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Martinelli I, Modica C, Chiriaco C, Basilico C, Hughes JM, Corso S, Giordano S, Comoglio PM, Vigna E. hOA-DN30: a highly effective humanized single-arm MET antibody inducing remission of ‘MET-addicted’ cancers. J Exp Clin Cancer Res 2022; 41:112. [PMID: 35351166 PMCID: PMC8962049 DOI: 10.1186/s13046-022-02320-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/09/2022] [Indexed: 12/21/2022] Open
Abstract
Background The tyrosine kinase receptor encoded by the MET oncogene is a major player in cancer. When MET is responsible for the onset and progression of the transformed phenotype (MET-addicted cancers), an efficient block of its oncogenic activation results in potent tumor growth inhibition. Methods Here we describe a molecular engineered MET antibody (hOA-DN30) and validate its pharmacological activity in MET-addicted cancer models in vitro and in vivo. Pharmacokinetics and safety profile in non-human primates have also been assessed. Results hOA-DN30 efficiently impaired MET activation and the intracellular signalling cascade by dose and time dependent removal of the receptor from the cell surface (shedding). In vitro, the antibody suppressed cell growth by blocking cell proliferation and by concomitantly inducing cell death in multiple MET-addicted human tumor cell lines. In mice xenografts, hOA-DN30 induced an impressive reduction of tumor masses, with a wide therapeutic window. Moreover, the antibody showed high therapeutic efficacy against patient-derived xenografts generated from MET-addicted gastric tumors, leading to complete tumor regression and long-lasting effects after treatment discontinuation. Finally, hOA-DN30 showed a highly favorable pharmacokinetic profile and substantial tolerability in Cynomolgus monkeys. Conclusions hOA-DN30 unique ability to simultaneously erase cell surface MET and release the ‘decoy’ receptor extracellular region results in a paramount MET blocking action. Its remarkable efficacy in a large number of pre-clinical models, as well as its pharmacological features and safety profile in non-human primates, strongly envisage a successful clinical application of this novel single-arm MET therapeutic antibody for the therapy of MET-addicted cancers. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-022-02320-6.
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Barzaman K, Vafaei R, Samadi M, Kazemi MH, Hosseinzadeh A, Merikhian P, Moradi-Kalbolandi S, Eisavand MR, Dinvari H, Farahmand L. Anti-cancer therapeutic strategies based on HGF/MET, EpCAM, and tumor-stromal cross talk. Cancer Cell Int 2022; 22:259. [PMID: 35986321 PMCID: PMC9389806 DOI: 10.1186/s12935-022-02658-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 07/19/2022] [Indexed: 02/08/2023] Open
Abstract
As an intelligent disease, tumors apply several pathways to evade the immune system. It can use alternative routes to bypass intracellular signaling pathways, such as nuclear factor-κB (NF-κB), Wnt, and mitogen-activated protein (MAP)/phosphoinositide 3-kinase (PI3K)/mammalian target of rapamycin (mTOR). Therefore, these mechanisms lead to therapeutic resistance in cancer. Also, these pathways play important roles in the proliferation, survival, migration, and invasion of cells. In most cancers, these signaling pathways are overactivated, caused by mutation, overexpression, etc. Since numerous molecules share these signaling pathways, the identification of key molecules is crucial to achieve favorable consequences in cancer therapy. One of the key molecules is the mesenchymal-epithelial transition factor (MET; c-Met) and its ligand hepatocyte growth factor (HGF). Another molecule is the epithelial cell adhesion molecule (EpCAM), which its binding is hemophilic. Although both of them are involved in many physiologic processes (especially in embryonic stages), in some cancers, they are overexpressed on epithelial cells. Since they share intracellular pathways, targeting them simultaneously may inhibit substitute pathways that tumor uses to evade the immune system and resistant to therapeutic agents.
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Mechanistic principles of an ultra-long bovine CDR reveal strategies for antibody design. Nat Commun 2021; 12:6737. [PMID: 34795299 PMCID: PMC8602281 DOI: 10.1038/s41467-021-27103-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 11/03/2021] [Indexed: 11/08/2022] Open
Abstract
Antibodies bind antigens via flexible loops called complementarity-determining regions (CDRs). These are usually 6-20 residues long. However, some bovine antibodies have ultra-long CDRs comprising more than 50 residues organized in a stalk and a disulfide-rich knob. The design features of this structural unit and its influence on antibody stability remained enigmatic. Here, we show that the stalk length is critical for the folding and stability of antibodies with an ultra-long CDR and that the disulfide bonds in the knob do not contribute to stability; they are important for organizing the antigen-binding knob structure. The bovine ultra-long CDR can be integrated into human antibody scaffolds. Furthermore, mini-domains from de novo design can be reformatted as ultra-long CDRs to create unique antibody-based proteins neutralizing SARS-CoV-2 and the Alpha variant of concern with high efficiency. Our findings reveal basic design principles of antibody structure and open new avenues for protein engineering.
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Fernandes M, Duplaquet L, Tulasne D. Proteolytic cleavages of MET: the divide-and-conquer strategy of a receptor tyrosine kinase. BMB Rep 2019. [PMID: 30670153 PMCID: PMC6507848 DOI: 10.5483/bmbrep.2019.52.4.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Membrane-anchored full-length MET stimulated by its ligand HGF/SF induces various biological responses, including survival, growth, and invasion. This panel of responses, referred to invasive growth, is required for embryogenesis and tissue regeneration in adults. On the contrary, MET deregulation is associated with tumorigenesis in many kinds of cancer. In addition to its well-documented ligand-stimulated downstream signaling, the receptor can be cleaved by proteases such as secretases, caspases, and calpains. These cleavages are involved either in MET receptor inactivation or, more interestingly, in generating active fragments that can modify cell fate. For instance, MET fragments can promote cell death or invasion. Given a large number of proteases capable of cleaving MET, this receptor appears as a prototype of proteolytic-cleavage-regulated receptor tyrosine kinase. In this review, we describe and discuss the mechanisms and consequences, both physiological and pathological, of MET proteolytic cleavages.
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Affiliation(s)
- Marie Fernandes
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T - Mechanisms of Tumorigenesis and Target Therapies, F-59000 Lille, France
| | - Leslie Duplaquet
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T - Mechanisms of Tumorigenesis and Target Therapies, F-59000 Lille, France
| | - David Tulasne
- University of Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T - Mechanisms of Tumorigenesis and Target Therapies, F-59000 Lille, France
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5
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Frazier NM, Brand T, Gordan JD, Grandis J, Jura N. Overexpression-mediated activation of MET in the Golgi promotes HER3/ERBB3 phosphorylation. Oncogene 2019; 38:1936-1950. [PMID: 30390071 PMCID: PMC6417953 DOI: 10.1038/s41388-018-0537-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 09/07/2018] [Accepted: 09/25/2018] [Indexed: 12/16/2022]
Abstract
Ligand-dependent oligomerization of receptor tyrosine kinases (RTKs) results in their activation through highly specific conformational changes in the extracellular and intracellular receptor domains. These conformational changes are unique for each RTK subfamily, limiting cross-activation between unrelated RTKs. The proto-oncogene MET receptor tyrosine kinase overcomes these structural constraints and phosphorylates unrelated RTKs in numerous cancer cell lines. The molecular basis for these interactions is unknown. We investigated the mechanism by which MET phosphorylates the human epidermal growth factor receptor-3 (HER3 or ERBB3), a catalytically impaired RTK whose phosphorylation by MET has been described as an essential component of drug resistance to inhibitors targeting EGFR and HER2. We find that in untransformed cells, HER3 is not phosphorylated by MET in response to ligand stimulation, but rather to increasing levels of MET expression, which results in ligand-independent MET activation. Phosphorylation of HER3 by its canonical co-receptors, EGFR and HER2, is achieved by engaging an allosteric site on the HER3 kinase domain, but this site is not required when HER3 is phosphorylated by MET. We also observe that HER3 preferentially interacts with MET during its maturation along the secretory pathway, before MET is post translationally processed by cleavage within its extracellular domain. This results in accumulation of phosphorylated HER3 in the Golgi apparatus. We further show that in addition to HER3, MET phosphorylates other RTKs in the Golgi, suggesting that this mechanism is not limited to HER3 phosphorylation. These data demonstrate a link between MET overexpression and its aberrant activation in the Golgi endomembranes and suggest that non-canonical interactions between MET and other RTKs occur during maturation of receptors. Our study highlights a novel aspect of MET signaling in cancer that would not be accessible to inhibition by therapeutic antibodies.
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Affiliation(s)
- Nicole Michael Frazier
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Toni Brand
- Department of Otolaryngology - Head and Neck Surgery, University of California, San Francisco, CA, 94113, USA
| | - John D Gordan
- Division of Hematology and Oncology - University of California, San Francisco, San Francisco, CA, 94158, USA
| | - Jennifer Grandis
- Department of Otolaryngology - Head and Neck Surgery, University of California, San Francisco, CA, 94113, USA
| | - Natalia Jura
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, 94158, USA.
- Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA, 94158, USA.
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6
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Martin V, Chiriaco C, Modica C, Acquadro A, Cortese M, Galimi F, Perera T, Gammaitoni L, Aglietta M, Comoglio PM, Vigna E, Sangiolo D. Met inhibition revokes IFNγ-induction of PD-1 ligands in MET-amplified tumours. Br J Cancer 2019; 120:527-536. [PMID: 30723303 PMCID: PMC6461865 DOI: 10.1038/s41416-018-0315-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/01/2018] [Accepted: 10/03/2018] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Interferon-induced expression of programmed cell death ligands (PD-L1/PD-L2) may sustain tumour immune-evasion. Patients featuring MET amplification, a genetic lesion driving transformation, may benefit from anti-MET treatment. We explored if MET-targeted therapy interferes with Interferon-γ modulation of PD-L1/PD-L2 in MET-amplified tumours. METHODS PD-L1/PD-L2 expression and signalling pathways downstream of MET or Interferon-γ were analysed in MET-amplified tumour cell lines and in patient-derived tumour organoids, in basal condition, upon Interferon-γ stimulation, and after anti-MET therapy. RESULTS PD-L1 and PD-L2 were upregulated in MET-amplified tumour cells upon Interferon-γ treatment. This induction was impaired by JNJ-605, a selective inhibitor of MET kinase activity, and MvDN30, an antibody inducing MET proteolytic cleavage. We found that activation of JAKs/ STAT1, signal transducers downstream of the Interferon-γ receptor, was neutralised by MET inhibitors. Moreover, JAK2 and MET associated in the same signalling complex depending on MET phosphorylation. Results were confirmed in MET-amplified organoids derived from human colorectal tumours, where JNJ-605 treatment revoked Interferon-γ induced PD-L1 expression. CONCLUSIONS These data show that in MET-amplified cancers, treatment with MET inhibitors counteracts the induction of PD-1 ligands by Interferon-γ. Thus, therapeutic use of anti-MET drugs may provide additional clinical benefit over and above the intended inhibition of the target oncogene.
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Affiliation(s)
- Valentina Martin
- Medical Oncology Division, Experimental Cell Therapy, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
| | - Cristina Chiriaco
- Laboratory of Gene Transfer, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
| | - Chiara Modica
- Department of Oncology, University of Torino, Candiolo, Torino, Italy
- Laboratory of Molecular Therapeutics and Exploratory Research, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
| | - Anna Acquadro
- Medical Oncology Division, Experimental Cell Therapy, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
- Department of Oncology, University of Torino, Candiolo, Torino, Italy
| | - Marco Cortese
- Laboratory of Gene Transfer, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
- Department of Oncology, University of Torino, Candiolo, Torino, Italy
| | - Francesco Galimi
- Laboratory of Translational Cancer Medicine, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
| | | | - Loretta Gammaitoni
- Medical Oncology Division, Experimental Cell Therapy, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
| | - Massimo Aglietta
- Medical Oncology Division, Experimental Cell Therapy, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
- Department of Oncology, University of Torino, Candiolo, Torino, Italy
| | - Paolo M Comoglio
- Laboratory of Molecular Therapeutics and Exploratory Research, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
| | - Elisa Vigna
- Laboratory of Gene Transfer, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy.
- Department of Oncology, University of Torino, Candiolo, Torino, Italy.
| | - Dario Sangiolo
- Medical Oncology Division, Experimental Cell Therapy, Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Torino, Italy
- Department of Oncology, University of Torino, Candiolo, Torino, Italy
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7
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Miranda O, Farooqui M, Siegfried JM. Status of Agents Targeting the HGF/c-Met Axis in Lung Cancer. Cancers (Basel) 2018; 10:cancers10090280. [PMID: 30134579 PMCID: PMC6162713 DOI: 10.3390/cancers10090280] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/10/2018] [Accepted: 08/13/2018] [Indexed: 12/15/2022] Open
Abstract
Hepatocyte growth factor (HGF) is the ligand for the tyrosine kinase receptor c-Met (Mesenchymal Epithelial Transition Factor also known as Hepatocyte Growth Factor Receptor, HGFR), a receptor with expression throughout epithelial and endothelial cell types. Activation of c-Met enhances cell proliferation, invasion, survival, angiogenesis, and motility. The c-Met pathway also stimulates tissue repair in normal cells. A body of past research shows that increased levels of HGF and/or overexpression of c-Met are associated with poor prognosis in several solid tumors, including lung cancer, as well as cancers of the head and neck, gastro-intestinal tract, breast, ovary and cervix. The HGF/c-Met signaling network is complex; both ligand-dependent and ligand-independent signaling occur. This article will provide an update on signaling through the HGF/c-Met axis, the mechanism of action of HGF/c-Met inhibitors, the lung cancer patient populations most likely to benefit, and possible mechanisms of resistance to these inhibitors. Although c-Met as a target in non-small cell lung cancer (NSCLC) showed promise based on preclinical data, clinical responses in NSCLC patients have been disappointing in the absence of MET mutation or MET gene amplification. New therapeutics that selectively target c-Met or HGF, or that target c-Met and a wider spectrum of interacting tyrosine kinases, will be discussed.
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Affiliation(s)
- Oshin Miranda
- Department of Pharmacology and Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Mariya Farooqui
- Department of Pharmacology and Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Jill M Siegfried
- Department of Pharmacology and Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA.
- Department of Pharmacology, University of Minnesota, 321 Church Street SE, 6-120 Jackson Hall, Minneapolis, MN 55455, USA.
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8
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Pan H, Liu J, Deng W, Xing J, Li Q, Wang Z. Site-specific PEGylation of an anti-CEA/CD3 bispecific antibody improves its antitumor efficacy. Int J Nanomedicine 2018; 13:3189-3201. [PMID: 29881272 PMCID: PMC5985803 DOI: 10.2147/ijn.s164542] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Introduction Bispecific antibodies that engage immune cells to kill cancer cells are actively pursued in cancer immunotherapy. Different types of bispecific antibodies, including single-chain fragments, Fab fragments, nanobodies, and immunoglobulin Gs (IgGs), have been studied. However, the low molecular weight of bispecific antibodies with single-chain or Fab fragments generally leads to their rapid clearance in vivo, which limits the therapeutic potential of these bispecific antibodies. Materials and methods In this study, we used a site-specific PEGylation strategy to modify the bispecific single-domain antibody-linked Fab (S-Fab), which was designed by linking an anticarcinoembryonic antigen (anti-CEA) nanobody with an anti-CD3 Fab. Results The half-life (t1/2) of PEGylated S-Fab (polyethylene glycol-S-Fab) was increased 12-fold in vivo with a slightly decreased tumor cell cytotoxicity in vitro as well as more potent tumor growth inhibition in vivo compared to S-Fab. Conclusion This study demonstrated that PEGylation is an effective approach to enhance the antitumor efficacy of bispecific antibodies.
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Affiliation(s)
- Haitao Pan
- School of Pharmaceutical Sciences.,Centre for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Jiayu Liu
- School of Pharmaceutical Sciences.,Centre for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Wentong Deng
- School of Pharmaceutical Sciences.,Centre for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Jieyu Xing
- School of Pharmaceutical Sciences.,Centre for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Qing Li
- School of Pharmaceutical Sciences.,Centre for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Zhong Wang
- School of Pharmaceutical Sciences.,Centre for Cellular & Structural Biology, Sun Yat-Sen University, Guangzhou, People's Republic of China
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9
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Warnders FJ, Lub-de Hooge MN, de Vries EGE, Kosterink JGW. Influence of protein properties and protein modification on biodistribution and tumor uptake of anticancer antibodies, antibody derivatives, and non-Ig scaffolds. Med Res Rev 2018; 38:1837-1873. [PMID: 29635825 DOI: 10.1002/med.21498] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 01/30/2018] [Accepted: 03/02/2018] [Indexed: 12/11/2022]
Abstract
Newly developed protein drugs that target tumor-associated antigens are often modified in order to increase their therapeutic effect, tumor exposure, and safety profile. During the development of protein drugs, molecular imaging is increasingly used to provide additional information on their in vivo behavior. As a result, there are increasing numbers of studies that demonstrate the effect of protein modification on whole body distribution and tumor uptake of protein drugs. However, much still remains unclear about how to interpret obtained biodistribution data correctly. Consequently, there is a need for more insight in the correct way of interpreting preclinical and clinical imaging data. Summarizing the knowledge gained to date may facilitate this interpretation. This review therefore provides an overview of specific protein properties and modifications that can affect biodistribution and tumor uptake of anticancer antibodies, antibody fragments, and nonimmunoglobulin scaffolds. Protein properties that are discussed in this review are molecular size, target interaction, FcRn binding, and charge. Protein modifications that are discussed are radiolabeling, fluorescent labeling drug conjugation, glycosylation, humanization, albumin binding, and polyethylene glycolation.
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Affiliation(s)
- Frank-Jan Warnders
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Marjolijn N Lub-de Hooge
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Elisabeth G E de Vries
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Jos G W Kosterink
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,PharmacoTherapy, Epidemiology & Economy, Groningen Research Institute of Pharmacy, University of Groningen, Groningen, The Netherlands
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10
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Cui Y, Cui P, Chen B, Li S, Guan H. Monoclonal antibodies: formulations of marketed products and recent advances in novel delivery system. Drug Dev Ind Pharm 2017; 43:519-530. [DOI: 10.1080/03639045.2017.1278768] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Yanan Cui
- School of Pharmacy, Jining Medicinal College, Jining, China
| | - Ping Cui
- Department of Epidemiology and Biostatistics, Key Laboratory of Cancer Prevention and Therapy, Tianjin, National Clinical Research Centre of Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Binlong Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Suxin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Hua Guan
- School of Pharmacy, Jining Medicinal College, Jining, China
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11
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Cignetto S, Modica C, Chiriaco C, Fontani L, Milla P, Michieli P, Comoglio PM, Vigna E. Dual Constant Domain-Fab: A novel strategy to improve half-life and potency of a Met therapeutic antibody. Mol Oncol 2016; 10:938-48. [PMID: 27103110 DOI: 10.1016/j.molonc.2016.03.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/01/2016] [Accepted: 03/20/2016] [Indexed: 12/12/2022] Open
Abstract
The kinase receptor encoded by the Met oncogene is a sensible target for cancer therapy. The chimeric monovalent Fab fragment of the DN30 monoclonal antibody (MvDN30) has an odd mechanism of action, based on cell surface removal of Met via activation of specific plasma membrane proteases. However, the short half-life of the Fab, due to its low molecular weight, is a severe limitation for the deployment in therapy. This issue was addressed by increasing the Fab molecular weight above the glomerular filtration threshold through the duplication of the constant domains, in tandem (DCD-1) or reciprocally swapped (DCD-2). The two newly engineered molecules showed biochemical properties comparable to the original MvDN30 in vitro, acting as full Met antagonists, impairing Met phosphorylation and activation of downstream signaling pathways. As a consequence, Met-mediated biological responses were inhibited, including anchorage-dependent and -independent cell growth. In vivo DCD-1 and DCD-2 showed a pharmacokinetic profile significantly improved over the original MvDN30, doubling the circulating half-life and reducing the clearance. In pre-clinical models of cancer, generated by injection of tumor cells or implant of patient-derived samples, systemic administration of the engineered molecules inhibited the growth of Met-addicted tumors.
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Affiliation(s)
- Simona Cignetto
- Candiolo Cancer Institute, FPO-IRCCS, Str Prov 142, 10060 Candiolo, Italy; University of Turin, Department of Oncology, Str Prov 142, 10060 Candiolo, Italy
| | - Chiara Modica
- Candiolo Cancer Institute, FPO-IRCCS, Str Prov 142, 10060 Candiolo, Italy; University of Turin, Department of Oncology, Str Prov 142, 10060 Candiolo, Italy
| | - Cristina Chiriaco
- Candiolo Cancer Institute, FPO-IRCCS, Str Prov 142, 10060 Candiolo, Italy
| | - Lara Fontani
- Candiolo Cancer Institute, FPO-IRCCS, Str Prov 142, 10060 Candiolo, Italy
| | - Paola Milla
- University of Turin, Department of Science and Drug Technology, Via P. Giuria 9, 10125 Turin, Italy
| | - Paolo Michieli
- Candiolo Cancer Institute, FPO-IRCCS, Str Prov 142, 10060 Candiolo, Italy; University of Turin, Department of Oncology, Str Prov 142, 10060 Candiolo, Italy
| | - Paolo M Comoglio
- Candiolo Cancer Institute, FPO-IRCCS, Str Prov 142, 10060 Candiolo, Italy; University of Turin, Department of Oncology, Str Prov 142, 10060 Candiolo, Italy.
| | - Elisa Vigna
- Candiolo Cancer Institute, FPO-IRCCS, Str Prov 142, 10060 Candiolo, Italy; University of Turin, Department of Oncology, Str Prov 142, 10060 Candiolo, Italy.
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