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Hou W, Yuan Q, Yuan X, Wang Y, Mo W, Wang H, Yu M. A novel tetravalent bispecific antibody targeting programmed death 1 and tyrosine-protein kinase Met for treatment of gastric cancer. Invest New Drugs 2018; 37:876-889. [PMID: 30511201 DOI: 10.1007/s10637-018-0689-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 10/19/2018] [Indexed: 12/19/2022]
Abstract
Background Redirecting T cells to tumor cells using bispecific antibodies (BsAbs) is emerging as a potent cancer therapy. The main concept of this strategy is to cross-link tumor cells and T cells by simultaneously binding to cell surface tumor-associated antigen (TAA) and the CD3ƹ chain. However, immune checkpoint programmed cell death ligand-1 (PD-L1) on tumor cells or other myeloid cells upreglulated remarkablely after the treatment of CD3-binding BsAbs, leads to the generation of suppressed microenvironment for immune evasion and tumor progression. Although this resistance could be partially reversed by anti-PD-L1 treatment, targeting two pathways through one antibody-based molecule may provide a strategic advantage over the combination of BsAbs and immune checkpoint inhibitors. Methods We developed two novel BsAbs PD-1/c-Met DVD-Ig and IgG-scFv both targeting PD-1 to restore the immune effector function of T cells and engaging them to tumor cells via binding to cellular-mesenchymal to epithelial transition factor (c-Met). Binding activities, T cell activation and proliferation were analyzed by flow cytometry. Cell Cytotoxicity and cytokine release were measured using LDH release assay and ELISA, respectively. Anti-tumor response in vivo was evaluated by generate xenograft models in NOD-SCID mice. Results These bispecific antibodies exhibited effective antitumor activity against high- and low- c-Met-expressing gastric cancer cell lines in vitro and mediated strong tumor growth inhibition in human gastric cancer xenograft models. Conclusion The engagement of the PD-1/PD-L1 blockade to c-Met-overexpressing cancer cells is a promising strategy for the treatment of gastric cancer and potentially other malignancies.
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Affiliation(s)
- Weihua Hou
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Fudan University, P.O. Box #238 No. 138 Yi Xue Yuan Road, Shanghai, China
| | - Qingyun Yuan
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Fudan University, P.O. Box #238 No. 138 Yi Xue Yuan Road, Shanghai, China
| | - Xingxing Yuan
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Fudan University, P.O. Box #238 No. 138 Yi Xue Yuan Road, Shanghai, China
| | - Yuxiong Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Fudan University, P.O. Box #238 No. 138 Yi Xue Yuan Road, Shanghai, China
| | - Wei Mo
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Fudan University, P.O. Box #238 No. 138 Yi Xue Yuan Road, Shanghai, China
| | - Huijie Wang
- Department of Medical Oncology, Shanghai Cancer Center, School of Basic Medicine, Fudan University, P.O. Box #238 No. 138 Yi Xue Yuan Road, Shanghai, China.
| | - Min Yu
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Fudan University, P.O. Box #238 No. 138 Yi Xue Yuan Road, Shanghai, China.
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DiCara DM, Chirgadze DY, Pope AR, Karatt-Vellatt A, Winter A, Slavny P, van den Heuvel J, Parthiban K, Holland J, Packman LC, Mavria G, Hoffmann J, Birchmeier W, Gherardi E, McCafferty J. Characterization and structural determination of a new anti-MET function-blocking antibody with binding epitope distinct from the ligand binding domain. Sci Rep 2017; 7:9000. [PMID: 28827556 PMCID: PMC5567289 DOI: 10.1038/s41598-017-09460-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 07/25/2017] [Indexed: 12/18/2022] Open
Abstract
The growth and motility factor Hepatocyte Growth Factor/Scatter Factor (HGF/SF) and its receptor, the product of the MET proto-oncogene, promote invasion and metastasis of tumor cells and have been considered potential targets for cancer therapy. We generated a new Met-blocking antibody which binds outside the ligand-binding site, and determined the crystal structure of the Fab in complex with its target, which identifies the binding site as the Met Ig1 domain. The antibody, 107_A07, inhibited HGF/SF-induced cell migration and proliferation in vitro and inhibited growth of tumor xenografts in vivo. In biochemical assays, 107_A07 competes with both HGF/SF and its truncated splice variant NK1 for MET binding, despite the location of the antibody epitope on a domain (Ig1) not reported to bind NK1 or HGF/SF. Overlay of the Fab-MET crystal structure with the InternalinB-MET crystal structure shows that the 107_A07 Fab comes into close proximity with the HGF/SF-binding SEMA domain when MET is in the “compact”, InternalinB-bound conformation, but not when MET is in the “open” conformation. These findings provide further support for the importance of the “compact” conformation of the MET extracellular domain, and the relevance of this conformation to HGF/SF binding and signaling.
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Affiliation(s)
- Danielle M DiCara
- MRC Centre, Hills Road, Cambridge, CB2 2QH, UK.,Department of Oncology, University of Cambridge, Cambridge Biomedical Campus, Cambridge, CB2 0XZ, UK.,Genentech Inc., South San Francisco, 94080, USA
| | - Dimitri Y Chirgadze
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, UK
| | - Anthony R Pope
- IONTAS Ltd, Babraham Institute, Babraham, Cambridgeshire, CB22 3AT, UK
| | | | - Anja Winter
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, UK.,Faculty of Natural Sciences, Keele University, Staffordshire, ST5 5BG, UK
| | - Peter Slavny
- IONTAS Ltd, Babraham Institute, Babraham, Cambridgeshire, CB22 3AT, UK
| | - Joop van den Heuvel
- Helmholtz Zentrum für Infektionsforschung, Inhoffenstraße 7, 38124, Braunschweig, Germany
| | - Kothai Parthiban
- IONTAS Ltd, Babraham Institute, Babraham, Cambridgeshire, CB22 3AT, UK
| | - Jane Holland
- Max Delbrueck Center for Molecular Medicine (MDC) in the Helmholtz Association, 13125, Berlin, Germany
| | - Len C Packman
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, UK
| | - Georgia Mavria
- Leeds Institute of Cancer and Pathology, University of Leeds, St James' University Hospital, Beckett Street, Leeds, LS9 7TF, UK
| | - Jens Hoffmann
- Experimental Pharmacology & Oncology Berlin-Buch GmbH, Robert-Rössle-Str. 10, 13125, Berlin-Buch, Germany
| | - Walter Birchmeier
- Max Delbrueck Center for Molecular Medicine (MDC) in the Helmholtz Association, 13125, Berlin, Germany
| | - Ermanno Gherardi
- MRC Centre, Hills Road, Cambridge, CB2 2QH, UK. .,Department of Oncology, University of Cambridge, Cambridge Biomedical Campus, Cambridge, CB2 0XZ, UK. .,Division of Immunology and General Pathology, Department of Molecular Medicine, 1 via A Ferrata, 27100, Pavia, Italy.
| | - John McCafferty
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, UK. .,IONTAS Ltd, Babraham Institute, Babraham, Cambridgeshire, CB22 3AT, UK.
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Womeldorff M, Gillespie D, Jensen RL. Hypoxia-inducible factor-1 and associated upstream and downstream proteins in the pathophysiology and management of glioblastoma. Neurosurg Focus 2015; 37:E8. [PMID: 25581937 DOI: 10.3171/2014.9.focus14496] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Glioblastoma multiforme (GBM) is a highly aggressive brain tumor with an exceptionally poor patient outcome despite aggressive therapy including surgery, radiation, and chemotherapy. This aggressive phenotype may be associated with intratumoral hypoxia, which probably plays a key role in GBM tumor growth, development, and angiogenesis. A key regulator of cellular response to hypoxia is the protein hypoxia-inducible factor–1 (HIF-1). An examination of upstream hypoxic and nonhypoxic regulation of HIF-1 as well as a review of the downstream HIF-1– regulated proteins may provide further insight into the role of this transcription factor in GBM pathophysiology. Recent insights into upstream regulators that intimately interact with HIF-1 could provide potential therapeutic targets for treatment of this tumor. The same is potentially true for HIF-1–mediated pathways of glycolysis-, angiogenesis-, and invasion-promoting proteins. Thus, an understanding of the relationship between HIF-1, its upstream protein regulators, and its downstream transcribed genes in GBM pathogenesis could provide future treatment options for the care of patients with these tumors.
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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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Hong H, Chen F, Zhang Y, Cai W. New radiotracers for imaging of vascular targets in angiogenesis-related diseases. Adv Drug Deliv Rev 2014; 76:2-20. [PMID: 25086372 DOI: 10.1016/j.addr.2014.07.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 07/14/2014] [Accepted: 07/22/2014] [Indexed: 01/03/2023]
Abstract
Tremendous advances over the last several decades in positron emission tomography (PET) and single photon emission computed tomography (SPECT) allow for targeted imaging of molecular and cellular events in the living systems. Angiogenesis, a multistep process regulated by the network of different angiogenic factors, has attracted world-wide interests, due to its pivotal role in the formation and progression of different diseases including cancer, cardiovascular diseases (CVD), and inflammation. In this review article, we will summarize the recent progress in PET or SPECT imaging of a wide variety of vascular targets in three major angiogenesis-related diseases: cancer, cardiovascular diseases, and inflammation. Faster drug development and patient stratification for a specific therapy will become possible with the facilitation of PET or SPECT imaging and it will be critical for the maximum benefit of patients.
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Liu L, Zeng W, Wortinger MA, Yan SB, Cornwell P, Peek VL, Stephens JR, Tetreault JW, Xia J, Manro JR, Credille KM, Ballard DW, Brown-Augsburger P, Wacheck V, Chow CK, Huang L, Wang Y, Denning I, Davies J, Tang Y, Vaillancourt P, Lu J. LY2875358, a neutralizing and internalizing anti-MET bivalent antibody, inhibits HGF-dependent and HGF-independent MET activation and tumor growth. Clin Cancer Res 2014; 20:6059-70. [PMID: 25231402 DOI: 10.1158/1078-0432.ccr-14-0543] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE MET, the receptor for hepatocyte growth factor (HGF), has been implicated in driving tumor proliferation and metastasis. High MET expression is correlated with poor prognosis in multiple cancers. Activation of MET can be induced either by HGF-independent mechanisms such as gene amplification, specific genetic mutations, and transcriptional upregulation or by HGF-dependent autocrine or paracrine mechanisms. EXPERIMENTAL DESIGN/RESULTS Here, we report on LY2875358, a novel humanized bivalent anti-MET antibody that has high neutralization and internalization activities, resulting in inhibition of both HGF-dependent and HGF-independent MET pathway activation and tumor growth. In contrast to other bivalent MET antibodies, LY2875358 exhibits no functional agonist activity and does not stimulate biologic activities such as cell proliferation, scattering, invasion, tubulogenesis, or apoptosis protection in various HGF-responsive cells and no evidence of inducing proliferation in vivo in a monkey toxicity study. LY2875358 blocks HGF binding to MET and HGF-induced MET phosphorylation and cell proliferation. In contrast to the humanized one-armed 5D5 anti-MET antibody, LY2875358 induces internalization and degradation of MET that inhibits cell proliferation and tumor growth in models where MET is constitutively activated. Moreover, LY2875358 has potent antitumor activity in both HGF-dependent and HGF-independent (MET-amplified) xenograft tumor models. Together, these findings indicate that the mechanism of action of LY2875358 is different from that of the one-armed MET antibody. CONCLUSIONS LY2875358 may provide a promising therapeutic strategy for patients whose tumors are driven by both HGF-dependent and HGF-independent MET activation. LY2875358 is currently being investigated in multiple clinical studies.
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Affiliation(s)
- Ling Liu
- Biotechnology Discovery Research,
| | - Wei Zeng
- Biotechnology Discovery Research
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Yong Wang
- Discovery Chemistry Research and Technologies. Lilly Research Laboratories, A Division of Eli Lilly and Company, Lilly Corporate Center, Indianapolis, Indiana
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Bhardwaj V, Cascone T, Cortez MA, Amini A, Evans J, Komaki RU, Heymach JV, Welsh JW. Modulation of c-Met signaling and cellular sensitivity to radiation: potential implications for therapy. Cancer 2013; 119:1768-75. [PMID: 23423860 DOI: 10.1002/cncr.27965] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 12/12/2012] [Accepted: 12/18/2012] [Indexed: 12/13/2022]
Abstract
The c-Met/hepatocyte growth factor receptor and its family members are known to promote cancer cell migration and invasion. Signaling within and beyond this pathway contributes to the systemic spread of metastases through induction of the epithelial-mesenchymal transition, a process also implicated in mediating resistance to current anticancer therapies, including radiation. Induction of c-Met has also been observed after irradiation, suggesting that c-Met participates in radiation-induced disease progression through the epithelial-mesenchymal transition. Therefore, c-Met inhibition is an attractive target for potentially mitigating radiation resistance. This article summarizes key findings regarding crosstalk between radiotherapy and c-Met and discusses studies performed to date in which c-Met inhibition was used as a strategy to increase cellular radiosensitivity.
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Affiliation(s)
- Vikas Bhardwaj
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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