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Peralta S, Katt W, Balkman C, Butler S, Carney P, Todd-Donato A, Drozd M, Duhamel G, Fiani N, Ford J, Grenier J, Hayward J, Heikinheimo K, Hume K, Moore E, Puri R, Sylvester S, Warshaw S, Webb S, White A, Wright A, Cerione R. Opportunities for targeted therapies: trametinib as a therapeutic approach to canine oral squamous cell carcinomas. RESEARCH SQUARE 2024:rs.3.rs-4289451. [PMID: 38746473 PMCID: PMC11092801 DOI: 10.21203/rs.3.rs-4289451/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Oral tumors are relatively common in dogs, and canine oral squamous cell carcinoma (COSCC) is the most prevalent oral malignancy of epithelial origin. COSCC is locally aggressive with up to 20% of patients showing regional or distant metastasis at the time of diagnosis. The treatment of choice most typically involves wide surgical excision. Although long-term remission is possible, treatments are associated with significant morbidity and can negatively impact functionality and quality of life. OSCCs have significant upregulation of the RAS-RAF-MEK-MAPK signaling axis, and we had previously hypothesized that small-molecule inhibitors that target RAS signaling might effectively inhibit tumor growth and progression. Here, we demonstrate that the MEK inhibitor trametinib, an FDA-approved drug for human cancers, significantly blocks the growth of several COSCC cell lines established from current patient tumor samples. We further show clinical evidence that the drug is able to cause significant tumor regression in some patients with spontaneously occurring COSCC. Given the limited treatment options available and the high rate of owner rejection of these offered options, these findings provide new hope that more acceptable treatment options may soon enter the veterinary clinic.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Jennifer Grenier
- RNA Sequencing Core and Center for Reproductive Genomics. Cornell University, Ithaca, NY
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2
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El Zawily A, Vizeacoumar FS, Dahiya R, Banerjee SL, Bhanumathy KK, Elhasasna H, Hanover G, Sharpe JC, Sanchez MG, Greidanus P, Stacey RG, Moon KM, Alexandrov I, Himanen JP, Nikolov DB, Fonge H, White AP, Foster LJ, Wang B, Toosi BM, Bisson N, Mirzabekov TA, Vizeacoumar FJ, Freywald A. A Multipronged Unbiased Strategy Guides the Development of an Anti-EGFR/EPHA2-Bispecific Antibody for Combination Cancer Therapy. Clin Cancer Res 2023; 29:2686-2701. [PMID: 36976175 PMCID: PMC10345963 DOI: 10.1158/1078-0432.ccr-22-2535] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 12/26/2022] [Accepted: 03/01/2023] [Indexed: 03/29/2023]
Abstract
PURPOSE Accumulating analyses of pro-oncogenic molecular mechanisms triggered a rapid development of targeted cancer therapies. Although many of these treatments produce impressive initial responses, eventual resistance onset is practically unavoidable. One of the main approaches for preventing this refractory condition relies on the implementation of combination therapies. This includes dual-specificity reagents that affect both of their targets with a high level of selectivity. Unfortunately, selection of target combinations for these treatments is often confounded by limitations in our understanding of tumor biology. Here, we describe and validate a multipronged unbiased strategy for predicting optimal co-targets for bispecific therapeutics. EXPERIMENTAL DESIGN Our strategy integrates ex vivo genome-wide loss-of-function screening, BioID interactome profiling, and gene expression analysis of patient data to identify the best fit co-targets. Final validation of selected target combinations is done in tumorsphere cultures and xenograft models. RESULTS Integration of our experimental approaches unambiguously pointed toward EGFR and EPHA2 tyrosine kinase receptors as molecules of choice for co-targeting in multiple tumor types. Following this lead, we generated a human bispecific anti-EGFR/EPHA2 antibody that, as predicted, very effectively suppresses tumor growth compared with its prototype anti-EGFR therapeutic antibody, cetuximab. CONCLUSIONS Our work not only presents a new bispecific antibody with a high potential for being developed into clinically relevant biologics, but more importantly, successfully validates a novel unbiased strategy for selecting biologically optimal target combinations. This is of a significant translational relevance, as such multifaceted unbiased approaches are likely to augment the development of effective combination therapies for cancer treatment. See related commentary by Kumar, p. 2570.
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Affiliation(s)
- Amr El Zawily
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
- Department of Biology, College of Liberal Arts and Sciences, University of Iowa, Iowa City, Iowa
| | - Frederick S. Vizeacoumar
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
| | - Renuka Dahiya
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
| | - Sara L. Banerjee
- Department of Molecular Biology, Medical Biochemistry and Pathology, PROTEO and Centre de recherche du Centre Hospitalier Universitaire (CHU) de Quebec-Université Laval, Division Oncologie, Québec, Canada
| | - Kalpana K. Bhanumathy
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
| | - Hussain Elhasasna
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
| | - Glinton Hanover
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Health Sciences, Saskatoon, Saskatchewan, Canada
| | - Jessica C. Sharpe
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Malkon G. Sanchez
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Health Sciences, Saskatoon, Saskatchewan, Canada
| | - Paul Greidanus
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Health Sciences, Saskatoon, Saskatchewan, Canada
| | - R. Greg Stacey
- Michael Smith Laboratories and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Kyung-Mee Moon
- Michael Smith Laboratories and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Juha P. Himanen
- Department of Biochemistry, University of Turku, Turku, Finland
| | - Dimitar B. Nikolov
- Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Humphrey Fonge
- Department of Medical Imaging, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Department of Medical Imaging, Royal University Hospital, Saskatoon, Saskatchewan, Canada
| | - Aaron P. White
- Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Health Sciences, Saskatoon, Saskatchewan, Canada
- Vaccine and Infectious Disease Organization-International Vaccine Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Leonard J. Foster
- Michael Smith Laboratories and Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Bingcheng Wang
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, and Case Western Reserve University School of Medicine, Case Comprehensive Cancer Center, Cleveland, Ohio
| | - Behzad M. Toosi
- Department of Small Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Nicolas Bisson
- Department of Molecular Biology, Medical Biochemistry and Pathology, PROTEO and Centre de recherche du Centre Hospitalier Universitaire (CHU) de Quebec-Université Laval, Division Oncologie, Québec, Canada
| | | | - Franco J. Vizeacoumar
- Cancer Research, Saskatchewan Cancer Agency and Division of Oncology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Andrew Freywald
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Royal University Hospital, Saskatoon, Saskatchewan, Canada
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Combination of T cell-redirecting bispecific antibody ERY974 and chemotherapy reciprocally enhances efficacy against non-inflamed tumours. Nat Commun 2022; 13:5265. [PMID: 36071036 PMCID: PMC9452528 DOI: 10.1038/s41467-022-32952-3] [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: 03/17/2021] [Accepted: 08/25/2022] [Indexed: 11/08/2022] Open
Abstract
Identifying a strategy with strong efficacy against non-inflamed tumours is vital in cancer immune therapy. ERY974 is a humanized IgG4 bispecific T cell-redirecting antibody that recognizes glypican-3 and CD3. Here we examine the combination effect of ERY974 and chemotherapy (paclitaxel, cisplatin, and capecitabine) in the treatment of non-inflamed tumours in a xenograft model. ERY974 monotherapy shows a minor antitumour effect on non-inflamed NCI-H446 xenografted tumours, as infiltration of ERY974-redirected T cells is limited to the tumour-stromal boundary. However, combination therapy improves efficacy by promoting T cell infiltration into the tumour centre, and increasing ERY974 distribution in the tumour. ERY974 increases capecitabine-induced cytotoxicity by promoting capecitabine conversion to its active form by inducing thymidine phosphorylase expression in non-inflamed MKN45 tumour through ERY974-induced IFNγ and TNFα in T cells. We show that ERY974 with chemotherapy synergistically and reciprocally increases antitumour efficacy, eradicating non-inflamed tumours.
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Muñoz-López P, Ribas-Aparicio RM, Becerra-Báez EI, Fraga-Pérez K, Flores-Martínez LF, Mateos-Chávez AA, Luria-Pérez R. Single-Chain Fragment Variable: Recent Progress in Cancer Diagnosis and Therapy. Cancers (Basel) 2022; 14:cancers14174206. [PMID: 36077739 PMCID: PMC9455005 DOI: 10.3390/cancers14174206] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/25/2022] [Accepted: 08/27/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Recombinant antibody fragments have shown remarkable potential as diagnostic and therapeutic tools in the fight against cancer. The single-chain fragment variable (scFv) that contains the complete antigen-binding domains of a whole antibody, has several advantages such as a high specificity and affinity for antigens, a low immunogenicity, and the proven ability to penetrate tumor tissues and diffuse. This review provides an overview of the current studies on the principle, generation, and applications of scFvs, particularly in the diagnosis and therapy of cancer, and underscores their potential use in clinical trials. Abstract Cancer remains a public health problem worldwide. Although conventional therapies have led to some excellent outcomes, some patients fail to respond to treatment, they have few therapeutic alternatives and a poor survival prognosis. Several strategies have been proposed to overcome this issue. The most recent approach is immunotherapy, particularly the use of recombinant antibodies and their derivatives, such as the single-chain fragment variable (scFv) containing the complete antigen-binding domains of a whole antibody that successfully targets tumor cells. This review describes the recent progress made with scFvs as a cancer diagnostic and therapeutic tool, with an emphasis on preclinical approaches and their potential use in clinical trials.
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Affiliation(s)
- Paola Muñoz-López
- Unit of Investigative Research on Hemato-Oncological Diseases, Hospital Infantil de México Federico Gómez, Doctor Márquez 162, Mexico City 06720, Mexico
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico
| | - Rosa María Ribas-Aparicio
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico
| | - Elayne Irene Becerra-Báez
- Unit of Investigative Research on Hemato-Oncological Diseases, Hospital Infantil de México Federico Gómez, Doctor Márquez 162, Mexico City 06720, Mexico
- Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Prolongación de Carpio y Plan de Ayala S/N, Mexico City 11340, Mexico
| | - Karla Fraga-Pérez
- Unit of Investigative Research on Hemato-Oncological Diseases, Hospital Infantil de México Federico Gómez, Doctor Márquez 162, Mexico City 06720, Mexico
| | - Luis Fernando Flores-Martínez
- Unit of Investigative Research on Hemato-Oncological Diseases, Hospital Infantil de México Federico Gómez, Doctor Márquez 162, Mexico City 06720, Mexico
| | - Armando Alfredo Mateos-Chávez
- Unit of Investigative Research on Hemato-Oncological Diseases, Hospital Infantil de México Federico Gómez, Doctor Márquez 162, Mexico City 06720, Mexico
| | - Rosendo Luria-Pérez
- Unit of Investigative Research on Hemato-Oncological Diseases, Hospital Infantil de México Federico Gómez, Doctor Márquez 162, Mexico City 06720, Mexico
- Correspondence: ; Tel.: +52-(55)-5228-9917 (ext. 4401)
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Near-Infrared Fluorescence Imaging of EGFR-Overexpressing Tumors in the Mouse Xenograft Model Using scFv-IRDye800CW and Cetuximab-IRDye800CW. Mol Imaging 2022; 2022:9589820. [PMID: 35517713 PMCID: PMC9042373 DOI: 10.1155/2022/9589820] [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: 11/13/2021] [Accepted: 03/21/2022] [Indexed: 12/18/2022] Open
Abstract
EGFR (epidermal growth factor receptor) is overexpressed in a variety of human cancers (including squamous cell carcinoma of head and neck, colon cancer, and some breast cancers) and therefore is regarded as an ideal target for cancer therapy or imaging purposes. In the current study, we produced a scFv-based near-infrared probe (called cet.Hum.scFv-IRDye-800CW) and evaluated its ability in recognizing and imaging of EGFR-overexpressing tumors in a mouse model. Like the molecular probe consisting of its parental antibody (cetuximab, an FDA-approved monoclonal antibody) and IRD800CW, cet.Hum.scFv-IRDye-800CW was able to recognize EGFR-overexpressing tumors in mice. cet.Hum.scFv-IRDye-800CW was found to be superior to the cetuximab-based probe in imaging of mouse tumors. The tumor-to-background ratio and blood clearance rate were higher when cet.Hum.scFv-IRDye-800CW was used as an imaging probe.
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Valdés-Tresanco MS, Molina-Zapata A, Pose AG, Moreno E. Structural Insights into the Design of Synthetic Nanobody Libraries. Molecules 2022; 27:molecules27072198. [PMID: 35408597 PMCID: PMC9000494 DOI: 10.3390/molecules27072198] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/22/2021] [Accepted: 12/27/2021] [Indexed: 12/27/2022] Open
Abstract
Single domain antibodies from camelids, or nanobodies, are a unique class of antibody fragments with several advantageous characteristics: small monomeric size, high stability and solubility and easy tailoring for multiple applications. Nanobodies are gaining increasing acceptance as diagnostic tools and promising therapeutic agents in cancer and other diseases. While most nanobodies are obtained from immunized animals of the camelid family, a few synthetic nanobody libraries constructed in recent years have shown the capability of generating high quality nanobodies in terms of affinity and stability. Since this synthetic approach has important advantages over the use of animals, the recent advances are indeed encouraging. Here we review over a dozen synthetic nanobody libraries reported so far and discuss the different approaches followed in their construction and validation, with an emphasis on framework and hypervariable loop design as critical issues defining their potential as high-class nanobody sources.
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Affiliation(s)
- Mario S. Valdés-Tresanco
- Faculty of Basic Sciences, University of Medellin, Medellin 050026, Colombia; (A.M.-Z.); (A.G.P.)
- Correspondence: (M.S.V.-T.); (E.M.)
| | - Andrea Molina-Zapata
- Faculty of Basic Sciences, University of Medellin, Medellin 050026, Colombia; (A.M.-Z.); (A.G.P.)
- Grupo de Micología Médica y Experimental, Corporación para Investigaciones Biológicas (CIB), Medellin 050034, Colombia
| | - Alaín González Pose
- Faculty of Basic Sciences, University of Medellin, Medellin 050026, Colombia; (A.M.-Z.); (A.G.P.)
| | - Ernesto Moreno
- Faculty of Basic Sciences, University of Medellin, Medellin 050026, Colombia; (A.M.-Z.); (A.G.P.)
- Correspondence: (M.S.V.-T.); (E.M.)
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7
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Engineering an Enhanced EGFR Engager: Humanization of Cetuximab for Improved Developability. Antibodies (Basel) 2022; 11:antib11010006. [PMID: 35076451 PMCID: PMC8788544 DOI: 10.3390/antib11010006] [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: 11/25/2021] [Revised: 12/12/2021] [Accepted: 01/05/2022] [Indexed: 01/05/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) is a receptor tyrosine kinase whose proliferative effects can contribute to the development of many types of solid tumors when overexpressed. For this reason, EGFR inhibitors such as cetuximab can play an important role in treating cancers such as colorectal cancer and head and neck cancer. Cetuximab is a chimeric monoclonal antibody containing mouse variable regions that bind to EGFR and prevent it from signaling. Although cetuximab has been used clinically since 2004 to successfully control solid tumors, advances in protein engineering have created the opportunity to address some of its shortcomings. In particular, the presence of mouse sequences could contribute to immunogenicity in the form of anti-cetuximab antibodies, and an occupied glycosylation site in FR3 can contribute to hypersensitivity reactions and product heterogeneity. Using simple framework graft or sequence-/structure-guided approaches, cetuximab was humanized onto 11 new frameworks. In addition to increasing humanness and removing the VH glycosylation site, dynamic light scattering revealed increases in stability, and bio-layer interferometry confirmed minimal changes in binding affinity, with patterns emerging across the humanization method. This work demonstrates the potential to improve the biophysical and clinical properties of first-generation protein therapeutics and highlights the advantages of computationally guided engineering.
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8
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Sepahdar Z, Miroliaei M, Bouzari S, Khalaj V, Salimi M. Surface Engineering of Escherichia coli-Derived OMVs as Promising Nano-Carriers to Target EGFR-Overexpressing Breast Cancer Cells. Front Pharmacol 2021; 12:719289. [PMID: 34867325 PMCID: PMC8638777 DOI: 10.3389/fphar.2021.719289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/15/2021] [Indexed: 11/13/2022] Open
Abstract
Bacterial outer membrane vesicles (OMVs) have recently drawn a great deal of attention due to their therapeutic efficiency and ability to target specific cells. In the present study, we sought to probe engineered OMVs as novel and promising carriers to target breast cancer cells. Following the fusion of the affiEGFR-GALA structure to the C-terminal of ClyA as an anchor protein, the ClyA-affiEGFR-GALA construct was successfully expressed on the surface of ∆msbB/∆pagP E. coli W3110-derived OMVs. Morphological features of the engineered and wild-type OMVs were identical. The engineered OMVs induced no endotoxicity, cytotoxicity, or immunogenicity, indicating the safety of their application. These OMVs could specifically bind to EGF receptors of MDA-MB-468 cells expressing high levels of EGFR and not to those with low levels of EGFR (HEK293T cells). Interestingly, despite a lower binding affinity of the engineered OMVs relative to the positive control Cetuximab, it was strong enough to identify these cells. Moreover, confocal microscopy revealed no uptake of the modified OMVs by the EGFR-overexpressing cells in the presence of EGFR competitors. These results suggest that OMVs might internalize into the cells with EGF receptors, as no OMVs entered the cells with any EGFR expression or those pretreated with EGF or Cetuximab. Regarding the EGFR-binding affinity of the engineered OMVs and their cellular uptake, they are presented here as a potential carrier for cell-specific drug delivery to treat a wide variety of cancer cells. Interestingly, the engineered OMVs are capable of reaching the cytoplasm while escaping the endosome due to the incorporation of a fusogenic GALA peptide in the construct.
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Affiliation(s)
- Zahra Sepahdar
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Mehran Miroliaei
- Department of Cell and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Saeid Bouzari
- Department of Molecular Biology, Pasteur Institute of Iran, Tehran, Iran
| | - Vahid Khalaj
- Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Mona Salimi
- Physiology and Pharmacology Department, Pasteur Institute of Iran, Tehran, Iran
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9
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Ren K, Gong H, Ma Z, Tian L, Ye W, Lv X, Wu C. Structure and activity of an anti-epidermal growth factor receptor antibody without galactose-α-1,3-galactose residues. Drug Dev Res 2021; 83:637-645. [PMID: 34725841 DOI: 10.1002/ddr.21894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/22/2021] [Accepted: 10/03/2021] [Indexed: 11/12/2022]
Abstract
Epidermal growth factor receptor (EGFR) is a transmembrane glycoprotein, which has been considered as one of the key targets for cancer therapy. However, currently approved therapeutic anti-EGFR antibody may cause the hypersensitivity reaction induced by galactose-α-1,3-galactose (α-Gal) structure, which is inevitable in insect cell expression system. In this study, the Chinese hamster ovary cell line was used to produce a monoclonal antibody containing simplified glycosylation patterns (code: AB01). And cetuximab was used as a control. The two antibodies were highly similar in molecular weight, secondary structure, binding affinity and endocytosis behavior, whereas the glycotypes are extremely distinct. The flow cytometry assay suggested that AB01 induced cell cycle arrest in G1, thus inhibit cell proliferation. Moreover, both cetuximab and AB01 showed similar sensitivity for all tested cell lines in this research. In conclusion, AB01 could be a potential anti-EGFR drug candidate for cancer therapy.
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Affiliation(s)
- Keyun Ren
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China.,The experimental laboratory, Beijing Institute of Radiation Medicine, Beijing, China
| | - Hao Gong
- The Innovative Drug R & D Center of Wuhan Junke-Optical Valley, Wuhan, Hubei, China
| | - Zheng Ma
- The Innovative Drug R & D Center of Wuhan Junke-Optical Valley, Wuhan, Hubei, China
| | - Lvming Tian
- The Innovative Drug R & D Center of Wuhan Junke-Optical Valley, Wuhan, Hubei, China
| | - Wei Ye
- The Innovative Drug R & D Center of Wuhan Junke-Optical Valley, Wuhan, Hubei, China
| | - Xingkai Lv
- The Innovative Drug R & D Center of Wuhan Junke-Optical Valley, Wuhan, Hubei, China
| | - Chutse Wu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China.,The experimental laboratory, Beijing Institute of Radiation Medicine, Beijing, China
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10
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Chesterman C, Arnold E. Co-crystallization with diabodies: A case study for the introduction of synthetic symmetry. Structure 2021; 29:598-605.e3. [PMID: 33636101 PMCID: PMC8178225 DOI: 10.1016/j.str.2021.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 10/05/2020] [Accepted: 02/08/2021] [Indexed: 01/09/2023]
Abstract
This work presents a method for introducing synthetic symmetry into protein crystallization samples using an antibody fragment termed a diabody (Dab). These Dabs contain two target binding sites, and engineered disulfide bonds have been included to modulate Dab flexibility. The impacts of Dab engineering have been observed through assessment of thermal stability, small-angle X-ray scattering, and high-resolution crystal structures. Complexes between the engineered Dabs and HIV-1 reverse transcriptase (RT) bound to a high-affinity DNA aptamer were also generated to explore the capacity of engineered Dabs to enable the crystallization of bound target proteins. This strategy increased the crystallization hit frequency obtained for RT-aptamer, and the structure of a Dab-RT-aptamer complex was determined to 3.0-Å resolution. Introduction of synthetic symmetry using a Dab could be a broadly applicable strategy, especially when monoclonal antibodies for a target have previously been identified.
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Affiliation(s)
- Chelsy Chesterman
- Center for Advanced Biotechnology and Medicine and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA; GSK, Rockville, MD 20850, USA
| | - Eddy Arnold
- Center for Advanced Biotechnology and Medicine and Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA.
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11
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Mondal N, Silva M, Castano AP, Maus MV, Sackstein R. Glycoengineering of chimeric antigen receptor (CAR) T-cells to enforce E-selectin binding. J Biol Chem 2019; 294:18465-18474. [PMID: 31628196 DOI: 10.1074/jbc.ra119.011134] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/16/2019] [Indexed: 12/26/2022] Open
Abstract
Tissue colonization (homing) by blood-borne cells critically hinges on the ability of the cells to adhere to vascular endothelium with sufficient strength to overcome prevailing hemodynamic shear stress. These adhesive interactions are most effectively engendered via binding of the endothelial lectin E-selectin (CD62E) to its cognate ligand, sialyl Lewis-X (sLe X ), displayed on circulating cells. Although chimeric antigen receptor (CAR) T-cell immunotherapy holds promise for treatment of various hematologic and non-hematologic malignancies, there is essentially no information regarding the efficiency of CAR T-cell homing. Accordingly, we performed integrated biochemical studies and adhesion assays to examine the capacity of human CAR T-cells to engage E-selectin. Our data indicate that CAR T-cells do not express sLe X and do not bind E-selectin. However, enforced sLe X display can be achieved on human CAR T-cells by surface fucosylation, with resultant robust E-selectin binding under hemodynamic shear. Importantly, following intravascular administration into mice, fucosylated human CAR-T cells infiltrate marrow with 10-fold higher efficiency than do unfucosylated cells. Collectively, these findings indicate that custom installation of sLe X programs tissue colonization of vascularly administered human CAR T-cells, offering a readily translatable strategy to augment tissue delivery, thereby lowering the pertinent cell dosing and attendant cell production burden, for CAR T-cell immunotherapy applications.
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Affiliation(s)
- Nandini Mondal
- Department of Dermatology and Harvard Skin Disease Research Center, Brigham and Women's Hospital, Boston, Massachusetts 02115; Program of Excellence in Glycosciences, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Mariana Silva
- Department of Dermatology and Harvard Skin Disease Research Center, Brigham and Women's Hospital, Boston, Massachusetts 02115
| | - Ana P Castano
- Cellular Immunotherapy Program, Cancer Center, Massachusetts General Hospital, Boston, Massachusetts 02129
| | - Marcela V Maus
- Cellular Immunotherapy Program, Cancer Center, Massachusetts General Hospital, Boston, Massachusetts 02129
| | - Robert Sackstein
- Department of Dermatology and Harvard Skin Disease Research Center, Brigham and Women's Hospital, Boston, Massachusetts 02115; Program of Excellence in Glycosciences, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115; Department of Translational Medicine, Herbert Wertheim College of Medicine, and Translational Glycobiology Institute, Florida International University, Miami, Florida 33199.
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