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Chen X, Zeng C. Pioneering the Way: The Revolutionary Potential of Antibody-Drug Conjugates in NSCLC. Curr Treat Options Oncol 2024; 25:556-584. [PMID: 38520605 DOI: 10.1007/s11864-024-01196-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2024] [Indexed: 03/25/2024]
Abstract
OPINION STATEMENT Despite targeted therapy and immunotherapy being recognized as established frontline treatments for advanced non-small cell lung cancer (NSCLC), the unavoidable development of resistance and disease progression poses ongoing challenges. Antibody-drug conjugates (ADCs) offer a potent treatment option for NSCLC through the specific delivery of cytotoxic agents to tumor cells that display distinct antigens. This review delves into the latest evidence regarding promising ADC agents for NSCLC, focusing on their targets, effectiveness, and safety assessments. Additionally, our study provides insights into managing toxicities, identifying biomarkers, devising methods to counter resistance mechanisms, tackling prevailing challenges, and outlining prospects for the clinical implementation of these innovative ADCs and combination regimens in NSCLC.
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Affiliation(s)
- Xiehui Chen
- Department of Geriatric Medicine, Shenzhen Longhua District Central Hospital, Shenzhen, 518110, China
| | - Changchun Zeng
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Shenzhen, 518110, China.
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2
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Suzuki H, Nagase S, Saito C, Takatsuka A, Nagata M, Honda K, Kaneda Y, Nishiya Y, Honda T, Ishizaka T, Nakamura K, Nakada T, Abe Y, Agatsuma T. Raludotatug Deruxtecan, a CDH6-Targeting Antibody-Drug Conjugate with a DNA Topoisomerase I Inhibitor DXd, Is Efficacious in Human Ovarian and Kidney Cancer Models. Mol Cancer Ther 2024; 23:257-271. [PMID: 38205802 PMCID: PMC10911705 DOI: 10.1158/1535-7163.mct-23-0287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/28/2023] [Accepted: 01/05/2024] [Indexed: 01/12/2024]
Abstract
Cadherin-6 (CDH6) is expressed in several cancer types, but no CDH6-targeted therapy is currently clinically available. Here, we generated raludotatug deruxtecan (R-DXd; DS-6000), a novel CDH6-targeting antibody-drug conjugate with a potent DNA topoisomerase I inhibitor, and evaluated its properties, pharmacologic activities, and safety profile. In vitro pharmacologic activities and the mechanisms of action of R-DXd were assessed in serous-type ovarian cancer and renal cell carcinoma cell lines. In vivo pharmacologic activities were evaluated with several human cancer cell lines and patient-derived xenograft mouse models. The safety profile in cynomolgus monkeys was also assessed. R-DXd exhibited CDH6 expression-dependent cell growth-inhibitory activity and induced tumor regression in xenograft models. In this process, R-DXd specifically bound to CDH6, was internalized into cancer cells, and then translocated to the lysosome. The DXd released from R-DXd induced the phosphorylation of Chk1, a DNA damage marker, and cleaved caspase-3, an apoptosis marker, in cancer cells. It was also confirmed that the DXd payload had a bystander effect, passing through the cell membrane and impacting surrounding cells. The safety profile of R-DXd was favorable and the highest non-severely toxic dose was 30 mg/kg in cynomolgus monkeys. R-DXd demonstrated potent antitumor activity against CDH6-expressing tumors in mice and an acceptable safety profile in monkeys. These findings indicate the potential of R-DXd as a new treatment option for patients with CDH6-expressing serous-type ovarian cancer and renal cell carcinoma in a clinical setting.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Yuki Abe
- Daiichi Sankyo Co., Ltd., Tokyo, Japan
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Gmeiner WH. Recent Advances in Therapeutic Strategies to Improve Colorectal Cancer Treatment. Cancers (Basel) 2024; 16:1029. [PMID: 38473386 PMCID: PMC10930828 DOI: 10.3390/cancers16051029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/24/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Colorectal cancer (CRC) is the second-leading cause of cancer-related mortality worldwide. CRC mortality results almost exclusively from metastatic disease (mCRC) for which systemic chemotherapy is often a preferred therapeutic option. Biomarker-based stratification of mCRC enables the use of precision therapy based on individual tumor mutational profiles. Activating mutations in the RAS/RAF/MAPK pathway downstream of EGFR signaling have, until recently, limited the use of EGFR-targeted therapies for mCRC; however, the development of anti-RAS and anti-RAF therapies together with improved strategies to limit compensatory signaling pathways is resulting in improved survival rates in several highly lethal mCRC sub-types (e.g., BRAF-mutant). The use of fluoropyrimidine (FP)-based chemotherapy regimens to treat mCRC continues to evolve contributing to improved long-term survival. Future advances in chemotherapy for mCRC will need to position development relative to the advances made in precision oncology.
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Affiliation(s)
- William H Gmeiner
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA
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4
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Blas PE, Rodriguez ESR, Williams HL, Levin MK, Bell JSK, Pierobon M, Barrett AS, Petricoin EF, O'Shaughnessy JA. Targeting HER2/HER3 co-mutations in metastatic breast cancer: Case reports of exceptional responders to trastuzumab and pertuzumab therapy. Cancer Rep (Hoboken) 2024; 7:e1954. [PMID: 38441358 PMCID: PMC10913072 DOI: 10.1002/cnr2.1954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 11/13/2023] [Accepted: 12/04/2023] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Overexpression of HER2 plays an important role in cancer progression and is the target of multiple therapies in HER2-positive breast cancer. Recent studies have also highlighted the presence of activating mutations in HER2, and HER3 that are predicted to enhance HER2 downstream pathway activation in a HER2-dependent manner. METHODS In this report, we present two exceptional responses in hormone receptor-positive, HER2-nonamplified, HER2/HER3 co-mutated metastatic breast cancer patients who were treated with the anti-HER2-directed monoclonal antibodies, trastuzumab and pertuzumab. RESULTS Both patients acheived exceptional responses to treatment, suggesting that combined trastuzumab, pertuzumab, and endocrine therapy could be a highly effective therapy for these patients and our observations could help prioritize trastuzumab deruxtecan as an early therapeutic choice for patients whose cancers have activating mutations in HER2.
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Affiliation(s)
- Page E. Blas
- Clinical Oncology Research CoordinationBaylor Scott and White Research InstituteDallasTexasUSA
| | | | - Heather L. Williams
- Clinical Oncology Research CoordinationBaylor Scott and White Research InstituteDallasTexasUSA
| | - Maren K. Levin
- Clinical Oncology Research CoordinationBaylor Scott and White Research InstituteDallasTexasUSA
| | - Joshua S. K. Bell
- Department of Translational ScienceTempus Labs Inc.ChicagoIllinoisUSA
| | - Mariaelena Pierobon
- Center for Applied Proteomics and Molecular MedicineGeorge Mason UniversityManassasVirginiaUSA
| | | | - Emanuel F. Petricoin
- Center for Applied Proteomics and Molecular MedicineGeorge Mason UniversityManassasVirginiaUSA
| | - Joyce A. O'Shaughnessy
- Breast Cancer Research ProgramBaylor University Medical Center, Texas Oncology, US OncologyDallasTexasUSA
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Wang X, Wu H, Tang L, Fu W, He Y, Zeng C, Wang WE. The novel antibody fusion protein rhNRG1-HER3i promotes heart regeneration by enhancing NRG1-ERBB4 signaling pathway. J Mol Cell Cardiol 2024; 187:26-37. [PMID: 38150867 DOI: 10.1016/j.yjmcc.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 12/04/2023] [Accepted: 12/18/2023] [Indexed: 12/29/2023]
Abstract
Stimulating cardiomyocyte proliferation in the adult heart has emerged as a promising strategy for cardiac regeneration following myocardial infarction (MI). The NRG1-ERBB4 signaling pathway has been implicated in the regulation of cardiomyocyte proliferation. However, the therapeutic potential of recombinant human NRG1 (rhNRG1) has been limited due to the low expression of ERBB4 in adult cardiomyocytes. Here, we investigated whether a fusion protein of rhNRG1 and an ERBB3 inhibitor (rhNRG1-HER3i) could enhance the affinity of NRG1 for ERBB4 and promote adult cardiomyocyte proliferation. In vitro and in vivo experiments were conducted using postnatal day 1 (P1), P7, and adult cardiomyocytes. Western blot analysis was performed to assess the expression and activity of ERBB4. Cardiomyocyte proliferation was evaluated using Ki67 and pH 3 immunostaining, while fibrosis was assessed using Masson staining. Our results indicate that rhNRG1-HER3i, but not rhNRG1, promoted P7 and adult cardiomyocyte proliferation. Furthermore, rhNRG1-HER3i improved cardiac function and reduced cardiac fibrosis in post-MI hearts. Administration of rhNRG1-HER3i inhibited ERBB3 phosphorylation while increasing ERBB4 phosphorylation in adult mouse hearts. Additionally, rhNRG1-HER3i enhanced angiogenesis following MI compared to rhNRG1. In conclusion, our findings suggest that rhNRG1-HER3i is a viable therapeutic approach for promoting adult cardiomyocyte proliferation and treating MI by enhancing NRG1-ERBB4 signaling pathway.
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Affiliation(s)
- Xuemei Wang
- School of Medicine, Chongqing University, Chongqing 400044, China
| | - Hao Wu
- Department of Cardiology, Daping Hospital, Third Military Medical University (Army Military Medical University), Chongqing 400042, China
| | - Luxun Tang
- Department of Cardiovascular Medicine, The General Hospital of Western Theater Command PLA, Chengdu 610083, China
| | - Wenbin Fu
- Department of Cardiology, Daping Hospital, Third Military Medical University (Army Military Medical University), Chongqing 400042, China; Chongqing Key Laboratory for Hypertension Research, Chongqing Cardiovascular Clinical Research Center, Chongqing Institute of Cardiology, Chongqing 400042, China
| | - Yanji He
- Department of Cardiology, Daping Hospital, Third Military Medical University (Army Military Medical University), Chongqing 400042, China; Chongqing Key Laboratory for Hypertension Research, Chongqing Cardiovascular Clinical Research Center, Chongqing Institute of Cardiology, Chongqing 400042, China
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, Third Military Medical University (Army Military Medical University), Chongqing 400042, China; Chongqing Key Laboratory for Hypertension Research, Chongqing Cardiovascular Clinical Research Center, Chongqing Institute of Cardiology, Chongqing 400042, China; State Key Laboratory of Trauma, Burns and Combined Injury, Daping Hospital, The Third Military Medical University, Chongqing 400042, China; Department of Cardiology, Chongqing General Hospital, Chongqing 401147, China; Cardiovascular Research Center of Chongqing College, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Chongqing 400722, China; Heart Center of Fujian Province, Union Hospital, Fujian Medical University, Fuzhou 350001, China.
| | - Wei Eric Wang
- School of Medicine, Chongqing University, Chongqing 400044, China; Department of Cardiology, Daping Hospital, Third Military Medical University (Army Military Medical University), Chongqing 400042, China; Chongqing Key Laboratory for Hypertension Research, Chongqing Cardiovascular Clinical Research Center, Chongqing Institute of Cardiology, Chongqing 400042, China.
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Cherifi F, Da Silva A, Martins-Branco D, Awada A, Nader-Marta G. Pharmacokinetics and pharmacodynamics of antibody-drug conjugates for the treatment of patients with breast cancer. Expert Opin Drug Metab Toxicol 2024; 20:45-59. [PMID: 38214896 DOI: 10.1080/17425255.2024.2302460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 01/03/2024] [Indexed: 01/13/2024]
Abstract
INTRODUCTION Currently three antibody-drug-conjugates (ADC) are approved by the European Medicines Agency (EMA) for treatment of breast cancer (BC) patient: trastuzumab-emtansine, trastuzumab-deruxtecan and sacituzumab-govitecan. ADC are composed of a monoclonal antibody (mAb) targeting a specific antigen, a cytotoxic payload and a linker. Pharmacokinetics (PK) and pharmacodynamics (PD) distinguish ADC from conventional chemotherapy and must be understood by clinicians. AREAS COVERED Our review delineates the PK/PD profiles of ADC approved for the treatment of BC with insight for future development. This is an expert opinion literature review based on the EMA's Assessment Reports, enriched by a comprehensive literature search performed on Medline in August 2023. EXPERT OPINION All three ADC distributions are described by a two-compartment structure: tissue and serum. Payload concentration peak is immediate but remains at low concentration. The distribution varied for all ADC only with body weight. mAb will be metabolised firstly by the saturable complex formation of ADC/Tumour-Receptor and secondly by binding of FcgRs in immune cells. They are all excreted in the bile and faeces with minimal urine elimination. Dose adjustments, apart from weight, are not recommended. Novel ADC are composed of cleavable linkers with various targets/payloads with the same PK/PD properties, but novel structures of ADC are in development.
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Affiliation(s)
- François Cherifi
- Oncology Medicine Department, Institut Jules Bordet, Hôpital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (ULB), Brussels, Belgium
- Breast Cancer Unit, CLCC François Baclesse, Institut Normand du Sein, Caen, France
| | - Angélique Da Silva
- Departments of Pharmacology and Medical Oncology, Caen-Normandy University Hospital, PICARO Cardio-Oncology Program, Normandie Univ, UNICAEN, INSERM U1086 ANTICIPE, Caen, France
| | - Diogo Martins-Branco
- Academic Trials Promoting Team (ATPT), Institut Jules Bordet, Hôpital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (U.L.B), Brussels, Belgium
| | - Ahmad Awada
- Oncology Medicine Department, Institut Jules Bordet, Hôpital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (ULB), Brussels, Belgium
| | - Guilherme Nader-Marta
- Academic Trials Promoting Team (ATPT), Institut Jules Bordet, Hôpital Universitaire de Bruxelles (HUB), Université Libre de Bruxelles (U.L.B), Brussels, Belgium
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Hajjo R, Sabbah DA, Bardaweel SK, Zhong HA. Targeting the EGFR/RAS/RAF signaling pathway in anticancer research: a recent update on inhibitor design and clinical trials (2020-2023). Expert Opin Ther Pat 2024; 34:51-69. [PMID: 38450537 DOI: 10.1080/13543776.2024.2327307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/25/2024] [Indexed: 03/08/2024]
Abstract
INTRODUCTION Recent years have seen significant strides in drug developmenttargeting the EGFR/RAS/RAF signaling pathway which is critical forcell growth and proliferation. Protein-protein interaction networksamong EGFR, RAS, and RAF proteins offer insights for drug discovery. This review discusses the drug design and development efforts ofinhibitors targeting these proteins over the past 3 years, detailingtheir structures, selectivity, efficacy, and combination therapy.Strategies to combat drug resistance and minimize toxicities areexplored, along with future research directions. AREA COVERED This review encompasses clinical trials and patents on EGFR, KRAS,and BRAF inhibitors from 2020 to 2023, including advancements indesign and synthesis of proteolysis targeting chimeras (PROTACs) forprotein degradation. EXPERT OPINION To tackle drug resistance, designing allosteric fourth-generationEGFR inhibitors is vital. Covalent, allosteric, or combinationaltherapies, along with PROTAC degraders, are key methods to addressresistance and toxicity in KRAS and BRAF inhibitors.
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Affiliation(s)
- Rima Hajjo
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan
- Laboratory for Molecular Modeling, Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Board Member, National Center for Epidemics and Communicable Disease Control (JCDC), Amman, Jordan
| | - Dima A Sabbah
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan
| | - Sanaa K Bardaweel
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Jordan, Amman, Jordan
| | - Haizhen A Zhong
- DSC 309, Department of Chemistry, The University of Nebraska at Omaha, Omaha, NE, USA
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Song CH, Jeong M, In H, Kim JH, Lin CW, Han KH. Trends in the Development of Antibody-Drug Conjugates for Cancer Therapy. Antibodies (Basel) 2023; 12:72. [PMID: 37987250 PMCID: PMC10660735 DOI: 10.3390/antib12040072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/28/2023] [Accepted: 10/31/2023] [Indexed: 11/22/2023] Open
Abstract
In cancer treatment, the first-generation, cytotoxic drugs, though effective against cancer cells, also harmed healthy ones. The second-generation targeted cancer cells precisely to inhibit their growth. Enter the third-generation, consisting of immuno-oncology drugs, designed to combat drug resistance and bolster the immune system's defenses. These advanced therapies operate by obstructing the uncontrolled growth and spread of cancer cells through the body, ultimately eliminating them effectively. Within the arsenal of cancer treatment, monoclonal antibodies offer several advantages, including inducing cancer cell apoptosis, precise targeting, prolonged presence in the body, and minimal side effects. A recent development in cancer therapy is Antibody-Drug Conjugates (ADCs), initially developed in the mid-20th century. The second generation of ADCs addressed this issue through innovative antibody modification techniques, such as DAR regulation, amino acid substitutions, incorporation of non-natural amino acids, and enzymatic drug attachment. Currently, a third generation of ADCs is in development. This study presents an overview of 12 available ADCs, reviews 71 recent research papers, and analyzes 128 clinical trial reports. The overarching objective is to gain insights into the prevailing trends in ADC research and development, with a particular focus on emerging frontiers like potential targets, linkers, and drug payloads within the realm of cancer treatment.
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Affiliation(s)
- Chi Hun Song
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea; (C.H.S.); (M.J.); (H.I.); (J.H.K.)
| | - Minchan Jeong
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea; (C.H.S.); (M.J.); (H.I.); (J.H.K.)
| | - Hyukmin In
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea; (C.H.S.); (M.J.); (H.I.); (J.H.K.)
| | - Ji Hoe Kim
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea; (C.H.S.); (M.J.); (H.I.); (J.H.K.)
| | - Chih-Wei Lin
- Institute of Biochemistry and Molecular Biology, China Medical University, Taichung 406, Taiwan;
| | - Kyung Ho Han
- Department of Biological Sciences and Biotechnology, Hannam University, Daejeon 34054, Republic of Korea; (C.H.S.); (M.J.); (H.I.); (J.H.K.)
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Tomasich E, Steindl A, Paiato C, Hatziioannou T, Kleinberger M, Berchtold L, Puhr R, Hainfellner JA, Müllauer L, Widhalm G, Eckert F, Bartsch R, Heller G, Preusser M, Berghoff AS. Frequent Overexpression of HER3 in Brain Metastases from Breast and Lung Cancer. Clin Cancer Res 2023; 29:3225-3236. [PMID: 37036472 DOI: 10.1158/1078-0432.ccr-23-0020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/24/2023] [Accepted: 04/06/2023] [Indexed: 04/11/2023]
Abstract
PURPOSE HER3 belongs to a family of receptor tyrosine kinases with oncogenic properties and is targeted by a variety of novel anticancer agents. There is a huge unmet medical need for systemic treatment options in patients with brain metastases (BM). Therefore, we aimed to investigate HER3 expression in BM of breast (BCa) and non-small cell lung cancer (NSCLC) as the basis for future clinical trial design. EXPERIMENTAL DESIGN We analyzed 180 BM samples of breast cancer or NSCLC and 47 corresponding NSCLC extracranial tissue. IHC was performed to evaluate protein expression of HER3, and immune cells based on CD3, CD8, and CD68. To identify dysregulated pathways based on differential DNA methylation patterns, we used Infinium MethylationEPIC microarrays. RESULTS A total of 99/132 (75.0%) of BCa-BM and 35/48 (72.9%) of NSCLC-BM presented with HER3 expression. Among breast cancer, HER2-positive and HER2-low BM showed significantly higher rates of HER3 coexpression than HER2-negative BM (87.1%/85.7% vs. 61.0%, P = 0.004). Among NSCLC, HER3 was more abundantly expressed in BM than in matched extracranial samples (72.9% vs. 41.3%, P = 0.003). No correlation of HER3 expression and intratumoral immune cell density was observed. HER3 expression did not correlate with overall survival from BM diagnosis. Methylation signatures differed according to HER3 status in BCa-BM samples. Pathway analysis revealed subtype-specific differences, such as TrkB and Wnt signaling pathways dysregulated in HER2-positive and triple-negative breast cancer BM, respectively. CONCLUSIONS HER3 is highly abundant in BM of breast cancer and NSCLC. Given the promising results of antibody-drug conjugates in extracranial disease, BM-specific trials that target HER3 are warranted. See related commentary by Kabraji and Lin, p. 2961.
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Affiliation(s)
- Erwin Tomasich
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Personalized Immunotherapy, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Ariane Steindl
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Personalized Immunotherapy, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Christina Paiato
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Teresa Hatziioannou
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Markus Kleinberger
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Personalized Immunotherapy, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Luzia Berchtold
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Rainer Puhr
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Johannes A Hainfellner
- Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
| | - Leonhard Müllauer
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Georg Widhalm
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Franziska Eckert
- Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria
| | - Rupert Bartsch
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Gerwin Heller
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Matthias Preusser
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Personalized Immunotherapy, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Anna Sophie Berghoff
- Division of Oncology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Christian Doppler Laboratory for Personalized Immunotherapy, Department of Medicine I, Medical University of Vienna, Vienna, Austria
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Nader-Marta G, Molinelli C, Debien V, Martins-Branco D, Aftimos P, de Azambuja E, Awada A. Antibody-drug conjugates: the evolving field of targeted chemotherapy for breast cancer treatment. Ther Adv Med Oncol 2023; 15:17588359231183679. [PMID: 37435563 PMCID: PMC10331351 DOI: 10.1177/17588359231183679] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 05/31/2023] [Indexed: 07/13/2023] Open
Abstract
Antibody-drug conjugates (ADCs) are a class of antineoplastic agents whose structure is composed of three main components: a monoclonal antibody (mAB) targeting a specific target antigen, a cytotoxic payload, and a linker binding the antibody to the payload. By combining the specificity of mABs with the high potency of the payloads, ADCs constitute a smart drug delivery system with improved therapeutic index. After recognition and binding of the mAB to its target surface antigen, ADCs are internalized by endocytosis by the tumor cell, releasing the payloads into the cytoplasm, where they exert their cytotoxic activity, eventually leading to cell death. The composition of some of the new ADCs confers additional functional properties that allow expanding their activity to neighboring cells not expressing the target antigen, constituting a valuable strategy to overcome tumor heterogeneity. Some of these 'off-target effects', such as the bystander effect, are possibly the mechanism underlying the antitumor activity demonstrated in patients with low expression of the target antigens, which represents an important paradigm shift in anticancer targeted therapy. Three ADCs are currently approved for the treatment of breast cancer (BC); two anti-HER2 (human epidermal growth factor receptor 2) ADCs (trastuzumab emtansine and trastuzumab deruxtecan); and one Trop-2-targeted ADC (sacituzumab govitecan). Based on the unprecedented efficacy data demonstrated by these agents, ADCs have been incorporated as part of standard regimens for all subtypes of advanced BC, as well as for high-risk early HER2-positive BC. Despite the remarkable advances, several hurdles still remain to overcome, including the development of reliable biomarkers for patient selection, prevention, and management of potentially severe toxicities, ADC resistance mechanisms, post-ADC resistance patterns, and optimal treatment sequencing and combinations. In this review, we will summarize the currently available evidence related to the use of these agents, as well as explore the current landscape of ADC development for BC treatment.
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Affiliation(s)
| | - Chiara Molinelli
- Université Libre de Bruxelles (ULB), Hôpital Universitaire de Bruxelles (HUB), Institut Jules Bordet, Brussels, Belgium
| | - Véronique Debien
- Université Libre de Bruxelles (ULB), Hôpital Universitaire de Bruxelles (HUB), Institut Jules Bordet, Brussels, Belgium
| | - Diogo Martins-Branco
- Université Libre de Bruxelles (ULB), Hôpital Universitaire de Bruxelles (HUB), Institut Jules Bordet, Brussels, Belgium
| | - Philippe Aftimos
- Université Libre de Bruxelles (ULB), Hôpital Universitaire de Bruxelles (HUB), Institut Jules Bordet, Brussels, Belgium
| | - Evandro de Azambuja
- Université Libre de Bruxelles (ULB), Hôpital Universitaire de Bruxelles (HUB), Institut Jules Bordet, Brussels, Belgium
| | - Ahmad Awada
- Université Libre de Bruxelles (ULB), Hôpital Universitaire de Bruxelles (HUB), Institut Jules Bordet, Brussels, Belgium
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Dey P, Gadewal N, De A. Pathogenic HER3 dimerization domain mutations create a structural bias towards un-conventional EGFR-HER3 signalling axis in breast cancer. Int J Biol Macromol 2023; 242:124765. [PMID: 37156315 DOI: 10.1016/j.ijbiomac.2023.124765] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 03/31/2023] [Accepted: 05/02/2023] [Indexed: 05/10/2023]
Abstract
Among the EGFR family of receptors, HER3 is considered as a pseudo-kinase which primarily interacts with HER2 in presence of heregulin-1β. We identified two hotspot mutations i.e. G284R and D297Y and one double mutant HER2-S310F/HER3-G284R in breast cancer patients. Long term MDS (7.5 μs) revealed that HER3-D297Y and HER2-S310F:HER3-G284R do not allow the interaction with HER2 as these mutations cause dramatic conformational changes in its flanking regions. This results in formation of an unstable HER2-WT:HER3-D297Y heterodimer, thereby abrogating the downstream signalling by AKT. We found that His228 and Ser300 of HER3-D297Y form stable interactions with Glu245 and Tyr270 of EGFR-WT, in the presence of either EGF or heregulin-1β. Applying TRIM-ing mediated direct knockdown of endogenous EGFR protein, specificity of the unconventional EGFR:HER3-D297Y interaction was validated. Due to this unusual ligand mediated interaction, cancer cells were found susceptible to EGFR targeted therapeutics i.e. Gefitinib and Erlotinib. Further, in TCGA analysis, BC patients harbouring HER3-D297Y mutation showed increased p-EGFR levels as compared to the patients harbouring HER3-WT and HER3-G284R mutations. For the first time, this comprehensive study showed the importance of specific hotspot mutations in HER3 dimerization domain can defy the Trastuzumab therapy, rather cells become susceptible to the EGFR inhibitors.
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Affiliation(s)
- Pranay Dey
- Molecular Functional Imaging Lab, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai, India; Faculty of Life Sciences, Homi Bhabha National Institute, Mumbai, India
| | - Nikhil Gadewal
- Bioinformatics unit, ACTREC, Tata Memorial Centre, Kharghar, Navi Mumbai, India
| | - Abhijit De
- Molecular Functional Imaging Lab, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai, India; Faculty of Life Sciences, Homi Bhabha National Institute, Mumbai, India.
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Lüftner D. New treatment options for hormone receptor positive breast cancer in 2023. Curr Opin Obstet Gynecol 2023; 35:62-66. [PMID: 36341983 DOI: 10.1097/gco.0000000000000834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
PURPOSE OF REVIEW Hormone receptor positive, human epidermal growth factor receptor 2 negative (HR+/HER2-) breast cancer does respond to chemotherapy but can be addressed with a better therapeutic index by using biologically modified endocrine therapy. The most pronounced recent successes were reached by antibody drug conjugates (ADCs). RECENT FINDINGS In early HR+/HER2- disease, adjuvant treatment escalations have taken place for high-risk patients using abemaciclib for the HR+ BRCA- subset and olaparib for HR+ BRCA+ patients. In metastatic spread, among all CDK (cyclin-dependent kinase) 4/6 inhibitors used for first-line therapy, only ribociclib improved overall survival in pre and postmenopausal patients. Palbociclib failed to demonstrate overall survival benefits. New options come up with oral selective oestrogen receptor degraders (SERDs) such as elacestrant, which will replace fulvestrant and is clinically important in combination therapies. ADCs, together with new patient categories such as HER2low or HER3+, enlarge the treatment portfolio and challenge the need of supportive care. The antitrophoblast antigen 2 (TROP2) ADC sacituzumab govitecan improves overall survival in heavily pretreated HR+/HER2- patients by 3.2 months. The best improvement of overall survival was shown bý trastuzumab deruxtecan in less pretreated HER2low (HER2 1+ or HER2 2+/no gene amplification) patients with a gained life span of 6 months. SUMMARY Real-world data on the sequence of different ADCs with similar payloads are needed to establish best possible treatment algorithms. All these new agents will find their place after CDK4/6 inhibitor-based endocrine combination therapy.
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Affiliation(s)
- Diana Lüftner
- Immanuel Hospital Märkische Schweiz, Buckow
- Medical University of Brandenburg Theodor Fontane, Immanuel Campus Rüdersdorf, Rüdersdorf bei Berlin, Germany
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