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Ge M, Zhu Y, Wei M, Piao H, He M. Improving the efficacy of anti-EGFR drugs in GBM: Where we are going? Biochim Biophys Acta Rev Cancer 2023; 1878:188996. [PMID: 37805108 DOI: 10.1016/j.bbcan.2023.188996] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 09/11/2023] [Accepted: 09/29/2023] [Indexed: 10/09/2023]
Abstract
The therapies targeting mutations of driver genes in cancer have advanced into clinical trials for a variety of tumors. In glioblastoma (GBM), epidermal growth factor receptor (EGFR) is the most commonly mutated oncogene, and targeting EGFR has been widely investigated as a promising direction. However, the results of EGFR pathway inhibitors have not been satisfactory. Limited blood-brain barrier (BBB) permeability, drug resistance, and pathway compensation mechanisms contribute to the failure of anti-EGFR therapies. This review summarizes recent research advances in EGFR-targeted therapy for GBM and provides insight into the reasons for the unsatisfactory results of EGFR-targeted therapy. By combining the results of preclinical studies with those of clinical trials, we discuss that improved drug penetration across the BBB, the use of multi-target combinations, and the development of peptidomimetic drugs under the premise of precision medicine may be promising strategies to overcome drug resistance in GBM.
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Affiliation(s)
- Manxi Ge
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China
| | - Yan Zhu
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China
| | - Minjie Wei
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China; Liaoning Medical Diagnosis and Treatment Center, Shenyang, China.
| | - Haozhe Piao
- Department of Neurosurgery, Liaoning Cancer Hospital and Institute, Cancer Hospital of China Medical University, Shenyang, China.
| | - Miao He
- Department of Pharmacology, School of Pharmacy, China Medical University, Shenyang, China; Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Liaoning Cancer Immune Peptide Drug Engineering Technology Research Center, Shenyang, China.
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2
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Fasano M, Della Corte CM, Viscardi G, Di Liello R, Paragliola F, Sparano F, Iacovino ML, Castrichino A, Doria F, Sica A, Morgillo F, Colella G, Tartaro G, Cappabianca S, Testa D, Motta G, Ciardiello F. Head and neck cancer: the role of anti-EGFR agents in the era of immunotherapy. Ther Adv Med Oncol 2021; 13:1758835920949418. [PMID: 33767760 PMCID: PMC7953226 DOI: 10.1177/1758835920949418] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/15/2020] [Indexed: 01/08/2023] Open
Abstract
Head and neck cancers (HNC) represent the seventh most frequent cancer worldwide, with squamous cell carcinomas as the most frequent histologic subtype. Standard treatment for early stage diseases is represented by single modality surgery or radiotherapy, whereas in the locally advanced and recurrent or metastatic settings a more aggressive multi-modal approach is needed with locoregional intervention and/or systemic therapies. Epidermal Growth Factor Receptor (EGFR) plays an important role in HNC biology and has been studied extensively in preclinical and clinical settings. In this scenario, anti-EGFR targeted agent cetuximab, introduced in clinical practice a decade ago, represents the only approved targeted therapy to date, while the development of immune-checkpoint inhibitors has recently changed the available treatment options. In this review, we focus on the current role of anti-EGFR therapies in HNCs, underlying available clinical data and mechanisms of resistance, and highlight future perspectives regarding their role in the era of immunotherapy.
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Affiliation(s)
- Morena Fasano
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli. Via Sergio Pansini 5, Naples, 80131, Italy
| | - Carminia Maria Della Corte
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Giuseppe Viscardi
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Raimondo Di Liello
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Fernando Paragliola
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Francesca Sparano
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Maria Lucia Iacovino
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | | | - Francesca Doria
- Centro radiologico Vega, Centro radiologico fisica e terapia fisica Morrone, Caserta, Italy
| | - Antonello Sica
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Floriana Morgillo
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Giuseppe Colella
- Maxillo-Facial Surgery Department, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Giampaolo Tartaro
- Maxillo-Facial Surgery Department, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Salvatore Cappabianca
- Department of Precision Medicine, Radiology Unit, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Domenico Testa
- Department of Anesthesiology, Surgical and Emergency Science, Clinic of Otorhinolaryngology, Head and Neck Surgery Unit, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Gaetano Motta
- Department of Anesthesiology, Surgical and Emergency Science, Clinic of Otorhinolaryngology, Head and Neck Surgery Unit, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Fortunato Ciardiello
- Department of Precision Medicine, Medical Oncology, University of Campania Luigi Vanvitelli, Naples, Italy
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3
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Jones S, King PJ, Antonescu CN, Sugiyama MG, Bhamra A, Surinova S, Angelopoulos N, Kragh M, Pedersen MW, Hartley JA, Futter CE, Hochhauser D. Targeting of EGFR by a combination of antibodies mediates unconventional EGFR trafficking and degradation. Sci Rep 2020; 10:663. [PMID: 31959764 PMCID: PMC6970994 DOI: 10.1038/s41598-019-57153-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 12/02/2019] [Indexed: 01/17/2023] Open
Abstract
Antibody combinations targeting cell surface receptors are a new modality of cancer therapy. The trafficking and signalling mechanisms regulated by such therapeutics are not fully understood but could underlie differential tumour responses. We explored EGFR trafficking upon treatment with the antibody combination Sym004 which has shown promise clinically. Sym004 promoted EGFR endocytosis distinctly from EGF: it was asynchronous, not accompanied by canonical signalling events and involved EGFR clustering within detergent-insoluble plasma mebrane-associated tubules. Sym004 induced lysosomal degradation independently of EGFR ubiquitylation but dependent upon Hrs/Tsg101 that are required for the formation of intraluminal vesicles (ILVs) within late endosomes. We propose Sym004 cross-links EGFR physically triggering EGFR endocytosis and incorporation onto ILVs and so Sym004 sensitivity correlates with EGFR numbers available for binding, rather than specific signalling events. Consistently Sym004 efficacy and potentiation of cisplatin responses correlated with EGFR surface expression in head and neck cancer cells. These findings will have implications in understanding the mode of action of this new class of cancer therapeutics.
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Affiliation(s)
- Sylwia Jones
- Cancer Research UK Drug-DNA Interactions Research Group, UCL Cancer Institute, Paul O'Gorman Building, University College London, London, WC1E 6DD, UK
| | - Peter J King
- Cancer Research UK Drug-DNA Interactions Research Group, UCL Cancer Institute, Paul O'Gorman Building, University College London, London, WC1E 6DD, UK
| | | | | | - Amandeep Bhamra
- Proteomics Research Core Facility, UCL Cancer Institute, University College London, London, UK
| | - Silvia Surinova
- Proteomics Research Core Facility, UCL Cancer Institute, University College London, London, UK
| | - Nicos Angelopoulos
- Proteomics Research Core Facility, UCL Cancer Institute, University College London, London, UK
| | | | | | - John A Hartley
- Cancer Research UK Drug-DNA Interactions Research Group, UCL Cancer Institute, Paul O'Gorman Building, University College London, London, WC1E 6DD, UK
| | - Clare E Futter
- UCL Institute of Ophthalmology, University College London, 11-43 Bath Street, London, EC1V 9EL, UK
| | - Daniel Hochhauser
- Cancer Research UK Drug-DNA Interactions Research Group, UCL Cancer Institute, Paul O'Gorman Building, University College London, London, WC1E 6DD, UK.
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4
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Rogers BJ, Lawrence J, Ehler E, Ferreira C. Impact of various irradiation conditions on delivered dose and cell viability for
in vitro
cell irradiation. Biomed Phys Eng Express 2019. [DOI: 10.1088/2057-1976/ab5037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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5
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Fukuoka S, Kojima T, Koga Y, Yamauchi M, Komatsu M, Komatsuzaki R, Sasaki H, Yasunaga M, Matsumura Y, Doi T, Ohtsu A. Preclinical efficacy of Sym004, novel anti-EGFR antibody mixture, in esophageal squamous cell carcinoma cell lines. Oncotarget 2017; 8:11020-11029. [PMID: 28038457 PMCID: PMC5355242 DOI: 10.18632/oncotarget.14209] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 12/16/2016] [Indexed: 12/22/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) is a well-validated oncological target molecule for monoclonal antibody therapies and Sym004 is a novel anti-EGFR antibody mixture comprising two recombinant chimeric IgG1 antibodies against non-overlapping epitopes of EGFR. Because EGFR is highly expressed in the majority of esophageal squamous cell carcinomas (ESCCs), we investigated the efficacy of Sym004 in human ESCC cell lines. Forty eight ESCC cell lines were treated with three kinds of anti-EGFR antibodies (Sym004, cetuximab, and panitumumab). Genetic background was investigated by next generation sequencing. The internalization of anti-EGFR antibodies into ESCC cells and inhibition of the EGFR signaling cascade by anti-EGFR antibodies were investigated in vitro. Furthermore, growth inhibition by anti-EGFR antibody treatment was investigated in vitro and in vivo. Sym004 treatments were more effective at inducing EGFR internalization and degradation than the two other anti-EGFR antibodies. Sym004 was more sensitive significantly to cell lines with EGFR gene amplification than those without amplification (P = 0.002). Growth inhibition of Sym004 was greater than in that of cetuximab or panitumumab in vitro and in vivo. These studies showed that Sym004 exhibited antitumor activity in some ESCC cell lines in preclinical settings and warrant a clinical evaluation in patients with ESCC. EGFR amplification is a potential biomarker of response to Sym004.
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Affiliation(s)
- Shota Fukuoka
- Division of Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan.,Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takashi Kojima
- Division of Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yoshikatsu Koga
- Division of Developmental Therapeutics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
| | - Mayumi Yamauchi
- Division of Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Masayuki Komatsu
- Department of Translational Oncology, Fundamental Innovative Oncology Core Center, National Cancer Center Research Institute, Tokyo, Japan
| | - Rie Komatsuzaki
- Department of Translational Oncology, Fundamental Innovative Oncology Core Center, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiroki Sasaki
- Department of Translational Oncology, Fundamental Innovative Oncology Core Center, National Cancer Center Research Institute, Tokyo, Japan
| | - Masahiro Yasunaga
- Division of Developmental Therapeutics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
| | - Yasuhiro Matsumura
- Division of Developmental Therapeutics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center Hospital East, Kashiwa, Japan
| | - Toshihiko Doi
- Division of Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | - Atsushi Ohtsu
- Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan.,Advanced Clinical Research of Cancer, Juntendo University Graduate School of Medicine, Tokyo, Japan
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Iida M, Bahrar H, Brand TM, Pearson HE, Coan JP, Orbuch RA, Flanigan BG, Swick AD, Prabakaran PJ, Lantto J, Horak ID, Kragh M, Salgia R, Kimple RJ, Wheeler DL. Targeting the HER Family with Pan-HER Effectively Overcomes Resistance to Cetuximab. Mol Cancer Ther 2016; 15:2175-86. [PMID: 27422810 PMCID: PMC5010956 DOI: 10.1158/1535-7163.mct-16-0012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 07/01/2016] [Indexed: 12/31/2022]
Abstract
Cetuximab, an antibody against the EGFR, has shown efficacy in treating head and neck squamous cell carcinoma (HNSCC), metastatic colorectal cancer, and non-small cell lung cancer (NSCLC). Despite the clinical success of cetuximab, many patients do not respond to cetuximab. Furthermore, virtually all patients who do initially respond become refractory, highlighting both intrinsic and acquired resistance to cetuximab as significant clinical problems. To understand mechanistically how cancerous cells acquire resistance, we previously developed models of acquired resistance using the H226 NSCLC and UM-SCC1 HNSCC cell lines. Cetuximab-resistant clones showed a robust upregulation and dependency on the HER family receptors EGFR, HER2, and HER3. Here, we examined pan-HER, a mixture of six antibodies targeting these receptors on cetuximab-resistant clones. In cells exhibiting acquired or intrinsic resistance to cetuximab, pan-HER treatment decreased all three receptors' protein levels and downstream activation of AKT and MAPK. This correlated with decreased cell proliferation in cetuximab-resistant clones. To determine whether pan-HER had a therapeutic benefit in vivo, we established de novo cetuximab-resistant mouse xenografts and treated resistant tumors with pan-HER. This regimen resulted in a superior growth delay of cetuximab-resistant xenografts compared with mice continued on cetuximab. Furthermore, intrinsically cetuximab-resistant HNSCC patient-derived xenograft tumors treated with pan-HER exhibited significant growth delay compared with vehicle/cetuximab controls. These results suggest that targeting multiple HER family receptors simultaneously with pan-HER is a promising treatment strategy for tumors displaying intrinsic or acquired resistance to cetuximab. Mol Cancer Ther; 15(9); 2175-86. ©2016 AACR.
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Affiliation(s)
- Mari Iida
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Harsh Bahrar
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. Radboud Department of Radiation Oncology, University Medical Centre Nijmegen, Nijmegen, the Netherlands
| | - Toni M Brand
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Hannah E Pearson
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - John P Coan
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Rachel A Orbuch
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Bailey G Flanigan
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Adam D Swick
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Prashanth J Prabakaran
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | | | | | | | | | - Randy J Kimple
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Deric L Wheeler
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.
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7
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Campbell NP, Hensing TA, Bhayani MK, Shaikh AY, Brockstein BE. Targeting pathways mediating resistance to anti-EGFR therapy in squamous cell carcinoma of the head and neck. Expert Rev Anticancer Ther 2016; 16:847-58. [PMID: 27400139 DOI: 10.1080/14737140.2016.1202116] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION As epidermal growth factor receptor (EGFR) is overexpressed in approximately 90% of squamous cell carcinomas of the head and neck (SCCHN), several therapeutic agents that target EGFR have been evaluated for the treatment of SCCHN. Although patients with SCCHN derive clinical benefit from anti-EGFR agents, most notably the EGFR monoclonal antibody cetuximab, these patients eventually become resistant to EGFR-based therapies; preclinical studies have shown activation of secondary signaling pathways that lead to resistance to EGFR inhibition and, as such, serve as potential therapeutic targets to overcome resistance to EGFR inhibitors. AREAS COVERED This review summarizes the results of recently completed trials of anti-EGFR agents in SCCHN, highlights the various mechanisms that drive resistance to EGFR inhibitors in SCCHN, and focuses on several novel targeted agents that could potentially help overcome resistance to EGFR-based therapies in SCCHN. Expert commentary: Due to the development of resistance to EGFR-targeted therapies, novel treatment approaches to overcome resistance are a key unmet need for SCCHN.
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Affiliation(s)
- Nicholas P Campbell
- a Kellogg Cancer Center , NorthShore University HealthSystem , Evanston , IL , USA
| | - Thomas A Hensing
- a Kellogg Cancer Center , NorthShore University HealthSystem , Evanston , IL , USA
| | - Mihir K Bhayani
- a Kellogg Cancer Center , NorthShore University HealthSystem , Evanston , IL , USA
| | - Arif Y Shaikh
- a Kellogg Cancer Center , NorthShore University HealthSystem , Evanston , IL , USA
| | - Bruce E Brockstein
- a Kellogg Cancer Center , NorthShore University HealthSystem , Evanston , IL , USA
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8
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Carvalho S, Levi‐Schaffer F, Sela M, Yarden Y. Immunotherapy of cancer: from monoclonal to oligoclonal cocktails of anti-cancer antibodies: IUPHAR Review 18. Br J Pharmacol 2016; 173:1407-24. [PMID: 26833433 PMCID: PMC4831314 DOI: 10.1111/bph.13450] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 01/14/2016] [Accepted: 01/20/2016] [Indexed: 12/11/2022] Open
Abstract
Antibody-based therapy of cancer employs monoclonal antibodies (mAbs) specific to soluble ligands, membrane antigens of T-lymphocytes or proteins located at the surface of cancer cells. The latter mAbs are often combined with cytotoxic regimens, because they block survival of residual fractions of tumours that evade therapy-induced cell death. Antibodies, along with kinase inhibitors, have become in the last decade the mainstay of oncological pharmacology. However, partial and transient responses, as well as emergence of tumour resistance, currently limit clinical application of mAbs. To overcome these hurdles, oligoclonal antibody mixtures are being tested in animal models and in clinical trials. The first homo-combination of two mAbs, each engaging a distinct site of HER2, an oncogenic receptor tyrosine kinase (RTK), has been approved for treatment of breast cancer. Likewise, a hetero-combination of antibodies to two distinct T-cell antigens, PD1 and CTLA4, has been approved for treatment of melanoma. In a similar vein, additive or synergistic anti-tumour effects observed in animal models have prompted clinical testing of hetero-combinations of antibodies simultaneously engaging distinct RTKs. We discuss the promise of antibody cocktails reminiscent of currently used mixtures of chemotherapeutics and highlight mechanisms potentially underlying their enhanced clinical efficacy.
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Affiliation(s)
- Silvia Carvalho
- Department of Biological RegulationWeizmann Institute of ScienceRehovotIsrael
| | - Francesca Levi‐Schaffer
- Pharmacology and Experimental Therapeutics Unit, Institute for Drug Research, School of Pharmacy, Faculty of MedicineThe Hebrew University of JerusalemJerusalemIsrael
| | - Michael Sela
- Department of ImmunologyWeizmann Institute of ScienceRehovotIsrael
| | - Yosef Yarden
- Department of Biological RegulationWeizmann Institute of ScienceRehovotIsrael
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9
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Huang S, Peter Rodemann H, Harari PM. Molecular Targeting of Growth Factor Receptor Signaling in Radiation Oncology. Recent Results Cancer Res 2016; 198:45-87. [PMID: 27318681 DOI: 10.1007/978-3-662-49651-0_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ionizing radiation has been shown to activate and interact with multiple growth factor receptor pathways that can influence tumor response to therapy. Among these receptor interactions, the epidermal growth factor receptor (EGFR) has been the most extensively studied with mature clinical applications during the last decade. The combination of radiation and EGFR-targeting agents using either monoclonal antibody (mAb) or small-molecule tyrosine kinase inhibitor (TKI) offers a promising approach to improve tumor control compared to radiation alone. Several underlying mechanisms have been identified that contribute to improved anti-tumor capacity after combined treatment. These include effects on cell cycle distribution, apoptosis, tumor cell repopulation, DNA damage/repair, and impact on tumor vasculature. However, as with virtually all cancer drugs, patients who initially respond to EGFR-targeted agents may eventually develop resistance and manifest cancer progression. Several potential mechanisms of resistance have been identified including mutations in EGFR and downstream signaling molecules, and activation of alternative member-bound tyrosine kinase receptors that bypass the inhibition of EGFR signaling. Several strategies to overcome the resistance are currently being explored in preclinical and clinical models, including agents that target the EGFR T790 M resistance mutation or target multiple EGFR family members, as well as agents that target other receptor tyrosine kinase and downstream signaling sites. In this chapter, we focus primarily on the interaction of radiation with anti-EGFR therapies to summarize this promising approach and highlight newly developing opportunities.
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Affiliation(s)
- Shyhmin Huang
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue K4/336 CSC, Madison, WI, 53792, USA
- Department of Human Oncology, University of Wisconsin Comprehensive Cancer Center, WIMR 3136, 1111 Highland Ave Madison, Madison, WI, 53705, USA
| | - H Peter Rodemann
- Division of Radiobiology and Molecular Environmental Research, Department of Radiation Oncology, University of Tübingen, Röntgenweg, 72076, Tübingen, Germany
| | - Paul M Harari
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue K4/336 CSC, Madison, WI, 53792, USA.
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10
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ROSSOW LYDIA, EKE IRIS, DICKREUTER ELLEN, CORDES NILS. Targeting of the EGFR/β1 integrin connecting proteins PINCH1 and Nck2 radiosensitizes three-dimensional SCC cell cultures. Oncol Rep 2015; 34:469-76. [DOI: 10.3892/or.2015.4006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/04/2015] [Indexed: 11/05/2022] Open
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11
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Ugurluer G, Ozsahin M. Early investigational drugs that target epidermal growth factor receptors for the treatment of head and neck cancer. Expert Opin Investig Drugs 2014; 23:1637-54. [DOI: 10.1517/13543784.2014.951435] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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12
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Lou YF, Zou ZZ, Chen PJ, Huang GB, Li B, Zheng DQ, Yu XR, Luo XY. Combination of gefitinib and DNA methylation inhibitor decitabine exerts synergistic anti-cancer activity in colon cancer cells. PLoS One 2014; 9:e97719. [PMID: 24874286 PMCID: PMC4038521 DOI: 10.1371/journal.pone.0097719] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 04/23/2014] [Indexed: 12/12/2022] Open
Abstract
Despite recent advances in the treatment of human colon cancer, the chemotherapy efficacy against colon cancer is still unsatisfactory. In the present study, effects of concomitant inhibition of the epidermal growth factor receptor (EGFR) and DNA methyltransferase were examined in human colon cancer cells. We demonstrated that decitabine (a DNA methyltransferase inhibitor) synergized with gefitinib (an EGFR inhibitor) to reduce cell viability and colony formation in SW1116 and LOVO cells. However, the combination of the two compounds displayed minimal toxicity to NCM460 cells, a normal human colon mucosal epithelial cell line. The combination was also more effective at inhibiting the AKT/mTOR/S6 kinase pathway. In addition, the combination of decitabine with gefitinib markedly inhibited colon cancer cell migration. Furthermore, gefitinib synergistically enhanced decitabine-induced cytotoxicity was primarily due to apoptosis as shown by Annexin V labeling that was attenuated by z-VAD-fmk, a pan caspase inhibitor. Concomitantly, cell apoptosis resulting from the co-treatment of gefitinib and decitabine was accompanied by induction of BAX, cleaved caspase 3 and cleaved PARP, along with reduction of Bcl-2 compared to treatment with either drug alone. Interestingly, combined treatment with these two drugs increased the expression of XIAP-associated factor 1 (XAF1) which play an important role in cell apoptosis. Moreover, small interfering RNA (siRNA) depletion of XAF1 significantly attenuated colon cancer cells apoptosis induced by the combination of the two drugs. Our findings suggested that gefitinib in combination with decitabine exerted enhanced cell apoptosis in colon cancer cells were involved in mitochondrial-mediated pathway and induction of XAF1 expression. In conclusion, based on the observations from our study, we suggested that the combined administration of these two drugs might be considered as a novel therapeutic regimen for treating colon cancer.
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Affiliation(s)
- Yun-feng Lou
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - Zheng-zhi Zou
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | - Pin-jia Chen
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - Guo-bin Huang
- Department of Gastroenterology, The Affiliated Donghua Hospital of Sun Yat-sen University, Dongguan, China
| | - Bin Li
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - De-qing Zheng
- Department of Gastroenterology, The Affiliated Donghua Hospital of Sun Yat-sen University, Dongguan, China
| | - Xiu-rong Yu
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
| | - Xiao-yong Luo
- Department of Oncology, The Affiliated Luoyang Central Hospital of Zhengzhou University, Luoyang, China
- * E-mail:
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