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Maiti R, Patel B, Patel N, Patel M, Patel A, Dhanesha N. Antibody drug conjugates as targeted cancer therapy: past development, present challenges and future opportunities. Arch Pharm Res 2023; 46:361-388. [PMID: 37071273 DOI: 10.1007/s12272-023-01447-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/26/2023] [Indexed: 04/19/2023]
Abstract
Antibody drug conjugates (ADCs) are promising cancer therapeutics with minimal toxicity as compared to small cytotoxic molecules alone and have shown the evidence to overcome resistance against tumor and prevent relapse of cancer. The ADC has a potential to change the paradigm of cancer chemotherapeutic treatment. At present, 13 ADCs have been approved by USFDA for the treatment of various types of solid tumor and haematological malignancies. This review covers the three structural components of an ADC-antibody, linker, and cytotoxic payload-along with their respective structure, chemistry, mechanism of action, and influence on the activity of ADCs. It covers comprehensive insight on structural role of linker towards efficacy, stability & toxicity of ADCs, different types of linkers & various conjugation techniques. A brief overview of various analytical techniques used for the qualitative and quantitative analysis of ADC is summarized. The current challenges of ADCs, such as heterogeneity, bystander effect, protein aggregation, inefficient internalization or poor penetration into tumor cells, narrow therapeutic index, emergence of resistance, etc., are outlined along with recent advances and future opportunities for the development of more promising next-generation ADCs.
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Affiliation(s)
- Ritwik Maiti
- Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India
| | - Bhumika Patel
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India.
| | - Nrupesh Patel
- Department of Pharmaceutical Analysis, Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India
| | - Mehul Patel
- Department of Pharmaceutical Chemistry and Analysis, Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, CHARUSAT Campus, Changa, 388421, Gujarat, India
| | - Alkesh Patel
- Department of Pharmacology, Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology, CHARUSAT Campus, Changa, 388421, Gujarat, India
| | - Nirav Dhanesha
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center-Shreveport, Shreveport, LA, 71103, USA.
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Yamasaki A, Maruyama-Takahashi K, Nishida K, Okazaki S, Okita K, Akiyama Y, Suzuki H, Endo Y, Masuko K, Masuko T, Tomioka Y. CD98 regulates the phosphorylation of HER2 and a bispecific anti-HER2/CD98 antibody inhibits the growth signal of human breast cancer cells. Genes Cells 2023; 28:374-382. [PMID: 36811310 DOI: 10.1111/gtc.13016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023]
Abstract
Human epidermal growth factor receptor (HER) family proteins are currently major targets of therapeutic monoclonal antibodies against various epithelial cancers. However, the resistance of cancer cells to HER family-targeted therapies, which may be caused by cancer heterogeneity and persistent HER phosphorylation, often reduces overall therapeutic effects. We herein showed that a newly discovered molecular complex between CD98 and HER2 affected HER function and cancer cell growth. The immunoprecipitation of the HER2 or HER3 protein from lysates of SKBR3 breast cancer (BrCa) cells revealed the HER2-CD98 or HER3-CD98 complex. The knockdown of CD98 by small interfering RNAs inhibited the phosphorylation of HER2 in SKBR3 cells. A bispecific antibody (BsAb) that recognized the HER2 and CD98 proteins was constructed from a humanized anti-HER2 (SER4) IgG and an anti-CD98 (HBJ127) single chain variable fragment, and this BsAb significantly inhibited the cell growth of SKBR3 cells. Prior to the inhibition of AKT phosphorylation, BsAb inhibited the phosphorylation of HER2, however, significant inhibition of HER2 phosphorylation was not observed in anti-HER2 pertuzumab, trastuzumab, SER4 or anti-CD98 HBJ127 in SKBR3 cells. The dual targeting of HER2 and CD98 has potential as a new therapeutic strategy for BrCa.
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Affiliation(s)
- Akitaka Yamasaki
- Laboratory of Oncology Pharmacy Practice and Science, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai-shi, Japan.,Cell Biology Laboratory, Faculty of Pharmacy, Kindai University, Higashiosaka-shi, Japan
| | - Kumiko Maruyama-Takahashi
- Department of Hygienic Chemistry (April 1975-March 1994), Pharmaceutical Institute, Tohoku University, Sendai-shi, Japan
| | - Kento Nishida
- Laboratory of Oncology Pharmacy Practice and Science, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai-shi, Japan
| | - Shogo Okazaki
- Cell Biology Laboratory, Faculty of Pharmacy, Kindai University, Higashiosaka-shi, Japan.,Department of Microbiology, Division of Immunology and Pathobiology, Nihon University School of Density, Chiyoda-ku, Japan
| | - Kouki Okita
- Cell Biology Laboratory, Faculty of Pharmacy, Kindai University, Higashiosaka-shi, Japan.,Production and Manufacturing, Carna Biosciences Inc., Chuo-ku, Japan
| | - Yasutoshi Akiyama
- Laboratory of Oncology Pharmacy Practice and Science, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai-shi, Japan
| | - Hideaki Suzuki
- Department of Hygienic Chemistry (April 1975-March 1994), Pharmaceutical Institute, Tohoku University, Sendai-shi, Japan
| | - Yuichi Endo
- Laboratory of Natural Drug Resources, Faculty of Pharmacy, Kindai University, Higashiosaka-shi, Japan
| | - Kazue Masuko
- Cell Biology Laboratory, Faculty of Pharmacy, Kindai University, Higashiosaka-shi, Japan.,Department of Hygienic Chemistry (April 1975-March 1994), Pharmaceutical Institute, Tohoku University, Sendai-shi, Japan
| | - Takashi Masuko
- Cell Biology Laboratory, Faculty of Pharmacy, Kindai University, Higashiosaka-shi, Japan.,Department of Hygienic Chemistry (April 1975-March 1994), Pharmaceutical Institute, Tohoku University, Sendai-shi, Japan.,Laboratory of Natural Drug Resources, Faculty of Pharmacy, Kindai University, Higashiosaka-shi, Japan
| | - Yoshihisa Tomioka
- Laboratory of Oncology Pharmacy Practice and Science, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai-shi, Japan.,Department of Hygienic Chemistry (April 1975-March 1994), Pharmaceutical Institute, Tohoku University, Sendai-shi, Japan
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3
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Kim JR, Lee D, Kim Y, Kim JY. CD20/TNFR1 dual-targeting antibody enhances lysosome rupture-mediated cell death in B cell lymphoma. Cancer Immunol Immunother 2022; 72:1567-1580. [DOI: 10.1007/s00262-022-03344-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022]
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4
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Moiseenko F, Bogdanov A, Egorenkov V, Volkov N, Moiseyenko V. Management and Treatment of Non-small Cell Lung Cancer with MET Alteration and Mechanisms of Resistance. Curr Treat Options Oncol 2022; 23:1664-1698. [PMID: 36269457 DOI: 10.1007/s11864-022-01019-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2022] [Indexed: 01/30/2023]
Abstract
OPINION STATEMENT MET-driven tumors are a heterogenous group of non-small cell lung cancers (NSCLC) with activating mutations. Pathologic activation of MET can be achieved with increased number of gene copies overexpression, or decreased protein degradation through several mechanisms, including mutations, amplifications, or fusions. Besides its role as primary driver, MET activation might also mediate resistance to kinase inhibitors in NSCLC with various other actionable alterations. While checkpoint inhibitors have modest efficacy in MET-driven tumors, several approaches of targeted blockade are available. Among them the most promising are small tyrosine kinase inhibitors, antibody-drug conjugates, and bispecific antibodies. Unfortunately, resistance is virtually inevitable. Resistance to small kinase inhibitors might be mediated by kinase domain mutations or activation of shunting cascades. Various resistance mechanisms might be present in one patient, making it overcoming an unresolved problem.
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Affiliation(s)
- Fedor Moiseenko
- Saint-Petersburg City Cancer Center, Leningradskay 68a, Lit.A, Pesochny, St. Petersburg, 197758, Russia. .,N.N. Petrov National Medical Research Center of Oncology, Ministry of Public Health of the Russian Federation, 68, Leningradskaya st., Pesochny, St. Petersburg, 197758, Russia. .,State Budget Institution of Higher Education "North-Western State Medical University named after I.I Mechnikov" under the Ministry of Public Health of the Russian Federation, 41, Kirochnaya str, Saint Petersburg, 191015, Russia.
| | - Alexey Bogdanov
- Saint-Petersburg City Cancer Center, Leningradskay 68a, Lit.A, Pesochny, St. Petersburg, 197758, Russia
| | - Vitaliy Egorenkov
- Saint-Petersburg City Cancer Center, Leningradskay 68a, Lit.A, Pesochny, St. Petersburg, 197758, Russia
| | - Nikita Volkov
- Saint-Petersburg City Cancer Center, Leningradskay 68a, Lit.A, Pesochny, St. Petersburg, 197758, Russia
| | - Vladimir Moiseyenko
- Saint-Petersburg City Cancer Center, Leningradskay 68a, Lit.A, Pesochny, St. Petersburg, 197758, Russia
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Koba Y, Nakamoto M, Matsusaki M. Fabrication of a Polymeric Inhibitor of Proximal Metabolic Enzymes in Hypoxia for Synergistic Inhibition of Cancer Cell Proliferation, Survival, and Migration. ACS Appl Mater Interfaces 2022; 14:51790-51797. [PMID: 36375210 DOI: 10.1021/acsami.2c16454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Since conventional molecular targeted drugs often result in side effects, the development of novel molecular targeted drugs with both high efficacy and selectivity is desired. Simultaneous inhibition of metabolically and spatiotemporally related proteins/enzymes is a promising strategy for improving therapeutic interventions in cancer treatment. Herein, we report a poly-α-l-glutamate-based polymer inhibitor that simultaneously targets proximal transmembrane enzymes under hypoxia, namely, carbonic anhydrase IX (CAIX) and zinc-dependent metalloproteinases. A polymer incorporating two types of inhibitors more effectively inhibited the proliferation and migration of human breast cancer cells than a combination of two polymers functionalized exclusively with either inhibitor. Synergistic inhibition of cancer cells would occur owing to the hetero-multivalent interactions of the polymer with proximate enzymes on the cancer cell membrane. Our results highlight the potential of polymer-based cancer therapeutics.
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Affiliation(s)
- Yuki Koba
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka565-0871, Japan
| | - Masahiko Nakamoto
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka565-0871, Japan
| | - Michiya Matsusaki
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka565-0871, Japan
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6
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Xu Y, Gu L, Li Y, Zhao R, Jian H, Xie W, Liu L, Wu H, Ren F, Han Y, Lu S. Integrative genomic analysis of drug resistance in MET exon 14 skipping lung cancer using patient-derived xenograft models. Front Oncol 2022; 12:1024818. [PMID: 36338758 PMCID: PMC9634635 DOI: 10.3389/fonc.2022.1024818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 09/27/2022] [Indexed: 11/13/2022] Open
Abstract
Background Non-small cell lung cancer (NSCLC) driven by MET exon 14 skipping (METex14) occurs in 3-4% of NSCLC cases and defines a subset of patients with distinct characteristics. While MET targeted therapy has led to strong clinical results in METex14 patients, acquired drug resistance seemed to be unavoidable during treatment. Limited information is available regarding acquired resistance during MET targeted therapy, nor has there been any report on such patient-derived xenografts (PDXs) model facilitating the research. Methods We describe a patient case harboring METex14 who exhibited drug resistance after treatment with crizotinib. Subcutaneous xenografts were generated from pretreatment and post-resistance patient specimens. PDX mice were then treated with MET inhibitors (crizotinib and tepotinib) and EGFR-MET bispecific antibodies (EMB-01 and amivantamab) to evaluate their drug response in vivo. DNA and RNA sequencing analysis was performed on patient tumor specimens and matching xenografts. Results PDXs preserved most of the histological and molecular profiles of the parental tumors. Drug resistance to MET targeted therapy was confirmed in PDX models through in vivo drug analysis. Newly acquired MET D1228H mutations and EGFR amplificated were detected in patient-resistant tumor specimens. Although the mutations were not detected in the PDX, EGFR overexpression was observed in RNA sequencing analysis indicating possible off-target resistance through the EGFR bypass signaling pathway. As expected, EGFR-MET bispecific antibodies overcome drug resistant in the PDX model. Conclusions We detected a novel MET splice site deletion mutation that could lead to METex14. We also established and characterized a pair of METex14 NSCLC PDXs, including the first crizotinib resistant METex14 PDX. And dual inhibition of MET and EGFR might be a therapeutic strategy for EGFR-driven drug resistance METex14 lung cancer.
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Affiliation(s)
- Yunhua Xu
- Department of Shanghai Lung Cancer Center, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Linping Gu
- Department of Shanghai Lung Cancer Center, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yingqi Li
- GenomiCare Biotechnology (Shanghai) Co., Ltd., Shanghai, China
| | - Ruiying Zhao
- Department of Pathology, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hong Jian
- Department of Shanghai Lung Cancer Center, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Wenhui Xie
- Department of Nuclear Medicine, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Liu Liu
- Department of Nuclear Medicine, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huiwen Wu
- Department of Nutrition, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fang Ren
- EpimAb Biotherapeutics Co., Ltd., Shanghai, China
| | - Yuchen Han
- Department of Pathology, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Shun Lu, ; Yuchen Han,
| | - Shun Lu
- Department of Shanghai Lung Cancer Center, Shanghai Chest Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Shun Lu, ; Yuchen Han,
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7
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Pastwińska J, Karaś K, Karwaciak I, Ratajewski M. Targeting EGFR in melanoma - The sea of possibilities to overcome drug resistance. Biochim Biophys Acta Rev Cancer 2022; 1877:188754. [PMID: 35772580 DOI: 10.1016/j.bbcan.2022.188754] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/15/2022] [Accepted: 06/23/2022] [Indexed: 12/21/2022]
Abstract
Melanoma is considered one of the most aggressive skin cancers. It spreads and metastasizes quickly and is intrinsically resistant to most conventional chemotherapeutics, thereby presenting a challenge to researchers and clinicians searching for effective therapeutic strategies to treat patients with melanoma. The use of inhibitors of mutated serine/threonine-protein kinase B-RAF (BRAF), e.g., vemurafenib and dabrafenib, has revolutionized melanoma chemotherapy. Unfortunately, the response to these drugs lasts a limited time due to the development of acquired resistance. One of the proteins responsible for this process is epidermal growth factor receptor (EGFR). In this review, we summarize the role of EGFR signaling in the multidrug resistance of melanomas and discuss possible applications of EGFR inhibitors to overcome the development of drug resistance in melanoma cells during therapy.
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Abdus Subhan M, Torchilin VP. Advances with antibody-drug conjugates in breast cancer treatment. Eur J Pharm Biopharm 2021:S0939-6411(21)00271-X. [PMID: 34748933 DOI: 10.1016/j.ejpb.2021.10.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/21/2021] [Accepted: 10/13/2021] [Indexed: 12/21/2022]
Abstract
Antibody-drug conjugate-based therapy for treatment of cancer has attracted much attention because of its enhanced efficacy against numerous cancer types. Commonly, an ADC includes a mAb linked to a therapeutic payload. Antibody, linker and payload are the three main components of ADCs. The high specificity of antibodies is integrated with the strong potency of payloads in ADCs. ADCs with potential cytotoxic small molecules as payloads, generate antibody-mediated cancer therapy. Recently, ADCs with DNA-damaging agents have shown favor over microtubule-targeting agents as payloads. Although ADC resistance can be a barrier to effectiveness, several ADC therapies have been either approved or are in clinical trials for cancer treatment. The ADC-based treatments of breast cancers, particularly TNBC, MDR and metastatic breast cancers, have shown promise in recent years. This review discusses ADC drug designs, and developed for different types of breast cancer including TNBC, MDR and metastatic breast cancer.
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Neijssen J, Cardoso RMF, Chevalier KM, Wiegman L, Valerius T, Anderson GM, Moores SL, Schuurman J, Parren PWHI, Strohl WR, Chiu ML. Discovery of amivantamab (JNJ-61186372), a bispecific antibody targeting EGFR and MET. J Biol Chem 2021; 296:100641. [PMID: 33839159 PMCID: PMC8113745 DOI: 10.1016/j.jbc.2021.100641] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 03/04/2021] [Accepted: 04/05/2021] [Indexed: 12/25/2022] Open
Abstract
A bispecific antibody (BsAb) targeting the epidermal growth factor receptor (EGFR) and mesenchymal-epithelial transition factor (MET) pathways represents a novel approach to overcome resistance to targeted therapies in patients with non-small cell lung cancer. In this study, we sequentially screened a panel of BsAbs in a combinatorial approach to select the optimal bispecific molecule. The BsAbs were derived from different EGFR and MET parental monoclonal antibodies. Initially, molecules were screened for EGFR and MET binding on tumor cell lines and lack of agonistic activity toward MET. Hits were identified and further screened based on their potential to induce untoward cell proliferation and cross-phosphorylation of EGFR by MET via receptor colocalization in the absence of ligand. After the final step, we selected the EGFR and MET arms for the lead BsAb and added low fucose Fc engineering to generate amivantamab (JNJ-61186372). The crystal structure of the anti-MET Fab of amivantamab bound to MET was solved, and the interaction between the two molecules in atomic details was elucidated. Amivantamab antagonized the hepatocyte growth factor (HGF)-induced signaling by binding to MET Sema domain and thereby blocking HGF β-chain-Sema engagement. The amivantamab EGFR epitope was mapped to EGFR domain III and residues K443, K465, I467, and S468. Furthermore, amivantamab showed superior antitumor activity over small molecule EGFR and MET inhibitors in the HCC827-HGF in vivo model. Based on its unique mode of action, amivantamab may provide benefit to patients with malignancies associated with aberrant EGFR and MET signaling.
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Affiliation(s)
| | | | | | | | - Thomas Valerius
- Section for Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian Albrechts University and University Hospital Schleswig-Holstein, Kiel, Germany
| | - G Mark Anderson
- Janssen Research & Development, Spring House, Pennsylvania, USA
| | - Sheri L Moores
- Janssen Research & Development, Spring House, Pennsylvania, USA
| | | | | | | | - Mark L Chiu
- Janssen Research & Development, Spring House, Pennsylvania, USA.
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Yao HP, Tong XM, Wang MH. Pharmaceutical strategies in the emerging era of antibody-based biotherapeutics for the treatment of cancers overexpressing MET receptor tyrosine kinase. Drug Discov Today 2021; 26:106-21. [PMID: 33171292 DOI: 10.1016/j.drudis.2020.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 09/23/2020] [Accepted: 11/03/2020] [Indexed: 12/26/2022]
Abstract
Pharmaceutical innovation in the development of novel antibody-based biotherapeutics with increased therapeutic indexes makes MET-targeted cancer therapy a clinical reality.
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Kim HJ, Gong MK, Yoon CY, Kang J, Yun M, Cho NH, Rha SY, Choi YD. Synergistic Antitumor Effects of Combined Treatment with HSP90 Inhibitor and PI3K/mTOR Dual Inhibitor in Cisplatin-Resistant Human Bladder Cancer Cells. Yonsei Med J 2020; 61:587-596. [PMID: 32608202 PMCID: PMC7329736 DOI: 10.3349/ymj.2020.61.7.587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/14/2020] [Accepted: 05/21/2020] [Indexed: 01/21/2023] Open
Abstract
PURPOSE The current study aimed to investigate the synergistic antitumor effect of combined treatment with 17-DMAG (HSP90 inhibitor) and NVP-BEZ235 (PI3K/mTOR dual inhibitor) on cisplatin-resistant human bladder cancer cells. MATERIALS AND METHODS Human bladder cancer cells exhibiting cisplatin resistance (T24R2) were exposed to escalating doses of 17-DMAG (2.5-20 nM) with or without NVP-BEZ236 (0.5-4 μM) in combination with cisplatin. Antitumor effects were assessed by CCK-8 analysis. Based on the dose-response study, synergistic interactions between the two regimens were evaluated using clonogenic assay and combination index values. Flow cytometry and Western blot were conducted to analyze mechanisms of synergism. RESULTS Dose- and time-dependent antitumor effects for 17-DMAG were observed in both cisplatin-sensitive (T24) and cisplatin-resistant cells (T24R2). The antitumor effect of NVP-BEZ235, however, was found to be self-limiting. The combination of 17-DMAG and NVP-BEZ235 in a 1:200 fixed ratio showed a significant antitumor effect in cisplatin-resistant bladder cancer cells over a wide dose range, and clonogenic assay showed compatible results with synergy tests. Three-dimensional analysis revealed strong synergy between the two drugs with a synergy volume of 201.84 μM/mL²%. The combination therapy resulted in G1-phase cell cycle arrest and caspase-dependent apoptosis confirmed by the Western blot. CONCLUSION HSP90 inhibitor monotherapy and in combination with the PI3K/mTOR survival pathway inhibitor NVP-BEZ235 shows a synergistic antitumor effect in cisplatin-resistant bladder cancers, eliciting cell cycle arrest at the G1 phase and induction of caspase-dependent apoptotic pathway.
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Affiliation(s)
- Hyung Joon Kim
- Department of Urology, Myunggok Medical Research Institute, Konyang University College of Medicine, Daejeon, Korea
- Department of Medicine, Graduate School of Yonsei University College of Medicine, Seoul, Korea
| | - Mi Kyung Gong
- School of Dentistry, Pusan National University, Yangsan, Korea
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Cheol Yong Yoon
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Jaeku Kang
- Department of Pharmacology, College of Medicine, Konyang University, Daejeon, Korea
| | - Mijin Yun
- Department of Medicine, Graduate School of Yonsei University College of Medicine, Seoul, Korea
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Nam Hoon Cho
- Department of Medicine, Graduate School of Yonsei University College of Medicine, Seoul, Korea
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Sun Young Rha
- Department of Medicine, Graduate School of Yonsei University College of Medicine, Seoul, Korea
- Division of Medical Oncology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Young Deuk Choi
- Department of Medicine, Graduate School of Yonsei University College of Medicine, Seoul, Korea
- Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea.
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Andres F, Iamele L, Meyer T, Stüber JC, Kast F, Gherardi E, Niemann HH, Plückthun A. Inhibition of the MET Kinase Activity and Cell Growth in MET-Addicted Cancer Cells by Bi-Paratopic Linking. J Mol Biol 2019; 431:2020-2039. [PMID: 30930049 DOI: 10.1016/j.jmb.2019.03.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 03/19/2019] [Accepted: 03/21/2019] [Indexed: 12/30/2022]
Abstract
MET, the product of the c-MET proto-oncogene, and its ligand hepatocyte growth factor/scatter factor (HGF/SF) control survival, proliferation and migration during development and tissue regeneration. HGF/SF-MET signaling is equally crucial for growth and metastasis of a variety of human tumors, but resistance to small-molecule inhibitors of MET kinase develops rapidly and therapeutic antibody targeting remains challenging. We made use of the designed ankyrin repeat protein (DARPin) technology to develop an alternative approach for inhibiting MET. We generated a collection of MET-binding DARPins covering epitopes in the extracellular MET domains and created comprehensive sets of bi-paratopic fusion proteins. This new class of molecules efficiently inhibited MET kinase activity and downstream signaling, caused receptor downregulation and strongly inhibited the proliferation of MET-dependent gastric carcinoma cells carrying MET locus amplifications. MET-specific bi-paratopic DARPins may represent a novel and potent strategy for therapeutic targeting of MET and other receptors, and this study has elucidated their mode of action.
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Affiliation(s)
- Fabio Andres
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Luisa Iamele
- Department of Molecular Medicine, University of Pavia, Italy
| | - Timo Meyer
- Department of Chemistry, Bielefeld University, Germany
| | - Jakob C Stüber
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Florian Kast
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | | | | | - Andreas Plückthun
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
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Maruani A. Bispecifics and antibody-drug conjugates: A positive synergy. Drug Discov Today Technol 2018; 30:55-61. [PMID: 30553521 DOI: 10.1016/j.ddtec.2018.09.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/18/2018] [Accepted: 09/18/2018] [Indexed: 06/09/2023]
Abstract
Bispecific antibodies (BsAbs) are antibodies with two different paratopes. In the past decade, advances in protein engineering have enabled the development of more than 100 formats of BsAbs. With two BsAbs approved for therapeutic use and more than 60 in clinical trials, this research area has shifted from being effervescent to being a mainstream therapeutic development topic. In parallel, recent progress in protein conjugation and cytotoxicity of small molecule drugs has resulted in a boom in monospecific antibody therapeutics development such as antibody-drug conjugates (ADCs). Recent examples have demonstrated how BsAbs approaches can be used to generate ADCs with better efficacy and safety profile. Rather than examining these two different yet similar areas independently, this minireview will explore the potential synergies that can exist between them.
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Affiliation(s)
- Antoine Maruani
- Department of Chemistry, University College London, London, United Kingdom.
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Fu Y, Ho M. DNA damaging agent-based antibody-drug conjugates for cancer therapy. Antib Ther 2018; 1:33-43. [PMID: 30294716 DOI: 10.1093/abt/tby007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/15/2018] [Accepted: 08/27/2018] [Indexed: 01/02/2023] Open
Abstract
Currently, four antibody-drug conjugates (ADCs) are approved by the Food and Drug Administration or the European Medicine Agency to treat cancer patients. More than 60 ADCs are in clinical development for cancer therapy. More than 60% of ADCs in clinical trials employ microtubule inhibitors as their payloads. A better understanding of payloads other than microtubule inhibitors, especially DNA-damaging agents, is important for further development of ADCs. In this review, we highlight an emerging trend of using DNA-damaging agents as payloads for ADCs. This review summarizes recent advances in our understanding gained from ongoing clinical studies; it will help to define the utility of DNA-damaging payloads for ADCs as cancer therapeutics. Future directions of the development of ADCs are also discussed, focusing on targeting drug resistance and combination treatment with immunotherapy.
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Affiliation(s)
- Ying Fu
- Laboratory of Molecular Biology, National Cancer Institute, Bethesda, MD, USA
| | - Mitchell Ho
- Laboratory of Molecular Biology, National Cancer Institute, Bethesda, MD, USA
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15
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Patnaik A, Gordon M, Tsai F, Papadopoulos KP, Rasco D, Beeram M, Fu S, Janku F, Hynes SM, Gundala SR, Willard MD, Zhang W, Lin AB, Hong D. A phase I study of LY3164530, a bispecific antibody targeting MET and EGFR, in patients with advanced or metastatic cancer. Cancer Chemother Pharmacol 2018; 82:407-418. [PMID: 29926131 PMCID: PMC6105165 DOI: 10.1007/s00280-018-3623-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 06/12/2018] [Indexed: 01/14/2023]
Abstract
PURPOSE The phase I study characterized the safety, pharmacokinetics, anti-tumor activity, and recommended phase II dose/schedule of LY3164530 in patients with advanced or metastatic cancer. METHODS Patients received LY3164530 on days 1 and 15 (Schedule 1: 300, 600, 1000, and 1250 mg) or Days 1, 8, 15, and 22 (Schedule 2: 500 and 600 mg) of each 28 days cycle. Dose escalation used a modified toxicity probability interval model. RESULTS Dose escalation defined a maximum tolerated dose (MTD) of 1000 mg on Schedule 1 and 500 mg on Schedule 2. Treatment-emergent adverse events related to study treatment were consistent with epidermal growth factor receptor (EGFR) inhibition and included maculopapular rash/dermatitis acneiform (83%, Grade 3/4 17%), hypomagnesemia (55%, Grade 3/4 7%), paronychia (35%), fatigue (28%, Grade 3/4 3%), skin fissures (24%), and hypokalemia (21%, Grade 3/4 7%). Partial response was achieved in three patients on Schedule 2 with colorectal cancer (n = 2) or squamous cell cancer. Overall response rate (ORR) was 10.3%, disease control rate (ORR + stable disease [SD]) was 51.7 and 17.2% of patients had SD ≥ 4 months. The in vivo stability of the bispecific antibody was confirmed. Schedule 2 provided greater and more consistent inhibition of mesenchymal-epithelial transition (MET)/EGFR throughout the dosing interval than Schedule 1. CONCLUSIONS Although this study defined the LY3164530 MTD and pharmacokinetics on both schedules, significant toxicities associated with EGFR inhibition and lack of a potential predictive biomarker limit future development. Nonetheless, the results provide insight into the development of bispecific antibody therapy.
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Affiliation(s)
- Amita Patnaik
- South Texas Accelerated Research Therapeutics (START), 4383 Medical Drive, Suite 4026, San Antonio, TX, USA.
| | | | - Frank Tsai
- HonorHealth Research Institute, Scottsdale, AZ, USA
| | - Kyriakos P Papadopoulos
- South Texas Accelerated Research Therapeutics (START), 4383 Medical Drive, Suite 4026, San Antonio, TX, USA
| | - Drew Rasco
- South Texas Accelerated Research Therapeutics (START), 4383 Medical Drive, Suite 4026, San Antonio, TX, USA
| | - Muralidhar Beeram
- South Texas Accelerated Research Therapeutics (START), 4383 Medical Drive, Suite 4026, San Antonio, TX, USA
| | - Siqing Fu
- Cancer Medicine Division, MD Anderson Cancer Center, The University of Texas, Houston, TX, USA
| | - Filip Janku
- Cancer Medicine Division, MD Anderson Cancer Center, The University of Texas, Houston, TX, USA
| | | | | | | | - Wei Zhang
- Eli Lilly and Company, Indianapolis, IN, USA
| | | | - David Hong
- Cancer Medicine Division, MD Anderson Cancer Center, The University of Texas, Houston, TX, USA
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16
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McKnight BN, Kuda-Wedagedara ANW, Sevak KK, Abdel-Atti D, Wiesend WN, Ku A, Selvakumar D, Carlin SD, Lewis JS, Viola-Villegas NT. Imaging EGFR and HER3 through 89Zr-labeled MEHD7945A (Duligotuzumab). Sci Rep 2018; 8:9043. [PMID: 29899472 PMCID: PMC5998059 DOI: 10.1038/s41598-018-27454-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 06/04/2018] [Indexed: 02/07/2023] Open
Abstract
Tumor resistance to treatment paved the way toward the development of single agent drugs that target multiple molecular signatures amplified within the malignancy. The discovered crosstalk between EGFR and HER3 as well as the role of HER3 in mediating EGFR resistance made these two receptor tyrosine kinases attractive targets. MEHD7945A or duligotuzumab is a single immunotherapy agent that dually targets both molecular signatures. In this study, a positron emission tomography (PET) companion diagnostic to MEHD7945A is reported and evaluated in pancreatic cancer. Tumor accretion and whole body pharmacokinetics of 89Zr-MEHD7945A were established. Specificity of the probe for EGFR and/or HER3 was further examined.
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Affiliation(s)
- Brooke N McKnight
- Department of Oncology, Karmanos Cancer Institute, 4100 John R. Street, Detroit, MI, 48201, USA
| | | | - Kuntal K Sevak
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Dalya Abdel-Atti
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Wendy N Wiesend
- Department of Anatomic Pathology, Beaumont Hospital, 3601 West 13 Mile Road, Royal Oak, MI, 48073, USA
| | - Anson Ku
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | | | - Sean D Carlin
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
| | - Jason S Lewis
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
- Program in Molecular Pharmacology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA
- Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10065, USA
| | - Nerissa T Viola-Villegas
- Department of Oncology, Karmanos Cancer Institute, 4100 John R. Street, Detroit, MI, 48201, USA.
- Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
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17
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Al-Saad S, Richardsen E, Kilvaer TK, Donnem T, Andersen S, Khanehkenari M, Bremnes RM, Busund LT. The impact of MET, IGF-1, IGF1R expression and EGFR mutations on survival of patients with non-small-cell lung cancer. PLoS One 2017; 12:e0181527. [PMID: 28742836 PMCID: PMC5526580 DOI: 10.1371/journal.pone.0181527] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 07/03/2017] [Indexed: 01/10/2023] Open
Abstract
Introduction To compare the efficacy of silver in situ hybridization (SISH) and immunohistochemistry (IHC) in detecting MET and IGF1R alterations and to investigate their prevalence and prognostic significance. A possible correlation between MET receptor expression, MET gene alterations and the two most frequent occurring EGFR gene mutations was also investigated. Materials and methods Stage I to IIIA tumors from 326 patients with NSCLC were immunohistochemically tested for protein expression of MET and IGF-1. Their cytoplasmic expression was compared with the gene copy number of the MET and IGF1Rgenes by SISH in paraffin-embedded, formalin-fixed material. Correlations were made with the immunohistochemical expression of two frequent EGFR mutations and clinicopathological variables. Univariate and multivariate survival analyses was used to evaluate the prognostic efficacy of the tested markers. Results In univariate analyses, high cytoplasmic MET expression showed a significant negative prognostic effect in adenocarcinoma patients (p = 0.026). MET gene to chromosome 7 ratio was a significant positive prognostic marker (p = 0.005), probably only due to the highly negative prognostic significance of chromosome 7 polysomy (p = 0.002). High IGF1R gene copy number was a negative prognostic marker for all NSCLC patients (p = 0.037). In the multivariate analysis, polysomy of chromosome 7 in tumor cells correlated significantly and independently with a poor prognosis (p = 0.011). In patients with adenocarcinoma, a high cytoplasmic MET expression was an independent negative prognostic marker (p = 0.013). In males a high IGF1R gene copy number to chromosome 15 count ratio was significantly and independently correlated to a poor prognosis (p = 0.018). Conclusion MET protein expression provides superior prognostic information compared with SISH. Polysomy of chromosome 7 is an independent negative prognostic factor in NSCLC patients. This finding has an important implication while examining genes located on chromosome 7 by means of SISH. High IGF1R gene copy number to chromosome 15 count ratio is an independent predictor of inferior survival in male patients with primary NSCLC.
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Affiliation(s)
- Samer Al-Saad
- Institute of Medical Biology, UiT The Arctic University of Norway, Tromso, Norway
- Department of Clinical Pathology, University Hospital of Northern Norway, Tromso, Norway
- * E-mail:
| | - Elin Richardsen
- Institute of Medical Biology, UiT The Arctic University of Norway, Tromso, Norway
- Department of Clinical Pathology, University Hospital of Northern Norway, Tromso, Norway
| | - Thomas K. Kilvaer
- Institute of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
- Department of Oncology, University Hospital of Northern Norway, Tromso, Norway
| | - Tom Donnem
- Institute of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
- Department of Oncology, University Hospital of Northern Norway, Tromso, Norway
| | - Sigve Andersen
- Institute of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
- Department of Oncology, University Hospital of Northern Norway, Tromso, Norway
| | - Mehrdad Khanehkenari
- Institute of Medical Biology, UiT The Arctic University of Norway, Tromso, Norway
| | - Roy M. Bremnes
- Institute of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
- Department of Oncology, University Hospital of Northern Norway, Tromso, Norway
| | - Lill-Tove Busund
- Institute of Medical Biology, UiT The Arctic University of Norway, Tromso, Norway
- Department of Clinical Pathology, University Hospital of Northern Norway, Tromso, Norway
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18
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Luo H, England CG, Goel S, Graves SA, Ai F, Liu B, Theuer CP, Wong HC, Nickles RJ, Cai W. ImmunoPET and Near-Infrared Fluorescence Imaging of Pancreatic Cancer with a Dual-Labeled Bispecific Antibody Fragment. Mol Pharm 2017; 14:1646-1655. [PMID: 28292180 DOI: 10.1021/acs.molpharmaceut.6b01123] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dual-targeted imaging agents have shown improved targeting efficiencies in comparison to single-targeted entities. The purpose of this study was to quantitatively assess the tumor accumulation of a dual-labeled heterobifunctional imaging agent, targeting two overexpressed biomarkers in pancreatic cancer, using positron emission tomography (PET) and near-infrared fluorescence (NIRF) imaging modalities. A bispecific immunoconjugate (heterodimer) of CD105 and tissue factor (TF) Fab' antibody fragments was developed using click chemistry. The heterodimer was dual-labeled with a radionuclide (64Cu) and fluorescent dye. PET/NIRF imaging and biodistribution studies were performed in four-to-five week old nude athymic mice bearing BxPC-3 (CD105/TF+/+) or PANC-1 (CD105/TF-/-) tumor xenografts. A blocking study was conducted to investigate the specificity of the tracer. Ex vivo tissue staining was performed to compare TF/CD105 expression in tissues with PET tracer uptake to validate in vivo results. PET imaging of 64Cu-NOTA-heterodimer-ZW800 in BxPC-3 tumor xenografts revealed enhanced tumor uptake (21.0 ± 3.4%ID/g; n = 4) compared to the homodimer of TRC-105 (9.6 ± 2.0%ID/g; n = 4; p < 0.01) and ALT-836 (7.6 ± 3.7%ID/g; n = 4; p < 0.01) at 24 h postinjection. Blocking studies revealed that tracer uptake in BxPC-3 tumors could be decreased by 4-fold with TF blocking and 2-fold with CD105 blocking. In the negative model (PANC-1), heterodimer uptake was significantly lower than that found in the BxPC-3 model (3.5 ± 1.1%ID/g; n = 4; p < 0.01). The specificity was confirmed by the successful blocking of CD105 or TF, which demonstrated that the dual targeting with 64Cu-NOTA-heterodimer-ZW800 provided an improvement in overall tumor accumulation. Also, fluorescence imaging validated the PET imaging, allowing for clear delineation of the xenograft tumors. Dual-labeled heterodimeric imaging agents, like 64Cu-NOTA-heterodimer-ZW800, may increase the overall tumor accumulation in comparison to single-targeted homodimers, leading to improved imaging of cancer and other related diseases.
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Affiliation(s)
- Haiming Luo
- Department of Radiology, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Christopher G England
- Department of Medical Physics, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Shreya Goel
- Materials Science Program, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Stephen A Graves
- Department of Medical Physics, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Fanrong Ai
- Department of Radiology, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Bai Liu
- Altor BioScience Corporation , Miramar, Florida 33025, United States
| | - Charles P Theuer
- TRACON Pharmaceuticals Incorporation , San Diego, California 92122, United States
| | - Hing C Wong
- Altor BioScience Corporation , Miramar, Florida 33025, United States
| | - Robert J Nickles
- Department of Medical Physics, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States
| | - Weibo Cai
- Department of Radiology, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States.,Department of Medical Physics, University of Wisconsin-Madison , Madison, Wisconsin 53705, United States.,Materials Science Program, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States.,University of Wisconsin Carbone Cancer Center , Madison, Wisconsin 53705, United States
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19
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Yang F, Wen W, Qin W. Bispecific Antibodies as a Development Platform for New Concepts and Treatment Strategies. Int J Mol Sci 2016; 18:E48. [PMID: 28036020 DOI: 10.3390/ijms18010048] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/16/2016] [Accepted: 12/21/2016] [Indexed: 12/11/2022] Open
Abstract
With the development of molecular cloning technology and the deep understanding of antibody engineering, there are diverse bispecific antibody formats from which to choose to pursue the optimal biological activity and clinical purpose. The single-chain-based bispecific antibodies usually bridge tumor cells with immune cells and form an immunological synapse because of their relatively small size. Bispecific antibodies in the IgG format include asymmetric bispecific antibodies and homodimerized bispecific antibodies, all of which have an extended blood half-life and their own crystalline fragment (Fc)-mediated functions. Besides retargeting effector cells to the site of cancer, new applications were established for bispecific antibodies. Bispecific antibodies that can simultaneously bind to cell surface antigens and payloads are a very ideal delivery system for therapeutic use. Bispecific antibodies that can inhibit two correlated signaling molecules at the same time can be developed to overcome inherent or acquired resistance and to be more efficient angiogenesis inhibitors. Bispecific antibodies can also be used to treat hemophilia A by mimicking the function of factor VIII. Bispecific antibodies also have broad application prospects in bone disorders and infections and diseases of the central nervous system. The latest developments of the formats and application of bispecific antibodies will be reviewed. Furthermore, the challenges and perspectives are summarized in this review.
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20
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Sellmann C, Doerner A, Knuehl C, Rasche N, Sood V, Krah S, Rhiel L, Messemer A, Wesolowski J, Schuette M, Becker S, Toleikis L, Kolmar H, Hock B. Balancing Selectivity and Efficacy of Bispecific Epidermal Growth Factor Receptor (EGFR) × c-MET Antibodies and Antibody-Drug Conjugates. J Biol Chem 2016; 291:25106-25119. [PMID: 27694443 DOI: 10.1074/jbc.m116.753491] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/22/2016] [Indexed: 01/29/2023] Open
Abstract
Bispecific antibodies (bsAbs) and antibody-drug conjugates (ADCs) have already demonstrated benefits for the treatment of cancer in several clinical studies, showing improved drug selectivity and efficacy. In particular, simultaneous targeting of prominent cancer antigens, such as EGF receptor (EGFR) and c-MET, by bsAbs has raised increasing interest for potentially circumventing receptor cross-talk and c-MET-mediated acquired resistance during anti-EGFR monotherapy. In this study, we combined the selectivity of EGFR × c-MET bsAbs with the potency of cytotoxic agents via bispecific antibody-toxin conjugation. Affinity-attenuated bispecific EGFR × c-MET antibody-drug conjugates demonstrated high in vitro selectivity toward tumor cells overexpressing both antigens and potent anti-tumor efficacy. Due to basal EGFR expression in the skin, ADCs targeting EGFR in general warrant early safety assessments. Reduction in EGFR affinity led to decreased toxicity in keratinocytes. Thus, the combination of bsAb affinity engineering with the concept of toxin conjugation may be a viable route to improve the safety profile of ADCs targeting ubiquitously expressed antigens.
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Affiliation(s)
- Carolin Sellmann
- From the Institute for Organic Chemistry and Biochemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 4, D-64287 Darmstadt, Germany.,Protein Engineering and Antibody Technologies and
| | | | - Christine Knuehl
- Merck Research and Development, Merck KGaA, Frankfurter Strasse 250, D-64293 Darmstadt, Germany, and
| | | | - Vanita Sood
- the EMD Serono Research and Development Institute, Billerica, Massachusetts 01821
| | - Simon Krah
- From the Institute for Organic Chemistry and Biochemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 4, D-64287 Darmstadt, Germany.,Protein Engineering and Antibody Technologies and
| | - Laura Rhiel
- Protein Engineering and Antibody Technologies and
| | - Annika Messemer
- From the Institute for Organic Chemistry and Biochemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 4, D-64287 Darmstadt, Germany
| | - John Wesolowski
- the EMD Serono Research and Development Institute, Billerica, Massachusetts 01821
| | | | | | | | - Harald Kolmar
- From the Institute for Organic Chemistry and Biochemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 4, D-64287 Darmstadt, Germany,
| | - Bjoern Hock
- Protein Engineering and Antibody Technologies and
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