on the site of modification, either antigen binding or Fc-mediated functions can be affected. Oxidation of tryptophan residues is one of the post-translational modifications leading to altered antibody functionality. In this study, we examined the structural and functional properties of a therapeutic antibody construct and 2 affinity matured variants thereof. Two of the 3 antibodies carry an oxidation-prone tryptophan residue in the complementarity-determining region of the VL domain. We demonstrate the differences in the stability and bioactivity of the 3 antibodies, and reveal differential degradation pathways for the antibodies susceptible to oxidation.
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Affiliation(s)
- Tetyana Dashivets
- a Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich , Germany.,b Center for Integrated Protein Science Munich , Department Chemie, Technische Universität München , Garching , Germany
| | - Jan Stracke
- c Early-Stage Pharmaceutical Development & GLP Supplies, F. Hoffmann-La Roche Ltd Pharmaceutical Development & Supplies PTD Biologics Europe , Basel , Switzerland
| | - Stefan Dengl
- a Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich , Germany
| | - Alexander Knaupp
- a Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich , Germany
| | | | - Johannes Buchner
- b Center for Integrated Protein Science Munich , Department Chemie, Technische Universität München , Garching , Germany
| | - Tilman Schlothauer
- a Roche Pharma Research and Early Development (pRED), Large Molecule Research, Roche Innovation Center Munich , Germany
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32
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Castoldi R, Schanzer J, Panke C, Jucknischke U, Neubert NJ, Croasdale R, Scheuer W, Auer J, Klein C, Niederfellner G, Kobold S, Sustmann C. TetraMabs: simultaneous targeting of four oncogenic receptor tyrosine kinases for tumor growth inhibition in heterogeneous tumor cell populations. Protein Eng Des Sel 2016; 29:467-475. [PMID: 27578890 PMCID: PMC5036864 DOI: 10.1093/protein/gzw037] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 07/11/2016] [Indexed: 11/14/2022] Open
Abstract
Monoclonal antibody-based targeted tumor therapy has greatly improved treatment options for patients. Antibodies against oncogenic receptor tyrosine kinases (RTKs), especially the ErbB receptor family, are prominent examples. However, long-term efficacy of such antibodies is limited by resistance mechanisms. Tumor evasion by a priori or acquired activation of other kinases is often causative for this phenomenon. These findings led to an increasing number of combination approaches either within a protein family, e.g. the ErbB family or by targeting RTKs of different phylogenetic origin like HER1 and cMet or HER1 and IGF1R. Progress in antibody engineering technology enabled generation of clinical grade bispecific antibodies (BsAbs) to design drugs inherently addressing such resistance mechanisms. Limited data are available on multi-specific antibodies targeting three or more RTKs. In the present study, we have evaluated the cloning, eukaryotic expression and purification of tetraspecific, tetravalent Fc-containing antibodies targeting HER3, cMet, HER1 and IGF1R. The antibodies are based on the combination of single-chain Fab and Fv fragments in an IgG1 antibody format enhanced by the knob-into-hole technology. They are non-agonistic and inhibit tumor cell growth comparable to the combination of four parental antibodies. Importantly, TetraMabs show improved apoptosis induction and tumor growth inhibition over individual monospecific or BsAbs in cellular assays. In addition, a mimicry assay to reflect heterogeneous expression of antigens in a tumor mass was established. With this novel in vitro assay, we can demonstrate the superiority of a tetraspecific antibody to bispecific tumor antigen-binding antibodies in early pre-clinical development.
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Affiliation(s)
- Raffaella Castoldi
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Jürgen Schanzer
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Christian Panke
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Ute Jucknischke
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Natalie J Neubert
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Rebecca Croasdale
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Werner Scheuer
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Johannes Auer
- pRED, Roche Pharma Research & Early Development, Roche Large Molecule Research, Roche Innovation Center, Munich, Nonnenwald 2, 82377 Penzberg, Germany
| | - Christian Klein
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Zuerich, Switzerland, Wagistrasse 18, 8952 Schlieren
| | - Gerhard Niederfellner
- pRED, Roche Pharma Research & Early Development, Roche Innovation Center, Munich, Germany
| | - Sebastian Kobold
- Center of Integrated Protein Science Munich (CIPS-M) and Division of Clinical Pharmacology, Department of Medicine IV, Klinikum der Universität München, Lindwurmstraße 2a, 80337 Munich, Germany, Member of the German Center for Lung Research (DZL)
| | - Claudio Sustmann
- pRED, Roche Pharma Research & Early Development, Roche Large Molecule Research, Roche Innovation Center, Munich, Nonnenwald 2, 82377 Penzberg, Germany
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33
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Nakayama M, Komiya S, Fujiwara K, Horisawa K, Doi N. In vitro selection of bispecific diabody fragments using covalent bicistronic DNA display. Biochem Biophys Res Commun 2016; 478:606-11. [PMID: 27473655 DOI: 10.1016/j.bbrc.2016.07.113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 07/25/2016] [Indexed: 12/25/2022]
Abstract
Bispecific antibodies with two different antigen-binding sites have been widely used for a variety of medical applications. The activity and stability of antibody fragments can be improved by in vitro evolution. Although the affinity and stability of small bispecific antibody fragments such as diabodies can be further optimized by in vitro display technologies, cell-free display of bispecific antibody fragments has not been reported. In this study, we applied a covalent bicistronic DNA display for the in vitro selection of heterodimeric diabodies. First, we confirmed the antigen-binding activities of a diabody synthesized by an in vitro transcription and translation system. However, when we performed DNA-display selection of a model diabody library in a proof-of-principle experiment, no enrichment of the diabody gene was observed, likely due to a low yield of the diabody heterodimer. To overcome this issue, we introduced cysteine residues at the VH-VL interface of the diabody heterodimer. Using the disulfide-stabilized diabodies, we successfully enriched the diabody gene from a model library. Our results indicate that the covalent bicistronic DNA display technique could be useful for improving the stability and affinity of bispecific diabody fragments.
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Affiliation(s)
- Masanao Nakayama
- Department of Biosciences and Informatics, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Shoko Komiya
- Department of Biosciences and Informatics, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Kei Fujiwara
- Department of Biosciences and Informatics, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Kenichi Horisawa
- Department of Biosciences and Informatics, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan
| | - Nobuhide Doi
- Department of Biosciences and Informatics, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan.
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34
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Klein C, Schaefer W, Regula JT. The use of CrossMAb technology for the generation of bi- and multispecific antibodies. MAbs 2016; 8:1010-20. [PMID: 27285945 PMCID: PMC4968094 DOI: 10.1080/19420862.2016.1197457] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The major challenge in the generation of bispecific IgG antibodies is enforcement of the correct heavy and light chain association. The correct association of generic light chains can be enabled using immunoglobulin domain crossover, known as CrossMAb technology, which can be combined with approaches enabling correct heavy chain association such as knobs-into-holes (KiH) technology or electrostatic steering. Since its development, this technology has proven to be very versatile, allowing the generation of various bispecific antibody formats, not only heterodimeric/asymmetric bivalent 1+1 CrossMAbs, but also tri- (2+1), tetravalent (2+2) bispecific and multispecific antibodies. Numerous CrossMAbs have been evaluated in preclinical studies, and, so far, 4 different tailor-made bispecific antibodies based on the CrossMAb technology have entered clinical studies. Here, we review the properties and activities of bispecific CrossMAbs and give an overview of the variety of CrossMAb-enabled antibody formats that differ from heterodimeric 1+1 bispecific IgG antibodies.
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Affiliation(s)
- Christian Klein
- a Roche Innovation Center Zurich , Roche Pharmaceutical Research & Early Development, Wagistrasse , Schlieren , Switzerland
| | - Wolfgang Schaefer
- b Roche Innovation Center Munich , Roche Pharmaceutical Research & Early Development, Nonnenwald , Penzberg , Germany
| | - Jörg T Regula
- b Roche Innovation Center Munich , Roche Pharmaceutical Research & Early Development, Nonnenwald , Penzberg , Germany
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35
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Schanzer JM, Wartha K, Moessner E, Hosse RJ, Moser S, Croasdale R, Trochanowska H, Shao C, Wang P, Shi L, Weinzierl T, Rieder N, Bacac M, Ries CH, Kettenberger H, Schlothauer T, Friess T, Umana P, Klein C. XGFR*, a novel affinity-matured bispecific antibody targeting IGF-1R and EGFR with combined signaling inhibition and enhanced immune activation for the treatment of pancreatic cancer. MAbs 2016; 8:811-27. [PMID: 26984378 PMCID: PMC4966845 DOI: 10.1080/19420862.2016.1160989] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The epidermal growth factor receptor (EGFR) and the insulin-like growth factor-1 receptor (IGF-1R) play critical roles in tumor growth, providing a strong rationale for the combined inhibition of IGF-1R and EGFR signaling in cancer therapy. We describe the design, affinity maturation, in vitro and in vivo characterization of the bispecific anti-IGF-1R/EGFR antibody XGFR*. XGFR* is based on the bispecific IgG antibody XGFR, which enabled heterodimerization of an IGF-1R binding scFab heavy chain with an EGFR-binding light and heavy chain by the "knobs-into-holes" technology. XGFR* is optimized for monovalent binding of human EGFR and IGF-1R with increased binding affinity for IGF-1R due to affinity maturation and highly improved protein stability to oxidative and thermal stress. It bears an afucosylated Fc-portion for optimal induction of antibody-dependent cell-mediated cytotoxicity (ADCC). Stable Chinese hamster ovary cell clones with production yields of 2-3 g/L were generated, allowing for large scale production of the bispecific antibody. XGFR* potently inhibits EGFR- and IGF-1R-dependent receptor phosphorylation, reduces tumor cell proliferation in cells with heterogeneous levels of IGF-1R and EGFR receptor expression and induces strong ADCC in vitro. A comparison of pancreatic and colorectal cancer lines demonstrated superior responsiveness to XGFR*-mediated signaling and tumor growth inhibition in pancreatic cancers that frequently show a high degree of IGF-1R/EGFR co-expression. XGFR* showed potent anti-tumoral efficacy in the orthotopic MiaPaCa-2 pancreatic xenograft model, resulting in nearly complete tumor growth inhibition with significant number of tumor remissions. In summary, the bispecific anti-IGF-1R/EGFR antibody XGFR* combines potent signaling and tumor growth inhibition with enhanced ADCC induction and represents a clinical development candidate for the treatment of pancreatic cancer.
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Affiliation(s)
- Juergen M Schanzer
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Katharina Wartha
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Ekkehard Moessner
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
| | - Ralf J Hosse
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
| | - Samuel Moser
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
| | - Rebecca Croasdale
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Halina Trochanowska
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
| | - Cuiying Shao
- c Pharma Research and Early Development, Roche Innovation Center Shanghai , Cai Lun Road, Shanghai , China
| | - Peng Wang
- c Pharma Research and Early Development, Roche Innovation Center Shanghai , Cai Lun Road, Shanghai , China
| | - Lei Shi
- c Pharma Research and Early Development, Roche Innovation Center Shanghai , Cai Lun Road, Shanghai , China
| | - Tina Weinzierl
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
| | - Natascha Rieder
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Marina Bacac
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
| | - Carola H Ries
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Hubert Kettenberger
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Tilman Schlothauer
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Thomas Friess
- a Roche Pharma Research and Early Development, Roche Innovation Center Munich , Nonnenwald, Penzberg , Germany
| | - Pablo Umana
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
| | - Christian Klein
- b Roche Pharma Research and Early Development, Roche Innovation Center Zurich , Wagistrasse, Schlieren , Switzerland
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36
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Golay J, Choblet S, Iwaszkiewicz J, Cérutti P, Ozil A, Loisel S, Pugnière M, Ubiali G, Zoete V, Michielin O, Berthou C, Kadouche J, Mach JP, Duonor-Cérutti M. Design and Validation of a Novel Generic Platform for the Production of Tetravalent IgG1-like Bispecific Antibodies. THE JOURNAL OF IMMUNOLOGY 2016; 196:3199-211. [PMID: 26921308 DOI: 10.4049/jimmunol.1501592] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 01/28/2016] [Indexed: 01/01/2023]
Abstract
We have designed and validated a novel generic platform for production of tetravalent IgG1-like chimeric bispecific Abs. The VH-CH1-hinge domains of mAb2 are fused through a peptidic linker to the N terminus of mAb1 H chain, and paired mutations at the CH1-CL interface mAb1 are introduced that force the correct pairing of the two different free L chains. Two different sets of these CH1-CL interface mutations, called CR3 and MUT4, were designed and tested, and prototypic bispecific Abs directed against CD5 and HLA-DR were produced (CD5xDR). Two different hinge sequences between mAb1 and mAb2 were also tested in the CD5xDR-CR3 or -MUT4 background, leading to bispecific Ab (BsAbs) with a more rigid or flexible structure. All four Abs produced bound with good specificity and affinity to CD5 and HLA-DR present either on the same target or on different cells. Indeed, the BsAbs were able to efficiently redirect killing of HLA-DR(+) leukemic cells by human CD5(+) cytokine-induced killer T cells. Finally, all BsAbs had a functional Fc, as shown by their capacity to activate human complement and NK cells and to mediate phagocytosis. CD5xDR-CR3 was chosen as the best format because it had overall the highest functional activity and was very stable in vitro in both neutral buffer and in serum. In vivo, CD5xDR-CR3 was shown to have significant therapeutic activity in a xenograft model of human leukemia.
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Affiliation(s)
- Josée Golay
- Centro di Terapia Cellulare "G. Lanzani," Divisione di Ematologia, Azienda Ospedaliera Papa Giovanni XXIII, 24122 Bergamo, Italy;
| | - Sylvie Choblet
- Centre National de la Recherche Scientifique UPS3044 "Baculovirus et Thérapie," F-30380 Saint-Christol-Lèz Alès, France
| | - Justyna Iwaszkiewicz
- Molecular Modeling Group, Swiss Institute of Bioinformatics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Pierre Cérutti
- Centre National de la Recherche Scientifique UPS3044 "Baculovirus et Thérapie," F-30380 Saint-Christol-Lèz Alès, France
| | - Annick Ozil
- Centre National de la Recherche Scientifique UPS3044 "Baculovirus et Thérapie," F-30380 Saint-Christol-Lèz Alès, France
| | - Séverine Loisel
- Animalerie, Faculté de Médecine, Université de Bretagne Occidentale-Université Européenne de Bretagne, 29238 Brest, France
| | - Martine Pugnière
- INSERM, U1194, Institut de Recherche en Cancérologie de Montpellier, Université de Montpellier, Institut du Cancer de Montpellier, Institut Régional du Cancer, 34298 Montpellier, France
| | - Greta Ubiali
- Centro di Terapia Cellulare "G. Lanzani," Divisione di Ematologia, Azienda Ospedaliera Papa Giovanni XXIII, 24122 Bergamo, Italy
| | - Vincent Zoete
- Molecular Modeling Group, Swiss Institute of Bioinformatics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Olivier Michielin
- Molecular Modeling Group, Swiss Institute of Bioinformatics, University of Lausanne, 1015 Lausanne, Switzerland; Ludwig Center for Cancer Research, University of Lausanne, CH-1011 Lausanne, Switzerland; Département d'oncologie, Université de Lausanne-Centre Hospitalier Universitaire Vaudois, CH-1011 Lausanne, Switzerland
| | | | - Jean Kadouche
- MAT Biopharma, 91030 Evry, France; Immune Pharmaceuticals Inc., New York, NY 10016
| | - Jean-Pierre Mach
- Department of Biochemistry, University of Lausanne, CH-1066 Epalinges, Switzerland; and Biomunex Pharmaceuticals, 75006 Paris, France
| | - Martine Duonor-Cérutti
- Centre National de la Recherche Scientifique UPS3044 "Baculovirus et Thérapie," F-30380 Saint-Christol-Lèz Alès, France
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van Steeg TJ, Bergmann KR, Dimasi N, Sachsenmeier KF, Agoram B. The application of mathematical modelling to the design of bispecific monoclonal antibodies. MAbs 2016; 8:585-92. [PMID: 26910134 PMCID: PMC4966826 DOI: 10.1080/19420862.2016.1141160] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 12/22/2015] [Accepted: 01/07/2016] [Indexed: 12/31/2022] Open
Abstract
Targeting multiple receptors with bispecific antibodies is a novel approach that may prevent the development of resistance to cancer treatments. Despite the initial promise, full clinical benefit of this technology has yet to be realized. We hypothesized that in order to optimally exploit bispecific antibody technology, thorough fundamental knowledge of their pharmacological properties compared to that of single agent combinations was needed. Therefore, we developed a mathematical model for the binding of bispecific antibodies to their targets that accounts for the spatial distribution of the binding receptors and the kinetics of binding, and is scalable for increasing valency. The model provided an adequate description of internal and literature-reported in vitro data on bispecific binding. Simulations of in vitro binding with the model indicated that bispecific antibodies are not always superior in their binding potency to combination of antibodies, and the affinity of bispecific arms must be optimized for maximum binding potency. Our results suggest that this tool can be used for the design and development of the next generation of anti-cancer bispecific compounds.
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Affiliation(s)
| | | | - Nazzareno Dimasi
- Antibody Discovery and Protein Engineering, Medimmune, LLC, Gaithersburg, MD, USA
| | | | - Balaji Agoram
- Clinical Pharmacology/DMPK, MedImmune, LLC, Mountain View, CA, USA
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Mazor Y, Oganesyan V, Yang C, Hansen A, Wang J, Liu H, Sachsenmeier K, Carlson M, Gadre DV, Borrok MJ, Yu XQ, Dall'Acqua W, Wu H, Chowdhury PS. Improving target cell specificity using a novel monovalent bispecific IgG design. MAbs 2015; 7:377-89. [PMID: 25621507 PMCID: PMC4622537 DOI: 10.1080/19420862.2015.1007816] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Monovalent bispecific IgGs cater to a distinct set of mechanisms of action but are difficult to engineer and manufacture because of complexities associated with correct heavy and light chain pairing. We have created a novel design, “DuetMab,” for efficient production of these molecules. The platform uses knobs-into-holes (KIH) technology for heterodimerization of 2 distinct heavy chains and increases the efficiency of cognate heavy and light chain pairing by replacing the native disulfide bond in one of the CH1-CL interfaces with an engineered disulfide bond. Using two pairs of antibodies, cetuximab (anti-EGFR) and trastuzumab (anti-HER2), and anti-CD40 and anti-CD70 antibodies, we demonstrate that DuetMab antibodies can be produced in a highly purified and active form, and show for the first time that monovalent bispecific IgGs can concurrently bind both antigens on the same cell. This last property compensates for the loss of avidity brought about by monovalency and improves selectivity toward the target cell.
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Key Words
- ADCC, antibody-dependent cell-mediated cytotoxicity
- Biotechnology
- CDR, complementarity determining region
- CH1, 2 and 3-heavy chain constant domain 1, 2 and 3
- CL-, light chain constant domain
- DSC-differential scanning calorimetry
- E:T, ratio of effector to target cells
- EGFR
- EGFR, epidermal growth factor receptor
- FcRn, neonatal Fc receptor
- FcγR, receptor for IgG Fc
- HER2
- IGFR, insulin like growth factor receptor
- IL-6, interleukin 6
- IgG, Immunoglobulin G
- PNGase, protein N-glycanase
- Q1q, first component of complement 1
- RAGE, receptor for advanced glycosylation
- antibody engineering
- bispecific antibody
- cancer
- disulfide
- mAbs, monoclonal antibodies
- multi-targeting
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Affiliation(s)
- Yariv Mazor
- a Department of Antibody Discovery and Protein Engineering ; MedImmune ; Gaithersburg , MD USA
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Redman JM, Hill EM, AlDeghaither D, Weiner LM. Mechanisms of action of therapeutic antibodies for cancer. Mol Immunol 2015; 67:28-45. [PMID: 25911943 PMCID: PMC4529810 DOI: 10.1016/j.molimm.2015.04.002] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 03/29/2015] [Accepted: 04/03/2015] [Indexed: 02/06/2023]
Abstract
The therapeutic utility of antibodies and their derivatives is achieved by various means. The FDA has approved several targeted antibodies that disrupt signaling of various growth factor receptors for the treatment of a number of cancers. Rituximab, and other anti-CD20 monoclonal antibodies are active in B cell malignancies. As more experience has been gained with anti-CD20 monoclonal antibodies, the multifactorial nature of their anti-tumor mechanisms has emerged. Other targeted antibodies function to dampen inhibitory checkpoints. These checkpoint inhibitors have recently achieved dramatic results in several cancers, including melanoma. These and related antibodies continue to be investigated in the clinical and pre-clinical settings. Novel antibody structures that target two or more antigens have also made their way into clinical use. Tumor targeted antibodies can also be conjugated to chemo- or radiotherapeutic agents, or catalytic toxins, as a means to deliver toxic payloads to cancer cells. Here we provide a review of these mechanisms and a discussion of their relevance to current and future clinical applications.
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Affiliation(s)
- J M Redman
- Departments of Oncology and Internal Medicine, Georgetown University Medical Center and Lombardi Comprehensive Cancer Center, Washington, DC, United States
| | - E M Hill
- Departments of Oncology and Internal Medicine, Georgetown University Medical Center and Lombardi Comprehensive Cancer Center, Washington, DC, United States
| | - D AlDeghaither
- Departments of Oncology and Internal Medicine, Georgetown University Medical Center and Lombardi Comprehensive Cancer Center, Washington, DC, United States
| | - L M Weiner
- Departments of Oncology and Internal Medicine, Georgetown University Medical Center and Lombardi Comprehensive Cancer Center, Washington, DC, United States.
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40
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Spiess C, Zhai Q, Carter PJ. Alternative molecular formats and therapeutic applications for bispecific antibodies. Mol Immunol 2015; 67:95-106. [DOI: 10.1016/j.molimm.2015.01.003] [Citation(s) in RCA: 417] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 12/30/2014] [Accepted: 01/02/2015] [Indexed: 12/21/2022]
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Bader S, Zajac M, Friess T, Ruge E, Rieder N, Gierke B, Heubach Y, Thomas M, Pawlak M. Evaluation of Protein Profiles From Treated Xenograft Tumor Models Identifies an Antibody Panel for Formalin-fixed and Paraffin-embedded (FFPE) Tissue Analysis by Reverse Phase Protein Arrays (RPPA). Mol Cell Proteomics 2015; 14:2775-85. [PMID: 26106084 DOI: 10.1074/mcp.o114.045542] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Indexed: 12/31/2022] Open
Abstract
Reverse phase protein arrays (RPPA) are an established tool for measuring the expression and activation status of multiple proteins in parallel using only very small amounts of tissue. Several studies have demonstrated the value of this technique for signaling pathway analysis using proteins extracted from fresh frozen (FF) tissue in line with validated antibodies for this tissue type; however, formalin fixation and paraffin embedding (FFPE) is the standard method for tissue preservation in the clinical setting. Hence, we performed RPPA to measure profiles for a set of 300 protein markers using matched FF and FFPE tissue specimens to identify which markers performed similarly using the RPPA technique in fixed and unfixed tissues. Protein lysates were prepared from matched FF and FFPE tissue specimens of individual tumors taken from three different xenograft models of human cancer. Materials from both untreated mice and mice treated with either anti-HER3 or bispecific anti-IGF-1R/EGFR monoclonal antibodies were analyzed. Correlations between signals from FF and FFPE tissue samples were investigated. Overall, 60 markers were identified that produced comparable profiles between FF and FFPE tissues, demonstrating significant correlation between the two sample types. The top 25 markers also showed significance after correction for multiple testing. The panel of markers covered several clinically relevant tumor signaling pathways and both phosphorylated and nonphosphorylated proteins were represented. Biologically relevant changes in marker expression were noted when RPPA profiles from treated and untreated xenografts were compared. These data demonstrate that, using appropriately selected antibodies, RPPA analysis from FFPE tissue is well feasible and generates biologically meaningful information. The identified panel of markers that generate similar profiles in matched fixed and unfixed tissue samples may be clinically useful for pharmacodynamic studies of drug effect using FFPE tissues.
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Affiliation(s)
- Sabine Bader
- From the ‡Pharma Research & Early Development, Roche Innovation Center Penzberg, Nonnenwald 2, 82377, Penzberg, Germany
| | - Magdalena Zajac
- §Pharma Research & Early Development, Roche Innovation Centre Welwyn, 6 Falcon Way, Shire Park, Welwyn Garden City, Herts, AL7 1TW, United Kingdom
| | - Thomas Friess
- From the ‡Pharma Research & Early Development, Roche Innovation Center Penzberg, Nonnenwald 2, 82377, Penzberg, Germany
| | - Elisabeth Ruge
- From the ‡Pharma Research & Early Development, Roche Innovation Center Penzberg, Nonnenwald 2, 82377, Penzberg, Germany
| | - Natascha Rieder
- From the ‡Pharma Research & Early Development, Roche Innovation Center Penzberg, Nonnenwald 2, 82377, Penzberg, Germany
| | - Berthold Gierke
- ¶Department Biochemistry & Protein Profiling, NMI Natural and Medical Sciences Institute at the University of Tuebingen, Markwiesenstrasse 55, 72770, Reutlingen, Germany
| | - Yvonne Heubach
- ¶Department Biochemistry & Protein Profiling, NMI Natural and Medical Sciences Institute at the University of Tuebingen, Markwiesenstrasse 55, 72770, Reutlingen, Germany
| | - Marlene Thomas
- ‖Roche Pharma AG, Emil-Barell-Str. 1, 79639, Grenzach-Wyhlen, Germany
| | - Michael Pawlak
- ¶Department Biochemistry & Protein Profiling, NMI Natural and Medical Sciences Institute at the University of Tuebingen, Markwiesenstrasse 55, 72770, Reutlingen, Germany;
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Abstract
Antibody drugs have become an increasingly significant component of the therapeutic landscape. Their success has been driven by some of their unique properties, in particular their very high specificity and selectivity, in contrast to the off-target liabilities of small molecules (SMs). Antibodies can bring additional functionality to the table with their ability to interact with the immune system, and this can be further manipulated with advances in antibody engineering. This review summarizes what antibody therapeutics have achieved to date and what opportunities and challenges lie ahead. The target landscape for large molecules (LMs) versus SMs and some of the challenges for antibody drug development are discussed. Effective penetration of membrane barriers and intracellular targeting is one challenge, particularly across the highly resistant blood-brain barrier. The expanding pipeline of antibody-drug conjugates offers the potential to combine SM and LM modalities in a variety of creative ways, and antibodies also offer exciting potential to build bi- and multispecific molecules. The ability to pursue more challenging targets can also be further exploited but highlights the need for earlier screening in functional cell-based assays. I discuss how this might be addressed given the practical constraints imposed by high-throughput screening sample type and process differences in antibody primary screening.
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Affiliation(s)
- Alison J. Smith
- Department of Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
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Prat M, Oltolina F, Basilico C. Monoclonal Antibodies against the MET/HGF Receptor and Its Ligand: Multitask Tools with Applications from Basic Research to Therapy. Biomedicines 2014; 2:359-383. [PMID: 28548076 PMCID: PMC5344273 DOI: 10.3390/biomedicines2040359] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/21/2014] [Accepted: 11/24/2014] [Indexed: 12/19/2022] Open
Abstract
Monoclonal antibodies can be seen as valuable tools for many aspects of basic as well as applied sciences. In the case of MET/HGFR, they allowed the identification of truncated isoforms of the receptor, as well as the dissection of different epitopes, establishing structure-function relationships. Antibodies directed against MET extracellular domain were found to be full or partial receptor agonists or antagonists. The agonists can mimic the effects of the different isoforms of the natural ligand, but with the advantage of being more stable than the latter. Thus, some agonist antibodies promote all the biological responses triggered by MET activation, including motility, proliferation, morphogenesis, and protection from apoptosis, while others can induce only a migratory response. On the other hand, antagonists can inhibit MET-driven biological functions either by competing with the ligand or by removing the receptor from the cell surface. Since MET/HGFR is often over-expressed and/or aberrantly activated in tumors, monoclonal antibodies can be used as probes for MET detection or as "bullets" to target MET-expressing tumor cells, thus pointing to their use in diagnosis and therapy.
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Affiliation(s)
- Maria Prat
- Department of Health Sciences, Università del Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Francesca Oltolina
- Department of Health Sciences, Università del Piemonte Orientale, via Solaroli 17, 28100 Novara, Italy.
| | - Cristina Basilico
- Laboratory of Exploratory Research, Candiolo Cancer Institute, Str. Prov. 142, 10060 Candiolo, Italy.
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